×

You are using an outdated browser Internet Explorer. It does not support some functions of the site.

Recommend that you install one of the following browsers: Firefox, Opera or Chrome.

Contacts:

+7 961 270-60-01
ivdon3@bk.ru

  • The theory and practice of developing energy effective household refrigeration equipment operating at extreme high ambient temperatures

    The main maintenance of a diversification of production as activity of subjects of managing is considered. being shown in purchase of the operating enterprises, the organizations of the new enterprises, redistribution of investments in interests of the organization and development of new production on available floor spaces. The most important organizational economic targets of a diversification of management are presented by innovative activity of the industrial enterprise.

    Keywords: Герметичный компрессор объемного действия, система охлаждения, холодопроизводительность, перегрев, холодильный коэффициент COP, энергоэффективность.

  • The paper considers the comparison of power consumption of Two’s Complement System and Residue Number System for digital signal processing applications. The comparison of these two implementations allows to conclude that, for these applications, the RNS uses less power than the TCS counterpart. The aim of the present paper is to highlight the reasons of this power consumption reduction.

    Keywords: residue number system, digital signal processing

  • A new device for receiving surface runoff to wastewater network

    A new device was made to catch and receive surface runoff to sewerage system. The device increases wastewater flow and velocity in the wastewater networks which is provided by flushing and reducing decay of organic and inorganic substances in the networks.  

    Keywords: Device, surface runoff, flow, flushing, siltation

  • Principles of risk management system of investment and construction projects urban territoties development

    The article is devoted to the formation of scientific and methodological basis of socio -ecological and socio-economic risks that arise in urban areas in the process of realization investment and construction projects for the development of the urban environment. The authors identified the contradictions economic substantiation of development projects of territorial development and socio- environmental factors, the adverse effects of their realization, on the basis of which concluded the need for modernization of the basic principles of risk management for sustainable development of urban territories . The article proposes a set of principles that are required for the formation of an effective system of risk management of investment and construction projects of development of urban territories, which includes five interrelated principles : the principle of the matter of feasibility activity, the principle of optimization of protection, the principle of an integrated estimation of the danger, the principle of ecosystem sustainability, the principle of "the polluter pays". The proposed principles will gain the efficiency of the analysis and selection of projects for realization only able to provide the highest level of security and stability of the socio- economic sector of the city.  

    Keywords: principle, the system of governance, risk, investment and construction projects, urban territories, sustainable development, social and environmental security

  • Influence of the number of old asphalt and technology of its submission on the properties of the prepared asphalt mixes

    The influence of the amount of the addition асфальтогранулята on the properties of asphalt mixes and asphalt. Also considered is the impact of technology of filing асфальтогранулята on physical-mechanical properties of asphalt mixes.

    Keywords: old asphalt, asphalt, astringent, physico-mechanical properties, homogeneity.

  • Implementation and comparison of different versions of the Uzawa algorithm in elasticity problems for incompressible materials

    2-D and 3-D problems of the elasticity problems for incompressible materials are considered. Solving these problems using the finite-element method results in solving the linear algebraic equations system with sparse matrix. For incompressible materials this system is the system with a saddle point (i.e. the matrix eigen values have different signs). Thus, applying such solving methods as the conjugate gradient method and the generalized minimal residual method is impossible. Uzawa method is suggested to be used for such problems. It is an iterative process, and at each iteration it is necessary to solve the linear algebraic equations system, but this system is without a saddle point. The different variants of Uzawa algorithm are realized within CAE Fidesys software package, and their efficiency is compared in the article.

    Keywords: theory of elasticity, incompressible materials, finite-element method, Uzawa algorithm, iteration methods for systems of linear algebraic equations

  • Механизмы идентификации точек контакта с клиентом как инструмент повышения степени удовлетворенности качеством предоставляемой услуги

    В данной статье приводятся примеры стандартных и не стандартных точек контакта с потенциальными клиентами, описаны механизмы их выявления, а также приведены примеры из практического опыта работы авторов по данной теме. Дано определение понятию «клиентоориентированнсть» с точки зрения клиента, и предложены варианты, где применима данная стратегия. Поднят вопрос о качестве обслуживания и что стоит за этим пониманием для клиента, чего он ждет от сферы услуг и на что рассчитывает. В статье рассмотрены этапы анализа точек контакта, приведены примеры влияния этих точек на формирование лояльного отношения клиента к качеству услуг. 

    Keywords: услуга, точки контакт, идентификация, стратегия, анализ, клиент, потребитель, контакт, точки взаимодействия, ориентация на клиента

  • Use of methods of optimum stochastic control for the solution of a problem of initial orientation of the inertial navigation system at diagnostics of a transport and operational road condition

    The problem of synthesis of management by spatial orientation of GSP realized in real scale, its spatial situation providing high-precision definition in conditions of action of hindrances is considered.

    Keywords: the inertial navigation system, the gyrostabilized platform, optimum control

  • Renumbering effectiveness for finite element mesh applied to finite element method for solving three-dimensional problems of solid mechanics

    This paper presents a comparative analysis of the effectiveness of the method Cuthill-McKee algorithm and fill-reducing ordering of a sparse matrix, based on multi-level nested dissection paradigm, developed at the Department of "Computer Science and Engineering," University of Minnesota. For short, we shall call the algorithm Cuthill-McKee CM, and the algorithm of the University of Minnesota — NodeND (Node nested dissection). This article uses a modification of the CM algorithm — RCM (reverse Cuthill-McKee), because in practice the reverse numbering index allows you to get a greater advantage than using a direct algorithm CM. The reason for using these algorithms are high speed computational algorithm, as it is necessary to solve the system proximal to the diagonal, the great acceleration of algorithms for solving FE problems using technology such as CUDA  

    Keywords: finite element mesh renumbering methods, three-dimensional mathematical modeling, elasticity theory problems, finite element method, finite element meshes

  • Analysis of the processes of foreign studies forestry road trains

    the analysis of foreign researches, which consist of processes of functioning timber lorries is given. Decrease transport expenses with minimization of empty run of timber lorries and formations of rational structure of this park has been proved.

    Keywords: timber lorries, functioning

  • Information supporting of the company's development strategy

    Problems of theoretical issues of information supporting of the company's development strategy mechanism forming are considered. Its structure and elements reveals. The theoretical justification for the planning of the information supporting of the development strategy system through the treatment of the parameters of the environment, strategic indicators and areas of strategic decisions interaction is held. Using the principle of activity continuation is considered from the point of view of the forming of the system of accounting, control and analytical supporting for the processes of strategic management, development, implementation and adjustment of the development strategy, evaluation of its performance. Attention is given to the working out and using in strategic accounting, control, analysis and forecasting of derivative balance sheets system. We consider the nature, value and structure of strategic derivative balance sheets, their possible use in information supporting of the company's development strategy.

    Keywords: strategy, strategic management, information supporting of the strategy, strategic accounting, derivative balance sheets, strategic derivative balance sheet, net assets, net sources.

  • Study of the catalytic ability of the nanosized catalysts based on CeO2 during catalytic reaction

    The nano-catalyst ceria (CeO2), activated by Pt nanoparticles, is known for being prospective and efficient material widely used in catalysis, fuel elements, and sensors. One of the most up-to-date methods of catalysts' reasearch is X-ray absorption spectroscopy (XAS) that is sensitive to the chemical state of catalyst's active centers [1,2]. Using XAS in the fluorescense detection mode at CeL1 line with high precision we studied electronic structure of Pt-activated nanoparticles of ceria at various redox conditions. In order to detect partial X-ray fluorescence yield the emission line CeLγ3 was used, which allowed us to increase spectral resolution. We researched local atomic and electronic structure of the materials under study. Oxygen vacansies were found to appear on the nanoparticles surface of ceria at 5% CO He atmosphere. Theoretical modeling of the obtained spectra at CeL1-edge demonstrated good agreement with experiment.

    Keywords: X-ray absorption spectroscopy, HERFD, XAS, Ce-based catalysts, oxygen vacansies

  • Prospects for the development of remote methods of the quality control of construction products by measurement

    The article presents the results of the analysis of the known methods of measuring the quality control of construction products. 
    Advantages of extending the scope of remote methods of the control by measurement including photogrammetry are listed. 
    Expediency of colour-texture analysis of surfaces at the quality control of construction products is substantiated.
    The field of rational application of colour-texture analysis at manufacturing supervision and field inspection of buildings and constructions is shown.  

    Keywords: building structures, product quality inspection, control by measurement, organoleptic inspection, methods of photogrammetry, colour texture analysis

  • Problems of modern higher educational institution and marketing methods of their identification and assessment

    This paper is devoted to research of the main problems of the external and internal environment of the Russian higher educational institutions in a modern economic situation. The methods, allowing to reveal and determine system effectiveness of management by university in aspect of marketing activity of higher educational institution are offered and proved

    Keywords: Competitiveness of higher education institution, marketing environment, external and internal environment of higher educational institution, marketing audit, remote monitoring

  • On the coefficient of prismatic strength of high-strength concrete

    This paper studies the dependence of the ratio of prismatic strength (Rb) from cube strength (R) for high-strength concrete of classes B70 ... B110. Experiments were carried on the concrete cubes with an edge of 150 mm and prisms with a base 150x150 mm and a height 600 mm. The tendency to reduce the ratio Rb / R with increasing strength of the concrete is founded. A new relationship Rb = f (R) is offered

    Keywords: high-strength concrete, physical experiment, prismatic strength, cube strength, the coefficient of the prismatic strength