Kuban State Technological University
Author list of organization
List of articles written by the authors of the organization
-
HYDRODYNAMIC PRESSURE OPTIMIZATION METHOD IN A WELL AT ROUND-TRIP OPERATIONS
DescriptionThe aim of the article is to study the effect of velocity and acceleration of a drill string on hydrodynamic pressure in a well. We obtain the formulas of pressure versus time. We also established the method for optimizing hydrodynamic pressure in a well at round-trip operations
-
Description
The NP-problem of discrete optimization of consumption of non-renewable resources is considered in the article. It is offered to use transitions of NP-system conditions on the complete graph with number of vertexes, equal to quantity of discrete resources, for the problem decision. The purpose of such system is construction of a chain of the predetermined length and the minimum weight on the complete graph. The length of a chain defines quantity of the consumed resources. The problem factor is factorial growth of number of variants of chains on graph at linear growth of quantity of resources. The main idea consists in a finding of statistical regularities of ranks of transitions of NP-system at construction of chains with the minimum weight on graphs of the small size. Use of ranks allows to abstract from concrete weights of transitions, which are variables for each problem of optimization, and to find the patrimonial feature of all optimum decisions. It is offered to use the found regularities to solve the problems of the big dimension. As a result of researches, it has been defined that probabilities of ranks of transitions are described by geometric distribution. In the article, the algorithm of definition of parameter of geometrical distribution for a rank of each transition depending on the initial and consumed quantity of resources is presented. Realization of a method of generating of suboptimum chains is based on use of generators of the pseudo-random numbers setting values of each rank of transition of NP-system according to geometrical distribution of probabilities. It is offered two variants of generators of ranks of chains to use. Computer experiment has shown useful effect of an offered method at the decision of problems of small and average dimension
-
METHOD OF POLYMORPHIC VIRUSES DETECTION BASED ON ARTIFICIAL IMMUNE SYSTEM AND GENETIC ALGORITHMS
DescriptionThis article is dedicated to the study of the fundamental properties and components of the immune system such as B lymphocytes, the Tlymphocytes, immune system storage, primary and secondary immune response, immunological training detectors, which will be the basis of the obtained as a result of detection methods of polymorphic viruses using artificial immune systems. Polymorphism of computer viruses is the formation of a malicious program code directly during execution. Thus, it is impossible to create a unique signature corresponding to these polymorphic viruses. A similar classification problem is solved by the immune system of vertebrates, stared again met with the virus, it "remembers" him, and the next time provides effective secondary immune response. These properties of the immune system served as a prerequisite for the use of immune approaches and algorithms for solving the problems of detection of malicious code. The article identified and described their main features, proposed the idea of their implementation and software, system interactions in the immune system revealed such important features, the implementation of which will be effective in solving the problem of detection of malicious code and software. Also, for a more productive system of education is considered a class of genetic, evolutionary algorithms, described by their immediate implementation of site-specific decentralized artificial immune system, built a system of interaction of genetic and immunological algorithms.
-
05.20.01 Technologies and means of mechanization of agriculture (technical sciences)
DescriptionIn modern combine building over the past few years, there has been a trend towards increasing the productivity of machines and, as a consequence, their physical weight. However, as the weight of the combine harvester increases, the necessary condition for its movement in the field in the course of work is to meet the requirements for its support area. As a result, manufacturers have to increase the size and number of wheels of the machine. One solution to this problem is to replace the wheelset of agricultural machines with replaceable rubber track modules. In this case, the very principle of calculation of the main technical characteristics of the engine changes, and if we are talking about the drive axles of agricultural machinery, the calculation methods can be roughly approximated to the calculation of tracked machines with metal tracks. However, in the case of driven axles, there is an intersection in the calculation methods between the classic calculation of the wheel chassis and the calculation of the tracked chassis. The problem is that the tracked chassis are not usually guided like the wheels, so the calculation methods need to be refined by introducing new evaluation criteria because of new power factors in the track module. The article proposes an alternative calculation model to calculate the maximum resistance torque of a track module on a rubber track
-
METHODIC OF KNOWLEDGE ASSESSMENT WITHIN THE FRAMEWORK OF THE AUTOMATED TESTING SYSTEM
DescriptionIn this article, we consider approaches to the transfer of knowledge to students and an objective semiautomatic assessment of knowledge. The characteristic features of the application and the possibility of using cognitive training methodologies and complex systems for testing skills and the theoretical base of trainees are analyzed. The problems of development of this direction and possible ways of their solution are described. The basic concepts are introduced and the existing methods of calculating the average score for checking the student's knowledge are considered, and a new approach to solving this problem is proposed. Based on the conducted researches it is offered to use the complex system of testing of end users, which includes testing, monitoring, collecting, analyzing and displaying the results of students/groups/ course. The main requirements for the creation of such a complex and the rules to be followed are formulated for a more objective assessment of knowledge. A model of an integrated modular system for objective semi-automatic testing of knowledge through testing is described
-
Description
The article discusses the methodology of optimal configuration selection and structuring of distributed information systems for collecting and storing historical data from multiple data centers
-
SYSTEMATIC APPROACH TO THE ASSESSMENT OF HOTEL MANAGEMENT STAFF COMPETENCE
DescriptionTo deploy fully the potential of personnel competence is the key advantage of modern organizations in all businesses of the country. This is especially critical for hotel business because producing and consuming of this service is the inseparable process. The maximum deployment of potential of an employee competence can be the key competitive advantage for a hotel. To satisfy business needs we should be aware of skills and competences an employee should possess. This paper suggests the application of the Hungarian method to assess the personnel competence of an operating hotel. We also want to show the applicability and utility of this method in solving real problem of evaluating the personnel competence. To solve this problem we suggest using pairwise comparison to identify the most important sample competence, which we use as the basis for personnel competence matrix. Thus, hoteliers will be able to make their own objective assessment of the personnel competence level of 5 divisions of the hotel
-
Description
The article deals with the problems of functioning analysis of a contemporary mountain–climatic health resort and describes the perspective territories for development of mountain–climatic health resorts, as well as the necessity of creating such recreation zones and carrying out an analysis of state support mechanisms. In addition, the authors give their own methodological approach characterizing the levels of mountain–climatic health resort cluster development in the Krasnodar region
-
CREATION METHODOLOGIES OF CONSUMER VALUE OF CONFECTIONERY
DescriptionIn the article the analysis of an entity of consumer value is provided, approaches to the description of a concept of value are discussed; problems of a research and measurement of consumer value are updated. The consumer value of goods expresses in a choice from a large number of similar goods, conditions for which can be its cost, qualitative characteristics, gradations, the sizes. It is set that in case of determination of consumer value it is impossible to be guided only by its cost, here its qualitative characteristics, conditions of the supplier and the level of service will be an important index for acquisition by wholesalers. The consumer value of production proceeds from the advantages got by the buyer from his acquisition and costs of its purchase made by it. In addition, to understand priorities of the buyer, it is necessary to select analysis stages of consumer value, which are divided into several processes; they include production, a market research, and questions of sale and support of production. Authors consider the value as one-dimensional and multivariate construction, select three basic approaches to value assessment. It is set that pricing based on prime cost is made from analytics of need of the buyer, with establishment of necessity of goods for it, and its cost should characterize its advantages
-
METHODOLOGY OF OPTIMAL PLACEMENT OF TRADE NETWORK OBJECTS
05.13.18 Mathematical modeling, numerical methods and software complexes
DescriptionThe article outlines the idea of a methodology for locating distribution centers of a spatially distributed distribution network without restrictions on the territory. In the past fifteen years in Russia, the profitability of offices and retail space has been significantly higher than logistic complexes. At present, it is possible to talk about a change in the investment attractiveness of the segment of distribution centers and storage facilities. The method consists in solving three problems: determining the number of distribution centers that need to be placed using the method of comparing options; determination of the best locations for placement of distribution centers using the ant colony algorithm; identification of the best location from the previously determined ant colony algorithm using the penalty function method. This method of optimal placement of objects of a spatially distributed complex can be applied not only to the distribution network, but also to any transport company with distribution centers, for example, a logistics company, delivery services, etc.