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The article is a continuation of the previous author’s papers (2007, 2009, 2012) devoted to the optimal methods of forecasting Polish macroeconomic variables, with the sample of GDP. The research was aimed at a comparison of the quality of nowcasts (”fore-casts” of the present time) and forecasts prepared with a dynamic factor model with mixed frequency and data gaps handling (MFDG-DFM) proposed by...
The purpose of this article is to identify speculative activities on the futures commodity market of the CME and to investigate the tendencies of such activities by classifying them according to whether their impact on the market is stabilizing or destabilizing. That goal was accomplished by generating one-step-forecasts for the monthly returns of the future contracts with the shortest time left to...
In the article a quantitative and valuable structure of transactions of land properties has been analyzed, especially taking into consideration lands intended for a dwelling-houses building, in Poland, in the years 2009-2011. Using one of the multivariate analysis methods the analysis and the evaluation of the spatial diversification of the voivodeships with regard to the analyzed properties turnover...
The paper focuses on latent class models and their application for quantitative data. Latent class modeling is one of multivariate analysis techniques of the contingency table and can be viewed as a special case of model-based clustering, for multivariate discrete data. It is assumed that each observation comes from one of the numbers of subpopulations, with its own probability distribution. We used...
The main goal of the study is the application of taxonomic analysis to assess the financial condition of companies. The analyzed group consisted of nineteen food sector companies listed on the Warsaw Stock Exchange in 2012. Ordering and grouping of companies was done using taxonomic development measure in both the classical and positional approach. In addition, the effectiveness was verified by indicators...
The diversity and multiplicity of information associated with investment in the stock market can cause problems with the proper understanding of the analyzed phenomena. In particular it refers to small investors who invest directly in stocks. Therefore, evaluating the financial condition of listed companies is very important, hence the need to use methods that will simplify and thus make stock market...
W 1961 roku w katastrofie lotniczej zginął szwedzki polityk – sekretarz ONZ – Dag Hammarskjöld. Media światowe przypomniały wtedy wypowiedź jego matki: „Przy narodzinach twoich wszyscy się radowali, a jedynie ty płakałeś. Żyj tak, by po twej śmierci tyś się cieszył, a inni płakali”. Słowa te okazały się prorocze. Przy jego zwłokach znaleziono książeczkę Tomasza a Kempis De Imitatione Christi – o naśladowaniu...
The aim of this article is to present the possibilities of using correspondence analysis in the study of changes in the gymnasium exam results in Poland. The study used exam results from 2003 and 2010 of the Regional Examination Board, which consist of two regions: Lower Silesia and Opolskie. The usefulness of correspondence analysis using multiway contingency tables and correspondence analysis of...
Interpersonal trust in Poland is found to be at a very low level. This paper aims at the analysis of this phenomenon on the basis of European Social Survey data. Principal components analysis was applied to examine the degree of interpersonal trust in Poland in relation to other countries. Associations of three dimensions of trust, i.e. trustfulness, fairness and helpfulness, were analyzed by log-linear...
The paper focuses on an assessment of the changes over time in tertiary education’s influence on the level of wages with the application of the Mincerian earnings function method. The conducted empirical research allowed for the identification of growth patterns in the so called pseudo rate of return to higher education in Poland and Germany in the last decade (using data from the Polish Social Diagnosis...
The paper attempts to verify the hypothesis of the existence of generational differences in the perception of the conditions and quality of work. The research issues considered in this paper are chosen following the regularities observed in the labor markets indicating that special attention should be paid to two age groups: the youngest and the oldest persons. The highest unemployment rate in the...
This paper aims at investigating the determinants of tourism demand in Greece over eight years (2004-2011). Tourism is the main industry of Greece as its share in the Greek economy varies from 15% to 20% of GDP whether measured directly or indirectly respectively. We opted for a macroeconometric approach and, in particular, building on the existing literature we used panel data estimation techniques...
On the 8th of November 2013 the Senate of the Wrocław University of Economics gathered for a special meeting. The academic community was commemorating Professor Zdzisław Hellwig – one of the greatest Polish experts in the fields of statistics and econometrics, as well as a man of brilliant mind and kind heart, and an excellent teacher. Profssor Hellwig’s brief biography was presented by Prof. Andrzej...
In 2006, the European Commission presented the Modernization Agenda for Universities founded on three reforms: curricular, governance and funding. According to the agenda, funding should be based on output-oriented budgeting. What is more, investment in higher education should bring benefits to all stakeholders. The most commonly used tool for measuring the private rate of return to education is Mincer’s...
In a knowledge-based economy, the human capital that is capable of innovative thinking and entrepreneurial action is the factor responsible for the creation of prosperity. Technology parks are an example of a high concentration of innovative human capital. In the past five years several new park initiatives have been established in Poland. In some large cities such as Poznan and Wroclaw, there is...
The paper presents a case study of one of the picking zones of real Polish logistics centre of automotive parts and accessories. The aim of the study was to compare the effectiveness of different order-picking methods. The work organization in the warehouse was briefly presented. Then different routing methods in the one block rectangular warehouse were described (heuristics and optimal algorithm)...
Periodic function – it is a proposition of a new definition – has as its domain the multiplicative group T = {z ∈C : |z| = 1} of complex numbers with module one. Therefore the graph of the function f : T → R lies on the cylinder T × R, and so the graph of cosine function is the ellipse (math formula)
The paper presents a selection of visualization methods which may be useful for the analyses and comparisons of socio-economic structures. The work is focused on the techniques that do not require dimensionality reduction, which is usually accompanied by the loss of some information from the dataset. The methods of graphical presentation of structures and illustration of their similarities and dissimilarities...
The purpose of the article is to present the essence of distance functions, which calculating is a key phase of consensus determining process in the situation of knowledge conflicts appearing in decision support systems. In the first part of the article, distance function and its general definition are characterized. Next, the definitions of distance functions with regard to the sample attributes...
The world oil price is an exogenous as well as key component and factor influencing domestic prices (especially transportation). The question is: how the oil price influences producer and consumer prices. We focus on a short- and long-term relationship between the domestic prices and oil price (expressed in Polish zloty). We use Vector Error Correction Models, with cost-based specification, i.e. including...
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