bluuebunny/crossref_metadata_2025_split huggingface dataset:
Experimental Study of Radon Content in Networked Natural Gas under the Conditions of Yakutsk
Authors: Stepanov V E , Naumova K A 
Published: April 2020

Abstract
Analyzed the problem of radon safety in residential areas with gas stoves of various companies. Volumetric radon concentrations were obtained and annual dose rates were calculated. Measurements were carried out with two instruments: on the radon gauge Alpha Guard and on the PPA-01M-03 manufactured by NTM - Protection. Samples of networked natural gas for measurement were taken using an air sampler [1], [2]. A device and methods for sampling methane from domestic gas cookers in the conditions of the city of Yakutsk have been developed. The sampler consists of a silicone hose with a tubular tip with a solid cap. Silicone hose attached to the standard air sampler with two fittings of the company NTM Protection. The divider and the burner are removed from the tile; the tube with the cap is pressed tightly against the iron gas-conducting pipe. The methane launch valve opens to the stove. A flexible tube is put on the loose fitting and lowered into a bowl of water to control the gas outlet. Experimentally chosen time to achieve the maximum volumetric concentration of radon in the sampler for air. The obtained value of radon volumetric activity is: 116 ± 27 Bq/m3
Isotopic-Geochemical Features of the Generating of the Precious Metal Formations of the Jiamusi-Khanka Graphite-Bearing Province
Authors: Molchanov V P 
Published: April 2020

Abstract
Numerous occurrences of the precious metal mineralization located solely in the Jiamusi-Khanka province were detected within a single zone of the regional graphitization with ten kilometers submeridional strike towards the adjacent territories of the Primorsky krai (Russia) and the Heilongjian province (China), all the above said findings being obtained with the participation of the authors of the present scientific article. There are features of Dalnerechensk group (with Filinskoye being the largest of them), deposits of of Lesozavodsk group (Tamga, Turgenevo) and graphite-ore giant of Liumao Mashan group of the Heilongjian province in the Northern, central and Southern sides of this province respectively. The results of the isotopic-geochemical study of the graphite, the sulfides and the carbonates of these deposits, the formation of which has a common history with the one of the precious metal mineralization, indicate the participation of deep derivated recomposed fluids and the light isotopic-biogenic matter of the host rocks in the ore formation. Besides, the carbon and the oxygen from at least two more isotopic-contrast sources intruded into the ore-forming system. Some minerals were formed under the influence of the intrusive acidic melts on the carbonate rocks, other one were generated due to the involvement of the meteoric waters in the ore formation.
Evaluation of Road Safety Measures Efficiency in Conditions of Uncertainty
Authors: Korchagin V , Chernishov V , Klyavin V , Rizayeva J , Baryshev N , Dvurechenskaya A 
Published: April 2020

Abstract
Scientific approaches and methods are considered of the social-economic evaluation of the efficiency of a set of measures on improving road safety in conditions of uncertainty. The risk levels for the adopted social-economic indicators were determined with the help of expert evaluation presented as a fuzzy number. In order to make a decision on a set of measures to be implemented, the scenario method, fuzzy linear programming, production rules were used. An integral indicator of the social-economic efficiency of measures is proposed as an objective means of assessment.
Disaster Insurance Decision Support System
Authors: Bokadarov S A , Kravchenko A S , Peregudov A N , Kulakova N G , Kalach A V 
Published: April 2020

Abstract
The article is devoted to the improvement of the system of support for decision-making in the insurance of jams against emergencies. The article pays special attention to the application of the Housing Insurance Act. Information on the number of insured dwellings provided. The algorithm of integral evaluation of the protection object proposed, which allows the insurance company to calculate the cost of the insurance policy.
Express Method for Estimating Particle Isometricity for Quality Control Ferrosilicium
Authors: Timofeev A S , Dvoichenkova G P , Chernysheva E N , Popadin E G 
Published: April 2020

Abstract
Currently, in connection with the expansion of the volume of implementation of the dense medium separation (DMS) process at the processing plants, it becomes necessary to solve the problem of quality control of the ferrosilicon used, the relevance of which is due to an increase in the instability of the initial technological properties of ferrosilicon supplied by various manufacturers. This paper presents an express method for controlling the quality of ferrosilicon, the use of which allows, using data on the bulk and true density of ferrosilicon, to evaluate the isometricity of its particles.
Prospects for Public-Private Partnerships in Seaport of Khabarovsk Territory
Authors: Gudkova E V , Zaostrovskikh E A 
Published: April 2020

Abstract
Since theoretical approaches to the development of seaports have been actively explored over the past 30 years, the role of the port region is attracting increasing attention, especially in the spatial economy. This article, using the example of the sea port Vanino (Khabarovsk Territory), examines the regionalization of the seaport in the context of public-private partnership. To this end, an analysis of the theory of the development of the seaport in the port region was carried out. The basic models of public-private partnerships to ensure sustainable development of the port region are considered. The results of the study for the Vanino seaport show that PPP makes the stakeholder environment more difficult to manage, due to the growing importance of stakeholders. The implementation of coal projects under PPP in the next 10 years will not have a significant impact on the port region. As the economic effects for the port region will gradually decrease, accordingly, the negative consequences will increase. Therefore, the current “port-owner” model is inefficient. The “port-instrument” model may be the most acceptable for the sea port of Vanino, when the port administration is the owner of the infrastructure and performs the whole range of tasks necessary for the functioning of the port system, and the private sector is engaged in cargo operations.
Modern Methods of Ensuring Sustainable Development of Rural Territories at the Regional Level
Authors: Yurkova M S , Firsov A I , Trofimova V I , Ermakova G A 
Published: April 2020

Abstract
The concept of sustainable development was widely adopted at the global level of development of society in the world. At the same time transition to sustainable development and giving of irreversible character to it are impossible without complex development of rural territories. In national economy it is necessary to begin development with rise in agriculture. In modern operating conditions of the majority of regions of Russia and its rural territories, development of the methods providing their sustainable development is impossible without active state position on an institutional basis and also on the basis of social and innovative development of territories taking into account their features, the developed specialization and infrastructure. In this research four interconnected methods on ensuring sustainable development of rural territories on the example of the Saratov region are developed. The differential and production method is based on growth of efficiency of agrarian production at use of intensive technologies, increase in a share of crops of perspective highly profitable cultures depending on climatic and economic features of various microzones of the region, on technological re-equipment of branches of crop production. All this will allow to create internal funds of development of production and the social sphere of the village. The innovative and investment method is based on accumulation of means from different sources in regional fund and definition of the directions of the projects focused on development of infrastructure and increase in investment attractiveness and innovative activity. At initiation of projects by authorities, business structures, the population and granting means from Fund, various innovative and investment directions for rural territories taking into account branch specialization of areas and assessment of their requirements will develop. The method of improvement of social infrastructure of the village leans on the tools leading to improvement of infrastructure of municipal units depending on their territorial and branch accessory, level of financing of the social sphere and providing social and engineering infrastructure with objects. The structural and institutional method assumes improvement of management of sustainable development of rural territories and ensuring optimization of decision-making at all levels.
Economic Evaluation of the Production Efficiency of Chemical Substances and Chemical Products in Russia and in the Kemerovskaya Oblast
Authors: Konshina O A , Kiryukhina A N , Seklecova O V 
Published: April 2020

Abstract
Development of chemical industry in Russia is determined by the availability of the essential national resource sectors. The economic growth rate in the Russian economy depends on the efficient production of chemical substances and chemical products. Fluctuations of financial indicators for the chemical production in Russia in 2012-2017 show a positive trend. The development of the sector as a whole is subsequently affected by economic indicators of individual businesses in the regions. The Kemerovskaya oblast is one of the leading regions in terms of chemical substance and chemical product manufacturing with six chemical businesses operating there. Kemerovo Joint Stock Company Azot is in top five nitrogenous fertiliser manufacturers in Russia accounting for 1/3 of the total caprolactam produced in Russia. The economic efficiency evaluation of the Azot KJSC was conducted. The analysis of the performance of the business based on the processed public accounting data allowed to identify the critical points and growth drivers, the positive trends in enhancing the efficiency of a business and overcoming the crisis (negative net revenues in 2015). Better economic performance of a business finds its expression in the growing output, revenues, profit, rate of return and higher average annual cost of the capital assets The analysis showed that the trend within the chemical industry in the region is similar to the one on the national level.
Smart Cities in GCC: Comparative Study of Economic Dimension
Authors: Asmyatullin R R , Tyrkba Kh V , Ruzina E I 
Published: April 2020

Abstract
Due to high level of urbanization and economic growth rate of GCC countries the issues of smart cities development are becoming increasingly important for this region. The goal of this paper is to set a number of economic components that can influence the design, implementation and use of smart cities initiatives in GCC. The authors analyse the current strategies of smart cities in 6 countries (Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, UAE). As part of economic dimension authors analyse public expenditure on R&D, on education, national income, GDP growth rate in order to figure out challenges and prospects of developing smart cities in GCC
Innovation and Technological Development of the Feed Industry
Authors: Cheremushkin I V , Zaveva O V , Apalichina O A 
Published: April 2020

Abstract
This paper dwells upon the key factors of innovation and technological development in the feed industry. Today’s livestock farming builds upon feed use. When livestock is crammed in a small area while living on industrially made feed alone, its health, metabolism, and productivity degrade. The proposed technology for making well-composed feed blocks will boost the profits from selling the products while also improving the daily average weight gain in cattle. The obtained data are in favor of adding the feed additive to the cattle nutrition.
Strategic Change in the Enterprise: Foresight and Management
Authors: Merzlikina G S , Kozhanova T E 
Published: April 2020

Abstract
Mobility, flexibility for a change and innovations implementation are key features of small and medium-sized enterprises. However, unstable external and internal environments require developing more complex and sophisticated management systems of the enterprise. The authors see management carried out according to changes as the optimum for small and medium-sized enterprises. It is certain managerial decision-making and implementation machinery for adequate management decisions, which helps provide insight of future trends of organization’s development, what, in its turn, ensures economic stability and sustainability of organization’s development. Strategic change management includes evaluation and monitoring of indicators in areas of enterprise activity. The authors provide a matrix of criteria and economic performance of private strategies. In order to foresee and manage strategic change a dynamic model for strategic change management is given and represented in a table and a graph. Foresight involves creating an enabling area which is formed through changes in external and internal environments. Management involves evaluation of initial condition of strategic changes implementation and setting necessary actions and processes to reach an enabling area. This survey is theoretically and practically important as methodology and tools for successful foresight and management of strategic changes is devised.
Determination of Load-Speed Modes for Fluoroplastic Seals of Rotary Shaft by Temperature Limitation
Authors: Starostin N P , Vasileva M A 
Published: April 2020

Abstract
Unsteady temperature field in the lip seal of rotary shaft is determined by solving axisymmetric problem of thermal conductivity. Finite element method is used to compare mathematical models of thermal process with various assumptions. At the same time, function of frictional heat generation is modeled by set of concentrated heat sources. To seal filled fluoroplast-4, the validity of assumption of removal of almost all the heat released by friction into steel shaft is shown. Calculations show that for seals operating in low temperature conditions, it is necessary to consider dependence of thermophysical properties of seal material on temperature. To determine coefficient of convective heat transfer, known formulas, that consider its dependence on the sliding speed of the shaft, are used. Method for determining the load-speed regimes of polymer seals of rotary shaft according to temperature limiting, considering dependence of thermal properties on temperature and heat transfer coefficients on the sliding speed, is proposed.
High Frequency Vibrations Arising in System Wheel-Rail. Part II. The Influence of High Frequency Vibrations on the Structure of Rail Steel M76
Authors: Gridasova E , Nikiforov P , Talskikh K 
Published: April 2020

AbstractIn this paper, the influence of high-frequency vibrations in the wheel-rail system is studied, the main causes of their occurrence are described, the study of the structure of M76 rail steel at operating stress levels of 700 MPa and more is given. Investigated the microstructures of samples cut from the actual rails, following the action of high-frequency loading by means of optical microscopy and micro hardness testers.
Methods for the Structural Analysis of Highly Elastic Materials
Authors: Sheromova I A , Starkova G P , Starkov S V 
Published: April 2020

Abstract
The object of the research is highly elastic knitted fabrics, and the subject is the method of their structural analysis. The aim of the work is to develop a new method for the analysis of the structure of elastomeric materials, which makes it possible to study the parameters of highly elastic knitted fabrics’ structure in an equilibrium and stress-strain state, taking into account the assessment of the nature of its changes during various types of influences on the material. The prospects and the possibility of applying the methods of direct observation of the material’s microstructure by means of optoelectronic microscopy and the existing technical solution for their implementation in analyzing the structure of highly elastic knitted fabrics are shown in the work. A method for determining the structural characteristics of knitted fabrics, including highly elastic ones, has been developed. The proposed technique provides a quantitative assessment of the parameters of an elastomeric knitted fabric’s structure, taking into account the actual material’s state, and its changes after external influence using the methods of mathematical morphology, morphological analysis and spectral analysis of the fabric’s microstructure images. The results of practical approbation of the proposed method suggest that its application is possible and sufficiently effective.
Research of the Sound-Absorbing Structureshape Influence on the SAS Acoustic Efficiency in the Nonlinear Operation Mode
Authors: Pisarev P V , Maksimova K A 
Published: April 2020

Abstract
This research is focused on the acoustic efficiency of various shapeHelmholtz resonators on non-linear operating modes, with an acoustic pressure level of 130 dB. In this work physical and mathematical models for predicting the effective acoustic properties of SAS cells are formulated. Numerical studies have been performed to assess the acoustic efficacy of honeycomb and cone-shaped sound-absorbing structures samples in an interferometer with a normal incidence of a sound wave in a nonlinear operation mode. The validation of the developed mathematical models was carried out. A comparison of the numerical calculation results with the results of laboratory studies has been carried out. According to the results of the conducted computing experiments, the most effective resonators were identified, and recommendations on the SAS design based on the most effective resonators were formulated.
Strategic Analysis of New Cities (Case Study Basmaya City - Republic of Iraq) An Analytical Study of Strength, Weakness, Opportunity, and Threat
Authors: Al-Jawari S M , Al-Mosawy S K , Al-Jabari A A , Al-Baghdadi A N 
Published: April 2020

Abstract
The rapid growth of cities and their inflation is a big problem, especially in the last years. this growth is accompanied by such problems like population growth, housing need, low level of services, random expansion, traffic congestion as well as pollution of the environment, which leads to a decline in the quality of life in Baghdad, the population are concentration in Baghdad therefore that leads to imbalance of development among cities and productive concentration for service projects in a mega cities, causing migration from other provinces In search of a better life.
The main objective of the new cities is to relieve pressure on major cities and guide the growth of cities. Basmaya city it’s a new city project adopted from Iraqi national investment commission, this paper aimed to strategic analysis of this city and evaluate the real situation for this project by internal environment analysis, external environment analysis in addition to measurement of performance strategic gaps.
Composite structure-based transparent ultra-broadband metamaterial absorber with multi-applications
Authors: Liu Rui , Zhang Binzhen , Duan Junping , Dong Lin , Yu Juan , Zhang Zhonghe 
Published: April 2020

Abstract
In this paper, an approach is proposed to realize optically transparent metamaterial absorber (OTMA) with ultra-broadband absorption properties by using composite resonant structure. The indium tin oxide (ITO) resistive film is used to construct the resonant structure to induce high ohmic loss and broaden the bandwidth of the resonances, thus achieves more than 90% absorptivity in the wide bandwidth of 8–30.3 GHz, which can cover the X and Ku bands of the airborne and surveillance radar signal frequencies. The novelty of designed structure lies in the properties of larger absorption bandwidth (covering X, Ku, K and part of Ka bands), lower thickness, and absorption capacity over a wide range of incident angles. Moreover, by replacing the intermediate air spacer with polydimethylsiloxane (PDMS) and polymethyl methacrylate (PMMA) dielectrics, the OTMAs that can be used for conformal applications and rigid window glass of stealth armament are designed. This strategy provides more flexibility for the applications of broadband OTMA in different occasions, and has potential application prospects in radar stealth system, EM shielding and transparent RF equipment fields. The average optical transmittance of the whole structure in the visible light range exceeds 78%.
Phenotypic diversity assessment within a major ex situ collection of wild endemic coffees in Madagascar
Authors: Rimlinger Aurore , Raharimalala Nathalie , Letort Véronique , Rakotomalala Jean-Jacques , Crouzillat Dominique , Guyot Romain , Hamon Perla , Sabatier Sylvie 
Published: April 2020

AbstractBackground and AimsLike other clades, the Coffea genus is highly diversified on the island of Madagascar. The 66 endemic species have colonized various environments and consequently exhibit a wide diversity of morphological, functional and phenological features and reproductive strategies. The trends of interspecific trait variation, which stems from interactions between genetically defined species and their environment, still needed to be addressed for Malagasy coffee trees.MethodsData acquisition was done in the most comprehensive ex situ collection of Madagascan wild Coffea. The structure of endemic wild coffees maintained in an ex situ collection was explored in terms of morphological, phenological and functional traits. The environmental (natural habitat) effect was assessed on traits in species from distinct natural habitats. Phylogenetic signal (Pagel’s λ, Blomberg’s K) was used to quantify trait proximities among species according to their phylogenetic relatedness.Key ResultsDespite the lack of environmental difference in the ex situ collection, widely diverging phenotypes were observed. Phylogenetic signal was found to vary greatly across and even within trait categories. The highest values were exhibited by the ratio of internode mass to leaf mass, the length of the maturation phase and leaf dry matter content (ratio of dry leaf mass to fresh leaf mass). By contrast, traits weakly linked to phylogeny were either constrained by the original natural environment (leaf size) or under selective pressures (phenological traits).ConclusionsThis study gives insight into complex patterns of trait variability found in an ex situ collection, and underlines the opportunities offered by living ex situ collections for research characterizing phenotypic variation.