Wyniki wyszukiwania - Biblioteka Nauki

1

Solution to the equations of the moment expansions

100%

Amore P. , Fernández F.

Open Physics

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2013

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tom 11

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nr 2

195-205

EN

We develop a formula for matching a Taylor series about the origin and an asymptotic exponential expansion for large values of the coordinate. We test it on the expansion of the generating functions for the moments and connected moments of the Hamiltonian operator. In the former case the formula produces the energies and overlaps for the Rayleigh-Ritz method in the Krylov space. We choose the harmonic oscillator and a strongly anharmonic oscillator as illustrative examples for numerical test. Our results reveal some features of the connected-moments expansion that were overlooked in earlier studies and applications of the approach.

2

Reportaż „skonwergowany”. Dzienniki kołymskie J. Hugo-Badera jako hybryda medialna

100%

Frukacz K.

Postscriptum Polonistyczne

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2014

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nr 2(14)

139-153

EN

The article analyses the relation between the process of media convergence and hybridization of contemporary reportage. The integration of old and new media in a single journalistic report of hybrid character is being analysed here. The author presents this phenomenon using Dzienniki kołymskie by J. Hugo-Bader as an example. It is a work which oscillates between travel diary and travel reportage, it was first published in sections on an Internet press portal. Additionally, the specific character of multimedia journalism and the poetics of digital reportages are commented on in the article.

3

The Contribution of Foreign Direct Investments to the Convergence of Regions in the Czech Republic

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Hašková S. , Volf P.

Littera Scripta

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2017

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tom 2

23-33

EN

The debate about the economic impact of multinational firms on a host country has been taking place for many years. Part of this discussion involves the effect of foreign direct investment (FDI) on the unemployment rate and economic growth. Analysis of FDI development, unemployment rate and the real domestic product (GDP) was carried out within the regions of the Czech Republic over the last decade. Comparative method and correlation analysis was applied to investigate the degree of dependence between the FDI level and the convergence of the poorer regions towards the more developed ones in terms of the examined characteristics. Results of the comparative analysis indicate that the effect of FDI on unemployment and GDP is insignificant. Statistical dependence between foreign investment inflow and economic growth has not been demonstrated; neither has the correlation between FDI and unemployment been proved. Insensitivity of the monitored variables on FDI development can be regarded as a serious problem for the “effectiveness” of this type of incentive policy.

4

Sektorowa dekompozycja wzrostu wydajności pracy w krajach Unii Europejskiej

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Grodzicki M. , Katedra Ekonomii Matematycznej Instytutu Ekonomii i Zarządzania U. J.

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tom 1(34)

EN

In the paper the results of the shift-share decomposition analysis of labour productivity growth in the European Union in 19970–2007 were presented. Making use of data from the EU-KLEMS and the GGDC Productivity Database, the role of productivity growth in 5 major economic sectors and of the employment shifts between these sectors for total productivity growth were analysed. Then, using the nonparametric method (LOWESS) dominant development patterns were distinguished. It was demonstrated that nearly 90% of productivity growth in the sample can be accounted to within effects and about 11% – to changes in employment structure. Employment shifts had on average a direction into more productive sectors, but also to less dynamic ones. Industry and services had the biggest contribution to productivity growth, on all development levels. Productivity dynamics is the highest on the lower development level of the economy. With development, it is becoming more and more difficult to enhance productivity – either by within effects or by changes in employment structure.

PL

W artykule zostały zaprezentowane wyniki analiz wzrostu wydajności pracy w 14 krajach Unii Europejskiej w latach 1970–2007, wykonanych techniką dekompozycji sektorowej shift-share. Przy wykorzystaniu danych z baz EU-KLEMS i GGDC Productivity Database zbadano rolę zmian wydajności pracy w 5 sektorach gospodarki oraz przesunięć w zatrudnieniu pomiędzy tymi sektorami dla dynamiki wydajności na całym obszarze gospodarczym. Następnie przy wykorzystaniu metody nieparametrycznej (ważonej regresji lokalnej) zostały wyszczególnione dominujące wzorce rozwojowe. Okazuje się, że średnio blisko 90% wzrostu wydajności pracy w badanej próbie można przypisać wewnątrzsektorowej dynamice wydajności, a ok. 11% zmianom w strukturze zatrudnienia. Przesunięcia pracowników przebiegały zazwyczaj w kierunku sektorów o wyższej wydajności, lecz o niższej stopie wzrostu tej zmiennej. Największy wkład do wzrostu wydajności, na każdym poziomie rozwoju gospodarczego, mają sektory przemysłu i usług rynkowych. Dynamika wydajności jest najwyższa na niskim poziomie rozwoju, a wraz z jej wzrostem coraz trudniejsze staje się odnoszenie korzyści – zarówno wewnątrzsektorowych, jak i tych wynikających ze zmian w strukturze zatrudnienia.

5

Polityka Unii Europejskiej wobec regionów o niższym poziomie rozwoju społeczno-gospodarczego

100%

Kabat-Rudnicka D.

Zeszyty Naukowe Uniwersytetu Ekonomicznego w Krakowie

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2011

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nr 869

27-41

EN

The EU’s regional policy, especially the financial assistance directed to less socially and economically developed regions in an enlarged and diversified Union of 27 member states, is a problem of both scientific and practical importance. The article focuses on theoretical foundations including the theory of regional convergence and divergence and strategy for endogenous development. It then goes on to provide critical views which have raised doubts about the effectiveness of external assistance. In this context, the EU’s programmes directed towards the development of less developed regions are very important. The author concludes that the financial assistance directed towards less developed countries and regions is legitimised and even necessary. Taking into account its scope and the scale of needs, the primary source of financial assistance should be EU funds and also the countries themselves. If greater convergence between rich and poor regions is to be achieved, a strategy for endogenous development is also needed.

6

Transformacja prasy w erze mediów cyfrowych. Studium przypadku Gazeta Wyborcza

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Różycka M.

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nr 3

111-127

EN

Achieved in recent years the sales of national dailies shows that publishers must constantly compete within daily newspapers market, as well as they need to take actions that will be the answer to substitute products, especially television and the Internet. This leads to the blurring of the boundaries between the media - leading to their convergence. Media convergence forces press publishers strategies , not only in their development, but also to survive in a competitive market. It is appropriate in these circumstances making activities that will strengthen the position of the publishing market . The purpose of this publication is to analyze the aspect of the transformation of the press in the digital environment - the introduction of charges for the available content on the Internet , and an indication that this phenomenon also applies to the local newspaper market . Exemplification of the foregoing is Gazeta Wyborcza

7

The world economy in the XXI c.: will the XX c. trends persist?

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Gomułka S.

Nauka

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2017

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nr 1

PL

The paper proposes a list of five „stylized facts”, regarded as the main trends with respect to the development of the global economy in the 20th c. The author’s main purpose is to answer the question whether, in the light of the contemporary growth theory and demographic forecasts, these trends are likely to continue unchanged also in the 21st c. Taking into account this theory and those forecasts, the paper offers forecasts of the average GDP per capita for both the countries of the Technology Frontier Area (TFA) and the catching-up countries. By these forecasts, the strong divergence trend of the last two centuries will be replaced by a strong convergence trend during the 21st c. Moreover, the global rate of growth of the per capita GDP will continue to be high in the first half of the current century, but strongly declining in the second half.

8

Convergence or Divergence? Multidimensional Analysis of Regional Development in the New European Union Member States

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Jakubowski A.

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2018

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nr 1(51)

31-40

EN

The main aim of the paper is the multidimensional analysis of regional development in the new EU Member States in the years 2004–2014 on the background of EU regions and characterisation of the differences in their dynamics with the use of a synthetic index. The article presents an attempt to adopt a method of taxonomic measure of socio-economic development for multidimensional comparative analysis of development processes in a dynamic approach and to develop a synthetic measure reflecting the multifaceted nature of development processes and cohesion policy. The developed indicator (Regional Development Index) was used to determine the directions and paces of processes leading to the reduction of disparities in the level of regional development (beta- and sigma-convergence).

PL

Głównym celem artykułu jest wielowymiarowa analiza rozwoju regionalnego w tzw. nowych państwach członkowskich Unii Europejskiej w latach 2004–2014 na tle regionów UE oraz scharakteryzowanie różnic w zakresie jego dynamiki za pomocą autorskiego miernika syntetycznego. W artykule zaprezentowano próbę adaptacji metody taksonomicznego miernika rozwoju społeczno-gospodarczego dla celów wielowymiarowej analizy porównawczej procesów rozwojowych w ujęciu dynamicznym oraz wypracowania wskaźnika syntetycznego ukazującego wielopłaszczyznowy charakter procesów rozwojowych i polityki spójności. Opracowany wskaźnik (Regional Development Index) został wykorzystany do określenia kierunków i tempa procesów prowadzących do zmniejszania dysproporcji w poziomie rozwoju regionalnego w zakresie beta oraz sigma konwergencji.

9

On the matrix form of Kronecker lemma

100%

da Silva J. , Oliveira A.

Discussiones Mathematicae Probability and Statistics

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2009

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tom 29

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nr 2

233-243

EN

A matrix generalization of Kronecker's lemma is presented with assumptions that make it possible not only the unboundedness of the condition number considered by Anderson and Moore (1976) but also other sequences of real matrices, not necessarily monotone increasing, symmetric and nonnegative definite. A useful matrix decomposition and a well-known equivalent result about convergent series are used in this generalization.

10

Bipolar growth model with investment flows

100%

Katarzyna F. , Tomasz M. , Tomasz T.

Economics and Business Review

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2016

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tom 2(16)

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nr 3

32-56

EN

The aim of the present study is to design a bipolar model of economic growth with investment flows between two types of economies (conventionally referred to as relatively rich economies and relatively poor economies). Therefore in the following considerations it is assumed that the process of capital accumulation depends on investments undertaken in the economy. At the same time the Solow growth model takes into account only investments financed by domestic savings, whereas in the bipolar growth model also the investment flows between rich and poor economies are considered. It is assumed that both relatively rich economies are investing in the relatively poor economies and the poor economies make investments in the rich economies. The paper analyses the long-term equilibrium of the growth model, both in terms of existence of steady states of the system of differential equations and in terms of the stability of a non-trivial steady state. What is more economic characteristics of the point of the long-term equilibrium of the model are examined, model parameters are calibrated and growth paths of basic macroeconomic variables in selected variants of numerical simulations are presented.

11

Finite difference scheme for the time-space fractional diffusion equations

100%

Cao J. , Li C.

Open Physics

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2013

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tom 11

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nr 10

1440-1456

EN

In this paper, we derive two novel finite difference schemes for two types of time-space fractional diffusion equations by adopting weighted and shifted Grünwald operator, which is used to approximate the Riemann-Liouville fractional derivative to the second order accuracy. The stability and convergence of the schemes are analyzed via mathematical induction. Moreover, the illustrative numerical examples are carried out to verify the accuracy and effectiveness of the schemes.

12

Convergence and divergence processes in regional development

100%

Burnasov A. , Ilyushkina M. , Kovalev Y. , Stepanov A.

Prace Komisji Geografii Przemysłu Polskiego Towarzystwa Geograficznego

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2014

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tom 26

25-30

EN

The article deals with the basic trends of regions in the context of globalization and regionalizationof the world’s economy. The most important factors of regional development today are theinnovation resource areas, their institutional environment, political regimes as well as regional policy,and geographical and socio-demographic factors.

13

„Wideo na żądanie”, czyli jak telewizje walczą o widza w sieci.

100%

Oleszkowicz M.

Państwo i Społeczeństwo

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2015

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nr 1

139-156

EN

Has the world stopped spinning around a glass screen? Has traditional television been losing its unwavering positions over the years? New technologies specialists argue that video network endangers television. However, for 17 years, the time the average Pole spends in front of the TV has remained almost the same. As can be seen from the annual „Information about the problems of broadcasting”, prepared by the Office of Strategy in the National Broadcasting Council of Poland (KRRiT) in 2013, Poles watch television for an average of 4 hours and 7 minutes a day. TV still has its loyal audience, but it has to compete in fighting for viewers’ attention. The increasing availability of mobile devices and broadband internet access resulted in necessity of dealing with the changes in the use of media and the change in the needs and preferences of viewers. „Big Three” of broadcasters in response to recorded in recent years decline in the television market is taking action. One of these activities is to fight for the viewer in the network, through online platforms operated based on video on demand service – vod. In my article I will show to what extent the three major broadcasters in Poland use the content delivery network. The fact that theirs productions are distributed in the network is unquestionable. It is worth to consider the extent of this phenomenon. The article analyzes the internet video services: vod.tvp.pl, IPLA, TVN Player owned in sequence by TVP, TV Polsat and TVN.

14

Nowe oblicze komunikacji. Wybrane aspekty prawne i etyczne rozpowszechniania treści w cyberprzestrzeni

100%

Różycka M.

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nr 2

107–120

EN

It can be regarded as we have a problem with the application of its provisions to the content present in the network in terms of law because regulations on media infiltrate boundaries – so, and the media themselves. Polish law is not adapted to the changing technology reality. And it is not only the universal use of social media. Traditional media also taking into account the convergence process are present in the network. The purpose of this publication is to analyze certain aspects of legal regulations concerning the distribution of content in cyberspace – on the basis of the law in Poland the media. To demonstrate that self-regulation in the area of electronic media has the great advantage that it can go in a relatively short distance for the development of “new” media. In contrast, new, precise regulations in the matter of electronic media are difficult to be implemented in a short time.

15

Wage Flexibility across EMU Members: How Endogenous is the Currency Union?

100%

Buscher H. , Gabrisch H.

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tom 241

EN

Abstract. The authors test whether the introduction of a common currency and the single monetary policy in the European Monetary Union might have increased the need for nominal wage flexibility. They try to find out whether wage dynamics between euro member countries became more synchronized through the adoption of the common currency. They run a model of endogenously induced changes of bilateral correlation coefficients of wage dynamics, where trade intensity, sector specialization and financial integration are assumed to be the driving forces for endogeneity on the labor markets. They use a panel data structure to allow for cross-section weights for country-pair observations. Regressions are with instrument variables in order to disentangle exogenous from endogenous influences. They apply these techniques to the dynamics of nominal wages, real wages and unit labor costs. They find evidence of persistent asymmetries in nominal wage formation, despite a single currency and monetary policy, which is responsible for diverging unit labor costs and emerging trade imbalances among the EMU member countries.

16

Rate of convergence on Baskakov-Szasz type operators

100%

Gupta P. , Gupta V.

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2001

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tom Nr 31

37-44

EN

In the present article, we obtain a direct in simultaneous approximation for the linear combination of Baskakov-Szasz type operators in terms of higher order modulus of continuity.

17

Convergence and periodic properties of solutions for a class of delay difference equation

100%

Zhu H. , Huang L.

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2007

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tom Nr 37

121-128

EN

We propose a class of delay difference equation with piecewise constant nonlinearity. The convergence of solutions and the existence of globally asymptotically stable periodic solutions are investigated for such a class of difference equation.

18

Model Checking Optimisation Based Congestion Control Algorithms

100%

Lomuscio A. , Strulo B. , Walker N. G. , Wu P.

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2010

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tom Vol. 102, nr 1

77-96

EN

Model checking has been widely applied to the verification of network protocols. Alternatively, optimisation based approaches have been proposed to reason about the large scale dynamics of networks, particularly with regard to congestion and rate control protocols such as TCP. This paper intends to provide a first bridge and explore synergies between these two approaches. We consider a series of discrete approximations to the optimisation based congestion control algorithms. Then we use branching time temporal logic to specify formally the convergence criteria for the system dynamics and present results from implementing these algorithms on a state-of-the-art model checker. We report on our experiences in using the abstraction of model checking to capture features of the continuous dynamics typical of optimisation based approaches.

19

Convergence of a finite difference scheme for von Foerster equation with functional dependence

100%

Zwierkowski P.

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2012

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tom Vol. 45, nr 3

725-737

EN

We analyse a finite difference scheme for von Foerster-McKendrick type equations with functional dependence forward in time and backward with respect to one dimensional spatial variable. Some properties of solutions of a scheme are given. Convergence of a finite difference scheme is proved. The presented theory is illustrated by a numerical example.

20

A study on fractal dimensions and convergence in fuzzy control systems

100%

Schuster A. , Blackburn W. , Prieto M. S.

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2002

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tom nr 3

30-36

EN

This paper addresses a problem in the area of intelligent, knowledge-based systems, namely the generation of knowledge, by presenting a proposal for the automation of this task. The proposed approach is limited however by focusing on fuzzy control systems (FCSs). Results obtained from different experimental investigations indicate the potential of the approach.