Roman Pasichnyk

Modeling Dynamics of Microorganisms Systems under Uncertainty

In the present study models of batch microorganisms systems dynamics under uncertainty conditions are considered. This study describes approaches to setting initial guess for parameter values and identifying autonomous and thermal-controlled systems.

Semantic WEB-Search Developing by Problem-Oriented Ontology Means

A paper presents the ontology creation procedure. The informally description of semantic search is considered, and the UML sequence diagram is implemented as a tool of general solving problem method description. The general structure of semantic search supporting is formed and some principles of followed ontology method formalization are proposed.

Method of adaptive control structure learning based on model of test's complexity

Method of adaptive control structure learning, which provides significant cost savings in time without loss of learning effectiveness are proposed in this article.

Model of pollution on the local section of an urban highway and its identification method

The problem of constructing a dynamic model of pollution of a typical element of urban infrastructure is considered. The model of pollution in the form of an ordinary differential equation is proposed, which is identified by means of difference expressions with subsequent refinement using gradient methods. Numeric experiments confirm the effectiveness of the proposed approach.

Mathematical models of websites attendance and methods of its improvement

In the article the growth patterns of attendance Website at an increase its content involve with some copywriter. Experiments were conducted to identify these models. It allowed to structure an adequate model for forecasting in general and targeted traffic, based on analysis of the characteristics of business processes object that this site represents.

Ontology's structuring based on the evolutional sequences and the preparation method of its filling

A paper presents the ontology creation approach, based on evolutional sequences. The universal system of accumulation of the applied scientific knowledge is proposed. The method of compression of text content also is discussed.

First American-Ukrainian School of Computer Sciences and Technologies: Reality and Perspective

The problems of American-Ukrainian School of Computer Sciences establishment are discussed in this paper.

Projects selection model in venture investments

Here, decision model of expedience financing venture projects is considered. Simple statistic model and its program are built. An example of using this program is given. Its marked that parameters of the model may be specified by data of the practice investing