Software & Systems

Articles of journal № 3 at 2016 year.

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1. 3D modeling for mobile video systems [№3 за 2016 год]
Authors: Izvozchikova V.V., Mezhenin A.V.
Visitors: 6209
The research focuses on the development of virtual simulators that simulate actual service conditions for testing and simulation of shooting methods by mobile video systems. It is assumed that 3D-graphics means emulate not only the environment, shooting conditions, but also video systems themselves: visual facilities, onboard robot cameras and UAVs. The use of such simulators allows creating, refining and testing various algorithms of applied intelligent systems without creating complex and expensive stands. The article considers the issues of performance evaluation of recognition and reconstruction systems that use a polygonal network for data presentation. To assess the reconstruction quality and accuracy of the polygonal network the authors propose the Hausdorff dimension as a mathematical tool. The results of testing these methods are: virtual environments use and assessment of polygonal networks similarity. At the stage of segmentation and location of vertices and segments of the objects the authors show the use of both real images obtained by real camera, as well as synthesized images. At the reconstruction phase to test one of reconstruction systems they also used a set of synthesized images. In order to assess the similarity of polygonal objects based on the Hausdorff dimension the authors designed corresponding functions and showed the results of their work.

2. A numerical simulation of multi-spectral photo-acoustic imaging toward hematological analysis [№3 за 2016 год]
Authors: rinh Quang Duc, Nguyen Hoai Giang
Visitors: 4766
This paper presents pilot studies to assert the feasibility of Photo-Acoustic Tomography combined with PhotoAcoustic Spectroscopy applied to quantitative clinical examination as noninvasive measurement for blood analysts. To estimate the parameters of practical measurement systems in the future, we simulate obtaining the results using a program that was build in Matlab environment. For the assessment, we examined the technique in the case of glucose measurement as an example. With assumption of an aqueous mixture that includes: Glucose, Urea, Albumin, γ-Globulin evenly dissolved in water, the glucose concentration was extracted from the mixture under excitation light of 300mW and the Fourier analysis of a photoacoustic signal. Throughout the simulation, the glucose concentration was determined as 2.8 g/l corresponding to photoacoustic pressure of 2.27 Pa in the condition of 10 mm soft tissue depth and 1mm diameter vessel under the light excitation power.

3. Forecasting optimal duration of a beer main fermentation process using the kalman filter [№3 за 2016 год]
Authors: Niyonsaba T., Pavlov V.A.
Visitors: 4824
One of the most important processes of beer production is the main process of fermentation. In this process, the wort transforms into beer. The quality of beer depends on the dynamics of wort parameters. The main fermentation process continues for 10 days and requires high costs. Therefore, the main purpose of this article is to forecast the optimal duration of the beer main fermentation process and provide its optimal control. The Kalman filter can provide optimal control of the main fermentation process. It also estimates state variables of the main fermentation process taking into account the characteristics of random effects at the object’s input and filters measuring noise. The initial values of raw materials and control parameters of the beer main fermentation process can be determined based on the predicted completion time of the main fermentation process.

4. Forest fire simulation using an agent-based model [№3 за 2016 год]
Author: Yarovoy S.V.
Visitors: 8659
The article considers the task of modeling forest fire situation. To solve it the authors propose to use the agent-based approach with the geographic information systems (GIS) technology that allows combining the advantages of both. As a result, an agent-based model has been developed. This model allows predicting the spread of a forest fire edge and simulating the direct method of fighting grass-roots forest fires. Any portion of the real terrain maps can be used as an environment for agents. The proposed model uses two types of agents. Agents of the first type (A agents) are areas of fire front propagation and are used to model the behavior of forest fire. Taken together, they represent forest fire edge on a map. The model allows multiple edges, which independently spread in different parts of the map. Agents of the second type (B agents) are used for simulating firefighting actions and affect A agents. Based on this model the authors developed a software package for a wide range of tasks. First, the system is useful for determining the operational parameters of grass-roots forest fires spread and development of measures to prevent and fight it. Second, this system can serve as a basis for forest firefighting training systems for forestry workers and the Ministry of Emergency Situations as a part of advanced professional training, as well as for teaching students of universities and colleges.

5. Search algorithm of optimal sensors location for solving the space monitoring problem [№3 за 2016 год]
Authors: Kochkarov A.A., Yatskin D.V.
Visitors: 10193
The paper considers the task of space monitoring, an algorithm and software package to solve it. From this problem the authors move to the problem of detection, and then to the problem of geometrical sensors location. It is proposed to use a decentralized robotic network to solve th у proposed problem. The authors set limitations and assumptions for sensors location problem leading to the problem of space covering. They also discretize problem parameters. The paper describes the problem in detail from a mathematical point of view, develops the algorithm to solve it, estimates its complexity. There mathematical and software models of the problem. The authors develop a software package that implements the specified algorithm. The map of the area and a number of physical parameters of the sensor serve as input data for a software package. The package allows calculating points in space, where the placed devices (detectors) help to solve the monitoring problem. This software package was used for a series of tests. The tests showed efficiency, correctness and optimality of the developed approaches and the algorithm. Due to the low polynomial computational complexity of the algorithm the software package can solve monitoring tasks for the particular case of large areas of monitoring, as well as for a big number of sensors.

6. Aspect-oriented programming as an approach to improve the efficiency of IT projects economic performance [№3 за 2016 год]
Authors: Goncharov А.А., Semenov N.A.
Visitors: 11576
Budget evaluation of the developed project, expenditure classification, time development planning and cost analysis are accompanied by inaccuracies and distortions due to the fact that the initial code of industrial information systems is characterized by undue complexity, excessive duplication, formulaic errors, uncertainty, strong relationship s between modules. The article is devoted to the method of solving the current problem of increasing efficiency of IT-projects economic performance. It describes the modern approach to large-scale information system design using aspect-oriented programming. Aspect-oriented programming is a modern development of object-oriented programming. It is intended to separate business logic from information systems through features. Business logic describes business rules implementation for particular industrial enterprises. The article highlights the relevance of using aspect-oriented programming in large industrial information systems. It also describes its advantages and disadvantages in terms of the greatest practical value. The authors propose a mechanism that allows abstracting business processes at all stages of design iterations and implementation of non-essential (auxiliary) aspects of the system. In addition, the article provides a practical example of using aspect-oriented programming. Abstracting a set of problems into aspects allows obtaining the correct display of the links between business processes and requirements to the implementation of the designed information system domain objects.

7. Database security: problems and prospects [№3 за 2016 год]
Authors: Poltavtseva M.A., Khabarov A.R.
Visitors: 27858
Data protection issues are critical when ensuring modern enterprise systems security. The paper is devoted to the current situation in database systems security. The paper provides an overview of existing publications, both Russian and foreign authors. It reviews the stages of a database information security systems evolution. The paper describes modern complex problems in DBMS data protection, both theoretical and practical. The analysis of security issues takes into account new directions of the database development, such as “in memory” and NoSQL DBMS. The article describes database features in terms of information security compared with other types of software. It includes the basic database vulnerabilities division based on selected features. The authors formulate promising ways of research and development of security systems for building reliable and secure information management systems.

8. External destabilizing factors influence on integrated circuit low-frequency noise [№3 за 2016 год]
Authors: Gorlov M.I., Zhukov D.M.
Visitors: 7021
The article presents test results of low-frequency noise measurement at chip pins depending on environment temperature, as well as with an electrostatic discharge impact. The data shows that low-frequency noise may be an informative parameter for integrated circuit diagnostics and grading by their reliability. A low-frequency noise changes under the influence of external factors. The variation value depends on an integrated circuit state. The number of experiments conducted by the authors prove the fact. For example there is a cumulative effect of electrostatic discharge, i.e. each subsequent discharge affects a noise value stronger than the previous one. The dependence of low-frequency noise on a temperature says that the change in an integrated circuit internal state leads noise value changing. Such dependence gives reasons to believe that low-frequency noise may be an indicator of any external influence, which causes changing of integrated circuit internal state. In addition, the sensitivity of low-frequency noise as the informative parameter suggests its value changing during electrostatic defect annealing. As known from literature, after annealing the defects of electrostatic discharges are partially or completely eliminated. The noise change after annealing proves a direct correlation between its magnitude and an integrated circuit structure internal state. Thus, the experiments, which show a direct bond between a noise value and an integrated circuit internal state, allow developing techniques for comparative tests and integrated circuit grading by reliability. The article presents a method for comparative assessment of quality and reliability of two or more integrated circuit lots.

9. Imprecise temporal information processing [№3 за 2016 год]
Authors: Fomin V.V., Maltsev S.V.
Visitors: 8332
The article presents the results of extensive research resulting from a practical need in improving the effectiveness of representation methods, extraction algorithms, processing fuzzy temporal data. The authors focus on ontological models of prediction and interpretation during interaction with imprecise temporal information. They propose a data storage methodology as well as models and unified procedures for extracting fuzzy information. The pragmatic of temporal data representation algorithms is considered using a new so-called possibilistic temporal information in analytical systems, where the parameters of inaccuracy and efficiency are crucial for making business decisions. The article proposes solutions for the problems of imprecise temporal information storage and retrieval by constructing a model of processing fuzzy temporal relations between time points and/or intervals. The concept of fuzzy temporal information analysis and presentation is described within development of temporal relational databases framework taking into account the criteria of inaccuracies, ambiguity and uncertainty. The authors developed he algebra of possibilistic relations between points and/or intervals. It defines the concept of possibilistic time point, possibilistic interval and corresponding values of possibilistic time points and intervals. The example of extension of one of the relations describes the fragment of a formalized algorithm of algebra implementation. The authors propose an approach to design and modeling a fuzzy temporal domain as well as the relations between possibilistic intervals and time points. The article describes an implemented library of algorithms for processing relations between possibilistic time points and/or intervals, as well as corresponding procedures and functions on SQL platform. At the end, the article describes the results of integration of the library of algorithms in a commercial project of analysis system for a telecommunication company. It also describes areas for further development of application tools based on the theory of a fuzzy-temporal model.

10. Natural language user interface of a dialogue system [№3 за 2016 год]
Authors: Posevkin R.V., Bessmertny I.A.
Visitors: 13465
Many people interact with software every day. Due to computer systems expansion to all fields of people’s activity the problem of transition from visual and command interfaces to natural language user interfaces is becoming more and more relevant. The article describes computational linguistics and natural language processing methods. It considers all phases of natural language processing such as morphological, syntactic and semantic analysis. Limited language is represented as a subset of natural language. This language allows avoiding linguistic uncertainty and decreases natural language elements processing time. Translation system is a part of a dialogue system. Methods of natural language manipulation are applied in machine translation software systems, search engines, data exchange, automatic abstracting and expert systems. The paper represents a formal definition of a dialogue system as a Markov decision process. The authors developed a prototype of natural language user interface for a structured data source. It converts natural language user’s query into SQL query to database. User interface interacts with a database that contains information about existent program libraries and frameworks. Consequently, using natural language processing methods makes it possible to develop natural language user interface providing a capability to interact with a dialogue system.

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