The chapter deals with the issue of the risk and security management process in public administration, according to the internal audit standards and their requirements. Main legal acts and standards were specified and shortly described. Specially the risk analysis process and security measures selection were emphasized. The possibility to use the software tools for the risk analysis and security measures selection support in public administration was presented. The experiment of OSCAD usage in public administration was shortly described and its results were presented. This experiment shows that the software primarily intended for IT Security Management can be used for risk management in different area as well, for example – in public administration. Some possibilities of further development of risk management supporting tools were proposed.

In this study, the environmental impacts of the organic fraction of municipal solid waste (OFMSW) treatment and its conversion in anaerobic digestion to glycerol tertiary butyl ether (GTBE) were assessed. The production process is a part of the innovative project of a municipal waste treatment plant. The BioRen project is funded by the EU’s research and innovation program H2020. A consortium has been set up to implement the project and to undertake specific activities to achieve the expected results. The project develops the production of GTBE which is a promising fuel additive for both diesel and gasoline. It improves engine performance and reduces harmful exhaust emissions. At the same time, the project focuses on using non-recyclable residual organic waste to produce this ether additive.

The aim of this paper is the evaluation through Life Cycle Assessment of the environmental impact GTBE production in comparison with a production of other fuels. To quantify the environmental impacts of GTBE production, the ILCD 2011 Midpoint+ v.1.10 method was considered. The study models the production of GTBE, including the sorting and separation of municipal solid waste (MSW), pre-treatment of organic content, anaerobic fermentation, distillation, catalytic dehydration of isobutanol to isobutene, etherification of GTBE with isobutene and hydrothermal carbonization (HTC).

The results indicate that unit processes: sorting and hydrothermal carbonization mostly affect the environment. Moreover, GTBE production resulted in higher environmental impact than the production of conventional fuels.

The article present the results of use of the proposed economic and mathematical apparatus to develop scenarios that provide for the partial or complete elimination of contradictions associated with the pricing policy between oil and gas production and the production of refined products. In the output we noted changes in the material consumption of products of the oil and gas sector of Ukraine. We corrected a certain contradiction between the extractive and processing enterprises of the oil and gas sector. This is related to the uneven distribution of value added between them, which allows extractive enterprises to make a profit, while processing enterprises are at a breakeven point. This situation, as we have seen, also distorts the results of the real assessment of resource efficiency in this sector of the economy. Thus, the research is aimed at developing scenarios that provide for a gradual decrease in the price of extractive products and its simultaneous growth in processing so that the corresponding impact on the economy was minimal. The first scenario envisaged a reduction in the price by –10% for the products of oil and gas companies with a simultaneous increase in the price of refining so that the average share of value added in the country as a whole was not decreased, taking appropriate adjustments of resource efficiency indicators into account. The second scenario was based on the need for deeper price adjustments in the oil and gas sector. Thus, the reduction of the price of products at the extractive enterprises at the level of –20% and its increase it in processing while maintaining the national average share of value added was envisioned. The third scenario provided for the equalization of material consumption in production and processing due to the price factor.

The article discusses the point of interconnection between historical policy and international human rights law standards on the example of a so-called decommunisation Act enacted in Poland in 2016 that reduces retirement pensions and other benefits to individuals who were employed or in service in selected state formations and institutions in 1944-1990, amending the Act adopted in 2009. The Act of 16 December 2016 is analyzed in the light of the standards of the European Convention on Human Rights (ECHR), including relevant standards on coming to terms with the past as an element of transitional justice. The examination concludes that there is a discrepancy between the rationale for adopting this legislation in Poland, namely to reckon with the communist past and as such increase social trust in state institutions, and the legal solutions contained in the 2016 Act.

Anisotropy of variations of Polish mineral deposit parameters is rarely the subject of interest of geologists who carry on the assessment projects . However, if the anisotropy is strong its description and mathematical modeling are rational and justified as it may affect the accuracy of many calculations suitably for mining geology and mining engineering, e.g. estimation of resources and grade of particular raw-material, interpolation of deposit parameters values and construction of their contour maps, designing of optimum grade mining operations or densification of sampling grid. In geostatistics anisotropy is described with directional semivariograms which represent average variability of values of particular deposit parameter in various directions, depending on the distance between sampling sites. Convenient graphic presentation of anisotropy is map of directional semivariograms and good mathematical presentation are functions describing the anisotropy models.

The paper presents the results of geostatistical descriptions of various anisotropy types in selected examples of Polish mineral deposits. Taking into account the spherical variability model, the influence of anisotropy on the results of deposit parameters estimations has been theorized for both the interpolation point and calculation block (area). It was found that anisotropy is effective for parameters estimation if three mutually interrelated factors are considered: power of directional diversification of parameters variation, contribution of random component to total, observed variation of parameters and the range of semivariograms (autocorrelation) of parameter referred to the average sampling grid density.

The results demonstrate that anisotropy influences much more the estimations of parameters value in interpolation points than those of average values of parameters calculated for particular parts of deposit (calculation blocks). Moreover, anisotropy is unimportant when the random component of variability dominates the overall variability of analyzed parameter. Therefore, the simpler, isotropic variability model can be applied to geostatistical estimations of deposit parameters.

The problem of the migration of metal ions in the environment remains a current problem in light of the quality of obtained crops. The necessity of more and more frequent use of alternative sources of biogens in the form of waste substances, poses a threat of loading significant amounts of metals into the soil – including heavy metals harmful to human health and life. The article discusses a significant problem, namely the comparison of the results of the environmental impact of waste, obtained on the basis of legally authorized leaching tests (three-stage leaching test according to PN-EN 12457:2006), with results obtained from sequential chemical extraction (performed in 4-step chemical extraction developed and recommended in European Union countries by Communities Bureau of References – BCR). The study covered an investigation of industry fly ash from the combustion of lignite, in which Cu, Zn, Cd, Ni, Pb, Cr, Na, K, Li concentrations and loads were calculated. A mobility of analyzed elements was established on this basis. From heavy metals, the highest values in fraction I were noted for nickel and copper and zinc as well as nickel were noted for fraction IV . Peaking values of electrolytic conductivity in eluates was created by high concentrations of macroelements (Na and K). These tests confirm that the leaching tests used for their application in the natural environment indicate such concentrations at the highest levels that can be obtained at the first or second stage of sequential chemical extraction, and thus their proper full environmental impact is not known.

All the restructuring programs that have been implemented in Polish bituminous coal mining as a primary way to reduce mining costs relied on the increased concentration of mining operations. Those efforts especially involved a significant simplification of existing or newly developed structures for accessing or cutting the deposits intended for extraction; implementation of advanced mining technologies, and upgrading of machines used in mine faces. However, in order for these to deliver the expected results, it is important to organize mining operations in such a way so that those advanced, and usually very expensive, mining-related fixed assets – machinery and equipment – are used sensibly. In order to define a reasonable production capacity of each longwall face, it is necessary to apply various criteria related to the mining and technical aspects, occupational safety, and organizational and economic aspects. Only then will it be possible to evaluate the expected effects in the field of concentration of mining in a mining company and in the mines which form part of such enterprises. Decisions in this respect should always be made at the planning stage, based on analysis results. The aim of this article is to explore the factors involved in concentration-related decision-making in mining companies, including the underlying mining/technical, organizational, and economic/ /financial aspects. A mining company is understood as a group of related mines, the primary business operations of which include bituminous coal mining, processing, and trading.

This article deals with the issue of home-country receptivity towards social remittances from the pro-fessional diaspora. Social remittances from the highly skilled depend on a favourable context for knowledge and skills transfer in their home countries, a context that could be summarised by the term ‘country receptivity’. This article is based on the case of Lithuania. The data comes from a series of semi-structured interviews with members of the skilled diaspora and representatives of institutions that are involved in programmes targeted at the diaspora. The analysis reveals several groups of obstacles to successful knowledge and skills transfer that may be understood as issues of country receptivity: mistrust of government by diaspora members, expressed as a belief that it is not interested in results and thus involvement of the diaspora, but rather in pursuing particular political objectives; lack of openness towards other experiences (unwillingness of institutions at different levels and in various fields to open up to new opinions, approaches and experiences brought by Lithuanians from abroad); bureaucratic and institutional impediments (inability of institutions to adapt their procedures in the interests of co-operation; slowness and ineffectiveness when dealing with requests or reacting to initiatives from the diaspora); and a perceived negative opinion (unwelcoming attitude) in society towards Lithuanians from abroad. The interviews also provide some tentative evidence of a ‘feedback loop’, through which the involvement of the diaspora causes changes in the home-country institutions. In the discussion part of the article, possible causes and implications of these obstacles are considered.

Analytical relations, describing the electrical fields of cylindrical piezoceramic radiators with circular polarization as a member of the cylindrical systems with the baffle in the inner cavity, using the related fields method in multiply connected regions were obtained. Comparative analysis of the results of numerical experiments performed on the frequency characteristics of the electric field of the radiating systems for different modes of radiation allow to establish a number of subtle effects of the formation of the electric field of radiators.