Journal archive

Publication is devoted to dynamic modeling of economical systems. During working out of dynamic models by methods of information modeling and the system analysis the general algorithms of their construction have been defined and analogies to economic laws are drawn. With the help of CAD ADS Agilent Technologies resources it is became possible to make calculations for hierarchical and interfering systems.

We consider organizational problems faced by big industrial companies. Such problems force and stimulate companies to transition on new corporate IS. Special attention is payed to the importance of first phases for IS implementation — screening of business activity, creating of a new IS conception, forming strategy of implementation.

Decompilation is a means used in reverse engineering for raising of analyzed system’s abstraction level. Obtaining understandable reconstructed program is an important goal in this case. The most comprehensive restoration of high-level control flow structures is relevant to achieving this goal. This article is devoted to certain methods for decompilation of C++ programs, notably methods for reconstruction of C++ try-catch constructs used for exception handling and throw statement used for raising exceptional situations.

Semantic network is an information model of knowledge domain. Objects and their relations are specified with a graph. An object of visualization is a subnetwork induced by a set of relations incident to the selected objects. A method for construction of a compact subnetwork layout is presented. It is guaranteed to avoid link crossings and label overlaps for objects and relations.

Article is devoted the decision of a problem of automatic construction of layers of breed of a vertical cut. The work is devoted to the algorithm of construction of the polygons describing layers of breed with identical stratigraphy (age) of a vertical flat section according to data, received as a result of well-drilling for geological prospecting of kimberlite pipe.

Now to environmental problems the steadfast attention is paid. There is a necessity of creation of geoinformation system of the ecological monitoring, allowing to carry out procedures of visualisation and calculation of values of concentration of polluting substances. The mathematical model, algorithmic maintenance of system and toolkit for an application programming is presented. The hardware concept of system functioning is chosen.

The paper aims to review traffic podcasting approaches for wireless mesh networks. The main characteristics for wireless self-managed networks showed and comparison with wired networks is presented Different approaches like wavelet analysis, time series analysis, flow clustering, graph- and process-mining are considered. Advantages and disadvantages are discussed.

The mathematical means of the R-functions theory appeared rather convenient for exposition of fractal geometry objects with the help of the functions (x) = 0, x∈E n, where (x) is the uniform analytical expression. Thus the following constructive tools have been used: R-functions of a {R0} system; a superposition of (x, y) function with the periodic functions, permitting to translate the given function along axes with a step hx and hy, and along a circle of radius R for n times; property of a similarity of the figures circumscribed by the equations (x, y) = 0 and 1 0 K Kx,Ky, where K is the similarity factor. In this work only some, most known objects of fractal geometry are constructed, as for example, a Sierpinski carpet and napkin, Kokh curve, snowflake, cross, etc.

At studying within the limits of various disciplines of imitating modelling, and also in practice of creation of models inevitably there is a question on a choice of the environment of working out, adequacy of systems of modelling. In article on in details developed and realized means GPSS World and AnyLogic models of objects with diverse processes proceeding in them show adequacy GPSS World and AnyLogic concerning results of modelling. As application GPSS World (and previous versions) unlike AnyLogic has old distribution, in article on examples modelling techniques in AnyLogic are in detail stated.

It was demonstrated that at the choice of the best of the built variants of regression model the orientation is only to the value of coefficient of determination and Fcriterion can’t warrant obtaining of minimal error of forecast of response function. For comparative assessment of quality of obtained variants of regression equation was demonstrated the opportunity of usage of developed program systems which allow at minimum labour costs to build imitation models, to carry out imitation modeling, to estimate statistic characteristics of response function (expectation value, dispersion, coefficient of variation of excess, unbalance and character of distribution) at various values of errors of covariates and different structure of regression model. Knowing the character of allocation of response function, we can estimate the probability of that the response function will be found within the prescribed limits. As an example related to the solution of real applied problem it is demonstrated that depending on the structure of regression equation and accuracy of measurement or fixation of covariates the value of response function error can vary over a wide range.

Article is devoted questions of adaptive management of the financially-managing subject concerning processes of transport type. In article the transport model which parameters by means of the developed algorithms are adjusted by positive experience of decisionmaking is considered. With the help of computer simulation experiment investigates the properties of such models as the approximation of the experience of the DM, and properties of the solutions obtained by this model in new situations.

The efficient information-gathering system is a crucial point for control procedures implementation. Developing the monitoring environment assumes that the performance parameters of the system to be built must be evaluated beforehand. The application-oriented models suit suggested in the paper may support this task.

In article two models are considered: Statistical model; The model constructed on a neural network of reverse propagation. In article the description of models, the comparative characteristic of models are resulted at the decision of the task of forecasting of sales in the insurance company. The software solution created on the basis of given models is described.

The article presents the results of the study concretized technology (vertically) integrated production. In contrast to the generalized model for assessing cost-effectiveness of technologically integrated production system, developed by the author to specify the models introduced a coefficient of technological change, specified additional costs, using the value of unit costs and selling prices the finished marketable products.

The numerical estimations of functions of sensitivity of probability of destruction from a variation of statistical parameters load capacity and fatigue properties of a material with reference to bearing details spindle connections of a drive of the rolling mill are presented, their analysis and the proved recommendations are resulted. the methodology and a complex of computer programs allow to formulate requirements to parametres of technological process, to properties of a material and manufacturing techniques of details, and also to load capacity and to the service conditions of the equipment providing their set resource.