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We treat financial markets as complex networks. It is commonplace to create a filtered graph (usually a Minimally Spanning Tree) based on an empirical correlation matrix. In our previous studies we have extended this sta...

The study examines relics of leather shoes uncovered during the exploration of modern (18th–19th century) burials in the crypts of the church in Radzyń Podlaski, Eastern Poland. The shoes were found alongside the rema...

Canonical correlation methods for data representing functions or curves have received much attention in recent years. Such data, known in the literature as functional data (Ramsay and Silverman, 2005), has been the subje...

The automotive market is constantly developing and employing innovative technologies. The new trend of electromobility affects the whole world and is part of the transformation of the economy. Also, the European Union ta...

The aim of this paper is to analyse the public R&D investments in Poland and other Central and East European (CEE) countries, especially their share in public expenditures and their impact on private R&D. To verify the r...

Tunisia constitutes one of basic directions of tourist trips in Poland. However terrorist attack on the museum in Bardo, widely related in mass media, changed the image of Tunisia as the safe holiday destination. The ass...

One of the most common errors in research on sustainable development is to analyse a set of features describing this development within one set of diagnostic features. Such an approach does not allow for examining the re...

In economic research very often the location problem in the single sample or estimation  of the difference in two samples location is commonly tested by experimental economists. Usually the used tests are Wilcoxon test ...

As technology advances, there is a growing number of potential data sources that can provide an alternative to traditional surveys. An example of this is the real time search popularity data made available through Google...

Topicality of comparative study in Foreign Direct Investments (FDI) is determined by the need to deepen analysis of economic activity challenges and opportunities related to cross-border investments. Research in FDI tren...

The paper aims to analyse the trends in mortality of men and women aged 65 and more in the Lodz region in the period 1999–2013, with particular emphasis on the phenomenon of excess male mortality. A complete database o...

The main objective of this article is to prepare a hierarchy and typology of rural areas in Poland showing the level of the human capital indicator and his spatial disparities in the context of educational factors. Selec...

Due to the rapid growth of significance of sustainable development in recent years, there have been many ideas regarding the practical application of environmental and social concepts in business management. Many of thes...

The research focuses on Poles’ attitudes towards selected aspects associated with social relations. Responses to the following 6 statements were examined: 1 – People try to help others above all, 2 – Homosexuals sh...

This work is intended as an attempt to illustrate and compare the pattern of fertility in European countries: Belarus, Croatia, Hungary, Poland, Portugal, Spain, Sweden, and Switzerland. It deals with the analysis of fer...

Hugo Steinhaus (1887–1972) studied mathematics and philosophy at the Jan Kazimierz University in Lwow. Since 1905 he stayed in Göttingen where in 1911 he obtained his PhD under David Hilbert. In 1920 he became profess...

In times of accelerating inflation, financial instruments that protect capital against loss of value are becoming increasingly important. Therefore, an open question remains as to what to invest in to, if not outstrip, a...

Open account and letter of credit are the most often used forms of payment in international trade. The first one is simple and cost efficient, but without payment assurance for the seller, the second one is secured, but ...

A growing interest in the phenomenon of economic opportunism can be mainly explained by new institutional economics (NIE). It has changed the limitation of that phenomenon into the main method of increasing the efficienc...

Since 2005 an increased investment activity of territorial governments in Poland has been noticed. This was possible due to the availability of quite significant funds from the EU non--repayable aid. Investments that are...

There are various instruments for Russia to have influence on its neighbours, such as using opinion leaders (authorities), intellectuals, and journalists to create a favourable informational context or to place the order...

The popular clustering procedures applied in administrative units clustering (regions, districts, municipalities) frequently result in distinguishing incoherent groups, which is difficult to accept by the analyses addre...

Modern research methods of economic development of regions and cities pay special attention to the position of the units in the area expressed by geographical position, the distance between the tested individuals and nei...

Globalization and the development of modern information technology have contributed to the higher importance of communication technological support and its use between the client and the entrepreneur in the service indus...