Software & Systems

Articles of journal № 3 at 2013 year.

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21. A software system to reconstruct probability density of stochastic membership function by using the small sample under multifactor influence [№3 за 2013 год]
Author: Зимин М.М.
Visitors: 10207
The paper describes software to recover probability density of stochastic membership function, allowing sup-plementing fuzzy analysis with stochastic calculations. This improves the assessment accuracy of various complex situations caused by dangerous or undesirable socio-economic, naturaland man-made processes. These processes development usually depends on many random factors. The developed software requires about 2,2 MB of memory and performs computations in a short time. The resulting probability density can be used in various probabilistic calculations, for example, to analyze the ava-lanche or sill risk and to provide operational safety in the understudied mountain regions. The examples of estimating the probabilities densities parameters with small samples are given.

22. Simulation modeling of the pneumo-hidro-mechanical system in a computer simulator [№3 за 2013 год]
Authors: Иванов В.В., Лаленков В.А.
Visitors: 10867
Simulation modeling of dynamic processes and systems is becoming more popular in computer simulators. The article sets out the principles of building a simulation model of a functioning air-hydro-mechanical system utilized in a computer simulator. The modeled system functioning may be characterized by simultaneous movement of liquid, gas, a physical body. The liquid and gas flow calculation is based on the fact that the liquid flows in the turbulent quadratic mode, whereas the gas flows at velocity below the sonic speed. Thechange of the gas and liquid quantity in the tanks of the mod-eled system are calculated based on the finite-differenceequations, and then the steady-state pressure is determined in the system. The simulation model has been implemented as a VC++ library. Each 100 ms the simulator program transfers the system parameters into the library and receives computer pressure values and liquid and gas distribution in the system. The generated simulator model of the system adequately describes changes in the flows and pressures, mass transfer in various modes.

23. Parallel computing in modeling solution process in micro level [№3 за 2013 год]
Authors: Ivanov S.I., Matasov A.V., Golubchikov M.A., Menshutina N.V.
Visitors: 10769
The article describes software for modeling the processes ofdissolution and water absorption at the micro level using high-performance computing. A simulation model of water absorption and dissolution of solids based on probabilistic cellular automata was proposed, software implementation of the calculation algorithm using parallel computing was dis-cussed. The model is based on the probabilistic cellular automata. This paper describes the operating principle of cellular au-tomata, the possible states of the cells and rules of transitions from one state to another, the assumptions of the model. The model allows carrying out numerical experiments for the bodies with multi-component composition and complex geometry (solids, coated or irregular body shape). The mathematical model can be used for pre-generated structures and also generate a structure of solids immediately prior to settlement. After numerical experiments the dissolution process of solid polymer nanocomposite was modeled in one week interval. The simulation results were compared with the experimental data on the example of water absorption and dissolution of polymer nanocomposites, containing "soft" and "hard" inclusions. The ade-quacy of developed model for dissolution and water absorption was proved.

24. The review of perspectives on electronic learning development in operator training systems and educational space centers [№3 за 2013 год]
Author: Клюева О.А.
Visitors: 14004
The article considers perspectives on electronic learningdevelopment, such as massive open online courses (MOOC), educational processes gamification and socialization, creating simulators, using augmented reality and mobilede-vices. Special attention is paid to the problem of education material formation for using in electronic education. Expediency of school sites creation is designated. The concept of using LMS and LCMS, standards and specifications for training sys-tems creation are also considered. Nowadays the tendency ofcreating space simulator centers and using innovative educa-tional technologies there can become a considerable contribution to development of youth training programs. First space simulator centers working experience has shown that they canhelp to get additional academic training on astronautics bases, control systems of manned spacecrafts. Preparation and presentation of educational and methodical material versions have to meet the requirements allowing using possibilities of software and hardware complex effectively. These requirements can in-clude an order of material formation, representations using modern visualization tools and variants of learning and progress monitoring. Uniting electronic leaning progressive ideas in the context of educational space centers development can also be an approbation of new ideas for future reference in operators training systems on difficult objects and processes management.

25. Artificial worlds: data distribution principles [№3 за 2013 год]
Author: Kol’chugina, E.A.
Visitors: 8158
The article considers conceptual organization of the unlimitedly growing distributed databases serviced by col-lective of software agents. Growing complexity of computer networks and their applications brings attention to creating the autonomic systems ca-pable to self-management, self-optimisation and self-development. Such autonomic systems can be considered as the artifi-cial worlds inhabited by artificial organisms constructedas software agents. The agents are in different relationswith each other and are gradually improving due to the competition and adaptation in computing environment. Each artificial organism belongs to one of the species possessing a special functional purpose. The community of artificial organisms is arranged by hierarchical principle, species occupy the subordinated position to another. The bottom levels of hierarchy are occupied by artificial organisms which are engaged in a data structures organization and processing of queries. The upper levels are pre-sented by the digital organisms managing the community. The principle of the hierarchical organization is intrinsic for other widely-known architectures, for example for Internet-architecture and Grid-systems. According to the general concept of autonomic multiagent system operating in computer network, it is supposed that used databases are spatially distributed and limitlessly growing in volume. It is offered to combine tuple-oriented spatial distribu-tion of database relations with domain-oriented principleof the internal representation of relations. The authors of the article offer an algorithm of data replenishment for based on above-stated principles limitlessly growing in volume databases. A new type of queries, the so-called expanded queries which can be realised to the distributed databases on the basis of the domain-oriented model is offered.

26. Developing USB 2.0 device based on dual-core system on a chip К1867ВЦ3АФ [№3 за 2013 год]
Authors: Конарев М.В., Макеев С.Н.
Visitors: 9513
The architecture of modern system on a chip K1867VTS3AF containing two digital signal processor cores, memory and a set of peripheral devices is considered in the article. Realization of communications between the personal computer and system on a chip using interface USB 2.0 is considered. The special software is developed on the assembler language for the SoC in compliance with requirements of USB 2.0 standard for communications with personal computer.The user software for OS Windows giving the user the opportunity toinitiate data transfers between K1867VTS3AF USB device and PC is developed. The driver of the K1867VTS3AF USB device for OS Windows is also developed.

27. The prototype of the computer clusters state analysis system based on support vectors method [№3 за 2013 год]
Authors: Конюхов С.С., Московский А.А., Рябинкин Е.А., Велихов В.Е.
Visitors: 7792
Increasing complexity of computer cluster systems highlights the problem of failure tolerance to provide their efficient work. Nowadays this problem is one of the most dynamically elaborating in the area of high performance computa-tions. The paper considers different implementation aspects of automated system performing classification of computer clus-ter states to predict and check critical events. The algorithm using statistical learning theory approach (support vector meth-od) is proposed to address these subjects. Its modular structure permits to use more robust and efficient methods to deal with subtasks of the general algorithm. The the algorithm implementation prototype is tested on sets of real-world data. Provided that correct parameters are selected its anomaly detection capability is shown. In the test experiments the prediction error of future possible states is 6–16 % while the critical change of control parameters is fixed within 3–5 prognosis time steps. Sen-sor failure tolerance with small numbers (5–10 %) of data series with outliers is proved. Possible improvements of the auto-mated classification system are related with on-line SVR algorithms and methods to deal with more sophisticated anomalous behaviour of computer clusters.

28. Social processes modeling and multi-agent approach [№3 за 2013 год]
Authors: Копылова Н.С., Murzin F.A., Курков И.А.
Visitors: 9794
The purpose of the article is a simplified model of society available for software implementation and based on multi-agent approach. The model includes several agent types, for example, workers,officials, owners etc. In addition, division within one group is possible. For example, workers who extract resources andworkers who process resources. Agents can change their type under certain predetermined conditions. The agent represents not a single individual but a group of people. Each agent is described by a set of properties and attributes. Properties include geographical situation, abilityto do cer-tain actions etc. An attribute is certain measurable variable (scale). Agent’s behavior depends on attributes’ value. Basic set of attributes is common to all types of agents but depends on agent’s type attribute can be in active or passive mode. Agents influence and interact with each other. Ways to influence depend on agents’ types. There are some base ways to interact. First, through changing attributes, for example, agent-officials collect taxes from agent-workers reducingthe level of their fund attribute. Second, through operations directive, for example, an agent-owner can send its subordinateworkers to a new location or give them a new job. Agent’s goal is to improve its attributes.

29. The onboard module for information support of the international space station crew [№3 за 2013 год]
Author: Kravchenko S.I.
Visitors: 8498
The article describes a new onboard interface module to present virtual user manuals on space experiments in Russian ISS section. The module positioned as the center for multimedia scenes composition and playback. The paper de-scribes the functional structure of the system, requirements to the operating environment, type and purpose of each element of the structure, a set of control files, the role of XML-attributes. A choice of a linear, single-level internal XML structure to improve system reliability is declared. Detailed functional and situational sequence diagrams of the module with detailed phased description of the inter-module interaction areprovided. The structure of information dataware purposefully divided into two main categories: compact controls and structuring XML-descriptions and a "big" collection of multimedia. This ap-proach is determined by the specific procedures of updating tasks and technical capacity of the board-to-Earth communica-tion channel. There are basic steps of multimedia resources ground preparation. A special attention is given to the operator situational behavior when working with virtual controls, logging results and crew performance assessment. There are refer-ences to information sources about technical experiments and researches using virtual guidance (VIGU) in the Russian ISS segment.

30. Application of modern intelligent and information technologies to upgrade educational process [№3 за 2013 год]
Authors: Куриленко И.Е., Ян Пайнг
Visitors: 9259
The paper considers possibilities of modern information technologies that are useful for the educational pro-cess modernization. The example of a modern educational environment construction (including intelligent programmed assis-tant) using virtualization, knowledge management and multi-agent technology is described. The article also describes virtual environment implemented prototype to conduct laboratory studies on number of subjects teaching in the Department of Ap-plied Mathematics of National Research University (MPEI). The prototype contains components such as educational portal that provides access to system of intelligent assistants and portals of courses; Knowledge Collection and ModificationSystem (KCMS); portals of courses with electronic books, online lectures (presentations), interactive descriptions of the laboratory works, students feedback system, virtual laboratories for courses.

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