Skocz do pozycji: 1.

Tytuł:

An empirical evaluation of exchange rates changes: economic implications in oil-exporting countries
Empiryczna ocena zmian stopy wymiany walut i ich ekonomicznych implikacji w krajach eksportujących ropę naftową

Autorzy:

AbdulRahman, A.

Powiązania:

https://bibliotekanauki.pl/articles/2051471.pdf

Data publikacji:

2019

Wydawca:

Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej

Tematy:

exchange rate
spot exchange rate
fixed exchange rate
inflation rate

Opis:

Subject and purpose of work: This paper examines empirical implications of exchange rates in the economy of the Kingdom of Saudi Arabia (KSA). In particular, it aims to identify and evaluate potential macroeconomic signs and symptoms of economic disturbance so as to determine macroeconomic variables that influence spot exchange rate (1GBP = SAR), and to examine how fixed exchange rate regime influences exports and imports in the Kingdom of Saudi Arabia (KSA). Materials and methods: Multiple regression and simple linear regression models were used to analyze the data from 1975 to 2018. Results: The study found a weak and insignificant relationship between spot exchange rate and unemployment rate, inflation rate, exports, and economic growth, along with strong relations with imports, investment, and current account variation in the KSA. Conclusions: The study recommends the adoption of a floating exchange rate regime in the KSA. It has revealed the signs and symptoms of increases of the inflation rate with decreasing exports, increasing imports, decreasing of current account (current account deficit threat), and small increases of investment.
Przedmiot i cel pracy: W artykule przeprowadzono ocenę empiryczną implikacji zmian stopy wymiany walut w gospodarce Królestwa Arabii Saudyjskiej. Szczególnym celem artykułu jest identyfikacja i ocena potencjalnych sygnałów i symptomów makroekonomicznych zakłóceń w gospodarce i określenie makroekonomicznych zmiennych, które wpływają na stopę wymiany funta brytyjskiego na jednostkę waluty krajowej (1 GBP=SAR), a także dokonanie oceny w jakim stopniu system wymiany walut wpływa na rozmiary eksportu i importu Królestwa Arabii Saudyjskiej. Materiały i metody: W pracy zastosowano statystyczne modele regresji liniowej i metody regresji wielorakiej przy wykorzystaniu danych liczbowych za okres 1975-2018. Wyniki: W badaniach ujawniono słabe i mało znaczące powiązania między stopą wymiany waluty krajowej na waluty zagraniczne a stopą bezrobocia, stopą inflacji, wielkością eksportu, wzrostem ekonomicznym oraz silne relacje stopy wymiany walut na rozmiary importu, inwestycje oraz zmiany w bilansie obrotów bieżących Królestwa Arabii Saudyjskiej. Wnioski: Badania rekomendują stosowanie systemu zmiennej stopy wymiany walut w Królestwie Arabii Saudyjskiej. W wyniku badań zaewidencjonowano powiązane ze stopą wymiany walut sygnały i symptomy, takie jak: wzrost stopy inflacji, spadek eksportu, wzrost importu oraz powiększenie deficytu obrotów bieżących, a także spowolnienie procesów inwestycyjnych. Autorzy rekomendują wprowadzenie w Królestwie Arabii Saudyjskiej zmiennej stopy wymiany waluty krajowej wobec walut zagranicznych.

Źródło:

Economic and Regional Studies; 2019, 12, 2; 111-126
2083-3725
2451-182X

Pojawia się w:

Economic and Regional Studies

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

ARTICULATION AND SPEAKING RATES IN BILINGUALS WITH REGARD TO TIME OF EXPOSURE TO ONE LANGUAGE

Autorzy:

Michalik, Mirosław
Czaplewska, Ewa
Solak, Anna
Szkotak, Anna

Powiązania:

https://bibliotekanauki.pl/articles/2137812.pdf

Data publikacji:

2020-05-13

Wydawca:

Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica

Tematy:

bilingualism
speaking rate
articulation rate
pauses

Opis:

The basic aim of the research presented in this paper was to check whether the language proficiency level of bilingual children with Polish as one of their languages is also related to the pace of speech, which is the result of two specific parameters i.e. articulation rate and speaking rate. It was assumed that children who use Polish more rarely and mostly at home will display slower speaking and articulation rates when contrasted with children who use Polish both at home and at school on an everyday basis. Participants were thirty-two children who speak Polish as one of two languages, the first research group consisting of sixteen Polish-French students at the age of 8.11 living in Wal-lonia. The second group consisted of sixteen Flemish-Polish students living in Flanders. Here the average age was 9.3 and subjects used Polish much less than their first group coun-terparts. The comparative analysis included the following parameters essential for the de-scription of the rate of speech: 1. basic: average speaking rate (phones/sec., syllables/sec, duration of pauses), average articulation rate (phones/sec., syllables/sec.), average ratio of pauses in speech sample (number and percentage), 2. accessory: average duration of all pauses (sec.), average duration of proper pauses (sec.), average duration of filled pauses (sec.), average duration of semi-filled pauses (sec.). The numerical data from the research was obtained with the use of free Audacity software. The results showed that there were no statistically significant differences between the two research groups in either the basic or the accessory speech rate parameters. In the Polish-French group the results were comparatively better but still statistically insignificant. It seems that the data obtained will confirm the need for considerable caution in the evalua-tion of the competence of bilingual children with high language skills. Similar to children with imbalanced bilingualism, these children may also, perhaps, require some extra time to deal with certain language tasks.

Źródło:

Acta Neuropsychologica; 2020, 18(2); 207-220
1730-7503
2084-4298

Pojawia się w:

Acta Neuropsychologica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Stopa bezrobocia – mankamenty pomiaru i próba ich eliminacji
Unemployment rate – measurement defects and an attempt of their elimination

Autorzy:

Głuszczuk, Dariusz
Raszkowski, Andrzej

Powiązania:

https://bibliotekanauki.pl/articles/569892.pdf

Data publikacji:

2016

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

unemployment
unemployment rate
unemployment rate measurement

Opis:

The algorithm for measuring unemployment rate can be formulated in many ways. Its basic variant is defined as the quotient of unemployed people number and the professionally active population (unemployed and employed). However, sometimes it is indicated that this relationship is based on the number of unemployed people and the production age population. Solving this alternative does not seem difficult. Adopting conventional definitions of unemployment rate components is much more complicated, i.e. the definition of an unemployed and an employed person. Different interpretations of meanings ingrained in these concepts result in an indicator value variation which, by assumption, is supposed to describe accurately the intensity of unemployment phenomenon in a given population. Therefore, it seems founded to pose a question – what should be done to make national and international unemployment statistics more credible? An attempt to solve this problem determines the logical sequence of the discussion presented in the paper (problem identification – recommended solutions).

Źródło:

Ekonomia XXI Wieku; 2016, 2 (10); 22-29
2353-8929

Pojawia się w:

Ekonomia XXI Wieku

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Safety Performance Factor

Autorzy:

Venkataraman, N.

Powiązania:

https://bibliotekanauki.pl/articles/90142.pdf

Data publikacji:

2008

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

frequency rate
severity rate
accident
human-hours

Opis:

Workplace safety performance is computed using frequency rate (FR) and severity rate (SR). Only work time lost due to occupational incidents that need to be reported is counted. FR and SR are the 2 most important safety performance indicators that are applied universally; however, calculations differ from country to country. All injuries and time lost should be considered while calculating safety performance. The extent of severity does not matter as every incident is counted. So, a new factor has to be defined; it should be based on the hours or days lost due to each occupational incident, irrespective of its severity. The new safety performance factor is defined as the average human-hour unit lost due to occupational accidents/incidents, including fatalities, first-aid incidents, bruises and cuts. The formula is simple and easy to apply.

Źródło:

International Journal of Occupational Safety and Ergonomics; 2008, 14, 3; 327-331
1080-3548

Pojawia się w:

International Journal of Occupational Safety and Ergonomics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Design and Modeling of an Experimental Hydraulic Device

Autorzy:

Tkáč, Z.
Halenár, M.
Kosiba, J.

Powiązania:

https://bibliotekanauki.pl/articles/2065018.pdf

Data publikacji:

2018

Wydawca:

STE GROUP

Tematy:

hydraulic fluid
flow rate
flow rate efficiency

Opis:

The design of the experimental laboratory device is based on the construction of the hydraulic circuits of mobile devices. It is possible to ensure the repeatability of the flow characteristic measurements at the laboratory. This means that in the operating test it is possible to verify the flow characteristics of the hydraulic pump and these results are not affected by the change in the physical properties of the applied liquid. By comparing of the flow characteristics directly on the work equipment (mini-excavator, etc.), the disadvantage is the need for dismantling the hydraulic pump and its mounting on the laboratory device. In some working device removal is not possible, where dismantling is structurally difficult or is time consuming, which increases the cost of their operation.The proposed experimental laboratory device serves to verify the flow characteristics of the hydraulic pump and is also designed to be universal, to test external gear hydraulic pump and hydraulic pump with inclined plate.

Źródło:

Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 63--68
2545-2827

Pojawia się w:

Multidisciplinary Aspects of Production Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Radon emission rate and analysis of its influencing parameters

Autorzy:

Neugebauer, T.
Hingmann, H.
Buermeyer, J.
Grimm, V.
Breckow, J.

Powiązania:

https://bibliotekanauki.pl/articles/147494.pdf

Data publikacji:

2016

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

air change rate
radon emission rate
radon entry rate
radon exposition
window function

Opis:

The geological and structural conditions define the radon situation inside a building. While the geological realities can be specified by the content of radium-226 and the ratio of radon-222 emitted from the ground the structural conditions are defined by the tightness of the building envelope. The radon concentration inside has an unsteady character, which is caused by meteorological conditions outside and the air change rate (ACH or ACR), which in turn is influenced by the residents’ behaviour such as venting and heating. For the assessment of the radon exposition, it is necessary to perform measurements for a long time. An approach to reduce this time by eliminating the inhabitants influence on the radon concentration is the radon emission rate, also known as radon entry rate. This variable is based on the measurement of the radon concentration and the parallel determination of the air change rate via a tracer gas method, the result expresses a released activity per time. Due to their noisy character, it is necessary to apply a smoothing algorithm to the input parameters. In addition to mean values, the use of window functions, known from digital signal processing, was analysed. For the verification of the whole calculation procedure, simulations and measurements under defined conditions were used. Furthermore, measurements in an uninhabited house showed proof of the capability of the assessment of the radon potential. First examinations of influencing parameters of the radon emission rate showed a possible dependence on the temperature difference inside and outside the building.

Źródło:

Nukleonika; 2016, 61, 3; 337-342
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

DETERMINANTY ZRÓŻNICOWANIA ZMIAN WSKAŹNIKA DŁUGU PUBLICZNEGO W KRAJACH UE 15 W LATACH 2000-2014
Determinants of the diversification of changes in public debt ratios in the EU-15 countries in the years 2000-2014

Autorzy:

Grabia, Tomasz

Powiązania:

https://bibliotekanauki.pl/articles/950606.pdf

Data publikacji:

2015

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

public debt
GDP growth rate
inflation rate
interest rate
rating
budget balance
primary balance

Opis:

The aim of the article is to identify the determinants of changes in public debt ratios in the developed countries of the EU (EU-15). The analysis was based on the observations of the average values of analysed variables in particular countries throughout the study period and over two sub-periods: 2001-2007 and 2008-2014. On the basis of the article it can be concluded that the diversification of changes in public debt ratios resulted mainly from varying budget and primary balances (the lower the deficits, the lower the increases in public debt ratios) and, to a smaller extent, also from varying interest rates on bonds (the lower the interest rates, the lower the increases in public debt ratios) as well as varying economic growth rates (the higher the economic growth rates, the lower the rises in public debt ratios).

Źródło:

Financial Sciences. Nauki o Finansach; 2015, 3(24); 25-46
2080-5993
2449-9811

Pojawia się w:

Financial Sciences. Nauki o Finansach

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Radon and thoron exhalation rate measurements from building materials used in Serbia

Autorzy:

Čeliković, Igor T.
Pantelić, Gordana K.
Živanović, Miloš Z.
Vukanac, Ivana S.
Krneta Nikolić, Jelena D.
Kandić, Aleksandar B.
Lončar, Boris B.

Powiązania:

https://bibliotekanauki.pl/articles/148848.pdf

Data publikacji:

2020

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

air exchange rate
building materials
radon exhalation rate

Opis:

The second most important source of indoor radon, after soil beneath dwelling, is building material. With the increase in environmental awareness and new energy-saving policies, residents tend to replace the existing windows with tighter windows, which leads to a decrease in air exchange rate and consequently an increase in indoor radon concentration. In case of low exchange rates, dose caused by inhalation of radon and its progeny can exceed external dose originating from the radium content in the surrounding building material. In this paper, surface exhalation rates of radon (222Rn) and thoron (220Rn) from typical building materials used for construction and interior decoration of houses in Serbia were investigated. Surface exhalation rate measurements were performed using the closed-chamber method, while concentrations of radon and thoron in the chamber were continuously measured using an active device, RTM1688-2, produced by SARAD® GmbH. Finally, the impact of the replacement of windows on the indoor radon concentration was estimated.

Źródło:

Nukleonika; 2020, 65, 2; 111-114
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

THE APPLICATION OF REGRESSION ANALYSIS IN TESTING UNCOVERED INTEREST RATE PARITY

Autorzy:

Kisielińska, Joanna
Czech, Katarzyna

Powiązania:

https://bibliotekanauki.pl/articles/453467.pdf

Data publikacji:

2013

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki

Tematy:

uncovered interest rate parity
exchange rate
linear regression model

Opis:

The aim of the paper is to evaluate and compare two linear regression models proposed by Froot and Frankel (1989) and to show their application in verification of the uncovered interest rate parity (UIP) hypothesis in the selected ten exchange rate markets. The paper shows that both models proposed by Froot and Frankel (1989) are formally equivalent, but they may give different regression results. Many researchers claim that uncovered interest rate parity tends to hold more frequently in emerging markets than in developed economies. The paper is focused on five developed and five emerging economies. It is partly confirmed that developing countries work better in terms of UIP.

Źródło:

Metody Ilościowe w Badaniach Ekonomicznych; 2013, 14, 1; 232-242
2082-792X

Pojawia się w:

Metody Ilościowe w Badaniach Ekonomicznych

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Zabezpieczenie ryzyka stopy procentowej w kredytowaniu działalności przedsiębiorstw
The Hedging of Interest Rate Risk in Enterprises’ Loans

Autorzy:

Klimontowicz, Monika
Pyka, Anna

Powiązania:

https://bibliotekanauki.pl/articles/2182059.pdf

Data publikacji:

2018-07-30

Wydawca:

Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania

Tematy:

ryzyko stopy procentowej
transakcje IRS
transakcje FRA
transakcje
CIRS
opcje na stopę procentową
interest rate risk
interest rate swap
forward rate agreements
currency interest
rate swap
interest rate options

Opis:

Poprawiająca się koniunktura gospodarcza, złagodzenie polityki kredytowej banków oraz niski poziom stóp procentowych sprzyjają zwiększaniu zobowiązań kredytowych firm. Kredyty te są zwykle kredytami o zmiennym oprocentowaniu, co powoduje trudności w oszacowaniu kosztu pozyskanego kapitału wynikające z ryzyka wzrostu stóp procentowych. Wychodząc naprzeciw potrzebom klientów w tym zakresie, banki oferują szereg produktów mających na celu zabezpieczenie przedsiębiorstw przed tego typu ryzykiem. Celem artykułu jest określenie przesłanek korzystania przez przedsiębiorstwa z instrumentów zabezpieczających ryzyko zmian stóp procentowych. Realizacja tego celu wymagała omówienia ryzyka transakcyjnego wynikającego ze zmiany stóp procentowych, scharakteryzowania dostępnych na polskim rynku instrumentów zabezpieczających to ryzyko oraz przeanalizowania związanych z nimi korzyści i ryzyk.
The improving economic situation, loosened credit policy of banks and a low level of interest rates foster the increase in enterprises’ credit obligations. Variable rates that are characteristic of those credits cause some difficulties in capital cost estimation resulting from the risk of interest rate increase. To meet enterprises’ expectations, banks are offering a range of products aimed at hedging such a risk. The purpose of the paper is to define the prerequisites for using interest rate hedging instruments in enterprises’ policies. It required characterising the nature of transactional risk resulting from interest rate changes, presenting financial instruments offered by banks operating on the Polish banking market and analysing advantages and threats connected with such transactions.

Źródło:

Studia i Materiały; 2018, 1(27) cz. 2; 54-64
1733-9758

Pojawia się w:

Studia i Materiały

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Krótka refleksja nad konstrukcją zryczałtowanego odszkodowania

Autorzy:

Małgorzata, Balwicka-Szczyrba,

Powiązania:

https://bibliotekanauki.pl/articles/902890.pdf

Data publikacji:

2016

Wydawca:

Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego

Tematy:

flat-rate compensation

Opis:

This speech is a brief discussion of flat-rate compensation. It has been decided that such claims are permissible under Art. 361 § 2 of the Polish Civil Code. However, they cannot change the substance of the damage claim. Therefore, such a claim cannot be divorced from the circumstances, in which the injury was sustained, nor be disproportionately large compared to the extent of the damage.

Źródło:

Studia Iuridica; 2016, 64; 137-140
0137-4346

Pojawia się w:

Studia Iuridica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Deglaciation rate on southern and western Spitsbergen in the conditions of Arctic amplification

Autorzy:

Szafraniec, Joanna Ewa

Powiązania:

https://bibliotekanauki.pl/articles/2042121.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Arctic
Svalbard
recession rate
acceleration of deglaciation rate
GIS

Źródło:

Polish Polar Research; 2018, 39, 1; 77-98
0138-0338
2081-8262

Pojawia się w:

Polish Polar Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

Biuret: a Potential Burning Rate Suppressant in Ammonium Chlorate(VII) Based Composite Propellants

Autorzy:

Dey, A.
Ghorpade, V. G.
Kumar, A.
Gupta, M.

Powiązania:

https://bibliotekanauki.pl/articles/358579.pdf

Data publikacji:

2014

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

burning rate suppressants
biuret
burning rate
HTPB
composite propellant

Opis:

Several composite propellant compositions containing various concentrations of biuret, a new burning rate suppressant, were formulated and studied to optimize the concentration of biuret in the composite propellant. Biuret was used here for the first time in a composite propellant as a burning rate suppressant. The theoretical properties of the compositions containing different concentrations of biuret were computed by using the NASA CEC-71 programme and the burning rate performances were evaluated. In addition, the sensitivity, thermal and mechanical properties of the compositions were also evaluated. The composition containing ammonium chlorate(VII) (AP) 65%, Al 15%, binder 20% and biuret 0-6% over the batch were prepared. The composition containing 6% biuret over the batch was insensitive to friction and impact. As the amount of biuret was increased, the energy, burning rate and sensitivity decreased, whilst the auto ignition temperature increased. The formulation containing 4% biuret over the batch was found to be the optimum with respect to energy, burning rate, pressure index, and sensitivity.

Źródło:

Central European Journal of Energetic Materials; 2014, 11, 1; 3-13
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

The Employment of Foreigners in Poland and the Labour Market Situation

Autorzy:

Duszczyk, Maciej
Matuszczyk, Kamil

Powiązania:

https://bibliotekanauki.pl/articles/498569.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

labour migration
Polska
unemployment rate
employment rate
economic inactivity

Opis:

Between 2014 and 2016 the number of foreigners on the Polish labour market increased by over 300 per cent. They were mainly Ukrainian citizens taking up seasonal employment on the basis of the so-called ‘simplified system’. According to the literature, such a large increase in labour immigration in a short period of time may be an important factor in the growth of unemployment and the reduction of the employment rate of natives. The main purpose of this text is to show the correlation between the increase in the employment of foreigners in Poland and to determine whether or not this has had an impact on the deterioration of the state of the labour market. For this purpose, data from the Central Statistical Office and the Polish Ministry of Family, Labour and Social Policy were collected. As a result of our analysis, it was found that the significant increase in the presence of foreigners on the Polish labour market, which the country has faced in recent years, was not correlated with the rise in unemployment, the increase in the rate of economic inactivity and the availability of seasonal jobs. On this basis, we can state that the increase in the supply of foreigners on the Polish labour market, compared to other factors influencing it, was weak enough for the negative effects of the increased employment of foreigners to not occur.

Źródło:

Central and Eastern European Migration Review; 2018, 7, 2; 53-68
2300-1682

Pojawia się w:

Central and Eastern European Migration Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Quantitative OHS evaluation : RATE procedure compared with traditional reliability methodologies

Autorzy:

Pantanali, C.
Bianco, C.

Powiązania:

https://bibliotekanauki.pl/articles/2069678.pdf

Data publikacji:

2009

Wydawca:

Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności

Tematy:

RATE
SME
OHS

Opis:

The most careful and consolidated risk analysis methods, as FTA, ETA, FMEA/FMECA, focus attention on system reliability. But, looking at OHS, a deep analysis on European data on accidents at work and on work environment in general, shows how reliability is only one aspect of safety problem. These methods then are hardly adaptable when the main aim is to obtain a quantitative assessment of risk for workers; besides, Rother methodologies are nearest to OHS but give only qualitative results like HAZOP, or base their analysis on notdimensional values, fixed by analyst on personal experiences, like methods proposed by UNI EN 1050, by standard MIL-STD-882c and by AISS. RATE is proposed as a new quantitative methodology for OHS, particularly dedicated to SMEs considered as the most interesting from these aspect. The paper compares hypothesis and procedures which traditional quantitative methodologies and RATE are based on, to give evidence at the main approach aspects that have to be modified in order to move from reliability to OHS.

Źródło:

Journal of Polish Safety and Reliability Association; 2009, 2; 345--352
2084-5316

Pojawia się w:

Journal of Polish Safety and Reliability Association

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Exchange rate volatility and trade. The case of Ukraine

Autorzy:

Popova, Olga
Jablinski, Jörg
Lukashenko, T.

Powiązania:

https://bibliotekanauki.pl/articles/692551.pdf

Data publikacji:

2016

Wydawca:

Uniwersytet Ekonomiczny w Poznaniu

Tematy:

volatility
trade
exchange rate
transitional economies
international transactions
growth rate

Opis:

This article demonstrates the assumptions of economic theory and its followers, the theories which stimulate research on the positive correlation between the success of the economy, its growth and the level of international trade. The empirical analysis of this paper examines the example of the exchange rate volatility and its influence on international trade on the basis of Ukraine. In the descriptive part of this study, which looks at the exchange rate volatility in Ukraine as a whole, the authors have aggregated the bilateral volatilities using trade shares as weights to obtain what is referred to as the “effective volatility” of the country’s exchange rates. It is summarized that the current situation in Ukraine is extremely difficult, and external financial support could alleviate the crisis. The time span used in the work includes the years from 1999 to 2014, with the help of which the authors have demonstrated the fluctuation and correlation between these two factors. From the graph it has been possible to make the conclusion that even if there was no significant visible correlation between trade and the exchange rate volatility, it does not mean that there is no relationship between these two factors, because there are a lot of factors which affect the level of trade.

Źródło:

Research Papers in Economics and Finance; 2016, 1, 1; 17-24
2543-6430

Pojawia się w:

Research Papers in Economics and Finance

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

A note on failure rate of the mixture of an exponential distribution and distribution with increasing quadratic failure rate function

Autorzy:

Knopik, L.

Powiązania:

https://bibliotekanauki.pl/articles/206455.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Tematy:

mixture of distributions
quadratic failure rate function
failure rate function

Opis:

We show that a unimodal failure rate function can be obtained as a mixture of two increasing failure rate functions. Specifically, we study the failure rate of the mixture of an exponential distribution and an IFR (increasing failure rate) distribution with increasing quadratic failure rate function. At the end of the paper we show a numerical example of the modified unimodal failure rate function.

Źródło:

Control and Cybernetics; 2017, 46, 3; 291-297
0324-8569

Pojawia się w:

Control and Cybernetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Impact of Exchange Rate on Economic Growth in Sri Lanka

Autorzy:

Aslam, A. L. Mohamed

Powiązania:

https://bibliotekanauki.pl/articles/1191250.pdf

Data publikacji:

2016

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Exchange rate
Economic growth
Interest rate
Colombo Consumer Price Index

Opis:

Exchange rate is identified as a factor for turning vector of the economic growth of countries which was empirically confirmed by several related studies. But in Sri Lankan context it was not confirmed. Therefore, the objective of this study was to test the impact of exchange rate on the economic growth in Sri Lanka. To achieve this objective, the annual time series data from 1970 to 2015 were used and the variables such as gross domestic product, exchange rate, inflation rate, and interest rate were considered and the multiple regressions model using Ordinary Least squared method was employed. Based on the outcome of the multiple regression model, this study confirmed that the exchange rate positively influenced on the economic growth in Sri Lanka at one percent significant level.

Źródło:

World Scientific News; 2016, 54; 252-266
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

A study of the Inverse Gaussian Process with hazard rate functions-based drifts applied to degradation modelling

Autorzy:

Rodríguez-Picón, Luis Alberto
Méndez-González, Luis Carlos
Pérez-Olguín, Iván JC
Hernández-Hernández, Jesús Israel

Powiązania:

https://bibliotekanauki.pl/articles/2175136.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN

Tematy:

inverse Gaussian process
hazard rate function
degradation rate
variable drift

Opis:

The stochastic modelling of degradation processes requires different characteristics to be considered, such that it is possible to capture all the possible information about a phenomenon under study. An important characteristic is what is known as the drift in some stochastic processes; specifically, the drift allows to obtain information about the growth degradation rate of the characteristic of interest. In some phenomenon’s the growth rate cannot be considered as a constant parameter, which means that the rate may vary from trajectory to trajectory. Given this, it is important to study alternative strategies that allow to model this variation in the drift. In this paper, several hazard rate functions are integrated in the inverse Gaussian process to describe its drift in the aims of individually characterize degradation trajectories. The proposed modelling scheme is illustrated in two case studies, from which the best fitting model is selected via information criteria, a discussion of the flexibility of the proposed models is provided according to the obtained results.

Źródło:

Eksploatacja i Niezawodność; 2022, 24, 3; 590--602
1507-2711

Pojawia się w:

Eksploatacja i Niezawodność

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

On the binary classification problem in discriminant analysis using linear programming methods

Autorzy:

Olusola, Michael O.
Onyeagu, Sydney I.

Powiązania:

https://bibliotekanauki.pl/articles/406591.pdf

Data publikacji:

2020

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

binary classification
discriminant analysis
error rate
hit rate
linear programming

Opis:

This paper is centred on a binary classification problem in which it is desired to assign a new object with multivariate features to one of two distinct populations as based on historical sets of samples from two populations. A linear discriminant analysis framework has been proposed, called the minimised sum of deviations by proportion (MSDP) to model the binary classification problem. In the MSDP formulation, the sum of the proportion of exterior deviations is minimised subject to the group separation constraints, the normalisation constraint, the upper bound constraints on proportions of exterior deviations and the sign unrestriction vis-à-vis the non-negativity constraints. The two-phase method in linear programming is adopted as a solution technique to generate the discriminant function. The decision rule on group-membership prediction is constructed using the apparent error rate. The performance of the MSDP has been compared with some existing linear discriminant models using a previously published dataset on road casualties. The MSDP model was more promising and well suited for the imbalanced dataset on road casualties.

Źródło:

Operations Research and Decisions; 2020, 30, 1; 119-130
2081-8858
2391-6060

Pojawia się w:

Operations Research and Decisions

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

Characteristics of populations of narrow-clawed crayfish Pontastacus leptodactylus in three Belarusian lakes of the Baltic sea catchment area
Charakterystyka populacji raków wąskopłetwych Pontastacus leptodactylus w trzech białoruskich jeziorach zlewni Morza Bałtyckiego

Autorzy:

Alekhnovich, Anatoli

Powiązania:

https://bibliotekanauki.pl/articles/27322961.pdf

Data publikacji:

2021

Wydawca:

Uniwersytet Pomorski w Słupsku

Tematy:

narrow-clawed crayfish
population size
survival rate
population growth rate

Opis:

The population characteristics of narrow-clawed crayfish were studied in three Belarusian lakes of the Baltic Sea catchment area. The life history of crayfish is 7 years. The number of larvae I, produced by all females of the population in late spring – early summer is the highest in eutrophic lake Bobrovichskoe – 26.37 ind./m2, the lowest number of larvae I is in mesotrophic lake Ginkovo – 7.09 ind./m2. The number of individuals that survive the transition period from larvae I to the age of one year is 2.80 ± 0.46%, to sexual maturity at the age of 3 years – 0.73 ± 0.15% of crayfish individuals. In the considered populations, the annual survival rate of sexually mature females in the considered populations is 50.7 ± 1.53%. The average generation time is 4.03 ± 0.13 years.

Źródło:

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2021, 25; 19-30
1643-0115

Pojawia się w:

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

Efekt zewnętrzny wykształcenia
The External Effect of Education

Autorzy:

Strawiński, Paweł

Powiązania:

https://bibliotekanauki.pl/articles/575744.pdf

Data publikacji:

2009-06-30

Wydawca:

Szkoła Główna Handlowa w Warszawie. Kolegium Analiz Ekonomicznych

Tematy:

education
external rate of return
excess rate of return
private rate of return
instrumental variables
spillover effect

Opis:

The author sets out to measure the external rate of return on secondary and university-level education in Poland. The rate is defined as the excess rate of return for human capital. However, the author says it is difficult to precisely quantify the rate due to methodological problems and the unavailability of data. The economic model used in the article is based on the comparative advantage theory. The econometric model identifies the external rate of return on education thanks to the use of instrumental variables. The analysis confirms that there was a shift in the structure of demand for higher education in Poland in 1998-2005. The author uses empirical data to show the positive external effect linked with education. The private annual rate of return on education in Poland exceeded 7 percent in 1998-2005 and was among the highest in Europe. Additionally, the author shows that there is an external effect linked with education. It stands at 1%-5% annually, Strawiński says. The results obtained in the analysis were confirmed using various model options and estimation methods. Moreover, Strawiński showed that as the proportion of the population with a secondary education increased, people began to earn higher paychecks. This means that secondary education generates a spillover effect, Strawiński concludes.

Źródło:

Gospodarka Narodowa. The Polish Journal of Economics; 2009, 232, 5-6; 39-60
2300-5238

Pojawia się w:

Gospodarka Narodowa. The Polish Journal of Economics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

Models for survey nonresponse and bias adjustment techniques

Autorzy:

Ayhan, H. Öztaş

Powiązania:

https://bibliotekanauki.pl/articles/18105172.pdf

Data publikacji:

2023-06-13

Wydawca:

Główny Urząd Statystyczny

Tematy:

response rate
nonresponse bias
nonresponse rate
sample survey
survey error

Opis:

Survey statisticians have been dealing with the issues of nonresponse in sample surveys for many years. Due to the complex nature of the mechanism, so far it has not been easy to find a general solution to this problem. In this paper, several aspects of this topic will be elaborated on: the survey unit nonresponse bias has been examined alternatively by taking response amounts which are fixed initially and also by taking the response amounts as random variables. An overview of the components of the bias due to nonresponse will be performed. Nonresponse bias components are illustrated for each alternative approach and the amount of bias was computed for each case.

Źródło:

Statistics in Transition new series; 2023, 24, 3; 139-149
1234-7655

Pojawia się w:

Statistics in Transition new series

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

Consumer characteristics with regard to choosing between fixed and adjustable interest rates in mortgage contracts

Autorzy:

Penczar, Marta

Powiązania:

https://bibliotekanauki.pl/articles/485268.pdf

Data publikacji:

2017

Wydawca:

Bankowy Fundusz Gwarancyjny

Tematy:

fixed-rate mortgages
FRMs
adjustable-rate mortgages
ARMs
consumer preferences

Opis:

The main purpose of the article is to analyse the most important borrower characteristics determining preferences in the choice of the interest rate formula in mortgage contracts. Based on the PFSA statistics, the portfolio of newly-issued mortgages in 2016 was analysed to identify a group of consumers corresponding to the borrower characteristics who, in the light of European and global research, would be willing or obliged to choose a fixed interest rate. The conducted research shows that in Poland, the scale of the fixed interest rate choice in mortgage contracts is insignificant and represents only 0.2% of total mortgage debt. The analysis allows to identify a group of Polish consumers who should be given an option to choose a fixed rate when signing a mortgage contract. The size of the target group that should get acquainted with the offer of fixed-rate mortgages varies in Poland, depending on the chosen borrower characteristics. On the basis of the research, however, it can be incurred that in about 20% of the concluded contracts, there should be an option to choose the interest rate formula.

Źródło:

Bezpieczny Bank; 2017, 4 (69); 131-146
1429-2939

Pojawia się w:

Bezpieczny Bank

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Effects of central bank financial strength on policy outcomes – a study of selected African countries

Autorzy:

Popoola, Abiodun

Powiązania:

https://bibliotekanauki.pl/articles/522330.pdf

Data publikacji:

2018

Wydawca:

Uniwersytet Ekonomiczny w Katowicach

Tematy:

Central bank financial strength
Exchange rate
Inflation
Interest rate
Policy

Opis:

Aim/purpose – The purpose of this paper is to investigate the relationship between financial strength and policy outcomes of central banks in Africa. This is against the background of challenging policy tasks facing African central banks and the fact that they increasingly have to respond to occurrences that stem from the volatile global financial system. Design/methodology/approach – Three panel regression models were developed and estimated to capture the effects of the financial strength of the central banks of ten selected countries on their inflation outcomes, official exchange rate, and interest rate. Annual data derived from the balance sheets of ten African central banks as well as macroeconomic variables from World Development Indicators for the period 2000-2014 were used for the empirical analysis. Findings – This study found out that: central bank financial strength is not a significant determinant of inflation outcomes in African countries; central bank financial strength has a significant impact on the determination of official exchange rate in Africa; and central bank financial strength is not a significant factor in the determination of interest rates by central banks in Africa. Research implications/limitations – A major implication is that central bank financial strength is necessary for result-oriented exchange rate policy in African countries. However, studies employing other estimation methods may make for more robust results. Also, the inclusion of central banks that report the results of their operations in other languages apart from English may make for better generalization. Originality/value/contribution – This study is unique in that it has focused exclusively on central banks of countries in Africa. It has also added value by considering the effect of central bank financial strength not only on inflation, but also on exchange rate and interest rate which are issues of serious concern in developing countries.

Źródło:

Journal of Economics and Management; 2018, 34; 147-169
1732-1948

Pojawia się w:

Journal of Economics and Management

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Monetary Determinants of House Prices in Central and Eastern European Countries
Czynniki monetarne cen nieruchomości w krajach Europy Środkowej i Wschodniej

Autorzy:

Shevchuk, Viktor

Powiązania:

https://bibliotekanauki.pl/articles/2158930.pdf

Data publikacji:

2022

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

house prices
interest rate
exchange rate
Central and Eastern Europe

Opis:

This research aimed at the empirical estimation of the monetary determinants of house prices in the Czech Republic, Hungary, Poland, and Romania. The application of quarterly panel data for the period 2010-2019 indicates that a central bank policy rate increase was responsible for the fall in house prices, with a similar effect on house prices by a higher consumer inflation and nominal (real) exchange rate undervaluation. There was no reaction of house prices to the business cycle. However, the housing boom had a positive contribution to cyclical changes in output, while not affecting consumer prices and exchange rate.
Przeprowadzone badanie ma na celu oszacowanie empiryczne czynników monetarnych dla cen nieruchomości w Republice Czeskiej, na Węgrzech, w Polsce i w Rumunii. Wykorzystując kwartalne dane panelowe z lat 2010-2019, stwierdzono, że wzrost stopy procentowej banku centralne- go powoduje spadek cen nieruchomości, przy podobnym oddzialywaniu inflacji konsumenckiej i nie- doszacowanego kursu walutowego w ujęciu nominalnym i realnym. Ceny nieruchomości nie zależą od cyklu koniunkturalnego, ale boom na rynku nieruchomości pozytywnie oddziałuje na cykliczne zmiany dochodu, nie mając jednocześnie wpływu na ceny konsumenckie i kurs walutowy.

Źródło:

Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu; 2022, 66, 4; 132-146
1899-3192

Pojawia się w:

Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

The efficiency of foreign direct investments in Poland - does the risk of investing in emerging market country lead to a high rate of return?
Efektywność bezpośrednich inwestycji zagranicznych w Polsce - czy ryzyko inwestowania na rozwijającym się rynku wiąże się z wysoką stopą zwrotu?

Autorzy:

Zabolotnyy, S.

Powiązania:

https://bibliotekanauki.pl/articles/868111.pdf

Data publikacji:

2015

Wydawca:

The Polish Association of Agricultural and Agribusiness Economists

Tematy:

efficiency
foreign direct investment
Polska
risk
market
return rate
high rate

Opis:

The goal of a research was to determine the efficiency of foreign direct investments (FDI) in Poland comparing to alternative forms of capital allocation. The analysis of Polish FDI according to economic activity and geographical zone was conducted. In 2000-2012 the inward position of FDI rose significantly due to a surge in equity capital and reinvested earnings as well as in other capital in form of various debt instruments. Generally the rate of return on FDI in Poland was higher than the Polish and US government bond yields that gave an evidence of a higher efficiency of FDI comparing to a low risk financial instruments.
Celem badań było określenie efektywności polskich bezpośrednich inwestycji zagranicznych (BIZ ) w porównaniu z alternatywnymi formami inwestowania kapitału. Przeprowadzono analizę polskich BIZ według rodzaju działalności gospodarczej oraz strefy geograficznej. W latach 2000-2012 stan zobowiązań z tytułu BIZ znacząco wzrósł na skutek zwiększenia wartości zobowiązań z tytułu udziałów kapitałowych i reinwestowanych zysków, a także pozostałego kapitału w formie instrumentów dłużnych. Stopa zwrotu z BIZ w Polsce była wyższa niż rentowność polskich i amerykańskich obligacji skarbowych, co potwierdzało wyższą efektywność BIZ w porównaniu z instrumentami finansowymi o niższym poziomie ryzyka.

Źródło:

Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu; 2015, 17, 6
1508-3535
2450-7296

Pojawia się w:

Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Comparison of fertility ratios, attitudes and beliefs of Polish and Czech women
Porównanie wskaźników dzietności oraz postaw i poglądów w grupie kobiet polskich i czeskich

Autorzy:

Brodziak, Andrzej
Kutnohorska, Jana
Cicha, Martina
Wolińska, Agnieszka
Ziółko, Ewa

Powiązania:

https://bibliotekanauki.pl/articles/1178616.pdf

Data publikacji:

2013

Wydawca:

Instytut Medycyny Wsi

Tematy:

attitudes of women
beliefs of women
birth rate
fertility
fertility rate

Opis:

Aim of the study: The aim of this study was to estimate some basic data related to the fertility in the chosen groups of Polish and Czech women. We have tried to acquire and analyze the attitudes and beliefs of these women in motherhood and the desire to have children. These data enable to verify the interdisciplinary hypothesis explaining the decline of birth rate and low fertility in European countries. Materials and methods: The authors performed the survey by means of a questionnaire formulated after a comprehensive discussion of possible reasons of birth rate decline. They have tried through the questions of the survey to verify the hypothesis that the decline is the result of the cumulative mental changes occurring in contemporary societies. The questionnaire completed 90 Polish women students pursuing complementary studies of nursing in Higher School of Applied Sciences in Nysa, during the academic year 2012/2013. The questionnaire also completed 53 Czech women students pursuing part-time studies and training at the Tomas Bata University in Zlin (the Czech Republic). Results: The above surveyed 90 Polish women gave birth to 132 children, so fertility rates is 1.46. The average age at the birth of the first child was 24.7 years, of the second child 27.5 and of the third child 31.7 years. The surveyed 53 Czech women gave birth to 86 children, so fertility rates is 1.62. The average age at birth of the first child was 24.7 years, of the second child 27.2 and of the third child 27,5 years. The authors present also convictions, beliefs and attitudes of the women under study. Conclusions: The multifaceted and interdisciplinary hypothesis (theoretical model) formulated at the outset of our work, can be useful for attempts to estimate the pro-family attitudes in different populations of women. The results in the light of compliance with the proposed theoretical model allow for the formulation of proposals for action, which would counteract the decline in birth rates.
Cel pracy: Celem pracy była ocena podstawowych danych dotyczących płodności w wybranych grupach kobiet w Polsce i Czechach. Próbowaliśmy także analizować postawy i przekonania tych kobiet odnośnie macierzyństwa i chęci posiadania dzieci. Dane te pozwalają na sprawdzenie interdyscyplinarnej hipotezy wyjaśniającej spadek liczby urodzeń i niskiej dzietności w krajach europejskich. Materiał i metody: Badania przeprowadzono za pomocą kwestionariusza sformułowanego po dokładnym omówieniu możliwych przyczyn spadku liczby urodzeń. Jedną z nich jest kumulacja zmian psychicznych zachodzących we współczesnych społeczeństwach. Ankietę wypełniło dziewięćdziesiąt Polek, studentek uzupełniających studiów pielęgniarskich Wyższej Szkoły Zawodowej w Nysie, w roku akademickim 2012/2013. Ankieta została również przeprowadzona wśród pięćdziesięciu trzech studentek z Czech. Były to kobiety, które studiują w niepełnym wymiarze czasu na Uniwersytecie Tomasza Baty w Zlinie. Wyniki: Ankietowane Polki urodziły łącznie 132 dzieci, zatem współczynnik dzietności w tej grupie wynosi 1,46. Średni wiek ankietowanej w momencie narodzin pierwszego dziecka wynosił 24,7 lat, w momencie narodzin drugiego dziecka: 27,5 i trzeciego dziecka: 31,7 lat. Badane kobiety z Czech urodziły 86 dzieci, więc współczynnik dzietności wynosi 1,62. Średni wiek urodzenia pierwszego dziecka w tej grupie kobiet to 24,7 lat, drugiego dziecka 27,2 i trzeciego dziecka 27,5 lat. Autorzy przedstawiają również przekonania i postawy kobiet objętych badaniem, odnośnie macierzyństwa. Wnioski: Wielopłaszczyznowa i interdyscyplinarna hipoteza (model teoretyczny), sformułowana na początku pracy, opisująca spadek liczby urodzeń, może być przydatna do prób oszacowania prorodzinnych postaw w różnych populacjach kobiet. Wyniki w świetle zgodności z proponowanym modelem teoretycznym pozwalają na formułowanie wniosków dotyczących działań, które mogłyby przeciwdziałać spadkowi liczby urodzeń.

Źródło:

Medycyna Środowiskowa - Environmental Medicine; 2013, 16, 2; 69-78
1505-7054
2084-6312

Pojawia się w:

Medycyna Środowiskowa - Environmental Medicine

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 29.

Tytuł:

Modelling of fiscal policy effects on agriculture and industry in Ukraine

Autorzy:

Shevchuk, V.
Kopych, R.

Powiązania:

https://bibliotekanauki.pl/articles/95019.pdf

Data publikacji:

2017

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

Tematy:

agriculture
industry
fiscal policy
nominal exchange rate
real exchange rate
Ukraine

Opis:

This paper analyses the effects of fiscal policies upon agriculture and industry in Ukraine, with the SVAR model using quarterly data for the 2001–2016 period. The results indicate a positive effect of the government spending on both agricultural production and industrial output, while an increase in the government revenue is of the same expansionary impact for the latter only. Among other results, there is a weak negative short-lived spillover from agriculture to industry, with no causality running on the reverse. As agricultural production in Ukraine is associated with a higher level of government spending in the short run, a direction of causality seems to be just the opposite for industrial output. Both agriculture and industry bring about higher budget revenues in the short run, but for the latter this effect is lagged and more persistent. Controlling for fiscal policy effects, the nominal (real) exchange rate depreciation seems to be expansionary for industrial output. For agriculture, a nominal exchange rate depreciation is restrictionary in the short run, with an expansionary effect in the long run (however, this result is not supported in specification with the real exchange rate). Several implications of fiscal policy effects are discussed.

Źródło:

Information Systems in Management; 2017, 6, 2; 131-142
2084-5537
2544-1728

Pojawia się w:

Information Systems in Management

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 30.

Tytuł:

An analysis of the skiing accidents that happened on the slopes of the Kasprowy Wierch

Autorzy:

Mucha, Dariusz
Ambroży, Tadeusz
Mucha, Teresa
Bornikowska, Agata
Papierz, Anna

Powiązania:

https://bibliotekanauki.pl/articles/1878620.pdf

Data publikacji:

2014

Wydawca:

Wyższa Szkoła Bezpieczeństwa Publicznego i Indywidualnego Apeiron w Krakowie

Tematy:

skiing
injury rate
safety

Opis:

Injuries are much more often incurred by those who practice sports recreationally, which is probably caused by the lack of proper physical fitness and violation of the safety rules, as well as by the fact that mass sports attract much more people. The majority of dangerous, injury-prone situations in skiing are also generated by technical errors, lack of proper coordination, poorly fitted or faulty equipment. Although an accident is defined as a series of causes and circumstances that are difficult to anticipate, a considerable reduction of the number of sports accidents involving the locomotor system while skiing is possible, e.g. by promoting safety rules and analysing accidents that happen on the slopes. The characteristics of skiers' safety and injury rate have been developed by way of analysing skiing accidents that required rescue team interventions. The analysis comprised 90 skiers from the Kasprowy Wierch; 42 women (46%) and 48 men (54%) who were involved in skiing accidents in the 2008-2009 season, on the basis of accident sheets from the 2008-2009 season routinely delivered to the TOPR (Tatra Volunteer Search and Rescue) stations, which were made available to us.

Źródło:

Security Dimensions; 2014, 11(11); 192-201
2353-7000

Pojawia się w:

Security Dimensions

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Tętno jako wskaźnik obciążenia pracą w fermie krów mlecznych
The heart rate as the index of workload in the dairy farm

Autorzy:

Groborz, A.
Juliszewski, T.

Powiązania:

https://bibliotekanauki.pl/articles/286462.pdf

Data publikacji:

2005

Wydawca:

Polskie Towarzystwo Inżynierii Rolniczej

Tematy:

tętno
ergonomia
wskaźnik
rezerwa tętna
heart rate
ergonomics
heart rate reserve

Opis:

W artykule przedstawiono analizę tętna podczas pracy personelu, zatrudnionego w oborze krów mlecznych. Badaniami objęto 15 osób, pracujących w jednym gospodarstwie województwa śląskiego. Na podstawie pomiarów tętna określono wskaźnik wykorzystania rezerwy tętna.
In the article is showed the heart rate analysis during work of personnel employing in the dairy farm. Research included 15 persons, which was working in one farm of Silesian Province. On the basis of the heart rate measurements was characterized the heart rate reserve index.

Źródło:

Inżynieria Rolnicza; 2005, R. 9, nr 10, 10; 107-115
1429-7264

Pojawia się w:

Inżynieria Rolnicza

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Struktura terminowa stóp procentowych opisana modelami stopy krótkoterminowej
Term structure of interest rates described with short-rate models

Autorzy:

Jodź, Kamil

Powiązania:

https://bibliotekanauki.pl/articles/434054.pdf

Data publikacji:

2014

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

spot rate
term structure of interest rates
yield curve
one-factor short-rate models
two-factor short-rate models

Opis:

The article gives an overview of the theoretical basis for the term structure of interest rates. Theoretical and practical benefits of this kind of modeling are indicated. The arguments in support of the opinion that the financial market model with continuous time is better than the model with discrete time are listed. Slightly wider is the discussion on one-factor and two-factor models of the dynamics of the short term rate due to stochas-tic differential equations.

Źródło:

Śląski Przegląd Statystyczny; 2014, 12(18); 273-284
1644-6739

Pojawia się w:

Śląski Przegląd Statystyczny

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Construction of multi-state life tables for critical illness insurance – influence of age and sex on the incidence of health inequalities

Autorzy:

Dębicka, Joanna
Zmyślona, Beata

Powiązania:

https://bibliotekanauki.pl/articles/434064.pdf

Data publikacji:

2016

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

multi-state life tables
health insurance
inequalities in health
mortality rate
fatality rate
incidence rate
lung cancer
unhealthy behaviours

Opis:

The aim of the paper is twofold. The first one is to present the multi-state life tables associated with the insurance against the risk for lung cancer. Probabilistic structure of the model regarding incidence and mortality rates of lung cancer takes into account many factors such as a patient’s health condition (mild and critical), the probability of remaining in mild state of health and the probability of state of health deterioration. The lifetime in a critical state is analyzed in detail. The probability of death of a patient is also analysed according to the health condition. The analysis of the influence of inequalities in health caused by gender, biological sex and age on the probabilistic structure pose the second aim of paper.

Źródło:

Śląski Przegląd Statystyczny; 2016, 14 (20); 41-64
1644-6739

Pojawia się w:

Śląski Przegląd Statystyczny

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

Validation of automated detection of physical and mental stress during work in a Huhnermobil 225

Autorzy:

Quendler, Elisabeth
Trieb, Katharina
Nimmerichter, Alfred

Powiązania:

https://bibliotekanauki.pl/articles/989872.pdf

Data publikacji:

2017

Wydawca:

Instytut Medycyny Wsi

Tematy:

workload
heart rate
stress

Opis:

Introduction. The effects of the use of mobile henhouses and their equipment on the physical and mental stress of farmers in the organic egg production, and the reliability of the sensor-based detection of these in work processes are insufficiently known. There are neither measurement results nor key figures, according to operation and gender especially, available in the literature. Objective. The aim of this case study is to quantify the physical and mental stress of work processes on the basis of heart rate and the Baevsky Stress Index, as measured by the ECG- and activity sensor Movisens®, which is used mainly in the sports and rehabilitation sectors. To analyse the impact, daily routine work was divided into operations and the data collected for this purpose analysed descriptively and analytically. Conclusions. In summary, it can be concluded that measurement technology has the potential to capture the activityrelated exceedances of the endurance limit of the work severity by means of the heart rate reliably, to identify risk areas of employment and to quantify stress situations. The accuracy and reliability of data acquisition with Movisens® should be validated by a larger sample size and further measurements. In particular, the algorithm for calculating the data to quantify the mental and physical stress without movement needs to be improved significantly through further development.

Źródło:

Annals of Agricultural and Environmental Medicine; 2017, 24, 2
1232-1966

Pojawia się w:

Annals of Agricultural and Environmental Medicine

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Utilization of Liquid Commercial Probiotics to Improve Survival and Growth of Siamese Catfish Fingerlings (Hypopthalmus pangasionodon (Sauvage, 1878))

Autorzy:

Meidi, Wulan Sutiandari
Lili, Walim
Iskandar, Iskandar
Suryadi, Ibnu Bangkit Bioshina

Powiązania:

https://bibliotekanauki.pl/articles/1076704.pdf

Data publikacji:

2019

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Hypopthalmus pangasionodon
Siamese catfish
feed convertion ratio
growth rate
probiotics
survival rate

Opis:

The purpose of this research is to determine the effect of liquid commercial probiotics usage on improving the survival rate and growth of Siamese catfish fingerlings. This research was conducted on March to May 2018, at Building 4 Laboratory, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran. This study used an experimental method with Completely Randomized Design (CRD), which consisted of four treatments and three replications. The treatments are feed without the addition of probiotics, and feed with additional probiotics at doses of 2, 4, and 6 ml / kg of feed. The parameters observed were survival rate, absolute weight, absolute length, feed conversion ratio, proximate test analysis and water quality. Data on absolute weight, absolute length, feed conversion ratio and survival rate were analyzed using analysis of variance, while nutrition changes of fish feed and water quality were analyzed descriptively. The results showed that the best addition of probiotics for feed, is with probiotic doses of 2 ml / kg of feed, which resulted in a 100% survival rate, an absolute weight value of 1.03% and a feed conversion ratio of 1.13.

Źródło:

World News of Natural Sciences; 2019, 24; 54-63
2543-5426

Pojawia się w:

World News of Natural Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

Dynamic force measurements of avidin-biotin and streptavdin-biotin interactions using AFM

Autorzy:

de Odrowąż Piramowicz, Marzena
Czuba, Paweł
Targosz, Marta
Burda, Kvĕtoslava
Szymoński, Marek

Powiązania:

https://bibliotekanauki.pl/articles/1041274.pdf

Data publikacji:

2006

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

atomic force microscopy
rupture force
loading rate
streptavidin
avidin
biotin
dissociation rate

Opis:

Using atomic force microscopy (AFM) we performed dynamic force measurements of the adhesive forces in two model systems: avidin-biotin and streptavidin-biotin. In our experiments we used glutaraldehyde for immobilization of (strept)avidin on the tip and biotin on the sample surface. Such interface layers are more rigid than those usually reported in the literature for AFM studies, when (strept)avidin is coupled with biotinylated bovine albumin and biotin with agarose polymers. We determined the dependence of the rupture forces of avidin-biotin and streptavidin-biotin bonds in the range 300-9600 pN/s. The slope of a semilogarithmic plot of this relation changes at about 1700 pN/s. The existence of two different regimes indicates the presence of two activation barriers of these complexes during the dissociation process. The dissociation rates and activation energy barriers, calculated from the Bell model, for the avidin-biotin and streptavidin-biotin interactions are similar to each other for loading rates >1700 pN/s but they are different from each other for loading rates < 1700 pN/s. In the latter case, the dissociation rates show a higher stability of the avidin-biotin complex than the streptavidin-biotin complex due to a larger outer activation barrier of 0.8 kBT. The bond-rupture force is about 20 pN higher for the avidin-biotin pair than for the streptavidin-biotin pair for loading rates < 1700 pN/s. These two experimental observations are in agreement with the known structural differences between the biotin binding pocket of avidin and of streptavidin.

Źródło:

Acta Biochimica Polonica; 2006, 53, 1; 93-100
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 37.

Tytuł:

Spatial and temporal variability of idiopathic pulmonary fibrosis cases in Silesian Voivodeship in years 2006–2010

Autorzy:

Niewiadomska, Ewa
Kowalska, Małgorzata
Zejda, Jan E.

Powiązania:

https://bibliotekanauki.pl/articles/2161900.pdf

Data publikacji:

2017-06-19

Wydawca:

Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi

Tematy:

occupational exposure
idiopathic pulmonary fibrosis
maps
incidence rate
descriptive epidemiology
hospitalization rate

Opis:

Objectives Idiopathic pulmonary fibrosis (IPF) (J84.1 by the International Statistical Classification of Diseases and Related Health Problems, 10th revision – ICD-10) is a rare disease of unknown cause. Among many risk factors, occupational exposure to metal dust is enumerated. Because of metal industry concentration in the Silesian Voivodeship, Poland, an attempt of spatial and temporal variability of the idiopathic pulmonary fibrosis occurrence evaluation in 2006–2010 is made. Material and Methods The research is a descriptive analysis. Data of the number of new treated cases and firsttime hospitalization due to idiopathic pulmonary fibrosis in the years 2006–2010 was obtained from the National Health Found (Narodowy Fundusz Zdrowia – NFZ). We also assessed spatial and temporal variability of both rates. Data concerned adults aged ≥ 19 years old inhabited the Silesian Voivodeship. Results The standardized incidence rate due to idiopathic pulmonary fibrosis increased in the study period and was in the range of 2.9–3.8/100 000 population. The highest values of incidence were observed in districts localized in the centre of the Silesian Voivodeship. Conclusions Incidence of idiopathic pulmonary fibrosis is not so high in the Silesian Voivodeship but the number of newly treated cases slightly increased in 2006–2010. Spatial and temporal variability of incidence rates for treated registered cases of idiopathic pulmonary fibrosis in the Silesian Voivodeship was observed. It could be an effect of occupational exposure to metal dust, however, final conclusions need more precise studies to the extent of analytical epidemiology. Int J Occup Med Environ Health 2017;30(4):593–601

Źródło:

International Journal of Occupational Medicine and Environmental Health; 2017, 30, 4; 593-601
1232-1087
1896-494X

Pojawia się w:

International Journal of Occupational Medicine and Environmental Health

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 38.

Tytuł:

Spatial and temporal variability of bronchiectasis cases in Silesian voivodeship in 2006–2010

Autorzy:

Niewiadomska, Ewa
Kowalska, Małgorzata
Zejda, Jan E.

Powiązania:

https://bibliotekanauki.pl/articles/2177430.pdf

Data publikacji:

2016-06-30

Wydawca:

Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi

Tematy:

maps
descriptive study
incidence rate
cases of bronchiectasis
hospitalization rate
spatial epidemiology

Opis:

Objectives Reports on an increasing number of hospitalizations in other European countries and the lack of epidemiological data on the prevalence of bronchiectasis in Poland constituted motivation for the authors to investigate temporal changes of the registered incidence and hospitalization due to bronchiectasis in Silesian voivodeship, and to evaluate spatial variability of the disease in the study region. Material and Methods The study is a descriptive epidemiological project. Temporal and spatial variability of coefficients describing numbers of newly diagnosed cases and first time hospitalizations due to bronchiectasis (code J47 according to International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10)) were evaluated based on the registered data available from the National Health Found (2006–2010) and the data from MZ/Szp-11 reports (2000–2011). The data concerned adults aged ≥ 19 years, inhabitants of Silesian voivodeship. Maps of incidence or hospitalization rates due to bronchiectasis were constructed by the use of a geographical information system ArcGIS. Results The obtained results show a stable trend of reported new diseases, whereas the number of first time hospitalizations is increasing. Values of the standardized incidence were 19.9–25.1/100 000 inhabitants, and values of the standardized first-time hospitalization were 1.2–2.9/100 000 inhabitants. The reported rates of bronchiectasis indicate significant spatial differences in epidemiological situation in the study region. Conclusions The findings showed territorial variability of the incidence and hospitalization of bronchiectasis recorded in Silesian voivodeship. The observed variability might result from regional differences in the availability of specialized medical services.

Źródło:

International Journal of Occupational Medicine and Environmental Health; 2016, 29, 4; 699-708
1232-1087
1896-494X

Pojawia się w:

International Journal of Occupational Medicine and Environmental Health

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 39.

Tytuł:

How do variations in dollar exchange rate impact food commodity prices in Africa?

Autorzy:

Umoru, David
Amedu, Mishau

Powiązania:

https://bibliotekanauki.pl/articles/13925603.pdf

Data publikacji:

2022-09-23

Wydawca:

Wyższa Szkoła Bankowa we Wrocławiu

Tematy:

Interest rate variation
exchange rate variation
commodity export
food commodity prices
Africa

Opis:

Aim: Commodity exporting nations have significant terms of trade swings, making their actual exchange rate unstable. This study looked at how variations in dollar exchange rate affected food commodity prices in Africa between 1990 and 2021. Design/Research methods: The study conducted GARCH analysis for ascertaining prevalence of volatilities of exchange rates and interest rates respectively in selected African countries. Also, we estimated both static and dynamic analysis driven by panel least squares and generalized method of moments (GMM) estimators on panel data from some commodity-exporting African, namely, Ghana, Gabon, Tunisia, Nigeria, and South Africa. Findings: The dynamic GMM results reveal exchange rate and interest rate variations taken together had positive effects on commodity prices. GARCH estimates demonstrate significant volatility growth using both normal and t multivariate distributions. However, based on empirical findings, t-distribution had largest maximized log-likelihood of -8920.1 and also had a satisfactory df of 26.82 (<30). The results demonstrate that the Nigerian Naira had highest coefficient of volatility of approximately 71.2%. This was followed by the Ghanaian Cedi with a negative volatility rate of 71% and the South African rand with a coefficient of 65%. However, while all countries had negative volatility with respect to interest rate, all countries except Ghana had positive volatility in exchange rate of their currency. Ghana, Gabon, Tunisia, and Nigeria showed negative exchange rate volatility. A possible explanation for this high volatilities in the aforementioned countries is persistent domestic inflation. Originality: The originality is rooted on establishment of food prices having some positive relation with pervasive exchange rate shocks. This is an indication of adverse effects of downward adjustment of exchange rate of local African currencies vis-à-vis the US dollar on food prices in the African countries covered in the study. Contributions: The contribution of the study lies on its explanation of the increase of food commodity prices due to variability calculated in terms of depreciation in dollar exchange rate. Empirically, it is a confirmation of a significant structural problem, exchange rate variation as a cause of domestic inflation in selected African countries. Limitations: Results have to be interpreted with care due to the small sample size. The results are rather a working hypothesis for future research. JEL: A20, F46, G20

Źródło:

Central European Review of Economics and Management; 2022, 6, 3; 47-68
2543-9472

Pojawia się w:

Central European Review of Economics and Management

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 40.

Tytuł:

Skala fluktuacji kursu złotego wobec wybranych walut w latach 2009–2014 – analiza danych empirycznych
The Scale of Fluctuations of the Zloty’s Exchange Rate Against Selected Currencies in the Years of 2009–2014 – an Analysis of Empirical Data

Autorzy:

Michalczyk, Wawrzyniec

Powiązania:

https://bibliotekanauki.pl/articles/654881.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

kurs walutowy
kurs złotego
EUR/PLN
USD/PLN
ERV
stabilność kursu
exchange rate
zloty’s exchange rate
exchange rate stability

Opis:

After a period of significant variations, since 2012 the zloty’s exchange rate has undergone visible stabilization. Although the level of Polish currency’s relation to the euro is the most significant for Polish economy, it is also vital to analyze its value against the dollar or other currencies, issued by the most important economic partners. The aim of the article is to characterize the volatility of the zloty and identify key trends in this field. The author presents the results of analysis of the relation of Polish currency to the euro and to the dollar, and further also to other major currencies, i. e. Swiss franc, British pound, Czech koruna, Russian ruble and Chinese yuan. As a research method, the indicator analysis of statistical data, including correlation analysis, was used. The research period covers 1.08.2009–31.07.2014. The analysis of fluctuations in the zloty’s exchange rate confirmed an observation about increased stability of Polish currency’s relation since 2012, which is especially important with regard to the exchange rate against the euro, because while in the ERM2, the reduction of its volatility is crucial for the selection of the economic policy’s variant conducted by the authorities. Basing on the research, it was also possible to state generally that the relation of the zloty against the euro is more stable than against the dollar and that the value of the PLN seems to be more closely linked to the EUR than to the USD.
Po okresie znacznych przeszacowań, od roku 2012 kurs złotego uległ widocznej stabilizacji. Chociaż najbardziej istotny dla polskiej gospodarki jest poziom relacji pieniądza względem euro, to również ważna jest analiza jego wartości względem dolara czy innych walut, emitowanych przez najważniejszych partnerów gospodarczych. Celem artykułu jest dokonanie charakterystyki zmienności kursu złotego i wskazanie najważniejszych tendencji w tym zakresie. Przedstawiono wyniki analizy relacji polskiego pieniądza w stosunku do euro i dolara, a dalej także względem pozostałych najważniejszych walut, tj. franka szwajcarskiego, funta brytyjskiego, korony czeskiej, rubla rosyjskiego i juana chińskiego. Jako metody badawczej użyto wskaźnikowej analizy danych statystycznych, w tym analizy korelacji. Okres badawczy to przedział 1.08.2009–31.07.2014. Analiza fluktuacji kursu złotego potwierdziła spostrzeżenie dotyczące zwiększenia stabilności relacji wymiennej polskiej waluty od roku 2012, co jest istotne przede wszystkim w odniesieniu do kursu względem euro, ponieważ podczas pobytu w systemie ERM2 ograniczenie jego wahań ma bardzo duże znaczenie dla wyboru wariantu prowadzonej przez władze polityki gospodarczej. Na podstawie przeprowadzonego badania, można było również ogólnie stwierdzić, że relacja złotego w stosunku do euro jest bardziej ustabilizowana niż względem dolara i że wartość PLN wydaje się ściślej powiązana z EUR niż z USD.

Źródło:

Acta Universitatis Lodziensis. Folia Oeconomica; 2015, 6, 317
0208-6018
2353-7663

Pojawia się w:

Acta Universitatis Lodziensis. Folia Oeconomica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 41.

Tytuł:

Zmiany w spójności gospodarczej i społecznej niemieckich landów w latach 2000–2015
Changes in the Economic and Social Cohesion of the German States in the years 2000-2015

Autorzy:

Pastuszka, Sławomir

Powiązania:

https://bibliotekanauki.pl/articles/595795.pdf

Data publikacji:

2018

Wydawca:

Łódzkie Towarzystwo Naukowe

Tematy:

Economic and social cohesion, Germany, GDP, gross wages, employment rate, unemployment rate

Opis:

The paper seeks to determine the occurrence of economic and social cohesion between German Länder. To achieve this aim, the author used the following methods: analysis of the literature, descriptive statistics, dissipation and clustering analysis. The research is based on data downloaded from the Federal Statistical Office (Destatis). Four variables were taken into consideration: GDP per capita, gross wages per worker, the employment rate and the unemployment rate. The study covered the period from 2000 to 2015, including a breakdown into two sub-periods: 2000-2008 (before the global financial crisis) and 2008-2015 (after the start of the crisis). The results of the research show that the disparities in the level of economic and social development between the Länder of Germany (East and West) decrease very slowly, before and after the outbreak of the crisis. In the analyzed period, the process of the GDP level catching up was relatively quick, followed by the level of wages, while the employment and unemployment levels were the slowest to catch up. However, despite catching up in development, there is still a large gap between the Eastern and Western Länder in terms of the basic economic indicators
Celem artykułu jest ustalenie, czy między niemieckimi landami występuje zjawisko spójności gospodarczej i społecznej. Do osiągnięcia tego celu wykorzystano metody: analizy literatury przedmiotu, statystyki opisowej, rozproszenia oraz analizy skupień. Badanie opiera się na danych Federalnego Urzędu Statystycznego (Destatis) i obejmuje takie zmienne, jak PKB per capita, wynagrodzenia brutto, wskaźnik zatrudnienia oraz stopy bezrobocia. Badaniem objęto lata 2000–2015, wyodrębniając jednocześnie podokres 2000–2008, przed globalnym kryzysem finansowym oraz 2008–2015, po rozpoczęciu kryzysu. Analiza wykazała, że dysproporcje w poziomie rozwoju gospodarczego i społecznego między landami (wschodnimi i zachodnimi) Niemiec zmniejszają się bardzo powoli i stwierdzenie to dotyczy zarówno okresu przed wybuchem kryzysu, jak i po jego wystąpieniu. W analizowanym przedziale czasowym stosunkowo najszybciej przebiegał proces nadrabiania dystansu w poziomie PKB, następnie w poziomie wynagrodzeń, a najwolniej w poziomie zatrudnienia i bezrobocia. Jednak pomimo nadrabiania zaległości rozwojowych, nadal landy wschodnie i landy zachodnie dzieli wyraźny dystans w podstawowych wskaźnikach ekonomicznych.

Źródło:

Studia Prawno-Ekonomiczne; 2018, 107; 339-357
0081-6841

Pojawia się w:

Studia Prawno-Ekonomiczne

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 42.

Tytuł:

Obciążenie pracą osób w gospodarstwach rolnych
Workload of people in farms

Autorzy:

Groborz, A.
Juliszewski, T.

Powiązania:

https://bibliotekanauki.pl/articles/287719.pdf

Data publikacji:

2006

Wydawca:

Polskie Towarzystwo Inżynierii Rolniczej

Tematy:

ergonomia
tętno
wskaźnik
rezerwa tętna
ergonomics
pulse rate
heart rate
pulse reserve
coefficient

Opis:

Obciążenie podczas pracy w gospodarstwie rolnym oceniono na podstawie pomiarów tętna. Badaniami objęto 23 osoby, pracujące w trzech, wybranych gospodarstwach rolnych.
Load during work in farms has been assessed on the grounds of pulse checks. 23 people were subject to checks, all of them working in three selected farms.

Źródło:

Inżynieria Rolnicza; 2006, R. 10, nr 12(87), 12(87); 173-180
1429-7264

Pojawia się w:

Inżynieria Rolnicza

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Analiza możliwości wykorzystania aparatury pomiarowej i programu komputerowego firmy POLAR do rejestracji tętna
Feasibility study of POLAR metods and computer program to heart rate meausurement

Autorzy:

Groborz, A.
Juliszewski, T.

Powiązania:

https://bibliotekanauki.pl/articles/288118.pdf

Data publikacji:

2005

Wydawca:

Polskie Towarzystwo Inżynierii Rolniczej

Tematy:

ergonomia
tętno
wskaźnik wykorzystania rezerwy tętna
ergonomics
heart rate
heart rate reserve index

Opis:

Tętno jest najłatwiejszym do zmierzenia i zarejestrowania wskaźnikiem reakcji układu krążenia na wysiłek (głównie fizyczny). Spośród metod pomiaru i rejestracji tętna powszechnie stosuje się obecnie bezprzewodowe mierniki. Zaletą tych mierników - np. firmy POLAR - jest łatwość obsługi. Miernik, składający się z dwóch elementów: opaski zakładanej na klatkę piersiową i zegarowego rejestratora na nadgarstku, nie przeszkadza w wykonywaniu pracy. Zarejestrowane wyniki przenoszone są przy pomocy interfejsu do komputera, gdzie mogą być wizualizowane w postaci wykresów czasowych oraz analizowane statystycznie. Programowanie rejestratora oraz różnorakie opcje analizy statystycznej tętna, umożliwiają ocenę wysiłku podczas pracy. Metoda ta wykorzystywana jest od kilku lat do ergonomicznych badań prowadzonych na Wydziale Agroinżynierii Akademii Rolniczej w Krakowie.
Heart rate is the index of a reaction of the circulatory system to effort (mainly physical), which is the easiest to measure and record. From among methods of heart rate measurement and record, cordless meters are commonly applied nowadays. One of the advantages of these meters - for example POLAR - that they are easy to use. The meter consists of two elements: chest band and wrist recorder, which do not interfere with work. The recorded results are transferred by interface to a computer, where they could be presented in the form of time charts, and analyzed statistically. The programming of the recorder and various options of the statistic analysis of heart rate enable researchers to evaluate physical effort during work. That method has been used for a few years in ergonomic research led by the Faculty of Agricultural Engineering at the Agricultural University of Krakow.

Źródło:

Inżynieria Rolnicza; 2005, R. 9, nr 14, 14; 109-117
1429-7264

Pojawia się w:

Inżynieria Rolnicza

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

A Markov model of a complex technical system operating in basic and emergency modes

Autorzy:

Malinowski, J.

Powiązania:

https://bibliotekanauki.pl/articles/2069139.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności

Tematy:

multi-state system
Markov process
failure rate
repair rate
component importance
transition intensity

Opis:

A complex technical system built of independent repairable components with constant failure and repair rates is examined. The system can operate in either basic or emergency mode, and its behavior is modeled by a three-state Markov process. It is demonstrated how to obtain closed formulas for the state probabilities of this process and the so-called importances of individual components to the inter-state transitions. Such an importance is defined as the probability that a component’s failure/repair causes a transition between two given states of the modeling process. The obtained formulas allow to compute a number of reliability parameters characterizing the dynamics of the system’s operation. The obtained results are illustrated by their application to an exemplary reliability block diagram that can be a model of a power supply network, a gas or oil pipeline system, etc.

Źródło:

Journal of Polish Safety and Reliability Association; 2015, 6, 2; 89--96
2084-5316

Pojawia się w:

Journal of Polish Safety and Reliability Association

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

Application of a Logistic Function to Describe the Growth of Fodder Galega

Autorzy:

Rymuza, K.
Bombik, A.

Powiązania:

https://bibliotekanauki.pl/articles/123385.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

oriental goat’s rue
logistic function
growth equation
growth rate equation
growth rate

Opis:

It was attempted in the paper to describe the growth of oriental goat’s rue (Galega orientalis Lam.) growth by means of a logistic function. The studies demonstrated that the function describes empirical data well as the coefficients of determination obtained ranged between 97 to 98%, depending on the growing season. The estimated function parameters indicate that both the plant height and growth rate were conditioned by thermal conditions and moisture during the growing season. Plants had the longest stems in the year 2010 (127.9 cm), and the shortest in 2008 (105.9 cm). The maximum growth rate ranged from 2.12 to 3.97 cm per day in, respectively, 2009 and 2008. Also the inflection point, the point at which plants grew the fastest, depended on the conditions of the growing season.

Źródło:

Journal of Ecological Engineering; 2017, 18, 1; 125-131
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 46.

Tytuł:

A firm’s perspective on econophysics-based currency risk analysis

Autorzy:

Fiedor, Paweł
Hołda, Artur

Powiązania:

https://bibliotekanauki.pl/articles/950707.pdf

Data publikacji:

2014

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

risk
exchange rate
predictability
econophysics

Opis:

In this article the authors presents an approach to quantifying currency risk based on the methodology of econophysics. This article continues the authors’ study into the currency risk, this time simplifying it for the purpose of rendering it useful for companies without technical abilities. A method of analysing the dependencies between currencies based on correlations is introduced to facilitate the analysis of currency risk involved in being exposed to one or more foreign currencies. Also a model estimating a risk-free horizon is introduced and tested against price formation models and empirical data from FX markets.

Źródło:

Financial Sciences. Nauki o Finansach; 2014, 4(21); 92-107
2080-5993
2449-9811

Pojawia się w:

Financial Sciences. Nauki o Finansach

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

BADANIE WPŁYWU ZMIAN STOPY REFERENCYJNEJ NBP I PRZECIĘTNEGO WYNAGRODZENIA W GOSPODARCE NARODOWEJ NA WARTOŚĆ TRANSAKCJI DOKONANYCH KARTAMI PŁATNICZYMI
studying the impact of changes in the NBP reference rate and the average wage in the national economy on the value of transactions with payment cards

Autorzy:

Staszczyk, Mateusz

Powiązania:

https://bibliotekanauki.pl/articles/950894.pdf

Data publikacji:

2014

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

payment card
reference rate
salary

Opis:

The aim of the econometric analysis is to show the mechanism shaping the level of value of transactions made with payment cards. In the article the value of transactions from payment cards was assumed as dependent variable. Reference rate and average remuneration were accepted as dependent variables. Data from banks cover all transactions made using cards issued by banks to their clients, both in Poland and abroad. Quarterly data from the period 2000-2010 were chosen for the research. The estimation of linear order was made with the use of classic least squares method. The results confirmed the assumed hypotheses: the increase of reference rate usually leads to the decrease in the value of card transactions and the salary increase in the national economy to the reverse regularity.

Źródło:

Financial Sciences. Nauki o Finansach; 2014, 1(18); 142-153
2080-5993
2449-9811

Pojawia się w:

Financial Sciences. Nauki o Finansach

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

The pattern of psychophysiological response to emotional stimulation in patients with chronic stuttering

Autorzy:

Humeniuk, Ewa
Tarkowski, Zbigniew

Powiązania:

https://bibliotekanauki.pl/articles/2106009.pdf

Data publikacji:

2020-03-11

Wydawca:

Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica

Tematy:

speech
emotions
anxiety
heart rate

Opis:

The aim of the research was to identify the pattern of psycho - physiological response to emotional stimulation in adults with chronic stuttering. The need to tell a lie functioned as emotional stimulation. Reaction to the stimulus was defined as the change of electrodermal activity (EDA), heart rate (HR), thoracic breathing (TB), diaphragmatic breathing (DB) and respiratory rate (RR) observed 10 seconds before and after the emotional stimulation. Reactions were recorded using Professional Computer Polygraph PIK-02 manufactured by Areopag-Center. The subject group included 68 persons with chronic stuttering (PWS) (24 women and 44 men) as well as 62 healthy nonstuttering persons (PWNS) (18 women and 44 men). Adult patients with chronic stuttering were observed to increase the amplitude and reaction field as well as reduce the EDA latency. The researchers also noticed both increased HR and the range of its changes. Respiratory reactions included a lower amplitude of TB, higher increase and major changes within DB as well as minor changes in RR. Adult patients with chronic stuttering display a unique pattern of psychophysiological response to emotional stimulation, which is different from the one found in the control group.

Źródło:

Acta Neuropsychologica; 2020, 18(1); 45-66
1730-7503
2084-4298

Pojawia się w:

Acta Neuropsychologica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 49.

Tytuł:

Productive machining of complex shape parts

Autorzy:

Zabransky, V.
Vavruska, P.

Powiązania:

https://bibliotekanauki.pl/articles/99416.pdf

Data publikacji:

2016

Wydawca:

Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych

Tematy:

CNC
postprocessor
feed-rate
optimization

Opis:

This paper deals with technological conditions that are achieved during multi-axis milling operations. The work is focused on the improvement of quality and productivity of machining of complex shape parts. The importance of feed-rate analysis during multi-axis machining operations is mentioned. A postprocessor algorithm for correction of relative feed-rate during multiaxis machining operations has been proposed. The postprocessor generates corrected feed-rate for each block of an NC program when a multi-axis interpolation is found. Thanks to this new postprocessor algorithm, better conditions are achieved during multi-axis machining operations and also a shorter time for NC program execution when it is used without the Tool Center Point transformation. Practical benefits and the functionality of the postprocessor algorithm have been tested by machining the blade containing multi-axis tool paths.

Źródło:

Journal of Machine Engineering; 2016, 16, 1; 79-91
1895-7595
2391-8071

Pojawia się w:

Journal of Machine Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 50.

Tytuł:

Determination of Mechanical Energy Loss in Steady Flow by Means of Dissipation Power

Autorzy:

Artichowicz, W.
Sawicki, J. M.

Powiązania:

https://bibliotekanauki.pl/articles/241274.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN

Tematy:

energy decay rate
energy loss

Opis:

When systems of simple geometry like pipes or regular channels are considered, the mechanical energy loss of the fluid flow can be expressed by local and longitudinal empirical energy loss coefficients. However, in the case of large spatially distributed objects, there are no simple approaches to this task. In practice, general recommendations addressing different types of objects are used, but they usually provide very coarse estimates of energy loss. In this work, a new methodology for determination of mechanical energy loss in steady flowis proposed. This methodology is based on the observation that the magnitude of the power of energy dissipation in turbulent flow can be determined using the averaged flow velocity and turbulent viscosity coefficient. To highlight this possibility, an analysis of the magnitudes of the power of the main and fluctuating components of turbulent flow is presented. The correctness of the method is verified using an example of laminar and turbulent flows in a circular pipe. The results obtained show clearly that the proposed methodology can be used for mechanical energy loss determination in flow objects. This methodology can be used as a basis for mechanical energy loss determination in different types of flow objects.

Źródło:

Archives of Hydro-Engineering and Environmental Mechanics; 2017, 64, 2; 73-85
1231-3726

Pojawia się w:

Archives of Hydro-Engineering and Environmental Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 51.

Tytuł:

The Effect of Probiotic Addition in Commercial Feed to Growth and Survival Rate of Sangkuriang Catfishes (Clarias gariepinus (Burchell, 1822))

Autorzy:

Lili, Walim
Hartanto, Rezky
Kurniawati, Nia
Herawati, Titin
Bangkit, B. S. Ibnu

Powiązania:

https://bibliotekanauki.pl/articles/1109212.pdf

Data publikacji:

2018

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Clarias gariepinus
Sangkuriang catfish
feed conversion ratio
probiotic
specific growth rate
survival rate

Opis:

This study was conducted to determine the effect of probiotic addition in commercial feed to the growth and survival rate of Sangkuriang catfish (Clarias gariepinus). This research was conducted at the Ciparanje Experimental Pond Laboratory, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran, Jatinangor, West Java. The method in used this research was Completely Randomized Design with four treatments and four replications. The treatment was the variances of probiotic addition which consisted of control (without probiotics), probiotic addition at as much as 0.5 grams / kg of feed, 1 gram / kg of feed and 1.5 grams / kg of feed. The parameters observed were specific growth rate (SGR), absolute biomass, survival rate (SR) and feed conversion ratio (FCR). Data were analyzed using Variant Analysis, at 95% confidence level, and continued with Duncan's Multiple Range Test. The results showed that the increase in the daily growth rate of Sangkuriang catfish was straight-line with the addition of probiotics. Furthermore, commercial probiotics with a dose of 1 gram / kg of feed resulted in specific growth rate of 4.22%, absolute weight of 11 grams, survival rate (SR) of 97.5% and FCR of 0.89.

Źródło:

World News of Natural Sciences; 2018, 21; 130-140
2543-5426

Pojawia się w:

World News of Natural Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 52.

Tytuł:

Osteohistology of the Early Triassic ichthyopterygian reptile Utatsusaurus hataii: Implications for early ichthyosaur biology

Autorzy:

Nakajima, Y.
Houssaye, A.
Endo, H.

Powiązania:

https://bibliotekanauki.pl/articles/946016.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

reptilia
basal ichthyopterygian
bone histology
aquatic adaptation
growth rate
metabolic rate
triassic
japan

Opis:

Ichthyosaurs were highly adapted to a marine lifestyle, as shown by their fish-like body shape and their assumed active swimming abilities and high metabolic rates. However, the processes of adaptation to an aquatic life in the early stages of this lineage remain poorly understood. Here, we present the first osteohistological data concerning the most basal ichthyopterygian yet known, Utatsusaurus hataii, from the Lower Triassic of Japan. The cancellous bone structure suggests adaptation to active swimming in an open marine environment. Moreover, the possible occurrence of rapidly deposited bone tissue, in a fibrolamellar complex, suggests a higher metabolic rate than in modern poikilothermic reptiles, and therefore a trend toward homeothermy. This basal ichthyosaur, with its elongate body, was already more adapted to an aquatic lifestyle than expected from its morphology, and the process of adaptation to a marine lifestyle was already well advanced by the Early Triassic.

Źródło:

Acta Palaeontologica Polonica; 2014, 59, 2; 343-352
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 53.

Tytuł:

The Role of Energy in a Real Business Cycle Model with an Endogenous Capital Utilization Rate in a Government Sector: Lessons from Bulgaria (1999–2016)

Autorzy:

Vasilev, Aleksander

Powiązania:

https://bibliotekanauki.pl/articles/1356918.pdf

Data publikacji:

2019-07-12

Wydawca:

Uniwersytet Warszawski. Wydział Nauk Ekonomicznych

Tematy:

business fluctuations
capital utilization rate
endogenous depreciation rate
energy use
energy prices
Bulgaria

Opis:

We introduce a pro-cyclical endogenous utilization rate of physical capital stock into a real business cycle model augmented with a government sector in detail. We calibrate the model to Bulgarian data for the period following the introduction of the currency board arrangement (1999–2016). We investigate the quantitative importance of the endogenous depreciation rate and the capital utilization mechanism working through the use of energy for cyclical fluctuations in Bulgaria. In particular, a positive shock to energy prices in the model works like a negative technological shock. Allowing for variations in factor utilization and the presence of energy as a factor of production improves the model performance against data, and in addition this extended setup dominates the standard RBC model framework with constant depreciation and a fixed utilization rate of physical capital (e.g., Vasilev (2009)).

Źródło:

Central European Economic Journal; 2018, 5, 52; 130 - 141
2543-6821

Pojawia się w:

Central European Economic Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 54.

Tytuł:

Determination of the optimal exchange rate via control of the domestic interest rate in Nigeria

Autorzy:

Ekhosuehi, V. U.
Ogbonmwan, S. M.

Powiązania:

https://bibliotekanauki.pl/articles/406440.pdf

Data publikacji:

2014

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

balance-of-payments
domestic interest rate
exchange rate
optimal control theory
statistical control

Opis:

An economic scenario has been considered where the government seeks to achieve a favourable balance-of-payments over a fixed planning horizon through exchange rate policy and control of the domestic interest rate. The dynamics of such an economy was considered in terms of a bounded optimal control problem where the exchange rate is the state variable and the domestic interest rate is the control variable. The idea of balance-of-payments was used as a theoretical underpinning to specify the objective function. By assuming that, changes in exchange rates were induced by two effects: the impact of the domestic interest rate on the exchange rate and the exchange rate system adopted by the government. Instances for both fixed and flexible optimal exchange rate regimes have been determined. The use of the approach has been illustrated employing data obtained from the Central Bank of Nigeria (CBN) statistical bulletin.

Źródło:

Operations Research and Decisions; 2014, 24, 1; 23-36
2081-8858
2391-6060

Pojawia się w:

Operations Research and Decisions

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 55.

Tytuł:

W kierunku jednej stawki VAT – korzyści i wyzwania na przykładzie Polski

Autorzy:

Tratkiewicz, Tomasz

Powiązania:

https://bibliotekanauki.pl/articles/610487.pdf

Data publikacji:

2016

Wydawca:

Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej

Tematy:

VAT
goods and services tax
rate structure
average rate
single rate
podatek od towarów i usług
struktura stawek
średnia stawka
jedna stawka

Opis:

The aim of the study is to present proposals related to the effectiveness of most widespread models of VAT rates, characterize the current model in Poland and formulate initial proposals regarding its capacity or, possibly, the necessity to change. Furthermore, since the study seeks to formulate highly desirable GST (goods and services tax) rate model in Poland, an attempt was also made to evaluate the possibility of its introduction.
Celem opracowania jest przedstawienie wniosków dotyczących efektywności najbardziej rozpowszechnionych modeli stawek w VAT, scharakteryzowanie funkcjonującego obecnie w Polsce modelu oraz sformułowanie wstępnych wniosków dotyczących jego wydajności, ewentualnie potrzeby jego zmiany. Podjęto również próbę sfomułowania najbardziej pożądanego modelu stawek w podatku od towarów i usług w Polsce oraz ocenę możliwości jego wprowadzenia.

Źródło:

Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia; 2016, 50, 1
0459-9586

Pojawia się w:

Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 56.

Tytuł:

The unresolved problem of determining the forest interest rate

Autorzy:

Adamowicz, Krzysztof

Powiązania:

https://bibliotekanauki.pl/articles/989659.pdf

Data publikacji:

2018

Wydawca:

Instytut Badawczy Leśnictwa

Tematy:

forestry economics
value
forestry rate

Opis:

Valuation of forests and their components is a significant problem, both for science and practice. At present, in many countries, the market of forest property is limited. As a result, no conclusions may be inferred on the forest value based on the information on forest purchase and sale transactions. In this situation, we apply static methods of forest valuation. The problem of forest statics has been discussed for years (e.g., Brukas et al. 2001; Chang 1983, 2001; Dieter 2001; Hartman 1976; Manley and Bare 2001; Mohring 2001; Zhang 2001; Viitala 2016). Static methods of forest valuation are well known. In the construction of the proposed mathematical formula (Eq. 6), the Faustmann theory was applied, concerning the economic equilibrium in forestry. Numerous modifications of his equation for economic equilibrium were used to develop, for example, an income method for forest valuation based on discounting the final value or prolongation of initial value. The forest interest rate is a key element in these equations. At present, there are no procedures for the establishment of this interest rate, which would be generally accepted by the scientific community. Therefore, the article presents and discusses selected concepts for determining the forest interest rate.

Źródło:

Folia Forestalia Polonica. Series A . Forestry; 2018, 60, 2; 122-130
0071-6677

Pojawia się w:

Folia Forestalia Polonica. Series A . Forestry

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 57.

Tytuł:

Determination of flocculation characteristics of natural stone powder suspensions in the presence of different polymers

Autorzy:

Basaran, H. K.
Tasdemir, T.

Powiązania:

https://bibliotekanauki.pl/articles/109390.pdf

Data publikacji:

2014

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

wastewater
flocculation
settling rate
turbidity

Opis:

In this study, flocculation behaviors of natural stone powder suspensions were determined by applying classical jar tests. The flocculation tests were performed in the presence of different types of polymers at different polymer dosages and pHs. Then, the settling rates and residual turbidity values of suspensions were recorded. The flocculation performance of flocculants possessing unique molecular architecture (UMA) and conventional polyacrylamide based flocculants was investigated for the solidliquid separation of natural stone processing wastewater. The effects of flocculant type, dosage and pH were examined. The results obtained from this study indicated that in terms of the settling rate and turbidity, the medium anionic SPP 508 flocculant of 28% charge density showed a better flocculation performance compared to other conventional and UMA flocculants at natural pH. The SPP 508 flocculant gave the lowest turbidity value of 3 NTU (Nepheleometric turbidity Unit) at dosage of 0.3 mg/dm3, while the highest settling rate (870 mm/min) for the suspensions tested was achieved at 1 mg/ dm3 dosage for the same flocculant. However, the lowest settling rate was obtained by high cationic flocculant (Enfloc 440 C). All flocculants showed a good flocculation performance for the settling rate and turbidity at pH 8 and 10.

Źródło:

Physicochemical Problems of Mineral Processing; 2014, 50, 1; 169-184
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 58.

Tytuł:

Znaczenie prognostyczne ekspresji HER-2/neu u chorych na wczesne postacie inwazyjnego raka szyjki macicy
Prognostic significance of HER-2/neu expression in patients at early clinical stages of invasive cervical cancer

Autorzy:

Panek, Grzegorz
Ligaj, Marcin

Powiązania:

https://bibliotekanauki.pl/articles/908432.pdf

Data publikacji:

2007

Wydawca:

Medical Communications

Tematy:

HER-2/neu expression
cervical cancer
immunohistochemistry
prognostic factors
survival rate and mortality rate

Opis:

HER-2/neu overexpression is considered an important prognostic factor, which may predict an aggressive clinical course of several tumours, including cervical cancer. Material and method: HER-2/neu expression was assessed by immunohistochemical technique in 298 patients with stage IB and IIA cervical cancer, of either planoepithelial or adenomatous type. HER-2/neu expression was compared in groups of patients selected based on generally accepted prognostic factors, e.g. clinical stage, histological type, presence of metastases to regional lymph nodes, invasion of vascular space and degree of radiation-induced destruction of tumor. Using the Cox model, a multivariate analysis of effect of selected prognostic factors was performed, both in relation to overall survival and to symptom-free survival. Results: Positive reaction to HER-2/neu was obtained in 135 cases (45.3%); the reaction was pronounced (3+) in 23 cases (7.8%) and moderate (2+) in 41 cases (13.7%). No positive reaction was obtained in 163 cases (54.7%). Analysis of survival yielded the following results: probability of 5-year overall survival for the entire patient population was 90.9% and that of 10 years – 85.2%. Overall survival curve for the entire study population is presented. Recurrence-free 5- and 10-year survival rates were 83.3% and 82.3%, respectively. Symptom-free 5- and 10-year survival rates were significantly influenced by: lymph node involvement and their number, invasion of vascular space, histological type and HER-2/neu expression. Cox analysis demonstrated a significant correlation between risk of recurrence or death and the following factors: lymph node metastases and their number, invasion of vascular space, histological type of tumour and HER-2/neu expression. The risk of recurrence or death with a single nodal metastasis and several nodal metastases is 2.4- and 5.1-fold greater than when no nodal metastases are present. The fact of vascular space involvement results in a 3-fold increase of risk of recurrence or death. In the case of planoepithelial cancer, the risk of recurrence or death is 0.4-fold that for adenomatous cancer. Finding of a strong HER-2/neu expression (2+, 3+) increases 2.7-fold the risk of therapeutic failure. Conclusions: No statistically significant differences were found in the HER-2/neu expression in groups of patients defined based on clinical-pathological parameters (i.e. clinical stage, histological type, regional lymph node metastases, radiation-induced cervix sterilization). The following prognostic factors had a significant impact on symptom-free survival: histological type, presence and numbers of lymph node metastases, invasion of vascular space, as well as TP53, BCL2 and HER-2/neu expression. Among all factors analysed, most significant prognostic impact, both in terms of overall survival and symptom-free survival, was associated with involvement of pelvic lymph nodes.
Nadekspresja HER-2/neu uważana jest za istotny czynnik prognostyczny mogący wskazywać na agresywny przebieg kliniczny wielu nowotworów, w tym RSM. Materiał i metody: Posługując się metodą immunohistoche-miczną, przeprowadzono ocenę ekspresji HER-2/neu u 298 chorych leczonych z powodu RSM w stopniach IB i IIA zarówno w grupie chorych na raka płaskonabłonkowego, jak i gruczołowego. Dokonano porównania ekspresji HER-2/neu w grupach chorych wyróżnionych na podstawie uznanych czynników prognostycznych, takich jak stopień klinicznego zaawansowania, typ histologiczny, obecność przerzutów do regionalnych węzłów chłonnych, zajęcie przestrzeni naczyniowej i stopień uszkodzenia popromiennego nowotworu. Posługując się modelem Coksa, przeprowadzono wielowariantową analizę wpływu ocenianych czynników prognostycznych zarówno na przeżycia całkowite, jak i bezobjawowe. Wyniki: Pozytywną reakcję na HER-2/neu stwierdzono w 135 przypadkach (45,3%): w 23 przypadkach była to reakcja o dużym nasileniu - 3+ (7,8%), a w 41 przypadkach o nasileniu średniego stopnia - 2+ (13,7%). W 163 przypadkach (54,7%) nie stwierdzono pozytywnej reakcji. Wyniki analizy przeżyć są następujące: prawdopodobieństwo całkowitego przeżycia 5 lat dla całej grupy chorych wyniosło 90,9%, a 10 lat - 85,2%. Przedstawiono krzywą przeżycia całkowitego analizowanej grupy chorych. Prawdopodobieństwo przeżycia bez nawrotu choroby 5 i 10 lat wyniosło odpowiednio 83,3% i 82,3%. Istotny wpływ na 5- i 10-letnie przeżycia bezobjawowe miały: przerzuty do węzłów chłonnych i ich liczba, zajęcie przestrzeni naczyniowej, typ histologiczny i ekspresja HER-2/neu. W wyniku przeprowadzonej analizy Coksa wykazano istotny wpływ prognostyczny na ryzyko nawrotu lub zgonu takich czynników, jak: przerzuty do węzłów chłonnych i ilość zajętych węzłów, zajęcie przestrzeni naczyniowej, typ histologiczny i ekspresja HER-2/neu. Ryzyko nawrotu lub zgonu dla jednego zajętego węzła oraz dla większej liczby zajętych węzłów chłonnych jest 2,4 oraz 5,1 razy wyższe od odpowiedniego ryzyka dla węzłów niezajętych. Fakt zajęcia przestrzeni naczyniowej zwiększa niemal 3-krotnie ryzyko nawrotu lub zgonu. Dla raka płaskonabłon-kowego ryzyko nawrotu lub zgonu stanowi 0,4 ryzyka niepowodzenia dla raka gruczołowego. Stwierdzenie silnej ekspresji HER-2/neu (2+, 3+) zwiększa 2,7 razy ryzyko niepowodzenia leczenia. Wnioski: Nie stwierdzono istotnych statystycznie różnic w ekspresji HER-2/neu w grupach chorych wyróżnionych na podstawie parametrów kliniczno-patologicznych (tj.: stopnia klinicznego zaawansowania, typu histologicznego, przerzutów do regionalnych węzłów chłonnych i popromiennej sterylizacji szyjki macicy). Istotny wpływ statystyczny na przeżycia bezobjawowe miały następujące czynniki prognostyczne: typ histologiczny, przerzuty do węzłów chłonnych i ich liczba, inwazja przestrzeni naczyniowej oraz ekspresja TP53, BCL2 i HER-2/neu. Spośród wszystkich analizowanych czynników największy wpływ prognostyczny zarówno na przeżycia całkowite, jak i bezobjawowe miała obecność przerzutów do węzłów chłonnych miednicy.

Źródło:

Ginekologia Onkologiczna; 2007, 5, 4; 218-235
1731-5379

Pojawia się w:

Ginekologia Onkologiczna

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 59.

Tytuł:

Mortality due to acute myocardial infarction in the Silesian Voivodship (Poland) in 2009–2014

Autorzy:

Choręza, Piotr
Filipecki, Artur
Kowalska, Małgorzata
Owczarek, Aleksander J.

Powiązania:

https://bibliotekanauki.pl/articles/2085765.pdf

Data publikacji:

2021-06-28

Wydawca:

Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi

Tematy:

cardiology
acute myocardial infarction
death rate
Silesian Voivodship
burden of deaths
standardized death rate

Opis:

ObjectivesAccording to the Organization for Economic Cooperation and Development (OECD) data, 13% of deaths recorded in the European Union in 2010 were related to coronary heart disease. The Polish Central Statistical Office data show that cardiovascular mortality in 2014 was at the level of 100.1/100 000 general population. The aim of the study was to assess the current burden of deaths due to acute myocardial infarction (AMI) with the assessment of temporal and spatial variability in the Silesian Voivodeship, Poland.Material and MethodsDepersonalized data obtained from the Silesian Voivodeship Branch of the National Health Fund of Poland, based in Katowice, were used as the study material. The death rate due to acute or subsequent myocardial infarction in each of the subregions of the Silesian Voivodeship was standardized to the European Standard Population 2013. The analyses of the annual AMI death rate for 2009–2014 were performed and assigned to all the subregions of the Silesian Voivodeship, according to the patients’ domicile. ResultsIn this study, 37.7% of the patients (N = 20 806) were females, and 30 142 healthcare services were granted to them, accounting for 36.64% of all services provided to all patients. The average patient’s age during the service provision was 66±12 years, with women being about 6.5 years older than men (70±12 years vs. 64±11 years, respectively). The standardized death rate (SDR) values in each of the 8 subregions of the Silesian Voivodeship were analyzed. In 2009–2014, a substantial decrease in the SDR was noted in 7 of them, except for the Sosnowiec subregion in which an increase in the average annual SDR value was observed. Moreover, its values were the highest in the whole Silesian Voivodeship.ConclusionsThe obtained results confirmed the spatial variability of mortality due to AMI in the study region. The worst situation was observed in the Sosnowiec subregion in which the number of specific deaths continuously increased, probably due to the limited availability of cardiological and invasive cardiology treatments or adverse health conditions.

Źródło:

International Journal of Occupational Medicine and Environmental Health; 2021, 34, 3; 363-372
1232-1087
1896-494X

Pojawia się w:

International Journal of Occupational Medicine and Environmental Health

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 60.

Tytuł:

Zastosowanie modelu drzewa trójmianowego do wyceny opcji menedżerskich
Pricing of Employee Stock Options Using Trinomial Tree

Autorzy:

Łukowski, Michał

Powiązania:

https://bibliotekanauki.pl/articles/1828608.pdf

Data publikacji:

2010-12-31

Wydawca:

Główny Urząd Statystyczny

Tematy:

opcje menedżerskie
wskaźnik odejść
wskaźnik wielokrotności
Employee Stock Options
employee exit rate
multiple rate

Opis:

W artykule omówiono konstrukcję oraz wycenę programów opcji menedżerskich. Przedstawione zostały warunki rynkowe oraz nierynkowe wykorzystywane w przypadku konstruowania programów opcyjnych. Wykorzystana metoda wyceny została oparta na drzewie trójmianowym, które zostało zmodyfikowane umożliwiając włączenie do wyceny zaprezentowanych warunków nabycia uprawnień oraz dostosowując model wyceny do wymagań Międzynarodowego Standardu Sprawozdawczości Finansowej 2.
The article discusses the construction and pricing of Employee Stock Options Plans. There were presented performance conditions and market conditions that should be taken into account constructing ESOPs. The presented valuation method is based on a trinomial tree, which was modified making it possible to include presented vesting conditions in the pricing model and adapting it to the requirements of International Financial Reporting Standard 2.

Źródło:

Przegląd Statystyczny; 2010, 57, 4; 88-104
0033-2372

Pojawia się w:

Przegląd Statystyczny

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 61.

Tytuł:

Impact of Education on Suicides in India

Autorzy:

Sharma, Priyank

Powiązania:

https://bibliotekanauki.pl/articles/18055637.pdf

Data publikacji:

2022-06-30

Wydawca:

Fundacja Pro Scientia Publica

Tematy:

NCRB Data
OECD
WHO
PISA Ranking
Tertiary Education Attainment
suicide rate
education
literacy rate

Opis:

Aim. The aim of this paper is to examine the impact of education on the rate of suicides in India. The paper further attempts to take a global outlook on how prevalent is suicide among countries with high education indicators. Methodology. The paper is based on secondary research with data collected from National Databases like National Crime Records Bureau and International databases of World Health Organization and Organisation for Economic Co-operation and Development (OECD). Data analysis is done using statistical technique like Correlation and using Microsoft Excel. Results. The study reveals that in India, the increase education levels of people have had negligible impact on the number of suicides in the country. Across states, the suicide rate and literacy rate have a positive correlation of 0.35; while correlation doesn’t mean causation and the two are mildly correlated, it does establish the fact that education doesn’t have a direct impact on the suicide rate. Also, the analysis indicates that even though the education levels in the country have risen, subsequently, the educational level among people who committed suicides also increased. Further, it is found that the countries that are ranked higher on PISA ranking and tertiary education attainment have mostly higher rates of suicide. Conclusions. As shown throughout the study, education hasn’t been an effective instrument in equipping people with life skills: with the increase in education levels across the country, there has been an increase in the education level of people who commit suicides concomitantly, as if the education is happening in vacuum with no effect on the persona of people committing suicides. Thus, it’s significant we question our educational practices; and re-align our goals of education such that it leads to overall development of an individual.

Źródło:

Journal of Education Culture and Society; 2022, 13, 1; 419-428
2081-1640

Pojawia się w:

Journal of Education Culture and Society

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 62.

Tytuł:

Simple four-step procedure of parabolic B curve determination for OECD countries in 1990Q1 – 2015Q4

Autorzy:

Dariusz, J. Błaszczuk

Powiązania:

https://bibliotekanauki.pl/articles/943110.pdf

Data publikacji:

2016-09-30

Wydawca:

Uniwersytet Ekonomiczny w Poznaniu

Tematy:

simple three-step procedure
parabolic B curve
optimal inflation
neutral inflation
inflation rate
GDP rate
relationship between inflation and GDP rate
OECD countries

Opis:

In theory the short-term relationship between inflation and GDP rate is known as the positive slope straight line SAS. In practice it is reflected by a concave non-monotonic function. The results of estimation depend on unusual observations. We propose a simple four-step procedure: first, basic estimation based on all observations; then estimation having ignored outliers; next, estimation on the average GDP rates for given inflation rates for the same observations; lastly, estimation skipping outlying averages. Empirical analysis for 26 OECD countries on quarterly data brought satisfactory results. They justified the determination of optimal GDP rate and corresponding inflation for every country. Finally, recommendations for policymakers have been formulated.

Źródło:

Economics and Business Review; 2016, 2(16), 3; 121-137
2392-1641

Pojawia się w:

Economics and Business Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 63.

Tytuł:

The response of Zimbabwe tobacco exports to real exchange rates volatility
THE RESPONSE OF ZIMBABWE TOBACCO EXPORTS TO REAL EXCHANGE RATES VOLATILITY

Autorzy:

Mutodi, Knowledge
Chuchu, Tinashe
Maziriri, Eugine Tafadzwa

Powiązania:

https://bibliotekanauki.pl/articles/1892227.pdf

Data publikacji:

2020-07-08

Wydawca:

Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane

Tematy:

Real exchange rate (RER)
Real exchange rate volatility (RERV)
Vector error correction model (VECM)

Opis:

The focus of this study was on investigating the response of tobacco exports to real exchange rates and real exchange rate volatility and other factors in Zimbabwe using secondary data spanning from 1980 to 2019. Bilateral nominal exchange rates and time-variant weights of Zimbabwe’s 10 major trading partners were calculated and used to compute the real exchange rate index. The time-dependent weighting system was used to better represent the evolution of trade patterns in the index. The arithmetic method was employed for computing the index. Generalized autoregressive conditional heteroskedasticity (GARCH) and autoregressive conditional heteroscedasticity (ARCH) models were used to generate the real exchange rate volatility index. The export response function was adopted as the tobacco exports response model. The variables in the tobacco exports response model were the realworld Gross Domestic Product (GDP), real exchange rate, terms of trade, real exchange rate volatility and dollarization. A vector error correction model (VECM) was used to estimate the response of tobacco exports to real exchange rate, real exchange rate volatility and other factors. The VECM results indicated that real world GDP was insignificant in both the short and long run. In the long run, the real exchange rate appreciation had a negative impact on tobacco exports. Conversely, in the short run, the depreciation of real exchange rate had a positive impact on tobacco exports. Hence, the government has to adopt other mechanisms that reduce uncertain movements of exchange rates.

Źródło:

Journal of Agribusiness and Rural Development; 2020, 56, 2; 201-219
1899-5241

Pojawia się w:

Journal of Agribusiness and Rural Development

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 64.

Tytuł:

Przestrzenne zróżnicowanie sytuacji młodzieży z grupy NEET na rynku pracy Unii Europejskiej
Spatial diversity of NEETs on labour market in European Union

Autorzy:

Skórska, Anna

Powiązania:

https://bibliotekanauki.pl/articles/591706.pdf

Data publikacji:

2016

Wydawca:

Uniwersytet Ekonomiczny w Katowicach

Tematy:

Młodzież
Stopa bezrobocia
Unia Europejska
Wskaźnik NEET
European Union
NEET rate
Unemployment rate
Youth

Opis:

W artykule podjęto rozważania dotyczące problemów ludzi młodych na rynku pracy, w tym zagrożonych zaklasyfikowaniem do kategorii NEET. Osoby niepracujące, nieuczestniczące w kształceniu ani szkoleniu tworzą heterogeniczną grupę, do której powinny być adresowane działania o zróżnicowanym charakterze. Stąd, jednym z priorytetów prac Komisji Europejskiej stało się przeciwdziałanie przedwczesnemu opuszczaniu systemu edukacji oraz wspieranie zatrudniania osób młodych. Zróżnicowanie sytuacji społeczno-gospodarczej poszczególnych krajów członkowskich UE wpływa na przyjęte w strategii Europa 2020 krajowe cele edukacyjne i w obszarze zatrudnienia oraz szanse ich realizacji. Uwzględniając powyższe przesłanki, celem artykułu jest przedstawienie zróżnicowania wskaźnika NEET w krajach Unii Europejskiej w latach 2004-2014 oraz ocena potencjalnych możliwości realizacji celu edukacyjnego, sformułowanego w strategii Europa 2020.
The article presents the problems of young people on labor market, with special emphasis to NEET group. Youth who are not in employment, education or training constitute a heterogeneous group, therefore activities addressed to them should be of various nature. Thus, one of the priorities of the European Commission’s work has become preventing premature leaving of the education system and promoting the employment of young people. The diversity of socio-economic situation of individual EU member states affects the national educational and employment goals formulated in strategy Europe 2020 and opportunities for their implementation. Considering the aforementioned conditions, the goal of the paper is to present diversity in NEET rate in EU-28 between 2004 and 2014 and to assess potential probability of achievement of education objectives by individual member states in the perspective of 2020.

Źródło:

Studia Ekonomiczne; 2016, 289; 153-163
2083-8611

Pojawia się w:

Studia Ekonomiczne

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 65.

Tytuł:

Impact of JPY LIBOR Rate Changes on Regulations and Development of Alternative Benchmarks in Japan
Wpływ zmian stawek LIBOR JPY na regulacje i rozwój alternatywnych benchmarków w Japonii

Autorzy:

Kubacki, Dominik

Powiązania:

https://bibliotekanauki.pl/articles/36081826.pdf

Data publikacji:

2023

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

referencyjna stopa procentowa
LIBOR
alternatywna stopa
TONA
TIBOR
TORF
benchmark interest rate
alternative rate

Opis:

The purpose of the article/hypothesis: The considerations presented in this article aim to focus on the final choice of benchmarks in Japan, which operated the LIBOR rate expressed in Japanese yen. In turn, the main purpose of the article is to try to answer whether the newly selected alternative benchmarks in the Tokyo market meet the characteristics of an ideal rate. Methodology: The paper reviews the literature, studies of regulators and index administrators, presenting the stages of reform, the selection of alternative reference rates and making a comparative analysis with the previously functioning LIBOR rate. Due to the subject of the analysis, basic statistical methods were used. Results of the research: The course of benchmark reform in the Japanese market indicates that the reform has been successfully thought out and implemented, and the rates proposed as alternatives are well able to replace the JPY LIBOR rate. However, it should be noted that in this market it was decided that there are three alternatives to choose from covering both interbank rates and risk-free rates. These rates are referred to as: TONA, TIBOR and TORF. Under these circumstances, market participants must consider the optimal choice of comparative options depending on their financial products, the nature of the transactions they are dealing with and their own individual business needs. However, judging whether they are better than the LIBOR rate, the answer is positive because they are based on acts.
Cel artykułu/hipoteza: Osią rozważań prowadzonych w niniejszym artykule jest ostateczny wybór benchmarków przez Japonię, w której funkcjonowała stopa LIBOR wyrażona w jenie japońskim. Natomiast głównym celem artykułu jest próba odpowiedzi czy nowo wybrane alternatywne wskaźniki referencyjne na rynku tokijskim spełniają cechy idealnej stopy. Metodyka: W opracowaniu dokonano przeglądu literatury, opracowań regulatorów i administratorów indeksów, prezentując etapy reformy, wybór alternatywnych stóp referencyjnych oraz dokonując analizy porównawczej z dotychczas funkcjonującą stopą LIBOR. Ze względu na przedmiot prowadzonej analizy skorzystano z podstawowych metod statystycznych. Wyniki/Rezultaty badania: Przebieg reformy benchmarków na rynku japońskim wskazuje, że została ona przemyślana i wdrożona z sukcesem, a stawki zaproponowane jako alternatywy są w stanie dobrze zastąpić stopę LIBOR JPY. Należy jednak odnotować, że na rynku tym zdecydowano się na istnienie trzech alternatywnych opcji do wyboru obejmujące zarówno stawki międzybankowe, jak i stopy wolne od ryzyka. Mowa tu o stopach: TONA, TIBOR i TORF. W tych okolicznościach uczestnicy rynku muszą rozważyć optymalny dobór opcji porównawczych w zależności od posiadanych produktów finansowych, charakteru transakcji, z którymi mają do czynienia oraz własnych indywidualnych potrzeb biznesowych. Oceniając jednak czy są lepsze od stopy LIBOR można powiedzieć, że tak ponieważ są oparte na rzeczywistych transakcjach, więc wydają się być solidniejsze.

Źródło:

Finanse i Prawo Finansowe; 2023, 4, 40; 177-199
2391-6478
2353-5601

Pojawia się w:

Finanse i Prawo Finansowe

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 66.

Tytuł:

The quality of mortality data
Jakość danych o umieralności

Autorzy:

Majewska, Justyna

Powiązania:

https://bibliotekanauki.pl/articles/587012.pdf

Data publikacji:

2017

Wydawca:

Uniwersytet Ekonomiczny w Katowicach

Tematy:

Age-specific death rate
Crude death rate
Dimensions of quality
Mortality rate
Surowy współczynnik umieralności
Współczynnik zgonów
Współczynnik zgonów według wieku
Wymiary jakości

Opis:

Measuring mortality is one of the most challenging tasks faced by demographers and epidemiologists. Collecting vital statistics on death and cause-of-death from different sources (e.g. civil registration systems, health care facilities) requires high quality of data to generate critical information to guide public health decision-making. In the first part of the study, selected quality criteria around 5 European Statistical System quality dimensions is discussed, while in the second part, the discussion is focused on three particular aspects of data quality, i.e. the completeness of the data, the age pattern of reported deaths, the plausibility of cause-of-death data.
Pomiar umieralności jest jednym z najtrudniejszych zadań, z którymi mierzą się demografowie i epidemiolodzy. Dane o zgonach i przyczynach zgonów pochodzą z różnych źródeł, co wpływa na konieczność zapewnienia dobrej jakości tych danych, by informacje z nich pozyskiwane mogły być dalej wykorzystane w procesach decyzyjnych chociażby w obrębie opieki medycznej. W pierwszej części pracy omówiono 5 kryteriów Europejskiego Systemu Statystycznego, natomiast w drugiej – 3 aspekty jakości danych, tj. kompletność danych, struktura danych o zgonach ze względu na wiek oraz wiarygodność danych o przyczynach zgonów.

Źródło:

Studia Ekonomiczne; 2017, 344; 76-96
2083-8611

Pojawia się w:

Studia Ekonomiczne

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 67.

Tytuł:

Influence of Filler Surface Modification on Static and Dynamic Mechanical Responses of Rice Husk Reinforced Linear Low-Density Polyethylene Composites

Autorzy:

Omar, Mohd Firdaus
Al Bakri Abdullah, Mohd Mustafa
Ting, Sam Sung
Jeż, Bartłomiej
Nabiałek, Marcin
Md Akil, Hazizan
Zulkepli, Nik Noriman
Abd Rahim, Shayfull Zamree
Azmi, Azida

Powiązania:

https://bibliotekanauki.pl/articles/2106572.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

silane coupling agents
strain rate
universal testing machine
split Hopkinson pressure bar
strain rate sensitivity

Opis:

Filler surface modification has become an essential approach to improve the compatibility problem between natural fillers and polymer matrices. However, there is limited work that concerns on this particular effect under dynamic loading conditions. Therefore, in this study, both untreated and treated low linear density polyethylene/rice husk composites were tested under static (0.001 s-1, 0.01 s-1 and 0.1 s-1) and dynamic loading rates (650 s-1, 900 s-1 and 1100 s-1) using universal testing machine and split Hopkinson pressure bar equipment, respectively. Rice husk filler was modified using silane coupling agents at four different concentrations (1, 3, 5 and 7% weight percentage of silane) at room temperature. This surface modification was experimentally proven by Fourier transform infrared and Field emission scanning electron microscopy. Results show that strength properties, stiffness properties and yield behaviour of treated composites were higher than untreated composites. Among the treated composites, the 5% silane weight percentage composite shows the optimum mechanical properties. Besides, the rate of sensitivity of both untreated and treated composites also shows great dependency on strain rate sensitivity with increasing strain rate. On the other hand, the thermal activation volume shows contrary trend. For fracture surface analysis, the results show that the treated LLDPE/RH composites experienced less permanent deformation as compared to untreated LLDPE/RH composites. Besides, at dynamic loading, the fracture surface analysis of the treated composites showed good attachment between RH and LLDPE.

Źródło:

Archives of Metallurgy and Materials; 2022, 67, 2; 507--519
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 68.

Tytuł:

Okun’s Law in OECD Countries in 1990 – 2013

Autorzy:

Błaszczuk, Dariusz J.

Powiązania:

https://bibliotekanauki.pl/articles/972834.pdf

Data publikacji:

2014

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki

Tematy:

economic policy targets
long-term equilibrium
Okun's law
OECD countries
GDP growth rate
unemployment rate

Opis:

Politicians try to reach targets that usually contradict. It leads to lack of optimal long-term equilibrium. The main target should be the maximal growth rate of GDP and other targets should remain within predetermined limits. Politicians should influence relations between every two targets. Empirical study of relations between unemployment and GDP growth rates is done for every OECD country basing on quarterly data for 20 years. According to the results of the investigation countries are put into “strategic groups”. Paper ends with preliminary proposals for economic policy makers.

Źródło:

Metody Ilościowe w Badaniach Ekonomicznych; 2014, 15, 2; 47-63
2082-792X

Pojawia się w:

Metody Ilościowe w Badaniach Ekonomicznych

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 69.

Tytuł:

Empirical Study on the Currency Exchange Market. Determinants on the Exchange Rate of the U.S. Dollars and the Japanese Yen by the Regression Analysis.

Autorzy:

Komiya, Tokuichi

Powiązania:

https://bibliotekanauki.pl/articles/23594099.pdf

Data publikacji:

2024-01-02

Wydawca:

Academicus. International Scientific Journal publishing house

Tematy:

Yen/$ exchange rate
interest rate differential
consumer price index differential
moving average and regression analysis

Opis:

It is widely known that in the exchange rate market there are 3 factors influential to determine the currency exchange rate between the related countries in theory; i.e., the interest rate, inflation, and expectation on the exchange rate. This paper aims to find how the exchange rate between U.S. dollar and Japanese Yen, both of which are widely recognized as major currencies in the international financial market, are affected by the 4 key variables selected here in this paper related to these 3 factors under the recent inflationary economic environment; i.e., interest rate yield of the 2 year treasury bond, inflation rate, and the two moving average of the exchange rate to be considered as rational expectation on the movement of the exchange rate. As result it is our discovery that the selected predicator variables have been influential to the daily volatility and monthly movement of the exchange rate of the Japanese Yen /US $ with evidence the two different models of the regression analysis are able to show the exchange rate are significantly correlated with these 4 key variables and strongly affected by them. Also, during the period of total 30 months from the beginning of Y2021 through the middle of Y2023 this empirical analysis has been conducted, neither interest rate parity nor the purchasing power parity, both of which are the well-known theory of the international economy, did hold due to the reason value of U.S. $ have been kept stronger along with continuous increase in the interest rate yield in the U.S than that in Japan to cope with the faster inflation speed in the U.S economy.

Źródło:

Academicus International Scientific Journal; 2024, 15, 29; 207-239
2079-3715
2309-1088

Pojawia się w:

Academicus International Scientific Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 70.

Tytuł:

DIFFERENCES AND SIMILARITIES IN THE INDEBTEDNESS OF EU MEMBER STATES AFTER LAST FINANCIAL CRISIS

Autorzy:

Lajtkepová, Eva

Powiązania:

https://bibliotekanauki.pl/articles/488984.pdf

Data publikacji:

2016

Wydawca:

Instytut Badań Gospodarczych

Tematy:

EU
euro area
indebtedness
unemployment rate

Opis:

Indebtedness is undoubtedly one of the most significant economic problems in the countries of the EU. Despite the fact that the EU-28 have adopted criteria and measures that should regulate indebtedness, the majority of member states are not keeping up to these previously agreed rules. For many countries indebtedness has become a barrier to further development. The article’s aim is to provide an overview of the indebtedness of EU member states and to explore whether this indebtedness is linked to or even dependent on selected economic characteristics (GDP, unemployment rate and social benefits paid as a share of GDP). Data from the EU-28 countries, the Eurozone and the countries outside the Eurozone will be studied separately on the assumption that there will be differences between the countries in the Eurozone and those outside it. In the investigation of the issue only secondary data from the official statistics can be used. All the data are taken from Eurostat and then processed using the standard methods of descriptive statistics and correlation analysis. The analysis carried out showed that the average indebtedness of the EU-28 countries is higher than set by the EU criteria, and at the same time confirmed that there is a difference in debt levels between countries within and outside the Eurozone. The Eurozone countries show indebtedness that is overall higher than in countries outside the Eurozone, while at the same time they show a moderately strong linear dependence both between indebtedness and unemployment rates and between indebtedness and payments of social benefits. In the countries outside the Eurozone it was shown that while the relationship between indebtedness and the unemployment rate was weak that between indebtedness and the payment of social benefits was relatively strong.

Źródło:

Oeconomia Copernicana; 2016, 7, 4; 551-563
2083-1277

Pojawia się w:

Oeconomia Copernicana

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 71.

Tytuł:

Zmienność stopy oszczędzania polskich gospodarstw domowych
Factors Influencing Private Saving Rates in Poland

Autorzy:

Rószkiewicz, Małgorzata

Powiązania:

https://bibliotekanauki.pl/articles/574870.pdf

Data publikacji:

2008-08-31

Wydawca:

Szkoła Główna Handlowa w Warszawie. Kolegium Analiz Ekonomicznych

Tematy:

saving rate
households
socioeconomic status
consumption

Opis:

The paper examines the relationship between the socioeconomic status and age of savers and saving rates. The analysis is based on the results of two empirical studies carried out in 2004 and 2006 by direct interview method on random samples of 1,305 and 1,320 households respectively. The results of the studies show that the socioeconomic status of savers is a major factor that influences private saving rates. Rószkiewicz has discovered two conflicting trends. In one trend, households with a relatively low socioeconomic status tend to become increasingly big spenders with age. The trend is the stronger the lower is the status of the household head. In another trend, households with a relatively high social status tend to limit consumption with time. This trend increases with the socioeconomic status of the household head.

Źródło:

Gospodarka Narodowa. The Polish Journal of Economics; 2008, 225, 7-8; 63-79
2300-5238

Pojawia się w:

Gospodarka Narodowa. The Polish Journal of Economics

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 72.

Tytuł:

Interest Rate Risk in Nonfinancial Company

Autorzy:

Bulski, Michał

Powiązania:

https://bibliotekanauki.pl/articles/591158.pdf

Data publikacji:

2013

Wydawca:

Uniwersytet Ekonomiczny w Katowicach

Tematy:

Ryzyko
Stopa procentowa
Interest rate
Risk

Opis:

Ryzyko stopy procentowej w przedsiębiorstwie niefinansowym

Źródło:

Studia Ekonomiczne; 2013, 127; 49-64
2083-8611

Pojawia się w:

Studia Ekonomiczne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 73.

Tytuł:

Control in loan transactions: adjusting the payments to the real inflation rates

Autorzy:

Cruz Rambaud, S.
González Sánchez, J.

Powiązania:

https://bibliotekanauki.pl/articles/205670.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Tematy:

adjustment
loan
payment
inflation
interest rate

Opis:

This paper explores the effect of inflation on general financial transactions and particularly on loans. For this purpose, inflation is specified in the mathematical expression of a capitalization or discounting function. Thus, we write these functions as the product of an inflation-free capitalization or discounting function and the law of variation of the money purchasing power. As an immediate consequence, we show that the instantaneous rate of a capitalization or discounting function is the sum of the instantaneous rates of each component. Later, this decomposition is applied to simple and compound financial transactions, leading to the equivalence among deflated amounts by means of an inflation-free capitalization or discounting function. This analysis is applied to a loan transaction where we introduce six methods to adjust the payments to the real inflation, because, in a beginning, these payments were calculated with the predicted inflation rates.

Źródło:

Control and Cybernetics; 2013, 42, 4; 829-853
0324-8569

Pojawia się w:

Control and Cybernetics

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 74.

Tytuł:

Response of Permanent Monitoring Station (PMS) to increased radioactivity level in comparison with thermoluminescent in comparison with thermoluminescent

Autorzy:

Kozak, K.
Budzanowski, M.
Gaca, P.

Powiązania:

https://bibliotekanauki.pl/articles/147575.pdf

Data publikacji:

2001

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

dose rate
environmental radioactivity
thermoluminescent dosimeters

Opis:

In this work, the response of the Permanent Monitoring Station (PMS) was compared with the readings of environmental thermoluminescent dosimeters (TLD) based on high sensitive MCP-N (LiF:Mg, Cu, P) thermoluminecent detectors and Gamma Tracer, an active device. Thermoluminescent dosimeters were installed close to an automatic warning system of PMS and to a portable Gamma Tracer monitor which is used for long term, continuous measurements in the environment at the INP. For several weeks 137Cs, 60Co, 226Ra and 241Am gamma-ray sources have been placed at distances of a few meters from the dosimeters, in order to modify the radiation environment.

Źródło:

Nukleonika; 2001, 46, 3; 101-105
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 75.

Tytuł:

Variable rate technology for a single fertilizer application

Autorzy:

Szwedziak, K,
Pochwała, S.
Polańczyk, E.

Powiązania:

https://bibliotekanauki.pl/articles/336556.pdf

Data publikacji:

2013

Wydawca:

Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych

Tematy:

fertilization
single fertilizer
variable rate
GPS

Opis:

The paper describes variable rate technology for a single fertilizer application using GPS technology. The research was conducted in one of the model agricultural holdings located in the Opole Voivodeship. The analysis was based on the yield of rape in 2007 and 2008.

Źródło:

Journal of Research and Applications in Agricultural Engineering; 2013, 58, 4; 183-185
1642-686X
2719-423X

Pojawia się w:

Journal of Research and Applications in Agricultural Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 76.

Tytuł:

Increase Hepatitis A Infections in Europe and Poland in 2017

Autorzy:

Rudzka, Paulina
Neścior, Małgorzata
Tudrujek, Magdalena
Topyła, Weronika
Tomasiewicz, Krzysztof

Powiązania:

https://bibliotekanauki.pl/articles/1178239.pdf

Data publikacji:

2018

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

hepatitis A
infectious disease
morbidity rate

Opis:

The goal of the study is to analyze the causes of rapid increase of hepatitis A morbidityratein Poland in 2017. In December 2016, the European Center for Disease Prevention and Control (ECDC) published a report concerning increase in the number of hepatitis A cases in the United Kingdom and the Netherlands in 2016 caused by two new virus serotypes previously detected in patients in Berlin. Spain, Italy and Germany also reported a regional increase incidence of HAV at that time. In addition to the increase in the number of cases, there was a disproportion between the incidence of women and men and a high percentage of patients declaring homosexual orientation. Patients were not vaccinated against Hepatitis A in the vast majority of cases. In Poland from 1st January 2017 until 12th October 2017 there have been1680 cases of hepatitis A, while in 2016 there have been only 27 infected. Until now, the main route of hepatitis A virus transmission was the faecal - oral path caused by the consumption of contaminated food and lack of hygiene. Based on data from the Voivodship Sanitary and Epidemiological Station in Poland and from the report of the European Center for Disease Prevention and Control (ECDC),the number of cases of sexual contact increased. The current situation in Europe is correlated with epidemiological data in Poland - most of infected are young men. The increasing number of incidence of HAV infection among MSM ( man who have sex with man) is a matter of concern due to the difficulties in interrupting the spreading of the epidemic and the prevention of secondary infections related to the participation of infected in the production and trade of food. The hepatitis A vaccine may be use for a prophylactic purpose, protective vaccinations for homosexual men are now particularly recommended. The information compaignes also play an important role in the prevention of the spread of hepatitis A infection.We can make a thesis based on information obtained. The deterioration of the epidemiological situation in Poland could be a consequence of the increase morbidity rate in the European Union countries.

Źródło:

World Scientific News; 2018, 93; 125-131
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 77.

Tytuł:

Design of Municipal Solid Waste Landfill for Baghdad City

Autorzy:

Takrid, Munaem Nafae
Haydar, Ahmed Al-Najar
Nabeel, Hashim Ameen Al-Tameemi
Huda, Nassar Karkoush

Powiązania:

https://bibliotekanauki.pl/articles/1178769.pdf

Data publikacji:

2017

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Municipal solid waste generation rate
landfill

Opis:

Accumulation of municipal solid waste in residential areas is one of the public health problems in Iraq. In the other hand, accurate and reliable information on solid waste generation rate are very important elements to plan and implement solid waste management system. The volume and surface area required for a landfill to dispose the municipal solid wastes generated in Baghdad city is evaluated in this study. The per capita solid wastes generation rates are measured for a family consists of 10 individuals by using portable balance (Salter, 0 to 130 kg). Probability sampling is used to determine the minimum number of measurements needed to evaluate the mean of per capita solid wastes generation rate with a certain level of precision (a specified error level of 5% is selected corresponds to 95% confidence that the mean value is in accurate estimate of the true value). The results indicate that an area of approximately 1603 m on a side is required for the next 20 years as a sanitary landfill for disposing the municipal solid wastes generated in Baghdad city.

Źródło:

World Scientific News; 2017, 90; 1-10
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 78.

Tytuł:

Reducing Creep Rate of polypropylenes by Soaking Solid solutions of CaCO3

Autorzy:

Hussain, Randa K.
Dagher, Hala F.
Khudadad, Rasol Rahman

Powiązania:

https://bibliotekanauki.pl/articles/1182918.pdf

Data publikacji:

2016

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

creep
polypropylene
calcium carbonate
creep rate

Opis:

The creep behavior of Polypropylene and Polypropylene/Calcium Carbonate were investigated by tested them at different concentration of Calcium carbonate filler (filler addition is done by soaked pp samples in CaCO3 solution) at different temperatures. A dramatically changed in the FTIR was observed when pp soaked in CaCO3 solution comparing with pristine one. It was found that the creep rate was lowered comparing to the pure Polypropylene. The Creep behavior of the polymer formed was observed to increase with increase in temperature and stress, Calcium carbonate enhanced creep rate and rapture time.

Źródło:

World Scientific News; 2016, 49, 2; 90-103
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 79.

Tytuł:

Luminescence dating of Quaternary sediments – some practical aspects

Autorzy:

Moska, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/2025218.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

luminescence dating
dose rate
equivalent dose

Opis:

Luminescence dating is based mainly on the dosimetric properties of quartz and feldspar. These minerals are among the most popular found on Earth, resulting in the possibility of using luminescence methods in practically any environment. Currently, quartz remains the best recognized mineral in terms of dosimetric properties, particularly with regards to results obtained for quartz grains, which are regarded as being the most reliable in luminescence dating. Supporters of luminescence methods are constantly growing, however, these groups do not always have sufficient knowledge to avoid even the most basic of issues that may be encountered overall – from the process of sampling through to the awareness of what a single luminescence result represents. The present paper provides an overview of several practical aspects of luminescence dating such as correct sampling procedures and all necessary information regarding the calculation of the dose rate and equivalent dose with particular reference to potential problems that occur when the age of the sample is being determined. All these aspects are crucial for obtaining a reliable dating result, on the other hand, they remain a potential source of uncertainty.

Źródło:

Studia Quaternaria; 2019, 36; 161-169
1641-5558
2300-0384

Pojawia się w:

Studia Quaternaria

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 80.

Tytuł:

Regional maps of rate of change of pollen percentage as a tool for climate change visualization

Autorzy:

Walanus, A.
Nalepka, D.

Powiązania:

https://bibliotekanauki.pl/articles/2059720.pdf

Data publikacji:

2013

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

isopollen maps
rate of change map

Opis:

Isoline maps of percentage of pollen, obtained for different time horizons through the Holocene, are a typical tool for palaeobotanical studies. In connection with the West Carpathian project the authors have developed the idea of graphically presenting on the map a rate of change of the pollen percentage. Such a map is based on the data from two time horizons. The precision of such a type of map, which shows the %/change/100 yrs, and in which the value can be negative as well as positive, is lower that of a typical isopollen map. However, this type of map gives a direct insight into changes in the plant cover, which are related to climate change.

Źródło:

Geological Quarterly; 2013, 57, 2; 353--356
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 81.

Tytuł:

The effect evaluation of physical education experimental program for physical rehabilitation groups using callanetics on progress level of students cardiovascular system with II-III degree of scoliosis

Autorzy:

Dubchuk, O.

Powiązania:

https://bibliotekanauki.pl/articles/2052242.pdf

Data publikacji:

2014

Wydawca:

Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej

Tematy:

heart rate
blood pressure
students
scoliosis

Opis:

Nowadays there is a tendency of deterioration in young people health. Despite sharp rise in disease level of students there are no changes in current program of physical education for students of higher educational institution; it is significant problem of physical culture and sport field. It is also worth noting there is no special educational program for students who are referred to physical rehabilitation groups because of their health condition. So in the face of the deterioration of students' health condition there appears a need to search the effective methods of physical education which can facilitate the solving of an actual problem. The objective of research is determination of the effectiveness of Callanetics experimentally during educational process of students of the II-III level of scoliosis. For achieving this goal there were used the following methods of research: theoretical analysis and synthesis; testing of functional indicators of cardiovascular system (heart rate and blood pressure - systolic, diastolic and pulse); statistical data processing. The analysis of results gives evidence about effectiveness of physical educational experimental program using callanetics for physical rehabilitation groups with students of the II-III level of scoliosis. It is proved that this program has had a significant impact on the functional indicators of the cardiovascular system, it is also defined as the criterion of fitness level and adaptation abilities of an organism. The results can be used in further practice of physical education classes with groups of physical rehabilitation faculty.

Źródło:

Health Problems of Civilization; 2014, 08, 2; 35-39
2353-6942
2354-0265

Pojawia się w:

Health Problems of Civilization

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 82.

Tytuł:

Morphological changes of glass bead particles upon an abrasive blasting as characterized by settling and flotation experiments

Autorzy:

Behzad, Vaziri Hassas
Güven, Onur
Baştürkcü, Esra
Çelik, Mehmet S.

Powiązania:

https://bibliotekanauki.pl/articles/1448218.pdf

Data publikacji:

2021

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

roundness
flotation
settling rate
energy barrier

Opis:

The recent developments in mineral processing led researchers to look for alternative methods and propose new mechanisms for enhancing the efficiency of relatively costly processes (e.g., flotation, aggregation), where especially dealing with fine particles. Finer the particles, the higher the role of their surface on their behavior and properties. The importance of particle morphology becomes even clearer when particle-particle and particle-bubble interactions are considered. In this study, the effect of particle shape “roundness” on the surface wettability and flotation response was investigated upon producing fine particles with the “abrasion blasting” method. In order to provide a fundamental perspective, adsorption measurements were also carried out along with the flotation experiments under the same conditions. In addition to these, zeta potential measurements were also carried out with both spherical and blasted particles as a function of collector concentration. The results suggested that the roundness of particles decreased up to a certain nozzle pressure value, which was followed by higher adsorption degrees and consequently higher flotation recoveries. Additionally, settling rate tests were also performed with very fine material to show the effect of particle morphology on particle-particle interactions. The results showed that while lower settling rate values were obtained for spherical ones, higher values were obtained in the case of the ground and blasted samples in the presence of DI water. It was concluded from this study that the “Abrasive blasting method” could be an effective alternative for tuning the surface morphology of particles and their wettability, which in turn can affect the particle interactions in the system.

Źródło:

Physicochemical Problems of Mineral Processing; 2021, 57, 2; 157-168
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 83.

Tytuł:

Effect of Using Fermented Lemna sp. in Fish Feed on Growth Rate of Nilem Carp (Osteochilus hasselti)

Autorzy:

Iskandar, Iskandar
Andriani, Yuli
Rostika, Rita
Zidni, Irfan
Riyanti, Namira Alfisah

Powiązania:

https://bibliotekanauki.pl/articles/1076662.pdf

Data publikacji:

2019

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Daily growth rate
Feed conversion ratio
Fermentation
Lemna sp.
Nilem carp
Osteochilus hasselti
Survival rate

Opis:

This research aims to determine the highest level of fermented Lemna sp. used in artficial feed to produce optimum growth rate of Nilem Carp. This research was conducted from March to July 2016, in the Ciparanje Laboratory and Aquaculture Laboratory of the Fisheries and Marine Science Faculty, Universitas Padjadjaran. The method used in this research is experimental, and is of a Completely Randomized Design (CRD). It consists of five treatments and three repetitions, providing one commercial diet (as control) and four fermented Lemna sp. levels (10%, 20%, 30%, and 40%). Collected data are analyzed with analysis of variance F-test at 95% confidence level. The parameters observed in this research are divided into four sub-parameters: nutrition changes of fermented Lemna sp., daily growth rate, feed conversion ratio and survival rate. The crude fiber content of Lemna sp. was reduced from 18.37% to 13.57%, and protein content increased from 19.37% to 23.47%, respectively, after fermentation. Based on the results of this research, fermented Lemna sp. used in fish feed at 40% level produced the best results: a daily growth rate at 0.75%, a feed conversion ratio at 3.61 and a survival rate of up to 100%.

Źródło:

World News of Natural Sciences; 2019, 26; 157-166
2543-5426

Pojawia się w:

World News of Natural Sciences

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 84.

Tytuł:

Zarys algorytmu wyznaczania wskaźników eksploatacyjnych z doświadczenia
An Outline of Algorithm for Determining the Operating Rate from Experience

Autorzy:

Kaleta, R.

Powiązania:

https://bibliotekanauki.pl/articles/359359.pdf

Data publikacji:

2004

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

wskaźnik eksploatacyjny
wskaźnik niezawodności
wskaźnik bezpieczeństwa
metoda bayesowska
funkcja wiodąca rozkładu
EXPLO-SHIP 2004
operating rate
reliability rate
safety rate
Bayesian method
leading distribution function

Opis:

Zaprezentowano metodę wyznaczania wskaźników eksploatacyjnych z doświadczenia. Dokonano klasyfikacji wskaźników eksploatacyjnych. Przedstawiono metodę prezentacji wskaźników eksploatacyjnych z jednoczesną oceną tendencji ich zmian. Podano zasady zwiększania dokładności wskaźników eksploatacyjnych w miarę napływu informacji bieżącej oraz przykłady wyznaczania wskaźników funkcyjnych. Sformułowano wnioski.
A method of determining reliability rates from real life experience has been presented in this paper. Then, reliability rates have been classified. Besides, a method of presentation of reliability rates together with the evaluation of the tendency of their changes has also been put forward. Some principles of increasing the accuracy of reliability rates in accordance with current information havebeen given. There is also an example of how to determine function rates. Finally, the author has formulated conclusions.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2004, 1 (73); 269-278
1733-8670
2392-0378

Pojawia się w:

Zeszyty Naukowe Akademii Morskiej w Szczecinie

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 85.

Tytuł:

Unemployment and new firm formation: evidence from Polish industries at the regional level

Autorzy:

Wosiek, Małgorzata

Powiązania:

https://bibliotekanauki.pl/articles/22444310.pdf

Data publikacji:

2021

Wydawca:

Instytut Badań Gospodarczych

Tematy:

unemployment rate
necessity entrepreneurship
Polish regions

Opis:

Research background: The present study takes the regional economics perspective to explaining new firm registrations. It focuses on the driving role of unemployment rate in the process of new business formation. Purpose of the article: The main goal of the study is to investigate the effect of regional unemployment (next to other regional characteristics) on subsequent new business formation in Polish regions for the period 2003?2018. The research hypothesis assumes that a rise in unemployment rate has a positive effect on subsequent new business formation. The positive unemployment push effect is expected to be stronger in operational services. Methods: In order to verify the links between unemployment rates and entrepreneurship, panel data methods (fixed effect Driscoll-Kraay and p-VAR estimators) were applied. The analyses were performed at the industry level (manufacturing, construction, wholesale and retail, hotels and restaurants, and financial services) using regional annual data for the period 2003?2018. Findings & value added: This study provides further insight into the unemployment push hypothesis by distinguishing between industry sectors and by considering regional specificities in post-communist economies (e.g. Poland). The findings provide value for policy-makers regarding the selection of policy instruments intended to stimulate regional development through entrepreneurship in lagged areas.

Źródło:

Equilibrium. Quarterly Journal of Economics and Economic Policy; 2021, 16, 4; 765-782
1689-765X
2353-3293

Pojawia się w:

Equilibrium. Quarterly Journal of Economics and Economic Policy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 86.

Tytuł:

Modelling of exchange rate effects and complimentaries between agriculture and industry in Ukraine

Autorzy:

Shevchuk, V.

Powiązania:

https://bibliotekanauki.pl/articles/94973.pdf

Data publikacji:

2016

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

Tematy:

agriculture
industry
nominal exchange rate
Ukraine

Opis:

This paper examines links between the exchange rate, agricultural and industrial outputs in Ukraine. This is estimated using monthly data for the 2001−2015 period. Results provide evidence that there is a positive spillover from agriculture to industry, being in line with modern arguments on the role of agricultural sector in economic growth (infrastructural spillovers, rural income effects, provision of resources for an industrialized economy). However, industrial output squeezes out agricultural production in the short run. Depreciation of the nominal (real) exchange rate has an expansionary effect on industrial output, but it is harmful for agriculture. From a policy perspective, the results suggest that agriculture-supporting policies should be productive in the industrialization context either.

Źródło:

Information Systems in Management; 2016, 5, 3; 401-412
2084-5537
2544-1728

Pojawia się w:

Information Systems in Management

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 87.

Tytuł:

Influence of strain rate on tensile strength of woven geotextile in the selected range of temperature

Autorzy:

Stępień, S.
Szymański, A.

Powiązania:

https://bibliotekanauki.pl/articles/178502.pdf

Data publikacji:

2015

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

geotextile
tensile strength
strain rate
temperature

Opis:

Investigation of geosynthetics behaviour has been carried out for many years. Before using geosynthetics in practice, the standard laboratory tests had been carried out to determine basic mechanical parameters. In order to examine the tensile strength of the sample which extends at a constant strain rate, one should measure the value of the tensile force and strain. Note that geosynthetics work under different conditions of stretching and temperatures, which significantly reduce the strength of these materials. The paper presents results of the tensile test of geotextile at different strain rates and temperatures from 20 °C to 100 °C. The aim of this study was to determine the effect of temperature and strain rate on tensile strength and strain of the woven geotextile. The article presents the method of investigation and the results. The data obtained allowed us to assess the parameters of material which should be considered in the design of the load-bearing structures that work at temperatures up to 100 °C.

Źródło:

Studia Geotechnica et Mechanica; 2015, 37, 2; 57-60
0137-6365
2083-831X

Pojawia się w:

Studia Geotechnica et Mechanica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 88.

Tytuł:

Association between coal and firewood combustion and hospital admissions and mortality in Chile 2015 - an ecological approach

Autorzy:

Paredes, M.C.
Munoz, M.P.
Salgado, M.V.
Maldonado, A.K.

Powiązania:

https://bibliotekanauki.pl/articles/2085865.pdf

Data publikacji:

2020

Wydawca:

Instytut Medycyny Wsi

Tematy:

air pollution
biomass
mortality
hospitalization rate

Opis:

Introduction and objective. Burning coal and firewood generates toxic emissions that are associated with respiratory illness, cardiovascular disease, and even death. The aim of the study is to evaluate the association between county-level prevalence of household coal and firewood use and health outcomes, including total, respiratory, and cardiovascular mortality, as well as total and respiratory hospitalization rates. Materials and method. The ecological study included data on the use of household coal and firewood in 139 counties obtained from the 2015 Chilean National Socio-economic Characterization Survey. Total, respiratory, and cardiovascular mortality, as well as total and respiratory hospitalization rates, were obtained from the Department of Health Statistics. Poisson models with robust error variance, Pearson linear correlation coefficients, and scatterplots were used to explore associations between household coal and firewood use and morbidity-mortality, stratifying by geographic zone. Results. Total, respiratory, and cardiovascular mortality and total and respiratory hospitalization rates were 5.7 per 1,000, 552 per 100,000, 157 per 100,000, 92.5 per 1000, and 8.8 per 1000 inhabitants, respectively. The median prevalence of coal use for residential cooking, heating, or water heating was 3.64%, while the median prevalence of firewood combustion was 12%. In southern counties, age- and gender-adjusted respiratory mortality increased 2.02 (95% CI: 1.17–3.50), 1.5 (95% CI: 1.11–1.89), and 1.76-fold (95% CI: 1.19–2.60) for each percentage increase in household coal and firewood use for heating, cooking and heating water, respectively. Conclusions. The prevalence of household coal and firewood used for heating and cooking was positively correlated with respiratory mortality and hospitalization in southern zone counties.

Źródło:

Annals of Agricultural and Environmental Medicine; 2020, 27, 3; 418-426
1232-1966

Pojawia się w:

Annals of Agricultural and Environmental Medicine

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 89.

Tytuł:

Wpływ wysokości długu publicznego na koszty jego obsługi
Impact of the Level of Public Debt on its Service Costs

Autorzy:

Brzozowski, Michał

Powiązania:

https://bibliotekanauki.pl/articles/956883.pdf

Data publikacji:

2013

Wydawca:

Akademia Leona Koźmińskiego w Warszawie

Tematy:

interest rate
public debt
Non-linearity

Opis:

Purpose: The article aims at analyzing the functional form of the relation between the level of public debt and the government bond yields in both developed and developing countries. A surge in public indebtedness following the financial crisis in 2008-2010 undermined the credibility of sovereigns in the credit markets. As a result, the government bond yields have risen, thus amplifying the problem of rapidly expanding public debts. The purpose of the article is to estimate the threshold value of government debt above which its service costs rapidly increase. Methodology: The relation between the 10-year government bond real interest rate and the level of debt is investigated with the use of spline regression with cubic splines. The regression model is estimated using annual data for 66 countries that spans between the years 1980-2010. An additional analysis is conducted for the last decade and after splitting the sample into high-income and catching-up countries. Findings: In the sample that covers all countries and the whole 1980-2010 period no relation between the level of debt and interest rate has been detected. In the years 2001-2010 the threshold value of debt above which the real interest rate starts to grow rapidly is estimated to be around 150% of GDP in catching-up countries and about 110% of GDP in high-income countries. Research implications: An analysis of the impact of fiscal policy on the level of interest should take into account the likely non-linearity of the relationship. Originality: Spline regression has not yet been used in the analysis of the relation between debt and interest rate.

Źródło:

Management and Business Administration. Central Europe; 2013, 21, 2(121); 49-63
2084-3356

Pojawia się w:

Management and Business Administration. Central Europe

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 90.

Tytuł:

Analytical analysis of cavitating flow in Venturi tube on the basis of experimental data

Autorzy:

Niedźwiedzka, A.
Sobieski, W.

Powiązania:

https://bibliotekanauki.pl/articles/298422.pdf

Data publikacji:

2016

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie

Tematy:

cavitation
Venturi tube
mass flow rate

Opis:

The content of this article is a direct continuation of the prior experimental works on the topic of cloud cavitation in Venturis. The results of the experimental tests were used to create a set of characteristics for three types of Venturis. The article has two aims: 1) verification of the similarity between the characteristics obtained and reported in the literature, 2) verification of the range of the obtained characteristics with respect to parallel diagrams. Both aims were achieved, which confirms that the quality of the prior results of the experimental measurements is at least sufficient to realize the main objective of the whole project: creation of numerical models of cavitating flow in Venturis. The literature overview showed that the issue has been not solved until today, even at the qualitative level. This reason was the motivation for the undertaken research, including contents of the article.

Źródło:

Technical Sciences / University of Warmia and Mazury in Olsztyn; 2016, 19(3); 215-229
1505-4675
2083-4527

Pojawia się w:

Technical Sciences / University of Warmia and Mazury in Olsztyn

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 91.

Tytuł:

Diminution of sugar losses in molasses and the increase of crystalization rate owing to the decolorization of thin juice
Możliwość zminiejszenia strat cukru i przyspieszenia krystalizacji dzięki odbarwianiu soku rzadkiego

Autorzy:

Zaorska, H.

Powiązania:

https://bibliotekanauki.pl/articles/1398344.pdf

Data publikacji:

1980

Wydawca:

Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie

Tematy:

sugar technology
crystallization rate
sugar losses

Opis:

The measured values of crystallization rate of sucrose from various factory syrups were compared and on these grounds the coefficients of slowing down crystallization rate were calculated depending on contents of non-sugars and colouning matter in the crystallized syrup. Basing on the obtained. mathematical equations and the chemical analysis data it is possible to calculate the crystallization rate of sucrose from the factory liquor.
Straty cukru w melasie, w normalnych warunkach przerobu buraków, wynoszą 10-12% licząc na masę cukru wprowadzonego wraz z burakami. Badano szybkość krystalizacji sacharozy z roztworów cukrowniczych o różnym zabarwieniu. W tym celu przygotowano techniczne syropy międzykryształowe pobrane podczas krystalizacji cukru I, II i III rzutu oraz syropy międzykryształowe pobrane podczas krystalizacji cukru I, II i III rzutu z syropów o znacznie niższym zabarwieniu otrzymanych z odbarwionego soku rzadkiego (tab. 1 i 2). W specjalnie przygotowanej aparaturze (rys. 1) wykonano pomiary szybkości krystalizacji sacharozy z roztworów cukru rafinowanego, z technicznych syropów międzykryształowych oraz z syropów międzykryształowych o obniżonym zabarwieniu. Porównano zmierzone wartości liczbowe szybkości krystalizacji sacharozy i na tej podstawie wyliczono współczynnik hamowania szybkości krystalizacji η, zależny od zawartości niecukrów i zawartości ciał barwnych w syropie poddawanym krystalizacji (tabl. 3 i 4). η = η₁•η₂ gdzie η - współczynnik określający hamowanie szybkości krystalizacji sacharozy w roztworach nieczystych, η₁ - współczynnik hamowania szybkości krystalizacji zależny od zawartości niecukrów, η₂ - współczynnik hamowania szybkości krystalizacji zależny od zawartości ciał barwnych i innych związków powierzchniowo czynnych. Wyliczono wartości liczbowe współczynnika η dla roztworów o czystości od 98 do 60 i o zabarwieniu odpowiadającemu absorbancji właściwej od 0,040 do 5,000 przy długości fali światła 560 nm (tab. 5). Na podstawie wykonanych analiz porównano wielkość strat cukru w melasie w przypadku stosowania klasycznego sposobu oczyszczania soku oraz oczyszczania soku połączonego z odbarwianiem soku rzadkiego (tab. 7). Dzięki odbarwianiu soku rzadkiego stwierdzono następujące korzyści: a) znaczne zmniejszenie ilości niecukrów w odbarwionym soku, co wpływa na zmniejszenie ilości cukru pozostałego w melasie, b) podwyższenie wydajności cukru białego oraz c) przyspieszenie krystalizacji poszczególnych cukrzyc o ok. 30%. Na podstawie uzyskanych równań matematycznych oraz oznaczenia czystości i zabarwienia syropu, z którego krystalizuje się sacharozę można wyliczyć szybkość krystalizacji sacharozy z danego roztworu technicznego w stosunku do szybkości krystalizacji sacharozy z czystego roztworu

Źródło:

Acta Alimentaria Polonica; 1980, 06, 3; 77-92
0137-1495

Pojawia się w:

Acta Alimentaria Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 92.

Tytuł:

The problem with flow in radial channels synchronous machine

Autorzy:

Makki, Z.
Janda, M.
Deeb, R.

Powiązania:

https://bibliotekanauki.pl/articles/377188.pdf

Data publikacji:

2012

Wydawca:

Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej

Tematy:

radial channels
synchronous machine
flow rate

Opis:

This paper describes the use of computational methods for solving the flow of the air-cooling in the large synchronous machines where it is used to cool the stator winding and stator radial channels which are located between the stator packet sheets. The overall process flow is mostly influenced by the size of air gap between stator and rotor, the shape of the radial channels, and by flow rates in machines. This paper mostly discusses about the influence flow rate of the cooling medium which has effects on the pressure distribution and flow rate in the radial channels. Cooling medium considered in this article an air and for and for calculation was chosen ANSYS CFX.

Źródło:

Poznan University of Technology Academic Journals. Electrical Engineering; 2012, 72; 75-82
1897-0737

Pojawia się w:

Poznan University of Technology Academic Journals. Electrical Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 93.

Tytuł:

Extrudable Gassy Pyrotechnic Time Delay Compositions

Autorzy:

Grobler, J. M.
Cowgill, A. W.
Focke, W. W.
Labuschagne, G.

Powiązania:

https://bibliotekanauki.pl/articles/358306.pdf

Data publikacji:

2018

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

polymer
burning rate
pyrotechnic
ignition time

Opis:

A copolymer of chlorotrifluoroethylene and vinylidene fluoride was investigated to assess its viability as an oxidiser, for aluminium as the fuel, in an extrudable pyrotechnic composition for application in 3D printing. Experimental results and EKVI thermochemical modelling suggested that a fuel loading of 30 wt.% would provide the maximum energy output. DTA and TGA analysis were performed in order to ascertain processing limits. With the addition of a processing aid LFC-1® samples could be extruded successfully. Printing with the compositions had limited success. The high melt viscosity paired with the filament’s susceptibility to excessive preheating caused the print quality to be low. Delamination did not occur due to good fusion achieved during layer deposition. With minor compositional adjustments printing quality could be improvedy.

Źródło:

Central European Journal of Energetic Materials; 2018, 15, 2; 299-314
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 94.

Tytuł:

Mechanical Activation of Al/MoO3 Thermite as a Component of Energetic Condensed Systems to Increase Its Effciency

Autorzy:

Meerov, D.
Ivanov, D.
Monogarov, K.
Muravyev, N.
Pivkina, A.
Frolov, Y.

Powiązania:

https://bibliotekanauki.pl/articles/358816.pdf

Data publikacji:

2009

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

thermites
burning rate
nano-MoO3

Opis:

In the present work a stoichiometric energetic compositions Al+MoO3 prepared by dry mixing and by reactive milling of micro-scale particles were investigated. Morphology, particle size and surface structure of produced powders were examined using scanning electron microscopy, atomic-force microscopy, laser diffractometry and BET analysis. DSC/TG data were processed to obtain kinetic mechanism of the reaction between Al and MoO3. The combustion rate of Al+MoO3 thermite mixture increases with pressure, reaching a maximum at ~10 atm, and then decreases with further pressure increase. The rise of combustion rate at the low range of pressure is associated with the rise in the extent of the vapour phase penetrating the pores of the pressed sample as the ambient pressure increases. However, at a higher pressure the gas formation is suppressed, and the melt formed in the combustion process can selectively wet the pores resulting in inhibition of reaction. Burning rates of mechanical activated system Al+MoO3 are two times higher then not-activated system at ambient pressure ~10 atm and 8 times higher at ~40 atm. In additional experiments, nano-scale MoO3 powder was prepared by evaporation with a subsequent condensation onto cooled plate in an inert-gas fow. Scanning electron microscopy showed that nano-MoO3 particles are absolutely spherical with mean diameter ~100 nm, and atomic-force microscopy 278 D. Meerov et al. reveals smaller particles with mean diameter ~5-30 nm. DSC/TG data showed that the nano-MoO3 starts to sublime earlier than micro MoO3. The use of nano-sized components could considerably increase the burning rates of energetic condensed systems, because of its large specifc surface, lower temperature of sublimation, and high reaction ability.

Źródło:

Central European Journal of Energetic Materials; 2009, 6, 3-4; 277-289
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 95.

Tytuł:

Combustion of Energetic Systems Based on HMX and Aluminum: Infuence of Particle Size and Mixing Technology

Autorzy:

Muravyev, N.
Frolov, Y.
Pivkina, A.
Monogarov, K.
Ivanov, D.
Meerov, D.
Fomenkov, I.

Powiązania:

https://bibliotekanauki.pl/articles/358822.pdf

Data publikacji:

2009

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

energetic systems
burning rate
HMX
aluminium

Opis:

In this work the complex experimental investigation of the microstructure and burning parameters of HMX-monopropellant and 25%Al/75%HMX energetic systems was carried on with the particle size variation. Components, their mixtures, pressed samples, and the combustion products (agglomerates) collected from a burning surface by QPCB (quench particle collection bomb) technique were investigated. Two types of HMX particles: micro-sized (mHMX) and ultrafne (uHMX) and aluminium powders: micro- and ultra-sized (ALEXTM) were used. Morphology and particle size were examined by atomic-force microscopy (AFM), scanning electron microscopy (SEM) and BET-analysis. AFM analysis shows the ALEXTM average volume particle size is 180 nm. It was shown, that the monopropellant's burning rates of the micro- and ultra-sized HMX are almost identical in the pressure range 20-100 atm. Two mixing technologies to prepare Al/HMX compositions were used: (i) conventional "dry" mixing and (ii) "wet" technique with ultrasonic processing in diethyl ether. Applying of ultrasonic technique results in a burning rate increase up to 18% comparing to "dry" mixing (under pressure 60 atm). The highest combustion rate was determined for composition of mHMX/ALEXTM (porosity 13%). Infuence of component N. Muravyev et al. size and composition's microstructure on the burning rate of energetic systems is discussed and analyzed.

Źródło:

Central European Journal of Energetic Materials; 2009, 6, 2; 195-210
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 96.

Tytuł:

Clastogenic effects in human lymphocytes exposed to low and high dose rate X-ray irradiation and vitamin C

Autorzy:

Konopacka, M.
Rogoliński, J.

Powiązania:

https://bibliotekanauki.pl/articles/147589.pdf

Data publikacji:

2011

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

vitamin C
X-radiation
dose rate

Opis:

In the present work we investigated the ability of vitamin C to modulate clastogenic effects induced in cultured human lymphocytes by X-irradiation delivered at either high (1 Gy/min) or low dose rate (0.24 Gy/min). Biological effects of the irradiation were estimated by cytokinesis-block micronucleus assay including the analysis of the frequency of micronuclei (MN) and apoptotic cells as well as calculation of nuclear division index (NDI). The numbers of micronucleated binucleate lymphocytes (MNCBL) were 24.85 š 2.67% and 32.56 š 3.17% in cultures exposed to X-rays (2 Gy) delivered at low and high dose rates, respectively. Addition of vitamin C (1-20 mi g/ml) to the medium of cultures irradiated with the low dose rate reduced the frequency of micronucleated lymphocytes with multiple MN in a concentration-dependent manner. Lymphocytes exposed to the high dose rate radiation showed a U-shape response: low concentration of vitamin C significantly reduced the number of MN, whereas high concentration influenced the radiation-induced total number of micronucleated cells insignificantly, although it increased the number of cells with multiple MN. Addition of vitamin C significantly reduced the fraction of apoptotic cells, irrespective of the X-ray dose rate. These results indicate that radiation dose rate is an important exposure factor, not only in terms of biological cell response to irradiation, but also with respect to the modulating effects of antioxidants.

Źródło:

Nukleonika; 2011, 56, 4; 253-257
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 97.

Tytuł:

Determination of exhalation rates through measurements of alpha and beta radiation with the aid of liquid scintillation counter

Autorzy:

Chau, N.
Chruściel, E.

Powiązania:

https://bibliotekanauki.pl/articles/148422.pdf

Data publikacji:

2003

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

radon
exhalation rate
iquid scintillation counter

Opis:

In this paper, a method for the determination of the relative and mass exhalation rates is presented. For the measurement of radon content in an emanation chamber, an ?/ß liquid scintillation counter was applied. The method was preliminarily tested on the following samples: (1) samples of uranium tailing piles in the Kowary region, (2) samples obtained by mixing of the mentioned waste with various materials such as cement, gypsum and anhydrite and (3) samples of some building materials.

Źródło:

Nukleonika; 2003, 48, 3; 133-136
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 98.

Tytuł:

Blast loading on aluminum foam microstructure

Autorzy:

Miedzińska, D.
Panowicz, R.

Powiązania:

https://bibliotekanauki.pl/articles/244041.pdf

Data publikacji:

2010

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

microstructure
aluminium foam
strain rate effect

Opis:

One of the possible options as a material for protective layers is aluminum foams which become also very popular due to their lightweight and excellent plastic energy absorbing properties. Such characteristics have been appreciated by the automotive industry with continued research to further understand foam properties. Compressed foaming materials exhibit extensive plastic response, while the initial elastic region is limited in tension by a tensile brittle-failure stress. Aluminum foams have become also an attractive material as blast protective layers due to their desirable compressive properties. With different material engineering techniques (as, for example double-layer foam cladding) they can be customized to achieve the most desirable properties. Energy absorption capacity of foams microstructures under blast load was analytically confirmed based on a rigid-perfectly plastic-locking foam model Initial research indicates that energy absorbed by the cladding is much larger than that under quasi-static conditions due to strain rate effect. In this paper a numerical model of a closed cell aluminum foam idealistic microstructure was presented. The quasi static compression tests were carried out with the use of LS Dyna computer code. Then the sample was numerically loaded with the blast wavefrom detonation of explosives and its behavior was analyzed. The results ofboth analyses were compared.

Źródło:

Journal of KONES; 2010, 17, 3; 287-292
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 99.

Tytuł:

THE IMPACTS OF EXCHANGE-RATE POLICIES ON THE FOREIGN TRADE: THE CASE OF TURKEY

Autorzy:

Akan, Yusuf
Arslan, İbrahim

Powiązania:

https://bibliotekanauki.pl/articles/450482.pdf

Data publikacji:

2008

Wydawca:

Uniwersytet Gdański. Wydawnictwo Uniwersytetu Gdańskiego

Tematy:

Exchange Rate
Foreign Trade
Turkish Economy

Opis:

This study aims at exploring the effects of exchange rate policies on the foreign trade. In order to capture this effect, foreign exchange rates and terms of trade are analyzed both theoretically and within the context of their historical development. As well as theoretical relationship of these variables, their development and application especially after 1980 in Turkey are also studied. Throughout this article, causality relation and its direction between exchange rate and foreign trade has been studied. They are analyzed with Granger causality test and regression analysis based on 1980-2006 yearly data. It is seen that foreign exchange rates have undeniable however in the short term- effects on the terms of trade but moreover, in the long term the general durability and productivity is more vital.

Źródło:

International Journal of Emerging and Transition Economies (IJETE); 2008, 1, 2; 247-256
1308-2701

Pojawia się w:

International Journal of Emerging and Transition Economies (IJETE)

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 100.

Tytuł:

Reliability Design of Complex Systems by Minimizing the Lifetime Variance

Autorzy:

Łobos, E.
Momot, M.

Powiązania:

https://bibliotekanauki.pl/articles/908509.pdf

Data publikacji:

2002

Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Tematy:

matematyka
reliability
constant failure rate
redundancy

Opis:

The problem considered in this paper is the minimization of the lifetime variance of a complex system subject to its expected life and economic constraints. The example of a bridge network, in which all elements have constant failure rates, illustrates the problem. A numerical algorithm for solving this optimization problem by using exact formulae for system lifetime moments is included. Using this algorithm, we can obtain results better than the solutions known from earlier papers.

Źródło:

International Journal of Applied Mathematics and Computer Science; 2002, 12, 4; 553-557
1641-876X
2083-8492

Pojawia się w:

International Journal of Applied Mathematics and Computer Science

Dostawca treści:

Biblioteka Nauki

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