OPTIMAL PLANNING OF THE CARGO TRANSPORTATION PROCESS
T. E. Smolentseva, A.V. Svishchev
The purpose of this work is to identify the factors that ensure optimal planning of the cargo transportation process with the subsequent formation of the logistics structure of this process. To solve this problem, the main factors that will ensure technical equipment, the use of various types of transport and the determination of transport capacity, accounting for production processes are identified. Based on the theory of Queuing, an algorithm for forming the structure of the process of organizing optimal planning of cargo delivery, with determining the value of throughput, as well as the costs of this process, is developed, which allows in the event of a time delay to make an effective management decision to ensure this process. In the process of analyzing cargo transportation planning, the decision-maker must take into account: the time spent on completing all the processes at the stage of preparatory work, followed by the implementation of steps aimed at equipping the points of acceptance and departure of goods. The structure of the process of organizing optimal planning of cargo delivery considered in this paper allows us to determine the main factors involved in the formation of a cargo transportation plan.
Keywords: cargo transportation, optimal planning, schedule of vehicles, throughput, cargo transportation volumes, supply chain management system.
MODELING OF CONTROL PROCESS OF INDUSTRIAL ORGANIZATIONS BASED ON RATING APPROACH
I.Y. Lvovich, Y.E. Lvovich, A.P. Preobrazhenskiy, Y.P. Preobrazhenskiy,
The paper discusses the possibilities of modeling the control of industrial organizations based on rating approaches. There is a control center for control production facilities. It is proposed to organize the interaction of the control center with the facilities based on the rating score and then proceed to the rating control process. At the same time, the rating is used to analyze control, accounting, forecasting and regulation of the activities of the objects included in it in the analyzed production system. A model for the interaction of the control center in industrial production with the objects of the production system based on the classification criteria is formed. The structure of the interaction of the control center with the objects of the production system at rating control is given. Rating control mechanisms based on: control the distribution of resource support for the implementation of all areas of the main activity of the production system, control the coordination of interests of the control center and objects of the production system, and control the distribution of additional resource support for development, are considered. The block diagram of the implementation of mechanisms for rating control is given. The characteristics of modeling the interaction of the control center and objects of industrial systems are indicated. The results of rating assessment of industrial production objects are given on the example of growth in sales of enterprise products.
Keywords: production organization, model, rating approach, resource, management, control.
MODEL HELICOPTER-TYPE AIRCRAFT LANDING CONTROL ON A WATER BODY WITH SNOW-ICE COVER
V.G. Mashkov, V.А. Malyshev
This article deals with the problem landing a helicopter-type aircraft on an unprepared site, in particular, a model landing control on a body water with snow and ice cover is proposed. The analysis the standard means landing, installed on helicopter – type aircraft, has now shown that in Arctic conditions they are not able to provide the crew with information about the underlying surface (landing site) such as the depth snow and the thickness the ice cover. Simulation the process landing control helicopter aircraft on an unprepared site on a body water with snow and ice 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 paper presents a logical information model that reflects the automation the landing control process by assessing the possibility a safe landing, by radar determination the parameters and characteristics flat-layered media, snow depth and ice thickness. The use the model is possible in the development radar systems to ensure the safe landing a helicopter – type aircraft on an unprepared site with snow or snow-ice cover in conditions insufficient information about the underlying surface.
Keywords: snow and ice cover, subsurface sensing, helicopter landing, landing site, unprepared site.
DETERMINATION OF THE CRITICAL MASS OF THE CORE OF AN OIL-PRODUCING CLUSTER USING GRAPH THEORY
despite the fact that the cluster approach is quite common in scientific research, the issues of formation, development and evaluation of the effectiveness of cluster-network interactions remain unresolved. The relevance of the research is because with the optimal mechanism of the cluster-network approach, it is possible to maximize the profit of participants in cluster-network relations, thereby increasing tax revenues to the budget, ensuring the growth of GRP in the region. In this regard, this paper considers one of the elements of cluster-network approaches as a tool for managing regional development of regions focused on the extractive industry. This approach allows us to develop and implement effective tools to stimulate the development of the socio-economic system of the region and organizations. Management refers to the variability of structural shifts in the sector economy by redistributing key sub-sectors. This paper uses graph theory to determine the critical mass of the cluster core. The paper focuses on the cluster core and its critical mass as one of the indicators of the cluster policy mechanism. Under critical mass, we will understand the development of cluster-network connections of cluster participants. The hypothesis about the influence of critical mass core to the ability and desirability to developments in the mining sector in such a way that changes the final graph elements that are set in accordance with podotraslej, leads to substantial changes in the industry. The materials of the article are of practical value for participants in cluster-network interactions of oil and gas sector entities, who can maximize the volume of production of goods and services, increase profitability and business profitability indicators by optimizing the cluster-network mechanism
Keywords: cluster-network connections, oil industry, cluster core, graph theory, optimal path.
DEVELOPMENT OF A SOFTWARE COMPLEX FOR OPTIMIZATION OF SYNTHESIS PARAMETERS OF METAL NANOPOWDER
I.V. Chepkasov, I.S. Zamulin, V.S. Baidyshev
In this work, we carried out molecular dynamics modeling in the LAMMPS software package for obtaining metal nanoparticles (Cu, Au, Ni, Al) from the gas phase at various synthesis parameters, with a detailed study of the effect of temperature and cooling rate on the shape, size and morphology of nanoparticles. Based on the data obtained, an algorithm was developed, on the basis of which a software package was created to optimize the parameters of the synthesis of metal nanoparticles. To implement the algorithm, the C ++ programming language was chosen as the main one. The effective physical quantities, model parameters, fitting coefficients obtained in the course of molecular dynamics simulations are not included in the source code of the programs, but are implemented in the form of plug-in databases, which can later be supplemented with new sets of metals and their alloys or refined for those already presented. With the help of this software package, it will be possible to determine the required conditions for the synthesis plant (temperature regime, cooling time, composition and concentration of metal vapors) to obtain nanoparticles with specified parameters (type of particles, their size distribution, ratio of components in a particle).
Keywords: algorithm, software, computer simulation, condensation, molecular dynamics.
INVESTIGATION OF THE DISPOSE-PATTERN ALGORITHM IN MAKING MEMORY MANAGEMENT DECISIONS IN THE .NET CLIENT-COMPONENT MODEL
UDC 519.6; 004.02
The paper presents a study of the Dispose-pattern algorithm, which is used in decision theory in problems of memory management of applications in .NET. In long running applications with excessive memory usage, there are prerequisites for the frequent launch of the garbage collector, which works with managed resources. Unmanaged resources without explicit cleanup can cause memory problems when the associated managed resources are disposed of. A block diagram of the cleaning method was compiled, an algorithm for using the Dispose-pattern in the client-component model was obtained. Quantitative values of various characteristics of the garbage collector are obtained, such as the amount of physical memory, the amount of processor time, the maximum pause of the process, etc. The data is collected on the basis of an application consisting of a component and a client written in C #, running in the Visual Studio environment. The component in question is compatible with the .NET Framework and is not a Component Object Model. The results of the application are compared with and without running the finalizer. The results obtained will help the decision-maker in choosing a criterion for assessing various methods of memory management, in the formation of a single-criterion or multi-criteria optimization model when making a decision.
Keywords: memory management method algorithm, decision making, Dispose-pattern, finalizer, client-component model.
AUTOMATED PROCESS CONTROL SYSTEM FOR OBTAINING ELEMENTAL SULFUR BASED ON RISK ASSESSMENT
D.V. Pechenkin, B.S. Dmitrievsky, I.A. Shcherbatov
We consider this type of management objects, the functioning of which occurs under various types of uncertainty and requires the development of a specific approach to management, analysis and evaluation of a variety of factors that affect the work and are not amenable to quantitative and qualitative description. In this paper, the task of controlling the technological process of obtaining sulfur is formulated. The analysis of the technological installation for obtaining elemental sulfur by the Claus method as a control object is carried out. Risk factors for the process under consideration are highlighted. A model for identifying the current state of the control object is proposed. The algorithm of management intellectualization, which acts as a base for the developed expert subsystem, is synthesized. The structure and order of functional interaction of the expert subsystem of the automated process control system with the decision-maker is given. The author developed an algorithmic support for the expert subsystem of the automated control system for the technological process of sulfur production, designed for integration into the operating environment of the operator’s automated workplace. The efficiency of the synthesized expert subsystem is evaluated by using a training simulator that simulates the operation of the control panel of the process unit for obtaining elemental sulfur using the Claus method. Based on the results of modeling 35 emergencies, 100% were identified by the expert subsystem, of which 28% were prevented at an early stage by implementing the generated recommendations.
Keywords:automation, sulfur production, Claus method, technological process, emergency, fuzzy logic, Mamdani, risk factor, expert subsystem.
SELECTION OF ERGATIC SYSTEMS ELEMENTS FUNCTIONS TO ENSURE THEIR FUNCTIONING UNDER CONDITIONS OF DESTRUCTIVE INFLUENCE
UDC 004.5, 519.17
V.V. Menshikh, G.I. Zverev
Ergatic systems have found application in areas of science and technology where the intervention of a human operator in the work is a prerequisite for ensuring their successful functioning. For the effective operation of the systems and the ability to quickly solve emerging emergencies in the current conditions, it is necessary to choose the optimal set of alternative functions of the multifunctional system elements. The urgency of this problem lies in the fact that a special place among the ergatic systems is occupied by the systems of command and control of the power departments, which are precisely characterized by the presence of multifunctional elements in their structure. It is proposed to use weighted hypergraphs as structural-parametric models of these systems. Due to various destructive effects on the system, the problem arises of choosing the optimal set of functions of the elements of the system. To solve this problem, an optimization selection algorithm based on the use of the branch and bound scheme was developed, and a numerical example is given to illustrate the operation of the presented method. Further development of the ideas presented in this article will be the development of methods for assessing the survivability of ergatic systems of the considered type with various types of destructive effects on them.
Keywords:ergatic systems, weighted hypergraphs, branch and bound, multifunctional system elements.
ACMEOLOGICAL ANALYSIS OF EXPERT PROCEDURE ERRORS USING THE METHOD OF ASSESSING THE DEGREE OF CONFIDENCE IN AN EXPERT
Expert assessment in modern conditions plays an increasingly important role. There are problems when accurate calculations are not applicable to assess, select and justify decisions. In such cases, expert methods are used. The proposed method for assessing the degree of trust in an expert takes into account the reputation of the expert as a long-term indicator of the quality of his examination, and the value of feedback as a short-term indicator of the state of the expert. Together, these 2 indicators make it possible to calculate the expert confidence coefficient. Using the described method, an expert procedure is carried out. However, errors in conducting expert procedures cast doubt on the accuracy of the results of the examination. Therefore, the analysis of such errors is a necessary step to test the feasibility of practical application of the proposed new solutions and methods in the framework of expert procedures. The article carried out an acmeological analysis of the errors of the expert procedure using the method of assessing the degree of confidence in the expert.Methodological, technological, technical, psychological, organizational, regulatory and other types of errors in the performance of expert assessments are considered. The article provides examples of identifying various kinds of errors in the described expert procedure. A reasonable explanation is given of the options for eliminating most common errors.
Keywords:acmeological analysis, expert procedure, expert assessment, trust in an expert, reputation, reputation system.
THE SOFTWARE PACKAGE FOR SIMULATION OF COMPLEX STRUCTURED RECONFIGURABLE OBJECTS BASED ON MODELS OF TYPICAL MANUFACTURING SYSTEMS
D.P. Lashchenov, V.L. Burkovsky
Currently, special-purpose communications networks are widely used in government bodies, bodies that carry out the functions of the country’s defense, state security and law enforcement. In connection with the features of the functioning of infocommunication systems and communication networks for special purposes, it must be borne in mind that they are deployed and provide management and interaction within the existing departmental and interdepartmental communication systems. The article proposes a model for the formation of a set of means to counter threats to information security in communication networks for special purposes. A description of such complexes is given, situations and grounds for their application are considered. Attention is drawn to the identification of common technological features of the formation of a set of means to counter threats to information security in communication networks for special purposes. To formulate requirements for complexes of means of counteracting threats to information security in communication networks for special purposes, a rule base has been compiled on the basis of which certain countermeasures will be selected. The authors modeled the functioning of a complex of countermeasures using the apparatus of linguistic variables and fuzzy expert systems. Based on the results obtained, requirements can be proposed for creating a set of means to counter threats to information security in special communication networks. The mathematical apparatus used in this article, based on the use of linguistic variables and fuzzy expert systems, can fully characterize the dependence of the effectiveness of countermeasures on the totality of implemented protective measures.
Keywords:simulation, reconfigurable manufacturing system, complex structured object, software package, optimization, queuing system, AnyLogic, decision support system.