№ 129(5), May, 2017
Public date: 31.05.2017
Archive of journal: Articles count 97, 240 kb
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FEATURES OF APPLICATION OF METHODS OF MULTICRITERIA OPTIMIZATION IN THE SPHERE OF PUBLIC CATERING
DescriptionThe foodservice industry plays an increasingly important role in modern society and every person. This is achieved primarily due to the changing technologies of food processing, development of communications, the means of delivery of products and raw materials, the intensification of many industrial processes. Catering is one of the most important socio-economic components of the level of development of society. The production process consists of the partial tasks of providing, storing, manufacture, sale, distribution, financing, optimization of the warehouse, personnel training and the introduction of new technologies and management. The aim of the study is determination of methodology of optimization of procurement activities in the field of restaurant business, using mathematical programming methods. In catering should pay special attention to the costs of procurement. When choosing a method of solution you need to consider the shelf life of products purchased, calculate the number of them required for dishes and many other important criteria. Today there are thousands of solutions to the optimization problems of planning and management, but many of them also have a number of disadvantages, for example, do not cover all aspects of the subject area, neither provide complete information
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SIMULATION OF PLASMOID AND STRAIMERS IN CONDUCTING ENVIRONMENT
01.00.00 Physical-mathematical sciences
DescriptionIn this work, a model is developed that describes the formation of a plasmoid and streamers in a conducting medium. To describe the contribution of the conductivity currents, we modified the standard electrostatic equation taking into account the vortex component of the electric field. As a result of this generalization, the streamer model is formulated in the form of a system of parabolictype nonlinear equations. As is known, in laboratories it is possible to create a plasmoid with a lifetime of 300- 500 ms and a diameter of 10-20 cm, which is interpreted as a ball lightning. With high-speed photography, a complex structure is detected, consisting of a plasmoid and surrounding streamers. Within the framework of the proposed model, problems are posed about the formation of a plasmoid and the propagation of streamers in an external electric field. In this model, the plasmoid is considered to be a long-lived streamer. The range of parameters in which a plasmoid of spherical shape is formed is indicated. It is established that there are three streamer branching mechanisms. The first mechanism is related to the instability of the front, which leads to the separation of the head of the streamer into two parts. The second mechanism is associated with the instability of the streamer in the base region, which leads to the branching of the streamer with the formation of a large number of lateral streamers closing the main channel of the streamer to the cathode. In numerical experiments, the third branching mechanism observed in experiments connected with the branching of the plasmoid in the cathode region with the closure of the space charge to the anode through the streamer system was observed. The similarity of ball lightning and plasmoid is discussed. If this similarity is confirmed, then the number of theoretical hypotheses concerning the nature of ball lightning, currently more than 200, can be drastically reduced to one described in this article
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Description
At present, electrochemical analysis methods are increasingly used to solve the problem of research on quantitative and qualitative indicators of organic substances. One of the most common electrochemical methods of analysis is conductometry. Along with the straight line, indirect conductometry is often used, in which the substances under analysis react with the corresponding components before the measurement, and the fixed change in electrical conductivity is determined exclusively by the presence of the products of the reaction that occurred. A necessary condition for the application of this method is the presence of ions in the reaction medium, and since the pectic substances are polyelectrolytes, this condition is met, which allows us to use the conductometric titration method to determine the quantitative and qualitative characteristics of pectic substances. The technique we propose relates to technical biochemistry, namely, to the determination of the amount of pectin substances in plant raw materials. We have prepared "standardized" solutions of fractions of pectin substances. Samples of solutions of fractions are taken. Saponification of fractions of pectin substances in the samples of the solutions under analysis is carried out with 2.5 ml of 40% NaOH solution. Fractions of the pectin substances are precipitated with 2.5 ml of concentrated HCl. The solutions to be analyzed are centrifuged in 50 ml test strips at a rotor speed of at least 5000 rpm for 5-7 min. Suspensions of pectin fractions with distilled water are suspended in a beaker for titration with a magnetic stirrer for at least 30 minutes. Conductometric titration of suspensions of precipitates of fractions of pectic substances is carried out with stirring. Based on the results of conductometric titration, graphs are plotted, according to which the volume of titrant consumed for titration of pectic acid is established. Calculation of the mass fraction of fractions of pectic substances is carried out according to the formula. The methodology is distinguished by the simplicity of implementation, which makes it possible to obtain accurate data at high convergence of parallel analyzes, and it saves labor and time costs at all stages of the process
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CIVIC AND NATIONAL EDUCATION AND SOCIETY DEGLORIFICATION TREND
DescriptionThe article shows the educational system trend to misconception of civic and national education, which leads to deglorification, nationalistic demonstrativeness, and decrease of youth civic and national education level
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ENSURING INFORMATION SAFETY OF STUDENTS
DescriptionThis article draws attention to the problem of ensuring information security of students, including the prevention of the Internet addiction
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Description
The rapidly developing processes in global information development of our society have had a significant impact on education. Recently, in agricultural and other universities the amount of generated and processed pedagogical information has dramatically increased. Spontaneously and purposefully, electronic databases of educational information and educational portals have been created. All these works require a significant investment of time and effort of the teaching staff (PPP) of higher education institutions and a large number of technical experts in the field of information technology; they also require appropriate computer and communications equipment. All this is already an accomplished fact. On the other hand, the question arises about the degree of meaningfulness and expediency of certain aspects of this process in the form in which it is actually carried out, and evaluation of its impact on the mission of the University in General: "Training high-quality professionals", in particular for the regional agro-industrial complex (AIC). Apparently, now this process develops spontaneously, and no one has planned it, considering on the one hand, the costs of various kinds on its implementation and on the other hand - ensuring its effectiveness in achieving the objectives and getting the intended desired results both in physical and valuable forms. The meaning and justification of this process can give only a substantial positive impact on improving the quality of education, and only when it has adequate and reasonable cost. For a reasoned response to these questions, the authors propose to apply the theory of reflexive management active objects, automated system-cognitive analysis (ASC-analysis), functional cost analysis (FCA) and the method of "Direct costing". A foundation for solving the problem: this is a great experience in teaching and research activities, a successful experience of the application of ASC-analysis and the FSA for personnel management; a software tool of ASC-analysis which is an intellectual system called "Eidos" (full open free access)
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Description
The article is devoted to consideration of the content of teaching a foreign language in the era of globalization. Basis of content formation of teaching are two main principles consisting in necessary sufficiency and availability of teaching material. The study examines the main components of content of teaching consisting of system of knowledge and system of skills and abilities, structural by realized through five subcomponents which determinate selection criteria of teaching material. This includes the study of such aspects of the problem as the identification of sociocultural changes in the context of globalization, based on the information character of society. The language changes are considered under the influence of the above factors, which must be taken into account in the content of teaching the language as a foreign language. It is concluded that these changes need to be taken into account, because they are critical and extend to all spheres of life. Language, being in indissoluble connection with society during all evolutionary development is also subject to changes. In this regard, the language changes are considered under the influence of the above factors, which must be taken into account in the content of teaching the language as a foreign language. The basis of these changes is the information character of society, which influences the language style of the era, which must be taken into account in the content of teaching the language as a foreign language
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INDUSTRIAL CONSTRUCTION OF TATARSTAN: MAIN TRENDS
DescriptionThe article describes the main trends in industrial construction in the Republic of Tatarstan, as well as analyzed the costs of the Republic, its major projects for industrial construction. The result of construction, as a type of production activity, is construction products - finished or prepared for operation buildings or structures for production or non-production purposes. The construction ensures the creation of fixed assets and production capacities of the economy. And the result of investments in fixed capital is the construction of new facilities and upgrading of equipment, purchase of necessary vehicles and tools, i.e. investment in different sectors of the economy that will facilitate the acquisition, establishment, expansion of fixed assets of enterprises, and thus contribute to the development of economic entities and economy as a whole. The Republic takes leading positions in the ranking, not only in terms of housing, but also for industrial construction. The shortage of capital in the field of investment and construction activity and the weak development of the construction industry will not be able to implement large industrial and infrastructure projects. The article describes the main steps of the Republic, aimed at attracting investment and ensuring development of the construction industry, particularly industrial construction
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Description
The article describes the methodology for analyzing the break-even of multiproduct production; it emphasizes the value of analysis of break-even and targeted profit planning because this approach allows you to assess the profitability of certain types of products, establish the "safety margin" of the enterprise and plan the sales of products that provide the desired value of profit
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Description
In the context of implementing programs on reducing budget expenditures for the social sphere utilities, it is urgent to intrude renewable energy sources into the practice of their energy supply. However, despite all their diversity, not all constructions based on renewable energy sources can be used under conditions of urban development. Besides, the mutable nature of the solar radiation coming on the Earth's surface requires specific forecasts and calculations of its intensity. Accurate estimation of the area solar energy potential of the generating plant proposed location allows not only to justify its parameters at the design stage, but also to predict its operating mode and to evaluate its technical and economic efficiency. The purpose of the article is to estimate the level of solar radiation for Volzhsky, Volgograd Region, at the initial stage of designing and justifying the implementation of power plants transforming renewable solar energy in urban areas. In the article, it is proposed to apply method for estimating the solar energy potential of at a specific geographic point, based on a combination of the calculation method for determining the solar radiation characteristics and actinometric measurements. Volzhsky of the Volgograd Region, like most settlements in the Lower Volga region, has a high solar energy potential: 1228.8 kWh / m² for the horizontal surface of the southern orientation of the receiving surface of power plants, which can be increased by 16.2% at its optimal orientation relative to the horizon and the sides of the world. However, the expansion of the utilization of the solar energy potential of the district may be limited to the location of the existing buildings and structures at which power plants may be located in urban development conditions