05.00.00 Technical science
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OPTIMIZATION OF CONGESTION OF ROAD NETWORKS
DescriptionDefinition of the directions of development of transport system of the city is to ensure objectively justified needs for movement of goods and people on the territory of the city. Transport planning of the city is in direct connection with the planning of territories. The transport planning issues are resolved immediately after the planning of the city. Transport planning is based on the provisions of the General plan of the city. Organization of urban traffic should be considered as a continuous process of forecasting – planning – design – construction. In the organization of road traffic, public passenger transport should be considered as a priority, as an alternative to a car, even with a certain amount of discrimination. Among the possible solutions to the questions of organization of traffic at signalized intersections include the use of multi-program traffic lights regulation (at least three programs) that allows you to change the duration of a traffic light cycle, permitting phases at a fixed value of the cycle and intermediate cycles depending on clock download site. Equipment management systems of traffic on the road network, modern technical means of regulation. The definition of "acceptable system of urban road traffic is largely dependent on the degree of customer satisfaction (the movement). And it varies. It is influenced by many factors, such as the size of the urban agglomeration. It is quite clear that it is impossible to achieve the same results in settlements with population more than 1 million people and less than 100 thousand
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NECESSARY CONDITIONS FOR THE DEVELOPMENT OF A CONTROL LIGHTING SYSTEM
DescriptionAutomated lighting control system designed for use in public buildings; they perform actions typical for this kind of products. Accurate maintenance of artificial light in the room at the set level. This is achieved by having a lighting control system with a photocell inside the room and controlling the lighting system illumination. Even only one this function allows you to save energy due to the cutoff of the so-called "excess light". Calculating natural light in the room. Despite having the vast majority of premises with natural lighting in the daytime, the power of the lighting system is calculated excluding. If you maintain illumination created jointly by a lighting system and natural light, at a predetermined level, it is possible to further reduce the power of the lighting system at each moment of time. At certain times of the year and hours of the day, perhaps it is enough to use just natural light. This function can be carried out by the same solar cell as in the previous case, provided that it tracks the full (natural + artificial) illumination. In this case, the energy savings can be at 20 - 40% level
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FEASIBILITY STUDY AND IMPLEMENTATION OF PRODUCTION OF ELECTROACTIVATORS
DescriptionThe feasibility study is required in determining the effectiveness of the implementation of electrotechnical products. The main aim is to determine the magnitude of the economic effects of using key and related results in agriculture. The article presents a feasibility study of production and implementation electroactivator device in the production of 5 units monthly, 60 units per year. It is the device cost calculation based on investment, energy costs and wages. Capital investment in new plant is the cost of materials and installation. The magnitude of the value of individual elements of the unit is determined by the price lists. Determining the cost-effectiveness and technical feasibility in the production when introducing electrified units involves additional investment and operating costs, this is reflected in the cost of production. The comparison was made for the device with a new electroactivator developed in KubSAU and using chemical means of Lakmus. Calculations of economic efficiency of investments for the farm which has 225 hectares of arable land have shown that basic income will be obtained by reducing operating costs. Net present value was determined for different levels of the bank rate and inflation
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ENERGY-LOADING OF DISKS IN FRICTION PAIRS OF “DISC-PAD” OF BRAKING DEVICES IN VEHICLES (part two)
DescriptionIn the materials of the article we mention the regularities of changes in the volume and surface solid temperature gradients and self-ventilated brake discs and illustrate their impact on the main operating parameters of the friction pairs of disk-to-pad brakes of the A 172 bus; the relationship between thermo-physical parameters of polished and matte surfaces with areas of brake discs of various types. The influence of the type of tests on the pairs of loaded with energy friction disk and pad brakes of the vehicle. We have set the intensity of heat exchange processes from the surfaces of the brake discs of various types. It is shown that this leads to increased surface temperature gradient. The volume and the surface temperature gradients of the brake discs were determined with the involvement of the hypothesis of summation of temperatures on the surface when you post the generated electric currents. It was found that in the surface layer of the working surface of a solid brake disc at its pulse heating under the influence of the temperature of the flash nucleate cracks due to the thermal fatigue of the material of the disk. The features of the design of the brake discs were considered as well. On the basis of the calculation and the experimental data we have shown a correlation between the emissivity of brushed and polished surfaces and their areas in the disk-to-pad brakes when using solid and self-ventilated discs
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EFFECT OF ELECTROMAGNETIC FIELD LOW FREQUENCIES IN THE TECHNOLOGY OF DRYING MANGOES AND PAPAYAS
DescriptionThe intensity of drying process depends on the speed of movement of the moisture inside the object and the speed of its removal from the surface. To accelerate the drying process, temperature gradient is often regulated, which causes large power consumption. Currently, they are different methods in used for intensifying the process of drying of plant material which are physical, mechanical, chemical and electrical method. Data of literature review show a lack of data on the impact of synergies of lower frequency on the efficiency of drying plant material. Accelerating the drying process of fruit can be achieved by combining low – temperature of drying with a synergistic lower frequency of electromagnetic field. The results of the studies on the development of technologies to accelerate the drying process of mango and papaya fruit are presented in this article. The role of the electromagnetic field, on the intensification of the drying process and on the inhibition of the microflora of mango and papaya, during drying is studied. Effect of the synergistic electromagnetic fields of different frequencies leading to the death of microorganisms, as well as the drying rate of mango and papaya fruit is analyzed. The optimal technological parameters of low frequency electromagnetic field on drying of mango and papaya fruit are determined. Biochemical changes of mango and papaya fruit during drying are given. Technological parameters of the powder mango and papaya obtained by combining low temperature treatment with the synergy of low frequencies are described
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Description
The article looks at the current state of energy in Vietnam and the selection of new Russian steam turbines for operation in combined gas-steam plant in Vietnam. The calculated results of thermal performance scheme 3x1 with combined gas-steam plant 1090 MW based on the Russian steam turbines K-330-240-2 and on the steam turbines TS2A40 Mitsubishi (station PhuMy-1, Vietnam). It also looks at the influence of the efficiency of high-pressure cylinders of Russian steam turbine K-330-240-2 on the efficiency and power of a gas-steam plant 3x1 with 1090 MW, increasing the efficiency of high-pressure cylinder of steam turbine through the use of honeycomb seals in flow part
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Description
The article is devoted to the gradual development of an information system for automated distribution of applications, the development of the necessary organizational diagrams, decomposition charts, as well as constraints the design stage. With the help of a program complex, the request from the client is submitted to the Deputy Director for production, which makes the decision about treatment (accepts or cancels the request). Also via software package, the application is sent to the Deputy Director for the status of implementation, as well as the Director, the chief accountant and the client. Each Department has the ability to contact the Deputy Director for operations for the consultation when a problem occurs with the implementation of the application. After obtaining the status of completed applications in the software package, the chief accountant reports to the Director. A set of methods and techniques of organization of information processes in production systems which allow the selection and the use of an information technology solution for the synthesis of knowledge about the work situation is the content of the concept of formation of information resource management for system knowledge-intensive production. Management system information space manufacturing organizations are formed in a specific environment, which is characterized as an information resource management system – a system of organization of internal and external flows of information, as well as methods and tools for searching, processing and distribution of information in the organization
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THE STAGE OF COMPLEX SOFTWARE DEVELOPMENT FOR REMOTE PROJECT MANAGEMENT
DescriptionThe article is devoted to the gradual development of the complex software development for remote project management, the development of the necessary organizational diagrams, decomposition charts, as well as constraints the design stage. A set of methods and techniques of organization of information processes in production systems allows the selection and the use of an information technology solution for the synthesis of knowledge about the work situation; it is the content of the concept of formation of information resource management for system knowledge-intensive production. Management system of information space in manufacturing organizations is formed in a specific environment, which is characterized as an information resource management system – a system of organization of internal and external flows of information, as well as methods and tools for searching, processing and distribution of information in the organization. At the design stage of the systems during the development of large automated, technology, energy, aerospace, information and other complex complexes experiencing the problems associated with less consideration of the properties and laws of functioning of elements, and more - with a choice of the best structure, optimization of interaction of elements, the definition of optimal modes of their functioning, the influence of the external environment, etc. As we increase the complexity of the system this complex system-wide issues play more significant place
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FORMATION A STRATEGY OF SOCIOECONOMIC SYSTEM’S DEVELOPMENT IN THE RESOURCE-LIMITED CONDITIONS
DescriptionIn the article the structural model of the socio-economic system is presented as a management object. We have described the levels of creation of mathematical estimation model of the socio-economic system’s state, which on the basis of the aggregated estimation of management factors array allows selecting the primary purposes of socio-economic system’s development. The main socio-economic system’s processes in the production of goods and services are presented as complex activities. Determining methods for the modern market share occupied by socio-economic system, socio-economic system’s actual share offers on the region market, the demand for goods and services in the region, the amount of income from the activity by mathematical estimation model of the socio-economic system’s state are offered. The amount of the budget is defined as the sum of the socio-economic system profits from commercial activities and the size of public funding on the orders. Evaluation of resource support for activities described in the article is proposed. The way to solve the actual problem management - determining the socio-economic system’s priorities with limited material and financial resources is offered. We have also presented an algorithm of determination of aims of the development on the basis of estimation model of the socio-economic system’s state, foreseeing determination of external and internal factors on directions activity and forming of their aggregated estimations. The operative management in a socio-economic system allows us to react immediately to changing of key indexes of the systems and also allows using the limited resources rationally, which is very actual in modern economic conditions
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PYROlYSIS RUBBER WASTE REPROCESSING FACILITY WITH MINIMAL ENVIRONMENT IMPACT
DescriptionTo solve the problem of reprocessing and use of rubber waste in Russia it is necessary to develop and adopt a set of measures regulating the procedure for their accounting, collection, storage and delivery for processing, as well as preparation and promotion of legislative acts at federal and regional levels, stimulating an increase in complete renovation and recycling of used tires. Russia has seen a steady increase in quantity of waste; fundamental changes to this trend in the nearest future are not expected. This is obviously due to the growth of industrial production and the level of final consumption. In this case, wastes of consumption will grow faster than production waste due to advanced growth of products of final consumption - primarily household, computer and electronic equipment, household items, clothes, cars, etc. [2]. There are several methods of used tires and rubber waste reprocessing in general, but we focus only on the pyrolysis process, as one of the most efficient and environmentally friendly. Pyrolysis is thermal decomposition of many organic and inorganic compounds. In a narrow sense, the natural decomposition of organic compounds with air deficiency. In a wider sense - decomposition of molecular entities constituting less heavy molecules or elements under the action of raising the temperature