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Wyświetlanie 1-15 z 97
Tytuł:
Income tax: a comparison of the forecasting methodologies
Autorzy:
Pavlik, Martin
Powiązania:
https://bibliotekanauki.pl/articles/425078.pdf
Data publikacji:
2013
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
income tax
forecasting
ARCH models
GARCH models
EGARCH models
Akaike information criteria
Opis:
The author focuses on income tax forecasting. He compares the different forecasting methodologies. He also compares his solution to the official annual forecasts in the Slovak Republic. He chose the quarters of years as the time units.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2013, 3(41); 104-112
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Innowacyjne modele biznesu dla IT – wyzwania i perspektywy rozwoju
Innovative IT business models − challenges and prospects
Autorzy:
Sobińska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/432068.pdf
Data publikacji:
2014
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
management
business models
IT sourcing models
cloud computing
innovations
Opis:
Information Technology (IT) shapes the success of organizations, giving them a solid foundation that increases both their level of efficiency as well as productivity. New and innovative business models based on advanced information and communication technologies are to promote the growth of enterprises and the flexibility of creating greater value for their stakeholders. The aim of the article is to discuss the challenges and trends facing organizations in the context of the selection and implementation of new business models with particular emphasis on sourcing models in the IT area. Moreover, the article will investigate the impact of IT sourcing models on innovation and competitiveness of the organization.
Źródło:
Informatyka Ekonomiczna; 2014, 1(31); 126-137
1507-3858
Pojawia się w:
Informatyka Ekonomiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Brief review of logit models applications in regional studies
Autorzy:
Markowska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/584013.pdf
Data publikacji:
2017
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
review
logit models
regional studies
Opis:
The problems referring to the functioning of economy are closely related to a territory. The place of their occurrence, whether it is a country, a region or a smaller territorial unit, implies the scale and the benchmark for carrying out analyses. Numerous phenomena within the area of economic research are of complex nature and, moreover, it is frequently difficult to express them in a measurable form. The solution to such “inconvenience” is e.g. the application of qualitative variables. Logistic regression is one of the tools allowing the assessment of dependence and prediction in case of qualitative variables of dichotomous type. The purpose of the study is to review the applications of logit models in regional studies.
Źródło:
Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu; 2017, 476; 9-17
1899-3192
Pojawia się w:
Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Business models in Circular Economy concept
Autorzy:
Rudnicka, Agata
Powiązania:
https://bibliotekanauki.pl/articles/583073.pdf
Data publikacji:
2018
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
business model
Circular Economy
circular business models
sustainability
Opis:
It seems that in the 21st century business needs to adapt faster than ever to the expectations of the external environment. This makes it necessary to look for new solutions that give the opportunity to reconcile the needs and expectations of consumers who are increasingly aware and enterprise which are trying to meet new requirements. As a result there is a change in the perception of existing business models and a move beyond the linear economic model. The new optics of looking at business is both legitimate and necessary. One of such concepts is Circular Economy (CE) which incorporates the existing management concepts into the strategic idea of natural resources protection. What is more, the assumptions of the CE are coherent with the postulates of sustainable development and, in particular, environmental aspects, which constitutes its additional value. The aim of the article is to present the idea of CE in terms of business models.
Źródło:
Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu; 2018, 520; 106-114
1899-3192
Pojawia się w:
Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A polytomous item response theory models using R
Politomiczne modele teorii odpowiedzi na pozycje testowe w programie R.
Autorzy:
Brzezińska, Justyna
Powiązania:
https://bibliotekanauki.pl/articles/425272.pdf
Data publikacji:
2016
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
IRT models
multidimensional IRT models
measurement theory
R software
Opis:
Item response theory (IRT) is widely used in educational and psychological research to model how participants respond to test items in isolation and in bundles. Item response theory has replaced classical measurement theory as a framework for test development, scale constructions, scree reporting and test evaluation. The most popular of the item response models for multiple choice tests are the one-parameter (i. e. the Rasch model) and threeparameter models. This is the general framework for specifying the functional relationship between a respondent’s underlying latent trait level, commonly known as ability in educational testing, or the factor score in the factor analysis tradition and an item level stimulus. In this paper, arguments are offered for continuing research and applying multidimensional IRT models. The position is also taken that multi-parameter IRT models have potentially important roles to play in the advancement of measurement theory about which models to use should depend on model fit to the test data. All calculations are conducted in R available from CRAN which is a widely-used and well-known environment for statistical computing and graphics.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2016, 2 (52); 43-52
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measuring innovation maturity – literature review on innovation maturity models
Autorzy:
Inków, Monika
Powiązania:
https://bibliotekanauki.pl/articles/432430.pdf
Data publikacji:
2019
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
innovation capability
innovation maturity
innovation maturity models
Opis:
In recent years it has noticed that innovation and innovativeness have become the basis for the success of not only individual business entities but entire regions and economies. What is more, there have been opinions in the literature that individual innovations are no longer a guarantee of survival for an organization, but such a guarantee is rather the capacity for continuous innovation. Therefore the organization’s ability to transform resources in favour of the organization – the innovation capability – is decisive, while the ability to use resources appropriately, including innovation capabilities, is referred to as innovation maturity. In this article the author decided to introduce the essence of innovation maturity models as a tool for measuring innovation maturity. These models are a tool for assessing the level of innovation maturity of an organization. It is worth adding that maturity models originate from the Capability Maturity Model developed by the Software Engineering Institute.
Źródło:
Informatyka Ekonomiczna; 2019, 1 (51); 22-34
1507-3858
Pojawia się w:
Informatyka Ekonomiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
IRT and LC-IRT models for items with ordinal polytomous responses
Modele IRT oraz LC-IRT dla zmiennych politomicznych (o kategoriach uprządkowanych)
Autorzy:
Genge, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/425165.pdf
Data publikacji:
2017
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
IRT theory
polytomous IRT models
latent trait
latent class models
Opis:
Item response theory (IRT) is a model-based theory in which the responses to test items depend on some person and item characteristics, according to specific probabilistic rela-tions. The simplest and most popular are dichotomous IRT models that specify a single (i.e. unidimensional) latent trait under the assumption of normal distribution. This article reviews the latent class ordinal polytomous item response models (LC-IRT) and presents the compari-son with the well-known traditional IRT models (based on the assumption of a normally dis-tributed latent trait). The main goal of the article is to compare the estimation results of differ-ent kinds of ordinal polytomous IRT models with continuous and discrete latent variable in measuring job satisfaction in Poland. We analyzed data collected as part of the International Social Survey Programme using the ltm and MultiLCIRT packages of R.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2017, 4 (58); 62-76
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of descriptive models to forecasting seasonal time series with gaps
Autorzy:
Oesterreich, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/424807.pdf
Data publikacji:
2015
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
forecasting of missing data
descriptive models
systematic gap
Opis:
In this paper were presented the results of the application of quasi-simulation methods to analysis the impact of the occurrence of systematic gaps on the accuracy of inter and extrapolative forecasts for time series with seasonal fluctuations. Forecasts were built on the basis of predictors based on descriptive models with seasonally changing parameters. Theoretical considerations will be illustrated by the empirical example. The models estimation and construction of inter- and extrapolative forecasts were done with R and Statistica 10.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2015, 1 (47); 68-77
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metodologiczne podstawy projektowania modeli dojrzałości
Methodological basis of maturity models designing
Autorzy:
Głuszek, Ewa
Kacała, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/419834.pdf
Data publikacji:
2015
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
maturity
maturity models
EFQM design principles
Opis:
Maturity models are a kind of compendium of knowledge from a given field and a guide for managers translating knowledge into concrete actions which aim is to change and improve an organization. They describe the evolutionary development path which enables an organization to move from the state of inconsistent, short-term business actions to the arranged, monitored and managed ones. The article presents and compares two procedures of maturity models designing and design principles, that is criteria which a maturity model should correspond to as a result of designing, helping potential users in comparing and assessing of existing models. The aim of the article is the assessment of EFQM excellence model as to meeting the criteria of usefulness and application included in design priniples. EFQM excellence model is an example of a well designed prescriptive model which sufficiently covers the most important usefulness criteria.
Źródło:
Nauki o Zarządzaniu; 2015, 2(23); 26-42
2080-6000
Pojawia się w:
Nauki o Zarządzaniu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Struktura terminowa stóp procentowych opisana modelami stopy krótkoterminowej
Term structure of interest rates described with short-rate models
Autorzy:
Jodź, Kamil
Powiązania:
https://bibliotekanauki.pl/articles/434054.pdf
Data publikacji:
2014
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
spot rate
term structure of interest rates
yield curve
one-factor short-rate models
two-factor short-rate models
Opis:
The article gives an overview of the theoretical basis for the term structure of interest rates. Theoretical and practical benefits of this kind of modeling are indicated. The arguments in support of the opinion that the financial market model with continuous time is better than the model with discrete time are listed. Slightly wider is the discussion on one-factor and two-factor models of the dynamics of the short term rate due to stochas-tic differential equations.
Źródło:
Śląski Przegląd Statystyczny; 2014, 12(18); 273-284
1644-6739
Pojawia się w:
Śląski Przegląd Statystyczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Competing risk models of default in the presence of early repayments
Autorzy:
Wycinka, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/425193.pdf
Data publikacji:
2019
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
Cox model
Fine-Gray model
pseudo-observations
mixture models
vertical modelling
Opis:
One of the central tasks of credit institutions is credit risk assessment, in which the estimation of the probability of default is an important element. The size of an institution’s credit portfolio can decrease as a result of early repayments, which changes the probability of default over time. Prognosis of the probability of default should therefore also take into consideration the prognosis of early repayments. In this paper, methods of evaluating the probability of default over time, using competing risks regression models, are considered. Methods of evaluation for models of default over time are proposed. A sample of retail credits, provided by a Polish financial institution, was empirically examined.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2019, 23, 2; 99-128
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
IT security risks in modern sourcing models – cloud computing. An example
Autorzy:
Rot, Artur
Sobińska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/432314.pdf
Data publikacji:
2013
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
IT management
IT/IS security
IT risks
sourcing models
Cloud Computing
Opis:
Information technologies have been developing nowadays at an amazing speed, affecting the functioning of organizations. Almost all of these organisations are involved in some way in sourcing activities, and each of them develops a sourcing relationship that suits its particular needs. In the article, different kinds of outsourcing models were discussed, which are applied in the contemporary management, with particular emphasis put on cloud computing. Cloud computing has become an omnipresent and an increasingly important technology and new risk areas have appeared. The main aim of this article was to present the most important risks related to the introduction of management models based on the most recent IT technologies, e.g. cloud computing, and emphasize the role of appropriate IT security management.
Źródło:
Informatyka Ekonomiczna; 2013, 2(28); 112-123
1507-3858
Pojawia się w:
Informatyka Ekonomiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie dynamicznych modeli liniowych w estymacji pośredniej
Application of dynamic linear models in indirect estimation
Autorzy:
Wilak, Kamil
Powiązania:
https://bibliotekanauki.pl/articles/425221.pdf
Data publikacji:
2013
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
indirect estimation
borrowing strength across time
dynamic linear models
Opis:
In this paper we describe a method of estimation which uses dynamic linear models and then we use this method for estimating unemployment rate. We attempt also to evaluate this approach in respect of the quality of assessment. In this aim we do simulation study which purpose is to compare estimators based on dynamic linear models to direct es-timators. The results of the survey show that the use of time series models may greatly re-duce variance of direct estimators, and thereby increase the precision of assessment.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2013, 2(40); 126-138
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of latent class models in economic research
Analiza modeli zmiennych ukrytych w badaniach ekonomicznych
Autorzy:
Brzezińska, Justyna
Powiązania:
https://bibliotekanauki.pl/articles/425114.pdf
Data publikacji:
2016
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
latent class models
latent variables
categorical data analysis
R software
Opis:
Latent variable models are used and applied in many areas of the social and behavioral sciences. The increasing availability of computer packages for fitting such models makes latent variable models popular, known and applied in many scientific areas. Latent variable models have a very wide range of applications, especially in the presence of repeated observations, longitudinal data, and multilevel data. The basic model postulates an underlying categorical latent variable; within any category of the latent variable the manifest or observed categorical variables are assumed independent of one another (the axiom of conditional independence). The observed relationships between the manifest variables are thus assumed to result from the underlying classification of the data produced by the categorical latent variable. In this paper we present the theoretical and methodological aspects of latent variable models, as well as their application in R software in the field of economic research.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2016, 4 (54); 36-47
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nowoczesne modele analizy gospodarki światowej a ewolucja badań nad międzynarodowymi oddziaływaniami krajowej polityki makroekonomicznej
Modern global economy models in the context of overall ”evolution” in the research on international effects of the macroeconomic policy
Autorzy:
Domańska, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/434692.pdf
Data publikacji:
2013
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
international economics
global models
international transmission of shocks
economic models
Opis:
The analysis of the international transmission of the economic shocks and influence, among them the international effects of the national macroeconomic policies, constitutes a very wide and multi-aspectual field of the open economy macroeconomics. Flourishing interest in this field of theory and research, resulting from the post-war dynamic development of the international economic relations (in many facets of this issue) and more broadly − globalization, has led to improving the ”old” schemes and models considered as underlying the core of the open economies’ theory. The evolution of the thougts on international economic linkages and progress made in analysing them were marked by including into the analysis some new assumptions more adequate to the changes observed in the global economy and more perfectly reflecting new tendencies creating modern global ”reality”. All above has led to shaping so called new advanced approach to the open economy macroeconomics. In the empirical aspect, this approach is based on wide implementation of econometric modelling and panel data analysis. As to the theory we can say it is a synthesis – the effect of many years’ scientific research in the field. The aim of the article is to present the new advanced models of the global economy, in particular this part of them which refers to the international transmission of the effects of national macroeconomic (fiscal and monetary) policies and other shocks influencing modern open markets (interest rate shocks, price shocks, terms of trade shocks etc.). To realize so specified goal the following models will be briefly presented: International Monetary Fund’s Multimod, INTERLINK OECD (widely used in the global research in the 80s and the 90s) and the New Global Model OECD (currently implemented). As the background the chosen key steps of the evolution in the theoretical approach as well as empirical research in this stream of the open economy macroeconomics will be overally presented, starting from the Mundell-Fleming model being the crucial turning point of the thoughts on international linkages and macroeconomic policy influence. The author is going to underline the following aspects of the progress which has taken place in the questioned field of research: implementation of new approaches originating from the neo-classical concepts (e.g. the monetary approach to modelling the exchange rates), incorporating the monopolistic competition, monopolistic and oligopolistic economy models into the overall analysis, taking into consideration the short-term effects of the dynamic changes coming from temporary or permanent price, demand or terms of trade shocks, taking the assumption of the incomplete markets and intertemporal choice as an integral part of the analysis.
Źródło:
Ekonomia - Uniwersytet Ekonomiczny we Wroclawiu; 2013, 3 (24); 26-43
2080-5977
Pojawia się w:
Ekonomia - Uniwersytet Ekonomiczny we Wroclawiu
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 97

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