№ 112(8), October, 2015
Public date: 30.10.2015
Archive of journal: Articles count 151, 381 kb
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OPTIMIZATION OF THE FILLABILITY OF CLAW-SHEARING DEVICE
DescriptionDuring the study, the authors have solved the problem of determining the minimum number of operations by optimizing fillability of a claw-shearing device with trees. Sufficient optimality conditions have been obtained. The numerical method for solving the optimization problem was developed. We have also performed a numerical experiment
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SERVICE LIFE OF THE SUPPORT ROLLERS OF TRACKED TIMBER HARVESTING MACHINES
DescriptionDue to strict economical factors, determining a service life of the structural components of a tracked timber-harvesting machine (TTHM), including the support rollers becomes a key issue for the manufacturers and customers. With that, optimum relationship between the original cost of the support rollers and their life cycle cost for maintenance and repair during the entire service life shall be observed. The timber harvesting machines are operated under severe environmental and production conditions. In the course of operation, they meet variable obstacle, including stubs, stones, fallen trees, etc., which in their turn affect negatively the service life of the support rollers. This article offers a research of the service life of the tracked timber harvesting machine support rollers. It describes main defects of the support rollers, including operational, mechanical and thermal ones, as well as embedded flaws and dynamic defects. It also presents the factors affecting the support rollers' wear. The article presents a service life-determining model where the following principle can be generally applied. Service life of a support roller is determined by its admissible operational wear-out divided by actual factor for this support roller and operational conditions
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IMPLEMENTATION OF CONTROLLING PRINCIPLES FOR HOUSING AND PUBLIC UTILITIES SECTOR
DescriptionIn the modern economic conditions, the housing and communal sector is the most problematic as the executive authorities’ opinion and Russian population opinion. The reform aims are deprivatization of objects the industry, transfer it in temporary managed by private business. In such conditions, there is a need for a new or upgrade existing mechanism of management of sector housing and communal services economic entities. One of the elements of innovation management mechanism is controlling. The definitions of this category madу by Russian and foreign scientists are considered in the article. The author have been summarizes the theoretical principles, practical experience. The model of housing and communal services financial controlling is designed. It contains the following elements: goals, objectives, subjects, object, function, types. Each element was described in detail and classified by type. In addition, the external and internal factors affecting the construction of controlling system in economic entities of the industry of housing and communal services are designated and marked. The advantages of introducing a system of controlling the activities of organizations in the utilities are described. The authors have identified and described in detail the difficulties of controlling introduction in the economic agents of industries management system
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Description
We have investigated the influence of nickel oxide in the amount 100, 1000 mg/kg of the soil (1, 10 MPC), combined with the influence of variation magnetic field with induction of 50, 100 and 650 μT power frequency of 50 Hz on the enzyme activity and phytotoxity of the southern chernozem. We have established significant reduction of enzyme activity of catalase and length of roots after the influence of the variation of magnetic fields. Pollution by nickel as an independent factor caused stimulation of enzyme activity of a dehydrogenaze and length of roots of radish. The greatest inhibition of the activity of all indicators was observed at joint influence of magnetic fields and pollution by nickel of concentration of 1 maximum permissible concentration (1 MPC). Enzyme activity of dehydrogenaze was significantly stimulated (p
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ANALYSIS OF THE PROBLEM AREAS IN THE KRASNODAR TRANSPORT NETWORK AND ACTIVITIES TO DISCHARGE THEM
DescriptionThe main causes of congestion in the city are single-level intersections regulated by traffic-lights and an insufficient number of lanes. The article provides an analysis of two problematic intersections and suggestions for their discharge. For trilateral junction of Yaltinskaya - Uralskaya with an electric model it was determined that the number of lanes needed for different areas increased to 4 - 8. However, the causes of the conflict - the intersection of two competing streams – the turn from the bridge to Yaltinskaya street to Uralskaya and oncoming traffic from Yaltinskaya to Severnaya. Traffic light regulation does not solve the problem and helps creating congestion. It is proposed to separate traffic flows on different levels with the help of the overpass on Yaltinskaya, and the stream from Yaltinskaya to Severnaya goes on the overpass, and turning stream to Uralskaya - under the overpass. Traffic flows at the intersection on Severnaya and Turgeneva with traffic light regulation device can be diluted with a circular or a turbo intersection
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THE STATE POLICY OF OF CLUSTER FORMS IN ORGANIZATION OF INTERACTION IN AGRARIAN FORMATION
DescriptionThe optimization issues of governance and the development of agriculture sector are particularly relevant in times of financial sanctions, implementation of the strategy of import substitution. Integration is the one of these mechanisms. In the article, we have discussed in detail the historical aspect of the appearance agroindustrial integration in Russia. The authors highlighted the negative aspects constraining the development of integration processes in the industry. The agro-industrial complex is considered as a set of regional and microcomplexes. The article identified three main areas of the industry. Its balance is able to provide dynamic and sustainable development of agriculture. Dynamics of the share of industry in the formation of the key indicators of the Russian economy are presented. It demonstrates the need to solve issues of increasing the efficiency of all agrarian formations. The authors proposed industrial and economic way out of the current crisis on the results of the research. The Government support of agriculture is the main instrument of agrarian policy, especially in times of economic crisis. The authors proposed a cluster approach to economic development as a priority. It allows reaching high competitiveness and stability of economic systems of cluster. In the article the advantages of creating clusters in the regional economic system are presented. We have summed up the implementation of the previously developed innovative, systemic management model
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Description
The analysis of social and economic development of countries in the conditions of the globalization of the world economy which is carried out with the use of thermo-dynamical model showed that interaction of the open economic systems standing on different levels of development can lead to absorption or destruction of one systems by others that finally will lead to "thermal death" in economy (stagnation). The closed economic systems can communicate with other countries by means of international trade. Less developed countries can't compete with industrially developed states and will inevitably get under their influence. The isolated economic systems can develop only in the presence of domestic market, resources and rigid social structure. Introduction of the anti-Russian sanctions and other external factors led to restriction of the influence of the foreign capital. Innovative activity in economy and strengthening of government institutions might be observed as a result. The thermo-dynamical model shows that partial isolation of the developing economic system possessing sufficient production and scientific potential leads to stabilization of its structure and growth of the innovative activity
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PROSPECTS OF SMALL HYDROPOWER PLANTS IN THE PIEDMONT AND MOUNTAIN STREAMS
DescriptionThe article reveals the advantages of low energy in comparison with other renewable energy sources. It is shown that broad prospects are visible for small (100 - 1000 kW) and micro hydropower plants (up to 100 kW) when used in the foothill and mountain areas. At the same time, the construction of hydropower plants of sleeve-type has improved the operational and technical characteristics, among other types of small-scale power plants. The article presents main analytical expressions for calculating hydroelectric power generator and it has built graphic dependences for the power generator of pressure and water flow. To improve the performance of small hydroelectric power plants we have proposed using unregulated water turbine and non-contact induction generator in their construction, thus, we could stabilize voltage and frequency directly by the frequency converter. Depending on the requirements of consumers to power supply reliability and electricity quality, we have offered several options for structural and circuit solutions of autonomous systems of electrosupply, made using small hydroelectric power plants. Thus, we can greatly enhance the efficiency of such systems if they are used with other types of renewable sources, such as windfarms or solar power plants
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A CENTRIFUGAL DEVICE WITH SUPPLY OF MATERIAL ALONG SHOVELS
DescriptionIntroduction of mineral fertilizers is performed by centrifugal devices. By quantity of disks, centrifugal devices distinguish one disk and two-disk. On the volume of capacities for storage of mineral fertilizers distinguish bunker and body. Bunker contains volume from 0.5 to 1.5m3. Body has capacity more 2m3. Advantages of bunker centrifugal devices are noted. Material from the bunker moves on a centrifugal disk perpendicular to the rotation plane. At the time of material capture by shovels, crushing of particles and their reflection from shovels and the plane of a disk takes place. It leads to increase in unevenness of introduction of mineral fertilizers. At EMTP chair of the Kuban GAU the centrifugal device with supply of material along shovels is developed. The scheme of the centrifugal device is submitted. A device for introduction of mineral fertilizers contains the one-disk centrifugal device, the cone-shaped bunker and the cylindrical batcher. The batcher gate regulates supply of material on a disk. The technique of determination of design and technological data of the developed design is presented. The place of supply of material on a disk is regulated by rotation of the batcher round a vertical axis. The norm of supply of material on a disk changes the batcher gate. Preliminary control of a place of giving is made on model material with coefficient of friction of f 1. Under production conditions, turn of the batcher from initial situation is made depending on coefficient of friction of the f2 fertilizers. At f1 ˃ f2 turn of the batcher against the direction of rotation of a disk, and at f1 ≤ f2 turn of the batcher in the direction of rotation of a disk
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TO THE QUESTION OF THE INTEGRITY OF SOCIO-ECONOMIC SYSTEMS
DescriptionThe article considers the main principles of the system approach and their use in the general disclosure mechanisms in the organization of the systems as holistic entities. Ontological and epistemological lines of the concept of the system and highlights the main properties of systems are reflected. Since the system acts as a form of organization of tangible and intangible objects, integrity is determined as the necessary property of sustainable living systems. The concept of sustainability from the point of view of general systems theory is considered, its types are distinguished. Features of the economic systems and the specificity of the concept of their stability is described. It is marked that the majority of biological, technical, economic and other complex systems are characterized by non-Gaussian distribution and as a necessary formal feature of consistency (integrity) of the studied object the presence Zipf-distribution in the population can be used. Differences between the coenoses from deterministic systems and probabilistic objects are marked. Procedures performed in the course of the ranking analysis and the theoretical aspects of optimization of cenoses by holding an item or parametric optimization are considered. The proposals on the use of ranking analysis and rank distributions that are widely used for the study of technocenoses, in the research process and the formation of economic systems are promoted