Software & Systems

Articles of journal № 3 at 2013 year.

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11. Solving the problem of premises, buildings and constructions classification according to explosion and fire hazard categories using CAD [№3 за 2013 год]
Authors: Баранников Н.И., Сергеева М.А.
Visitors: 14518
The explosion and fire hazard object categories are the factor defining the requirements to designing and set-ting out a building. Correct definition of this category for buildings or constructions allows making optimum design decisions and preventing emergency situations with minimum necessary resource sosts. The article investigates the problem of categorization of premises, buildings and constructions according to explosion and fire hazard. The structure of the automated subsystem which is part of fire safety CAD is offered. The authors also offer the information support contents for a subsystem. The calculationalgorithms of explosion and fire hazard criteria using the rules of fire load optimization in CAD are considered.

12. Using virtualization technologies of computing and graphics servers when designing complex simulators and operator training systems [№3 за 2013 год]
Author: Yanyushkin V.V.
Visitors: 12195
The article considers existing approaches to developing systems, their problems, shortcomings and solutions using new server technologies and virtualization. The disadvantages are: small efficiency of using computing resources,im-possibility of tasks and applications immediate rearrangement in case of emergency situations and system separate knots out-age that is an extremely important problem when designing high-loaded user systems of control, monitoring and training. The article also describes NVIDIA VGX advanced technology used in 3D-real-time graphics simulators. Using this technology offers new opportunities for designing training systems and simulators, followed by virtualization of CPU computing re-sources and graphic resources. It provides a new level of mobility to users and applications that consume 3D-models data calculation on portable computers, as well as the parallel operation of multiple remote users. NVIDIA solutions are combined in the technology of data centers and cloud computing which can be used for development of new generation training sys-tems and simulators.

13. Effectiveness investigation of biology-inspired algorithms for combinatorial optimization [№3 за 2013 год]
Authors: Семенкина О.Е., Семенкина О.Э.
Visitors: 11861
Self-adaptive biology-inspired algorithms for the travelling salesman problem are introduced. Self-adaptation is organized through the settings and/or parameters stochasticchoice based on probability distributions of these operators ac-tivation (parameters use) during an algorithm execution. Probability distributions are modified on each algorithm’s step ac-cordingly to the operators (parameters) use success that is defined through the fitness value of solutions built with these oper-ators (parameters). Effectiveness of proposed algorithms is compared with known bio-inspired algorithms, namely with con-ventional genetic algorithm, ant colony optimization algorithm and intelligent water drops algorithm as well as with local search (Lean–Kernighan heuristic). The usefulness of the proposed approach is demonstrated on problems with high dimen-sion.

14. To creation of inventing system based on a systemology [№3 за 2013 год]
Authors: Дорохов И.Н., Butenko L.N., Цыканова М.А., Semenov N.A.
Visitors: 9087
The inventive task is represented in the form of the conceptual scheme of system tasks universal solver. The system task types are defined together with solution methods of these tasks on the computer. In the context of sistemology, system conceptual design is represented as lifting process on epistemological hierarchy of systems. At the fist stageof con-ceptual design the generating system representing a task for the system to execute is defined. At the second stage the struc-tured system meeting four certain requirements is defined. Example of this approach realization is creating the synthesis method of heuristic inventive receptions based on sistemology.

15. 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: 10208
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.

16. Banking institution corporate multiservice network. Construction example [№3 за 2013 год]
Author: Yu.M. Lisetskiy
Visitors: 16388
The article is concerned with the question of multiservice networks` construction, which are now the basic of the IT-infrastructure of almost every corporate tier organisation with geographically dispersed structure. The article defines the term “multiservice network”, represents a set of requirements to modern corporate multiservice networks, to correspond-ing infrastructure and to systems` functionality. Basiccomponents of the multiservice network, their functions and its con-struction topology are described. The principles, requirements and approaches to corporate multiservice network construction of banking institution and the way of integration of call centre to it are considered in the article. It also presents the task se-quence solved during the process of their integration. Theexample of corporate multiservice network construction for VTB Bank in Ukraine is described, and namely: the problem state, task setting, solution and project development, implementation phases, project realisation experience and its results for the bank.

17. Mathematical formulation for multicriterion problem of flight plan optimization [№3 за 2013 год]
Authors: Орловский Н.М., Беляев А.М.
Visitors: 11126
The stage of highly skilled flight scheduling is the ground for space flight control successful tasks fulfillment. There are only three most important documents among others on this stage: on-orbit operation summary, weekly lookahead plan, short-term plan. Mentioned plans are different in planning interval and data level accuracy. The major structure of every plan type is the flight operation. The operator ought to analyze a large amount of information to find a suitable location for flight operation in interval under consideration. The multiple criteria automation of this process could release ascheduler to solve other tasks. The first criterion is using crew spare time, a crew is one of the major resources on the orbit complex. The second criterion is an evaluation of crew general level of competence for performance of all scheduling activities.The third criterion is ranking the most urgency and important flight operations in the plan to accomplish them in the first place. Math-ematical representation of mentioned criterions and scheduling restrictions is done. A mathematical interpretation of calculat-ing sequencing for variable priority of activity is designed. Thus, the next stage is the elaboration of genetic algorithm based on the suggested mathematical formulation for multiple criteria problem of crew activity optimization.

18. Mathematical formulation of one-criterion optimization problem of crew actions scheduling on Russian segment of the International space station [№3 за 2013 год]
Authors: Орловский Н.М., Воробьев С.П.
Visitors: 12195
The flight scheduling process is briefly described in the article. It is one of the most important stages of space flight control task solution. Three stages of flight scheduling are given: strategic, tactical and executive. The executive sched-uling is divided into three phases: long-term, short-term anddetailed. The result of each scheduling phase is presented by special plan type: on-orbit operation summary, weekly lookahead plan, short-term plan. The difference of these plan types is in planning interval and data processing depth. The sequence of operator basic actions at placing every next activity into a plan is given. The formal provision of information to create a short-term plan is proposed to take from the following factors: list of planning activities, list of astronauts on the International Space Station (ISS) board, resource data. Themathematical modeling of all required data and restrictions is made. A crew downtime minimization is the selected optimization criterion. Two approaches are used to set up an experiment: the directsearch method and the branch and bound method. An analysis of the algorithms results is made. The conclusions about optimization criterion selection accuracy and ramification rules accord-ing to the branch and bound method are formulated. The future tasks regarding crew activities scheduling process optimiza-tion are defined.

19. Partitioning method and its application when classifying heterogeneous information [№3 за 2013 год]
Authors: Бурилин А.В., Гордеев Р.Н., Борисов П.А.
Visitors: 10114
In our previous work we considered the analysis of homogeneity and believe that it has great potential for ef-fective visualization of ensemble of trees and similar machine learning algorithms. However, there are at least two drawbacks to this approach: the computational problems may arise if the number of training observations is very large and, more im-portantly, the accuracy of prediction in two-dimensional embeddings often much worse than in the original ensemble oftrees algorithms, this means that significant information is lostin low-dimensional embeddings. We present a simple extension analysis of homogeneity called sectioning, which often solves the above mentioned prob-lems in the case of multi-class ranking and can lead to a significant improvement in prediction accuracy.

20. Model development methodology based on modified Petri nets [№3 за 2013 год]
Authors: Суконщиков А.А., Кочкин Д.В.
Visitors: 9653
One of the CAM networks key tendencies of is integration of controlling system technologies. In order to maintain the high quality of control it is necessary to guarantee the joint action of all the CAM subsystems, as well as to en-sure the uninterruptable information interchange together with assistance of the differentiated service of various data flows. QoS (Quality of Service) technologies allow solving this problem adjusting the policy of maintenance of the networking equipment traffic as well as front-end computers’ parameters. The network simulation data conducted using some mathemat-ical tool can become the basis for the selection of theadjustments. As a tool the article suggests using an extension construct-ed on the basis of colored, fuzzy, timed, hierarchical and priority Petri networks. The article provides a formal description of the developed mathematical tool of the modified fuzzy Petri networks. It shows the advantages when modeling network de-vices. According to the modified fuzzy Petri Nets tool the following two methods have been developed: constructing network devices and their elements; composition of the network devices. The network model received with the help of the developed methods can be used for such characteristics of traffic as delay, jitter, transmission speed as well as detecting some problem areas in the network. There are results of modeling various queues of routers, andthe influence of a TCP/IP transmit window on the parame-ters of transfer traffic.

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