Software & Systems

Articles of journal № 3 at 2013 year.

Order result by: Public date | Title | Authors |

31. Algorithm for detection and segmentation of defects in transparent minerals on photographs [№3 за 2013 год]
Authors: Лебедев А.С., Гаганов В.А., Игнатенко А.В.
Visitors: 11389
The paper proposes a new algorithm to detect and segment defects in transparent minerals that is more accurate and stable than existing methods. Many existing algorithms cannot be applied to the defect detection problem as they have restrictions on input data and require some additional prior knowledge about shape of detected objects, their sizeand contrast. The most useful methods that can be applied to defect detection are algorithms based on background estimation. Such algo-rithms use information about image intensity. The proposed algorithm estimates the background more precisely than existing methods, because, besides image intensity, it takes intoaccount the physical principles of input data acquirement. The image is segmented based on background estimation. Segments are classified using classifier trained by support vector machine al-gorithm. The algorithm was tested on real world data from diamond industry. It also was compared with other background estimation algorithms. The results of comparison show that theproposed algorithm is more precise than other existing methods.

32. Banking institution corporate multiservice network. Construction example [№3 за 2013 год]
Author: Yu.M. Lisetskiy
Visitors: 16387
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.

33. Application features of information technologies in youth space centers [№3 за 2013 год]
Author: Максимов А.С.
Visitors: 9195
Nowadays education becomes an important factor in ensuring the competitive ability of the country. Youth Space centers can play a great role in it. The article considers main application features of modern information technologies in Space centers, the role of youth Space centers in the system of additional school education. Application of modern infor-mation technologies in Space centers enables using computers for information presenting, as creative development means of trainees, for monitoring, testing and diagnosis automation,to organize communications and intelligence competitions and other activities increasing students motivation and satisfaction degree of their individual needs. The main tools implementing these opportunities are interactive audio-visual stereo complexes, equipment systems of multimedia computer labs, avirtual simulator of the International Space Station and MissionControl Center, interactive analogs of manned transportspaceship "Soyuz-TMA", spaceship "Vostok", search and rescue helicopter, integrating software and hardware complex with computer network, integrated data exchange complex and learning environment. The article reveals a composition, features and basic methods of using these media in the youth educational Space centers.

34. Solving average delay cost routing problem [№3 за 2013 год]
Authors: Margolis B.I., Muzanna M.M.
Visitors: 9217
The article describes a flow model of an information network with alternative routing of messages to any num-ber of switching nodes and links. The authors formulate the optimization criteria for the delay posts, restrictions on the сhannel сapacity and the conservation of flows on the network. Analytical relations for information flows optimal distribu-tion in a network of three lines are recieved using the method of Lagrange multipliers. Obtained relations are extended to var-ious numbers of lines. The paper shows formulas validity tocalculate the optimal flow distribution for the specialcase of a network consisting of two lines. The calculation program inMatLab is developed. It allows for the topological network struc-ture, the input streams matrix and bandwidth to find the optimal flow distribution in the network consisting of an arbitrary number of nodes and links. The article shows an example of the input flows optimal division for a network of four nodes and three lines, providing a minimum average latency. Changing the flow optimal distribution for this example is shown with a decrease in the number of lines to two. The paper outlines approaches to the problem of flows optimal distribution with in-termediate nodes in a simulated network topology.

35. Automated system of decision making support in emergencies [№3 за 2013 год]
Authors: Матюшин М.М., Потоцкий С.И., Потапов В.И., Скобелев П.О., Лахин О.И.
Visitors: 12984
Safety precautions of the crew and spacecraft casualty control are one of the most important tasks of the mod-ern satellites mission control. The main conditions to solve this task successfully are timely detection and elimination of emergency situations aboard a spacecraft. The article forms the purposes, principles, overall architecture, functional charac-teristics and basic requirements to creation of an automated system of decision-making support in emergencies on the ISS. The paper describes generalized functional structure of the automated system of decision-making support in emergency situa-tions, the most important parameters characterizing the emergency depressurization, the main formats to display theISS sta-tus and oversight of crew activities while depressurization based on real flight data and while emergency situation simulation. When choosing the recommended solutions, it’s proposed to use classic methods of the decision-making theory based onthe representation of the emergency countering process in theform of Markov network with discrete states, and multi-agent technologies. A block diagram of the depressurization modeling process is considered, there is a structure of the system soft-ware. Now the system is used by the lead operational control team in order to improve the efficiency and validity of deci-sions.

36. Human-machine interface organization with intellectualization of person and computer system interaction [№3 за 2013 год]
Author: Минитаева А.М.
Visitors: 12086
The article discribes intellectualization principles of human-computer system based on modern high-performance microprocessors. The concept of the man-machine system with intellectualization of theoretical principles and algorithms constructing a mathematical model is developed.Particularly urgent research direction of digital computing sys-tems with artificial intelligence. The main motivating reason to create them is reliability at high intensity inthe modern world. Other special characteristic is the requirement of flexibility which means reducing any person from any individual computer. This includes the ability to perform a variety of tasks, interoperability of several systems, especially safety, reveal-ing intentions of a person to external members, etc. Theapproach described above gives rise to a new class "systems with ar-tificial intelligence elements". The paper presents thegeneral structure of the interaction between the operator, the object, the environment and the control system, independent models and operator internal displays are highlighted. This can correct some of the operator's actions that could lead to undesirable consequences. The development of computer systems intelligent control systems with the algorithmic interaction between the operator, the object, the environment and management systems will allow realizing the relevant objectives of the human-machine interface organization with human-computer complex in-tellectualization, automated information management systems construction and development, and diagnosing psychological and physiological security of the person.

37. Russian regions activity indicators analysis software system based on ontological models and data patterns [№3 за 2013 год]
Authors: Anton D. Moscowsky, M.A. Rovbo, Хорошевский В.Ф.
Visitors: 10539
An analyst workbench development and implementation based on intelligent mining of large amounts of statis-tical data in the domains of science, education and innovation is discussed in the paper. Scientific and technical challenges are pointed out. The R&D objectives are carried out: a specification of an indicators system of science, educationand innova-tion, as well as aggregation of statistical data for providing analysis of scientific, educational and innovation activity of Rus-sian regions in various aspects. Methods to form vectors ofspecific indicators and aggregates for statistical datasets are de-veloped. Business tasks are solved including identification of semantically similar vectors for building clusters of “similar” regions, and dynamic analysis of statistical data for monitoring performance of Russian regions in science, education and in-novation. A brief overview of the art state in domain is provided. A hybrid approach proposed in the paper integrates classi-cal mathematical methods for correlation analysis, pattern and time series analysis with methods of their semantic interpreta-tion. The developed software provides analytical support for trends identification, atypical dynamics of indicators and “best performance” patterns specification. Implementation of user-friendly interfaces is also discussed.

38. A distributed platform for parallel training of DisANN artificial neural networksA distributed platform for parallel training of disann artificial neural networks [№3 за 2013 год]
Authors: Нгуен Занг, Краснощеков А.А.
Visitors: 11483
The article describes the process of design, development and implementation of distributed neural network learning system based on learning-by-block algorithm for feed-forward neural networks. Distributing occurs in the array of training vectors which is divided into several blocks, transmitted to computing nodes. Thus, the neural network training is parallelized within the same epoch. Since neural networks are resistant to errors, losses are not critical. To avoid synchroniza tion bottlenecks in the end of each epoch, training may be carried out with losses of blocks. When synchronizing and transit-ing to the next epoch only a certain percentage of used training blocks or predetermined processor time is required. Within each period loss in training is compensated with the weighted value of last successful result. The system is based on a previ-ously created Anthill open-source platform for grid-computing. Applying the concept of grid-computing, the ability of con-trolling through web-interface and free choice of libraries for neural networks simulation allowed creating a system with a high degree of flexibility and ease of use.

39. Mathematical formulation for multicriterion problem of flight plan optimization [№3 за 2013 год]
Authors: Орловский Н.М., Беляев А.М.
Visitors: 11125
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.

40. 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: 12194
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.

◄ ← Preview | 1 | 2 | 3 | 4 | 5 | 6 | Next → ►