Kuban State Technological University
Author list of organization
List of articles written by the authors of the organization
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Description
The article contains a block diagram of the mechanical activation process of multicomponent shape memory materials, taking into account the variety of influencing factors. We have proposed to evaluate the reactivity of the sprayed material using the energy criterion (energy intensity), determined by the additivity concept as an energy amount of the raw material and energy accumulated during mechanical activation. Power consumption of the raw material depends on the chemical and phase composition and is determined based on the similarity between the melting energy, plastic deformation and fracture on the thermodynamic characteristics and diagrams of the systems. The energy stored in the MA is determined on the basis of X-ray structural analysis. We have demonstrated that with increasing of grinding precision there is growth in the number of active centers, which enables nanostructurization of surface layers in high-velocity oxygen-fuel spraying (HVOF). According to the study, we have developed practical recommendations for effective implementation of mechanical activation of the shape memory material
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Description
The article gives results of research of the process of abrasive wear of samples made of Steel 45, U10 and with applied composite surface layer "nickelmulticomponent material with shape memory effect (SME) based on TiNi". For the tests we have chosen TiNiZr, which is in the martensite state and TiNiHfCu, which is in the austenitic state at the test temperature. The formation of the surface layer was carried out by high-speed gas-flame deposition in a protective atmosphere of argon. In the wear test, Al2O3 corundum powder was used as an abrasive. It is shown that the wear rate of samples with a composite surface layer of multicomponent materials with an SME is significantly reduced in comparison with the base, which is explained by reversible phase transformations of the surface layer with an SME. After carrying out the additional surface plastic deformation operation (SPD), the resistance of the laminated composition to abrasion wear is greatly enhanced, due to the reinforcing effect of the SPD. It is recommended for products working in conditions of abrasive wear and high temperatures to use the complex technology of formation of the surface composition "steel-nickel-material with high-temperature EPF", including preparation of the surface of the substrate and the deposited material, VGN in the protective atmosphere of argon, followed by SPD
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Description
The power plant being investigated is Novocherkassk State District Power Plant located in the settlement of Donskoy, Rostov region. The power object is included in the list of objects of the fuel and energy complex subject to categorization and is defined as critically important. The analyzed site is the "subsidiary farm", which includes a chemical reagent warehouse and a site for chemical water purification, where hazardous substances are treated: sulfuric acid and technical sodium hydroxide. The analysis of the main causes of accidents at thermal power stations occurred during processing, storage and transportation of hazardous substances, and typical scenarios of possible accidents at the chemical water treatment plant of thermal power plants were considered
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Description
We have presented a table of analogues of mechanical and electrical quantities of a thermal power plant, which shows the relation between the useful power of the engine and mechanical efficiency, as well as the relationship between engine parameters and regime of its operation; we have also developed an electro-mechanical analogy, which helped to get the expressions linking the useful engine power with shaft speed, engine performance, coefficient of mechanical resistance and mechanical efficiency with speed, coefficient of drag and engine performance. Similar expressions were obtained for the relations of these variables with other sets of parameters. The article also shows corresponding graphs. The expressions for the maximum net power and corresponding speed of rotation was found. Thus, the efficiency isЅ. It is shown that in larger (compared with the extreme) speed, the mode is less efficient than with the smaller, for the same useful power. A method is presented to measure the important characteristics of the finished engine – motor operation and its rotational drag coefficient used in the resulting expressions
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Description
The presence of an ethnic component at economic space of the territory allows gaining synergy effect and increasing competitive advantages of the region. In the article, it is revealed that the clustering of business activity in the sphere of ethnic economy will promote growth of economy of the Krasnodar region, increase in efficiency of interaction of subjects of small and medium business and growth of their internal potential in the added economic conditions of managing. Options of agro-industrial clusters are offered and the conditions necessary for creation of these integration forms of managing are defined. Our way to a judgment, the modern economic policy pursued by organs of the regional power shall be directed to maximizing ethnoeconomic potential of economic space of the territories. Creation of ethnoclusters allows not only to increase efficiency of ethnic production by means of implementation of innovative technologies in case of manufacture of competitive production, but also to use possibilities of waste-free production, promotes implementation of culture of traditional environmental management, allows ethnoses to offer the made production in the international market. The difficulties interfering effective functioning of the Cossack farms are revealed. It is defined that use of model of the Cossack farms of innovative type at the level of the region will allow to solve a row of tasks: 1) to increase production of agricultural production; 2) to provide inflow of income to the budget; 3) to increase quality of the produced food; 4) to provide growth of competitiveness of regional producers; 5) to increase employment of the population involved in agriculture; 6) the food market will act as the "growth point" generating pulses of development of other local markets of the region
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MODELING AND DIAGNOSIS OF TRAINING PRODUCTIVITY OF SCIENTIFICPEDAGOGICAL PERSONNEL
DescriptionThe article presents the criteria for the effectiveness of the scientific and pedagogical workers of higher skill levels for the preparation of scientific and pedagogical staff. It is known that the preparation of the teaching staff (PhDs) - one of the most important activities of higher education institutions; Moreover, when the state accreditation of higher education institutions compulsorily taken into account indicators that reflect the impact of training candidates. Also, of course, that the training of the teaching staff (PhDs) - activities that require both high levels of research and pedagogical competence. This means that the results of scientific and teaching staff higher qualification levels for the preparation of the scientific staff - both indicators of research and pedagogical competence; own training of researchers - an area of "crossing" of scientific and pedagogical activity. Unfortunately, the increase in the number of scientific personnel being prepared does not always mean quality growth. Often trained scientific personnel (PhD) not only do not approach the level of competence of its research (the results of research) to the supervisor, and stopped to engage in scientific activities after defending his doctoral dissertation (or engaged at a low level). Therefore, the article authors consider it expedient to propose indicators that reflect not only the amount and timeliness of the research training (PhD thesis defense sometimes occur many years after graduate school), but also the productivity of this activity. From the point of view of the authors, the success of research training only can be considered productive when prepared by the scientific supervisor candidates of sciences are highly qualified scientific personnel, ie conduct high-level research, the results of which are recognized by the scientific community; the same is true of the scientific advice (highly qualified scientific workers - doctors). The practical significance of the study results - in the possibility of objective monitoring of research activity of scientific-pedagogical personnel of higher qualification. Methodological bases of research: a systematic, competence, sociological, and metasystem qualimetric approaches. Methods: modeling, methods of quality control, methods of set theory, relations and graphs. Normative base of research: the Federal Law "On Education" (2012), the federal state educational standards of higher education (2014, 2015). The work was performed as part of research projects "Monitoring of the research activities of educational institutions in the information society" (№ 16-03-00382) and "Modern information and educational environment" (16-36-00048) with the financial support of the Russian Humanitarian Foundation from 17.03. 2016.
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NEW SCIENTOMETRIC INDICATORS RESISTANT TO ARTIFICIAL “IMPROVEMENT”
DescriptionThe article presents the new criteria suitable for the diagnosis of the productivity of research and the importance of its results for the scientific community, are resistant to artificially "improve". It is known that generally accepted measure of the productivity of research scientists is the h-index, which is calculated based on a statistical method of scree. This indicator is applicable to research teams (organizations). However, the h-index and a number of other scientometric indicators based on citation, are easy to be artificially increased (fraudulent schemes action). New scientometric parameters adequately reflecting the importance of research results, and not amenable (or very difficult to) to be artificially "improved" are therefore needed; moreover, it is recognized around the world: the true score (not fictitious) of the significance of the results of a research scientist for the scientific community - is a complex metrological (scientometric) task. The authors argued that such indicators are primarily index latitude demand for research results, as well as a number of other parameters of copyright. Despite the fact that authors indicators, the same as the h-index are based on citation, their large values indicate that the scientific community recognizes the results of the research activities of scientific and pedagogical workers; moreover, these indicators can be considered as a criterion to identify really promising (productive) researchers. The problem of adequate assessment of the productivity of research activities and the significance of its results, the authors consider in the context of the problems (larger problems) of the effectiveness of educational environments. The practical significance of research results lies in the possibility of their use for constructing criteriondiagnostic apparatus for monitoring research activities of scientific institutions (including higher educational institutions). Research methodology: systemic, metasystemic, probabilistic-statistical and qualitative approaches. Research methods: cognitive, structural, functional, and mathematical modeling; methods of graph theory, sets and relations; system-cognitive analysis; methods of quality control (theory of latent variables); methods of probability theory and mathematical statistics (first of all – a method of scree), methods of analytical geometry; methods of the mathematical theory of limits
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A DEVELOPMENT TRAP FOR CORPORATE CAPITAL
DescriptionThe article considers specific obstacles (traps) which can occur during the embedding of the corporate capital in a changeable economic system of Russia. The author reveals the causes and consequences of emergence traps in the development of corporate capital, among which are: the rapid transformation of the financial component of economic relations and prolonged elevation of power over the property, the unpredictability and variability of economic policy, institutional deformation, resulting in scarcity of necessary resources for the development of corporate capital and embedding it in the flow of change, lack of trust entities to the policies of the state, «manual economy». The aim of the study is an in-depth search of potential possibilities of corporate capital and the ways out of the formed on the system of socioeconomic transformations of the pitfalls of development. In the process of research, the author used the cognitive capabilities of the system approach, institutional theory, and the conceptual provisions of politico-economic and evolutionary theories. The study was conducted with the help of dialectical, empirical, historical, logical, structural methods
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COMPARATIVE ANALYSIS OF THE VENTILATION MODELS OF THE SUBSTRATE WHEN COMPOSTING
DescriptionIn the article we have performed a comparative analysis of a traditional system of air supply to the bioreactor during the composting process and the developed system with lateral air supply. We have proven to reduce temperature variation of the substrate as a result of the use of the ventilation system by 35%. During the simulation, equal to 1.0 hour, a ventilation system with side air flow provides a reduction of the accumulated degree of heterogeneity of status parameters of the substrate by 58%. Use of the ventilation system with side air flow reduces the duration of technological cycle of composting 7 %. This article was prepared in the framework of the scientific project 16-48-230441 a(R) "Mathematical modeling of the processes occurring in the automated installation for year-round production of organic fertilizers in the conditions of the Krasnodar region", financed by RFBR and administration of the Krasnodar region
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OPTIMIZATION OF THE ENERGY CHARACTERISTICS OF A CHILLER WITH COLD ACCUMULATOR IN TROPICAL CLIMATE
DescriptionThere is always an abrupt variable schedule of cooling consumption in processing enterprises with seasonal supply of raw materials. This causes peak heat load on the refrigeration unit. The introduction of cold accumulators (CA) in refrigeration units is one of the modern ways of reducing the cost of refrigeration. The use of cold accumulators allows you to smooth out uneven thermal load on refrigeration, reduce the cooling capacity of the installed equipment and technical equipment. The night season experiences minimum heat leakage and power consumption of frozen ice water (coolant or refrigerant) but the refrigeration capacity is used during the daytime at peak heat load of cold consumption at peak electricity consumption. The major cost of electricity to generate refrigeration to compensate for heat loss coincides with the period of high electricity tariffs as shown from the analysis of cold consumption. The development of refrigeration systems with cold accumulation in “night” period of low electricity tariffs is an important issue based on the forgoing