05.00.00 Technical science
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Description
The article presents the main directions of the application of the scree plot method in solving metrological problems in the social and humanitarian fields of knowledge (economics, pedagogy, sociology, including sciencemetry). It is known that statistical measurements in socio-economic systems are inextricably linked with the processing of primary homogeneous monitoring information. It is also known that empirical averaging (computation of the empirical mean), as the dominant method of mathematical statistics, is becoming a thing of the past, due to moral aging, inconsistency with modern requirements (primarily to measurement results in socio-economic systems); In science meteorology, this method was replaced by the scree plot method (the Hirsch index and other scientometric indicators are estimated on the basis of this method). Despite its enormous potential, the scree plot method, as an alternative to traditional methods of mathematical statistics, is very poorly used in the social and humanitarian fields of knowledge. The authors of this article have shown that this method can be successfully applied in solving various metrological tasks, not only in science (sciencemetry is a branch of science), but also in economics, pedagogy and sociology. In addition, the authors show modifications of the scree plot method, using the example of measuring (measuring) indicators in the economy, sociology and pedagogy; The relationship between the scree plot method and the theory of latent variables (qualimetry) and database technology is grounded. The authors also substantiate that the scree plot method - the basis for the formation of monitoring indicators that adequately reflect the performance of socio-economic systems. The practical significance of the results of this study is that they can be used in socio-economic and psychological-pedagogical monitoring systems (according to modern views, monitoring is an information management mechanism). Methodological basis of the research: system, sociological, competence, probabilitystatistical and qualimetric approaches (leading methodological basis is the probabilistic-statistical approach). Research methods: modeling; Methods of graph theory, sets and relations; Systemic-cognitive analysis; Methods of qualimetry (the theory of latent variables); Methods of mathematical statistics
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MATHEMATICAL MODELING OF ELECTRO TECHNOLOGICAL OZONIZATION OF EGG STORES OF POULTRY FARMS
DescriptionSanitization of eggs is an essential way to fight bacteria, fungi and other microorganisms. Hatchability of eggs and the safety of day-old chicks are dependent on the quality of eggs processing. Leading scientists of our country have proved high efficacy of ozone application for processing of hatching eggs. To obtain a positive result by this method of sanitizing hatching eggs ozone, it is necessary to create a uniform concentration of ozone around the egg store volume. Decrease in ozone concentration from the set point may result in insufficient exposure to pathogens and because of this, may reduce hatchability. Significant excess of ozone concentration from the set point can kill the embryo. Because of mathematical modeling of electro eggs ozone treatment process, there was a mathematical model of the process of electroozonation of egg stores of poultry farms. This model takes into account decomposition of ozone on the surface of eggs and decomposition of ozone on the walls of an egg store. This mathematical model proves the desired control action at different initial data, such as: the required concentration of ozone in the egg store, the number of eggs, egg store geometric dimensions, the fan power, the design parameters of the discharge unit, the location of the ozone generator in the room
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ORGANIZATIONAL-TECHNOLOGICAL COMPLEX OF WORKS ON UTILIZATION OF AGRICULTURAL MACHINERY
DescriptionNowadays in Russia, there is a problem of utilization of vehicles. A system of recycling of agricultural machinery in Russia is absent. In the article we present an organizational-technological complex of works for utilization of agricultural machinery
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THE ISSUE SEARCH FOR THE BEST METHODS OF SELECTING THE OPTIMAL POLICY REPLACEMENT VEHICLE FLEET
DescriptionThis article analyzes the best practices of choosing the optimal policy for replacement of vehicle fleet. The problem of replacement equipment was revealed. For each of these methods we gave objective function, constraints. We have found the best method of optimal plan of replacing the vehicle fleet in the company, allowing us to obtain accurate, economically viable new equipment purchase plan during a certain period. We have selected a number of important factors that influence the choice of payment method replacement policy and built PivotTable methods and factors. The selected as part of the research methodology will significantly reduce the labor and time, which will lead to an increase in productivity of the enterprise as a whole. The article gives a practical justification for the need to address the problem of choosing the optimal policy of replacing the vehicle fleet
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Description
It is known, that the voltage deviation from the nominal value leads to a change in the technical characteristics of the equipment and may cause a violation of their working ability, including leading to an emergency. The article deals with the known structural diagram of single-phase voltage stabilizers of AC power, the peculiarities of their work and their disadvantages. To improve the performance characteristics of single-phase AC voltage stabilizers, we have proposed a functional scheme of the stabilizers performed on transformers, autotransformers and optosymistors. The article considers features of the proposed circuit voltage stabilizers. To stabilize three-phase voltage we have proposed using a three-phase stabilizer. In this case, to improve the reliability of the reserve there may be a single-phase stabilizer, which automatically connects to the appropriate phase at malfunction of one of the working electronic voltage stabilizers. To stabilize three-phase voltage, a stabilizer can be made based on the three-phase transformer. In comparison with the use of a single-phase stabilizer in a three-phase system, the voltage stabilizer will have improved weight and overall dimensions. To significantly improve the technical characteristics of voltage stabilizers, working in the autonomous power supply systems, it is possible only through the use of modern mathematical apparatus, allowing to simulate the physical processes in power circuits of stabilizers in nominal and emergency modes of operation
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Description
At present, the state management of labor protection in Russia adheres to the goals of harmonizing the domestic legislation with the best world practices in this field, eliminating internal contradictions in legislation and building an active management system for labor protection provided that a «favorable climate» for the conduct of business activities is provided. The regulatory and legal state regulation of labor protection forms the basis for the development and implementation of a set of measures to create conditions for maximum protection of life and health of workers. The authors consider the modern legal framework and standards in the field of management of labor protection in the organization. Reflects the changes that have occurred in the Russian labor legislation regarding the employer's duty to create and maintain a labor protection management system. The aspects of introduction of the health and safety management system are considered taking into account the requirements of the draft international standard ISO/DIS 45001 «Occupational health and safety management systems - Requirements with guidance for use». It is shown that one of the modern directions of standardization in the field of labor protection is the development of risk management and an analysis of foreign practice of legal regulation of issues in the field of occupational safety. The article is intended for specialists in documenting processes carried out implementation, operation and maintenance of a health and safety system, and on students of higher education institutions and teaching staff
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FEATURES OF THE DEVELOPMENT OF AN INFORMATION LEARNING SYSTEM
DescriptionNowadays, a necessary condition for progress in the field of information technology is wide adoption of standards and technologies of information systems used for hardware and software products. Building software of computing and information systems, based on the ideology of open systems, allows to successfully solve the problems of portability on platforms of various manufacturers, the problem of interchangeability of components and, most importantly, ensures the integration of devices and users in a variety of computing and telecommunication networks. It should be emphasized the fact that to date the successful implementation of any significant projects in the field of information and computer technology, management of information and telecommunications is not possible without coordination of development with existing standards in the field of information systems and, in some cases, the development of new standards. In the conditions of transition to integrated computing and telecommunications systems, the principles of information systems form the basis of technology integration, the establishment of sectoral, regional and national information infrastructures and their interactions on a global scale. So, we can conclude that the technology of information systems today is the working environment in which the priority is the development of information and telecommunication technologies, telecommunication and computer engineering
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WINTER BEEHIVES ELECTRIC HEATING ADAPTIVE TECHNOLOGY
DescriptionThe article is devoted to increasing beekeeping’s earning capacity with rigging and automation of technological processes. Winter is the most complicated and critical period in beekeeping. It influences on further productivity of bee colony. Winter period has specificity – bees are gathering in winter cluster and sustaining temperature in 24…32 °С range inside. This temperature is depending on fluctuation of outside air temperature. For passing winter without complication electric heating is used. Cluster geometry in winter is changing constantly and for optimal regime of electric heating we need to take it into account. Additionally, bees’ activity changing beehive’s microclimate and it’s important to know when beehive’s microclimate adaptive control system is developed. Conducted researches allow us to get basic equations which characterizes microclimate with taking into account of winter cluster’s variable geometry. The equations establish linkage basic parameters of beehive, winter cluster, internal air between outdoor air. Simulation results may be used for adaptive heating control system programming. Additionally, it may be used in special-purpose software for beehive’s microclimate simulation
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STUDY OF AROMATIC SUBSTANCES OF SLAUGHTER PRODUCTS OF BROILER CHICKENS
DescriptionFor comparative evaluation of aroma-forming substances of primary and secondary products of slaughter broilers, we used the multi-channel gas analyzer "MAG-8" and the methodology "an electronic nose". The objects of study served as the heads and feet of chickens-broilers of cross "ROSS-308", subjected to hydrothermal treatment for the destruction of native tissue structure at 0,24 MPa. As a control sample when assessing the composition of the equilibrium gas phase above the heads and feet of broiler chickens used poultry, meat, broiler chickens, obtained by cutting of carcasses, with the natural ratio of bone and muscle tissue. The identification of volatile components of the equilibrium gas phase above the samples was carried out according to the following classes of organic com-pounds in accordance with the numbers of sensors in the matrix: 1 – hydrophilic compounds, water; 2 – alcohols, ketones; 3 – acid, water, light alcohols; 4 – ester; 5 – sulfur-containing compounds, esters; 6 – phenol, and other aromatic compounds; 7 – alcohols, nitrogen compounds, water; 8 – acid. The analysis shows that control and experimental samples do not have significant differences in the aromatic-skim com-pounds, ketones and sulfur-containing compounds. The comparison group of "control – leg" also has no significant differences according to the groups of compounds: ketones, alcohols, esters; nitrogen-containing compounds. The largest differences recorded for the sample "legs broiler chickens", and the moisture content and nitro-gen-containing compounds, this sample is superior and head, and the main raw mate-rial in the processing of broiler chickens. The results show that heads of broiler chickens, thermo-processed under pressure can be used to realize emulsified protein-fat products of the type Pasternak masses corresponding to the traditional products of poultry meat for sensormatics the aroma profile without the use of food additives. For the formation of the corresponding standard of the flavor of food products using the legs of broiler chickens or their products it is necessary to correct the smell using the appropriate complementary ingredients
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TECHNICAL AND ECONOMIC ASSESSMENT OF GEARLESS ELECTRIC DRIVES WITH LINEAR INDUCTION MOTORS
DescriptionIn the article we consider questions of use of gearless electric drives with the linear asynchronous engines. Constructions of engines, their features and the principle of action in the electric drives of difficult oscillating motion executed on system the frequency converter – the asynchronous engine, deprived of shortcomings inherent in geared electric drives are described. Recommendations for a choice of an optimal variant of the drive of a working organ of the technological machine which is carried out on the basis of determination of value of the gained technical and economic effect are made. Methods of technical and economic project evaluation are offered: a method of a maximum of economic effect and a method of a minimum of the given expenses, their assessment is given. On the example of the grain-cleaning machine Petkus K531A and the roller-deck machine SGR-400 determination of technical and economic effect is made and an economic assessment of upgrade is given. The conclusion is drawn on validity of use of gearless electric drives from linear asynchronous engines in a technology equipment of agrarian and industrial complex due to lowering of energy capacity of technological processes because of an exception of gears and transformers of a type of movement; in some cases increase in an output of the final product due to increase in efficiency of technological process is watched; implementation of difficult oscillating motion allows to look at execution of a row of technological operations with development of new technological machines in a new way