Acta Universitatis Lodziensis. Folia Oeconomica: Recent submissions
Now showing items 1461-1480 of 4525
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Periodyzacja zmian struktury inwestycji i zatrudnienia w przetwórstwie przemysłowym
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)The problems of employment and investment outlays are the subject of interest a lot of economists and politicians. In the first part of the article the meaning of the different economic structures in the economy was ... -
Nowe podejście do instrumentów polityki rynku pracy
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)There are many ways leading to the improvement of the situation on labour market and to increase of the effectiveness of labour market policy (LMP). There is no one model country which solutions in the field of LMP can ... -
Niedopasowania (mismatch) w Polsce
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)There is large structural inbalance in the polish labour market. The highest level of structural mismatch there was during 1994-2004 by occupations and sectors (but more precisely by EKD section). If we wanted to have ... -
Wybrane problemy oceny aktywnych programów rynku pracy
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)Active labour market policies are still one of the major tools to fight unemployment and improve functioning of the labour market. However, growing scepticism regarding the effects of active policies and very different ... -
Tendencje demograficzne, zapotrzebowanie na zagranicznych pracowników i polityka imigracyjna krajów Unii Europejskie
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)Falling birth rates, population ageing, declining labour force, and increasing demand for qualified workers result in labour shortages, especially in the wealthiest European countries. The qualification structure of ... -
Sprawiedliwość czy efektywność? Analiza wykorzystująca ekonometryczny model wzrostu gospodarczego z historycznie optymalnym zróżnicowaniem płac
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)The aim of the article is to analyse mutual relations between justice and efficiency in the context of the market economy from a philosophical point of view. Justice is interpreted as the equal division of income which ... -
Fundusze strukturalne jako instrument wspierania przedsiębiorstw
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)In the moment of the accession to the European Union Poland became one of the greater incumbents of the help originating from EU’s sources. The wide of help causes that businessmen, territorial autonomies, engaged, ... -
Multivalued Markov Processes
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)Multivalued random variables and stochastic processes can be use in integral geometry, mathematical economics or stochastic optimization. Using the methods of selection operators we can give the selection characterization ... -
GARCH Models of Time Series on DAM
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)In this paper an analysis of the time series on the Day Ahead Market (DAM) of the Polish Power Exchange is presented. In this analysis Generalized Autoregressive Conditional Heteroscedasticity (GARCH) models are used to ... -
Jackknife Forecasts of Time Series
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)In the paper we present the examples of forecasts of time series with seasonal fluctuations. Based on the jackknife method we estimate variances of seasonal factors and the MSE of prediction. Jackknife method has been ... -
Methods of Classification Error Decompositions and their Properties
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)The idea of error decomposition originates in regression where squared loss function is applied. More recently, several authors have proposed corresponding decompositions for classification problem, where 0-1 loss is ... -
The Rough Sets Approach to Multicriteria EU ’s Countries Classification Problem Based on Dominance Relation - the Probabilistic Characteristics of Decision Rules
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)The rough sets theory was introduced by Z. Pawlak (1982). The mathematical base on rough sets approach is a binary relation on universe of objects. In the classic rough sets theory there is an indiscemibility relation. ... -
A Proposal for Using Selected Tree-Based Models to Identify Operative Risk Subgroups among Patients Undergoing Coronary Artery Bypass Grafting
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)Classification and regression trees are very popular and attractive types of classifiers, widely used to solve decision-making problems in different fields of science. The study was conducted to identify preoperative ... -
On the Application of Classification Trees to Analyze Customer Loyalty and Satisfaction
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)It became more important to recognize customer expectations and to oiler product properties, which convince customer to buy the analyzed product. In customer loyalty and satisfaction analysis methods, classification trees ... -
Comparative Assessment of Some Selected Methods of Determining the Number of Clusters in a Data Set
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)This paper is an attempt to compare the performance of an algorithm for determining the number of clusters in a data set proposed by the author with other methods of determining the number of clusters. The idea of the ... -
Discrimination of Symbolic Objects
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)Symbolic Data Analysis is an extension of multivariate analysis dealing with data represented in an extended form. Each cell in symbolic data table (symbolic variable) can contain data in form of single quantitative ... -
Feature Selection and Multiple Model Approach in Discriminant Analysis
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)Significant improvement of model stability and prediction accuracy in classification and regression can be obtained by using the multiple model approach. In classification multiple models are built on the basis of training ... -
About Phase Transitions in Kendall’s Shape Space
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)In our article, we discuss the choice of space shape, appropriate for describing an economic process and analyze usefulness of the metrics proposed by I. L. Drуden and K. V. Merida (1998). We introduce and interpret the ... -
Sequential Tests with Power Equal to 1 for Chosen Location Parameters
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)We often verify hypotheses about random variable distribution parameters, when the variable distribution is unknown. In these cases we apply nonparametric tests, in particular nonparametric sequential tests. This paper ... -
Verification of Hypotheses Concerning Parameters of the Regression Model for Complex Samples
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)The paper considers the linear regression function y = βx + ε, where β is a vector of unknown parameters and ε is a rest component. In case of complex samples some modifications of test statistics should be made. Results ...