Herald of Dagestan State Technical University. Technical Sciences最新文献_第6页

Statement of the problem modeling the process vacuum microwave drying for determining temperature fields in foamed suspensions 真空微波干燥确定泡沫悬浮液温度场的过程建模问题说明

Herald of Dagestan State Technical University. Technical Sciences Pub Date : 2023-08-01 DOI: 10.21822/2073-6185-2023-50-2-153-159

V. Tkach, G. Magomedov, A. Shevtsov

引用次数: 0

Methodological aspects of optimization of energy consump-tion costs of low-rise buildings with a built-in air heat pump 采用内置空气热泵的低层建筑能耗成本优化的方法学方面

Herald of Dagestan State Technical University. Technical Sciences Pub Date : 2023-08-01 DOI: 10.21822/2073-6185-2023-50-2-177-187

E. Krupnov, I. A. Zaitseva, S. Loginova, I. S. Zaitsev

{"title":"Methodological aspects of optimization of energy consump-tion costs of low-rise buildings with a built-in air heat pump","authors":"E. Krupnov, I. A. Zaitseva, S. Loginova, I. S. Zaitsev","doi":"10.21822/2073-6185-2023-50-2-177-187","DOIUrl":"https://doi.org/10.21822/2073-6185-2023-50-2-177-187","url":null,"abstract":"Objective. The rational use of fuel and energy resources is one of the urgent problems. One of the promising ways to solve this problem is the use of environmentally friendly energy-saving air source heat pumps based on the use of non-traditional energy sources. The use of such innovative energy-saving technologies requires not only modern architectural and planning, design and engineering solutions, but also sound methodological recommendations for as-sessing their energy efficiency and feasibility. The article presents a methodology for calculating the consumed electrical energy and heat generation, as well as the seasonal indicator of energy efficiency in the operation of an air source heat pump.Method. The technique takes into account, as input data, experimental data from tests of high-voltage heat pumps in terms of heat output depending on the change in the temperature of the source of low-grade heat and the temperature regime of the coolant.Result. The need to develop a methodology is due to the shortcomings in the regulatory documents of the methodological basis for optimizing energy costs and heat generation by heat pumps. The accuracy of calculating the operating costs that will occur during the heating period of the air source heat pump (AHP) depends on the correct accounting of the required heat load of a low-rise building and the consumption of electricity to ensure it.Conclusion. This technique can be applied not only to calculate the annual operating costs of using a heat pump and determine the structure of energy consumption (thermal and electrical), but also to optimize the energy parameters of HHP with an assessment of the energy efficiency of different options for their configurations.","PeriodicalId":202454,"journal":{"name":"Herald of Dagestan State Technical University. Technical Sciences","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125763816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling of humidity stresses in a soil half-space 土壤半空间湿度应力的模拟

Herald of Dagestan State Technical University. Technical Sciences Pub Date : 2023-08-01 DOI: 10.21822/2073-6185-2023-50-2-160-168

E. Agakhanov, C. A. Agakhanov, G. Agakhanov

{"title":"Modeling of humidity stresses in a soil half-space","authors":"E. Agakhanov, C. A. Agakhanov, G. Agakhanov","doi":"10.21822/2073-6185-2023-50-2-160-168","DOIUrl":"https://doi.org/10.21822/2073-6185-2023-50-2-160-168","url":null,"abstract":"Objective. Solving the issues of reliability, durability and efficiency of buildings and structures is inextricably linked with the behavior of soils in their foundations. In order to establish a more realistic behavior of soils, the paper considers the determination of their stressstrain state, taking into account new factors, including physical influences, in particular, humidity.Method. Representing the structure of the soil in the form of a model composed of two elastic and one viscous elements, and assuming that the properties of the elastic elements do not change with changes in humidity, mathematical modeling of moisture stresses in the soil half-space was performed. The expediency of this model is explained by the fact that the transition to overly complicated material structure schemes introduces few significant corrections into the deformation laws and leads to serious calculation difficulties.Result. Replacing true time with conditional time leads to a significant simplification of the solution of the equation, since it reduces one part of it to a differential linear operator with constant coefficients. In this case, the opposite part can usually be considered as a given function of conditional time. The maximum value of stresses was obtained at full soil moisture, very low moisture intensity and very intensive moisture.Conclusion. By setting the appropriate moisture intensity, you can get the maximum stress that does not exceed the specified allowable value.","PeriodicalId":202454,"journal":{"name":"Herald of Dagestan State Technical University. Technical Sciences","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126677107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vibration of a Beam with Concentrated Masses on Elastically Damping Supports 弹性阻尼支承上集中质量梁的振动

Herald of Dagestan State Technical University. Technical Sciences Pub Date : 2023-08-01 DOI: 10.21822/2073-6185-2023-50-2-169-176

A. Kaziev, I. I. Kishit, A. M. Zhinov, K. M. Karchaev, A. A. Berbekov

引用次数: 0

Application of modified genetic algorithms for solving evolutionary problems of the theory of schedules 改进遗传算法在调度理论进化问题中的应用

Herald of Dagestan State Technical University. Technical Sciences Pub Date : 2023-07-31 DOI: 10.21822/2073-6185-2023-50-2-90-97

D. S. Zakharov

引用次数: 0

Assessment of information security risks of automated system using neuro-fuzzy logic 基于神经模糊逻辑的自动化系统信息安全风险评估

Herald of Dagestan State Technical University. Technical Sciences Pub Date : 2023-07-31 DOI: 10.21822/2073-6185-2023-50-2-15-24

A. Aydinyan, O. Tsvetkova

{"title":"Assessment of information security risks of automated system using neuro-fuzzy logic","authors":"A. Aydinyan, O. Tsvetkova","doi":"10.21822/2073-6185-2023-50-2-15-24","DOIUrl":"https://doi.org/10.21822/2073-6185-2023-50-2-15-24","url":null,"abstract":"Objective. Automated systems are widely used in production, and an important criterion for their reliability is information security. The aim of the study is to provide a balance between possible losses as a result of the implementation of threats and the cost of protection tools that reduce risks using neuro-fuzzy logic.Method. The developed model is based on the use of fuzzy logic.Result. A model of integrated information security risk assessment has been obtained, which can be practically applied for a comprehensive analysis of the effectiveness of organizing a protection system for automated systems operating in various fields of activity. The risk indicators of information security of an automated system, described with the help of linguistic variables, are revealed. Based on these indicators, information security risk assessments were obtained from the state of: software; technical support; information support; organizational and methodological support; the level of training and motivation of employees. The fuzzy production rules of the model are formulated to determine the integrated assessment of the information security of an automated system, providing a full account of all factors that have a significant impact on the level of security of an automated system.Conclusions. A feature of the proposed approach is the formalization of the assessment process, reducing the level of subjectivity in the formation of risk assessments.","PeriodicalId":202454,"journal":{"name":"Herald of Dagestan State Technical University. Technical Sciences","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133112638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Some issues of multi-criteria optimization of parameters of complex systems 复杂系统参数多准则优化的若干问题

Herald of Dagestan State Technical University. Technical Sciences Pub Date : 2023-07-31 DOI: 10.21822/2073-6185-2023-50-2-67-75

R. Guseynov, M. R. Guseynova, K. A. Alieva

{"title":"Some issues of multi-criteria optimization of parameters of complex systems","authors":"R. Guseynov, M. R. Guseynova, K. A. Alieva","doi":"10.21822/2073-6185-2023-50-2-67-75","DOIUrl":"https://doi.org/10.21822/2073-6185-2023-50-2-67-75","url":null,"abstract":"Objective. The purpose of the study is to substantiate the design criteria for optimality, taking into account the multi-criteria purpose and functioning of the object.Method. The study was carried out on the basis of multicriteria optimization methods, the hierarchy analysis method, the convolution method, and heuristic methods.Result. The paper describes general problems of multicriteria optimization of mechanical systems. The importance of the problem of substantiating the design criteria for optimality, taking into account the multi-criteria purpose and functioning of the object, and introducing quantitatively measurable goals from a variety of alternative options is indicated. It is noted that the choice and formation of a generalized optimality criterion is the most responsible in solving optimization problems. The need to ensure the correctness of the application of one or another convolution method is indicated. Various approaches to the formation of a generalized optimality criterion are analyzed. Their features, advantages and disadvantages are given. The possibility of correcting parametric constraints in problems of improving optimal solutions is pointed out.Conclusion. When solving multi-criteria problems, it is necessary to pay great attention to both the formulation of the problem and the choice of a system of criteria and the implemented method for solving the problem.","PeriodicalId":202454,"journal":{"name":"Herald of Dagestan State Technical University. Technical Sciences","volume":"411 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123564399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Pretexting and means to counter it 找借口和对付它的方法

Herald of Dagestan State Technical University. Technical Sciences Pub Date : 2023-07-31 DOI: 10.21822/2073-6185-2023-50-2-109-116

U. A. Mikhaleva

引用次数: 0

Analysis of performance indicators of computer systems software on objects of special importance 分析计算机系统软件对特殊重要对象的性能指标

Herald of Dagestan State Technical University. Technical Sciences Pub Date : 2023-07-31 DOI: 10.21822/2073-6185-2023-50-2-98-108

V. V. Konobeevskikh, A. O. Efimov

{"title":"Analysis of performance indicators of computer systems software on objects of special importance","authors":"V. V. Konobeevskikh, A. O. Efimov","doi":"10.21822/2073-6185-2023-50-2-98-108","DOIUrl":"https://doi.org/10.21822/2073-6185-2023-50-2-98-108","url":null,"abstract":"Objective. The purpose of the article is to study the performance indicators of software aimed at improving the level of security at objects of particular importance. To date, the issue of improving the hardware and software components of the security system at a particularly important facility, taking into account its specifics and ensuring anti-terrorist measures, is quite urgent. There is an urgent task of evaluating the software of the physical protection system (SFZ) of an object of particular importance, while one of the main questions is which quality indicators to take into account and which methods to use when obtaining objective data, taking into account the specifics of the object of research and the need to increase anti-terrorist measures. In this article, it is proposed to analyze the performance indicators of computer systems software on objects of special importance.Method. To achieve this goal, such methods as system analysis, computational and expert statistical are used.Result. The paper presents an alternative approach to the analysis of the parameters of the effectiveness of software in relation to the components of the integrated complex (IC) SFZ, which consists in the transition from quantitative to qualitative assessments, the use of expert knowledge and statistical processing of information received from them. The proposed approach makes it possible to use a single measurement scale, as well as simplify the procedure for measuring the values of individual performance indicators of the software of the subsystems of the IC SFZ during operation at an object of particular importance.Conclusion. The results obtained can be used for a comprehensive assessment of the operation of software at facilities of particular importance, as well as to increase its security level.","PeriodicalId":202454,"journal":{"name":"Herald of Dagestan State Technical University. Technical Sciences","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130527215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of artificial intelligence technologies in HR management 人工智能技术在人力资源管理中的应用

Herald of Dagestan State Technical University. Technical Sciences Pub Date : 2023-07-31 DOI: 10.21822/2073-6185-2023-50-2-117-125

S. V. Okladnikova, A. S. Pankrashov

{"title":"Application of artificial intelligence technologies in HR management","authors":"S. V. Okladnikova, A. S. Pankrashov","doi":"10.21822/2073-6185-2023-50-2-117-125","DOIUrl":"https://doi.org/10.21822/2073-6185-2023-50-2-117-125","url":null,"abstract":"Objective. The purpose of the study is to analyze the possibility of using AI technologies to solve problems related to the selection of employees in project teams, based on production indicators and HR metrics of personnel.Method. Based on the fact that in the field of AI, methods mean algorithms by which tasks are solved, the following number of methods related to AI theory were identified: neural networks, fuzzy logic, expert systems, evolutionary modeling, Machine Learning.Result. An example of the use of AI is given in a situation where it is necessary to recruit personnel for a project based on the length of service and the degree of workload (where a scale with values from “highly loaded” to “not loaded” is used for workload). For the described example, an explanation is given that reveals the use of AI technologies (such as question-and-answer systems) in order to form HR metrics and production indicators. Additionally, the process of applying the objective function to obtain a numerical coefficient based on individual metrics or a combination of them is described in order to make a decision corresponding to its value based on the resulting indicator of the function.Conclusion. Within the framework of the conducted research, the historical patterns that led the field of personnel management to transformation and which made the use of AI technologies relevant in this area were considered. Continuous development and implementation of intelligent tools in the practice of project management facilitates HR processes and increases the efficiency of employee management. The use of AI technologies considered in the study will help to successfully monitor the state of both the project and the project team, which will have a positive impact on the productivity and profit of the enterprise.","PeriodicalId":202454,"journal":{"name":"Herald of Dagestan State Technical University. Technical Sciences","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123837280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0