Calculation of cylindrical multilayer electromechanical transducer at different polarization types in nonstationary modes

Numerical research method for oscillations of cylindrical multilayer electromechanical transducers with electrode conju-gation surfaces at electrical disturbances is developed. Electromechanical state parameters of transducer depending on the number of elec-trode layers and polarization direction are investigated dynamically. Dependence of the radial oscillations frequency on geometric dimen-sions and proportionality between amplitude valuesof displacements and stresses in cylinders with oncoming polarization layers and the number of layers are established. Correlation between outer surface oscillations and cylinder inner opening size is studie

The interrelation between the professional judgment of the accountant and the quality of financial reporting

© 2014, Mediterranean Center of Social and Educational Research. All rights reserved. The urgency of the given research is defined by the fact that the improvement of financial reporting quality which is the basic source for the conduction of enterprise's financial state and results of activity analysis is continuously connected to the efficiency of assets and liabilities, their quantification and classification. The purpose of the research is to consider the basic approaches to the definition of financial reporting quality, to reveal interrelation between professional accounting judgment regarding accounting objects and forecast value of information introduced to users

The development of state regulation in small entrepreneurship infrastructure provision

The article discusses the current state of the institutional infrastructure of small business at regional level, highlighted trends in the development of small business and enterprise infrastructure components market. The article comprises a set of theoretical and methodological statements and practical development of infrastructure and realization of entrepreneurship. The characteristics of entrepreneurship with expenses development and transactions based on the analysis highlighted the problem areas and suggested measures to overcome them

Entrepreneurial networks management in the resource-based economic sector on the basis of institutional approach

The article deals with the problem of forming business networks in the industrial sector of economy on the basis of institutional economics. Significant efficiency gains in the resource-based sectors as a whole can be achieved as a result of institutional design of enterprise networks based on the principles of cooperation and integrative solutions for the value chain. It is proved that the activities of industry sectors of small business can be significantly developed through the application of new institutional formats

Obtaining a complex mineral fertilizer from raw materials of varying degrees of purification from impurities

The article is devoted to the synthesis of a complex fertilizer magnesium-ammonium phosphate (MAP) from raw materials of varying degrees of purification, the effect of certain impurities on the MAP yield, as well as the choice of optimal conditions for obtaining this fertilizer. Phosphorus, as is known, is an irreplaceable element of plant nutrition, therefore the introduction of compounds containing phosphorus in one form or another is necessary for the normal development of plants during the growing season. Phosphoric acid, obtained by opening natural phosphates with mineral acids, in particular, sulfuric acid, is often used to obtain phosphoric fertilizers. One of the ways to purify the phosphoric acid obtained in this case is purification using various organic solvents. At the output, phosphoric acid is purified from most impurities, containing a small amount of impurity cations and anions, the main of which are fluorides and sulfates. We carried out the MAP synthesis on the basis of chemically pure phosphoric acid and using an acid purified with an organic solvent tributyl phosphate. It has been shown that the presence of sulfates and fluorides in purified phosphoric acid increases the MAP solubility in an aqueous solution by increasing the ionic strength of the solution and leads to a slight decrease in the yield of the synthesis product from 81% to 78%. The interfering effect of impurity anions can be reduced by conducting the process in an alkaline medium, pH 9-10, with the addition of an excess relative to the stoichiometric amount of an aqueous ammonia solution

Modelling of economic growth in russian agriculture

© 2014, Mediterranean Center of Social and Educational Research. All rights reserved. The article deals with the experience and problems of production funds building in Russian agriculture. Factors of agricultural production best reflecting dynamics of output in agriculture are substantiated. The model of agricultural production in 1996- 2012 was built

Territorial aspects of migration processes in Russia

This article deals with theoretical and practical aspects of migration of population. Particular features of international and interregional migration flows in Russia are revealed on the basis of the analysis of statistics on migration. Three model configurations of migration flows are singled out: counter, outgoing and incoming migration flows. Particular attention is given to the study of migration in Volga federal district. The structure of international and interregional migration in Volga federal district is examined. It was observed that in international migration incoming migration flows predominate, whereas in interregional migration all three model configurations of migration flows are present

Enhancement of horizontal well oil recovery by means of chemical stimulation

© 2015, Asian Social Science. All rights reserved. Complex of self production technologies solves the problem of preservation, restoration and enhancement of natural collection characteristics of bottom hole formation zone and, moreover, enhancement of active draining field and level of hydrocarbon selection by oil wells of different construction in non-uniform porous fractured carbonate reservoirs. The scientific and methodological basis for complex of well stimulation technologies in carbonate reservoirs is the following principle – phased, consistent, rational inclusion in the development and exploitation of the entire producing formation thickness, and only thereafter – successive, phased realization of physical and chemical influence on the formation-reservoirs depth and extent. The article deals with the solution of up-to-date problems of restoration and enhancement of productivity of oil wells in Tatarstan carbonate reservoirs under conditions of import substitution of advanced technologies of the formation oil recovery enhancement. Stimulation issues on the entire chain of oil extraction technological process are regarded from the formation drilling-in until repair-isolation works. Reduction in oil recovery cost is taken into account by means of the effective application of complex technical solutions, operations matching in time and power inputs on production enhancement in wells from water-bearing horizon. Enhancement of technical and economic efficiency of one's own technologies of acid treatment of vertical and horizontal wells leads to enhancement of current and final coefficient of hydrocarbon resources extraction. Solution of the above stated tasks was performed on the basis of the suggested by the authors principally new, scientifically based, mastered in production and inculcated in industrial scales complex of our own technical and technological solutions providing achievement of considerable enhancement of the efficiency of hydrocarbon raw materials extraction in Tatarstan

Learning curve from the financial economic crisis of 2008 for organizations: A conceptual viewpoint

© Shamil M. Valitov, Arthur A. Nigmetzyanov, Wilfred Isioma Ukpere, Leona L. Grigoryeva, 2016.The objective of this paper is to critically analyze the concept of organizations considered as a too big to fail and how this phenomenon played out within the recent financial economic crisis of 2008. Special attention was paid to its negative characteristics and consequences. Nevertheless, these types of institutions seem to have become an inalienable part of the mo-dern financial world. The authors explored literatures on the relevant financial sector reforms by considering the experience of Switzerland and USA with regards to the Financial Stability Board. The authors suggest that financial economic crisis of 2008 revealed the necessity to carry out measures to prevent systemic risk caused by large financial organizations

Factors Influencing Social Participation of Older People in Russia: Study of Practices of Delayed Ageing

Received 24 October 2023. Accepted 18 March 2024. Published online 5 April 2024.The article presents the study results of the social participation of Russian citizens aged 60 and over. The analysis is based on the concept of extended adulthood or delayed ageing, which is a continuation or development of “active ageing.” Extended adulthood is understood from a sociological perspective as the preservation of the social status and role of an independent person participating in the life of society. Our main research question is “What factors and how do they influence the social activity of older people in modern Russian society?” Our research is based on a quantitative survey, consisting of a corpus of 210 questionnaires collected in a medical institution from older people aged 60 and over, supplemented by data from their medical records. For data triangulation and thick description, we use the material from 50 in-depth semi-structured interviews. All material was collected in 2022–2023. The data are strictly anonymous. Among the various forms of social participation and involvement of older people in activities, the most important is employment, which increases income. Internet use helps to prolong social participation and not to feel old. After the age of 75, the range of activities decreases and focuses on family and relatives. The very concepts of “ageing” and “elderly” themselves have predominantly negative connotations for both respondents and informants and are associated with inactivity, illness, loss of interests and abilities, etc. This allows us to consider the concept of extended adulthood/delayed ageing as the most effective and appropriate for studying ageing and changes in ageing policies.The research was supported by a grant from the Russian Science Foundation No. 22-18-00461 https://rscf.ru/en/project/22-18-00461