Mobile lidars. Influence of external mechanical actions on accuracy of lidar aiming

The questions of designing mechanical system load-bearing elements «lidar radiator-lidar basis-automobile» in order to reduce external mechanical effects on lidar aiming accuracy have been considere

Checklist of longicorn beetles (Coleoptera, Cerambycidae) of Omsk Region (Russia)

An annotated check-list of the longicorn beetles of Omsk Region is given. The list based on literature data and collecting materials of authors. 41 species are new to the fauna of Omsk Region

Moeda digital do banco central e aplicações do blockchain na Rússia

Trabalho Final do Mestrado em Economia apresentado à Faculdade de EconomiaA trabalho de projecto de mestrado dedica-se ao estudo do potencial de desenvolvimento do blockchain e da moeda digital na Federação Russa. O objetivo do trabalho de projecto de mestrado consiste na identificação das principais oportunidades e obstáculos à potencial utilização das tecnologias blockchain e criptomoedas na Federação Russa.Para cumprir o objetivo colocado vê-se necessário realizar as seguintes tarefas:- apresentar a característica geral do blockchain e da moeda digital;- descrever a regulação legislativa das tecnologias de blockchain e da moeda digital;- analisar as características particulares de utilização das tecnologias de blockchain e moeda digital na Federação Russa;- analisar o papel potencial das tecnologias de blockchain e moeda digital na Federação Russa.O trabalho tem por objeto de estudo as tecnologias de blockchain. A matéria do estudo é a potencial utilização das tecnologias de blockchain e moeda digital.A base teórica e metodológica para este estudo das tecnologias blockchain e criptomoedas na Federação Russa foi recolhida das fontes de literatura científica, instrumentos normativos legislativos, dados de agências internacionais, fontes digitais, entre outras. Os dados usados neste estudo são os dados secundários encontrados em artigos e estudos que, por sua vez, aproveitaram-se das vantagens de acesso a fontes online, tais como charts de blockchain, CoinMarketCap, Cointelegraph, Bitcoin.com, Cryptocoinsnews e DeCenter, bem como bases de dados do Banco Central da Federação Russa. O estudo também apresenta a análise descritiva de dados e análise dos dados de séries temporais.Estruturalmente o trabalho é composto pela introdução, quatro capítulos dedicados aos temas descritos acima, a conclusão e a bibliografia. No primeiro capítulo apresenta-se a descrição geral do blockchain, sendo avaliadas as suas capacidades tecnológicas e as áreas de aplicação. No segundo capítulo analisa-se a atitude assumida pelo estado russo perante a tecnologia de blockchain, nomeadamente através de regulação legislativa, as restrições e os problemas. O terceiro capítulo é dedicado ao desenvolvimento de criptomoedas, à utilização do sistema de pagamentos e das aplicações descentralizadas em território da Federação Russa. O quarto capítulo dá destaque especial às principais soluções e perspectivas de desenvolvimento das tecnologias de blockchain no setor financeiro da Federação Russa.A trabalho de projecto apresenta os seguintes contributos para a literatura científica:1. Foi proposta a sistematização das principais oportunidades e obstáculos para desenvolvimento das tecnologias blockchain e da moeda digital na economia digital da Federação Russa. Graças ao programa “Economia digital da Federação Russa” que tem por objetivo principal garantir a implementação acelerada das tecnologias digitais na economia e segurança social, as tecnologias de blockchain, tal como outras tecnologias transversais, são as tecnologias-chave que incluem todas as funcionalidades da tecnologia distribuída de livro-razão2. Foi avaliada a importância e as perspectivas de desenvolvimento de legislação normativa para evolução da tecnologia de blockchain e moedas digitais face à importância de utilização destas tecnologias no futuro, tanto no mercado nacional como internacional.3. Foi feita a avaliação das consequências de desenvolvimento destas tecnologias até 2024. Esta avaliação baseou-se na descrição do impacto dos índices de liderança tecnológica, desenvolvimento económico e progresso social cuja evolução será associada à utilização da tecnologia de blockchain.O trabalho contém 8 tabelas e 1 figura. A trabalho de projecto de mestrado tem 58 páginas.The Master thesis is devoted to a research of the potential development of blockchain technologies and digital currencies in the Russian Federation.The purpose of the Master thesis is identification of main opportunities and obstacles for the potential use of blockchain technologies and cryptocurrencies in the Russian Federation.For achievement of a goal, I attempted to complete the following tasks:- give a general description of blockchain technologies and digital currencies;- describe the legislative regulation of blockchain technologies and digital currencies;- analyze the specifics of using blockchain technologies and digital currencies in the Russian Federation;- assess the potential role of blockchain technologies and digital currencies in the Russian Federation.Research object in the work are blockchain technology. The subject of the study is the potential use of blockchain technologies and cryptocurrencies.The theoretical and methodological basis for this study of blockchain technologies and cryptocurrencies in the Russian Federation was collected from scientific literature, normative legal acts, data from international agencies, electronic sources and others. The data used in this study is secondary data taken from articles and studies that, in turn, took advantage of the use of online resources such as Blockchain Charts, CoinMarketCap, Cointelegraph, Bitcoin.com, Cryptocoinsnews and DeCenter, as well as the Central Bank of Russia database. This study also presents descriptive data analysis and time series data analysis.The structure of this work consists of an introduction, four chapters addressing the four topics listed above, a conclusion and a reference list. The first chapter gives a general description of the blockchain, discusses its technological capabilities and applications. The second chapter examines the attitude of the Russian state to blockchain technology, namely through legislative regulation, restrictions and problems. The third chapter is devoted to the development of cryptocurrencies, the use of a payment system and decentralized applications on the territory of the Russian Federation. In the fourth chapter, special attention is paid to the main decisions and prospects for the development of blockchain technologies in the financial sector of the Russian Federation.This work contains the following contributions to the literature:1. It offers a systematization of the main opportunities and obstacles for the development of blockchain technologies and digital currencies in the digital economy of the Russian Federation. Thanks to the Digital Economy of the Russian Federation program, the main goal of which is to ensure the accelerated introduction of digital technologies in the economy and in the social sphere, blockchain technologies, along with other end-to-end technologies, are key today and include all the functions of a distributed registry.2. It assesses the relevance and prospects of the development of regulatory legislation for the development of blockchain technology and digital currencies, due to the economic importance of the further use of these technologies domestically and internationally.3. It provides an estimate of the effects from the development of these technologies by 2024. The basis for this is a description of the impact of technological leadership indicators, economic development and social progress, the achievement of which may be influenced by the use of the blockchain technology. The work contains 8 tables and 1 figure

Determination of thermophysical characteristics of materials by temperature measurements on the line of a specimen's conjugation with a half-space

Consideration has been given to the coefficient inverse heat conduction problem for determination of thermophysical characteristics of a material by temperature measurements on the line of a specimen's conjugation with a semiinfinite layer of another material with known thermophysical properties. Accounting for heat sink in a thermophysical experiment makes it possible to raise the accuracy of determining the thermophysical characteristics of a material with preservation of its structure and to avoid the need for a laborious effort to ensure the adiabaticity of the specimen's back surface. Based on the analysis of sensitivity coefficients, measurement times have been identified that are the most informative for determining thermophysical characteristics. The proposed methodology removes limitations on the selection of a heating regime for a material and expands a Fourier-number-permissible measurement range.В ст. ошибочно: Zverev, V. A

Determination of the heat-transfer coefficient and temperature of gas flow via measurement of the material temperature

A procedure based on the solution of the inverse problem of heat conduction is presented for the calculation of the heat-transfer coefficient and the temperature of a steady state gas flow via the measurement of the temperature of a material of a heat-insulated plate without numerical differentiation or the smoothing of experimental data. The sensitivity of the solution to a change in the convective heat-transfer parameters is analyzed. The measurement times at which the experimental data contain the maximal information on the sought parameters and the minimal influence of measurement error on their determination were determined. The application of the technique does not require the selection of a material-heating regime and makes it possible to increase the accuracy of the determination of the convective heat-transfer parameter

Neutron diffraction effects before the B2 →\to B19 martensitic transformation in single crystal of binary TiNi based alloy

Experimental results of the microstructure changes of the B2 phase before the B2$\to$B19$'$ martensitic transformation are presented in the paper. The neutron diffraction patterns from the B2 phase of the Ti$_{49}$Ni$_{51}$ single crystal were obtained in the wide range of the reciprocal space. The neutron diffraction features in the [110]$_{\rm B2}$, direction and perpendicular to it are in details investigated in the work

Dating of the Tashtyk Cultural Remains from the Oglakhty Burial Ground (Southern Siberia)

The present research is focused on the dating of the Oglakhty burial ground, the key site of stage I of the Tashtyk culture. Despite the numerous well-preserved burials of that type investigated at the Oglakhty complexes, their chronological position has remained unclear. From the early 20th century until the present, 2 different time periods had been identified for the Tashtyk burials: (1) from the 1st century BC until the 1st century AD and (2) from the 1st until the 2nd century AD. New data obtained in the 1990s suggested a different age for Tashtyk burials, namely the 3rd-4th centuries AD. This considerable shift in chronology needed to be checked with independent data. The chronological position of one of the Oglakhty burials, tomb 4, has been investigated with the use of wiggle-matching, applied to wooden logs used in the construction of tomb 4. The resulting dates for this burial strongly suggest its age as being limited to the 3rd-4th centuries AD, which is corroborated by the archaeological dates of the imported artifacts found in the grave and which is in agreement with the chronological position of the Oglakhty site, as proposed by previous investigations.The Radiocarbon archives are made available by Radiocarbon and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform February 202

Kinetics and thermodynamics of hardening in systems MgO-H 2O and MgO-MgCl 2-H 2O

The kinetics and thermodynamics of formation of chloromagnesium cements, which involves magnesium oxide, the main component of metallurgical sludge produced in manufacture of magnesium, were studied. The rate constants, activation energy, frequency factor, and thermodynamic constants of the reactions in which crystalline hydrates of composition 3Mg(OH) 2·. MgCl 2·8H 2O and 5Mg(OH) 2·MgCl 2·2H 2O are formed were calculated.The study was financially supported by the R&D Program Research by Higher School in Priority Areas of Science and Technology of the Ministry of Education of the Russian Federation and by an individual grant for support of research by postgraduate students at higher school institutions of the Ministry of Education of the Russian Federation (A03-3.21-451)