articles
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The author describes process-oriented simulation of queues with Excel. This method does not
require writing code in a programming language and is the most easy to understand, because the
whole history of the entities is reflected in one line. Modeling of the following queuing systems:
single-channel system with a queue, a two-channel system with unlimited waiting, single-channel
system with time-limited expectation, a system with group service entities, and system with batch
arrival of entities. The paper considers the mechanism of phase modeling and re-modeling in the
specified number of random realizations. For the simulation of random realizations were used cyclic
table cell, which act as storage. When considering a staged simulation, the receipt of each application
is modeling with the click of a button. The article describes the construction of graphs
to illustrate the progress of the simulation: device service requests, queue length, system state.
For their construction were used scatter plot and bar charts. The article may be useful for readers, who
want to create basic models of queues systems using spreadsheets. The presented models can be using
to teach the basics of simulation, as well as demonstration material in lectures.
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№ 6(60)
30 december 2015 year
Rubric: Theory and practice Authors: Matorin S., Zaitseva N., Zhiharev A. |
The article discusses the importance of the development of methods and simulation tools, primarily
by converting visual (graphic-analytical) organizational and business models and production processes.
It describes the basic concepts and formalisms for system-object approach «Unit-Function-
Object» (UFO-approach) and the system-object methods of knowledge representation (SOMKR) using
the apparatus of algebraic of the patterns theory Grenander, calculus processes Milner and calculus
objects Abadi-Kardelj. Substantiates the prospects of the use of these funds for the creation of new
methods of simulation. We present two methods of simulation using the system-object approach «Unit-
Function-Object». Firstly, by formalizing the system-object graphical-analytical models of knowledge
of business processes by means of algebraic calculation objects and, secondly, by converting the visual
system-object models to describe them in the language of the simulation of production processes
«CHI» (c). The results suggest the possibility and feasibility of simulation tools using in the based
UFO-approach, which is implemented in the new version of software tools UFO-toolkit, automates
the procedure described in the article modeling.
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№ 6(60)
30 december 2015 year
Rubric: Researching of processes and systems Authors: Dli M. I., Belozerskij A., Stoyanova O. V. |
The projects of creation and organization the high-technology industrial products production include
interrelated tasks (activities) of envisioning, planning, design and developing. Such projects have several
specifics, such as different structural relationships between activities, high level of information
uncertainty and large amount of controlled parameters. The quantity of these parameters depends on
external factors and internal connections of the project. The described peculiarities determine the necessity
of modifying of widely practiced project management formal methods and models. The article
describes requirements to project models, on which the proposed method of model creation is based.
The method includes the following stages: the decomposition of the project to subprojects; the creation
of network models of the subprojects; the creation of the model that consists of activities belonging
to different subprojects and having common input/output connections; the identification of the project
goals with the help of indicators. The indicators may be of different types: quantitative (point ant
interval estimations) and qualitative. The indicators for each goal-oriented project state are integrated
with the use of proposed algorithm and form the project trajectory. The considered model makes possible
to estimate the project trajectory in various time points. As a result the project management becomes
stable under uncertainty.
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The methodical bases of the information sciences are considered, included terminological base and
the problem of the information concept definition. The classification questions of the informatics and
metaphorical understanding information analysis in the evolution biophysics («bioinformatics») are
considered also. Discipline, which have claim on special information science role, in really to appear
«sciences» about digital information technologies in different directions of sciences, technics and economy.
They gain all-sciences knowledge role and integrated common-education discipline role through
assimilation of part of the origin science to digital information technologies. Together with logic-semiotic
and mathematical methods in social-economics information directions used own info-logic
model method. The communication mathematical theory of C. Shannon to find own application for
the most part in technical sphere. In real time theoretical base do not exist, which common to all information
sciences (used functional definitions or attributive definitions), excepting well known theory
three universes of C. Popper and environment conception by K. K. Kolin, which develop theory
three universes of C. Popper. The common theoretical bases of any information sciences is consider.
That analysis has important to classification of informatics, which based on the origin importance and
based on the metaphorical importance.
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№ 6(60)
30 december 2015 year
Rubric: Methodology of science Authors: Bolotova L. S., Danchul А., Nikishina A., Novikov A., Surkhaev M. |
This article is devoted to a problem of creation of the program systems (PS) organizing the information
search (IS), and providing high rates of efficiency for the mass user (not the expert in the field of
informational technologies). Researches weren’t limited by the review of achievements in practice of
creation PS_IS, and also in the corresponding scientific and engineering disciplines. The subject of researches
is the process of achievement of mutual understanding in communication between two subjects.
Such researches completely correspond to the character of researches in the scientific direction of artificial
intellect. It points out the essence which allocates from the process of communication between subjects,
and it is explained the concept corresponding to it and it is offered to call «initial identification».
Consideration of process of initial identification allowed to reveal the main contradiction in a problem
of creation PS_IS. In the process of communication (and respectively in IS) the subject operates with all
known set of concepts and uses thus as gained recognition (simple or compound) names of concepts, and
the names formed directly in the course of communication. However in a natural language only 83.000
concepts are called by simple unique names (in a word). Compound names called incomparably more
concepts, they make only insignificant part of concepts with which the subject operates in communication.
Thus, the dominating part of algorithms of II is connected with application of quickly named concepts.
It is shown that process of an operational name is feasible only with use of the model of knowledge
approached to gnoseological model. And it is also specified that after some time in computer systems
emergence of such models of knowledge is possible.
For the new technology of IS the organization of access of each concrete tag of a concrete concept
to its names in base of names is offered. That makes a basis of the organization of base of simple
and compound names. Also other characteristics of the organization of the dictionary at triune essence
are provided.
Such concept as»construction of sentence» is offered for a broad use in scientific practice interpretation
of which corresponds to interpretation of the concept «sense of the sentence» with explanations,
which allow to draw sense from sequence of alphanumeric symbols.
A great place in this work takes consideration of algorithms of formation and recognition of sentences
(that is II). Many situations of II suspension are revealed and described. It is noted that completeness
of such situations, and also algorithms of permission of the concrete situations and scenarios
of interactive interaction providing finishing II up to the end make the essence of works on formation
of the specification on design of PS realizing new technology of IS.
In conclusion it is pointed out that the declared subject due to its scale can’t be opened in one article in
details (scrupulously) to conform to requirements to the specification on creation of II. It is important that
the complete picture of new technology of IS is given in article and feasibility of such technology is shown.
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Despite the declared Russia’s retreat from the resource model, the dynamics of oil prices continues
to define the development of the oil and all its associated sectors of the national economy. In this regard,
the importance of the development and use of effective tools of interaction of participants of the
technological chain of the enterprises of the oil sector, including at the stage of realization of oil and
oil products. This article discusses the use of electronic technology trading andpurchasing activities
creating conditions for equal access of producers to markets providing additional services on the organization
of calculations with the reduction of the chain of intermediaries. Presents conceptual aspects
of formation of information and communicative space of e-Commerce enterprises of the oil industry
on the basis of the kinds of market transactions based on electronic trading platforms. It is shown that
the use of electronic trading platforms provides additional benefits associated with the simplification
of the procedures for participation in tenders, tracking the status of the relations of the parties to the
transaction, risk reduction, depending on the control of prices by speculators. The authors have developed
a scheme of interaction of participants of electronic trading platforms at various stages of the
transaction of purchase and sale. The decisionof problems of management of internal business processes
in support of electronic trading platforms offered on the basis of Microsoft Dynamics NAV
and Directum. Management of data exchange in Microsoft Dynamics NAV and Directumis proposed
based on the use of XML. It is concluded that the use of electronic trading platforms in the oil sector
contributes to the formation and implementation of unified policy in the sphere of placement of orders,
and increases the efficiency of interaction of the oil companies with the external environment.
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