STUDY OF THE EFFECTIVENESS OF VARIOUS CONTROL ALGORITHMS TO ENSURE THE PROTECTION OF QUEUES FROM CONGESTION IN RESOURCE RESERVATION SYSTEMS
Controlling network congestion is a very urgent task while securing queues in resource reservation systems. This is one of the key elements, as many controllers were introduced to control overload to solve the problem. This article analyzes the impact of network workload on the performance of various active queue management controllers, including the traditional Drop Tail controller, to ensure that queues are protected from congestion in resource reservation systems. This paper presents an analysis of four possible scenarios with the same network parameters except for the network workload. The performance of each controller is measured using various performance metrics. The effect of network traffic load on the performance of network controllers can be easily observed in the four presented scenarios. The behavior of all controllers clearly indicated the effect of network traffic load on their performance. The results showed that the load on network traffic is directly proportional to bandwidth, packet loss and delay. The results can be used to create fault-tolerant resource reservation systems.
Keywords: workload, network, queues, controller, resource reservation.
METHOD OF VERBAL ANALYSIS OF SOLUTIONS FOR THE SOFTWARE SELECTION FOR CUSTOMER RELATIONSHIP MANAGEMENT
E.S. Egorova, N.A. Popova
The relevance of the article is due to the existing difficulty in making decisions in the process of choosing software products that automate business processes of enterprises, including customer relationship management. Therefore, for a diverse analysis of systems, it is proposed to use a two-stage methodology for a formalized assessment of the functionality of software and systems. At the first stage, the results of a multivariate analysis of customer relationship management software are presented. During the criteria-based assessment, the functional and instrumental characteristics necessary for products of this type were selected. The results of the analysis showed that using this approach it is quite difficult to make a decision on the choice of a product, since all systems have approximately the same sets of functional capabilities. At the second stage of the study, in the process of determining the optimal system, it is proposed to use the method of verbal analysis of solutions to find the best alternative. As a result of a formal analysis of systems using the developed software application, a potential leader was identified among the systems under consideration, however, further research involving an expert and comparing all pairs of systems according to their strengths and weaknesses made it possible to distinguish another alternative among customer relationship management systems. The method of verbal decision analysis based on the opinion of experts in the field of design allows you to choose the most effective tool in a specific industry area, and the developed software application allows you to optimize the work of analysts.
Keywords: verbal decision analysis method, software, customer relationship management, CRM system, formal analysis of a set of initial alternatives, scale of normalized ordered differences.
MODEL HELICOPTER-TYPE AIRCRAFT LANDING CONTROL
ON AN UNPREPARED SNOW-COVERED AREA
V.G. Mashkov, V.А. Malyshev
The article is devoted to research in the field simulation helicopter-type aircraft landing. The analysis the standard means landing, installed on helicopter – type aircraft at the present time showed that in Arctic conditions they are not able to provide the crew with information about the underlying surface (landing site), in particular, the depth snow, the slope the earth’s surface under the snow cover, the presence obstacles. Simulation the process controlling the landing a helicopter – type aircraft on an unprepared site with a snow cover with the proposed radar landing system showed that the task can be successfully solved. To do this, the underlying surface (landing site) is probed and information is given to the crew about the possibility landing, or lack thereof, comparing the measured values with those specified for a particular type aircraft. The logical information model, reflecting the automation the management process fit with the purpose increasing the probability correct site selection as an indicator safety landing an aircraft the helicopter type, by radar determine the parameters and characteristics plane-environments, depth snow cover, obstructions and slope the earth’s surface the landing site. The use the model is possible in the development radar systems to ensure the safe landing a helicopter – type aircraft on an unprepared snow-covered area in conditions insufficient information about the underlying surface the cabin space.
Keywords: plane-medium, subsurface sensing, landing of the helicopter, a landing place, an unprepared area.
APPROACH TO ESTABLISHING A DECISION MAKING SYSTEM OF RESOURCES DISTRIBUTION FOR AUTO TRANSPORTATION COMPANY
S.Y. Egorov, H.S. Salih
One of the primary tasks of economics is to improve methods of the optimal distribution of company resources.The article proposes an approach to creating a decision-making system for managing the distribution of transport and technological vehicles of an auto transportation company across its construction sites. As an example, we consider a truck company that has an extensive fleet of freight vehicles and specialized vehicles for construction work.To implement control mechanisms based on the use of operational data from construction sites, a resources management model is proposed, which is characterized by the implementation of flexible feedback.We developed an algorithm for generating managing actions in a feedback-based control system that minimizes the costs of am auto transport company when solving a set of tasks for distributing the company’s transport resources to remote objects.The approach is based on coordinating the implementation of projects according to the network plans that were built, taking into account the vehicles’ technical condition. Coordination of solving the problems of production and technical operation of a transport vehicle fleet allows us to make informed decisions on the use of the vehicles and helps to increase the overall technical readiness of the fleet. That, in turn, leads to an increase in the efficiency of the entire company and provides a less costly solution to large governmental projects.
Keywords: resource distribution, system for support of decision-making, network planning, monitoring.
ALGORITHMIC PROVISION OF OPTIMIZATION OF PARAMETERS FOR
AUTOMATED CONTROL SYSTEM TECHNICAL OPERATION OF
AERONAUTICAL EQUIPMENT BASED ON THE APPLICATION OF INFORMATION TECHNOLOGIES
M.I. Yatsechko, S.V. Ippolitov, R.V. Repin, V.A. Malyshev
The main problem in the development of algorithmic support for an automated control system for the technical operation of aircraft is the stochastic process of the probability of transitions of aircraft from one state to another. The article discusses an approach to solving the problem of optimizing the parameters of automation of the process of technical operation of aircraft, by achieving the maximum value of the indicator of functional efficiency in the conditions of limited resources (personnel of the engineering and aviation service and ground handling facilities). The analysis of the development of an automated control system for the technical operation of aircraft and their current status is considered. Aircraft planning methods are considered, optimization models by various criteria are shown. The positive and negative aspects of planning based on the queuing system are reflected, as well as the analysis of existing decision-making systems in the planning of work on aircraft. It is noted that existing systems do not solve the problem of distributing specialists to aircraft when servicing a group of aircraft. The task of optimizing the control system in conditions of a limited number of personnel with a minimum training time for a group of aircraft. An algorithm is proposed that implements the procedure for prioritizing the performance of work by engineering and aviation service specialists in the process of preparing a group of aircraft. On the basis of information on the number of personnel, the training time, each specialist forms a priority (turn) for the performance of work by specialists on aircraft. This algorithm is implemented using the Delphi programming language, and calculations and their approximations were performed using MS Excel. The advantage of the above algorithm is the possibility of its application, subject to a limited number of personnel involved in the preparation of aircraft.
Keywords: algorithmic software, parameter optimization, automated control system, aviation technology, technical operation, technical condition.
OPTIMIZATION MODEL AND INTELLECTUAL SUPPORT ALGORITHM FOR MANAGEMENT THE RESOURCE MANAGEMENT DISTRIBUTION IN THE ORGANIZATIONAL SYSTEM
Y.E. Lvovich, B.A. Chernyshov, O.N. Choporov
The article discusses the sequence of actions for the formation of an optimization model and an algorithm for intellectual support of the process of rating management of the distribution of resource support in the organizational system. The structure of the rating management system is determined by a set of features that make it possible to establish a sequence of particular management tasks that form a single decision-making cycle.The optimization model forms extreme and boundary requirements when coordinating the interests of the system’s managing center and the administration of its facilities in the distribution of resource support, which is allocated to each area of activity, contributing to a change in performance indicators to improve the facility’s position in the rating. Combining formalized requirements leads to the block task of linear programming.The intellectual support algorithm is based on a game approach to solving the block problem of linear programming. To this end, a transition was made to the vector-matrix form for writing direct and dual linear programming problems and iteratively searching for the saddle point of the Langrazh function with preliminary separation of the coefficient matrix and the constraint vector into two parts.
Keywords: organizational system, rating management, optimization, intellectual support, linear block programming.
ALGORITHMIC MODEL OF A DISTRIBUTED CORPORATE NOTIFICATION SYSTEM IN CONTEXT OF A CORPORATE CYBER-PHYSICAL SYSTEM
UDC 004.75, 004.58
I.V. Vatamaniuk, R.N. Yakovlev
This paper discusses an architecture of a corporate notification system, ensuring information support for enterprise staff and belongs to the corporate cyber-physical system. The tasks of this system include: display of content on mobile devices and stationary displays; management of content data and its presentation; personalized content prioritization. The proposed corporate notification system provides digital content display and embraces the following components: the backend – main functional unit, being run on the corporate cyber-physical system application server, including, particularly, the software units for interoperation with data stores, as well software components, coupled with the software of the stationary screens. The interaction scenarios of stationary screens and corporate notification system server backend are considered to implement schedule management, events, as well management of content, uploaded into the system. Algorithmic model is proposed for dynamic composition and prioritization of user notifications, based on content classification groups, user access levels, relevant event lists and their relevance periods. The proposed corporate notification system employs usual networking technologies and has no dependencies with certain proprietary hardware and software platforms. It meets extensibility and portability criteria and can be integrated into existing corporate cyber-physical system as a new component.
Keywords: cyber-physical system, information system, service-oriented architecture, enterprise architecture, algorithmic model, notification prioritization, service personalization.
MODELING SCENARIOS OF OVERCOMING BARRIERS OF CONSUMERS TO DIGITALIZATION PROCESSES
Y.V. Danilchenko, N.V. Fedorova, E.G. Korepanova, M.L. Dmitrieva
Digitalization gives the Russian economy much opportunity to develop the production of goods and services, and significantly changes consumer behavior. In these conditions, purchasing behavior is also changing significantly. Despite all the variety of approaches to modeling consumer behavior, the customer’s path in the digital environment consists of 4 stages: awareness of the need, actions before buying (finding information), buying and actions after buying. It is noted that the interaction between the manufacturer and the consumer almost completely transfers from the real to the digital environment, and the real product, in consumer awareness, is increasingly transformed into a “digital service”, and the value for the consumer is increasingly shaped by complex conditions: ease of searching for goods on the Internet, payment security, speed of delivery of goods – all that forms the digital environment. This transformation has led to the emergence of digital technology (online) platforms. The main trend in the development of domestic digital platforms has become sectoral sanctions, the state has stimulated digital import substitution programs, which has allowed to fully form its information technologies in the public services segment and to develop digital super services programs that can seriously reduce consumer barriers and motivate consumers to receive services using digital technologies. At the same time, the development of digital technologies and platforms is accompanied by a simultaneous rejection by consumers of digitalization processes of various, often unclear etymologies, resistance to such processes associated with the risks of using platforms. The authors studied the opinion of residents of the city of Krasnoyarsk and the Krasnoyarsk Territory on the goals of using electronic services, and performed mathematical and statistical data processing. As a result, the main barriers were identified and scenarios of overcoming consumer resistance were modeled.
Keywords: digitalization, digital platforms, consumer behavior, consumer behavior model.
ABOUT OPTIMIZATION AND ALGORITHMIZATION OF CONTROL OF INTEGRITY OF INFORMATION OF THE UNIFIED MODEL OF THE AUTOMATED INFORMATION SYSTEM OF COMMERCIAL ENTERPRISES
I.A. Gubin, A.S. Dubrovin
This article discusses approaches to optimization and algorithmization of information integrity control (IIC) of a unified model of an automated information system of commercial enterprises (UMAIS CE), considered as a model of a protected automated information system for supporting commercial activities of enterprises with a generalized structure and set of equipment. These approaches include the development of new quality criteria for the IIC UMAIS CE, a new statement of the optimization problem of the IIC UMAIS CE, a new probabilistic method for automatically varying the amount of information controlled for invariance during the implementation of control procedures, a new algorithm for finding the optimal value for the controlled parameter of the IIC UMAIS CE. These approaches are necessary for the development of a mathematical model of the IIC UMAIS CE, which differs from the known ones by using a probabilistic method for automatically varying the amount of information controlled by invariance and setting, and solving the optimization problem to ensure maximum conditional profit of the commercial enterprise with sufficient control due to, inter alia, using the algorithm for finding the optimal value of the controlled parameter of the IIC UMAIS CE, which differs from the known by the new algorithm The behavior control checks using dynamic criteria IIC UMAIS CE.
Keywords: automated information system, algorithm for finding the optimal value, information integrity control, optimization task, conditional profit of a commercial enterprise, reference model of a secure automated system.
AGENT-BASED MODELING OF SOCIAL-POLITICAL SYSTEMS AND PROCESSES: HISTORY OF DEVELOPMENT AND FUTURES FOR PRACTICAL APPLICATION
UDC 32.019.5, 323.2, 324, 327, 329, 519.682
The article provides an overview of agent-based models that reproduce the structure of socio-political systems and dynamics of international processes and socio-political phenomena. The effectiveness and futures of the practical application of agent-based modeling in the field of political knowledge are scientifically proved. An analysis of the conceptual and construction features of agent-based models considered in the scientific review demonstrates the advantages of agent-based modeling for realization applied interdisciplinary projects and research tasks based on the synthesis of several disciplines within the framework of public and political knowledge: political sociology and political psychology, history and archeology, international relations and social culturology. The potentialities and advantages of agent-based modeling in the aspect of its applied meaning for hypothetical testing in the framework of political analysis are shown. A brief history of the practical application of agent-based modeling in the field of political knowledge is presented through a retrospective and structural analysis of models created by prominent political scientists, sociologists and economists, and the impact of their work on the further development of the scientific field is shown. Conclusions regarding the futures for the practical application of simulation in the field of political sciences related with the participation of supercomputer technologies to simulate large-scale socio-political systems, as well as international processes and scenarios that occur on a global scale are presented.
The article has been prepared with the support of the Russian Science Foundation (Grant № 19-18-00240)
Keywords: socio-political systems and processes, elections, political analysis, revolutions, international relations, agent-based modeling.