Systems and Means of Informatics scientific journal
Volume 22, Issue 1, 2012
DEVELOPMENT OF SOFTWARE TOOLS FOR ANALYSIS OF NONLINEARMULTICHANNEL STOCHASTIC SYSTEMS.
Abstract: The methodological aspects of the advanced software tools "CStS-ANALYSIS" for the analysis of nonlinear multichannel circular stochastic systems are discussed. The testing examples are given.
Keywords: analytical modeling; circular random variable; circular stochastic process; coefficients of circular orthogonal expansions; "CStS-ANALYSIS"; MATLAB, nonlinear multichannel stochastic system; one- and multidimensional densities; circular orthogonal expansion; standard density; wrapped normal density
PERSONIFIED TRANSFORMATION OF COLOR IMAGES PRESENTATIONS ON A PC MONITOR .
Abstract: The method used to increase the accuracy of hue reproduced in polygraphy is based on application of equicontrast graded transformation of hue scales in color space of \standard" observer. A similar problem is considered for the color space of arbitrary personal computer user in case of color representation to computer monitor. The proposed method is based on application of personified graded equicontrast transformation of hue scales. The examples to illustrate the efficiency of the method are provided.
Keywords: hue reproducing; contrast; gradation; hue scales; equicontrast graded transformation
TOOLS FOR SELF-TIMED CELLS CHARACTERIZATION.
Abstract: A procedure for characterization of the standard cells (extraction of time and electrical parameters for creating functional model) intended for self-timed circuit design is presented. It is shown that specific behavior of self-timed circuits additionally constrains characterization process as well as leads to changing the values of some parameters of a cell model. A software tool for standard cell characterization and the results of its beta testing are described.
Keywords: self-timed cells; characterization; functional model; software tools
EXCEPTIONS FIXATION IN RECURRENT DATAFLOW PROCESSOR.
Abstract: The problems related to fixation and handling of exceptions in the multicore dataflow computing system are identified. Possible variants of exceptions detection and debugging information generation for its transfer on processing are analyzed. The principles of fixation logic creation and exceptions handling, applicable for all kinds of computing systems, are formulated.
Keywords: exceptions; interrupt requests; dataflow architecture; recurrence
HIERARCHICAL METHOD OF THE ANALYSIS OF SPEED-INDEPENDENT ELECTRONIC CIRCUITS.
Abstract: Development and implementation of speed-independent circuits possessing unique properties are largely discouraged by design difficulties, in particular, the analysis for speed-independence of "large" circuits. A method of the analysis of circuits of unlimited size based on the functional approach is suggested. In the literature, such approach and method are not observed, and the method is proposed here for the first time.
Keywords: speed-independent circuits; self-timed circuits; analysis for speed-independence
THE FAULT TOLERANCE INCREASING OF CACHE-MEMORY DATA BY THEIR REFRESHING.
Abstract: For reducing vulnerability to transient failures of cache-memory data, a refresh method is suggested. The data refreshing planning is based on the applications code analysis at compilation stage. The method is applicable to linked data structures that is shown on arrays and nested structures. The data refresh planning is demonstrated by an example of the matrix multiplication program.
Keywords: microprocessor systems; cache-memory data; vulnerability to transient failures; linked data structures
LEXICAL SEMANTICS MODELING IN THE TASKS OF COMPUTATIONAL LINGUISTICS.
Abstract: An analytical review of lexical and semantic methods, their examples, and spheres of application is presented. Among the considered articles, those published in the 2009 and 2011 Proceedings of The World Congress in Computer Science, Computer Engineering, and Applied Computing were chosen.
Keywords: lexical and semantic methods; computational linguistics; text data processing
Program-oriented indicators: Production and application in science.
Abstract: The results of the project, whose goal is to create a tool for developing sets of indicators for monitoring and evaluating research and developments (R&D) program activities are presented. Each set of developed science and technology (S&T) indicators is oriented at the assessment of only one R&D program, i.e., at its objectives, resources, and results. The tool for developing indicators is being designed as an experts knowledge base named the proactive dictionary, which is the component of the evaluation system. This component enables experts to fix stages of indicators development, to present the results of developing different variants of indicators in graphic form, to compare and evaluate those variants, which are oriented at objectives, resources, and results of R&D program activities. The paper describes two theoretical models of the process of indicators development. It also describes a prototype of the proactive dictionary created on the base of these models. Finally, it describes the results of an experiment of development of a set of indicators by a group of the experts.
Keywords: processes of experts' knowledge creation about indicators; knowledge representation about indicators; semiotic models; program-oriented indicators; indicator denotata
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