Journal archive
IT business |
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Business information systems |
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One of the actual problems of applied informatics is the issue of a good decomposition of a business
process model. Almost any applied project in the field of IT development includes modeling of
a business processes, so that their success depends significantly on the quality of the models used for
the analysis, re-engineering and automation. The decomposition of business process model is a key
problem in the development of IT enterprise architecture. While this problem is not yet solved, the
work of an analyst remain a craft, while engineering approach is required. The purpose of this article
is to analyze the theoretical basis and in the context of the Bunge-Wanda Weber ontologicy, develop
the principles of a decomposition, which can be considered as a «good» one, suggest criterion
which will help to achieve a proper model decomposition. It is wrong to understand decomposition
as an identification of components of a system. One should take into consideration the links between
its modules — if the connections are complex, their analysis may negate the advantage of decomposition.
Strongly connected components cannot be considered separately, but only jointly. The reason
for the strong connection is the intersection of an information objects and sub-processes, resulting decomposition.
The peculiarity of this research is that we consider a coordinated decomposition of data
objects, process operations and external events.
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The article discusses the problem of optimizing the implementation of the business planning process,
corresponding with specific technical and economic conditions and constraints. To solve this
problem, we propose to use the intellectual information decision support system that allows to optimize
the formation of a specific business plan. Development and creation of such a system is based on
network models and methods of economic-mathematical modeling and computer expert systems technology.
The results obtained may serve as a basis for the development of appropriate systems of intellectual
support management decision making in the implementation of the business planning process.
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IT management |
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Performance management |
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The concept of «risk» was quite developed as economic category. The theory of risk is actively
developing. Partly for that reason, the term risk of different authors may have a different interpretation.
In connection with the above, the notion of «risk» is often used in everyday speech. This word is
used more often than the word «cat» according to the frequency dictionary of the Russian language.
«The classical risk theory» of Daniel Bernoulli may be chosen as the basic concept of system analysis.
But the «neoclassical theory» of Lawrence Galitz can also be applied. Risk analysis with the
help of the special theory is reduced to the analysis of the stability of the automated control system.
Mathematical methods of operational calculus applied. Sustainability criteria by using the theory of
functions of a complex variable are used. The dynamics of the control system is investigated by means
of special software — simulation model.
Graphic illustration of the dynamics of stability displayed by means of «locus» — special figure
is automatically created on the complex plane. This indicator means used is provided by software developed
by the authors. The structure of the research simulation software provides. Numerical examples
illustrate the application of a special simulation system — the software package Actor Pilgrim.
Below we consider the systematic analysis of risky management processes by means of the special
scales that are using in the decision-making support system DSS (for example, investment projects).
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Software engineering |
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Algorithmic efficiency |
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The photography is just the projection of objects on the image plane and we can judge about properties
and characteristics of depicted objects only indirectly based on our knowledge about them.
Besides the quality of the resulting image depends on many factors such as the characteristics of the
camera, the shooting angle, light and the speed of movement of the objects on the stage relative to
the survey point. But despite all the diversity of external factors affecting the quality of the image, the
picture remains virtually the only visual data carrier that can contain the total information about the
shape of the object, its size, color, and spatial location relative to other objects. To improve the accuracy
and precision of information on photos about the object, using the special precision camera and
developed methods of scanning to produce digital images of objects for which high precision is possible
to determine their geometrical parameters. The article discusses various methods for the detection
of object contour, having the shape of a ball, in a digital image. Comparative analysis of methods
to determine the most accurate and resistant to the effects of the threshold multiplier used as detector.
The proposed method definition of gradient by calculating the maximum values of the Laplace
operator, which allows to significantly reduce the error detection circuits and to avoid gross errors in
the further estimation of the geometric parameters of the object.
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Network Technologies |
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The article is devoted to the subject of finite automata theory and regular expressions. It has practical
and theoretical issues. The theoretical issue considers a calculation of cardinality (size) of regular
expression. The main problem is in the redundant parts of regular expressions. We are considering
their simplification. This process splits into two parts: redundancy removing, finite condition adding.
Finite condition introduced to remove uncertainty and allows calculate exact number of all combinations.
In case of complex regular expressions the intersection of patterns appeared. The most difficult
problem is to calculate cardinality with that intersection. Authors propose to avoid using of complex
regular expressions with intersections. The parameter of cardinality will be used in practical part as
optimality criterion. The practical issue operates with objects identified by pattern and input string on
the other side. Input string represents user-defined URL and objects represented by dynamic Web-page
with variable parts. Each variable of the input data involved in behavior of the web-server in data selection.
The main thesis proposed by authors in assignment of priority to the ambiguous patterns. The
pattern with the lowest cardinality will be the most suitable. The solution should help to route URLs
in classical developing methods.
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Information security |
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The problem of the generation of the key sequences on the basis of biometric data is described.
Objective: To develop a method of generating a key sequence based on the subject of voice parameters
with indicators of reliability and key length exceeding achieved. Two features spaces of human
voice are proposed: dependent and independent of the uttered phrase. The methods of generating keys
based on voice messages on the basis of fuzzy extractors using Hadamard or Bose — Chaudhuri —
Hocquenghem error correcting codes are proposed. Also the ranking procedure of most stable features
individual for each subject was proposed. The effectiveness of the proposed method was defined. The
optimum methods for each proposed feature space have been found. These results are superior to previously
achieved by generating a key sequence based on voice.
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Laboratory |
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Models and Methods |
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The purpose of writing of this article is development of optimizing models of the project of expansion
of production. Also, the aim of this work is to study the possible ways to integrate the developed
models in decision support systems. In models are considered including such factors as probable demand,
size of the order, restriction on material resources and capacities. The question of prospects of
attraction of the credit at implementation of the project of expansion of production is investigated.
These problems are solved about application of methods of research of operations. Also some practical
examples of use of the developed models at implementation of the project of expansion of production
for the enterprise making the innovative heating equipment are given. Thus the MS Excel program is
used. The developed models can be integrated into information systems of support of decision-making
that will allow to increase validity of the made administrative decisions. These models while integrating
them into the decision support system may be stored in the form of special programs, batch
files, modules, and spreadsheets.
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History of profession |
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Establishing informatics |
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The article presents the contribution of ideas in the development of informatics by soviet scientist
F. E Temnikov (1906-1993), who was the first in 1963, used the term «informatics» in the domestic
scientific literature. Temnikov’s project of informatics was different from the Western understanding of
it as «information automatic» by K. Steinbuch (Germany), Ph. Dreyfus (France) and W. Bauer (USA).
It suggested the creation of an integrated discipline, consisting of the theory of information elements,
the theory of information processes and the theory of information systems. Information theory (mathematical
theory of communication) was to be the theoretical foundation of informatics. The article reveals
the essence of Temnikov’s approach to the creation of informatics, described and characterized
by such ideas as informatics of higher systems, the triad «informatics — systematics — intellectic»,
«gene» of information system, ways of presenting information, evaluations (measures) of information
and synchronous fields of communication. The authors emphasize the importance and potential
of ideas by F. E. Temnikov today.
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IT in chemical technology |
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Automated control systems |
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The paper presents the models and methods for creation and application of hybrid intelligent systems,
providing solvingthe unformalized multidisciplinary problems in the field of the reliability and
safety of chemical and petrochemical manufactures in terms of processing large volumes of information.
The self-organizing algorithm and simulation gives opportunity to solve inter-and multidisciplinary
problems on the basis of aggregation of goals and objectives of specialists of different scientific
fields, and an adequate exchange of information among them on the decisions made and the results
achieved in various stages of investigation. Integration of knowledge and increased the effectiveness
of decision making in the field of the failure risk reduction are the main result of the joint application
of the self-organizing algorithm and simulation.
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