Software & Systems

Articles of journal № 2 at 2014 year.

Order result by: Public date | Title | Authors |

1. Creating a multi-model system to make optimal management decisions in the company [№2 за 2014 год]
Authors: Belyaevа M.A., Burlyaeva O.K., Syrova I.V.
Visitors: 12327
The article shows results of the developed system of decision-making support in meat packing industry. The base is models that developed using imitating systems Anylogic, Simplex3, BPwin 7.1 and Aris 7 source environments; sys-tem of structural and parametrical modeling. The computer multimodel system solves the problems of of technical supply evaluation, economic status assessment of meat packing enterprises, revenue forecasting and planning, expenses and losses, calculation of the number of employees at and payroll, evaluation and the enterprise structure planning, identification of priority directions of development of meat packing industry, planning the funds for construction, repair and maintenance of i nfrastructure, allocation of the major risk factors and emergencies forecast, the calculation of the volume of sales for finished products. The system helps to specify a marketing situation, pricing policy and determine the trade off prices, suitable for producers and consumers, determine the demand for meat products according to its range. These problems can be solved using modern methodologies, software and systems, creating company models (both the static and dynamic), the data multivariate analysis, their "export" and "import" from one software product to another, integrating the repository and enterprise information system into one. Computer multimodel decision-making support system gives the possibility to improve the process of meat production and helps managers, entrepreneurs in the meat business.

2. Type checking system for functional programming language FPTL [№2 за 2014 год]
Authors: Bocharov I.A., Kutepov V.P., Shamal P.N.
Visitors: 9403
The paper describes static type checking methods and algorithm for functional parallel programming language FPTL. FPTL is implemented on multicore systems and is widely used. FPTL is a pure functional la nguage based on function compositions. By function composition we understand the application of four composition operations and recursive defin i-tions. Three of composition operations are parallel. It made possible to implement rather effective algorithms o f parallel pro-gram execution on multicore systems, using program interpretation. This is the key difference between FPTL and other fun c-tional languages, based on lambda-notation (such as Haskell, ML, etc.). Language type system consists of built -in types (int, real, bool, etc.) and user-defined abstract types. Functions in FPTL language are in general polymorphic. In theoretical se c-tion of this paper rules of correct typing and algorithm of type checking based on these rules are described. In the current lan-guage implementation on multicore system correctness of typing is checked while program is being executed. Type checking takes about 30 % of program execution time. Type checking system presented in the paper helps to significantly reduce time of program execution.

3. Automated control system for science-based mechanical engineering product development [№2 за 2014 год]
Authors: Burdo G.B., Stoyanova O.V.
Visitors: 12728
Nowadays Russian and world markets determine the demand for science-intensive high-tech products in vari-ous fields of mechanical engineering. The reduction of terms in design and production of prototype science -based products (SP) is in focus considering high competition level. The design and production of first innovative samples is a specific task for a number of reasons. This distinguishes it from the tasks and problems facing the serial production and re -engineering (modernization, modification). Due to this task specifics the existing decision support tools can not be effective enough for creating a SP. Therefore, the development of the automated control system of preproduction engineering, manufacture and testing of science-based products (ACS PE&T) is an actual task. New principles of developing the ACS PE&T are set forth. They allow (a) the decision-making processes to be adequate to real production processes, (b) the informational integration into the control hierarchy, (c) the ACS PE&T to be incorp o-rated into the automated support system for a product life cycle, (d) the decision -making procedures to comply with human reasoning as well as experts’ operational algorithm, (e) a manufacturer to reduce the total time (cycle) for a SP sample man u-facturing. A set-theoretic model of the ACS PE&T is developed in terms of the structure and procedure functi ons educed in the process of creating a SP. A set-theoretic model is proved to comply with the established ACS principles. The processes controlled with ACS are performed at the following stages of SP developing: research, development and engineering; designing and preproduction engineering; manufacturing planning; manufacture; quality control and testing. The information conversions within the automated control system are found out and described. A set-theoretic model and a temporal structure model is t he basis for development of methods and algorithms of decision-making in the automated control system.

4. Human behavior simulation based on the subjective view of choice situation [№2 за 2014 год]
Author: Vinogradov G.P.
Visitors: 10241
The article considers a model of decision making based on subjective views on choice situation. The views are the result of cognitive activity. They ar e described in the form of a mental image as the result of perception. They are repr e-sented as a model of knowable and analyzed objects, processes, phenomena and are consciously accessible. Agent’s attitude to the observed and analyzed data is formed accor ding to the generated model and based on attitudes, rules, past experience, knowledge fixed in the consciousness. Then, depending on this relationship, a subject forms his behavior. He also develops his own program of actions in the events, phenomena that he considers important. A normative (rational) or behavioral deci-sion-making model is used to describe a decision-making process. Recent research of the decisions making theory has shifted from selection processes description (using normative models) to actual procedures of decision-making. These procedures use formalization of methods and approaches developed within cognitive psychology and information processing theory. The shift of the research emphasis is related to examination of the discrepancy reason s between actual and optimal choice. It is important to form the corresponding reflexive control. The proposed approach is based on agent’s choice simulation metho d-ology. This methodology is developed by extending classical decision-making models using formalisms concepts of psychol-ogy and sociology. The methodology involves description criteria for used terms and corresponding measures. The apparatus of fuzzy and rough sets is used to create these measures. Introduced measures can be assessed by observing the agent’s be-havior. The author introduces the definitions for functional properties that characterize the choice and behavior of the agen t. He also forms a selection model using subjective views on the choice situation.

5. A complex of problem-oriented programs for analysis of micro photo images of nanocomposites texture FRA_VA_T [№2 за 2014 год]
Authors: Galaev A.B., Butusov O.B., Meshalkin V.P
Visitors: 12178
A complex of problem-oriented programs for analysis of micro photo images (MPI) of nanocomposites texture "FRA_VA_T" is developed. It is based on the principles of modular and object -oriented programming using Matlab language and Image Processing Toolbox library functions. The software complex is designed according to the original morphological, fractal -wavelet and cluster-morphometric methods and algorithms of MPI analysis previously proposed by the authors. The "FRA_VA_T" complex consists of three main programs: P1is a primary brightness analysis program; P2 is a fractal dimension calculating program, P3 is a cluster-morphometric analysis program for mikrographs of nanocomposites sections and one auxiliary VP-1 program to calculatу the dependency of textural parameters from the input data. Data support of the "FRA_VA_T" complex is a database. It is implemented using MYSQL database and includes r e-loadable with each new research mikrographs input data. This input data contains the original MPI and corresponding numer-ical characteristics, as well as the output data representing the main results of the complex: special generated images and t heir corresponding calculated values of texture parameters of MPI.

6. Improving data conversion efficiency in mobile robot design [№2 за 2014 год]
Authors: Golub S.V., Nemchenko V.V.
Visitors: 8027
The article describes the system structure technology for data conversion when controlling mobile robot. There are many approaches to data processing organization. They are based on artificial neural networks, fuzzy logic, genetic algo-rithms, inductive algorithms, as well as a combination of different methods. Their main feature is a unique design for specif ic conditions of use. An alternative is to use a hierarchical approach where the general problem is divided into a number of subproblems to simplify the decision-making process. There is an urgent need to find new approaches to data processing sys-tems management for mobile robots, which could connect the mathema tical apparatus of the existing methods with a clear structure of hierarchies. Therefore, a new approach to designing the structure for data conversion system when controlling mobile robot. It is based on the principle of data recycling when forming multi-layer fusion technologies of selected models. It improves the quality of its input parameters.

7. Tool environment architecture for processing of design procedures presented in the functionally adaptive form [№2 за 2014 год]
Authors: Gorbachev I.V., Pokhilko A.F., Tsygankov D.E.
Visitors: 11707
The article describes data representation method for design activity processes in functional adaptable form. A design choice is represented as a set of design procedures and their proce ssing software. It is implemented in the form of an interactive environment for creating functionally adapted CAD systems (FA CAD). This environment has a layered archite c-ture, the user interface on the top level and the database on the bottom level. The a rchitecture includes seven functional sub-systems.The article describes the functional subsystems, their functions, properties and characteristics. Special attention i s on the project management subsystem. It is the main component of an interactive environm ent for creating FA CAD systems. The subsystem links the output data with other functional subsystems. The principles of subsystems interaction with each other are considered using the user interface and the database interaction interface. In terms of inte raction with the user and project management subsystem, all functional subsystems are built on the same principle. It means they have the same stru c-ture. Its components interaction is examined in detail. The structure of th subsystem of FA CAD systems gene ration follows the structure of an interactive environment for creating FA CAD systems. FA CAD systems generation has four stages: loa d-ing model from the database, selecting a functionality set, source code generation and FA CAD system compilation. The a d-vantages of the presented environment structure of creating FA CAD systems are related to the preserving, modifying and further using of model design processes in a distributed automation environment.

8. A reference model based on arcon for it-infrastructure administrative management system [№2 за 2014 год]
Authors: Grishakov V.G., Loginov I.V.
Visitors: 12666
Virtual administrative management system for dedicated IT-component is created by higher management sys-tem using recursive-hierarchical method. Virtual administrative management system creation and management in its lifecycle processes is based on hybrid model of control object. The article offers ARCON adaptive reference model of collaborative network organizations as an abstract model for creating a control object hybrid model. An adaptive reference model dete r-mines the structure, functions, processes and architecture of collaborative network organization. It can be used to specify vi r-tual enterprises, where management is distributed between several agents who coordinate their actions. It is typical for virtual administrative management system members. Abstract parameters of refe rence model have particular values, which are typi-cal for virtual administrative management system. Internal and external parameters are defined on the general abstraction level. To determine administrative management system lifecycle the article offers ma pping from ARCON model evaluate component to the lifecycle typical model based on State Standard 15288. A new agent -based method is offered to control administrative management system development according to its lifecycle using reference model. This metho d determines a management procedure based on hybrid model. This method allows increasing effectiveness of creating, maintenance and evolution of administrative management system. The paper determines a usage procedure for a hybrid model and its filling for solving particular tasks.

9. Network planning method for developing complex engineering systems [№2 за 2014 год]
Authors: Dopira R.V., Kordyukov R.Yu., Begletsov A.A., Sergienko S.V.
Visitors: 12937
The problem of developing a performance planning method for structural-complicated projects. These projects can also include development of complex engineering systems, such as weapons and military equipment, power engineering facilities, industry and transport facilities is formulated and formalized. A project is a set of operations necessary to ach ieve the purpose. The duration of every operation is known. They are conne cted by order relation (obligatory precedence). A tran-sition to a market economy and modifications in domestic and international situation with crisis developments in national economy have lead to a necessity of critical analysis of methods for maintening state requirements for production and new approaches to these problems solution. The proposed solution method is based on network planning method, on the idea of critical path optimisation. Known methods are improved based on the dynamic programming scheme . The critical path of the project graph defines performance time of the project. A cooperation of project performers is formed based on a solution of the assignment problem using a dynamic programming method and the offered algorithm, that allows consider ing the works precedence ratio defining project structure. Enterprise industrial engineering is based on rational combination of all basic, auxiliary and serving processes in time and space. Singularities and methods of this combination are вшааукуте in various working conditions. At the same time industrial engineering should be correspond to general principles. They are continuity, proportionality, rhythm, parallelism concern. The offered method allows implementing these principles.

10. Complex engineering systems development management [№2 за 2014 год]
Authors: Dopira R.V., Kordyukov R.Yu., Platonov A.Yu., Begletsov A.A., Sergienko S.V.
Visitors: 11516
When preparing and performing complex engineering systems projects it is necessary to consider uncertainty which can lead to failures of project planned implementation time. These failures are caused by increasing works duration. Therefore it is necessary to develop a management technique to minimize consequences of untimely and poor -quality per-formance. The basis of the proposed management technique is an earned value method. It includes making a project complete d e-scription and a detailed implementation schedule at an initial stage. It allows making estimation of the fact sheet and to s u-pervise the project from the beginning to the end of works. The technique consists of the following stages: planning, control an operational administration. The sequence of actions is following: scoping of works; responsibility distribution to control project implementation; making a directive project schedule; an estimation of an actual process of project implementation comparing with a directive schedule; cost -effectiveness evaluation; forecasting total actual project expenses based on an observed process of project implementation; management of works in progress; management of changes of a directive project schedule. The offered technique is quite simple in use and allows making real time decisions.

| 1 | 2 | 3 | 4 | Next → ►