This study analyzes and discusses key strategies for digital education. It begins by examining and defining several key concepts, including global citizenship, digital citizenship, computational thinking, informational thinking, and systemic thinking. Moreover it analyzes the role of leadership in the age of digitalization and advocates for panoramic leadership. Then it compares STEM-based education with STEAMbased education extended by panoramic leadership – STEAMPL.

Every developing country is beginning to rely on “green” energy in connection with environmental problems, including the global warming of our planet. It is expected that in the future, the production of electricity using the conversion of sunlight would take the dominant place in the energy infrastructure around the world. However, photovoltaic converters mainly generate intermittent energy due to natural factors (weather conditions) or the time of day in a given area. Therefore, the purpose of this study is to consider options for eliminating the interrupted nature of the operation of a solar installation through innovative additional applications. To achieve this goal, issues of the prospect of using energy storage devices and the choice of the most efficient and reliable of them are considered, as are the environmental friendliness of accumulators/batteries and the economic benefits of their use. The results of the analyses provide an understanding of the factors of using existing technologies with regard to their technical and economic aspects for use in solar energy. It was determined that the most common and predominant types of energy storage are lithium-ion and pumped storage plants. Such accumulation systems guarantee high efficiency and reliability in the operation of solar installation systems, depending on the scale of the solar station. Storage devices that are beginning to gain interest in research are also considered – storage devices made of ceramics of various kinds and thermochemical and liquid-air technologies. This study contributes to the development of an energy-storage system for renewable energy sources in the field of technical and economic optimization.

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.

The Klein et al. Unidimensional Target neutral (K.U.T.) commitment measure is a promising short self-report measure forming a counterpoint to the popular multidimensional approach to the assessment of commitment. The goals of the present study were to examine the construct reliability, convergent, discriminant, an incremental validity; and the measurement invariance (sex, education, job position) of the Polish version of K.U.T. The scale was evaluated using a sample of adults working for Polish organizations. Confirmatory factor analyses confirm original structure of the K.U.T.-PL and its measurement reliability and validity. Moreover, performed analysis showed that K.U.T.-PL was invariant across sex, education, and job position group. In conclusion, the findings confirm that the Polish adaptation of the K.U.T. presents solid psychometric properties and initial evidence of validity.

The paper presents two alternative proposals for processing kinematic modular networks. The first method employs the idea of multi-group transformation which may be reduced to setting up a system of conditional equations with unknowns. The kinematic parameters (point motion velocities) are in this case determined after the observations are adjusted, together with point coordinates. The other proposal is based on the classic idea of the parametric method. The theoretical relationships for functional models of the network adjustment for each of the methods have been provided. The practical conditions have been presented for the application of the proposed models (methods) in constructing detailed computational algorithms. The modular network technology may be an appropriate method of geodetic determination of displacements, especially in difficult terrain conditions (slopes, trees, unfavourable exposition to satellite signals).

The paper discusses the global algorithm of broken line simplification, that: does not depend on parameters set by a map editor and maintains the accuracy of the 0-1 Instruction (General principles of surveying practice) of the Head Office of Geodesy and Cartography, Poland, for each map scale (smaller than the source map scale). In the discussed process of line simplification parameters depend on the map scale and on the smallest length of an elementary triangle (this length is a measure of the ability of the drawing recognition). In the process of simplification performed with the use of the discussed algorithm, the same shape of a line is ensured (maintaining the ability of the drawing recognition), since generalised data differ with the bigger or smaller range of scales from the source data. Besides, limits of intervals of generalisation thresholds have been specified, which are required for the process of automated selection of cartographic presentation methods exhibiting the results of line simplification.

This article addresses issues of mobility and place-making among CEE-born young people who migrated from Poland and Romania to Sweden as children (up to the age of 18). Previous research on intra-EU mobility in other destinations posits this group as 1.5-generation migrants who, due to their mobility at a formative age, experience duality and in-betweenness – with specific effects on their social and familial lives. Inspired by this research, our article examines how mobility to Sweden at a young age (re)shapes young peoples’ connection to and meaning-making of places post-migration. Drawing on two-step qualitative interviews with 18 adolescents and young adults from Poland and Romania, as well as on drawings and photographs as part of the visual materials produced by the participants, the article makes two contributions. First, it integrates the scholarship on children and youth mobility, translocalism and place-making but also deepens these conceptualisations by underlining the role of memories and feelings in young people’s place-making processes. Second, the article suggests that visual methodology is a valuable tool with which to capture the embodied and the material practices of translocal place-making over time. Our findings reveal that most of these young people continue to strongly associate with places from their childhood and country of origin. For some, these places symbolise ongoing transnational practices of visits and daily communication while, for others, these are imaginary places of safety and a right place to be. The findings also highlight the importance of memories and feelings in creating transnational connectivity between the countries of origin and Sweden, as well as in developing coping strategies against the social exclusion and misrecognition which some young people may experience in their new living spaces.

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.

The paper presents a theoretical analysis of thermal energy storage filled with phase change material (PCM) that is aimed at optimization of an adsorption chiller performance in an air-conditioning system. The equations describing a lumped parameter model were used to analyze internal heat transfer in the cooling installation. Those equations result from the energy balances of the chiller, PCM thermal storage unit and heat load. The influence of the control of the heat transfer fluid flow rate and heat capacity of the system components on the whole system operation was investigated. The model was used to validate the selection of Rubitherm RT62HC as a PCM for thermal storage. It also allowed us to assess the temperature levels that are likely to appear during the operation of the system before it will be constructed.

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.

The article presents the approach to the design process of acoustic panels based on the scientific research. This approach is based on combining the technical and the design competences to develop the innovative product value for the concept of acoustic panels. The article presents the concepts of two new acoustic panels – an absorbing and scattering panel and a panel reflecting sound waves. The first part of the article presents the starting point for the presented project – the acoustic research and the inspiration for both types of presented solutions. Next, the materials possible to use were discussed, which could reproduce the natural acoustic properties of the lava and glacier caves. The next part presents consecutive stages of the product development in a modern form, ensuring the expected acoustic properties. The last part of the article presents a fully functional solution and proposes further research and development directions.

The contents or Cd, Pb. Cu, Mn, Zn, Ni and Fe in different organs or Typha latifolia L., coming from six sites selected within Jezioro Wielkie (Leszczyńskie Lakeland in western Poland), were determined. Three groups or metals, cach with a different accumulation pattern within the plant were distinguished in this study. Pb, Zn and Cu were found to be the least mobile and shown the following accumulation scheme: roots> rhizomes> lower leave part> top leave part. 13y contrast, Mn, a metal which is both easily transported in plants and accumulated in green plant organs, exhibited the following accumulation scheme: roots> top leave part> lower leave part> rhizomes. Ni, Cd and re were accumulated by the cattail as follows: roots> rhizomes> top leaf part> lower leaf part. The fact that Tvpha tatifol io L. had the highest proportion 01· all the metals studied in its roots can suggest that some kind of protection barrier exists which prevents toxic compounds permeating from that part or this plant to its rhizomes and its aerial parts. The confirmation or this thesis requires some further research.

The world population, and thus the need for food, is increasing every day. This leads to the ultimate question of how to increase food production with limited time and scarce land. Another obstacle to meet the food demand includes the stresses a plant goes through. These may be abiotic or biotic, but the majority are biotic, i.e., plant diseases. The major challenge is to mitigate plant diseases efficiently, more quickly and with less manpower. Recently, artificial intelligence has turned to new frontiers in smart agricultural science. One novel approach in plant science is to detect and diagnose plant disease through deep learning and hyperspectral imaging. This smart technique is very advantageous for monitoring large acres of field where the availability of manpower is a major drawback. Early identification of plant diseases can be achieved through machine learning approaches. Advanced machine learning not only detects diseases but also helps to discover gene regulatory networks and select the genomic sequence to develop resistance in crop species and to mark pathogen effectors. In this review, new advancements in plant science through machine learning approaches have been discussed.

The arc suppression coil determines whether it can effectively extinguish the arc when it is grounded in the neutral non-effective grounding system. An artificial grounding test is an importantway to verify its performance. In this study, 13 substations with the 10 kV system in the Ningxia areawere selected and considered. Based on the artificial single-phase grounding test, the residual current, the compensation current and the off-resonance degree were measured in the arc suppression coil, and the performance of the arc suppression coil in the 10 kV system was verified. The experimental results show that the error of arc suppression coil automatic measurement is large, the off-resonance degree is large, the resistive component in the compensation current is excessive, the harmonic component exists in the compensating current and capacitive current. To solve these problems, this paper puts forward the corresponding countermeasures for reference.

This research analysed the availability of phytoplankton and the growth rate of Vannamei shrimp in relation to water quality changes. The research was carried out in February–March 2021 for a half cycle of shrimp cultivation in two ponds of the Brackish Water Fish Culture Probolinggo Laboratory in Probolinggo, East Java, Indonesia. The research used a descriptive method and included a survey. Sampling was made every two weeks for two months. Nine parameters were measured and ten shrimps were taken for a specific growth rate ( SGR) measurement once per sampling. Data were analysed using the principal component analysis (PCA) and canonical correspondence analysis (CCA). Secondary data of water quality were added for the PCA. The results show that the phytoplankton found in the first pond consisted of Chlorophyta, Chrysophyta, and Cyanophyta, whereas the phytoplankton in the other pond included Chlorophyta, Chrysophyta, Cyanophyta, and Dinophyta. The abundance of phytoplankton ranged from 12–80∙10 ³ cell∙cm ^–3, which indicated eutrophic waters. The PCA demonstrated that pH, nitrate, and total organic matter (TOM) significantly influenced phytoplankton abundance in the pond. In addition, water quality parameters, such as temperature, transparency, salinity, nitrite and phosphate levels, were tolerable in both ponds for the growth of shrimps. However, the level of pH was lower than the aquaculture quality standard, whereas those of nitrate, ammonia, and TOM were higher. The growth rate of Vannamei shrimp increased by 0.76–7.34%∙day ^–1.