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The dry-EDM process is environmentally neutral and enables to obtain good machining accuracy and relatively good surface quality. On the other hand, the application of dry-EDM is limited due to problems with the effective dissipation of heat from the machining zone and instability of material removal. The machining of Inconel 625 alloy was carried out in the carbon dioxide as a dielectric supplied to the machining gap through the channel in the working electrode, in the milling kinematics. In one of the investigated variants, the workpiece was submerged additionally in the deionized water during machining. The main aim of this research was to determine an influence of EDM milling in carbon dioxide with and without external workpiece cooling on the workpiece technological surface integrity ie. roughness, morphology and microhardness. The pulse time, current amplitude and gas pressure were selected as investigated parameters. Obtained results indicate significant differences in surface layer properties for both investigated machining variants.

Background: The value of Open Science (OS) for the academic community and society has been becoming more evident recently, especially during the COVID-19 pandemic. Nevertheless, significant challenges regarding its implementation arise that are likely to affect researchers, especially those in early career stages. Hence, monitoring early-career researchers’ views, knowledge, and skills on OS and related policies, is crucial for its advancement. The main aim of this exploratory study was to gain new perspectives regarding the awareness of and attitudes towards OS and related practices having in consideration geographical, economic and research career variables. Methods: The survey was conducted during May-August 2020 as part of a collaboration between Eurodoc and the Open Research Europe project. The data from the survey were analyzed by European region, Gross domestic product, Gross domestic expenditure on research and development as a percentage of gross domestic product, field of study, and career stage. Results: The awareness and positive attitude regarding OS, specifically among early-career researchers, is high in Europe. However, there are significant career stage group differences in views and knowledge about OS. Generally, awareness and positive attitude tend to increase with increasing career seniority. Regarding European regions, we spotted three main groups sharing similar awareness levels and attitudes: researchers in Western Europe - the most informed group towards OS; researchers in northern, central, and southern Europe - a moderately informed group with some minor differences; and researchers in eastern Europe - the least informed group, whose opinions deviate the most. Conclusions: We found that there is an “evolution of needs and focus” regarding scientific publishing: researchers in most European regions are in different stages of transition from the competitive to collaborative levels, while researchers in eastern Europe are largely beginning their transition to the competitive level.

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This paper investigates the commodity price effects upon GDP growth and nominal effective exchange rate (NEER) dynamics in several Central and Eastern European (CEE) countries (the Czech Republic, Hungary, Poland and Romania). Our main finding is that an increase in the world commodity price index is a factor behind a uniform exchange rate appreciation across all countries, with an acceleration in output growth in the Czech Republic and Hungary. Except for the Czech Republic, higher commodity price volatility is associated with exchange rate depreciation, while being neutral with respect to output growth. Among some other results, exchange rate dynamics seems to be independent of output growth in three out of four countries, while the effects of a foreign demand shock as proxied by Germany's industrial production are quite homogeneous across nations.