This paper presents the results of research on the admixture of other rock fragments in the granodiorite aggregate (two types of hornfels) produced in Łażany II quarry. It discusses the impact of these components on the selected chemical and mechanical properties important for the use of the aggregate in road construction. Analysed granodiorite grit is a high-class construction material suitable for bituminous mixtures. Its quality is verified in accordance with the PN-EN 13043 standard. The admixture of hornfels in aggregate composition is a consequence of the natural occuring this rock in the Łażany II granodiorite deposit in the Strzegom-Sobótka massif. As there is not selective exploitation of the deposit an extracted raw material is not separated during processing As a result, the aggregate, composed predominantly of granodiorite, comprises variable admixture of hornfels. Tests of properties, such as water absorption, resistance to freezing, resistance to fragmentation, crushing strength, carried out on grain populations of various petrographic types separated from the general samples, exhibit that the presence of hornfels in the aggregate has a beneficial effect, particularly on the mechanical parameters of the produced aggregate. Moreover, two varieties of hornfels differ in terms of some chemical properties (affinity with bitumen, presence of sulphides). These features may affect the durability of the aggregate in the wearing course which is directly influenced by the exterior conditions typical for road pavements.

The objective of this work is to present an energy analysis of different absorption refrigerating systems operating with diverse refrigerants. Also is applied the method of experimental design to optimize configurations proposed by the absorption pairs used and the operating conditions. Both acceptable coefficient of performance and low operating generator temperature are scrutinised. Therefore, a computer program is developed. An investigation of the thermodynamic properties is presented. Results show the coefficient of performance evolution versus respectively the evaporator temperature, temperature of condensation and generator temperature. A particular interest is devoted to the intermediate pressure effect on the performance of different systems. In order to better converge in the selection of the configuration and the refrigerant, which can ensure a high coefficient of performance associated to relatively low operating generator temperature the plan of experiments has been developed, taking in account all parameters influencing the system performance and the function of operating temperature. Results show that the refrigerating machine containing a compressor between the evaporator and the absorber has a coefficient of performance quite acceptable and that it can work at low generator temperature for about 60 ◦C and using the NH3/LiNO3 as refrigerant.

The scope of this analysis included fluvial sediments of the low terrace of the Grajcarek stream in the Małe Pieniny Mts. (Western Carpathians). The structure of the terrace has been surveyed in five profiles. The sedimentary sequence includes alternating layers of gravel and calcareous mud with a maximum thickness of up to 2.2 m. A rich and varied malacofauna has been found in the mud. The age of the sediments was determined using the radiocarbon method. The sediments that make up the terrace cover the younger part of the Middle Holocene and the entire Late Holocene. The analysis of the malacofauna has allowed for the characterization of environmental changes. The most important of them dates back to the Middle Ages and is associated with the phase of intensive settlement in the Pieniny Mts.. It is indicated by deforestation and the related change in the composition and structure of malacocoenoses manifested by the replacement of forest communities by ones with open-country species. Gravel horizons are records of flood periods correlated with wet climatic phases. It is possible to distinguish six such phases covering the following periods: 6600–6100 y cal BP, 5500–5100 y cal BP, 4500–4100 y cal BP, 3200–2300 y cal BP, 2000–900 y cal BP and 400–200 y cal BP. They correspond to the periods of increased fluvial activity of rivers, intensification of mass movements, advances of alpine glaciers and the increase in the water level in lakes.

The aim of the article is to present the role of tourism as a smart specialization, and in particular health tourism in strengthening regional development processes on the example of the Świętokrzyskie Voivodeship. The first part of the article presents the ideas of smart specialization as a concept of stimulating innovative development with a particular focus on tourism in regional innovation strategies. The second part of the article focuses on the uniqueness of natural resources in the context of the spa tourism development potential in the Świętokrzyskie Voivodeship. The third part presents quantitative data characterizing tourism in the Świętokrzyskie Voivodeship. While the fourth part presents the effects of cooperation between entrepreneurs and expert and university employees who, while creating innovations, solve the problems of entrepreneurs, thus contributing to the development of tourism and the Świętokrzyskie Voivodeship. Finally, final conclusions and summary are presented.

The aim of this article is to defi ning problems occurring in the spatial management system, including those independent of subsequent legislative changes. The process of adopting decisions to be viable and socially equitable and execute the requirements of spatial order and sunstainable development requires fundamental changes. The study draws a conclusion – important in the context of subsequent research activities – that the varied application of development decisions in diff erent municipalities is also the result of not preparing a large part of the representatives of municipalities for specifi c spatial activities.

This article aims at constructing a new method for testing the statistical significance of seasonal fluctuations for non-stationary processes. The constructed test is based on a method of subsampling and on the spectral theory of Almost Periodically Correlated (APC) time series. In the article we consider an equation of a nonstationary process, containing a component which includes seasonal fluctuations and business cycle fluctuations, both described by an almost periodic function. We build subsampling test justifying the significance of frequencies obtained from the Fourier representation of the unconditional expectation of the process.

The empirical usefulness of the constructed test is examined for selected macroeconomic data. The article studies survey indicators of economic climate in industry, retail trade and consumption for European countries.

In this article, I am examining the role of categorization in understanding. The problem arises from well-known distinction between explanation and understanding, which has been for a century pursued in hermeneutic tradition. Categorization belongs to explanatory endeavor and its role in understanding is unclear. In order to delimit the scope of inquiry I am focusing on the weakest kind of categorization, so called categorization ad hoc. I am examining the hypothesis to the effect that categorization plays its role in hermeneutic circle as some sort of preunderstanding. Eventually, however, I reject this hypothesis. It is because it leads to hermeneutic paradox: The notion of pre-understanding has a meaning only in the context of full-fledged understanding, which is an unattainable ideal. Such ideal cannot be used as a personal criterion of the quality of one’s understanding. There is a tension between the feeling of understanding and the scarcity of personal means to justify this feeling. I am suggesting that similar, albeit weaker effect occurs also in more elaborate, scientific categorizations. What is really wrong in the passage from categorization to understanding is some form of self-understanding: We do not know whether we understand better, or at all when we put some categorical order onto our experience. We do not seem to have the required meta-understanding.

This article contains a bibliometric analysis and an overview of the lifetime achievement of Jerzy Leonard Myśliński (1934–2022). He authored 287 academic publications devoted mostly to media history (81%), including 25 monographs, 30 studies published in collective works, and more than 232 articles and reviews. A citation analysis of his contributions shows that Jerzy Leonard Myśliński ranks as one of the most highly cited historians of the Polish press in 1960–2010.

This article examines the broad reception of Virginia Woolf in the interwar press in Poland. On the basis of over a hundred press materials, it assesses the contribution of selected newspapers and magazines as well as cultural mediators to the process that enhanced both the transfer of modernism and the development of reading culture. The article analyzes diverse strategies of interpretation and cultural transfer whose develop-ment was stimulated by cultural centres and transna-tional modernist networks.