Mass Service System Research Articles

MODEL OF FUNCTIONING OF THE AUTOMOTIVE SUPPORT UNIT OF THE AUTOMOBILE FACTORY PARK

It is held the analysis of the state of functioning of the system of technical support of automobiles and armored vehicles factory parks. The basis of this system is the technical support units. These units provide quality and timely implementation of technical influences on machinery. So, the main task of information support of technical support is to determine the needs of vehicles parks in such influences and an assessment of the capabilities of the relevant technical support units. Thus, there is an urgent need to model the functioning of these units. These units can be internal or external, with which the Internal Subdivision is subordinate to the State Border Guard Service of Ukraine and the external unit is subordinate to another organization. All these types of units need to be analyzed. The end result of the functioning of this system is the implementation of such a managerial influence on its structure, which will provide maximum effect of the adaptation of the combined system of technical support of automobile and armored vehicles fleets of the units of the State Border Guard Service of Ukraine. Thus, successful resolution of the tasks of information support of technical support of automobile and armored vehicles fleets of the units of the State Border Guard Service of Ukraine requires formalization of the functioning of certain technical support units. The study simulates this process. The technical support unit is presented as a mass service system with an extraordinary inbound request flow and a limited service queue. As a result, a number of dependencies were obtained that allow forecasting of the possibilities of separate technical support departments of technical parks and use of the obtained values in the process of implementation of the information support of technical support of such parks. Keywords: technical support system, technical support unit, model, mass service system, efficiency.

���������� ������ �ֲ������� ����������� ²������ί ������� ��ֲ������ί ����IJ� ������� � ������� �����ί ���������

The tasks for the protection of nuclear installations, in accordance with the guiding documents, are assigned to the military units of the National Guard of Ukraine. The formation of certain parts is carried out taking into account the peculiarities of the service for the protection of nuclear installations, the possible sabotage of the terrorist groups and the assessment of the military units' capabilities for dealing with these diversions. For this purpose, in the article a comprehensive model is developed which allows using the chosen indicators and the criterion to assess the capabilities of the military unit for the protection of the nuclear installation in counteracting sabotage both inside and outside the object, which (sabotage) can be carried out by soldiers terrorist-sabotage group both personally and with the use of UAV. The use in the model of the unit for assessing the vulnerability of the physical protection system of the nuclear device of the mathematical device of incompletely available mass service systems allows to take into account the guard reserve group combat order the whole length of the blockade and the incomplete availability of the terrorists and subversion groups for the shelling of the military, which is not taken into account in known scientific works on definite research direction. In the model of the block for calculating the required number of personnel of the special-purpose unit, the dependence of the number of the special-purpose unit from the area of the territory in which the unit carries out tasks for the detection of terrorist-sabotage groups and their apprehension or destruction on the approaches to the object is deduced. The model of the unit for determining the required number of personnel of the military unit for the first time allows us to determine the coefficients of increasing the number of personnel to perform tasks for the protection of nuclear facilities, which (coefficients) can be used for the operational calculation of the number of personnel units. The developed comprehensive model can help the National Guard Headquarters of Ukraine and the command of the military units to make substantiated decisions on the organization of nuclear facilities and to determine the required number of these units

Adapting urban areas for people with limited mobility

In article the ways of adaptation of elements of improvement, and also replacement of monolithic and stationary parts of the equipment on flexible, transformed designs were analyzed. The main prerequisites for a qualitative change in the urban environment are the actual needs of the population: unhindered access to the objects of the mass service system (hereinafter MSS), safe movement on transport and pedestrian routes from residential areas to gravity focuses, the possibility of orientation, barrier-free communication and communication with dispatching service organizations in emergency situations through multimedia resources [7]. The main methods of research in the current article are full-scale surveys, interviewing the target audience with a preliminary sample. The article considers a set of solutions for the adaptation of the territory to the needs of PWLM by means of transformable structures [17]. Standardization of structures and equipment will allow to achieve better quality, more ergonomic solutions in the equipment of objects of different categories and purposes, unification of prefabricated elements-their serial production with the state control of products. Such organization of improvement will allow to achieve sustainable development of urban areas for the project period, will create a basis for future generations.

Удосконалення моделі прийняття рішення на виконання завдань з вогневого ураження противника

Стаття присвячена використанню підходів теорії масового обслуговування для удосконалення моделі прийняття рішення на виконання завдань з вогневого ураження противника (ВУП) за рахунок уточнення параметрів системи масового обслуговування (СМО), зокрема урахування обмеженого часу очікування заявки в черзі, що дозволить врахувати динаміку отримання розвідувальних відомостей, тип організаційного об’єднання органів управління, а також надати відповідні рекомендації щодо підвищення рівня імовірності реалізації інформації про об’єкт ураження під час ВУП.

Analysis and evaluation of the functionality of the mass service system on the basis of customs of truck vehicles

Paper discussed the modeling of customs processes for truck vehicles using the Markov processes and mass service theory (queue theory), showing the operation of the notification handling system as a system dependent on random events. The system is characterized as a system with Poisson input stream, exponential service time and many service stations. The results are presented in the form of graphs based on real data received from the customs office

STRUCTURAL ADAPTATION MECHANISMS OF THE STEVEDOR ACTIVITY MANAGEMENT SYSTEM

Topicality. In the context of economic and organizational transformations, the fulfilment of the stevedoring activity by national maritime terminals was considerably more complicated and proved to be prone to the impact of unpredictable market phenomena, faced with the need to maintain a competitive level and the ability to manage these processes in the new environment. Such variability of the market environment in the provision of stevedoring services requires appropriate methods for managing marine terminals, the application of approaches based on the principles of adaptability, flexibility of both management decisions and the organizational structure of the management system of stevedoring activities.Aim and tasks. The existing situation in this area of activity was analysed, the conclusion was reached on the existence of an acute need of methodological support formation for the introduction of the newest forms of management in the national sphere of stevedoring services’ provision, which was the purpose of this article.Research results. In the article, the adaptation mechanisms of the regulation system of stevedoring activity at sea port terminals have been formulated and proposed for use in the practice, and a list of conditions for application of the principle of stevedoring management adaptability has been formed. During the study, attention is focused on the analysis of the concept of adaptability and the application of this approach to the management of terminals. Taking into account the fact that the modern sea terminals on which the stevedoring activity takes place, it should be attributed to complex stochastic, dynamic and open systems that at different times can be in different states, it is proposed to represent them as a structurally complex mass service system. An approach to the optimization of adaptive management, based on methods of mass service theory, which also allows one of the main risks in the operator's activity to be assessed, namely, the risk of its destruction as a result of drop in expected turnover of goods has been proposed in the article.Conclusions. The mechanism of finding a management decision for obtaining the desired level of competitiveness by stevedoring companies per distributing cargo flows between competing port operators at terminals located at different ports, and based on the determined profit of each operator of the port terminal received during the planned period.Since the quality of the port terminal operator depends essentially on the choice of the management type of its organizational management structure, which is a complex scientific problem, the decision of this problem has been offered in the article by using the research of operations methods and economic-mathematical modelling.

OPTIMAL TRAFFIC MANAGEMENT FOR AIRCRAFT APPROACHING THE AERODROME LANDING AREA

The research proposes a mathematical optimization approach of arriving aircraft traffic at the aerodrome zone. The airfield having two parallel runways, capable of operating independently of each other, is modeled. The incoming traffic of aircraft is described by a Poisson flow of random events. The arriving aircraft are distributed by the air traffic controller between two runways. There is one approach flight path for each runway. Both approach paths have a common starting point. Each approach path has a different length. The approach trajectories do not overlap. For each of the two approach procedures, the air traffic controller sets the average speed of the aircraft. The given model of airfield and airfield zone is considered as the two-channel system of mass service with refusals in service. Each of the two servicing units includes an approach trajectory, a glide path and a runway. The servicing unit can be in one of two states – free and busy. The probabilities of the states of the servicing units are described by the Kolmogorov system of differential equations. The number of refusals in service on the simulated time interval is used as criterion for assessment of mass service system quality of functioning. This quality of functioning criterion is described by an integral functional. The functions describing the distribution of aircraft flows between the runways, as well as the functions describing the average speed of the aircraft, are control parameters. The optimization problem consists in finding such values of the control parameters for which the value of the criterion functional is minimal. To solve the formulated optimization problem, the L.S. Pontryagin maximum principle is applied. The form of the Hamiltonian function and the conjugate system of differential equations is given. The structure of optimal control has been studied for two different cases of restrictions on the control of the distribution of incoming aircraft traffic. The regularities of the control parameters influence on the value of the functional criterion are revealed.

Zarządzanie ryzykiem awarii sieci wodociągowej z wykorzystaniem systemu masowej obsługi

The aim of this paper is to analyse the functioning of the repair brigades in the process of failure removal in the water distribution subsystem using the mass service system (MSS). An example is presented using queuing model which takes into account notifications with various scheduling algorithms of failures occurring to the system. The functioning analysis of mass service system can be used in the optimization of the repair teams’ actions and in the management of water supply companies.

Investigation of the operation mode at Ruse-Danube Bridge border checkpoint considered to be a mass service system with incoming flow of automobiles at a non-stationary mode of operation

The present work reviews the Ruse-Danube Bridge border checkpoint and the work carried out for a year, by examining the average daily incoming flows of cargo vehicles. On the basis of the information collected, the daily irregularity of the work at the Ruse-Danube Bridge border checkpoint has been assessed and the system has been modelled as a mass service system to assess capacities in existing infrastructure and organization of work. The type of incoming flow has been specified as a non-stationary Poisson flow. Under non-stationary conditions, the basic values of the system parameters have been calculated and a MatLab application has been created. A system of differential-algebraic equations has been selected for a model according to Kolmogorov model for stochastic processes.

О ЗАКОНОМЕРНОСТЯХ В СИСТЕМАХ МАССОВОГО ОБСЛУЖИВАНИЯ С "НЕТЕРПЕЛИВЫМИ" ЗАЯВКАМИ

О ЗАКОНОМЕРНОСТЯХ В СИСТЕМАХ МАССОВОГО ОБСЛУЖИВАНИЯ С "НЕТЕРПЕЛИВЫМИ" ЗАЯВКАМИ

Elements marking of partially masked group objects using local descriptions of an associated continuous image

Questions of recognizing images of multiple objects whose dimensions are close to the resolution limit of recording equipment - groups of point objects (GPO) - are investigated. Images in the form of GPOs are found in radar images, whereas images of large-scale objects represented by characteristic points, clusters of data in a feature space, and events in mass service systems and automated control systems can be reduced to them. GPO recognition is complicated by disconnectedness of constituent elements, the narrowness of the image autocorrelation function in terms of the geometric transform parameters, spatial fluctuations of elements, false markings and omissions of signal markings. The most promising approaches to the image recognition of this type are based on the transformation of the GPO into a connected object - an associated continuous image (ACI) - and the analysis of its secondary features. However, for GPO with a non-stationary configuration and / or partially masked GPO, the recognition issues are still poorly investigated. The paper proposes an approach to the recognition of GPO based on the marking of their elements - the identification of point objects to within a metaclass (family, type) that is stable for nonstationary and partially masked GPOs. Four metaclasses are proposed: the extreme and inner points of the GPO with a chain structure, the outer and inner points of clusters. The essence of the approach to marking point marks is the recognition of complex-valued contour codes composed of samples of the cylindrical sections of an associated continuous image (ASI) around the GPO elements. To form the ASI, a vector field with partial sources in the elements of the GPO is used. Evaluations of the reliability of marking under various observation conditions are obtained. The results of marking are both of independent significance for various applied problems and suited for the subsequent recognition of GPO. Approaches to GPO recognition based on the results of marking of their elements are suggested.

О ПРИБЛИЖЕНИИ ПОТОКА СОБЫТИЙ К ПУАССОНОВСКОМУ

When modeling an extensive class of technical systems, the mathematical apparatus of queuing systems (QMS) is widely used. An example of such a system is the computer network, where computer applications are generated and executed. Applications are generated usually not regularly, but by accident, forming the so-called random order of applications (requirements). Service requests, it also continues some random time. One of the central issues in the organization of mass-service systems is the elucidation of the regularities that subordinate the moments when system requirements for service are submitted. The article explores the flow of events in technical systems of various purposes. On the basis of the fact that under the Poisson character of the flow mathematical modeling of the systems is greatly simplified, the problem of obtaining a simple criterion for determining the degree of approximation of the flow of events to a Poisson one is posed. Pearson’s criterion, regression, correlation and parametric criteria were investigated. A criterion based on the calculation of the waiting function was obtained again. On the example of the study of the system with "competitions"it is shown that the flow of events generated by the system tends to Poisson with an infinite increase in the number of "competing"subjects.

The Effective Optimization Methods of Port Activity on the Basis of Algorithmic Model

The article considers the inland waterways (IW) within the international transport corridors as multiphase systems of mass service (SMS) and shows the distinction in calculation of the important indicator of system efficiency - the average total waiting time of vessel service in the serving subsystems, the application of genetic algorithms to increase the efficiency of reloading processes.

DEVELOPMENT OF A SYSTEM FOR TRANSPORTATION OF GOODS BY ROAD ON THE BASIS OF THE PRINCIPLES OF LOGISTICS

The purpose of the article is to develop theoretical and methodological foundations in the framework of the scientific support of the processes of the further development of logistics system of cargo delivery by motor transport. Methods. In the study of this topic used the system approach, methods of synthesis and rational problem solving, theory of mass service. The Results. In the work of the road considered as part of the system of transportation of cargoes that will allow to increase its economic efficiency in an ever-changing environment of transportation and logistics space according to the chosen criterion, the lower total costs to promote material flow. Scientific novelty. The road is represented by a link in an integral process of creating and managing material flows. We propose the formation of the elements of the traffic and transport components of subsystems with their further unification of the unified system of transportation of goods by road. The relationship of the elements of the system are formalized in the form of dispersed two-phase system of mass service. Each element of the system is evaluated with its own characteristics. The practical significance of research consists in possibility of their use by employees of motor transport enterprises, service enterprises, responsible for procurement of production and transportation of products, travel agencies to make science-based decisions on rational organization of transport of goods and the formation of the program of road works.

DEVELOPMENT OF CARGO TRANSPORTATION SYSTEM BY ROAD ON THE BASIS OF LOGISTICS PRINCIPLES

Рurpose. The article is aimed to develop and adapt the theoretical and methodological foundations for improving logistics system of cargo delivery by road transport in the framework of the scientific support of formation processes of transport-logistical system of the country. Methodology. The theory of system functioning control requires formalization of connections within the system. The qualitative and quantitative characteristics of entity were performed and the regularities of elements interaction in the system of road goods transportation were found out. The role of the road in transport industry and the influence of transportation and logistics space on the road itself in the process of its functioning were clarified. In the study of this topic the system approach, methods of synthesis and rational problem solving, theory of mass service were used. Findings. The work presents the highway as an element of the cargo transportation system that will make it possible to increase its economic efficiency in a constantly changing environment of transportation and logistics space according to the chosen criterion, the lower total costs to promote material flow. Theoretical-methodological bases of perfection of logistics system of cargo delivery by road transport include substantiation for the use of logistics as an effective control element to reduce the costs associated with goods transportation. They are distinguished by the presence of evidence-based methods for calculating the timing and sequence of execution of road works, logistic integration involved in the carriage of goods of the enterprises, structure and volume of material and accompanying flows and the formation of the logistics chain of its promotion. Originality. The road is represented by the link of single integral process of creation and management of the material flows. We propose formation of sub-system of the elements of road and transportation components with their further unification by a single road transportation system. Inter-connected elements of the system are formalized in the form of dispersed two-phase system of mass service. Each element of the system is evaluated by its own characteristics. Practical value. The practical significance of research consists in possibility of their use by employees of motor transport enterprises, service enterprises, responsible for procurement of production and transportation of products, travel agencies to make science-based decisions in forming the program of road works and to provide alternative opportunities for the rational organization of cargo transportation.

Automated large capacity multi-story garage—Concept and modeling of client service processes

Abstract The paper analyzes the service process of proposed multi-automated garage with a capacity of approximately 1000 parking spaces. By using specific construction techniques this solution is competitive to other solutions implemented in many places of the world. The paper also contains a short review of existing solutions and shows the additional value provided from the proposed garage concept. Queuing theory was used to describe the service process (transport of vehicles) from the points of input into to output from the garage. In this case, the automatic garage was treated as a complex system of mass service (queuing system). The general advantage of the proposed solution is the possibility of parallel service of 10 vehicles by using only one lift (resulting in savings of place and time). At the end of the paper, proposals for further work are also described.

Дослідження моделі гібридної радіо-оптичної телекомунікаційної системи

The principle of the transmission of a digital signal through the atmosphere by means of radiation modulation in the unlicensed range of wave lengths (infrared or visible) and its subsequent detection by optical photoreceiving device lies in the basis of FSO technology. The main advantages are: high speed of transmission, the simplicity of installation as well as the absence of the necessity to pay for the utilization of a frequency range. At present the technology ensures the transmission of digital bitstreams up to 10 Gbit/sec that allows solving the problems of the “last mile” under the high immunity of a communication equipment channel, developing municipal networks transmitting data and voice, developing WDM (wave multiplexing) for SDH networks. Modern condition of FSO technology allows creating reliable channels of communication at the distances from 100 to 1500-2000 metresin the conditions of atmosphere. Main characteristics, main advantages and the existing restrictions on the utilization of the technology have been considered in the work. The description of the concept of a hybrid channel as a combination of optical and radio channels with the purpose of using the advantages of each of them as well as mathematical model of a hybrid system as a unilinear system of mass service with two possible service rates and limited time of their utilization is given.

Модель выбора оптимальных условий хранения межоперационных заделов

In article the complex mechanized production line in the form of N-channel system of mass service with a limited waiting time is considered. From features of production, among other, storage conditions of semi-finished products and restriction on a storage time before some operations of the complex mecha-nized line are accepted. As the scheme of local search it is possible to choose the scheme similar to search of an extremum of functions of many variables as Gauss-Sejdel´s method.

Application of ANFIS for the Estimation of Queuing in a Postal Network Unit: A Case Study

Regardless the level of technological development in a community, the unavoidable phenomenon is the appearance of queuing. This situation will continue as long as there is the customer's need for the direct contact with the service suppliers, as the case is in the Post of Serbia. The aim of the paper is to estimate the time a customer will spend in queuing while approaching the counter for financial services in a postal network unit. The observed system comprises a single queue, three handling channels and the service according to the FIFO principle. This paper presents a developed model that is realized in the following phases: recording data, preparing data for training, training the neuro-fuzzy system, forming a data set for testing where the expected mean service speed is obtained using the moving average method, and testing the neuro-fuzzy model. Observing the mass service system has so far been directed towards, the evaluation of their behaviour in the past which presents a basis to evaluate whether the system provides satisfactory performances. This paper moves a step in the direction of the behaviour evaluation of a mass service system, in the future, in order to observe whether it is possible to predict the service quality level to be provided to a customer. System customer in this case is not limited by the number of demanded services.

TRAFFIC FRACTAL ANALYSIS AND THE DETERMINE THE PROBABILITY CALL BLOCKING IN CELLULAR MOBILE NETWORKS

The purpose of this article is analysis of fractal properties of traffic and its influence on the characteristics of telecommunication systems for a given quality of service (QoS) as invariant to scale throbbing traffic structure can significantly influence the network performance. Analysis of the causes and consequences of fractal in traffic, and to identify areas handover is an important task in the modeling of radio coverage in the environment base stations Radio Mobile [1]. The numerical analysis model is incomplete two streams available system of mass service (SMS) with expectations calling for the handover and determine the probability of each new call blocking, call handover-and-multiple-call handover in a mobile network cell.