ISSN 1991-2927
 

ACP № 1 (55) 2019

Author: "Vasilii Grigorevich Litvin"

Vasilii Grigorevich Litvin, JSC “Research Institute for Automatic Apparatus named after Academician V.S. Semenikhin”, Doctor of Engineering, Professor, Chief Staff Scientist at JSC “Research Institute for Automatic Apparatus named after Academician V.S. Semenikhin”; graduated from Taganrog Radiotechnical Institute; finished his post-graduate studies at the Institute of Control Sciences of Russian Academy of Science; an author of 117 scientific papers in the field of computing systems performance evaluation. [e-mail: litvg@mail.ru]V. Litvin,

Aleksandr Anatolevich Musatov, JSC “Research Institute for Automatic Apparatus named after Academician V.S. Semenikhin”, Head of the Scientific-and-Technical Centre of JSC “Research Institute for Automatic Apparatus named after Academician V.S. Semenikhin”; graduated from Moscow Aviation Institute; an author of articles in the field of designing information computation systems. [e-mail: a_musatov@mail.ru]A. Musatov,

Iurii Vasilevich Litvin, Department of LCC NIIGAZECONOMICA at JSC “Gazprom”, Candidate of Economics; Head of the Department of LCC NIIGAZECONOMICA at JSC “Gazprom”; graduated from Moscow Engineering and Physics Institute; an author of 31 scientific papers in the field of risk assessment of organizational and technical systems. [e-mail: litvinj@simplecs.ru]I. Litvin

Defining Requirements for the Time of Query Execution By Real-time System Components With the Use of Bootstrap Methods 000_5.pdf

A new approach to definition of requirements for the time of query execution by real-time system at initial design stages is offered. The current system refers to the class of real-time systems with soft requirements for the response time. The initial prerequisite for the assessment of query execution time are the customer’s requirements for the system response time and the expert analysis data. The requirements for the time of query execution by the separate components are determined as mean values with the use of the bootstrap method. The developed approach application is illustrated by the simple numerical example.

Requirements management, real-time systems, expert methods, simulation, bootstrap method.

2015_ 3

Sections: Information systems

Subjects: Information systems, Automated control systems, Architecture of ship's system.


Oleg Ivanovich Elizarov, Research Institute for Automatic Equipment named after Academician V.S. Semenikhin, Candidate of Engineering, Senior Researcher, a head of the Department of the Research Institute for Automatic Equipment named after Academician V.S. Semenikhin; graduated from the Bauman Moscow State Technical University and Lomonosov Moscow State University; an author of articles in the field of design and an effective computational process organization for information systems. [e-mail: eoi251139@rambler.ru]O. Elizarov,

Vasiliy Grigoryevich Litvin, Research Institute for Automatic Equipment named after Academician V.S. Semenikhin, Doctor of Engineering, Professor, Chief Staff Scientist at the Research Institute for Automatic Equipment named after Academician V.S. Semenikhin; graduated from the Taganrog Radio-Engineering Institute; an author of 115 scientific publications in the field of computing systems performance. [e-mail: litvg@mail.ru]V. Litvin,

Elena Viktorovna Сhernyshova, Research Institute for Automatic Equipment named after Academician V.S. Semenikhin, Candidate of Engineering; a chief of Scientific and Engineering Centre at the Research Institute for Automatic Equipment named after Academician V.S. Semenikhin; graduated from Moscow Power Institute (Technical University), Institute of Power Efficiency Problems and Executive MBA; an author of articles in the field of design and efficient use of computing systems. [e-mail: dibs@list.ru]E. Сhernyshova

Foundation for Program Run Time Requirements in Computer Systems 35_10.pdf

One of the important problems in computer systems design is the efficient requirement engineering. Therefore, along with the system creation for documentary support of appropriate processes, evaluation tools for program run time requirements play the important role. The article deals with analytical evaluation procedure for the requirements based on the stochastic models for the queueing systems and queueing networks (QS and QN). The explicit formulas for calculating mean time required for program implementation and the time required for program implementation with the set level of confidence are given for the QS-models. The engineering estimation method based on the dependences of QN operational analysis and the iteration algorithm for calculation of required time (Mean-Value Analysis - MVA) are presented for the QN-models. The examples showing the application of proposed methods for dynamic run time requirements estimation are considered. The accuracy was estimated by comparison of results of analytical calculations against results of Monte Carlo simulations. The proposed methods can be used at all stages of computer systems life cycle.

Mva, software requirements, software requirements engineering, computer system performance, operational analysis, mva.

2014_ 1

Sections: Information systems

Subjects: Information systems.


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