Skocz do pozycji: 1.

Tytuł:

Analysis of the Influence of the Application of Effective Microorganisms on the Dynamics of Spring Wheat Emergence

Autorzy:

Piotrowska, Anna
Boruszko, Dariusz

Powiązania:

https://bibliotekanauki.pl/articles/2069899.pdf

Data publikacji:

2021

Wydawca:

Politechnika Koszalińska. Wydawnictwo Uczelniane

Tematy:

Effective Microorganisms
wheat

Opis:

Deterioration of the natural environment as a result of violation of its natural structures and self-regulatory mechanisms causes an urgent need to replace chemicals with effective and multidirectional biopreparations. Reduction of the amount of chemicals used in agriculture becomes possible through the use of Effective Microorganisms. This will reduce the burden on the environment. Agriculture that uses EM technology can count on help with germination rates; emergence uniformity; and crop yields, for example. EM formulations contain a mixture of different coexisting microorganisms. The following paper presents the results of own research on the use of Effective Microorganisms in seed dressing of spring wheat. It was shown that the microbial preparation EM Naturally Active affects the increase of wheat seed germination dynamics.

Źródło:

Rocznik Ochrona Środowiska; 2021, 23; 684--693
1506-218X

Pojawia się w:

Rocznik Ochrona Środowiska

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

Determining effective length for 40 HM-T steel by use of non-local line method concept

Autorzy:

Robak, G.
Krzyżak, D.
Cichański, A.

Powiązania:

https://bibliotekanauki.pl/articles/259515.pdf

Data publikacji:

2018

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

weight function
effective length

Opis:

In the paper, the concept of non-local line method is presented and used for determining the effective length for notched elements. Experimental tests and calculations were performed for 40 HM-T (42CrMo4+QT) steel made specimens of two types, i.e. smooth specimens, and notched specimens with notch radius equal to 0.2 mm, 0.5 mm, 0.8 mm, and 1 mm. The performed FEM calculations took into account the multi-linear hardening model and cyclic material properties. The concept of the presented non-local line method bases on finding the position of critical plane and determining the effective length, meant as the fracture process zone. During numerical stress gradient simulations, also the weight function was implemented. It was observed that the effective length increases as the load increases.

Źródło:

Polish Maritime Research; 2018, 1; 128-136
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Temperance and prudence as virtues of an effective altruist

Autorzy:

Synowiec, Jakub

Powiązania:

https://bibliotekanauki.pl/articles/2195242.pdf

Data publikacji:

2020

Wydawca:

Uniwersytet Papieski Jana Pawła II w Krakowie

Tematy:

Effective Altruism
temperance
prudence

Opis:

The aim of the paper is to analyze the importance of two virtues: temperance and prudence for genesis of the Effective Altruism and practice of life of effective altruists, on the basis of philosophical works of two main representatives of the idea and movement: Peter Singer and William MacAskill. In the first part of the paper genesis of the movement and its basic assumptions are presented. Then, the paper focuses on the role of temperance and prudence in both theoretical refl ection on effective altruism and practice of life of people identifying themselves with the movement, with reference to Aristotle’s understanding of the virtues. It is argued, that these virtues are crucial in the practice of life of an effective altruist. In the last part the paper focuses on the idea that Effective Altruism is in a sense an alternative to consumerism and can play a role in bringing mentioned virtues back into public life.

Źródło:

Logos i Ethos; 2020, 54; 73-93
0867-8308

Pojawia się w:

Logos i Ethos

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Ultrasonic Synthetic Apertures: Review

Autorzy:

Nowicki, A.
Gambin, B.

Powiązania:

https://bibliotekanauki.pl/articles/176456.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

synthetic aperture
effective aperture
ultrasonography

Opis:

In the paper the concept of synthetic aperture used for high resolution/high frame rate ultrasonic imaging is reviewed. The synthetic aperture technique allows building extended “virtual” apertures, synthesized from smaller real aperture resulting in improved lateral resolution along full penetration depth without sacrificing the frame rate. Especially, four methods, synthetic aperture focusing (SAF), multi-element synthetic aperture focusing (M-SAF), synthetic receive aperture (SRA) and synthetic transmit aperture (STA) are addressed. The effective aperture function, describing two-way, far field radiation is a useful tool in beam pattern analysis. Some basic notations, which are used to calculate the effective aperture are introduced in Appendix.

Źródło:

Archives of Acoustics; 2014, 39, 4; 427-438
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Application of the Wolfs Algorithm in Constructing Effective Portfolios
Zastosowanie algorytmu Wolfa do wyznaczania portfela efektywnego

Autorzy:

Olesinkiewicz, Jacek
Rutkowska-Ziarko, Anna

Powiązania:

https://bibliotekanauki.pl/articles/904917.pdf

Data publikacji:

2004

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

quadratic programming
effective portfolio
risk

Opis:

The aim of this paper is to present a method of constructing effective portfolios with application of Wolfs algorithm. The effective portfolios are understood as those which have the lowest risk at give rate of return, and, conversely, which have the highest returns at given risk level. In classic Markowitz model, the rate of return is understood as expected returns which in practice is replaced by a mean return. The variance of the portfolio returns is considered as the risk measure. Ready-made programs may be used to construct effective portfolios. In practice, using these application causes some problems. In order to calculate the portfolios efficiently, we have written an application in the Delphi programming language using a suitably adapted Wolf’s algorithm.
Celem artykułu jest przedstawienie metody uzyskiwania portfeli efektywnych przy zastosowaniu algorytmu Wolfa, czyli portfeli, które przy danej stopie zwrotu posiadałyby najniższe ryzyko, zaś dla danego poziomu ryzyka charakteryzowałyby się najwyższą stopą zwrotu. W klasycznym modelu Markowitza przez stopę zwrotu, rozumie się oczekiwaną stopę zwrotu w praktyce zastępowaną średnią stopą zwrotu, za miarę ryzyka przyjmuje się wariancję stóp zwrotu z portfela. W celu wyznaczenia portfela efektywnego można poshiżyć się gotowymi programami. W praktyce wykorzystanie tych aplikacji stwarza pewne problemy. By sprawnie wyznaczać portfele efektywne napisaliśmy program w Delphi wykorzystujący odpowiednio dostosowany algorytm Wolfa.

Źródło:

Acta Universitatis Lodziensis. Folia Oeconomica; 2004, 175
0208-6018
2353-7663

Pojawia się w:

Acta Universitatis Lodziensis. Folia Oeconomica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

The Effect of Using Effective Microorganisms on the Changes in the Chemical Composition of Spring Wheat

Autorzy:

Piotrowska, Anna
Boruszko, Dariusz

Powiązania:

https://bibliotekanauki.pl/articles/2105286.pdf

Data publikacji:

2022

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

effective microorganisms
macronutrients
micronutrients
wheat

Opis:

The world’s noticeable population growth is associated with an increased demand for agricultural products. The search for new solutions to increase crop productivity while ensuring environmental stability is becoming a key role. One such method is the use of the biopreparations containing Effective Microorganisms. EM consist of about 80 species of selected aerobic and anaerobic microorganisms, which have the ability to restore the biological balance. Professor Teruo Higa of Ryukyus University in Okinawa is the creator of Effective Microorganisms. When added to agricultural ecosystems they stimulate plant growth, improve the condition of soils affected by excessive use of chemical fertilizers allowing insoluble forms of elements to be transformed into plant-available forms and protect them from certain diseases and pests. This solution is an ecological alternative to conventional technologies and does not further pollute the ecosystem, which is crucial. Organic fertilizers in the form of EMs are made using live microorganisms they do not only deliver nutrients to the soil but also allow inactive ones to become available. With improved nutrient uptake and protection from soil pathogens, plants develop and grow better for improved yields. They contain organic matter and one or more biologically active organic compounds (amino acids, vitamins) as well as macroand microelements that stimulate plant growth and development. They provide plants with essential substances, which are naturally synthesized in many complex biochemical processes, causing energy savings that can be used for other transformations in the plant.

Źródło:

Journal of Ecological Engineering; 2022, 23, 6; 50--57
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Determination of the effective diffusivity of cadmium(II) in calcium alginate beads

Autorzy:

Kwiatkowska-Marks, S.
Wójcik, M.
Kopiński, L.

Powiązania:

https://bibliotekanauki.pl/articles/347047.pdf

Data publikacji:

2011

Wydawca:

Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej

Tematy:

cadmium ions
alginate beads
effective diffusivity

Opis:

Effective diffusivity (De) of cadmium compounds was calculated in the beads. The study was carried out using two methods: a shrinking core model (SCM) method and a newly developed method named conductometric. It turned out to be a simple and effective method for the calculation of effective diffusivity of Cd(II) in alginate sorbents. The De values obtained by the two methods depended on the alginate content in the beads. However, SCM, in contrast to the conductometric method, gave De values increasing with increasing alginate levels in the beads and lower than the molecular diffusivity of Cd(II), this being inconsistent with the mechanism of diffusion in porous carriers. Hence, the conductometric method can be considered as one giving more reliable results, compared with the SCM method. Moreover, diffusion retardation coefficients for the alginate beads were calculated. Enhanced content of the biopolymer in the beads caused retardation of Cd(II) diffusion in the beads due to the decreasing calculated retardation coefficients with the increasing alginate contents in the beads.

Źródło:

Ars Separatoria Acta; 2011, 8; 11-23
1731-6340

Pojawia się w:

Ars Separatoria Acta

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

A contibutionto evaluation of effective moduli of trabecular bone with rod-like microstructure

Autorzy:

Gałka, A.
Telega, J.J.
Tokarzewski, S.

Powiązania:

https://bibliotekanauki.pl/articles/280148.pdf

Data publikacji:

1999

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

trabecular bone
effective elastic moduli
homogenization

Opis:

The homogenization theory has been applied to evaluation of effective moduli of a network of interconnected elastic rods modelling human cancellous bone. Numerical computations of the Young modulus, Poisson ratio and shear modulus have been carried out. The obtained results compare fevourably with available experimental data.
Teorię homogenizacji zastosowano do wyznaczania efektywnych własności mechanicznych dla regularnej sieci elastycznych prętów modelujących kość gąbczastą. Wyznaczono numerycznie efektywne stałe techniczne: moduł Younga, współczynnik Poissona i moduł ścinania. Wyniki porównano z wynikami ekperymentalnymi uzyskując dobrą zgodność.

Źródło:

Journal of Theoretical and Applied Mechanics; 1999, 3; 707-728
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Communication in times of crisis as an element of building an efficient brand

Autorzy:

Tworzydło, D.

Powiązania:

https://bibliotekanauki.pl/articles/213915.pdf

Data publikacji:

2012

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Lotnictwa

Tematy:

communication in crisis
building effective brand

Opis:

Crisis is a word which nowadays is used in all forms and contexts. The year 2008 was a prelude to what now and in the year 2011 concerns not only entrepreneurs, but also every average inhabitant of the globe. Even though the crisis, the world has found itself in, concerns mainly the economic aspects. Hardly anyone talks about its other implications such as problems in the sphere of image. Despite differing definitions, economy and image are not that far apart, as especially in case of crises both notions are closely intertwined. It is hard not to notice that in a situation where economic perturbations take place in a company, it becomes very easy to transfer such problems to the area of activities associated with image. Figures, which naturally don't lie, show us the direction, which later is taken over by messages targeted both at the interior of the organization and the external environment. This way a general crisis of a company deepens, and its situation becomes definitely uncomfortable. In such case not only the issue of economic stabilization but also the way it is presented becomes a problem. Incorrectly managed process of managing a crisis situation may contribute first of all to irreversible changes in the sphere of image or even its bankruptcy, which may in turn lead to financial losses. For this reason its is essential to prepare appropriate documentation, which can help efficiently communicate in times of crisis or avert a crisis before it actually takes place. This is the subject of this article, which is supposed to show whether Polish companies are prepared for an image crisis and how it is possible to cope with it. The article refers mainly to the results of the research carried out by a team under the guidance of the author of this article and the president of Alter Media Communications, Adam Łaszyn.

Źródło:

Prace Instytutu Lotnictwa; 2012, 2 (223); 245-256
0509-6669
2300-5408

Pojawia się w:

Prace Instytutu Lotnictwa

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Long gravity waves in a canal with a corrugated bottom in the asymptotic description

Autorzy:

Bielski, Włodzimierz
Wojnar, Ryszard

Powiązania:

https://bibliotekanauki.pl/articles/1839674.pdf

Data publikacji:

2021

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

bottom profiles
homogenization approach
effective depth

Opis:

We consider the classic Lagrange long gravitational wave of a homogeneous incompressible fluid in a shallow canal with a corrugated bottom. We use the asymptotic expansion method to find the effective depth of a one-dimensional canal and, hence, the effective wave velocity. A flow in a two-dimensional tank with a corrugated bottom is also studied by this method.

Źródło:

Journal of Theoretical and Applied Mechanics; 2021, 59, 3; 443-454
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Do mixed-data sampling models help forecast liquidity and volatility?

Autorzy:

Będowska-Sójka, Barbara
Kliber, Agata

Powiązania:

https://bibliotekanauki.pl/articles/2139332.pdf

Data publikacji:

2022-10-31

Wydawca:

Główny Urząd Statystyczny

Tematy:

liquidity
volatility
effective spread estimator
MIDAS

Opis:

This paper aims to contribute to the existing studies on the Granger-causal relationship between volatility and liquidity in the stock market. We examine whether liquidity improves volatility forecasts and whether volatility allows the improvement of liquidity forecasts. The forecasts based on the mixed-data sampling models, MIDAS, are compared to those obtained from models based on daily data. Our results show that volatility and liquidity forecasts from MIDAS models outperform naive forecasts. On the other hand, the application of mixed-data sampling models does not significantly improve the performance of the forecasts of either liquidity or volatility based on a univariate autoregressive model or a vectorautoregressive one. We found that in terms of the forecasting ability, the VAR models and the AR models seem to perform equally well, as the differences in forecasting errors generated by these two types of models are not statistically significant.

Źródło:

Przegląd Statystyczny; 2022, 69, 2; 1-19
0033-2372

Pojawia się w:

Przegląd Statystyczny

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Czy efektywne mikroorganizmy zrewolucjonizują świat?
Does effective microorganisms revolutioniz the world?

Autorzy:

Kolasa-Więcek, A.

Powiązania:

https://bibliotekanauki.pl/articles/227966.pdf

Data publikacji:

2010

Wydawca:

Wyższa Szkoła Menedżerska w Warszawie

Tematy:

technologia Efektywnych Mikroorganizmów
effective microorganisms technology

Opis:

W prezentowanym tekście przedstawiono aktualne informacje z zakresu technologii Efektywnych Mikroorganizmów. Zaprezentowano kierunki stosowania i rozwoju mikroorganizmów w Polsce i na świecie. Starano się przedstawić fakty świadczące o ich wszechstronnym i pozytywnym oddziaływaniu w wielu dziedzinach życia oraz środowiska nas otaczającego.
In the presented text current information about Effective Microorganisms Technology provides. There were alsow directions and development of microorganisms in Poland and abroad presented. Tried to present facts demonstrating their comprehensive and positive impact in many areas of life and surrounding environment.

Źródło:

Postępy Techniki Przetwórstwa Spożywczego; 2010, 1; 66-69
0867-793X
2719-3691

Pojawia się w:

Postępy Techniki Przetwórstwa Spożywczego

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

Survey the effective factors on accidents decrement in the road of Hamadan – Sanandaj

Autorzy:

Hooshmand, Khaledyan

Powiązania:

https://bibliotekanauki.pl/articles/1114184.pdf

Data publikacji:

2017

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Road
accidents
effective factors
transportation
vehicle

Opis:

In the current research, we surveyed the effective factors of accidents that had occurred on the road from Hamadan to Sanandaj. Road transportation is an inseparable part and the backbone of all transportation networks of most countries. Driving accidents are considered the major problem of road transportation and the increment process of accidents is so that it has reached crisis proportions. Basically, in road accidents, three factors are considered to be of importance: human activity, road and vehicle condition. The current research is a field study in the terms of data collection method and is considered to be Applied Research in the terms of purpose (or objective) and studied subject nature. The study population consists of suburban public transport fleet drivers working the Sanandaj - Hamadan road (26 persons). The tool was a questionnaire. In order to analyze the statistical data, the resulting information from the questionnaires were firstly extracted and then analysed by applying the Pearson correlation test. The results show that there is a clear relationship between the effective factors of accidents and road accidents.

Źródło:

World News of Natural Sciences; 2017, 11; 83-90
2543-5426

Pojawia się w:

World News of Natural Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

Differentiation of supporting methods of business informatics teaching offered by selected educational portals

Autorzy:

Owoc, Mieczysław
Hołowińska, Katarzyna

Powiązania:

https://bibliotekanauki.pl/articles/432339.pdf

Data publikacji:

2018

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

educational methods
e-portals
effective education

Opis:

Nowadays Internet technologies are becoming more capable of supporting traditional ways of teaching. Education portals in particular offer lessons in various domains as supportive means for experienced tutors to deliver knowledge to students. The aim of this study is to present the solutions offered by various educational centres and to analyse supportive methods of teaching. The paper presents. A discussion about the approaches to the formulation of a list of teaching methods supporting traditional lessons. The next part is devoted to an overview of selected educational portals offering courses in the business informatics area. Then the paper concerns the comparison of the applied methods of teaching which support classic lessons. The utility of particular methods in teaching selected courses is demonstrated and evaluated according to the defined survey assumptions. Finally, suggestions concerning the hybridisation of various supporting teaching methods are proposed

Źródło:

Informatyka Ekonomiczna; 2018, 2(48); 54-66
1507-3858

Pojawia się w:

Informatyka Ekonomiczna

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Partial pensions as a form of flexible retirement in the EU countries

Autorzy:

Bielawska, Kamila

Powiązania:

https://bibliotekanauki.pl/articles/949751.pdf

Data publikacji:

2017

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

employment
partial pension
effective retirement age

Opis:

Demographic ageing will affect the EU economy, public finances and adequacy and sustainability of pension systems. A key response to the challenge of ageing population is the extension of working lives. This paper seeks an answer for the question if the partial pension may be an efficient solution to make people work longer. Comparative analysis of the partial retirement in selected EU countries gives no unquestionable conclusions in this question, especially in terms of hours worked. The results highly depend on the construction of the partial pensions and the changes on the labour market. Taking into account both the further pension reforms to make people work longer and simultaneously the pressure on the pension replacement rates, the idea of the partial pension seems to be attractive and worth further research

Źródło:

Financial Sciences. Nauki o Finansach; 2017, 2(31); 9-18
2080-5993
2449-9811

Pojawia się w:

Financial Sciences. Nauki o Finansach

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Przemoc rówieśnicza w kontekście klimatu szkolnego
School bullying in school climate perspective

Autorzy:

Naczyński, Michał

Powiązania:

https://bibliotekanauki.pl/articles/485681.pdf

Data publikacji:

2017

Wydawca:

Instytut Studiów Międzynarodowych i Edukacji Humanum

Tematy:

school bullying, school climate, effective interventions

Opis:

School climate is a phenomenon that is increasingly spoken in the educational environment. This article focuses on a brief definition of school climate. The second part will discuss selected research reports. Part three touches on the description of selected interventions in schools that were designed to raise school climate. Information on the effectiveness of the different programs is important for practitioners and professionals working in schools.

Źródło:

Humanum. Międzynarodowe Studia Społeczno-Humanistyczne; 2017, 2(25); 209-214
1898-8431

Pojawia się w:

Humanum. Międzynarodowe Studia Społeczno-Humanistyczne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Determining the Effectiveness in Vermicomposting of Sewage Sludges and the Attempt to Increase the Effectiveness by Applying Bacterial Microorganisms

Autorzy:

Boruszko, D.

Powiązania:

https://bibliotekanauki.pl/articles/123278.pdf

Data publikacji:

2016

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

vermicomposting
sewage sludge
Effective Microorganisms Bacteria

Opis:

Applying vermicomposting process for sewage sludge treatment is a low-cost method which has been gaining a growing number of supporters around the world. In Poland it is still rather unpopular method. The following publication presents the results of 12 years (2004–2015) of research and experiments on the use of red Californian earthworm in Wastewater Treatment Plant in Zambrów. Among others, the results of analyzing vermicompost quality were shown concerning selected micro and macro elements, fertilizing value and sanitary condition. Cumulative content of the examined heavy metals was highest in 2004 and reached over 1200 mg^-1 kg s.m., whereas the lowest content of 520 mg^-1 kg s.m. was observed in 2012. The study results indicate that in the entire 12-year research period vermicompost met the standards for organic-mineral fertilizers, which means it contained over 20% of organic substance in reference to dry mass and over 1% of total nitrogen and 0.5% of phosphorous in reference to phosphorus pentoxide (P₂O₅). During the entire research period no living eggs of intestinal parasites Ascaris sp., Trichuris sp., Toxocara sp. and Salmonella bacteria were observed in the vermicompost. The research concerning red Californian earthworm proved substantial mineralization and humification of sludge. The application of EM formula considerably quickened the process and the achieved modifications in the vermicompost structure and content.

Źródło:

Journal of Ecological Engineering; 2016, 17, 3; 53-59
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Assessment of Variation in Thermal Sensations Determined Based on Effective Temperature

Autorzy:

Rymuza, Katarzyna
Radzka, Elżbieta
Świerzycka, Gracja

Powiązania:

https://bibliotekanauki.pl/articles/124983.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

thermal sensations
effective temperature
human body

Opis:

Air temperature is one of major factors in a subjective assessment of human thermal comfort and discomfort. The work draws on a series of measurements of the average daily air temperatures, relative air humidity and wind speed for 2000-2016 recorded at the Siedlce Meteorological Station. The station is part of the state observation and measurement network of the hydrological and meteorological service of The Institute of Meteorology and Water Management – National Research Institute (IMGW-PIB). The effective temperature was calculated according to the formula recommended by Missenard and the thermal sensation was determined based on a scale suggested by Baranowska. The number of days with individual thermal sensations in individual months of the long-term period was calculated, and months were put into groups of similar sensations by means of principal component analysis (PCA) and cluster analysis. In the last years (2015, 2014, 2012 and 2011) in the months representing the cold season of the year, there were more days which were very cold and cold, whereas the number of days with the thermal comfort was much lower. The long-term period was split into three groups, based on the thermal comfort in the warm season of the year. The years which formed one group included 2011, 2013, 2015 and 2016 when there were no very cold days, the least cold days and the most very hot days.

Źródło:

Journal of Ecological Engineering; 2019, 20, 2; 218-225
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

Expert technology for risk management in the implementation of QRM in a high-tech industrial enterprise

Autorzy:

Akatov, Nikolay
Mingaleva, Zhanna
Klačková, Ivana
Galieva, Gulnara
Shaidurova, Nataliy

Powiązania:

https://bibliotekanauki.pl/articles/410014.pdf

Data publikacji:

2019

Wydawca:

STE GROUP

Tematy:

effective management technology
risk management
QRM production

Opis:

In modern conditions, management technology is becoming the main instrument of competition in many areas of production and business. The article focuses on the examinations of issues related to the possibilities of introducing an integrated risk management system in modern high-tech enterprises. The main scientific research methods are bibliographic analysis, formal logic methods, comparative analysis, methods of analogies. Based on the application of the guidelines of systems’ theory, of the theory of self-organization, the theory of risk management, and the theory of reflexive control the expert technology for risk management in a hightech industrial enterprise was developed. As a result of the study, it was revealed that the use of technologies such as the ETRM will help to increase the feasibility and effectiveness of implementing complex projects such as fast-response QRM production.

Źródło:

Management Systems in Production Engineering; 2019, 4 (27); 250-254
2299-0461

Pojawia się w:

Management Systems in Production Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

Effects of different kinds of sewage sludge amendment on urban lawn grasses

Autorzy:

Wołejko, E.
Butarewicz, A.
Wydro, U.
Łoboda, T.

Powiązania:

https://bibliotekanauki.pl/articles/124382.pdf

Data publikacji:

2015

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

sewage sludge
soil
heavy metals
effective microorganisms

Opis:

The paper presents the results of research on the use of sewage sludge from the municipal sewage treatment plant in Białystok for fertilization of urban lawns. To fertilize the ground two types of deposits were used: stabilized sludge after the dewatering process in the press and granular sludge after drying in the sludge dryer. Two doses of sludge were used – 5 and 10 kg/m². Effective microorganisms (EM) were added to the test plots. Both doses of the applied sewage sludge contributed significantly to the growth of grass biomass. Aboveground biomass of the plants was significantly correlated with the concentration of Cd, Cu, Pb and Zn in the surface layer of the soil. The addition of EM to soil containing the dewatered sludge from the press reduced significantly the content of heavy metals in the soil, as opposed to the sludge in a form of granules with addition of EM, which contributed to the increase of their concentration in the soil.

Źródło:

Journal of Ecological Engineering; 2015, 16, 1; 164-170
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

Numerical Analysis of a Rolling Process for Producing Steel Balls Using Helical Rolls

Autorzy:

Chyła, P.
Pater, Z.
Tomczak, J.

Powiązania:

https://bibliotekanauki.pl/articles/353136.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

helical rolling
FEM analysis
balls
effective strain

Opis:

This paper presents the research results of the balls rolling process according to the conventional and modified methods of rolling. Theoretical analysis was carried out by using numerical methods based on the Finite Element Method. The Simufact package version 10.0 were used for calculation. Simulations of balls rolling were carried out under conditions of 3D state of strain, taking into account the effect of thermal conditions occurring during forming. The study of the achieved results showed that the best rolling process parameters were obtained for the modified method, in which the feed material is heated up to 1150 °C. In this case, the rolling parameters such as: rolling force and torque as well as tool wear reached the smallest values.

Źródło:

Archives of Metallurgy and Materials; 2016, 61, 2A; 485-492
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

Ultraviolet filters for sensors matching biological action spectra

Autorzy:

Garoli, D
Alaibac, M
Pelizzo, M G

Powiązania:

https://bibliotekanauki.pl/articles/173284.pdf

Data publikacji:

2014

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

ultraviolet
radiometers
filters
action curve
effective measurements

Opis:

A considerable interest is growing worldwide about the photobiological effects of the ultraviolet radiation; in fact, it has been demonstrated that ultraviolet radiation can affect both human health as well as the equilibrium of entire ecosystems. The relative effectiveness of ultraviolet radiation at a particular wavelength in producing a specific biological response is defined by an action spectrum. Broadband radiometers characterized by having a spectral response that matches an action spectrum allow the measure of the effective irradiance associated to an ultraviolet source. In this work we present the designs of interference filters to be used in radiometric heads. Their optimized transmission curve coupled to the spectral response of different ultraviolet photodiodes provides the match of the sensor spectral response with some selected action spectra. Development of instruments for the measurement of the effective solar irradiance is foreseen. The design of interferential filters which transmittance curve was optimized in order to match a target biological action spectrum is here presented.

Źródło:

Optica Applicata; 2014, 44, 4; 611-620
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

Improvement of accuracy of simple methods for design and analysis of a blazed phase grating microstructure

Autorzy:

Wang, W.
Jing, X.
Zhao, J.
Li, Y.
Tian, Y.

Powiązania:

https://bibliotekanauki.pl/articles/173533.pdf

Data publikacji:

2017

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

grating
effective medium theory
scalar diffraction theory

Opis:

In order to precisely analyze and design the transmittance characteristics of a blazed grating, the validity of both the scalar diffraction theory and the effective medium theory is quantitatively demonstrated. By making a comparison of diffraction efficiencies calculated by the two simplified methods and Fourier modal method, the accuracy can be obtained. It is found that when the normalized period is more than three wavelengths of the incident light, the scalar diffraction theory is useful to calculate the transmittance of the blazed grating within the error of less than 3%. The validity of the scalar diffraction theory increases when the normalized period increases. Importantly, by considering the Fresnel reflection effect, the validity of scalar diffraction theory can be significantly enhanced. Furthermore, when no higher-order diffraction waves appear and only zeroth order diffraction wave propagates, the effective medium theory is accurate to compute the diffraction efficiency within the difference of less than 1% between the zeroth order effective medium theory and Fourier modal method. The polarization characteristics of the validity of effective medium theory are also quantitatively demonstrated. The validity of the two simplified theories is dependent on not only the normalized period of surface microstructure but also the normalized groove depth.

Źródło:

Optica Applicata; 2017, 47, 2; 183-198
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

Calculating effective conductivity of heterogeneous soils by homogenization

Autorzy:

Szymkiewicz, A.

Powiązania:

https://bibliotekanauki.pl/articles/241053.pdf

Data publikacji:

2005

Wydawca:

Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN

Tematy:

effective conductivity
soil heterogeneity
groundwater flow
homogenization

Opis:

The paper concerns effective conductivity of a heterogeneous soil composed of two materials characterized by different hydraulic conductivities. According to the homogenization theory the effective conductivity is obtained from the solution of an elliptic equation for a single representative elementary volume. A numerical algorithm to solve this equation is described. Examples of calculations for periodic media with inclusions of various shapes are presented. Influence of volumetric fraction, arrangement, continuity and conductivity ratio of the two materials on the effective conductivity is investigated. Numerical results are compared with some analytical estimations available in the literature.

Źródło:

Archives of Hydro-Engineering and Environmental Mechanics; 2005, 52, 2; 111-130
1231-3726

Pojawia się w:

Archives of Hydro-Engineering and Environmental Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

The Analysis of Hospital Helicopter Landing Sites Location in Terms of their Vibroacustic Impact

Autorzy:

Chyla, Andrzej
Bukała, Michał

Powiązania:

https://bibliotekanauki.pl/articles/36407125.pdf

Data publikacji:

2019

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Lotnictwa

Tematy:

helicopter
aircraft
effective persist level
building vibration

Opis:

According to the applicable regulations, in the case of a decision on the location of an investment consisting in the construction and commissioning of a helicopter landing field, it is necessary to carry out an environmental impact assessment. At the same time, due to the emission of noise related to the expected change of acoustic climate parameters, the indicators required under the applicable law related to building acoustics and also impact of vibration on the structure of buildings should be taken into account. The article discusses particular groups of issues related to the assessment of the impact of helicopter landing field on the environment and the hospital building. On the basis of the presented results of analyzes, a postulate concerning the necessity of introducing a comprehensive assessment methodology, including specific groups of issues, was formulated.

Źródło:

Transactions on Aerospace Research; 2019, 3 (256); 43-56
0509-6669
2545-2835

Pojawia się w:

Transactions on Aerospace Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Diffusion of Cd(II), Pb(II) and Zn(II) on calcium alginate beads

Autorzy:

Kwiatkowska-Marks, Sylwia
Miłek, Justyna
Trawczyńska, Ilona

Powiązania:

https://bibliotekanauki.pl/articles/297886.pdf

Data publikacji:

2019

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie

Tematy:

effective diffusion
alginate beads
cadmium
lead
zinc

Opis:

Effective diffusion coefficients (De) for different heavy-metal salts: Cd, Pb, Zn in calcium alginate beads were determined. Their values depend on the metal type, anion from the metal salt, and the alginate content in the beads. The results of calculations indicate a decrease in the values of De, caused by an increase in the alginate content in the alginate sorbent beads. This is in agreement with the mechanism of the diffusion process taking place in porous carriers. Experimental data were found to be in good agreement with the mathematical model, as indicated by high values of the correlation coefficient.

Źródło:

Technical Sciences / University of Warmia and Mazury in Olsztyn; 2019, 22(1); 19-34
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: 27.

Tytuł:

Time Management Strategies of School Administrators Towards Effective Administration: A Phenomenological Study

Autorzy:

Naparan, Genesis B.
Tulod, Ryan G.

Powiązania:

https://bibliotekanauki.pl/articles/1964082.pdf

Data publikacji:

2021-03-31

Wydawca:

Wydawnictwo Adam Marszałek

Tematy:

Time Management
School Administrator
Phenomenology
Effective Administration

Opis:

This qualitative phenomenological study was conducted to determine the school administrators’ time management strategies and how they helped them have effective school administration. The researchers interviewed school administrators of selected elementary schools in the Western Philippines. The study results disclosed that school administrators developed time management strategies such as delegation of authorities, setting clear priorities, managing distraction, making written plans, and setting time tables. These time management strategies were focused on the administrative supervision of the school administrators. These time management strategies could make the school operation smooth and easy and help them accomplish the administrators’ tasks efficiently.

Źródło:

The New Educational Review; 2021, 63; 59-68
1732-6729

Pojawia się w:

The New Educational Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Micromechanical model of auxetic cellular materials
Model mikromechaniczny materiałów komórkowych o ujemnym współczynniku Poissona

Autorzy:

Janus-Michalska, M.

Powiązania:

https://bibliotekanauki.pl/articles/279741.pdf

Data publikacji:

2009

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

auxetic cellular materials
anisotropy
effective model
elasticity

Opis:

An effective anisotropic continuum formulation for auxetic cellular materials is the objective of this paper. A skeleton is modelled as a plane beam elastic structure with stiff joints. The skeleton topology, forming concave polygons, is responsible for negative Poisson’s ratio effect. The essential macroscopic features of mechanical behaviour are inferred from the deformation response of a representative volume element using the framework of micromechanical analysis. The strain energy of a unit cell is calculated by adding the tensile, shearing and bending strain energy of individual members. The equivalent continuum is based on averaging this energy, thus formulating the basis for computing the anisotropic stiffness matrix. The structural mechanics methodology and ANSYS finite element code are applied to solve the beam model of the skeleton. Graphical representation of certain material constants such as Young’s modulus, Poisson’s ratio, shear modulus and generalized bulk modulus is given. The results of included parametric study may be used for proper choice of geometric and material data of the skeleton for a given structural application of the anisotropic continuum.
Celem pracy jest sformułowanie efektywnego anizotropowego continuum sprężystego dla materiałów komórkowych o ujemnym współczynniku Poissona. Szkielet materiału jest modelowany przez płaską strukturę belkową połączoną w sztywnych węzłach tworzącą układ wielokątów wklęsłych. Kąty wklęsłe w strukturze materiału odpowiadają za efekt ujemnego współczynnika Poissona. Poprzez zastosowanie modelu mikromechanicznego istotne cechy mechaniczne materiału komórkowego są wyprowadzone z wyników analizy komórki reprezentatywnej. Potencjał sprężysty szkieletu komórki jest wyznaczony jako suma energii w belkach tworzących szkielet od ich rozciągania, ścinania i zginania. Efektywne continuum jest oparte na uśrednianiu potencjału sprężystego, co jest podstawą konstruowania macierzy sztywności. Metoda analizy strukturalnej przeprowadzona za pomocą programu MES-ANSYS jest stosowana dla modelu belkowego szkieletu. Jako wynik tej analizy przedstawiono graficznie rozkłady modułu Younga, współczynnika Poissona, modułu na ścinanie i uogólnionego współczynnika ściśliwości objętościowej. Studium parametryczne umożliwia prześledzenie wpływu parametrów geometrycznych struktury i charakterystyk materiału szkieletu na własności kontinuum zastępczego jako materiału o zastosowaniu strukturalnym.

Źródło:

Journal of Theoretical and Applied Mechanics; 2009, 47, 4; 737-750
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Environmental and radon measurements in the underground workplaces in the Czech Republic

Autorzy:

Thinova, L.
Rovenska, K.
Otahal, P.

Powiązania:

https://bibliotekanauki.pl/articles/148693.pdf

Data publikacji:

2010

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

underground workplaces
radon
effective dose
spectrometric analysis

Opis:

Most of radon and other environmental measurements were carried out in connection with research focused on improvement of radon dose assessment in the underground workplaces in the Czech Republic. The following methods are very useful for the detection of radon sources: air flow measurement; continual and short volume activity of radon and its progeny measurement; volume activity of thoron measurement; mapping of radon level in all workplace areas including horizontal and vertical gradient; radon in water measurement; integral radon monitor RAMARN testing, etc. In conjunction with equilibrium radon concentration (ERC) monitoring studies were conducted of radiogenic characteristics of caves clastogene and carbonate sediments, and other rock formations present in the Czech Massif and Western Carpathian. Over 150 samples of cave sediments were collected, in which the mass activities of present radionuclides were determined. Spectrometric analysis of the sediments enabled monitoring of disturbance in secular radioactive equilibrium in the given geochemical systems, through evaluation of 238U/226Ra or 228Th/224Ra proportion. Ratio of 208Tl/226Ra was monitored for the rock groups from the origin point of view assessment. Typical values for such ratio for carbonate rocks (including amphibolite and erlan) varied between 0.2–0.5, while for clastogene sediments and crystalline limestone the typical values were in the range 1.4–1.6. Conclusions from measurements were implemented in the new methodology for radon dose assessment.

Źródło:

Nukleonika; 2010, 55, 4; 491-493
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Didactic Potential of Excursion Method

Autorzy:

KROTKÝ, JAN
FADRHONC, JAN

Powiązania:

https://bibliotekanauki.pl/articles/455585.pdf

Data publikacji:

2019

Wydawca:

Uniwersytet Rzeszowski

Tematy:

excursion
didactic methods
effective education
primary school

Opis:

In the theoretical part of the article, there is a description of the excursion method and its stages. The article further describes experience with school leavers in relation to their future career and maps the main shortcomings. The research part of the article is dedicated to viewing of didactic potential of master studies students, the future teachers at 1st-5th grades.

Źródło:

Edukacja-Technika-Informatyka; 2019, 10, 2; 128-133
2080-9069

Pojawia się w:

Edukacja-Technika-Informatyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Length of proceedings as standard of due process of law in the practise of the Constitutional Court of Albania

Autorzy:

Toska Dobjani, Elsa

Powiązania:

https://bibliotekanauki.pl/articles/1036641.pdf

Data publikacji:

2016

Wydawca:

Academicus. International Scientific Journal publishing house

Tematy:

constitutional
complain
length
proceedings
remedy
effective
prevention

Opis:

ECHR, as an international treaty is part of the Albanian legal system. Among international law instruments, the ECHR enjoys a privileged status in the Albanian legal system by virtue of Article 17 paragraph 2 of the Constitution according to which restrictions to human rights and freedoms cannot infringe the substance of those rights and freedoms and in no case can exceed the restrictions provided for in the ECHR. Article 1 of the Convention requires States to secure the substance of the rights to those in their jurisdiction. The effect of Article 13 is thus to require the provision of a domestic remedy to deal with the substance of an arguable complaint under the Convention and to grant appropriate relief. The scope of this paper is to analyse the effectiveness of the complaint to the Constitutional Court with regard to length of proceedings as part of due process of law in terms of proceedings during the court trial and after the process has been finalized and the final decision should be executed.

Źródło:

Academicus International Scientific Journal; 2016, 13; 160-170
2079-3715
2309-1088

Pojawia się w:

Academicus International Scientific Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Comparison of profits of effective portfolios with non-effective portfolios taking into account the fuzzy approach

Autorzy:

Pośpiech, Ewa

Powiązania:

https://bibliotekanauki.pl/articles/1861673.pdf

Data publikacji:

2021

Wydawca:

Politechnika Śląska. Wydawnictwo Politechniki Śląskiej

Tematy:

effective portfolio
fuzzy TOPSIS
multi-criteria problem
non-effective portfolios
efektywne portfele
rozmyte TOPSIS
problem wielokryterialny
nieefektywne portfele

Opis:

Purpose: The aim of the article is to compare the results of the constructed effective portfolios and non-effective portfolios build on the basis of the value of the indicator constituting a synthetic assessment of decision variants. Design/methodology/approach: The article uses the multi-criteria TOPSIS method in the standard and fuzzy approach. It was used to evaluate listed companies that were examined in terms of selected fundamental and market characteristics. Taking into account the fuzzy method made it possible to treat the values of criteria from three years as triangular fuzzy numbers, and the values of the measure on the basis of which the ranking was created were also used to build non-effective portfolios. Findings: A multi-criteria evaluation of selected listed companies was performed and, on the basis of the obtained rankings, the sets constituting the basis for the construction of effective and non-effective portfolios were selected. The designated effective portfolios (after pre-selection using the FTOPSIS method) were in most cases more profitable than the market portfolio, while the non-effective portfolios, using TOPSIS as the pre-selection method, were (with one exception) more profitable than the effective portfolios. Research limitations/implications: It was not possible to unequivocally recommend the approach used, although the results appear promising. Practical implications: Taking into account the proposed approach, one can methodically build more profitable and more attractive portfolios. Originality/value: Non-standard approach to criteria assessments and the use of metacriterion values to determine the portfolio structure. The considerations may be of interest to stock market investors.

Źródło:

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2021, 150; 199-212
1641-3466

Pojawia się w:

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Sejsmiczna interpretacja struktury Wierzchowa dla potrzeb podziemnego składowania CO2 z wykorzystaniem efektywnych współczynników odbicia
Seismic interpretation of the Wierzchowo structure for the need of underground CO2 storage, using effective reflection coefficients

Autorzy:

Dziewińska, L.
Tarkowski, R.

Powiązania:

https://bibliotekanauki.pl/articles/394927.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN

Tematy:

efektywne współczynniki odbicia
CCS
Wierzchowo
effective reflection coefficients

Opis:

Zaprezentowano wyniki interpretacji 3 sekcji w wersji współczynników odbicia (EWO) dla struktury Wierzchowa. Wykonana interpretacja istotnie wzbogaciła zakres informacji przedstawianych w standardowych dokumentacjach sejsmicznych. Uwzględniając dane geologiczne z otworów przebijających strukturę, zidentyfikowano i skorelowano wzdłuż przekrojów kompleksy skalne oraz strefy nieciągłości tektonicznych w obrębie skał permomezozoicznych. Scharakteryzowano poziom o zwiększonej zawartości piaskowców formacji połczyńskiej, zaproponowany do składowania dwutlenku węgla. Stwierdzone zaburzenia tektoniczne występujące w obrębie formacji połczyńskiej przechodzące do wyżej zalegających warstw oraz obecność przewarstwień ilastych obniżają przydatność rozpatrywanej struktury do podziemnego składowania CO2. Wydaje się celowe szersze zastosowanie, także dla innych struktur, procesu przetwarzania materiałów sejsmicznych w postać efektywnych współczynników odbicia z zadaniem rozpoznania budowy geologicznej przypuszczalnych poziomów zbiornikowych pod kątem określenia ich przydatności do składowania gazów przemysłowych.
The paper presents the results of the interpretation of three sections of effective reflection coefficients (ERC) in the Wierzchowo structure. The interpretation significantly enriched the amount of information presented in the standard seismic materials. Taking the geological data from boreholes piercing the structure into account, the Permo-Mesozoic rock complexes and zones of tectonic discontinuities have been identified and correlated along the sections. A horizon of increased content of sandstones in the Połczyn Formation has been characterized, which is the target formation for the storage of carbon dioxide. The observed tectonic disturbances occurring within the Połczyn Formation, which continue into the overlying beds, and the presence of clayey interbeds reduce the usefulness of this structure for the underground storage of CO2. It seems advisable to use the processing of seismic materials into sections of effective reflection coefficients more widely, also for other geological formations, in the exploration of the geological structure of potential reservoir levels to determine their suitability for the storage of industrial gases.

Źródło:

Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN; 2016, 92; 261-273
2080-0819

Pojawia się w:

Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

Metody oceny efektywnej grubości docieplania ścian zewnętrznych
Methods of estimation of the effective thickness of insulating outer walls

Autorzy:

Stachniewicz, R.

Powiązania:

https://bibliotekanauki.pl/articles/402745.pdf

Data publikacji:

2012

Wydawca:

Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej

Tematy:

fizyka budowli
termomodernizacja
efektywność inwestycji
thermomodernization
effective
wall

Opis:

Dużą rolę przy określaniu efektywnej grubości izolacji termicznej ma przyjęta metoda oceny. Najczęściej spotykana prosta metoda oceny, na przykład SPBT, wskazuje na inne efektywne grubości niż metody wykorzystujące technikę dyskonta, na przykład NPV. Rozbieżności w efektywnej grubości wynikają przede wszystkim z faktu, iż metoda prosta SPBT zawęża okres rachunku do czasu zwrotu nakładów, natomiast metody dyskontowe obejmują rachunkiem ekonomicznym cały okres funkcjonowania inwestycji. Ponadto w artykule przeanalizowano wpływ cen 5 nośników energii na efektywną grubość izolacji termicznej w przykładowym domu jednorodzinnym. Efektywną grubość izolacji termicznej określono stosując prosty czas zwrotu SPBT i zaktualizowaną wartość netto NPV.
The applied method of the judgement plays a vital role in case of the determination of effective thickness of thermal isolation. Simple methods (such as SPBT - Simple Pay Back Time) point at other effective thicknesses than the methods making use of the discount technique (for example NPV – Net Present Value). The effective thickness of thermal isolation calculated with the simple method (SPBT) will be different from the second one, calculated with the method NPV. It results from the fact that the calculations making use of the SPBT method include solely the period of the expenses refund. On the other hand the calculations making use of the discount technique involve the whole period of the investment duration. Additionally in the report the influence of five kinds of fuel on effective thickness of thermal insulation in the hypothetical cottage has been analysed. The effective thickness of thermal insulation was determined applying the criterion simple payback time SPBT and net present value NPV.

Źródło:

Budownictwo i Inżynieria Środowiska; 2012, 3, 2; 103-108
2081-3279

Pojawia się w:

Budownictwo i Inżynieria Środowiska

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Numerical analysis of an open cell foam structure with the use of models based on solid finite elements

Autorzy:

Szymczyk, W.
Miedzińska, D.

Powiązania:

https://bibliotekanauki.pl/articles/245581.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

FEM modelling
open cell foam structure
effective properties

Opis:

The paper deals with the numerical analysis of foam materials. Open cell foam is investigated. Numerical simulations allow calculating modes of destruction and assessing effective properties of the model structures. Metal as well as polyurethane foams show out interesting properties. They are light, have good acoustic and/or magnetic isolation, have ability to absorb energy of vibration and hits. They are used for sandwich panels, hit absorber s (i.e. as elements of buffer constructions in rail vehicles), fillers of construction parts, bodies of vehicles (i. e. floating combat vehicles), dividing walls on vessels and others. Specially prepared open cell foams show out auxetic properties and shape memory effect. Such materials are very good for seats in aircrafts which may protect pilots and passengers during crashes and restrict heavy backbone injuries. Foams are used for filtering purposes. Foams themselves or in combination with different types of fillers (i.e. elastomers) or ceramic reinforcement may be used for hit energy absorbing panels for military purposes (protection against explosion shock wave and splinters). Presented work is apart of a series of numerical experiments which aim is to investigate the influence of geometry parameters onto effective properties of the foam. Different types of geometries are used for numerical experiments. All the models of single foam cell are based on Kelvin grain geometry. Numerical compression tests performed with the use of models based on solid finite elements provide studying the process of the structure failure. Effective characteristics of investigated foams show out that such materials would be useful for energy absorbing purposes.

Źródło:

Journal of KONES; 2009, 16, 3; 409-414
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

Umiar i rozsądek jako cnoty efektywnego altruisty

Autorzy:

Synowiec, Jakub

Powiązania:

https://bibliotekanauki.pl/articles/426785.pdf

Data publikacji:

2017

Wydawca:

Uniwersytet Papieski Jana Pawła II w Krakowie

Tematy:

Effective Altruism
restraint
prudence
Efektywny Altruizm
umiar
rozsądek

Opis:

The aim of the paper is to analyze the importance of two virtues: prudence and restraint for genesis of the Effective Altruism and practice of life of effective altruists, on the basis of philosophical works of two main representatives of the idea and movement: Peter Singer and William MacAskill. In the first part of the paper genesis of the movement and it’s basic assumptions are presented. Than, the paper focuses on the role of prudence and restraint in both theoretical reflection on effective altruism and practice of life of people identifying themselves withe the movement, with reference to Aristotle’s understanding of the virtues. It is argued, that these virtues are crucial in the practice of life of an effective altruist. In the last part the paper focuses on the idea that Effective Altruism is in a sense an alternative to consumerism and can play a role in bringing mentioned virtues back into public life.
W artykule została podjęta próba zrekonstruowania znaczenia cnót umiarkowania i rozsądku dla powstania ruchu filozoficzno‑społecznego: Efektywnego Altruizmu i praktyki życia efektywnych altruistów w oparciu o publikacje jego kluczowych przedstawicieli: Petera Singera i Williama MacAskilla. W pierwszej części artykułu krótko referuję genezę i filozoficzne podstawy Efektywnego Altruizmu. Następnie staram się określić rolę rozsądku i umiarkowania w teoretycznych rozważaniach nad efektywnym altruizmem oraz w praktyce życia osób utożsamiających się z ruchem, w odniesieniu do rozumienia tych cnót zaprezentowanego przez Arystotelesa. Przedstawione rozumowanie wspiera tezę, że cnoty te mają kluczowe znaczenie dla praktyki codziennego życia efektywnych altruistów. Ostatnia część koncentruje się wokół spostrzeżenia, że Efektywny Altruizm może być w pewnym sensie alternatywą dla postawy konsumpcjonistycznej i przyczynić się do rehabilitacji tytułowych cnót w życiu publicznym.

Źródło:

Logos i Ethos; 2017, 45
0867-8308

Pojawia się w:

Logos i Ethos

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

Rozwój i główne nurty w badaniach efektywności szkoły
Development and the Main Directions in the Research into School Effectiveness

Autorzy:

Nowosad, Inetta

Powiązania:

https://bibliotekanauki.pl/articles/915833.pdf

Data publikacji:

2020-01-19

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

effective school
school development
school improvement
school quality

Opis:

This article isolates the main phases of the research into school effectiveness, at the same time emphasizing the specificityof attitudes, the dominant directions and the conclusions drawn in particular phases. The approach adopted emphasizes key achievements which have influencedthe direction of research and as such define the contemporary understanding of an effective school.

Źródło:

Studia Edukacyjne; 2017, 46; 125-152
1233-6688

Pojawia się w:

Studia Edukacyjne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

Examinations of effective efficiency of a car engine in non-stationary work conditions from torque load

Autorzy:

Ubysz, A.

Powiązania:

https://bibliotekanauki.pl/articles/245343.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

engine performance maps
specific fuel consumption
effective efficiency

Opis:

Measuring method and calculations of the impact of non-stationary work conditions of car engine torque load upon its effective efficiency have been presented in the paper. The obtained results have been compared to the already achieved results. The applied method of calculation balance and the consumed fuel enabled the writer of the paper to calculate the value of the change of unitary fuel consumption at a work point on engine performance map. The carried out examinations focus on measurements at one measuring length and so the rate of torque load at each of the four gear box ratio (2-5) can be controlled by constant final velocity of driving or by shifting or extending the measuring length against the lowest point ( the measuring length is 'U'-shaped). Finding the right solution to this problem will allow elaborating the calculation algorithm of engine effective efficiency for the examined range of engine performance maps for changeable, non-stationary work conditions. The results make it ąuite explicit that non-stationary work conditions from the engine speed and the engine load impair the effective efficiency of the engine at work in particular gears. Non-stationary mode of engine operation is essential for the higher values of gear box ratio whereas for lower values the engine load really matters.

Źródło:

Journal of KONES; 2009, 16, 4; 463-468
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Investigation of barrier height distributions over the gate area of Al-SiO2-Si structures

Autorzy:

Piskorski, K.
Przewłocki, H. M.

Powiązania:

https://bibliotekanauki.pl/articles/308661.pdf

Data publikacji:

2007

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

barrier height
effective contact potential difference
MOS system

Opis:

Distributions of the gate-dielectric EBG(x, y) and semiconductor-dielectric EBS(x, y) barrier height values have been determined using the photoelectric measurement method. Modified Powell-Berglund method was used to measure barrier height values. Modification of this method consisted in using a focused UV light beam of a small diameter d =0.3 mm. It was found that the EBG(x, y) distribution has a characteristic dome-like shape which corresponds with the independently determined shape of the effective contact potential difference fMS(x, y) distribution. On the other hand, the EBS(x, y) distribution is of a random character. It is shown that the EBG(x, y) distribution determines the shape of the fMS(x, y) distribution. The model of the EBG and EBS barrier height distributions over the gate area has been proposed.

Źródło:

Journal of Telecommunications and Information Technology; 2007, 3; 49-54
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Dependency Between the Total and Effective Imperviousness for Residential Quarters of the Lviv City

Autorzy:

Zhuk, Volodymyr
Vovk, Lesya
Matlai, Ivan
Popadiuk, Ihor
Mysak, Ihor
Fasuliak, Vadym

Powiązania:

https://bibliotekanauki.pl/articles/124213.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

total imperviousness
effective imperviousness
stormwater modelling
surface runoff

Opis:

A detailed hydrologic analysis was performed using geographic information systems and field investigations for thirty residential quarters in the Franko district of the Lviv city, Ukraine. All investigated quarters are located at the territory of the Baltic Sea catchment of the Lviv city, and the surface runoff from this area flows to the Lviv wastewater treatment plant. The total area of the investigated sub-catchment is 348.5 ha, including 58.46 % of impervious covers, 41.17 % of green spaces and 0.37 % of water bodies. The share of total impervious surfaces for each of the 30 analyzed quarters varies from 0.329 to 0.929, and the effective imperviousness – from 0.222 to 0.917. The correlation between the total and effective imperviousness was described by the power law dependency p_ef=(p_tot) ⁿ. Two approaches were used to describe the relationship between the total and the effective imperviousness: 1) using all 30 empirical results for each quarter; 2) using the average values of the imperviousness of the total subcatchment. The obtained values of the power law exponent for these two empirical approaches are n₁=1.308 and n₂=1.275, respectively or 7.2 % and 9.6 % less, respectively, comparing to the corresponding value n=1.41 in the Livingston’s & Veenhuis’ approximation, obtained for 14 different highly urbanized quarters of Denver city. On the other hand, the power law exponents are 3.9% and 1.3% higher, respectively, comparing to the corresponding value n=1.259 in the approximation for the 900 km² semi-urban watershed in Marion County, Georgia, USA.

Źródło:

Journal of Ecological Engineering; 2020, 21, 5; 56-62
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 41.

Tytuł:

Effect of selected microbiological products on soybean seed germination capacity

Autorzy:

Rymuza, K.
Radzka, E.
Cala, J.
Cala, P.
Bombik, A.

Powiązania:

https://bibliotekanauki.pl/articles/2083633.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Tematy:

effective microorganisms
soybean cultivars
logistic function
germination rate

Opis:

Germination of three soybean cultivars: Abelina, SG Anser and Merlin was examined in a laboratory study as affected by products containing effective microorganisms: EM5, EM Farma and EM Mulit Grower. Germination in an aqueous environment was the control treatment. Analysis of germination capacity after 5 and 10 days from the beginning of the experiment (as indicated by International Seed Testing Association) was based on two-way analysis of variance. A logistic function was used to analyse the average number of germinating seeds over time (for each cultivar × product). Based on this function, the rate of germination and the time (day) when the greatest number of seeds germinated were determined. Regardless of the applied product, cv. Abelina had the best germination performance at the first and second date of counting as its germination capacity was 55 and 86%, respectively. An application of EM Farma contributed to a significant increase in seed germination capacity at both the dates compared with the control and the remaining products. No significant differences in the number of germinated seeds counted after 5 and 10 days following EM application were found for cv. Merlin only. The highest number of germinated seeds at the logistic curve inflection point was observed for all the cultivars treated with EM Farma, their germination rate ranging from over 7 to 19% per 24 hrs.

Źródło:

Acta Agrophysica; 2019, 26, 1; 5-13
1234-4125

Pojawia się w:

Acta Agrophysica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

Saturation in the principal (excited) channel of four-level medium as an effective two-level configuration

Autorzy:

Addasi, Jihad S.

Powiązania:

https://bibliotekanauki.pl/articles/1835796.pdf

Data publikacji:

2021

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

optical properties
saturation
four-level
effective two-level

Opis:

Saturation of complex molecules affects the nonlinear processes occurring in the medium. The medium can be described by two-, three-, and four-level configurations. The principal singlet-singlet and excited triplet-triplet channels of a four-level, N-type, configuration were used to study a nonlinear medium, which was excited by radiation with two frequencies. Under weak population of energy levels in the triplet-triplet channel (a small ratio of the total probability of spontaneous and irradiate transitions for both channels p23/p31), the principal (singlet-singlet) channel is similar to a two-level configuration. At the same time, the effective population of the energy levels in the triplet-triplet channel (the ratio p23/p31 is large and the radiation intensity in the principal channel is high) makes the excited (triplet-triplet) channel coincide with the two-level configuration. The saturation intensity of radiation in principal (excited) channel, as effective two-level configuration, and nonlinear processes in this channel can be controlled by external radiation acting on excited (principal) channel. Finally, the average excitation of molecules into the energy levels in the triplet-triplet channel (ratio p23/p31 ≈ 1) makes the four-level configuration similar to the three-level configuration with effective level as a result of combination between second singlet level S2 and first triplet level T1.

Źródło:

Optica Applicata; 2021, 51, 2; 235-244
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Assessment and analysis of the environmental impact of the thermo-shrinkable packaging process on the way the packaging machine is powered based on LCA

Autorzy:

Walichnowska, Patrycja
Idzikowski, Adam

Powiązania:

https://bibliotekanauki.pl/articles/27315562.pdf

Data publikacji:

2023

Wydawca:

STE GROUP

Tematy:

effective management
humanistic management
manager
technological support
technologies

Opis:

Increasing requirements in the field of monitoring the impact of machines contributes to the analysis of production processes in order to verify their environmental loads. The research carried out in this area is aimed at identifying the negative impact of the tested object to be able to introduce changes in the consumption of raw materials and energy while limiting the negative impact on the environment. The article will present the results of the life cycle assessment (LCA) of the process of mass, thermo-shrinkable packaging of beverage bags depending on the change in the way the packaging machine is powered. In addition, as part of the analysis, it was indicated which stage of the process has the biggest negative impact on the environment. LCA results are presented at the stage of endpoint characterization.

Źródło:

Management Systems in Production Engineering; 2023, 3 (31); 355--360
2299-0461

Pojawia się w:

Management Systems in Production Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

The development of technological support organizations as an indicator of management efficiency

Autorzy:

Balahurovska, Inna

Powiązania:

https://bibliotekanauki.pl/articles/27315573.pdf

Data publikacji:

2023

Wydawca:

STE GROUP

Tematy:

effective management
humanistic management
manager
technological support
technologies

Opis:

The article is devoted to analyzing the need for managers to spend money on developing technological support for organizations to achieve strategic goals. The impact of technologies in various sectors of organizations' activity on the effectiveness of organizational systems is considered. The work examines the activity of Ukrainian profitable and non-profit organizations on the influence of the level of technologicalization of organizational processes on increasing the level of profit and the social effect of activity. The study considered the statistical data of the State Statistics Service of Ukraine for 2018, 2019, and 2021 according to the indicators Number of enterprises that have access to the internet and the number of employed who have access to the internet and Number of employed who have access to the internet. The given statistical data were quantitatively processed (summarized and compared). With the help of theoretical research methods (deduction and analysis) of the obtained results, it was found that the organization's technological development helps to increase the organization's profitability and the non-profit organization's social effect. The practical value of the article lies in the visual representation of the dependence between the necessity of spending on the technological development of managers of profitable and non-profit organizations and the effectiveness of these organizations.

Źródło:

Management Systems in Production Engineering; 2023, 2 (31); 242--247
2299-0461

Pojawia się w:

Management Systems in Production Engineering

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 45.

Tytuł:

The law of effective stress for rocks in light of results of laboratory experiments
Prawo naprężeń efektywnych dla skał w świetle wyników badań laboratoryjnych

Autorzy:

Nowakowski, A.

Powiązania:

https://bibliotekanauki.pl/articles/219996.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

prawo naprężeń efektywnych
konwencjonalne naprężenie efektywne
równanie ciśnienia efektywnego
wartość ciśnienia efektywnego
teoria Biota
współczynnik Biota
test ściśliwości
test trójosiowego ściskania
effective stress law
conventional effective stress law
effective pressure equation
effective pressure value
Biot theory
Biot coefficient
compressibility test
triaxial compression test

Opis:

This paper presents the results of laboratory tests carried out in order to formulate effective stress law. The law was sought for two different cases: first - when rock was treated as a porous Biot medium (Biot, 1941; Nur & Byerlee, 1971) and second - when the law was formulated according to definition of Robin (1973) developed by Gustkiewicz (1990) and Nowakowski (2007). In the first case coefficents (4) and (5) of the Biot equation (3) were were determined on the basis of compressibility test, in the second one effective pressure equation (9) and effective pressure value (11) were found on the basis of results of so called individual triaxial compression test (see Kovari et al., 1983) according to the methodology given by Nowakowski (2007). On the basis of Biot coefficients set of values was found that volumetric strain of the pore space described by a coefficient (5) was not dependent on the type of pore fluid and the pore pressure of only, while in case of volumetric strain of total rock described by coefficient (4) both the structure and texture of rock were important. The individual triaxial compression test results showed that for tested rock an effective pressure equation was a linear function of pore pressure as (15). The so called Rebinder effect (Rehbinder & Lichtman, 1957) might cause, that the α coefficient in equation (15) could assume values greater than one. This happened particularly in the case when the porous fluid was non-inert carbon dioxide. In case of inert pore fluid like kerosene the test results suggested that the a coefficient in equation (15) decreased while the differential strength limit was increasing. This might be caused by, so called, dillatancy strengthening (see Zoback & Byerlee, 1975). Another considered important parameter of the equation (15) was the value of the effective press p'. The results showed that the value of this parameter was practically independend on the pore fluid type. This conclusion was contrary to previous research (see, for example, Gustkiewicz et al., 2003 and Gustkiewicz, 1990) so these results should be treated with caution. There are no doubts, however, over p' increasing simultaneously with increase in Rσ1-σ3. Basically, the differential strength limit of the specimen is greater the greater is confining pressure applied to it. Thus, higher Rσ1-σ3 values are accompanied by higher p'.
W artykule przedstawiono wyniki badań laboratoryjnych wykonanych w celu sformułowania prawa naprężeń efektywnych, które prowadzono dla dwóch różnych sposobów formułowania tego prawa. W pierwszym przypadku zakładano, że skała jest ośrodkiem porowatym Biota (Biot, 1941; Nur i Byerlee, 1971), a samo prawo naprężeń efektywnych ma postać (3). W drugim przypadku posługiwano się podejściem zaproponowanym przez Robina (1973), które zostało następnie rozwinięte w Pracowni Odkształceń Skał IMG PAN m.in. przez Gustkiewicza (1990) i Nowakowskiego (2007) i wyznaczano prawo naprężeń efektywnych składające się z dwóch elementów: równania ciśnienia efektywnego (9) oraz wartości ciśnienia efektywnego (11). Podstawą wyznaczania współczynników dla równania Biota (3) były testy ściśliwości próbek skał pozostających w stanie powietrznie suchym oraz nasyconych inertnymi (azot, nafta) bądź sorbującymi (dwutlenek węgla, woda destylowana) płynami porowymi. Na podstawie wyników tych testów wyznaczano moduły ściśliwości badanych skał a następnie wyliczano wartości współczynników Biota wg (4) i (5). Przedmiotem badań były próbki z naprężeń dwóch skał oznaczonych jako piaskowiec 8348 i wapień 9166. Równanie ciśnienie efektywnego (9) oraz wartość ciśnienia efektywnego (11) wyznaczano wg metodyki podanej przez Nowakowskiego (2007) na podstawie wyników testu klasycznego trójosiowego ściskania (ang. „individual test” - por. Kovari i in., 1983) uzyskanych dla próbek skał, w których naprężenie różnicowe osiągnęło wartość różnicowej granicy wytrzymałości Rσ1-σ3. Przedmiotem badań były próbki wycięte ze skały oznaczonej jako piaskowiec „Tumlin”, a jako płynów porowych użyto azotu i nafty (płyny inertne) oraz dwutlenku węgla i wody destylowanej (płyny sorbujące). Z przedstawionych wyników badań nad wartościami współczynników Biota wynika, że rodzaj płynu porowego nie wpływa na wartość wyznaczanego według wzoru (5) współczynnika α2 co oznacza, że deformacja objętościowa tej przestrzeni nie zależy od rodzaju płynu porowego, a jedynie od panującego w niej ciśnienia. W przypadku współczynnika α1 (wzór (4)) określającego wpływ ciśnienia porowego na deformację ośrodka jako całości wyniki wykazują pewną sprzeczność. Wartości α1 uzyskane dla piaskowca gdy płynem porowym jest nieściśliwa ciecz są nieco większe niż gdy jest nim ściśliwy gaz. Z kolei wyniki uzyskane dla opoki wskazują na coś wręcz przeciwnego: stosunkowo duża (większa niż dla piaskowca) wartość α1 dla gazu i wyraźnie mniejsze wartości α1 dla cieczy. Ostatecznie wydaje się, że to, czy wartość współczynnika α1 zależy rodzaju medium porowego jest w dużym stopniu uwarunkowane strukturą i teksturą badanej skały. Dla skał okruchowych o dużej porowatości i dużej swobodzie filtracji płynu porowego rodzaj tego płynu będzie miał prawdopodobnie mniejsze znaczenie natomiast dla skał zwartych o małej porowatości mogą zachodzić duże różnice w wartościach tego współczynnika w zależności od tego czy medium porowym jest ciecz, czy gaz. Wyniki wykonanych testów konwencjonalnego trójosiowego ściskania pozwoliły stwierdzić, że dla badanego piaskowca równanie ciśnienia efektywnego na granicy wytrzymałości jest liniową funkcją ciśnienia porowego pp postaci (15). Zgodnie z tym co pokazali Gustkiewicz i in. (2004) oraz Nowakowski (2005, 2007) jeżeli oddziaływanie płynu porowego na skałę nie jest wyłącznie mechaniczne, to może dojść do sytuacji, w której współczynnik α w równaniu (15) ma wartość większą od 1. Zjawiskiem fizykochemicznym odpowiedzialnym za taką sytuację jest najprawdopodobniej tzw. efekt Rebindera (Rehbinder i Lichtman, 1957), który polega na obniżeniu wytrzymałości skały wskutek adsorpcji gazu porowego, przy czym spadek wytrzymałości jest tym większy, im wyższa jest ilość zasorbowanego gazu (por. także Hołda, 1990). Jeżeli płynem porowym jest CO2 to im wyższa wartość Rσ1-σ3 tym wyższa wartość α, czyli tym silniej manifestuje się wpływ ciśnienia porowego (rys. 6). Przyczyn takiego zjawiska należy prawdopodobnie upatrywać w sposobie pękania badanego materiału. Jak wiadomo różnicowa granica wytrzymałości rośnie ze wzrostem ciśnienia okólnego oraz ze wzrostem różnicy p - pp (Gustkiewicz, 1990). Wzrostowi temu towarzyszy stopniowa zmiana sposobu pękania skały od kruchego pękania do ciągliwego płynięcia. W próbce pękającej krucho wytwarza się zazwyczaj jedna płaszczyzna pęknięcia, wzdłuż której następuje zniszczenie próbki. Natomiast w próbce pękającej w sposób ciągliwy powstaje wiele równoległych do siebie płaszczyzn zniszczenia. Oznacza to, że sumaryczna powierzchnia nowych spękań powstających podczas zniszczenia ciągliwego jest prawdopodobnie znacznie większa niż podczas kruchego pęknięcia. Jeśli w trakcie eksperymentu spełnione są warunki (6) to pęknięcia te zostają wypełnione pozostającym pod stałym ciśnieniem gazem porowym, a to z kolei oznacza wzrost powierzchni fizykochemicznie czynnej, na której mogą zachodzić procesy sorpcyjne. A zatem i wpływ efektów sorpcyjnych powinien się okazać dla wyższych wartości Rσ1-σ3 znacząco większy. W przypadku, gdy płynem porowym była inertna ciecz (nafta) pokazane na rys. 6 wyniki badań sugerują, że wartość współczynnika α maleje ze wzrostem Rσ1-σ3. Przyczyną może tu być tzw. Wzmocnienie dylatancyjne (por. Zoback i Byerlee, 1975). W tym przypadku polega ono na tym, że gdy próbka skalna osiąga swoja granicę wytrzymałości zaczynają się w niej rozwijać nowe spękania, czego konsekwencją jest wzrost objętości przestrzeni porowej wywołujący spadek ciśnienia porowego. Jeżeli spadek ten nie zostanie wyrównany przez filtrującą z zewnątrz ciecz to rzeczywista wartość ciśnienia porowego będzie niższa niż zakładana. Z punktu widzenia prawa ciśnienia efektywnego oznacza to, że wpływ ciśnienia porowego na wartość Rσ1-σ3. ulegnie zmniejszeniu, co powinno dać α < 1. Drugim istotnym parametrem równania (15) jest tzw. wartość ciśnienia efektywnego p'. W rozważanych eksperymentach wielkość tę należy traktować jako pewne zastępcze ciśnienie okólne, które - zastosowane do skały dla pp = 0 - da w efekcie taka samą wartość Rσ1-σ3 jak para niezerowych ciśnień p i pp spełniających równanie (15). Pokazane na rys. 7 zależności sugerują, że wartość wielkości p' praktycznie nie zależy od rodzaju płynu porowego. Innymi słowy: jeśli pp = 0 to Rσ1-σ3 = const. dla danej wartości p' niezależnie od tego, czym wypełniona jest przestrzeń porowa skały. Wartości p' rosną natomiast ze wzrostem Rσ1-σ3 gdyż różnicowa granica wytrzymałości próbki jest tym wyższa im wyższe jest obciążające próbkę ciśnienie okólne. Jest zatem naturalne, że wyższym wartościom Rσ1-σ3 towarzyszą wyższe wartości p'.

Źródło:

Archives of Mining Sciences; 2012, 57, 4; 1027-1044
0860-7001

Pojawia się w:

Archives of Mining Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 46.

Tytuł:

Intencje edukacyjne pragmatycznych znaczeń w Sztuce doczesnej mądrości Baltasara Graciána
Educational Intentions of Pragmatic Meanings in Baltasar Gracián’s Wordly Wisdom

Autorzy:

Wojnowski, Kazimierz

Powiązania:

https://bibliotekanauki.pl/articles/29519646.pdf

Data publikacji:

2023

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

wisdom
education
practical knowledge
pragmatic values
effective action

Opis:

Baltasar Gracián’s views revolved around the motivation of moral axiology in reference to the cognitive knowledge of reason and the practical knowledge of reason, by which individuals achieve effective results. He believed that knowledge of motivation, strategies and tactics for successful goal achievement should be imparted in education, while wisdom is expressed by effective long-term and permanent results of reasonable actions. Behavioral strategies motivated by moral axiology result in increased human spiritual and material well-being in society, and education in this area contributes to knowledge spread and moral progress. Temporal wisdom is both life wisdom and worldly wisdom; the former belongs to the human nature of life and is a driving force behind the creation of a better human world.

Źródło:

Biuletyn Historii Wychowania; 2021, 44; 7-23
1233-2224

Pojawia się w:

Biuletyn Historii Wychowania

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

Radon exposure in kindergartens in one Bulgarian district

Autorzy:

Angelova, Antoaneta
Chobanova, Nina
Kunovska, Bistra
Djunakova, Desislava
Ivanova, Kremena
Stojanovska, Zdenka

Powiązania:

https://bibliotekanauki.pl/articles/24202747.pdf

Data publikacji:

2023

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

Bulgaria
effective dose
kindergarten
passive detector
radon concentration

Opis:

The major part of the radiation dose that humans receive from natural radioactive sources is due to inhalation of radon and its decay products. The study focuses on radon concentration (CRn) investigation in kindergartens and nurseries in the district of Montana. The infl uence of building characteristics on CRn was evaluated. The measurement of the CRn was performed using passive detectors. The survey was carried out between December 2019 and May 2020 with a total number of 602 detectors. The average value of CRn in the premises of the studied kindergartens and nurseries in this district is 125 Bq·m−3 , and the geometric mean (GM) value is 88 Bq·m−3 . The buildings that have built ventilation and sewerage systems have lower CRn. The effective doses of the children and workers were evaluated in order to assess the radon exposure.

Źródło:

Nukleonika; 2023, 68, 2; 51--56
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

Dressing of zero-range potentials into realistic molecular potentials of finite range

Autorzy:

Leble, S.
Ponomarev, D.

Powiązania:

https://bibliotekanauki.pl/articles/1943185.pdf

Data publikacji:

2010

Wydawca:

Politechnika Gdańska

Tematy:

effective potentials
zero-range potentials
Darboux transformation
dressingmethod

Opis:

The zero-range potentials of the radial Schrodinger equation and their dressing are investigated. A sequence of Darboux transformations involving a set of parameters yields solvable potentials of a finite-range with physically meaningful properties. In particular, the newly obtained potential is matched to that resulting from the ab initio computation methods in terms of discrete and continuous spectrum parameters. The approach, being a companion to conventional quantum simulation methods, combines symbolical and numerical calculations and is expected to work best for molecules with high spherical symmetry, typically fullerenes.

Źródło:

TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2010, 14, 1-2; 29-34
1428-6394

Pojawia się w:

TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 49.

Tytuł:

Teaching English to Adults

Autorzy:

Michalska, Martyna

Powiązania:

https://bibliotekanauki.pl/articles/1194004.pdf

Data publikacji:

2015

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

learning process more effective
students
teaching English language

Opis:

This thesis deals with a complicated matter of teaching English language to adults. Teaching is highly challenging, intellectually demanding and emotionally rewarding. A teacher has in his hands welfare of his students and it is his responsibility to instill knowledge into them. Adult learners have characteristics that distinguish them from “traditional” school or college learners. They are considered to be very demanding students because they already have experiences on the education al and working field so the organized learning plan seems to be essential for them. Teachers choose suitable methods of teaching with deliberation taking into account adults' styles of learning because the right choice makes the teaching and learning process more effective.

Źródło:

World Scientific News; 2015, 8; 82-96
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 50.

Tytuł:

Design and Implementation of Cost-effective Simple FIR Filter for EEG Signal on FPGA

Autorzy:

Mahabub, Atik

Powiązania:

https://bibliotekanauki.pl/articles/1075612.pdf

Data publikacji:

2019

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Cost-effective
EEG
FIR
FPGA
Floor Plan
RTL

Opis:

Filter is immensely used to distinguish distinctive human signal progressively. In this article, a digital finite impulse response (FIR) filter is presented for the quick detection of electroencephalogram (EEG) signal to smooth and compress the signal. This paper means to structure an advanced FIR filter based on Field Programmable Gate Array (FPGA) to get faster biomedical signals specially EEG signals. For this respect, a simple and cost-effective FIR filter is introduced to make EEG signal noise free, less costly, less power consuming and simple. It requires less space for chip implementation than other digital filter and avoid the mixture of other biomedical signal. For hardware execution, FPGA board is utilized which is a mix of various logic gates and registers which offers cheap and dependable administrations.

Źródło:

World Scientific News; 2019, 125; 1-17
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 51.

Tytuł:

Comparison of the barrier height measurements by the Powell method with the phi MS measurement results

Autorzy:

Piskorski, K.
Kudła, A.
Rzodkiewicz, W.
Przewłocki, H. M.

Powiązania:

https://bibliotekanauki.pl/articles/308846.pdf

Data publikacji:

2005

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

barrier height
effective contact potential difference
MOS system

Opis:

In this work, we have compared the barrier height measurements carried out using the Powell method with the photoelectric effective contact potential difference (phi MS) measurement results. The photoelectric measurements were performed on the samples that were previously applied in the investigation of the influence of stress on the duration of annealing in nitrogen. This paper shows that the results of barrier height measurement using the Powell method differ significantly from the phi MS measurement results.

Źródło:

Journal of Telecommunications and Information Technology; 2005, 1; 120-123
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 52.

Tytuł:

Evaluating the HYPE model for estimating groundwater recharge in a groundwater dominated catchment in Poland

Autorzy:

Bar-Michalczyk, D.
Michalczyk, T.
Witczak, S.
Żurek, A.

Powiązania:

https://bibliotekanauki.pl/articles/184577.pdf

Data publikacji:

2017

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

groundwater recharge
effective infiltration rate
HYPE
catchment scale

Opis:

Hydrological models can be useful tools simulating climate and land use changes and their impact on nutrients outflows from a catchment area. One of them is the HYPE (Hydrological Predictions for the Environment) water quality model applicable to different spatial scales. Groundwater recharge via infiltrating precipitation is a significant water budget component. The rate of groundwater recharge in the HYPE model is estimated from the water balance in soils. The Kocinka river catchment is one of the test areas in the BONUS-Soils2Sea project where HYPE model modelling was carried out. A hydrograph, among others, is one of the modelling results and, based on it, the recharge rate of groundwater was determined. This value was compared with groundwater recharge rates estimated by the infiltration method used for the Groundwater Vulnerability Map of Poland.

Źródło:

Geology, Geophysics and Environment; 2017, 43, 3; 171-180
2299-8004
2353-0790

Pojawia się w:

Geology, Geophysics and Environment

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 53.

Tytuł:

Examination and assessment of special purpose vehicle crews’ comfort while operating in off-road conditions

Autorzy:

Luty, W.
Kupicz, W.
Zwierzyński, M.

Powiązania:

https://bibliotekanauki.pl/articles/347322.pdf

Data publikacji:

2017

Wydawca:

Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki

Tematy:

driving comfort
effective vibration acceleration
special purpose vehicles

Opis:

In the era of the rapid development of motorization one of the most important characteristics of transport vehicles is the safety and comfort of their drivers and passengers. In particular, people driving vehicles professionally are exposed to vibrations, which may adversely affect their bodies, causing discomfort, dysfunctions, and even lesions of disease. The vibration level triggered by the system a road – a vehicle depends on the type and profile of the road surface as well as the driving speed. Vibration levels are assessed by means of characteristics and comfort comparative indexes determined by experimental methods. Attempts at assessing the comfort while driving along paved roads may be found in many publications; however, there is a lack of information on testing vehicles moving in off-road conditions, which is substantial from the point of view of military vehicle crews’ comfort. The driving comfort of crews of wheeled vehicles is subjected to examinations at the Military Institute of Armored and Automotive Technology.

Źródło:

Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki; 2017, 3; 132-147
1731-8157

Pojawia się w:

Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 54.

Tytuł:

Radon events in the U-mine environment and related radiation exposure

Autorzy:

Križman, M. J.
Rojc, J.
Peter, J. E.

Powiązania:

https://bibliotekanauki.pl/articles/148916.pdf

Data publikacji:

2010

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

radon
uranium mine
environment
radon event
effective dose

Opis:

The term �gradon event�h indicates here a sudden appearance of enhanced radon concentrations, observed like well expressed peaks in time series of radon concentrations. The peaks are superimposed on normal diurnal periodical curves. The characteristics of radon events are high peak values, a rather short duration and a low radon equilibrium factor. Since radon events appear only in the environment near significant radon emission sources, they were investigated in more detail in the case of the former .irovski Vrh uranium mine (Slovenia), using the existing network of continuous radon progeny measuring devices. Eight different types of radon events were identified in the vicinity of the U-mine disposal sites, lasting for some hours and with the range of their peak levels of equilibrium equivalent concentrations (EEC) of radon from a few Bq�Em.3 to over 200 Bq�Em.3. Exposures to radon events in units of Bq�Eh�Em.3 were estimated for adult individuals of the reference group. They resulted in relatively high effective doses of the range 1.5 �ĘSv per a single event, thus exceeding, e.g. the total effective dose for the public due to radioactive discharges from most nuclear facilities during the whole year.

Źródło:

Nukleonika; 2010, 55, 4; 529-533
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 55.

Tytuł:

Numerical analysis of an open cell foam structure with the use of models based on 2D finite elements

Autorzy:

Szymczyk, W.
Miedzińska, D.

Powiązania:

https://bibliotekanauki.pl/articles/242137.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

FEM modelling
open cell foam structure
effective properties

Opis:

The paper deals with the numerical analysis of foam materials. Open cell foam is investigated. Numerical simulations allow calculating modes of destruction and assessing effective properties of the model structures. Metal as well as polyurethane foams show out interesting properties. They are light, have good acoustic and/or magnetic isolation, have ability to absorb energy of vibration and hits. They are used for sandwich panels, hit absorber s (i.e. as elements of buffer constructions in rail vehicles),fillers of construction parts, bodies of vehicles (i.e. floating combat vehicles), dividing walls on vessels and others. Specially prepared open cell foams show out auxetic properties and shape memory effect. Such materials are very good for seats in aircrafts which may protect pilots and passengers during crashes and restrict heavy backbone injuries. Foams are used for filtering purposes. Foams themselves or in combination with different types of fillers (i.e. elastomers) or ceramic reinforcement may be used for hit energy absorbing panels for military purposes (protection against explosion shock wave and splinters). Presented work is a part of a series of numerical experiments which aim is to investigate the influence of geometry parameters onto effective properties of the foam. Different types of geometries are used for numerical experiments. All the models of single foam cell are based on Kelvin grain geometry. Numerical compression tests performed with the use of models based on 2D finite elements provide studying the process of the structure failure. Effective characteristics of investigated foams show out that such materials would be useful for energy absorbing purposes.

Źródło:

Journal of KONES; 2009, 16, 2; 441-448
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 56.

Tytuł:

Comparison of Effective Coverage Calculation Methods for Image Quality Assessment Databases

Autorzy:

Buczkowski, M.
Stasiński, R.

Powiązania:

https://bibliotekanauki.pl/articles/225967.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Image Quality Assessment
IQA database analysis
effective coverage

Opis:

This article provides a comparison of a three methods that can be used for calculating effective coverage of image quality assessment database. The aim of this metric is to show how well the database is filled with variety of images. For each image in the database the Spatial Information (SI) and Colorfulness (CF) metric is calculated. The area of convex hull containing all the points on SI x CF plane is indication of total coverage of the database, but it does not show how efficiently this area is utilized. For this purpose an effective coverage was introduced. An analysis is performed for 16 databases - 13 publicaly available and 3 artificial created for the purpose of showing advantages of the effective coverage.

Źródło:

International Journal of Electronics and Telecommunications; 2018, 64, 3; 307-313
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 57.

Tytuł:

Modelowanie geostatystyczne w wyznaczaniu przestrzennego rozkładu parametrów petrofizycznych utworów ilasto-mułowcowych
Geostatistics modeling in determining the spatial distribution of petrophysical parameters of claystone and mudstone formations

Autorzy:

Kwilosz, Tadeusz

Powiązania:

https://bibliotekanauki.pl/articles/1834377.pdf

Data publikacji:

2020

Wydawca:

Instytut Nafty i Gazu - Państwowy Instytut Badawczy

Tematy:

kriging
kroswalidacja
porowatość efektywna
cross-validation
effective porosity

Opis:

Due to decreasing gas reserves in deposits found in sandstone f and carbonate formations, geological structures composed of mudstone and shale layers found in Miocene formations are growing in popularity. These deposits are characterized by high facial variability. Shale rocks have very low permeability. Therefore, the porosity determined for these rocks cannot be taken into account in the balance of the effective porosity used to estimate the natural gas reserves. Shale rock thickness should be excluded when calculating effective thickness of the gas bearing formations. The main problem of this study is the proper separation of the rocks belonging to individual lithological facies. Gamma ray logs were used to identify lithological variability of this type of rock. It should be emphasized, however, that due to the very low thickness of sandstones and mudstones, it was not possible to identify them clearly using the archival gamma ray logs. The archival gamma ray logs indicate the average values of the layer rather than that of specific laminas, because of its measurement resolution. Therefore, an estimation was made in order to calculate the percentage share of the thickness of each lithological type in the total layer thickness in each well. This division was made using the analysis of empirical distributions of gamma ray logs. It was assumed that lithological heterogeneities would be visible on experimental histograms in the form of multimodal distributions or clear changes in monotonicity. These data were used to generate a spatial distribution of parameters on the model grid at points not covered by the measurement. For this purpose, the ordinary kriging method and the kriging with trend method were used. Using the same interpolation methods, the structure maps of the top and bottom of the model were generated. The results of the porosity measurements were assigned to the previously separated lithological types of rocks. The distribution of porosity at the grid points of the deposit model was determined for each type of rock and using both kriging methods. The cross-validation method was used to assess the uncertainty of the results. Finally, the effective pore volume of the deposit model was calculated, assuming that only sandstone and mudstone rocks are sources of the effective pores. The uncertainty of the analysis was estimated. Real data from geophysical measurements for the Miocene gas field were used for the study.

Źródło:

Nafta-Gaz; 2020, 76, 4; 230-238
0867-8871

Pojawia się w:

Nafta-Gaz

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 58.

Tytuł:

Twórcza przedsiębiorczość i zarządzanie. Wyniki nowych badań psychologicznych
Creative Entrepreneurship and Management: Results of the New Research

Autorzy:

Strzałecki, Andrzej

Powiązania:

https://bibliotekanauki.pl/articles/469150.pdf

Data publikacji:

2007

Wydawca:

Polska Akademia Nauk. Instytut Filozofii i Socjologii PAN

Tematy:

creative entrepreneurship
effective management
style of creative behaviour

Opis:

The basic assumption of the article is that entrepreneurship could be best explained on the ground of psychological theories dealing with creativity. Therefore, the author’s model of „The Style of Creative Behavior” measured by „The Creative Behavior Questionnaire” (CBQ) was used as the main theoretical framework in three studies presented. Other models were also used: „The Formal Characteristic of Behavior – Temperament Inventory” by J. Strelau, „Match Problems II” (Adaptive Flexibility of Thinking) by J. P. Guilford, as well as D. C. McClelland’s model of the need of achievement, measured by „Widerszal-Bazyl Questionnaire of Motivation”. The four factors, out of five, from the CBQ: The Strength of ego, Self-realization, Flexibility of cognitive system, and Internal locus of evaluation proved to be the most efficient in discriminating entrepreneurs and effective managers from control groups – unemployed people, and group of administrative workers. This corroborates the results obtained in previous author’s research.

Źródło:

Prakseologia; 2007, 147; 163-188
0079-4872

Pojawia się w:

Prakseologia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 59.

Tytuł:

Tightening tax policy and changes to tax efficiency on the example of companies listed on the Warsaw Stock Exchange

Autorzy:

Kowalski, Michał J.
Nesterak, Janusz

Powiązania:

https://bibliotekanauki.pl/articles/24201273.pdf

Data publikacji:

2022

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

tax management
tax efficiency
tax policy
tightening tax policy
effective tax rate
ETR
current effective tax rate
CERT
Warsaw Stock Exchange

Opis:

The article presents an analysis of changes in the tax efficiency of companies listed on the Warsaw Stock Exchange. After 2017, some changes to the tax law aimed at tightening the regulations on an unprecedented scale were introduced. The research conducted showed that since 2018 there has been a decrease in tax efficiency measured with effective tax rate (ETR) and current effective tax rate (CETR). On average, in 2018–2019, the efficiency measured with CETR dropped by 17.7%, the median by 14.8% compared to the previous years. In 2018 and 2019, the value of the CETR was the highest in the entire analyzed period, i.e. from 2012 to 2019. At the same time, the propensity of companies to create deferred tax assets is declining, and the effective tax rate is also growing. The changes mainly concern companies with average tax efficiency, large entities forming capital groups, and companies implementing capital investments. The article presents a discussion on the observed trends and formulates directions for further research.

Źródło:

Managerial Economics; 2022, 23, 2; 153--170
1898-1143

Pojawia się w:

Managerial Economics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 60.

Tytuł:

Effect of phospholipid and (phospho)lipase modification on interfacial properties of oil/water emulsion

Autorzy:

Wiącek, Agnieszka Ewa

Powiązania:

https://bibliotekanauki.pl/articles/763941.pdf

Data publikacji:

2015

Wydawca:

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

Tematy:

dynamic light scattering
phospholipid
phospholipase
zeta potential
effective diameter

Opis:

This review paper focused on the effect of typical phosphorlipid (or lecithin) and enzyme modification on electrokinetic parameters of oil/water emulsion. Physicochemical properties of the systems were investigated taking into account the effective diameter of the droplets as well as the zeta potentials using the dynamic light scattering technique. The effect of phospholipid and phospholipase modification on interfacial properties of o/w emulsion was examined as a function of temperature, pH and ionic strength (effect of Na+ or Ca2+ ions which occur in the physiological fluids). The particular role of Ca2+ ions in the dispersions with zwitterionic phospholipids (the main components of biological membrane) was confirmed.The phospholipids dipalmitoylphosphatidylcholine, DPPC or dioleoylphosphatidylcholine, DOPC having the same headgroup bound to the apolar tail composed of two saturated or unsaturated chains were used as stabilizing agents. The effective diameters do not always correlate with the zeta potentials. A possible reason for such behaviour might a mechanism different from the electrostatic stabilization. Phospholipids and their mixtures (e.g. lecithin) may undergo spontaneous aggregation in aqueous solution and selforganize into liposomes, which possess different sizes and surface affinities. These unique behaviours of phospholipid dispersion can be controlled using the investigated parameters. These findings are expected to increase in importance as phospholipid systems see more use in self-assembly applications.The other aim of the paper was the comparison of the enzyme phospholipase influence on lipid hydrolysis in the o/w emulsion environment. The work is the study which presents the twofold effect of ethanol dipoles on phosholipid hydrolysis. It is believed that the enzyme effect on the phospholipid aggregation behaviour at the oil-water interface will be helpful for understanding differentbiological phenomena.

Źródło:

Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia; 2015, 70, 1
2083-358X

Pojawia się w:

Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 61.

Tytuł:

224Ra and the 224Ra/228Ra activity ratio in selected mineral waters from the Polish Carpathians

Autorzy:

Nguyen, C. D.
Rajchel, L.
Van-Duong, H.
Nowak, J.

Powiązania:

https://bibliotekanauki.pl/articles/2060569.pdf

Data publikacji:

2017

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Ra-224
radium
mineral waters
effective dose
LSC method

Opis:

Mineral and therapeutic waters widely occurring in the Polish Carpathians contain a vast amount of biogenic elements. However, radioactive elements like radium isotopes are also found in these waters. This paper presents the first results of the activity concentration measurements of 224Ra in selected mineral waters of the Polish Carpathians. Additionally, the content of 226Ra and 228Ra, and the activity ratios of 224Ra/228Ra, 224Ra/226Ra and 226Ra/228Ra in the waters were determined. The work was based on a method for the simultaneous determination of 224Ra, 226Ra and 228Ra in water samples using the a/b liquid scintillation spectrometer. The results show that the activity concentrations of 224Ra, 226Ra and 228Ra in the mineral waters are comparable and vary from ca. 220 mBq/L to above 1500 mBq/L. The activity ratios of 224Ra/228Ra, 224Ra/226Ra and 226Ra/228Ra are variable within the ranges of 0.68 to 1.48, 0.65 to 1.48, and 0.78 to 2.05, respectively. The committed effective dose resulting from the intake of 224Ra through the water consumption is far lower than that from 226Ra and 228Ra.

Źródło:

Geological Quarterly; 2017, 61, 4; 771--778
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 62.

Tytuł:

An experimental study on drying characteristics and kinetics of figs (Ficus carica)

Autorzy:

Sarvestani, F. Sabet
Rahimi, A.
Hatamipour, M. S.

Powiązania:

https://bibliotekanauki.pl/articles/779372.pdf

Data publikacji:

2014

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

drying kinetics
figs
effective diffusivity
equilibrium moisture content
drying

Opis:

In this study, the thin-layer drying characteristics of Figs (Ficus carica) are investigated in a pilot scale forced convective dryer. Experiments carried out under various operating conditions including air temperature (40, 50, 60, 70°C), air velocity (0.65, 2.1, 3.45, 4.85 m/s) and air humidity (0.005, 0.010, 0.015 kg/kg) and the effects of these operating conditions on the drying kinetics and the drying time determined. The obtained kinetics data are fitted into a conceptually developed model. The equilibrium moisture content of the dried figs is determined at different values of temperature and relative humidity of air. The values of effective moisture diffusivity (D_eff) are obtained from the Fick’s second law and a temperature-dependent relation is proposed for this parameter.

Źródło:

Polish Journal of Chemical Technology; 2014, 16, 4; 60-65
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 63.

Tytuł:

Stress and strain distribution in expanded coronary stents depending on applied material

Autorzy:

Idziak-Jabłońska, A.

Powiązania:

https://bibliotekanauki.pl/articles/122338.pdf

Data publikacji:

2015

Wydawca:

Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej

Tematy:

slotted-tube stent
ADINA software
effective stress
plastic strain

Opis:

The aim of the study is to present mechanical characteristics of coronary stents. More specifically, stress and plastic strain present in a stent were determined depending on the pressure applied to the internal surface of the stent. The study analyses a model of a slotted-tube stent using the finite element method. The stents with two different numbers of segments and with three wall thicknesses were dealt with. The analysis was carried out for the three most popular biomaterials: austenitic steel Cr-Ni-Mo, cobalt-matrix alloy Co-Cr-W-Ni and titanium-matrix alloy Ti-6Al-7Nb. Numerical analysis presented in the study provides a basis for further research and optimization of stent design. The calculations obtained in the study show that the lowest values of maximum reduced stress occur in the stent made of Cr-Ni-Mo. Furthermore, the stent made of Ti-6Al-7Nb exhibited the lowest values of plastic strain.

Źródło:

Journal of Applied Mathematics and Computational Mechanics; 2015, 14, 2; 21-30
2299-9965

Pojawia się w:

Journal of Applied Mathematics and Computational Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 64.

Tytuł:

How to Train a Nobel Prize Winner. About the Social Perception of Tutoring in a Group of Students and Tutors at the University of Wrocław; A Pilot Study
Jak wytrenować noblistę. Rzecz o społecznym odbiorze tutoringu w grupie studentów i tutorów Uniwersytetu Wrocławskiego; badanie pilotażowe

Autorzy:

Chruszczewski, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/2013173.pdf

Data publikacji:

2021

Wydawca:

Komisja Nauk Filologicznych Polskiej Akademii Nauk, Oddział we Wrocławiu

Tematy:

teaching methods
tutoring
effective teaching
Nobel Prize winner training

Opis:

It is one of the oldest and most effective methods of working with a student – a method which builds upon the growing relationship between the teacher and the student, often called the master‒student method or simply tutoring – and yet, it is still not common in Polish universities.One may say that from the view of the general public this method is considered elitist, because for various reasons it has been understood that only a small group of selected students can be taught this way, and only a few can use this method. Hence, in order to make certain how it is actually understood, a survey was prepared and presented to two groups of people: a group of students and graduates of the College of Interdisciplinary Studies, University of Wrocław, and a group of 125 employees of the University of Wrocław who worked as tutors in the past. It remains to be hoped that tutoring will be introduced into the education system in Poland not only in higher education – as has already begun to happen – but also on a larger scale in secondary and primary education. Regardless of how tutoring is actually perceived fortunately it is becoming an increasingly popular teaching method in Poland.

Źródło:

Academic Journal of Modern Philology; 2021, 14; 69-90
2299-7164
2353-3218

Pojawia się w:

Academic Journal of Modern Philology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 65.

Tytuł:

The techniques of effective use of recreational areas of the university complexes

Autorzy:

Levchenko, D. R.

Powiązania:

https://bibliotekanauki.pl/articles/370002.pdf

Data publikacji:

2017

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

higher educational establishments
recreational areas
effective usage
urban structure

Opis:

An investigation of scientific works to concern the town-planning structure of higher education establishments and their connection with an urban structure was provided. It was reviewed architectural and planning methods of improving the economic indicators of Universities. The analysis of practical experiences of the current higher educational establishments at Ukraine was made. The main principles of effective use of recreational areas of the Universities were produced. The methods and techniques were implemented in the projects of the amenities and landscaping of plots of the O. M. Beketov National University of Urban Economy in Kharkiv and the Volodymyr Dahl East National University.

Źródło:

Przestrzeń i Forma; 2017, 32; 153-164
1895-3247
2391-7725

Pojawia się w:

Przestrzeń i Forma

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 66.

Tytuł:

Effect of particle properties on rheology of low-concentration coal suspensions

Autorzy:

Hou, Jinying
Ma, Xiaomin
Fan, Yuping
Dong, Xianshu
Yao, Suling

Powiązania:

https://bibliotekanauki.pl/articles/1845222.pdf

Data publikacji:

2020

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

apparent viscosity
coal suspension
particle property
hydrophobicity
effective volume

Opis:

In wet coal preparation, the products of some processes are transported as low-concentration suspensions. Their rheology is greatly affected by the properties of the coal particles that result from the formation and weathering during preparation. In this study, the properties of coal particles, including volumetric properties (i.e., solids content, granularity, and clay mineral fraction) and surface characteristics (i.e., dynamic potential, degree of coalification, and degree of surface oxidization), were studied to determine their effects on the apparent viscosity of low-concentration coal suspensions. With increasing solids content and smaller particle size in the suspension, the interactions between the coal particles became stronger due to the increased particle content, thus increasing the coal suspension’s apparent viscosity. Adding clay minerals to the suspension gradually changed its composition and structure and increased its viscosity. The dynamic potential of the coal particles and inter-particle electrostatic repulsive forces were reduced with the addition of Ca2+ ions, and the coal particles collided and aggregated, which increased the apparent viscosity of the suspension. For coal with a low degree of coalification or coal had been oxidized by a hydrogen peroxide solution, the suspension of the hydrophilic coal particles was associated with a lower apparent viscosity than that of highly hydrophobic solids, which tended to aggregate and form flocculent masses.

Źródło:

Physicochemical Problems of Mineral Processing; 2020, 56, 5; 984-995
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 67.

Tytuł:

Propedeutyka wiedzy o mediacji w szkole. Kompetencje mediacyjne nauczyciela i ucznia
Propaedeutics of School Mediation Knowledge. Teachers’ and Students’ Mediation Skills

Autorzy:

Łacina-Łanowski, Artur

Powiązania:

https://bibliotekanauki.pl/articles/15830741.pdf

Data publikacji:

2021-10-15

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

effective communication
dialog
encouraging listening
mediation competencies
facilitative mediation

Opis:

The changes attendant to the social and political system had an impact on Polish schools. Due to these changes, teachers need to handle such challenges as a tarnished image of schools and teachers, hyperactive parents, excessively direct students’ behaviors and social problems, especially school violence; all of them are greatly deconstructive for the school system. An effective coping method is not only teachers’ lifelong development, especially in terms of social competencies, but also establishing students’ competencies from the very early stage of education. To achieve that, teachers should create a suitable atmosphere in the area of interpersonal relations, which can be achieved by creating a very effective internal communication system. A constructive dialog at school may importantly influence not only the development of students’ mediation skills, but also the mitigation of conflicts and tensions. This is also a key component of facilitating the mediation process.

Źródło:

Studia Edukacyjne; 2021, 62; 231-242
1233-6688

Pojawia się w:

Studia Edukacyjne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 68.

Tytuł:

Transient Processes Associated with Turning an Antenna On and Off

Autorzy:

Witenberg, Anna

Powiązania:

https://bibliotekanauki.pl/articles/27311952.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

effective light meter
pulse excitation
transient processes in antenna

Opis:

The paper discusses the phenomena accompanying switching the sinusoidal excitation of an antenna on and off when the antenna is excited by a train of sinusoids containing several to several hundred periods. Transient phenomena are presented against the background of the resonant properties of the antenna. The processes of turning the antenna on and off take place under different conditions and therefore are different. When the antenna is switched on, the transient processes are determined by the antenna properties and the excitation properties. When the antenna is switched off, excitation is no longer present, and the properties of the antenna determine the transient process. We define a new measure of time: the effective light meter.

Źródło:

International Journal of Electronics and Telecommunications; 2023, 69, 4; 675--681
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 69.

Tytuł:

IP box effects in the gaming industry

Autorzy:

Białek-Jaworska, Anna
Teterycz, Agnieszka
Sichel, Ricardo
Woźniak, Michał

Powiązania:

https://bibliotekanauki.pl/articles/35019302.pdf

Data publikacji:

2023-06-15

Wydawca:

Akademia Leona Koźmińskiego w Warszawie

Tematy:

IP box
Innovation box
Effective tax rate
Gaming industry

Opis:

Purpose – This paper aims to verify how the intellectual property (IP) box affects firms’ effective tax rate, growth and innovation activity outcomes related to intellectual property rights. Design/methodology/approach – Implementing the innovation box regimes into the tax system intends to encourage firms to engage in more innovative activities. In UK, Italy and Poland, the IP box tax relief was introduced in 2013, 2015 and 2019, respectively. In return, companies may reduce their tax rate to increase their investment and innovativeness. With a panel model approach – system GMM and DiD with multiple time periods – it analyses data from the Orbis database for 2011–2019 of 673 firms from the gaming industry in 11 countries and hand-collected data on intellectual property rights protection. The authors study public and private companies from the gaming sector in leading European markets and all three countries that protect intellectual property rights of software (Japan, South Korea, the USA). Findings – Recent reforms enable gaming companies to use preferential tax treatment for IP-related income and significantly impact a firm’s revenue growth. Practical implications – Nevertheless, European gaming firms require time to leap the gap to the growth and innovativeness of countries that protect software. Originality/value – The authors show that the IP box stimulates gaming firms to protect IP via wordmarks, figurative marks, trademarks and software patents that bring effects in five years. Despite the critics against IP box, the authors prove its lagged efficiency, especially in profitable and larger firms.

Źródło:

Central European Management Journal; 2023, 31, 3; 291-325
2658-0845
2658-2430

Pojawia się w:

Central European Management Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 70.

Tytuł:

Optimization of the heat treatment process of a steel porous charge using an integrated modelling

Autorzy:

Wyczółkowski, R.
Benduch, A.

Powiązania:

https://bibliotekanauki.pl/articles/102836.pdf

Data publikacji:

2014

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

porous charge
heat treatment
integrated modelling
effective thermal conductivity

Opis:

The paper discusses the structure and principle of operation of programs for integrated modelling of the processes of heat treatment of porous-structure steel charges, such as long product bundles or strip or wire coils. Consideration is given to the specificity of these models in respect to porous charges. This is associated with their untypical thermal properties, which are expressed using the concept of effective thermal conductivity.

Źródło:

Advances in Science and Technology. Research Journal; 2014, 8, 24; 13-18
2299-8624

Pojawia się w:

Advances in Science and Technology. Research Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 71.

Tytuł:

Time Management as a Pedagogical Technology of PhD Students’ Effective Self-Management

Autorzy:

Lukianova, Larysa
Androshchuk, Iryna
Banit, Olga

Powiązania:

https://bibliotekanauki.pl/articles/1967711.pdf

Data publikacji:

2019-06-30

Wydawca:

Wydawnictwo Adam Marszałek

Tematy:

PhD student
pedagogical technology
effective self-management
time management

Opis:

The article reveals the importance of the time management problem and substantiates the expediency of its research. It describes peculiarities of time management as a pedagogical technology concentrating on its principles; analysis of technology genesis was carried out in the works by foreign and domestic scientists from different fields of science. Five groups of problems solved with the help of this technology were identified. It was found out that time management within our research meets the requirements of a pedagogical technology effectively facilitating PhD students’ self-management. It was proved that it combines features of professional management technology as well as effective self-management.

Źródło:

The New Educational Review; 2019, 56; 53-65
1732-6729

Pojawia się w:

The New Educational Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 72.

Tytuł:

A stochastic eigenproblem of beams with cracked cross-sections
Stochastyczne zagadnienie własne belek ze szczelinami

Autorzy:

Drewko, J.
Hien, T. D.

Powiązania:

https://bibliotekanauki.pl/articles/281162.pdf

Data publikacji:

2002

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

fracture mechanics
effective stiffness
stochastic eigenpair
second-order perturbation

Opis:

A nonstatistical methodology is introduced for eigenproblems of cracked cross-sectional beam systems with random parameters. The formalism is based on a combination of the second-order perturbation technique and mean-centered second moment analysis. The system random parameters are defined by their first two probalistic moments. Hierarchical equations are obtained and solved for the first two probalistic moments for the eigenvalue field. As the system matrix is nonsymmetric, a procedure for the exact solution of the sensitivity equations is proposed with each eigenvalue derivative solved for separatively. Analytical and numerical aspects of the problem are discussed and illustrative results are given. The approach presented is general and may be employed for a wide class of problems of fracture mechanics.
W pracy przedstawiono niestatystyczną metodologię w zastosowaniu do zagadnień własnych układów belkowych osłabionych szczelinami i opisanych parametrami losowymi. Problem sformułowano na podstawie kombinacji metody perturbacji drugiego rzędu i analizy drugich centralnych momentów statystycznych. Parametry losowe układu zdefiniowane są przez ich pierwsze dwa momenty statystyczne. Otrzymany hierarchiczny układ równań rozwiązano dla pierwszych dwóch momentów statystycznych częstotliwości i wektorów własnych. Ze względu na niesymetryczność macierzy układu, zaproponowano algorytm ścisłego rozwiązania dla pierwszych pochodnych częstotliwości własnych względem zmiennych losowych. Aspekty analityczne, numeryczne oraz przykłady ilustrujące sformułowanie przedyskutowano szczegółowo. Podejście ma charakter ogólny i może być stosowane do szerokiej klasy zagadnień mechaniki pękania.

Źródło:

Journal of Theoretical and Applied Mechanics; 2002, 40, 4; 1001-1019
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 73.

Tytuł:

The Application of Effective Microorganisms Preparation in Growing of Zonal Pelargonium (Pelargonium zonale)
Zastosowanie preparatu Efektywne Mikroorganizmy w uprawie pelargonii rabatowej (Pelargonium zonale)

Autorzy:

Schroeter-Zakrzewska, A.
Wolna-Maruwka, A.
Borowiak, K.

Powiązania:

https://bibliotekanauki.pl/articles/389315.pdf

Data publikacji:

2013

Wydawca:

Towarzystwo Chemii i Inżynierii Ekologicznej

Tematy:

Effective Microorganism
dehydrogenases
SPAD
chlorophyll
efektywne mikroorganizmy
dehydrogenaza
chlorofil

Opis:

The aim of the conducted experiment was to evaluate dehydrogenase activity in the substrate and to determine the effect of Effective Microorganisms (EM) on the growth and flowering of zonal pelargonium. Plants were grown in pots in a greenhouse in two types of substrate. One substrate was deacidified highmoor peat and the other was highmoor peat with an addition of loam (at a 4:1 volumetric ratio). Plants were treated once with an EM preparation diluted in water at different proportions of 1:10, 1:50 and 1:100. Inoculum was administered in foliar treatment by spraying plants at 10 cm3 solution per plant and to the soil at 50 cm3 solution per pot. Foliar and soil application of EM had a positive effect of plant flowering. In contrast, it did not have an effect on plant height and the number of leaves. The SPAD index and chlorophyll content in leaves depended on the method of application, concentration of applied inoculum as well as the type of substrate, in which pelargonium was grown. Irrespective of the concentration of EM and the type of substrate inoculation of both soil and plants contributed to an increased activity of dehydrogenases.
Celem przeprowadzonego doświadczenia była ocena aktywności dehydrogenazy w podłożu, a także określenie wpływu Efektywnych Mikroorganizmów (EM) na wzrost i kwitnienie pelargonii rabatowej. Rośliny uprawiano w doniczkach, w szklarni w dwóch rodzajach podłoża. Pierwszym podłożem był odkwaszony torf wysoki, a drugim – torf wysoki z dodatkiem glinki (w stosunku objętościowym 4:1). Rośliny jednorazowo potraktowano preparatem EM rozcieńczonym w wodzie w różnych proporcjach 1:10, 1:50 i 1:100. Szczepionkę aplikowano dolistnie, opryskując rośliny dawką 10 cm3 roztworu na roślinę i doglebowo w dawce 50 cm3 roztworu na doniczkę. Dolistna i doglebowa aplikacja EM wywarła pozytywny wpływ na kwitnienie roślin. Nie miała natomiast wpływu na wysokość roślin i liczbę liści. Indeks zazielenienia liści oraz zawartość chlorofilu w liściach zależała od sposobu aplikacji, stężenia zastosowanej szczepionki a także od rodzaju podłoża, w którym uprawiana była pelargonia. Niezależnie od stężenia EM i rodzaju podłoża inokulacja zarówno gleby, jak i roślin przyczyniła się do zwiększenia poziomu aktywności dehydrogenaz.

Źródło:

Ecological Chemistry and Engineering. A; 2013, 20, 6; 701-708
1898-6188
2084-4530

Pojawia się w:

Ecological Chemistry and Engineering. A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 74.

Tytuł:

E-mentoring: an effective platform for distance learning

Autorzy:

Iqbal, Hafiz

Powiązania:

https://bibliotekanauki.pl/articles/425975.pdf

Data publikacji:

2020

Wydawca:

Szkoła Główna Handlowa w Warszawie

Tematy:

e-mentoring
knowledge management
online technology
scaffolding
effective learning

Opis:

The provision of mentoring is essential for learning to take place, and current online technology is changing the nature of mentoring. This study examines the effectiveness of e-mentoring and develops its management practice. This study extensively uses historical reviews to seek a better policy for e-mentoring. It covers the literature on different forms of mentoring, including books, journals, online documents, research reports, and newspaper articles related to e-mentoring. Based on the findings from the literature, this study suggests that e-mentoring compares well to those of other mentoring approaches traditionally used. The study gives an overview of e-mentoring tactics, practices, and strategies. The findings of this will be useful for national and international policymakers and stakeholders, in promulgating effective e-mentoring policies.

Źródło:

e-mentor. Czasopismo naukowe Szkoły Głównej Handlowej w Warszawie; 2020, 84, 2; 54-61
1731-6758
1731-7428

Pojawia się w:

e-mentor. Czasopismo naukowe Szkoły Głównej Handlowej w Warszawie

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 75.

Tytuł:

Outsourcing w produkcji węgla kamiennego jako droga do efektywnego wykorzystania czasu dyspozycyjnego pracy maszyn i urządzeń urabiających na przykładzie wybranej kopalni
Outsourcing service in the production of hard coal as a way for effective use of machine and mine equipment operation available time illustrated with an example of a selected mine

Autorzy:

Kutkowski, J.
Zaniewski, K.

Powiązania:

https://bibliotekanauki.pl/articles/167316.pdf

Data publikacji:

2014

Wydawca:

Stowarzyszenie Inżynierów i Techników Górnictwa

Tematy:

outsourcing
czas dyspozycyjny
czas efektywny
available time
effective time

Opis:

Prowadzone obserwacje i analizy kosztów wykazały, że 81 % kosztów całkowitych w kopalni stanowią koszty stałe. Autorzy artykułu zastanawiają się nad znalezieniem algorytmu postępowania lub zmodyfikowaniem istniejącego procesu produkcji w celu ograniczenia kosztów stałych. Zdaniem autorów rozwiązaniem problemu może być outsourcing z procesu podstawowego podprocesów, który umożliwi racjonalny podział odpowiedzialności i kompetencji z jednoczesnym przejęciem ryzyka za ewentualne straty.
Conducted observations and cost analyses have shown that 81% of total costs in mines are the fixed costs. The authors of this paper are seeking for an algorithm of conduct and for modifying the existing production processes in order to reduce the amount of the fixed costs. According to the authors, the solution for this issue may be the use of outsourcing service which, excluded from the core operation of a mining plant, would ensure rational sharing of responsibilities and competence together with assumption of risk for presumable losses.

Źródło:

Przegląd Górniczy; 2014, 70, 9; 52-54
0033-216X

Pojawia się w:

Przegląd Górniczy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 76.

Tytuł:

Bariery skutecznego zarządzania reklamacjami - studium przypadku
Barriers to effective management of complaints - case study

Autorzy:

Szczerba, B.
Białecka, B.

Powiązania:

https://bibliotekanauki.pl/articles/113051.pdf

Data publikacji:

2016

Wydawca:

STE GROUP

Tematy:

zarządzanie reklamacjami
system
bariery
skuteczność
complaint management
barriers
effective

Opis:

Obecnie wśród przedsiębiorstw produkcyjnych coraz większe znaczenie zyskuje zasób wiedzy, który nierzadko postrzegany jest jako przewaga konkurencyjna w dynamicznie zmieniającym się otoczeniu. Najcenniejszym źródłem informacji jest klienta, zarówno zewnętrzny, jaki i wewnętrzny. To on odgrywa kluczową rolę, ponieważ umożliwia przedsiębiorstwu wygenerować zysk. Stąd ważne jest, aby spełniać ustalone wymagania, które nierzadko są bardzo trudne do zrealizowania, szczególnie biorąc pod uwagę aspekty jakościowe w przemyśle motoryzacyjnym. Przejawem niespełnienia wymagań są reklamacje. Zazwyczaj są one niepożądane przez przedsiębiorstwa, jednak w literaturze można znaleźć publikacje, gdzie zgłoszenia klientów są traktowane, jako szansa na doskonalenie oraz rozwój działalności firmy. Aby skutecznie zarządzać reklamacjami oraz przetwarzać zdobyte dane w informacje, a następnie w wiedzę nieodzowne jest wprowadzenie odpowiedniego systemu. W artykule autorzy poddali analizie przykładowy system zarządzania reklamacjami, gdzie bazując na swoim doświadczeniu oraz wiedzy teoretycznej zidentyfikowali bariery uniemożliwiające jego skuteczne funkcjonowanie.
Currently, among the manufacturing companies increasing importance of gaining knowledge, which often is seen as a competitive advantage in the rapidly changing environment. The most valuable source of information is the customer, both external and internal. It was he who plays a key role, as it allows the company to generate a profit. Hence, it is important to meet the standards, which often are very difficult to implement, especially considering the qualitative aspects of the automotive industry. A manifestation of non-compliance is complaints. They are usually unwanted by the company, but in literature you can find publications, where requests from clients are treated as an opportunity for improvement and development of the company. To effectively manage complaints and process the acquired data into information and then into knowledge is indispensable to introduce a suitable system. The authors analyzed an example of complaint management system, where, based on his experience and theoretical knowledge have identified barriers to its effective functioning.

Źródło:

Systemy Wspomagania w Inżynierii Produkcji; 2016, 2 (14); 305-319
2391-9361

Pojawia się w:

Systemy Wspomagania w Inżynierii Produkcji

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 77.

Tytuł:

The Ethical, Political and Economic Challenges of Effective Altruism

Autorzy:

Kucz, Mateusz
Rosół, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/943819.pdf

Data publikacji:

2020

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

values
effective altruism
charity
philosophy of economy
means
goals

Opis:

This paper presents a critical evaluation of ethical and philosophical concerns about the effective altruism as an ethical position. Effective altruists claim that one of our important ethical obligations is to do the most good possible, with the biggest possible positive impact. This impact should be measured with rational tools and by evaluating the effectiveness of our actions. At first glance, this might seem as a consensus building position, a good starting point for building a community of people wanting to change the world for the better. In our paper, we present some difficulties which are connected with such a way of thinking about charity and an ethical obligation to donate. We discuss the problem of the commercialization of ethical values, understanding effectiveness, agreeing about goals, as well as the political consequences of effective altruism understood as an ethical position.

Źródło:

Ethics in Progress; 2020, 11, 1; 61-76
2084-9257

Pojawia się w:

Ethics in Progress

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 78.

Tytuł:

Two methods for determination of the effective wavenumber of Gaussian beams in absolute gravimeters

Autorzy:

Křen, P.
Pálinkáš, V.

Powiązania:

https://bibliotekanauki.pl/articles/220517.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

diffraction correction
effective wavenumber
interferometer
Gaussian beam
absolute gravimeter

Opis:

This paper presents two methods for evaluation of the effective wavenumber of nearly-Gaussian beams in laser interferometers that can be used for determination of a so called diffraction correction in absolute gravimeters. The first method, that can be simply used in situ, is an empirical procedure based on the evaluation of the variability of g measurements against the amount of light limited by an iris diaphragm and transmitted to a photodetector. However, precision of this method depends on the beam quality similarly as in the case of the conventional method based on measurement of a beam width. The second method, that is more complex, is based on beam profiling in various distances and on calculation of the effective wavenumber using the second spatial derivative of a non-ideal beam field envelope. The measurement results achieved by both methods are presented on an example of two absolute gravimeters and the determined diffraction corrections are compared with the results obtained by measurements of beam width. Agreement of methods within about 1 μGal have been obtained with average diffraction corrections slightly exceeding +2 μGal for three FG5(X) gravimeter configurations.

Źródło:

Metrology and Measurement Systems; 2018, 25, 4; 701-713
0860-8229

Pojawia się w:

Metrology and Measurement Systems

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 79.

Tytuł:

Improved Prediction of Polar Motions by Piecewise Parameterization

Autorzy:

Wu, Yuanwei
Zhao, Xin
Yang, Xinyu

Powiązania:

https://bibliotekanauki.pl/articles/2174948.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Centrum Badań Kosmicznych PAN

Tematy:

earth rotation prediction
effective angular momentum functions
AAM
OAM

Opis:

Natioinal Time Service Center of Chinese Academy of Sciences, Lintong, Shaanxi, China e-mail: yuanwei.wu@ntsc.ac.cn ABSTRACT. On seanonal timescale, the variation of Earth rotation is mainly regulated by angular momentum exchanges between the solid Earth and the fluidal atmosphere, ocean and hydrosphere. In the 2nd EOP PCC, we developed Dill2019’s method for polar motion prediction, using piecewise autoagressive parameters. The maximum prediction errors within 90 days are 36 and 16 mas for polar motion x and y components, respectively. Compared with Bulletin A, the mean absolute error of polar motion y prediction is improved by 20% in all timescale, and with a maximum improvement of 49% on the 5th day. Whereas, for polar motion x, the performance is slightly better (2% - 8%) within 30 days but worse (−7%∼ −19%) within 30∼90 days. We found that the prediction accuracy is very sensitive to the quality of the angular momentum data. For example, on average, the prediction of polar motion y is around 2 times better than polar motion x. In addition, we found the accuracy of 30-90 days prediction is dramatically decreased in the year 2020. We suspect that such deterioration might be due to the pandemic of coronavirus COVID-19, which suppressed global airline activities by more than 60%, then result in a lose of air-borne meteorological data, which are important for weather forecast.

Źródło:

Artificial Satellites. Journal of Planetary Geodesy; 2022, 57, Special Issue 1; 290--299
2083-6104

Pojawia się w:

Artificial Satellites. Journal of Planetary Geodesy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 80.

Tytuł:

Thermodynamic and dynamical properties of dense ICF plasma

Autorzy:

Gabdullin, M. T.
Kodanova, S. K.
Ramazanov, T. S.
Issanova, M. K.
Ismagambetova, T. N.

Powiązania:

https://bibliotekanauki.pl/articles/146117.pdf

Data publikacji:

2016

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

Coulomb logarithm
effective interaction potential
equation of state
stopping power

Opis:

In present work, thermodynamic expressions were obtained through potentials that took into consideration long-range many-particle screening effects as well as short-range quantum-mechanical effects and radial distribution functions (RDFs). Stopping power of the projectile ions in dense, non-isothermal plasma was considered. One of the important values that describe the stopping power of the ions in plasma is the Coulomb logarithm. We investigated the stopping power of ions in inertial confi nement fusion (ICF) plasma and other energetic characteristics of fuel. Calculations of ions energy losses in the plasma for different values of the temperature and plasma density were carried out. A comparison of the calculated data of ion stopping power and energy deposition with experimental and theoretical results of other authors was also performed.

Źródło:

Nukleonika; 2016, 61, 2; 125-129
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 81.

Tytuł:

Data Reduction Method for Synthetic Transmit Aperture Algorithm

Autorzy:

Karwat, P.
Klimonda, Z.
Sęklewski, M.
Lewandowski, M.
Nowicki, A.

Powiązania:

https://bibliotekanauki.pl/articles/177848.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

ultrasonic imaging
synthetic transmit aperture
data reduction
effective aperture
reciprocity

Opis:

Ultrasonic methods of human body internal structures imaging are being continuously enhanced. New algorithms are created to improve certain output parameters. A synthetic aperture method (SA) is an example which allows to display images at higher frame-rate than in case of conventional beam-forming method. Higher computational complexity is a limitation of SA method and it can prevent from obtaining a desired reconstruction time. This problem can be solved by neglecting a part of data. Obviously it implies a decrease of imaging quality, however a proper data reduction technique would minimize the image degradation. A proposed way of data reduction can be used with synthetic transmit aperture method (STA) and it bases on an assumption that a signal obtained from any pair of transducers is the same, no matter which transducer transmits and which receives. According to this postulate, nearly a half of the data can be ignored without image quality decrease. The presented results of simulations and measurements with use of wire and tissue phantom prove that the proposed data reduction technique reduces the amount of data to be processed by half, while maintaining resolution and allowing only a small decrease of SNR and contrast of resulting images.

Źródło:

Archives of Acoustics; 2010, 35, 4; 635-642
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 82.

Tytuł:

Natural radioactivity in building materials in Iran

Autorzy:

Mehdizadeh, S.
Faghihi, R.
Sina, S.

Powiązania:

https://bibliotekanauki.pl/articles/147658.pdf

Data publikacji:

2011

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

gamma spectroscopy
absorbed dose rate
annual effective dose
hazard index

Opis:

This work presents a comprehensive study of natural radioactivity in building materials used in Iran. For this purpose, 177 samples of five types of building material, i.e. cement, gypsum, cement blocks, gravel and brick, were gathered from different regions of the country and analyzed by gamma spectroscopy to quantify radioactivity concentrations using a high purity germanium (HPGe) detector and a spectroscopy system. According to the results of this investigation, cement samples had maximum values of the mean Ra-226 and Th-232 concentrations, 39.6 and 28.9 Bq/kg, respectively, while the lowest value for mean concentration of these two radionuclides were found in gypsum samples 8.1 and 2.2 Bq/kg, respectively. The highest (851.4 Bq/kg) and lowest (116.2 Bq/kg) value of K-40 mean concentration were found in brick and gypsum samples, respectively. The absorbed dose rate and the annual effective dose were also calculated from the radioactivity content of the radionuclides. The results show that the maximum values of dose rate and annual effective dose equivalent were 53.72 nGy/h and 0.37 mSv/y in brick samples. The radium equivalent activities Req calculated were below the permissible level of 370 Bq/kg for all building materials. The values of hazard indexes were below the recommended levels, therefore, it is concluded that the buildings constructed from such materials are safe for the inhabitants. The results of this study are consistent with the results of other investigations in different parts of the world.

Źródło:

Nukleonika; 2011, 56, 4; 363-368
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 83.

Tytuł:

Mössbauer investigation of some bcc, Fe - based, multicomponent alloys

Autorzy:

Olszewski, W.
Szymański, K.
Satuła, D.
Oleszak, D.

Powiązania:

https://bibliotekanauki.pl/articles/147836.pdf

Data publikacji:

2013

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

Debye approximation
effective thickness
Mössbauer spectroscopy
second order Doppler shift

Opis:

Mössbauer measurements of a Fe-based, bcc multicomponent alloys with concentration of non-ferrous element x = (0.1, 0.3 and 0.6) were performed. The effective thickness parameters and the second order Doppler shifts were determined as a function of temperature. The results indicate an apparent decrease of the recoilless fraction with x. The observed trends are consistent with theoretical results indicating modifications of phonon density of states by bond disorder.

Źródło:

Nukleonika; 2013, 58, 1; 165-168
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 84.

Tytuł:

Research into the effects of the effective microorganisms addition on the engine oil viscosity

Autorzy:

Krakowski, Rafał

Powiązania:

https://bibliotekanauki.pl/articles/246239.pdf

Data publikacji:

2019

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

petroleum products
oil viscosity
engine oil
microbiological contamination
effective microorganisms

Opis:

In the article, changes in the properties of oils during operation were characterized. The main reason for this is the continuous aging process of the used oil caused by the interaction of oxygen contained in the air, which reacts relatively easily with hydrocarbons and the oxidation process is accelerated just by high temperature. Then the problem of microorganisms occurring in petroleum products and their effect on the properties of oils and the operation of the internal combustion engine was presented. The next part of the article presents effective microorganisms, i.e. what they are and how they work, in particular, their composition and appropriate development conditions. In addition, some of their specific applications were briefly described. In the next part of the article, the research methodology, applied oil samples with additives of effective microorganisms, both for fresh oil and used oil were described. In addition, the measuring test stand with instrumentation and measuring device was shown. The main part of the article contains the characteristics of dynamic viscosity as a function of temperature for fresh oil and used oil compared with oils with the addition of microorganisms in liquid form and ceramic tubes. The developed graphs enabled analysis of the effect of the addition of microorganisms on oil viscosity as ecological products.

Źródło:

Journal of KONES; 2019, 26, 3; 105-112
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 85.

Tytuł:

Rola aplikacji dydaktycznych w nauczaniu zdalnym

Autorzy:

Pokrzycka, Lidia

Powiązania:

https://bibliotekanauki.pl/articles/1181994.pdf

Data publikacji:

2021

Wydawca:

Szkoła Główna Handlowa w Warszawie

Tematy:

educational applications
effective e-learning
teaching practice
motivation
asynchronous classes

Opis:

In times of the coronavirus pandemic, distance learning has become mandatory for higher education. That requires using a variety of teaching methods, both synchronous and asynchronous, and their common feature is the use of ICT tools. The aim of the article is to present applications used for making the remote lectures more attractive and engaging for journalism students of graduate and doctoral studies and foreigners from the English-language Doctoral School of Social Sciences of UMCS. The author also reflects on students' appreciation of such solutions initially during blended learning and then e-learning classes. That is based on the survey conducted among 30 doctoral students who carried out their lectures using internet applications. The study confirmed that the applications motivate students to work systematically and additionally to use them during their apprenticeships or while working in various companies with marketing, advertising, or public relations profile. Students also appreciate asynchronous classes and the fact that the use of applications allows them to repeat the most important pieces of information in a stress-free mode. Graphical applications make even tricky topics easier to remember while enabling students to illustrate the theory with practical elements.

Źródło:

e-mentor. Czasopismo naukowe Szkoły Głównej Handlowej w Warszawie; 2021, 88, 1; 30-36
1731-6758
1731-7428

Pojawia się w:

e-mentor. Czasopismo naukowe Szkoły Głównej Handlowej w Warszawie

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 86.

Tytuł:

Radon Concentration in Drinking Water Samples at Hilla city, Iraq

Autorzy:

Muttaleb Al-jnaby, Mohsin Kadhim

Powiązania:

https://bibliotekanauki.pl/articles/1189957.pdf

Data publikacji:

2016

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Babylon
water
radon
concentrations
annual effective dose
RAD7
UNSCEAR

Opis:

The radioactivity of radon gas in thirty eight samples of drinking water that manufactured in different regions of Hilla, the center of Babylon (Iraq) have been measured by RAD7 detector. The high and low average radon concentration, average standard deviation and the annual dose have been calculated, where the result were A16 (0.193 ±0.0211) Bq•L-1, A1 (0.0361 ±0.00014) Bq•L-1, the average of radon concentration (0.115 ±0.048) Bq•L-1 and the annual effective dose was 0.413 mSv•y-1

Źródło:

World Scientific News; 2016, 52; 130-142
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 87.

Tytuł:

Konduktometryczne wyznaczanie efektywnego współczynnika dyfuzji jonów miedzi w granulkach biosorbentu alginianowego
Determination of effective diffusion coefficient for copper ions in alginate beads using the conductometric method

Autorzy:

Kwiatkowska-Marks, S.
Kopiński, L.
Wójcik, M.

Powiązania:

https://bibliotekanauki.pl/articles/2071476.pdf

Data publikacji:

2011

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

efektywny współczynnik dyfuzji
alginian
miedź
effective diffusion coefficient
alginates
copper

Opis:

Opracowano nową metodę wyznaczania efektywnego współczynnika dyfuzji metali ciężkich w granulkach alginianowych, polegającą na pomiarze zawartości jonów metalu w roztworze za pomocą konduktometru. Wzrost zawartości alginianu w granulkach prowadził do zmniejszenia się wartości De jonów miedzi (w zakresie od 0.78 do 0,99-10-9 [m2/s]zgodnie z mechanizmem dyfuzji w porowatych nośnikach.
A new method was developed for the determination of effective diffusion coefficient of heavy metal ions in beads of biosorbents. This method is based on conductometric measurements of ions in solution. Its usefulness was confirmed in the determination of effective diffusivity for copper ions in alginate beads. It was found that effective diffusivity De ranged from 0.78-10-9 to 0.99-10-9 [m2/s] and decreased with increased alginate concentration in accordance with a mechanism of diffusion in porous carries.

Źródło:

Inżynieria i Aparatura Chemiczna; 2011, 6; 9-11
0368-0827

Pojawia się w:

Inżynieria i Aparatura Chemiczna

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 88.

Tytuł:

Net solar radiation in the southern part of the Krakow-Czestochowa Upland in the period of 2008-2014
Saldo promieniowania słonecznego w południowej części Wyżyny Krakowsko-Częstochowskiej w okresie 2008-2014

Autorzy:

Caputa, Z.

Powiązania:

https://bibliotekanauki.pl/articles/35341.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Tematy:

solar radiation
effective radiation
Krakow-Czestochowa Upland
2008-2014 period

Opis:

The objective of this study was to determine the net shortwave solar radiation (K*) on a plateau and the bottom of a canyon in the southern part of the Kraków-Częstochowa Upland. Its significant diurnal and annual variability was expressed as hourly, daily, monthly, seasonal and annual totals of K*. The great diversity of the terrain, varied forms, expositions and slopes, considerable denivelations, and also the diversity of the land cover and land use make this small area very diversified as far as radiation conditions are concerned. On the basis of the actinometrical study, the differences of radiation were assessed on two distinct morphological terrain forms: on the plateau and on the bottom of the canyon. The mean daily value of the total of K* amounted to 10.8 MJ·mˉ² on the plateau, and to 9.1 MJ·mˉ² on the bottom of the canyon in the analysed period.
Przedmiotem badań było saldo promieniowania słonecznego (K*) na wierzchowinie i na dnie kanionu w południowej części Wyżyny Krakowsko-Częstochowskiej. Zmienność dobową i roczną K* wyrażono jako sumy godzinne, dzienne, miesięczne, sezonowe i roczne w okresie 2008-2014. Duża różnorodność terenu, zróżnicowane formy, ekspozycje i stoki, duże deniwelacje, a także różnorodność pokrycia terenu i użytkowania gruntów sprawia, że ten krasowy obszar ma zróżnicowane warunki insolacyjne. Wykazano dużą zmienność salda K* oraz jego uwarunkowanie ze względu na zasłonięcie horyzontu przez strome ściany kanionu. Różnice promieniowania pochłoniętego oceniano dla dwóch różnych form morfologicznych: wierzchowiny i dna kanionu. Średnia dzienna wartość sumy K* w analizowanym okresie wyniosła 10,8 MJ·mˉ² na wierzchowinie i 9,1 MJ·mˉ² na dnie kanionu. Analogicznie do wymienionych form terenowych średnie roczne sumy K* dla analizowanego okresu wyniosły 3955 i 3312 MJ·mˉ².

Źródło:

Acta Agrophysica; 2016, 23, 2
1234-4125

Pojawia się w:

Acta Agrophysica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 89.

Tytuł:

Efektywna współpraca administracji i biznesu. Rekomendacje działań
Effective cooperation between public administration and business. Recommended measures

Autorzy:

Giedrojć, Kuba

Powiązania:

https://bibliotekanauki.pl/articles/11542229.pdf

Data publikacji:

2015

Wydawca:

Kancelaria Sejmu. Biuro Analiz Sejmowych

Tematy:

cooperation between administration and business
employer organisations
effective communication
lobbying

Opis:

The article identifies the obstacles to the development of effective cooperation between administration and business. They were broken down into three groups: systemic, cognitive and communication-related. Next, the author proposes some measures that could be adopted to enhance the efficiency of such cooperation, divided into seven groups related to organisation, cognition, communication, management, lobbying, society, and legislation. The biggest number of the proposed solutions is related to the development of ongoing dialogue and overcoming stereotypical perceptions that both sides have of each other. The list of obstacles and the recommendations were prepared by businesspeople and public officials as a part of a project carried out by the Polish Confederation of Private Employers Lewiatan.

Źródło:

Studia BAS; 2015, 1(41); 29-49
2080-2404
2082-0658

Pojawia się w:

Studia BAS

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 90.

Tytuł:

Effective Iron-Accumulating Bacteria Isolated from Chemical Laboratory Drainage for Iron Removal

Autorzy:

Hasan, Hassimi Abu
Jamal, Nuradila
Abdullah, Siti Rozaimah Sheikh
Abu Bakar, Siti Nur Hatika
Muhamad, Mohd Hafizuddin
Li, Xiangkun

Powiązania:

https://bibliotekanauki.pl/articles/1839080.pdf

Data publikacji:

2021

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

iron-accumulating bacteria
heavy metal
bioaccumulation
effective microbe
Pseudomonas hibiscicola

Opis:

Improperly treated heavy metal wastewater discharged into water sources could cause a serious issue for the environment. The aim of this study was to bioaccumulate iron (Fe) using native bacteria isolated from the laboratory drainage water containing a high concentration of iron. The experiment was conducted in 250 mL conical flasks containing 150 mL Fe solution in concentrations of 25, 100, and 250 mg/L, respectively. Approximately 10% of bacteria inoculum was cultivated in each Fe concentration for 24 and 48 hours. The results showed that Pseudomonas hibiscicola was identified as an effective iron-accumulating species of bacteria. The species could remove Fe up to 82% (25 mg/L), 77.8% (100 mg/L) and 32% (250 mg/L). This promising result indicates that the native bacteria isolated from the environment pose a great potential for the remediation of wastewater containing iron.

Źródło:

Journal of Ecological Engineering; 2021, 22, 2; 187-194
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 91.

Tytuł:

FATIH Project in Turkey: A Case Analysis

Autorzy:

Yavuzalp, Nuh
Derya Gürer, Melih
Curaoğlu, Orhan
Durmuş, Soner
Akayoğlu, Sedat
Bahar, Mehmet
Kiliç, Fahri
Tekinarslan, Erkan

Powiązania:

https://bibliotekanauki.pl/articles/448418.pdf

Data publikacji:

2016-12-01

Wydawca:

Wydawnictwo Uniwersytetu Śląskiego

Tematy:

Information technology
FATIH project in Turkey
effective use of IT

Opis:

In the 2023 vision strategy, prepared by TUBITAK in Turkey, Information Technology (IT), areas have been designated for target countries and FATIH project started in 2010. In order to achieve the aimed goals, FATIH (Increasing Opportunities and Improving Technology Movement) project consists of five main components. These components establish hardware and software infrastructure, educational e-content preparation and management, effective use of IT in the curriculum, in-service training of teachers, conscious, reliable, manageable and quantifiable IT use. The first component identifies technical infrastructures of school. The second component was created for the provision of education al content which is Education Information Network (EIN). The third component considers training programs. The fourth and fifth components of the effective use of IT by teachers discuss the issue of conscious and reliable Internet use and plan information for the in-service training. This paper presents the first component of the FATIH project and discusses the current situation and future goals of the ongoing project.

Źródło:

International Journal of Research in E-learning IJREL; 2015, 1, 1; 117-127
2451-2583
2543-6155

Pojawia się w:

International Journal of Research in E-learning IJREL

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 92.

Tytuł:

Coal permeability change caused by mining-induced stress

Autorzy:

Zhang, Lulu
Li, Bo
Wei, Jianping
Wen, Zhihui
Ren, Yongjie

Powiązania:

https://bibliotekanauki.pl/articles/89077.pdf

Data publikacji:

2019

Wydawca:

Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa

Tematy:

mining-induced stress
permeability
unloading path
sensitivity index
effective stress

Opis:

To study coal permeability evolution under the influence of mining actions, we conducted a sensitivity index test on permeability to determine the influence of axial and confining stresses on coal permeability. Loading and unloading tests were performed afterward, and the differences between loading and unloading paths in terms of strain and permeability were studied. A permeability evolution model was built in consideration of absorption swelling and effective stress during modeling. An effective stress calculation model was also built using axial and confining stresses. The calculation results of the two models were compared with experimental data. Results showed that permeability were more sensitive to confining stress than axial stress, and effective stress placed a large weight on confining stress. Large axial and radial deformations at peak strength were observed during unloading. In the unloading phase, the permeability of coal began to increase, and the increment was enhanced by large initial axial stress when confining stress was loaded. permeability sensitivity to axial and confining stresses were used to explain these permeability changes. The calculation results of the models fitted the experimental data well. Therefore, the proposed models can be used to calculate effective stress on the basis of axial and confining stresses and describe permeability change in coal under the influence of mining actions.

Źródło:

Mining Science; 2019, 26; 203-222
2300-9586
2353-5423

Pojawia się w:

Mining Science

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 93.

Tytuł:

Aktywność 210Pb w wybranych wodach podziemnych z obszaru Karpat polskich
Activity of 210Pb in selected groundwaters in the western part of the Polish Carpathians

Autorzy:

Chau, N. D.
Rajchel, L.
Duliński, M.

Powiązania:

https://bibliotekanauki.pl/articles/2063198.pdf

Data publikacji:

2009

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

210Pb
aktywność promieniotwórcza
obciążająca dawka skuteczna
radioactivity
effective dose

Opis:

W pracy przedstawiono rezultaty analiz aktywności ołowiu 210Pb w 31 próbach wód pobranych ze źródeł i odwiertów na obszarze Karpat polskich. Badaniami objęto trzy typy chemiczne wód. W 23 przypadkach były to szczawy, reprezentowane zarówno przez wody przeznaczone do spożycia, jak i wykorzystywane w balneologii do kąpieli leczniczych. Drugim typem (3 próbki) były wody siarczkowe, stosowane głównie do kąpieli leczniczych. Trzeci typ (5 próbek) stanowiły wody chlorkowe o mineralizacji od 3,5 do 8,0 g/l, stosowane w kuracji pitnej, oraz o mineralizacji od 19 do 28 g/l - wykorzystywane do zabiegów kąpielowych. Jakkolwiek w świetle uzyskanych wyników izotop 210Pb (pojedynczo) nie stanowi zagrożenia radiologicznego, niemniej jednak powinien być uwzględniany przy szacowaniu obciążającej dawki skutecznej, wynikającej z zawartości wszystkich izotopów promieniotwórczych obecnych w wodach podziemnych dostępnych dla ogółu ludności. Szczególną uwagę należy zwrócić na zagrożenia, które mogłyby wynikać w sytuacji podawania niektórych z tych wód niemowlętom i małym dzieciom.
Activity of 210Pb measured in some groundwaters of the Polish Carpathians proves that this isotope is not radiologically hazardous. However, it should be incorporated in calculations of the total effective dose resulted from intake of radionuclides present in drinking waters. A special care should be taken in situations when some of these waters are used in diet of babies and young children.

Źródło:

Biuletyn Państwowego Instytutu Geologicznego; 2009, 436, z. 9/1; 35-40
0867-6143

Pojawia się w:

Biuletyn Państwowego Instytutu Geologicznego

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 94.

Tytuł:

Transport of mutually cooperating triplets of thermal Fourier fluctuations through two-phase periodically layered partition wall
Transport współpracujących ze sobą trójek termicznych fluktuacji Fouriera przez dwufazową periodyczną przegrodę warstwową

Autorzy:

Albin, A.
Kula, D.

Powiązania:

https://bibliotekanauki.pl/articles/2084085.pdf

Data publikacji:

2021

Wydawca:

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

Tematy:

heat conduction
effective heat conduction
boundary effect behaviour
building partition

Opis:

The paper analyses boundary effect behaviour in a building partition made of a two-component layered composite. A two-dimensional model of such barrier has been adopted in which the boundary effect behaviour is described by a system of ODE’s. It has been proved that, for selected types of fluctuations, a hypothesis formulated in the end of the paper is true, i.e. a partition reacts for the presence of boundary package of fluctuations consisting of one even and two odd fluctuations merely with a typical exponentially damped transport of these boundary fluctuations. Their sinusoidal pulsations in the direction transversal to the periodicity directions are not possible. The exponential damping is maximal for components with very different material properties (values of parameters kII/kI and ηI close to zero). Such situations correspond to a characteristic peak of the graphs included in the paper.

Źródło:

Acta Scientiarum Polonorum. Architectura; 2021, 20, 4; 37-54
1644-0633

Pojawia się w:

Acta Scientiarum Polonorum. Architectura

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 95.

Tytuł:

On obtaining effective elasticity tensors with entries zeroing method

Autorzy:

Gierlach, B.
Danek, T.

Powiązania:

https://bibliotekanauki.pl/articles/184753.pdf

Data publikacji:

2018

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

seismic
anisotropy
elasticity tensor
effective tensor
PSO
entries zeroing method

Opis:

The purpose of this paper is to propose a new method for obtaining tensors expressing certain symmetries, called effective elasticity tensors, and their optimal orientation. The generally anisotropic tensor being the result of in situ seismic measurements describes the elastic properties of a medium. It can be approximated with a tensor of a specific symmetry class. With a known symmetry class and orientation, one can better describe geological structure elements like layers and fissures. A method used to obtain effective tensor in the previous papers (i.e. Danek & Slawinski 2015) is based on minimizing the Frobenius norm between the measured and effective tensor of a chosen symmetry class in the same coordinate system. In this paper, we propose a new approach for obtaining the effective tensor with the assumption of a certain symmetry class. The entry zeroing method assumes the minimization of the target function, being the measure of similarity with the form of the effective tensor for the specific class. The optimization of orientation is made by means of the Particle Swarm Optimization (PSO) algorithm and transformations were parameterised with quaternions. To analyse the obtained results, the Monte-Carlo method was used. After thousands of runs of PSO optimization, values of quaternion parts and tensor entries were obtained. Then, thousands of realizations of generally anisotropic tensors described with normal distributions of entries were generated. Each of these tensors was the subject of separate PSO optimization, and the distributions of rotated tensor entries were obtained. The results obtained were compared with solutions of the method based on the Frobenius distances (Danek et al. 2013).

Źródło:

Geology, Geophysics and Environment; 2018, 44, 2; 259-274
2299-8004
2353-0790

Pojawia się w:

Geology, Geophysics and Environment

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 96.

Tytuł:

Engine performance maps in nonstationary operating conditions of car engine

Autorzy:

Ubysz, A.

Powiązania:

https://bibliotekanauki.pl/articles/245565.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

B.S.F.C. map
specific fuel consumption
effective efficiency

Opis:

A method is proposed in the paper to calculate effective efficiency of an engine in nonstationary operating conditions. A reference point for this method is the effective efficiency of the engine derived from its performance map. A research methodology has been developed to this end, the basis of which consists of measurements and calculations of the to tal energy efficiency of a car motion in a variable driving cycle. In order to determine the impact of the road grade, measurements were performed along a geodetically described roadsection in two traffic directions: "up " and "down ". The adopted research scheme allows covering the area of the engine performance map being of interest to us with measuring points. The mean value or rotational speed and its change in unit oftime were adopted as the leading parameters which have a dominating influence on, and result in a reduction of the effective efficiency of the engine. To improve the accuracy of calculations, the variable driving cycle consists of driving phases and idle running. The volume of fuel consumed, not accounted for in the driving phases, being the difference between the calculated and consumed fuel, is a measure of reduction of the effective efficiency of the engine, whilst the unit power of additional motion resistance of the vehicle (a*ni) is a leading parameter in the analyses of the calculation results.

Źródło:

Journal of KONES; 2009, 16, 3; 455-463
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 97.

Tytuł:

Shooting control

Autorzy:

Łukowski, W.

Powiązania:

https://bibliotekanauki.pl/articles/348157.pdf

Data publikacji:

2017

Wydawca:

Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki

Tematy:

shooting control
fire control
effective fire
fire fight
shooting instruction

Opis:

The article presents proposals for changes in terminology related to fire control, which has been fully embedded in the general theory of management. Particular attention is given to replacing the commonly used term “fire control” by “shooting control”. There are pointed issues, which may be taken into account in the new instructions for artillery shooting control.

Źródło:

Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki; 2017, 1; 82-95
1731-8157

Pojawia się w:

Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 98.

Tytuł:

The concept of facility management as a method of effective real estate management

Autorzy:

Chojnacka, Monika

Powiązania:

https://bibliotekanauki.pl/articles/518100.pdf

Data publikacji:

2017

Wydawca:

Uniwersytet Gdański. Wydział Ekonomiczny

Tematy:

Facility management
facilities
real estate management
effective strategy
facility manager

Opis:

The article presents the beneficial factors from the application of facility management (FM) practices. The author analysis the strengths and weaknesses, as well as environment elements‐ both opportunities and threats, influencing FM strategy. The research of this paper is concentrating on this concept within real estate management in enterprises, leading to cost reduction and customer satisfaction growth. Nevertheless, the method seeks to reconcile the interests of owners with interests of users. Facilities (buildings, assets and services), grouped in real estate portfolios, supports primary activities. The study presents particular activities in terms of management of auxiliary processes. Proper real estate management (properties belong to facilities) determines the innovative way of increase the value of the company.
W artykule przedstawiono korzystne czynniki wynikające z zastosowania praktyk zarządzania udogodnieniami. Autor artykułu poddał analizie mocne i słabe strony, jak i elementy środowiska‐ szanse i zagrożenia, wpływające na strategię facility management (FM). Badania przeprowadzone w ramach tego artykułu koncentrują się na tej koncepcji w ramach zarządzania nieruchomościami w przedsiębiorstwach. Omawiana koncepcja prowadzi do redukcji kosztów oraz wzrostu satysfakcji klientów. Niemniej jednak, metoda ma na celu pogodzenie nieraz sprzecznych interesów właścicieli z interesami użytkowników. Udogodnienia, należące do portfeli nieruchomościowych, wspierają podstawową działalność. W pracy ukazano i poddano dyskusji poszczególne działania w zakresie zarządzania procesami pomocniczymi. Właściwe zarządzanie nieruchomościami (budynki należą do facilities – udogodnień) stanowi innowacyjny sposób zwiększania wartości firmy.

Źródło:

Zeszyty Studenckie Wydziału Ekonomicznego „Nasze Studia”; 2017, 8; 211-220
1731-6707

Pojawia się w:

Zeszyty Studenckie Wydziału Ekonomicznego „Nasze Studia”

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 99.

Tytuł:

Zarządzanie sobą – umiejętność konieczna dla współczesnego nauczyciela

Autorzy:

Dawidziuk, Stanisław

Powiązania:

https://bibliotekanauki.pl/articles/614841.pdf

Data publikacji:

2013

Wydawca:

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

Tematy:

ability
innovation
effective management
marketing
efektywne zarządzanie
innowacja
talent
umiejętność

Opis:

In the modern world, people have unlimited possibilities to gain success in the field they choose. Technological progress, mainly the Internet, has ushered in a new era of communication betweenpeople. The world, being a global village, has become not yet a dream of people but the reality they live in. In such a world, one of the most important factors of a human existence is the way peopleuse their time. Therefore the role of one’s ability to manage oneself in every aspect of a human existence is constantly growing. The analysis of one’s expectations with the real achievements gives people important knowledge on the socio-economic needs. To gain success in the surrounding world we need to learn how to manage ourselves and how to develop, we need to do the things we are best at, keep the brain sharp and have energy and self-acceptance. Taking into account a teacher’s responsibility for the young people he/she teaches and raises, this profession is more like a mission. In the process of preparing the youth to live and function in the modern world, teachers should alsohelp them to create their own ability to manage themselves. Considering the relation between the master and student who follows his master’s steps, a contemporary teacher needs to do his/her best to know himself/herself well and to have a knowledge on managing oneself.
Współczesny świat stwarza nieograniczone możliwości osiągania sukcesów w wybranej przez siebie dziedzinie. Postęp  technologiczny, w tym Internet, zapoczątkował nową erę komunikacji międzyludzkiej. Świat jako globalna wioska stał się już nie marzeniem człowieka, lecz jego rzeczywistą codziennością. W świecie tym jednym z najważniejszych elementów funkcjonowania człowieka jest wykorzystanie czasu. Stąd coraz bardziej wzrasta rola umiejętności zarządzania sobą w każdej sferze funkcjonowania człowieka. Analiza oczekiwań z rzeczywistymi osiągnięciami danego człowieka dostarcza mu ważnej informacji o potrzebach społeczno-gospodarczych. Aby odnieść sukces w otaczającym nas świecie, należy więc nauczyć się zarządzać sobą, rozwijać się, robić to, co wychodzi nam najlepiej, zachować bystrość umysłu i energię oraz akceptację samego siebie. Nauczyciel – ze względu na odpowiedzialność za młodych ludzi, których kształci i wychowuje – wykonuje szczególny zawód, a właściwie pełni misję. Przygotowując młodych ludzi do funkcjonowania we współczesnym świecie, powinien kreować w nich tę umiejętność zarządzania sobą. Uwzględniając zasadę mistrz–uczeń, współczesny nauczyciel, chcąc służyć własnym przykładem, sam musi dążyć do mistrzostwa w zakresie poznania siebie i zarządzania sobą.

Źródło:

Annales Universitatis Mariae Curie-Skłodowska, sectio J – Paedagogia-Psychologia; 2013, 26, 1-2
0867-2040

Pojawia się w:

Annales Universitatis Mariae Curie-Skłodowska, sectio J – Paedagogia-Psychologia

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 100.

Tytuł:

Chemically Modified Cellulose Capped Zinc Oxide Nanocomposite: Spectral and Optical Properties

Autorzy:

Jagadeeswari, R.
Selvakumar, P.
Jeevanantham, V.
Saravanan, R.

Powiązania:

https://bibliotekanauki.pl/articles/2049414.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

chemically modified cellulose
hydrothermal
XRD
surface morphology
effective mass approximation

Opis:

In this study, a new chemically modified cellulose polymer-capped ZnO nanopowder prepared by hydrothermal method using chemically modified cellulose polymer as capping agent was successfully reported. The structural characteristics of CMC-capped ZnO nanopowder was reported by FTIR, XRD, SEM and EDX studies. XRD results revealed crystallographic properties like crystal composition, phase purity and crystallite size of the prepared CMC-capped ZnO nanopowder and average size calculated by Debye Scherrer formula as 14.66 nm. EDX studies revealed that the presence of elemental compositions of capping agent in the nanopowder samples. The optical characterization of the CMC-capped ZnO nanopowder was studied using UV absorption (λ max = 303 nm) and PL spectroscopy (λ ex = 295 nm). The average crystal diameter and grain size were calculated by effective mass approximation formula and compared with XRD findings that agreed well and verified CMC capped ZnO with particle size of 193 nm. Thus, the promising optical characteristics shown by the synthesized CMC capped ZnO nanopowders exposes its potential usage in bio-medical fields.

Źródło:

Archives of Metallurgy and Materials; 2021, 66, 3; 911-915
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

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