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Tytuł:
Deglaciation rate on southern and western Spitsbergen in the conditions of Arctic amplification
Autorzy:
Szafraniec, Joanna Ewa
Powiązania:
https://bibliotekanauki.pl/articles/2042121.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Svalbard
recession rate
acceleration of deglaciation rate
GIS
Źródło:
Polish Polar Research; 2018, 39, 1; 77-98
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Employment of Foreigners in Poland and the Labour Market Situation
Autorzy:
Duszczyk, Maciej
Matuszczyk, Kamil
Powiązania:
https://bibliotekanauki.pl/articles/498569.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
labour migration
Polska
unemployment rate
employment rate
economic inactivity
Opis:
Between 2014 and 2016 the number of foreigners on the Polish labour market increased by over 300 per cent. They were mainly Ukrainian citizens taking up seasonal employment on the basis of the so-called ‘simplified system’. According to the literature, such a large increase in labour immigration in a short period of time may be an important factor in the growth of unemployment and the reduction of the employment rate of natives. The main purpose of this text is to show the correlation between the increase in the employment of foreigners in Poland and to determine whether or not this has had an impact on the deterioration of the state of the labour market. For this purpose, data from the Central Statistical Office and the Polish Ministry of Family, Labour and Social Policy were collected. As a result of our analysis, it was found that the significant increase in the presence of foreigners on the Polish labour market, which the country has faced in recent years, was not correlated with the rise in unemployment, the increase in the rate of economic inactivity and the availability of seasonal jobs. On this basis, we can state that the increase in the supply of foreigners on the Polish labour market, compared to other factors influencing it, was weak enough for the negative effects of the increased employment of foreigners to not occur.
Źródło:
Central and Eastern European Migration Review; 2018, 7, 2; 53-68
2300-1682
Pojawia się w:
Central and Eastern European Migration Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Filler Surface Modification on Static and Dynamic Mechanical Responses of Rice Husk Reinforced Linear Low-Density Polyethylene Composites
Autorzy:
Omar, Mohd Firdaus
Al Bakri Abdullah, Mohd Mustafa
Ting, Sam Sung
Jeż, Bartłomiej
Nabiałek, Marcin
Md Akil, Hazizan
Zulkepli, Nik Noriman
Abd Rahim, Shayfull Zamree
Azmi, Azida
Powiązania:
https://bibliotekanauki.pl/articles/2106572.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
silane coupling agents
strain rate
universal testing machine
split Hopkinson pressure bar
strain rate sensitivity
Opis:
Filler surface modification has become an essential approach to improve the compatibility problem between natural fillers and polymer matrices. However, there is limited work that concerns on this particular effect under dynamic loading conditions. Therefore, in this study, both untreated and treated low linear density polyethylene/rice husk composites were tested under static (0.001 s-1, 0.01 s-1 and 0.1 s-1) and dynamic loading rates (650 s-1, 900 s-1 and 1100 s-1) using universal testing machine and split Hopkinson pressure bar equipment, respectively. Rice husk filler was modified using silane coupling agents at four different concentrations (1, 3, 5 and 7% weight percentage of silane) at room temperature. This surface modification was experimentally proven by Fourier transform infrared and Field emission scanning electron microscopy. Results show that strength properties, stiffness properties and yield behaviour of treated composites were higher than untreated composites. Among the treated composites, the 5% silane weight percentage composite shows the optimum mechanical properties. Besides, the rate of sensitivity of both untreated and treated composites also shows great dependency on strain rate sensitivity with increasing strain rate. On the other hand, the thermal activation volume shows contrary trend. For fracture surface analysis, the results show that the treated LLDPE/RH composites experienced less permanent deformation as compared to untreated LLDPE/RH composites. Besides, at dynamic loading, the fracture surface analysis of the treated composites showed good attachment between RH and LLDPE.
Źródło:
Archives of Metallurgy and Materials; 2022, 67, 2; 507--519
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Luminescence dating of Quaternary sediments – some practical aspects
Autorzy:
Moska, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2025218.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
luminescence dating
dose rate
equivalent dose
Opis:
Luminescence dating is based mainly on the dosimetric properties of quartz and feldspar. These minerals are among the most popular found on Earth, resulting in the possibility of using luminescence methods in practically any environment. Currently, quartz remains the best recognized mineral in terms of dosimetric properties, particularly with regards to results obtained for quartz grains, which are regarded as being the most reliable in luminescence dating. Supporters of luminescence methods are constantly growing, however, these groups do not always have sufficient knowledge to avoid even the most basic of issues that may be encountered overall – from the process of sampling through to the awareness of what a single luminescence result represents. The present paper provides an overview of several practical aspects of luminescence dating such as correct sampling procedures and all necessary information regarding the calculation of the dose rate and equivalent dose with particular reference to potential problems that occur when the age of the sample is being determined. All these aspects are crucial for obtaining a reliable dating result, on the other hand, they remain a potential source of uncertainty.
Źródło:
Studia Quaternaria; 2019, 36; 161-169
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Corrosion Rate of FeMn-Si Biodegradable Material
Autorzy:
Roman, Ana-Maria
Chelariu, Romeu
Cimpoesu, Ramona
Stirbu, Ioan
Ionita, Iulian
Cazacu, Marius Mihai
Prisecariu, Bogdan Anton
Cimpoesu, Nicanor
Pietrusiewicz, Paweł
Sodor, Alina
Powiązania:
https://bibliotekanauki.pl/articles/2174554.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biodegradable
Fe-Mn alloy
degradation rate
Opis:
The Fe-based alloy with manganese led to the appearance of new austenitic alloys, with the antiferromagnetic property pursued, resulting in compatibility with the magnetic field as that of magnetic resonance imaging. The corrosion resistance behavior of the biodegradable Fe-Mn-Si alloy was analyzed in a thermostatic chamber at 37±1°C for 24, 48 and 72 hours by immersing in Ringer solution. Also, the cast and laminated samples were subjected to electro-corrosion tests using a potentiostat equipment. Linear and cyclic potentiometry is presented for characterize the corrosion behavior of the experimental samples in electrolyte. Due to the interaction between the alloy and the liquid medium a change in the solution pH was observed. Structure analysis and chemical composition details of the surfaces were obtained using electron scanning microscopy (SEM) and X-ray energy dispersive spectroscopy (EDS).
Źródło:
Archives of Metallurgy and Materials; 2022, 67, 4; 1243--1250
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Life assessment of marine ethylene propylene rubber power cables based on hardness retention rate
Autorzy:
Meng, X.
Wang, Z.
Li, G.
Powiązania:
https://bibliotekanauki.pl/articles/141470.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ethylene propylene rubber (EPR)
nondestructive
hardness retention rate
elongation at break retention rate (EAB %)
termination index
Opis:
The lifetime of ethylene propylene rubber (EPR) insulated cables will decrease because of complex aging processes. From the safety perspective, insulation condition assessment of the cable is essential to maintain an efficient and reliable operation. As a nondestructive and online evaluation method, a hardness retention rate was used to estimate the lifetime of cable. First, accelerated thermal aging tests in the laboratory were performed to measure the elongation at break retention rate (EAB%) and a hardness retention rate at different temperatures. Second, the aging values were processed by the Arrhenius equation and time temperature superposition to assess aging lifetime of insulation at different temperatures and end levels. As the insulation condition assessment of the cable by hardness retention test has no approved standard, the EAB% data were correlated with hardness retention to provide an evaluation basis. The results show that when EAB% picks out the time corresponding to a certain amount of 50% degradation, 10% of hardness retention was chosen as the termination index.
Źródło:
Archives of Electrical Engineering; 2017, 66, 3; 475-484
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Systemy kursów walutowych krajów Europy Środkowo-Wschodniej oraz zmienność kursów ich walut względem euro
Exchange Rate Regimes of Central and Eastern European Countries and the Exchange Rate Volatility of Their Currencies Against the Euro
Системы валютных курсов стран Центральной и Восточной Европы и изменчивость курсов этих валют по отношению к еврo
Autorzy:
Jurek, Michał
Powiązania:
https://bibliotekanauki.pl/articles/1009311.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cee countries
exchange rate regimes
exchange rate
страны центральной и восточной европы
истемы валютных курсов
валютный курс
Opis:
The article aims to analyze what macroeconomic circumstances support the maintenance of stable exchange rate of CEE countries currencies against the euro. In order to achieve this target, the author presents the evolution of the exchange rate regimes in CEE countries in the period of 1999-2011, as well as the results of logit analysis used in order to reveal what macroeconomic features favour the stabilization of euro exchange rates. The study reveals that the plausibility of keeping the stable exchange rate tends to be higher in countries characterized with small size of economy, tough fiscal policy, and low relation of the foreign capital inflow (including direct and portfolio investments as well as other investments), to official foreign reserves. These CEE countries that maintain stable exchange rate against the euro are also marked by a higher current account deficit as compared with the countries which do not stabilize the exchange rate. This is the result of the real appreciation of their currencies, which implies worsening of the competitiveness of their exports. Under such circumstances the stabilization of the exchange rate may require keeping the reference interest rates at high level. This means that the real sector of the economy is burdened with all the consequences of economic shocks. This in turn can be conducive to prolonged and repeating recessions.
В статье делается попытка оценить, какие макроэкономические условия должны быть выполнены для сохранения стабильного курса национальной валюты по отношению к евро в странах Центральной и Восточной Европы. Автором проведен анализ эволюции систем валютных курсов, применяемых в этих странах в 1999–2011 гг. На основании логит-анализа показано, в каких макроэкономических условиях происходит стабилизация курса их валют по отношению к евро. Анализ позволяет констатировать, что вероятность сохранения стабильного курса выше в странах, которые характеризуются малым размером экономики, дисциплиной в фискальной политике и относительно низким уровнем иностранных капиталовложений в виде прямых и портфельных инвестиций, а также остальных инвестиций, по отношению к официальным валютным резервам. Те страны Центральной и Восточной Европы, которые сохраняют стабильный курс валюты по отношению к евро, отличаются также, в большинстве случаев, более высоким дефицитом баланса текущих оборотов по сравнению с другими странами этого региона с нестабильным валютным курсом. Это является результатом реальной ревальвации их валют, ведущей к ухудшению конкурентоспособности экспорта. В таких условиях стабилизация валютного курса может потребовать сохранения референтных процентных ставок на высоком уровне. Это означает, что весь груз экономического шока перебрасывается на реальную сферу, что может стать причиной продолжительных и повторяющихся рецессий.
Źródło:
Ekonomista; 2013, 2; 221-245
0013-3205
2299-6184
Pojawia się w:
Ekonomista
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kinetics and Mechanism of the Redox Reaction Between Pt(IV) Complex Ions and Sodium Thiosulfate in Aqueous Solution. Part II: Neutral and Alkaline Solution
Kinetyka i mechanizm reakcji redoks pomiędzy jonami kompleksowymi Pt(IV) i tiosiarczanem sodu w roztworze wodnym. Część II: Roztwór obojętny i zasadowy
Autorzy:
Pacławski, K.
Piwowońska, J.
Powiązania:
https://bibliotekanauki.pl/articles/354028.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
platinum complexes
thiosulfate
redox reaction
kinetics
rate law
rate constant
jony kompleksowe
tiosiarczan
reakcja redoks
stała szybkości
Opis:
In this work, spectrophotometric studies on the kinetics and mechanism of the reaction between [PtCl6]2- complex ions and sodium thiosulfate, in neutral (pH = 7) and alkaline (p = 12) solution, were carried out. Applying different conditions, the influence of initial concentrations of reductant and platinum(IV) complex ions as well as the influence of temperature and ionic strength on the rate constant, was experimentally determined. From the obtained results, the molecularity, the order and the value of enthalpy and entropy of activation of the reaction, were experimentally determined. It was found that in both cases the reduction reaction is relatively slow and in the studied conditions the second-order rate constant changes from 2.92 : 10-2 to 0.40 M-1:s-1 at pH = 7, and from 3.84 : 10-2 to 1.55 M-1s-1 at pH = 12. Additionally, depending on the pH, different mechanism of the reaction is present. However, regardless on the studied system the only platinum(II) chloride complex ions are the final product of the redox reaction.
W pracy, przedstawiono wyniki badań spektrofotometrycznych nad kinetyką i mechanizmem reakcji pomiędzy jonami kompleksowymi [PtCl6]2- i tiosiarczanem sodu, w roztworze obojętnym (pH = 7) i zasadowym (pH = 12). Stosując różne warunki doświadczalne, wyznaczono wpływ stężenia początkowego reduktora oraz stężenia jonów kompleksowych platyny(IV), jak również wpływ temperatury oraz siły jonowej na wartość stałej szybkości reakcji. Na podstawie otrzymanych danych, wyznaczono cząsteczkowość, rząd oraz entalpie i entropie reakcji. Wykazano, że w obydwu przypadkach reakcja redukcji jest stosunkowo wolna. W badanych warunkach wartość drugorzędowej stałej szybkości reakcji ulega zmianie od 2.92· 10-2 do 0.40 M-1:s-1 w roztworze o pH = 7, oraz z 3.84 · 10-2 do 1.55 M-1s-1w roztworze o pH = 12. Dodatkowo, w zależności od pH roztworu, ulega zmianie mechanizm badanej reakcji. Jednakże, bez względu na zastosowane warunki pH, produktem końcowym jest zawsze chlorkowy kompleks platyny(II).
Źródło:
Archives of Metallurgy and Materials; 2014, 59, 4; 1421-1426
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sampling Rate Impact on the Tuning of PID Controller Parameters
Autorzy:
Laskawski, M.
Wcislik, M.
Powiązania:
https://bibliotekanauki.pl/articles/226068.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
PID controllers
tuning
optimal control
sampling rate
Opis:
The paper deals with an analysis of automatic control system with continuous and discrete PID controllers. A method of tuning the parameters of the continuous controller is presented, which is optimal according to the ITAE criterion. The behavior of control systems with discrete controllers whose parameters were tuned using the mentioned method are described. The impact of changes in the sampling period of controlled signal on the control quality is shown. Changes of the values of optimal parameters of discrete PID controllers in relation to changes of the sampling rate of controlled signal are characterized.
Źródło:
International Journal of Electronics and Telecommunications; 2016, 62, 1; 43-48
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
KFOA: K-mean Clustering, Firefly Based Data Rate Optimization and ACO Routing for Congestion Control in WSN
Autorzy:
Jadhav, Savita Sandeep
Jadhav, Sangeeta
Powiązania:
https://bibliotekanauki.pl/articles/2200678.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
congestion control
WSN
rate optimization
clustering
routing
Opis:
Wireless sensor network (WSN) is assortment of sensor nodes proficient in environmental information sensing, refining it and transmitting it to base station in sovereign manner. The minute sensors communicate themselves to sense and monitor the environment. The main challenges are limited power, short communication range, low bandwidth and limited processing. The power source of these sensor nodes are the main hurdle in design of energy efficient network. The main objective of the proposed clustering and data transmission algorithm is to augment network performance by using swarm intelligence approach. This technique is based on K-mean based clustering, data rate optimization using firefly optimization algorithm and Ant colony optimization based data forwarding. The KFOA is divided in three parts: (1) Clustering of sensor nodes using K-mean technique and (2) data rate optimization for controlling congestion and (3) using shortest path for data transmission based on Ant colony optimization (ACO) technique. The performance is analyzed based on two scenarios as with rate optimization and without rate optimization. The first scenario consists of two operations as k-mean clustering and ACO based routing. The second scenario consists of three operations as mentioned in KFOA. The performance is evaluated in terms of throughput, packet delivery ratio, energy dissipation and residual energy analysis. The simulation results show improvement in performance by using with rate optimization technique.
Źródło:
International Journal of Electronics and Telecommunications; 2022, 68, 4; 659--665
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the use of sediment traps in sedimentation measurements in glaciated fjords
Autorzy:
Zajączkowski, Marek
Powiązania:
https://bibliotekanauki.pl/articles/2052122.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
rate of sedimentation
sediment traps
resuspension
flocculation
Źródło:
Polish Polar Research; 2002, 23, 2; 161-174
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Age and growth rate of Pseudochaenichthys georgianus Norman, 1937 (family Chaenichthyidae) of the South Georgia region
Autorzy:
Chojnacki, Juliusz
Palczewski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2058036.pdf
Data publikacji:
1981
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Pseudochaenichthys georgianus
age
growth rate
South Georgia
Źródło:
Polish Polar Research; 1981, 2, 3-4; 145-157
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wavelet-based Entropy Measure for Rate-Distortion Optimization in Image Coding
Autorzy:
Garcia-Alvarez, J.
Führ, H.
Castellanos-Dominguez, G.
Powiązania:
https://bibliotekanauki.pl/articles/226142.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
entropy
wavelet transform
information measure
rate distortion
Opis:
A novel method for calculation of the entropy measure in wavelet space is proposed. This perceived-based entropy measure uses a Second Order Model entropy estimator, in which the occurrence of neighbors is considered in formulation. It has the intention to allow the implementation of a more suitable measure in coding processes and a relationship between the metric and the description of perceptual features. This method is used for the Rate-Distortion optimization in order to improve the bit-allocation coding algorithm, demonstrating that the wavelet-based entropy estimates a truncation step close to the target rate. The hypothesis is founded in the effect of distortion on the coefficient allocation. Because entropy measure is a close approximation of the conditional probability of image in multiresolution space, it provides an adequate representation for the information of a Detail feature. A definition of Detail-based homogeneity variance criteria is used for the information quantity - wavelet representation space, in order to find the image that fits a given Quality Level criteria. Experimental results are obtained for artificial and natural databases.
Źródło:
International Journal of Electronics and Telecommunications; 2010, 56, 1; 25-31
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kinetics and Mechanism of the Redox Reaction Between Pt(IV) Chloride Complex Ions and Sodium Thiosulfate in Aqueous Solution. Part I: Acidic Solution
Kinetyka i mechanizm reakcji redox pomiędzy chlorkowymi jonami kompleksowymi Pt(Iv) i tiosiarczanem sodu w roztworach wodnych. Część I: Roztwór kwaśny
Autorzy:
Pacławski, K.
Piwowońska, J.
Powiązania:
https://bibliotekanauki.pl/articles/351888.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
thiosulfate
platinum complexes
redox reaction
kinetics
rate law
rate constant
jony kompleksowe
tiosiarczan
reakcja redoks
kinetyka
stała szybkości
Opis:
In this work, spectrophotometric studies of the kinetics and mechanism of reaction between [PtCl4]2- complex ions and sodium thiosulfate, were carried out. The influence of different conditions, such as: initial concentrations of reductant and platinum(IV) complex ions, ionic strength, pH and temperature on the rate constant, was experimentally determined. From the obtained results, the molecularity of the first elementary step, value of the enthalpy and entropy of activation in Eyring equation as well as corresponding rate equation, were experimentally determined. It was found that the reaction is relatively slow and leads to the S, Pt and PtS colloids formation. The best conditions for solid phase formation containing Pt are at pH = 5.
W pracy przedstawiono wyniki badań spektrofotometrycznych kinetyki i mechanizmu reakcji jonów kompleksowych [PtCl4]2- z tiosiarczanem sodu. Doświadczalnie określono wpływ różnych czynników na stałą szybkości reakcji, tj.: stężenia początkowego reagentów, siły jonowej, pH oraz temperatury. Na podstawie otrzymanych wyników wyznaczono cząsteczkowość pierwszego etapu elementarnego reakcji, wartości entalpii i entropii aktywacji reakcji oraz równanie kinetyczne. Wykazano, że reakcja jest stosunkowo wolna i prowadzi do powstania koloidu złożonego z siarki, platyny oraz siarczku platyny (PtS). Najlepsze warunki do wytrącania koloidu zawierającego Pt to pH = 5.
Źródło:
Archives of Metallurgy and Materials; 2014, 59, 4; 1413-1420
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling Fuel Prices. An I(1) Analysis
Autorzy:
Leszkiewicz-Kędzior, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/483269.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fuel prices
real exchange rate
CHEER model
cointegration
Opis:
This article analyses fuel pricing in Poland in the period January 2000 - March 2011. Two levels of prices are considered: wholesale prices set by Polish refineries and retail prices paid at petrol stations. Because refinery product prices are strongly dependent on the zloty exchange rate, a large part of the article deals with the modelling of the PLN/EUR exchange rate, in which process a CHEER model is used. The multivariate cointegration analysis showed that the wholesale and retail prices of fuels and the exchange rate are linked through long-run relationships. As demonstrated, the wholesale price of fuel depends on the crude-oil price and the PLN/EUR exchange rate. Another finding is that changes in the wholesale price are fully transmitted to retail prices. As far as the exchange rate is concerned, the real interest rate parity hypothesis has been confirmed, as well as the significance of the risk as perceived by financial investors.
Źródło:
Central European Journal of Economic Modelling and Econometrics; 2011, 3, 2; 75-95
2080-0886
2080-119X
Pojawia się w:
Central European Journal of Economic Modelling and Econometrics
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 180

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