535 research outputs found

    Modeling of the Labour Force Redistribution in Investment Projects with Account of their Delay

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    The mathematical model of the labour force redistribution in investment projects is presented in the article. The redistribution mode of funds, labour force in particular, according to the equal risk approach applied to the loss of some assets due to delay in all the investment projects is provided in the model. The sample of the developed model for three investment projects with the specified labour force volumes and their defined unit costs at the particular moment is given

    Principles and experience of justification of ecological representativeness of Emerald network potential sites

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    The article presents the results of the multi-method research to provide justification of Emerald network potential site, which meets the requirements of environmental representativeness. Flora and vegetation of the core natural habitat, species composition and prevalence of the species of European importance and from the Red books of the country and region, as well as the habitats of European importance were systematized with the use of methods of botanical and geobotanical studie

    The HVEDC Method for the Production of Tungsten Based Alloys

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    The purpose of this study is to investigate HVEDC method for the production of tungsten-based alloys. It is established that the method of high-voltage electro-discharge compaction, in addition to some economic and time benefits, contributes to a minimal change in the microstructure and does not lead to grain growth, therebyimproving mechanical characteristics. Keywords: powder metallurgy, tungsten heavy alloys, high-voltage electro-discharge consolidation

    Fast rate of evolution in alternatively spliced coding regions of mammalian genes

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    BACKGROUND: At least half of mammalian genes are alternatively spliced. Alternative isoforms are often genome-specific and it has been suggested that alternative splicing is one of the major mechanisms for generating protein diversity in the course of evolution. Another way of looking at alternative splicing is to consider sequence evolution of constitutive and alternative regions of protein-coding genes. Indeed, it turns out that constitutive and alternative regions evolve in different ways. RESULTS: A set of 3029 orthologous pairs of human and mouse alternatively spliced genes was considered. The rate of nonsynonymous substitutions (d(N)), the rate of synonymous substitutions (d(S)), and their ratio (ω = d(N)/d(S)) appear to be significantly higher in alternatively spliced coding regions compared to constitutive regions. When N-terminal, internal and C-terminal alternatives are analysed separately, C-terminal alternatives appear to make the main contribution to the observed difference. The effects become even more pronounced in a subset of fast evolving genes. CONCLUSION: These results provide evidence of weaker purifying selection and/or stronger positive selection in alternative regions and thus one more confirmation of accelerated evolution in alternative regions. This study corroborates the theory that alternative splicing serves as a testing ground for molecular evolution

    Development of Filters with Minimal Hydraulic Resistance for Underground Water Intakes

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    The development of modern structures of water wells filtering equipment with enhanced performance characteristics is a vital task. The purpose of this work was to create filters for taking water from underground sources that have high performance, long service life, quickly and economically replace or repair in case of performance loss. The selection of the filter device must be made taking into account all the geological features of the aquifers, the performance characteristics of the filter devices and the size of the future structure. Filter equipment designs for water intake wells have been developed in this study. These filters have low hydraulic resistance, high performance and are easy to repair. This article presents the dependency of flow inside the receiving part of the well, the dependence of filter resistance at various forms of the cross section of the filter wire and the selected optimal section. The paper proposes a method for selecting the optimal cross-section of the filter wire used in the manufacture of a water well filter. The proposed structures of easy-to-remove well filters with increased productivity allow replacing the sealed well filter with a new one easily, reducing capital and operating costs, and increasing the inter-repair periods of their operation. Based on the presented method, examples are given for selecting the parameters of the filter wire cross-section. The above calculations showed that the use of the hydraulic resistance criterion at the design stage of underground water intakes can significantly reduce the cost of well construction. Studies have found that the minimum hydraulic resistance to ensure maximum filter performance is achieved when using filter wire teardrop and elliptical shapes

    Issues of Cluster Formation in East Germany

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    The article is devoted to modern innovation policy in Germany. The German government considers stimulation of cluster structures as a necessary condition for achieving high-tech development of the country, so the cluster policy is a component of German innovation policy. The article considers the concept of three-level organization of clusters, quantifies the value of regional asymmetry in investment in innovation. Based on the classification of clusters by M. Porter, using the methodology of the analysis of cluster sectors of the European Cluster Observatory, the author’s method of the substantive typologization of clusters by L. Markov and the model of organizational development proposed by D. Napolskikh, the identification of East German clusters was conducted, the clusters most significant for economic development of the East German states were identified. Their brief characteristics were presented and the degree of maturity was determined. The results of the research conducted by the authors of the article and the report of European experts Franco, S., Wilson, J., concerning Saxony’s clusters were compared, and recommendations on conducting cluster policy in structurally weak regions were given. The author’s maps illustrating the results of the study are included in the article

    Investment attractiveness of small innovational business under the conditions of globalization and integration

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    Purpose – The purpose of the article is to study the problems and perspectives of increase of investment attractiveness of small innovational business under the conditions of globalization and integration. Design/methodology/approach – With the help of corresponding methods of conduct of scientific research, the work performs comparative analysis of approaches to determination of small innovational business and SWOT analysis of attraction of investments into development of small innovational business under the conditions of globalization and integration. Findings – The authors determine peculiarities of functioning and development of small innovational business under the conditions of globalization and integration and determine problems and perspectives of attraction of investments into development of small innovational business under the conditions of globalization and integration. Originality/value – The most important item of scientific novelty of this work is the proprietary mechanism of increase of investment attractiveness of small innovational business under the conditions of globalization and integration.peer-reviewe

    Modeling diurnal variations of the IAR parameters

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    Business administration as a basis for development of global entrepreneurship

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    The purpose of the article is to determine the role and meaning of business administration in development of global entrepreneurship. The work uses the proprietary methodology of evaluation of global competitiveness of enterprise and the proprietary methodology of evaluation of efficiency of business administration of enterprise, as well as method of correlation analysis. The authors determine the role of business administration in management of factors of development of global enterprise and offer the proprietary structural and logical model of organization of the process of business administration of global enterprise as a perspective tool for provision of global competitiveness of business and development of global entrepreneurship on the whole. The authors come to the conclusion that business administration is a basis for development of global entrepreneurship and plays an important role in this process, which consists in managing other internal and external factors of functioning of global business.peer-reviewe

    Bilingualism and biculturalism and teaching of modern languages: point of view of a teacher of french from Russia

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    More than 50% of the world's inhabitants are bilingual, and this percentage is expected to be increasing due to the increasing global mobility. Some people are bilingual because of the characteristics of their families, others because of migration, or because they live in a border area or a country that has several languages. Bilingualism is extremely widespread in Russia and in France. In this article, the actual and complex phenomenon of bilingualism in the contemporary cultural situation, in particular in the teaching of foreign languages, is considere
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