№ 133(9), November, 2017
Public date: 30.11.2017
Archive of journal: Articles count 94, 254 kb

Description
Based on the analysis of modern scientific approaches to the construction of complex informationmeasuring systems, we have formulated a circuit solutions model of a distributed system of control of parameters of soil, the implementation of which will allow to build systems in small businesses

Description
Currently, there is increasingly reduced number of the sites convenient for construction. In this regard there is a question of development of new territories, for various reasons which were earlier considered economically unprofitable or unsuitable for construction. Often, for construction in the mountain area it is necessary to carry out construction of objects in landslide territories. However, landslide processes constitute big health hazard and lives of people and also safety of buildings and constructions. The main objective of engineers when performing design and exploration work on landslide territories is the determination of stability of slopes and size of landslide pressure from soil and also identification of the most dangerous combination of loadings which can demand design and construction of a construction against landslide of landslide protection structures with significant loadbearing capacity. The research presented in article allows to define the most dangerous loads affecting the stability of the slope and also of the selection of a protective construction (against landslide). Dependences of change of landslide pressure and coefficient of stability of a slope are received from action of various loadings (both static, and dynamic)

Description
The article dwells on the features of the calculation of a branched electric circuit containing one or more asynchronous shortcircuited electric motors operating with a load which depends on the parameters of the electric circuit itself. A method for solving the problem of calculating a circuit on the basis of the mathematical perturbation method is proposed

Description
The main application of tractors is in agriculture. The share of imports continues to grow in the structure of the agricultural machinery market. In recent years, many foreign tractors and agricultural machines, including John Deere, have been delivered to the fields of the Tyumen region. The rates of productivity and fuellubricants consumption for the agroclimatic conditions of the Tyumen region are not available for all tractors with agricultural machines. Therefore, for agricultural producers, their establishment becomes urgent. On the fields of agricultural enterprises of the Tyumen region, studies were conducted to establish the norms for fuel consumption and productivity of John Deere tractors with agricultural machines. The article presents the results of the study. For example, the productivity of a tractor in the «Malyshenskoye» conditions for a field located at a distance of 56 km and an average run length of 1,300 m can be in the range of 5.86.0 ha / h. Taking into account the natural and climatic conditions of the Tyumen region and the different physicomechanical composition of the soils, as well as the configuration of the fields and the run length during tillage, data were obtained of basic lubricants consumption. Recommendations on the use of fuellubricants consumption rates of modern tractors in the performance of various technological operations in agriculture will make it much easier to plan and calculate the operating costs of tractors with agricultural machines

MODELS OF NEURONS WITH MEMORY OF STATE FOR ORGANIZATION OF NEUROEVOLUTIONAL CALCULATIONS
DescriptionThe article discusses the model of a neuron with memory. The proposed model is formed based on the model of the dynamic neuron. The proposed solutions allow to efficiently model dynamic processes and to provide a twolevel scheme for evolution of neural networks. The first level of evolution is achieved using traditional neuroevolution models that allow you to create or to modify basic network settings. The second level allows you to track the history of the development process. The article presents a formal description of the proposed models and algorithms of functioning of the network, is the rationale for the use of the proposed models

UTILIZATION OF RICE STRAW BY CHOPPING AND SPLITTING WITH A POSTBLADE CYLINDER
DescriptionThe article focuses on the utilization of rice straw by chopping and splitting with a postblade cylinder. The amount of rice production and rice straw in the Krasnodar region are specified in the article, as well as methods of utilization of nongrain part of rice harvest of rice, namely, burning in the field and use of rice straw as an organic fertilizer. The article describes a research on determination of the degree of rice straw humification under natural conditions at different parameters of its crushing and patching. According to the experimental results there was constructed a graph of the degree of rice straw humification by variants of the experiment. There was offered the projected constructive scheme of mobile trailer rice straw crusher from rolls in the article. The main results which were obtained to the present moment were shown in conclusions

Description
The influence of autodisplacement in a resonancetunnel diode (RTD) on the dynamic range of amplifiers on these diodes is considered in the article. The amplification at resonance frequency is considered and the influence of higher harmonics is not taken into account, since they do not create a significant voltage drop at the nonlinear resistance of the diode. It is assumed that the gain will be sufficiently large, and then the nature of the dependence of the gain factors on the degree of regeneration will be the same for amplifiers "per pass" and "reflection". This allows us to consider the problem for both types of amplifiers on the RTD. The types of amplitude characteristics , which are possible for the RTD amplifier, are considered. The dependences of the parameter determining the dynamic range of the amplifier on the position of the operating point for several values of the product of the resistance on the direct current of the supply circuit are calculated for the value of the modulus of the maximum negative conductivity of the tunnel gap RG max. For each value of RG max for given parameters, you can determine the position of the operating point, which provides the specified amplifier mode. Dependences of the value of the dynamic range are constructed with allowance for autodisplacement and in the absence of autodisplacement for two values of the degree of regeneration. Taking into account autosplacement, two possible types of amplitude characteristics and boundaries of their existence were revealed. For these two types of amplitude characteristics, expressions were obtained that determine the dynamic range of the amplifier

Description
The work is done in scientific and practical directions for minimization of power losses in transmission of electricity to local distribution networks between the actors of the energy (producers and consumers) of energysaving technologies focused on technological activities such as modernization and reconstruction of networks. Quite often in various circuits of power systems, it is advisable to transfer energy and its power through intermediate (transit) nodes. Structural changes in the electricity sector, at present, are mainly associated with the introduction of market relations between the subjects of energy exchange; therefore, in this work special attention is paid to the problem of calculating the power losses, as it is nonlinearly dependent on the power at the nodes and branches of a network. It should be noted that the nodes in problems transit capacity could be both sources and consumers. The latter necessitated the need for search of possible ways to reduce transportation losses of energy due to both the improvement and optimization of distribution networks and through the use of intermediate transit nodes. It follows that the transportation problem in this formulation is more General and expands the possibilities of optimization of power losses for the local subsystems of the energy clusters. The work is composed of the transport matrix for solving problems transit capacity, where the algorithm taking into account the distinctive features of which consist in the use of continuous numbering of sources and consumers in the matrix, and any node can be a transit country. The transit capacity iith node Zii=0, and the dimension of the matrix in contrast to the previously considered tasks has (n+m) (n+m) and it remains square as all the transport problems of linear programming. Transit variables Xii are included in the solution of the problem with a minus sign, and all transit variables are considered basic. From the above example in the work of a number of branches of a network is minimal, which significantly reduces the cost of building and maintaining the network, and the solver minimizes the power loss between the subjects of energy exchange and, as a result to savings from the standpoint of cost of construction of the network and the management of overflows of energy in it

THE METHOD OF CALCULATION OF FILTERS FOR STATIC CONVERTERS OF ELECTRIC POWER
DescriptionOne of the important issues in the design of static converters of electric power, i.e. rectifiers and inverters, is to calculate the parameters of the output and the input filters. Output filters are designed to improve the quality of output voltage of inverters, and input filters are created to reduce ripple of the input voltage of the converter that occur when commuting power semiconductor devices, and smoothing fluctuations of the current consumed from the power supply. The complexity of analytical description of the harmonic composition of the output and the input of the voltage rectifiers and inverters makes it difficult to develop some accurate methods for calculating the parameters of their filters. At the same time, considering the discreteness of the number of possible parameters of real elements of the filter, the practical value of such techniques with a high analysis accuracy of the harmonic components is negligible. In this article, we suggest the technique of the simplified calculation of output and input filters for passive LC filters rectifiers and inverters. At the same time, the practice of mathematical modeling and design of transducers has shown that the calculations of the filter parameters for rectifiers and inverters are not significantly different from each other. Therefore, the analytical expressions for calculation of the filter parameters of rectifier used ripple coefficient, and if necessary the calculation of the filters of the inverter, instead of the pulse number in the formula can be substituted with the value of the harmonic; in addition, we have also taken into account the value of the load power factor

Description
Fruits are an important part of the diet of humans and many animals. In case of an improperly organized process of storing of fruits, the loss of mass and decrease of quality can be substantial. This makes relevant the research, aimed at enhancing existing and developing new technologies of fruits storing. In this article, the results of the investigation of influence of complex treatment of fruits with electromagnetic fields of extremely low frequency (EMF ELF) and а biopreparation on the change of microbial contamination of their surface and on the loss of mass in the process of longterm storage are revealed. Apples of the Idared variety and pears of the Conference variety were the objects of research. The change of microbial contamination of the surface of fruits, undergone a few types of pretreatment (EMP ELF, biopreparation “Vitaplan”, complex treatment “EMP ELF + the biopreparation” and no special treatment), after storing during 7 months in case of pears and 8 months in case of apples is shown in the article. It was found, that the greatest decrease of content of microorganisms on the fruits’ surface is achieved as a result of the complex treatment, combining the treatment with EMP ELF and an aqueous solution of the “Vitaplan” biopreparation. The effective parameters of such a treatment for apples and pears are represented