Mineral deposits are such type of assets, the valuation of which can be carried out in a very diverse manner. Methods and procedures for such a valuation are most often applied to mineral deposits with mineral reserves (according to the CRIRSCO classification), much less frequently and usually only using a comparative approach for undeveloped, initially recognized mineral deposits (with mineral resources).

In Poland, a significant portion of mineral deposits, mainly of energy, metal and chemical minerals, are covered by the so-called mining property of the Treasury. At the moment, there is a lack of consistent and thoughtful management of these deposits. The appropriate methodology for valuing these deposits, which are at various stages of recognition (sometimes also of development), should be one of the key elements of such management. The State Treasury usually disposes of mining rights by “establishing” mining usufruct in the form of a contract, with the determination of remuneration for this establishment. The rules for determining remuneration for the establishment of mining usufruct are determined on the basis of an internal informal document of the Ministry of the Environment with very simplified rules for determining this remuneration, to a very limited extent related to the actual value of the deposit, which is also variable over time. This fee should be in close relation to the value of the mineral deposit valued at a given moment, taking the current conditions, including technological, environmental, formal and legal, and – in particular – market conditions into account. The valuation of mineral deposits covered by mining property, except for current needs in determining the basis for remuneration for mining usufruct establishing, should also be used to determine the value of these deposits annually as part of the State Treasury property and to present its results as part of the State Treasury Property Status Report.

It is an open matter whether the methodology of valuation of the discussed mineral deposits should be based on accepted and widely used solutions for the valuation of mineral deposits for the purposes of business transactions or based on methodology of valuation of deposits as part of the planned system of Integrated Environmental and Economic National Account (up to date poorly developed). The paper presents the most important elements of both methodological approaches. It seems that the use of selected elements of each of these approaches would be advisable in this case.

The role and importance of energy security increases with the development of civilization, whose inherent element has become the demand for energy and its carriers. The article discusses the issue of cooperation in the field of energy security in Central Europe at the moment of finishing work on the North-South Corridor, which changes the existing gas architecture in the region. In order to better understand the situation in the region, the energy systems of the Visegrad Group countries, identical to the Central European region, have been analysed, according to the definition of the World Bank and OECD. Considering the historical and geopolitical connections of the Visegrad Group’s fate, it is important to create a common gas market. The physical interconnection of gas systems greatly increases energy security in this region. Moreover, thanks to the construction of LNG terminals in Poland and Croatia, it will be possible to diversify not only the routes, but also the sources of supply of this important raw material.

The article presents an analysis of Russia’s participation in international steam coal trade, which has been its important participant for years. The research covered the years 2014–2018. The geographical location on two continents and the availability of coal deposits, favors its presence on both the Pacific and Atlantic markets. The article also discusses the main coal producers in Russia and the prices of Russian steam coal directed to the spot market. Due to the significant share of coal exports for the Russian economy, the focus was also on analyzing Russian seaports.

In recent years, Asian exports have dominated in Russian steam coal exports. The share of export to this market in the years 2014–2018 was in the range of 49–57% (60–87 million tons). Currently, three countries play an important role among Asian countries: South Korea, China and J apan. They purchased a total of 38–52 million tons of Russian coal. Although in the years under analysis Russia exported 52–67 million tons of steam coal to the European market, the share of this market dropped from almost half to around 40%. T he slow departure from coal energy contributes to reducing the share of recipients from this direction. Among European countries, in 2014 the main direction of export was Great Britain with 19% (24 million tons) of total export share. In 2018, exports fell to 9 million tons (5%).

Among European destinations for Russian coal, Poland’s share is growing in importance. In the years 2014–2018, steam coal exports to Poland varied in the range of 5.6–16.2 million tons. In the years 2014–2018 it changed in the range of 5.6–16.2 million tons. The dynamic growth achieved in the last three years is noteworthy. In relation to 2016, imports increased by 10.0 million tons and in 2018 amounted to as much as 16.1 million tons. The article also discusses the geographical structure of coal imports to Poland by railway border crossings and seaports.

In this article, the contribution of renewable energy sources (RES) to the worldwide electricity production was analyzed. The scale of development and the importance of RES in the global economy as well as the issues and challenges related to variability of these sources were studied. In addition, the chemical conversion of excess energy to renewable methanol has been presented. The European Union regulations and targets for the years 2020 and 2030 concerning greenhouse gases reduction were taken into consideration. These EU restrictions exact the further development of renewable energy sources, in particular, the improvement of their efficiency which is closely related to economics. Moreover, as a part of this work, energy storage were described as one of the ways to increase the competitiveness of renewable energy sources with respect to conventional energy. A method for the conversion of carbon dioxide separated from high-carbon industries with hydrogen obtained by the over-production of green energy were described. The use of methanol in the chemical industry and global market have been reviewed and thus an increasing demand was observed. Additionally, the application of renewable methanol as fuels, in pure form and after a conversion of methanol to dimethyl ether and fatty acid methyl esters has been discussed. Hence, the necessity of modifying car engines in order to use pure methanol and its combination with petrol also was analyzed.

Władysław Łuszczkiewicz was an art historian, artist, pedagogue, an outstanding personality of nineteenth-century Krakow, active in many fields. He was a professor at the Cracow School of Fine Arts, and in the years 1857–1873 and 1893–1895 he was the headmaster of this school. He was a teacher of many artists, of which it is enough to mention only the greatest — Jan Matejko, Stanisław Wyspiański, Józef Mehoffer and Artur Grottger. In 1883, Łuszczkiewicz was appointed the director of the National Museum in Krakow. He managed this institution until his death, that is until 1900.

Among the oldest source materials belonging to the Archive of the National Museum in Krakow, we can find the correspondence of former students of the School of Fine Arts addressed directly to their former teacher — Professor Łuszczkiewicz, who was at this time the director of the National Museum in Krakow. Based on selected letters, the article presents their interesting subject matter and presents the issues in which the students wrote to their Master. The attempt to describe the relation between former students and their master revealed in letters will be made.

The intention of this article is to evaluate the exogenous dismissal probabilityfor a certain worker depending on her characteristics for the Polish labormarket. To model this phenomenon I considered a range of count datamodels. In the analysis the data from the Polish General Social Survey of 2008 was used. Covariates explaining the number of unemployment spells wereselected in the spirit of the human-capital theory. In the course of the studyexistence of intransferable firm-specific human capital across employers anddepreciation of the human capital acquired through learning by doing have beenempirically confirmed. The conducted analysis may be considered the first stepin the calibration of a job-search model with heterogeneous agents.

In the morphosyntactic literature, there exist two approaches to the problem of argument structure in English nominal synthetic compounds such as furniture moving or dog training. According to Borer (2012), such synthetic compounds belong to the class of referential nominals and thus lack argument structure. On the other hand, Alexiadou (2017) maintains that the external argument is present in the structure of synthetic compounds due to their ability to co-occur with by-phrases. In this paper, we present an extensive set of corpus data to show that synthetic -ing compounds do project the external argument, which is evidenced by their ability to license not only by-phrases but also agent-oriented adjectives and instrumental phrases. Importantly, the corpus data indicates that certain synthetic -ing compounds display the capacity to occur in aspectual contexts; nominal compounds fall in two classes in that regard.

This article provides a detailed review of the ethnosurvey, a research methodology that has been widely applied to the study of migration for almost four decades. We focus on the application of ethnosurvey methods in Mexico and Poland, drawing on studies done in the former country since the early 1980s and, in the latter, since the early 1990s (including several post-2004 examples). The second case is particularly relevant for our analysis as it refers to a number of novel migration forms that have been identified in Central and Eastern Europe in the post-1989 transition period. Drawing on these studies, we consider the advantages and disadvantages of the ethnosurvey as a research tool for studying inter-national migration. Its advantages include its multilevel design, blend of qualitative and quantitative methods, reliance on retrospective life histories and multisited data collection strategy. These features yield a rich database that has enabled researchers to capture circular, irregular, short-term and se-quential movements. Its disadvantages primarily stem from its hybrid sampling strategy, which neces-sarily places limits on estimation and generalisability and on the technical challenges of parallel sampling in communities of both origin and destination. Here we argue that the ethnosurvey was never proposed and should not be taken as a universal methodology applicable in all circumstances. Rather it represents a specialised tool which, when correctly applied under the right conditions, can be ex-tremely useful in revealing the social and economic mechanisms that underlie human mobility, thus yielding a fuller understanding of international migration’s complex causes and diverse consequences in both sending and receiving societies.

Thermodynamic assessment of the phase stability of the solid solutions of superionic alloys of the Ag3SBr1-xClx(I) system in the concentration range 0 ≤ x ≤ 0.4 and temperature range 370–395 K was performed. Partial functions of silver in the alloys of solid solution were used as the thermodynamic parameters. The values of partial thermodynamic functions were obtained with the use of the electromotive force method. Potential-forming processes were performed in electrochemical cells. Linear dependence of the electromotive force of cells on temperature was used to calculate the partial thermodynamic functions of silver in the alloys. The serpentine-like shape of the thermodynamic functions in the concentration range 0–4 is an evidence of the metastable state of solid solution. The equilibrium phase state of the alloys is predicted to feature the formation of the intermediate phase Ag3SBr0.76Cl0.24, and the solubility gap of the solid solution ranges of Ag3SBr0.76Cl0.24and Ag3SBr.

In this paper, thermodynamic analysis of a proposed innovative double Brayton cycle with the use of oxy combustion and capture of CO2, is presented. For that purpose, the computation flow mechanics (CFM) approach has been developed. The double Brayton cycle (DBC) consists of primary Brayton and secondary inverse Brayton cycle. Inversion means that the role of the compressor and the gas turbine is changed and firstly we have expansion before compression. Additionally, the workingfluid in the DBC with the use of oxy combustion and CO2 capture contains a great amount of H2O and CO2, and the condensation process of steam (H2O) overlaps in negative pressure conditions. The analysis has been done for variants values of the compression ratio, which determines the lowest pressure in the double Brayton cycle.

Azo dye wastewater treatment is urgent necessary nowadays. Electrochemical technologies commonly enable more efficient degradation of recalcitrant organic contaminants than biological methods, but those rely greatly on the energy consumption. A novel process of biofilm coupled with electrolysis, i.e., bioelectrochemical system (BES), for methyl orange (MO) dye wastewater treatment was proposed and optimization of main influence factors was performed in this study. The results showed that BES had a positive effect on enhancement of color removal of MO wastewater and 81.9% of color removal efficiency was achieved at the optimum process parameters: applied voltage of 2.0 V, initial MO concentration of 20 mg/L, glucose loads of 0.5 g/L and pH of 8.0 when the hydraulic retention time (HRT) was maintained at 3 d, displaying an excellent color removal performance. Importantly, a wide range of effective pH, ranging from 6 to 9, was found, thus greatly favoring the practical application of BES described here. The absence of a peak at 463 nm showed that the azo bond of MO was almost completely cleaved after degradation in BES. From these results, the proposed method of biodegradation combined with electrochemical technique can be an effective technology for dye wastewater treatment and may hopefully be also applied for treatment of other recalcitrant compounds in water and wastewater.