articles
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№ 5(65)
31 october 2016 year
Rubric: Information security Authors: Sulavko A., Borisov R., Eremenko A. |
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. Continue... |
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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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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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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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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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№ 6(66)
30 december 2016 year
Rubric: Business information systems Authors: Kapulin D., Vinnichenko D., Vinnichenko M. |
The work discusses the features of network planning and management of small-scale discrete manufacturing.
The main aim of the development of network planning algorithm and its implementation
in the automated planning system is to create of the calendar production schedule and make possible
its dynamical adjustment. The calendar production schedule is characterized by frequent transferences
of work, the starting and ending terms, the emergence of new jobs (orders) within the production
cycle etc… Automation of network planning and management processes should be carried out by
the solution of the complex interdependent tasks connected with both reengineering of current planning
processes and network adaptation algorithms for a specific production type and their further program
implementation. The requirements to the content of the information support for the automation
of the Gantt chart construction on the base of network models and the requirements to the appropriate
software product which takes into account features of electronic small scale production. The software
architecture is offered on the base of the executed analysis and the system of automated planning
small-scale production of the electronic equipment is tested. The system makes possible the dynamic
adjustment of the production plan.
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