Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
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383 kb

VIBRATION TECHNOLOGY WITH A LARGE AMPLITUDE OF PARTICLE MOTION OF FEED COMPONENTS

abstract 1071503118 issue 107 pp. 1807 – 1824 31.03.2015 ru 811
The article has revealed the contradiction between the way of technological impact and the means of implementation of technological transport in existing processes of feed preparation. There has been shown the possibility of eliminating this contradiction by menus of completely new technological equipment on the basis of relative screw drums and the opportunity to improve their productivity. There are no exciters in the offered design of vibrating machines. There is no need for them because the move mend of mass loading particles is provided by the original constructions of relative screw drums committing a rotary motion around its own axis. For implementing of feed preparation process the geometry of the relative screw drum and its dynamism must be individual: the shape, spatial orientation, the impact of forces providing feed components particles simultaneously with rotational-translational and vibrational motion. In the result, the continuously running through the inner cavity of the relative screw drum particles of feed components perform rotational-translational movements with super imposed vibrations inside this drum, due to this process the particles of feed components are mixed intensively
285 kb

VIBRATING TOOL FOR SOIL TREATMENT

abstract 1241610090 issue 124 pp. 1375 – 1386 30.12.2016 ru 293
On the basis of the analysis of existing technical means for tillage in this article we propose a new technical means of vibration action including rectangular welded rack with hinge systems, adjusting the depth of tillage. Fixing of the working bodies and working bodies are made in the form of racks with chisels and arrow-shaped claws differ in that there is a shaped hole is made in the upper side of rack where a mounted solenoid is. It is mounted on a rack by means of casing and screws, and the solenoid is made in the form of a coil with a head and spring and communicated with the electrical system of the tractor via the relay-breaker and a regulator are located on the rack. This vibrating tool presumably will lessen the resistance of the soil affecting on the working bodies, will eliminate the sticking effect of elements of working bodies and thereby the quality of the soil tillage will be improved, it will allow to reduce energy consumptions of working process up to 30%, it reduces the emission of harmful substances from combustion of diesel fuel into the atmosphere. The invention relates to agricultural engineering and can be used for tillage on various agricultural backgrounds and with different densities
186 kb

VEHICLE DETECTION METHOD IN SENSITIVE ZONE OF PASSIVE ACOUSTIC TRANSPORT DETECTOR

abstract 0731109037 issue 73 pp. 395 – 410 30.11.2011 ru 1284
In this article, transport detection method in sensitive zone of passive acoustic transport detector is considered. The transport speed estimation by acoustic data principle is described, an analytical survey for moving object detection is performed, and the mathematical model of described transport detector is investigated. As the result of this work, a transport detection criteria using acoustic data is suggested
316 kb

UTILIZATION OF RICE STRAW BY CHOPPING AND SPLITTING WITH A POST-BLADE CYLINDER

abstract 1331709038 issue 133 pp. 486 – 497 30.11.2017 ru 579
The article focuses on the utilization of rice straw by chopping and splitting with a post-blade 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 non-grain 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
128 kb

USING TECHNOLOGIES OF EXPERT SYSTEMS FOR SECURITY IN INFORMATION SYSTEMS

abstract 1101506119 issue 110 pp. 1818 – 1825 30.06.2015 ru 909
The article is devoted to the expert systems technology using to monitor the correct operation of the software and databases. It is noted that the main issues of security management in critical information systems is a process of observation and collection of information in a computing environment. Observation results should be evaluated and processed by an expert on security and then recorded in the database of expert systems. One of the possible options for security management of distributed computing network - creating a security machine. It will ensure: minimum response time to external perturbations; the accuracy of the audit protected by S-interface and independent decision-making process of the state of the controlled elements of information systems. After that, the agent is completely worn out; it is destroyed and replaced by a new one. This aging mechanism protects agent from analyzing and from external attacks
245 kb

USING OF ULTRASONIC ENERGY FOR IMPROVEMENT OF MECHANICAL AND TRIBOTECHNICAL PROPERTIES OF COMPOSITES BASED ON POLYTETRAFLUOROETHYLENE

abstract 0701106026 issue 70 pp. 368 – 377 30.06.2011 ru 2260
In the given article, the influence of ultrasonic oscillations on mechanical and tribotechnical properties of polymeric composite materials based on polytetrafluoroetylene is considered
147 kb

USING GENETIC ALGORITHMS FOR TRAINING NEURAL NETWORKS

abstract 0911307078 issue 91 pp. 1114 – 1123 30.09.2013 ru 1552
In this article we have shown how to find sub-optimal neural networks using genetic algorithms
229 kb

USING DISCRETE WAVELET TRANSFORM FOR CALCULATION OF TRANSIENT REGIMES OF POWER SUPPLY SYSTEMS

abstract 1131509023 issue 113 pp. 286 – 296 30.11.2015 ru 1599
This article utilizes wavelet analysis, a relatively new mathematical tool, designed to develop an algorithm of analysis for electrical transients in electric power systems. Techniques, which are currently used, fall into two main categories: time domain or the integral transform domain. Both of the aforementioned categories can be stressed when solving equations with a wide spectrum or when a system of equations is subjected to a nonstationary forcing function. One of the benefits of wavelet analysis, however, is the ability to resolve nonstationary nature signals easily. Based on the discrete time domain approximation, the system components such as resistor and inductor are modeled in discrete wavelet domain for purpose of transient analysis. The method can be implemented by any kind of orthogonal wavelet transform. Computer simulations verified the effectiveness of the proposed method. The proposed algorithm can be implemented to calculate the shortcircuits in electric power systems
479 kb

USING DISCRETE WAVELET TRANSFORM FOR CALCULATION OF TRANSIENT REGIMES OF POWER SUPPLY SYSTEMS

abstract 1131509060 issue 113 pp. 814 – 825 30.11.2015 ru 1014
This article presents an algorithm based on the discrete wavelet transform for the analysis of current root mean square (RMS) value and total harmonic distortion (THD) in power systems. Power quality indices play an important role in case of non-stationary distorted waveforms, where neither a frequency-domain-based approach using fast Fourier transform tools nor a timedomain-based approach using real time data give satisfactory results. The algorithm proposed decomposes the current waveforms into uniform frequency bands corresponding to the odd harmonic components of the signal. The proposed algorithm overcomes the spectra leakage problem. Computer simulations verified the effectiveness of the proposed algorithm
885 kb

USING CONVOLUTIONAL NEURAL NETWORKS FOR LICENSE PLATES RECOGNITION. ADVANTAGES AND DISADVANTAGES IN COMPARISON WITH TEMPLATE-BASED METHOD

abstract 1201606112 issue 120 pp. 1706 – 1715 30.06.2016 ru 279
Car license plates recognition problem is one of the typical tasks of computer vision. Video surveillance software usually provides license plates recognition function. Meanwhile, there are many approaches to solve this problem, where template-based methods are the most common. Such methods providing predictable and short enough execution time, and little percent of mistakes. However, such methods are far less effective in case there is a need to recognize car’s license plate, which may be located in unpredictable place, typed in undefined font and on non-standard background, or without strict formatting. For example, USA car license plates. One of the methods to increase effectiveness and quality of such license plates recognition is to use neural networks. It is assumed, that neural networks usage can significantly increase recognition quality. Nevertheless, neural networks usage entails difficulties of it’s training, and often becomes less efficient as template-based methods usage. This article discusses probability of usage of convolutional neural network, which was trained using MNIST (Mixed National Institute of Standards and Technology) database. This article is a review of usage of templates and neural networks for car’s license plate recognition in terms of quality, performance and complexity of the usage
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