optimization

The analysis of movement modes of cam mechanisms is carried out. The technique of optimum movement modes synthesis is proposed; it allows to receive any modes which reflect certain properties of a cam mechanism. Complex optimum movement modes which simultaneously take into consideration several properties of cam mechanisms are most promising. Such optimum movement modes can be received on the basis of complex criteria taking into account optimum movement modes of cam mechanisms by single integrated criteria.

The paper deals with the methods of calculation and optimization of constructions of  the impact dynamic vibration absorbers (DVA ) for the elongated structures.  An efficient numerical approach based on the theoretical-experimental method is proposed to maximize the minimal damping of modes in a prescribed frequency range for the tuned-mass impact systems. Methods of decomposition and numerical synthesis are considered on the basis of an adaptive schemes. The influence of dynamic vibration absorbers and basic design elastic and damping properties is under discussion.

The problems of organization and support management in organizations that implement their activities in the form of projects were considered, as well as the main approaches to managing a portfolio of projects, two-step procedure for drawing portfolio, taking into account both formal and informal aspects was proposed.

The article describes the design features of ranking websites in the global Internet, the analysis of the known systems and promotion resources was done and the internal and external factors of ranking were given. Possible schemes of Internet resources using the tools of link ranking were analyzed. We describe the main problems that arise when optimizing pages on the set of queries and give the scheme of splitting by keyword pages of the resource.

Problems of organization, planning and maintenance management in organizations that implement their activity in the form of projects are considered. The critical analysis of the operation in this environment was carried out, major shortcomings and methods of overcoming them are pointed out.

This paper belongs to the field of systems engineering and is aimed at improving the qualitative indices of information technologies or systems with multidimensional characteristics (e.g. vector data coding design) with respect to reliability, precision and other significant operating characteristics of the systems based on the combinatorial configurations theory, namely the principle of optimal cyclic proportions (OCP).

In the paper considered the models of project portfolio’s formation and the allocation of resources between the portfolio projects under uncertainty, their advantages and disadvantages, the impact of organizational structures and modern software development technologies to reduce the uncertainty level, substantiated the necessity to use imitation to obtain decisions on planning in multi-project environment, offered structure of the simulation model.

This paper belongs to the field of systems engineering and is aimed at improving the qualitative indices of vector data information technologies (e.g. 2D vector data coding design) with respect to reliability, precision and other significant operating characteristics of the systems based on the combinatorial configurations theory, namely the Ideal Ring Bundles (IRB)s.

The article features revealed pricing for machine building products. The general approach to modeling the process of pricing for machine building products within the parameters of the demand for goods produced using this product. The building model performance optimization criterion prices and volumes of sales machine building company. Established the possibility of using performance optimization criterion prices for machine building  products to address the task of selecting the best varieties of products.

A bee colony optimization algorithm and its modifications as a way to solve the complex combinatorial optimization problems are described. Biological basis, advantages, disadvantages and usage of this method are studied.