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Temat: Estimator ; Risk
Semivariance is an intuitive risk measure because it concentrates on the shortfall below a target and not on total variation. To successfully use semivariance in practice, however, a statistical estimator of semivariance is needed; Josephy and Aczel provide such an estimator. Unfortunately, they have not correctly proven asymptotic unbiasedness and mean squared error consistency of their estimator since their proof contains a mistake. This paper corrects the computational mistake in Josephy-Aczel’s original proof and, that way, allows researchers and practitioners in the field of downside portfolio selection, hedging, downside asset pricing, risk measurement in a regulatory context, and performance measurement to work with a meaningfully specified downside measure.
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Temat: Insurance ; Finanse ; Risk
The collection of essays published in the current issue of Finance Sciences includes articles referring to the area of insurance, financial markets and banking. The subject of insurance has been richly represented. It includes the papers by Anna Gierusz and Robert Dankiewicz. The paper written by Agnieszka Pobłocka and Ewa Spigarska concentrates also on insurance issues. The problem of risk in the area of banking is presented by Almir Alihodžić. Various aspects of the financial market are interpreted by Magdalena Broszkiewicz, and also by Bogumiła Brycz and Katarzyna Włodarczyk. The paper by Stanisław Wanat and Ryszard Konieczny shows the possibilities of using quantitative methods to solve financial problems.
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The business environment is not quiet any more, in almost every field some threats appear. This can also be seen in the contents of this issue of Financial Sciences. In each of the five articles presented here, the problem of risk management is touched upon, either explicitly or implicitly, like in the paper by Marszk, where the complexity of innovative financial products is also perceived as a risk factor. The dividend smoothing described by Gostkowska-Drzewicka and Majerowska is in turn a kind of tool to minimise risk. So the accent is nowadays on keeping stability rather than on looking for new opportunities. This is clearly reflected in the topics that have drawn the attention of our authors. Though not very optimistic, I do hope that their work published in this issue will be of interest to our readers. Ewa Bogacka-Kisiel
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In the modern world, where information and knowledge are key resources, the process of computerization is the basis for the development of societies within modern forms of management. This is related to the dynamic development of technologies that enable rapid information transfer and data analysis. Computerization also influences the economic dimension of sustainable development – on a macro scale, it increases the rate of economic growth by improving the efficiency of the economy; on the level of enterprises, it facilitates the management of customer relations and shortens the time of information flow, supports decision-making and provides the opportunity to increase the range of activities. Moreover, enterprises can control their information processes, which significantly improves their functioning, becoming an element of broadly understood competitiveness. In this issue of Business Informatics very interesting works were presented by both young researchers and experienced academics. They familiarize the reader with the processes of computerization occurring in the business and their environment in a comprehensive way. The topics presented cover the scope of management engineering and include the development, modification, implementation and maintenance of effective technical and organizational solutions using interdisciplinary knowledge, including information and communication technologies. The authors analyse both original and current problems. The observation and conclusion from all the presented articles is that the use of modern information and communication solutions is possible by correlating the computerization strategy with the development strategies of the organization as a whole.
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Eight articles are published in the fifty-seventh issue of the journal “Econometrics”. The first article, by Marek Walesiak, covers many aspects of the application of multidimensional scaling, especially to study changes in the level of social cohesion of the Lower Silesia region in the period 2005-2015. Justyna Brzezińska presents the visual technics for categorical data in R. The comparison of dichotomous IRT models based on continuous and discrete latent trait with applications in the study of Polish households’ saving skills is the subject of the article by Ewa Genge. The article by Adam Sagan, Aneta Rybicka and Justyna Brzezińska concerns IRT-based conjoint analysis in the optimization of banking products. Bartłomiej Jefmański, in his article, draws attention to the sensitivity of the SERVQUAL score to the choice of the fuzzy conversion scale. A further paper, by Justyna Kulik, covers the problems of technical efficiency and the methods of its measurement. The authors of the next paper, Wiesław Dębski, Ewa Feder-Sempach and Szymon Wójcik, examined the statistical properties of rates of return of the companies listed on the Warsaw Stock Exchange. The last paper, by Dominik Krężołek, concerns the use of Value-at-Risk methodology in the assessment of investor’s risk attitudes on the precious metals market. Agnieszka Stanimir Subject Editor
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Human Movement jest czasopismem naukowym wydawanym wspólnie przez Akademię Wychowania Fizycznego we Wrocławiu, Akademię Wychowania Fizycznego im. Eugeniusza Piaseckiego w Poznaniu oraz Akademię Wychowania Fizycznego im. Bronisława Czecha w Krakowie. Pismo prezentuje poglądy z wszystkich dziedzin nauki zajmujących się człowiekiem w ruchu w szerokim znaczeniu, zarówno biologicznym, jak i humanistycznym. Od roku 2011 czasopismo ukazuje się cztery razy w roku. W punktacji MNiSW czasopismo otrzymało 9 pkt oraz 5,92 pkt w Index Copernicus (2010). Periodyk znajduje się w bazach danych: SPORTDiscus, Index Copernicus, Sponet, Altis, SCOPUS oraz CAB Abstracts i Global Health.
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Anglojęzyczne czasopismo naukowe wydawane przez Uniwersytet Ekonomiczny we Wrocławiu od 1995 roku. Publikowane są w nim artykuły o tematyce ekonomicznej, z dziedzin zarządzanie i finanse, recenzje książek i streszczenia monografii publikowanych przez Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu oraz wykłady inauguracyjne. Czasopismo ukazuje się dwa razy w roku.
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The notion of financial sciences covers quite a broad spectrum of scientific disciplines. The most obvious are public finance, corporate finance, capital and money markets, banking and accountancy. Therefore, to make the structure more clear, we divided the contents of previous volumes of our journal into several parts with their own subtitles. However, more and more issues appeared that could not be attributed to any of these “classic” branches, like virtual money, personal finance, or interdisciplinary problems. We decided therefore to present the contents of this issue of Financial Sciences in the alphabetical order of the authors’ names. The reader will notice that most of the articles included in this volume go far beyond the standard classification. An obvious reason is that almost any human public activity has some financial aspects, and this is clearly reflected in all the articles published here. It is my honour and pleasure to thank all the authors for their creative contribution to the contents of this volume, as well as the referees for their efforts to maintain the already acknowledged scientific level of our journal. I hope that the reading of the articles presented here will bring some interesting insights into the current state of the evolution of the financial sciences. Ewa Bogacka-Kisiel
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In this fifty-fourth issue of the journal Econometrics, seven articles are published. Magdalena Osińska presents some remarks on the Polish contribution to financial econometrics. The article by Justyna Brzezińska concerns the analysis of latent vari-able models in economic research. Exploratory factor analysis in the measurement of the competencies of older workers is the subject of the article by Justyna Wik-torowicz. The article by Marcin Gąsior and Łukasz Skowron describes methods for imputation of missing values and their influence on the results of segmentation re-search. The next article covers aspects of the means-end approach in market segmen-tation – clustering of laddering data. Anna Sączewska-Piotrowska presents defini-tion, factors, predictions of near poverty. The last paper, by Łukasz Mach, discusses the evaluation of real estate market development with special consideration given to the stages of the building process. Józef Dziechciarz Editor-In-Chief
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This textbook contains materials for several courses which are taught in the Master’s Programme in Financial Engineering that is run at the Poznań University of Economics and Business. The book consists of seven chapters that cover the main areas of quantitative finance: investment, financial instruments pricing, financial risk measuring and management as well as corporate finance. The main part of the book is devoted to the mathematical models used in the field of finance. There are four chapters devoted to the pricing of financial instruments: from pricing equities using Capital Asset Pricing Model, through derivative instruments on equites, to more complicated derivatives on interest rates. The last topic is illustrated with some genuine examples from the markets in the post-crisis period. One chapter describes basic models and concepts used in measuring financial risk. Two other chapters are about investment. One describes the way in which companies finance their activities. The second one describes investment strategies of hedge funds. All chapters contain exercises and examples from the real markets. In order to understand the topics from the textbook, some prerequisites are required. It is assumed that a potential reader knows the basics of probability theory, linear algebra and calculus. The knowledge of econometrics and statistical methods used in economics will also be useful in better comprehension of the book. All these issues are usually taught in Bachelor’s programmes in Economics or Finance.
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The monograph is the result of the 60th International Conference of AIELF (Association Internationale des Economistes de Langue Française) having place on May 25-27, 2017 at the Poznań University of Economics and Business in Poland with over 120 participants from 25 countries around the world. The conference focused on The issues of economic development in a risked globalization and the book was created around this topic. The monograph consists of 32 chapters that cover the different area of globalization, integration, transformation, innovation, economic growth, monetary policy, public policy, climate changes, labor market, governance, finance and management. The scope of topics is very wide which is the result of broad locals’ problems important for authors geographically scattered around the world (among others Poland, Bulgaria, Spain, Morocco, Algeria, French Guiana, Canada). The monograph was published both in the classic version and in the form of an e-book. The publication is treated by the Francophone countries in Africa, South America, North America, Asia and Europe with approval and considerable recognition.
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Temat: Intergenerational relations ; Społeczeństwo postindustrialne ; Teoria społeczeństwa ryzyka ; Zmiany kulturowe ; Transformation of class structure ; The ‘death of class’ ; The new forms of inequality ; Transformacja struktury klasowej ; „śmierć klasy” ; Nowe formy nierówności ; Post-komunistyczna transformacja ; Prorynkowe postawy ; Prodemokratyczne postawy ; Polskie Badanie Panelowe ; Social classes ; Post-communist transformation ; Pro-market attitudes ; Jakość życia ; Polish Panel Survey ; Pozycja stratyfikacyjna ; Subiektywna ocena położenia społecznego ; Położenie społeczne ; Position stratification ; Subjective evaluation of social position ; Measurement scales ; Social position ; Gender inequality ; Gender segregation ; Gender status ; Occupation attainment ; Estonian labour market ; Nierówności płci ; Segregacja ze względu na płeć ; Status płci ; Osiąganie pozycji zawodowej ; Estoński rynek pracy ; Wieś i rolnictwo ; Struktura agrarna ; Różnorodność i zróżnicowanie ; Trzy dynamiki rozwoju wiejskiego ; Agriculture and countryside ; Systemic change ; Agrarian change ; Diversity and differentiation ; Zaburzenia psychiczne ; Strukturalna koncepcja dzieciństwa ; Relacje międzygeneracyjne ; Zagrożenie biedą ; Inicjatywy Unii Europejskiej na rzecz dzieci ; Structural concept of childhood ; Pro-democratic attitudes ; Risk of poverty ; EU initiatives for children ; Tatus społeczno –ekonomiczny ; Klasy społeczne ; Quality of life ; Subjective quality of life ; Nowa gospodarka ; Subiektywna jakość życia ; The three competing rural development dynamics ; Samobójstwa ; Zmiana systemowa ; Skale pomiarowe
Tom poświęcony jest problematyce podziałów społecznych, ich przeobrażeń, uwarunkowań i konsekwencji. Główne wątki analiz prezentowane w tomie odnoszą się do przemian, jakim podlegają struktury współczesnych społeczeństw w pierwszej dekadzie XXI wieku, poddane oddziaływaniu procesów globalizacyjnych i transformacyjnych. Większość artykułów zamieszczonych w tomie charakteryzuje klasyczne podejście do analiz struktury społecznej oparte na próbach dobranych metodą losową. Analizy te dokumentują, iż współczesne społeczeństwa nadal mają strukturę warstwową, a teorie klasowe wciąż pozwalają nam wyjaśnić sposób, w jaki nierówności związane z produkcją i rynkiem, dostępem do edukacji i zasobów organizacyjnych, utrwalają stare i nowe nierówności w czasie. Procesy klasowe nie są jednak jedynymi czynnikami przyczyniającymi się do utrzymania i reprodukcji nierówności. Stąd badanie strukturalnych nierówności społecznych pozostaje wyzwaniem i jednym z głównych celów socjologicznych eksploracji. Teksty zamieszczone w tomie ilustrują różne podejścia stosowane przez badaczy dla wyjaśniania strukturalnych nierówności społecznych wraz z towarzyszącymi im wzorami przekonań i działań.
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