Abstract In clause the mathematical model of process of cutting of a ground is considered by a direct knife of a scraper. Dependence of resistance to cutting is established depending on physic mechanical properties of a ground, conditions of process of digging and geometrical parameters of working body. The submitted mathematical model is used at system engineering the automated modeling process of digging of a ground by a scraper.
Keywords mathematical model, process of cutting of a ground, physic mechanical properties of a ground
Abstract In article the analysis of the reasons of heating of the under frame of an aircraft is given. Direct dependence of quantity in contact a piece of heat from the area of actual contact piece and arguments of a roughness of covering Runway is deduced. The formula for definition of the thermal stream arriving from the under frame in a covering is deduced, values of factor egress of heat the chassis results of calculation of value of the full thermal stream arriving at contact piece in the under frame are resulted in a covering and values of factor of quantity of heat. Recommendations about definition of the maximum temperature of chassis an aircraft are made.
Keywords aircraft, runway, aerodrome pavement, roughness of pavement, heating of pavement
Abstract The article presents a calculation method of a distance between surface inlets of an under-ground storm drain system and culvert aque-ducts of a surface storm drain system. The given method allows taking into account the most im-portant properties of city roads and streets (speed and traffic safety), as well as the type of the pavement according to its roughness and geometrical parameters of traffic lanes. Recommendations on application of the types of storm drain systems are offered in the paper.
Keywords distance between storm-water inlets, storm drain system, depth of storm runoff, culvert aqueduct, surface inlets, parameters of pavement roughness.
Abstract The article provides the analysis of use computer-aided design system at wood highways. Introduction by computer-aided design system help to synthesize a design of road in a dialogue mode from the computer.
Abstract In article the building technology with use of a fixed timbering and technological features of application of the given method is considered. Advantages and lacks of a fixed timbering are resulted from the point of view of automated management by process of keeping and the control of a condition of a concrete mix. In the conclusion the basic directions of researches for effective and wider application of the given technology are resulted.
Keywords monolithic construction, fixed timbering, expanded polystyrene, keeping of concrete.
Abstract This article is devoted to practical aspects of discounting procedure application for interest rate risk measurement. The target of this research is to obtain a motivated and optimal option choice of discounting rate. Within this article a comparative analysis of commonly used variants of discounting rates is performed in detail, describing strengths and weaknesses of each approach. In the conclusion the optimal option is selected based on criteria defined by the author.
Abstract In this article is given a survey of mechanical engineering of Russia and its state in the condi-tions of the global financial crisis. There is suggested the mechanism of state support of development of mechanical engineering with the help of the project financing. There is given a definition of a project financing. There is given an assess of macro economical effect of mechanical engineering's development with more progressive rates in result of the project financing's realization.
Keywords project management, mechanical engineering, project financing, state subsidies, international financial crisis.
Abstract In the article substantiated recommendations for forming of passenger automobile transport regular routes property complex economical use mechanism, including systematization of principles and forms abovementioned mechanism, their classification by functions and duration. Considered lease and concession agreements as ways of investment mobilization and budget reduce spending for objects maintenance and reconstruction.
Abstract In article the complex of programs of reception, the analysis and display of the information. Complex has allowed to formulate the basic postulates described before the theory of equilibrium dynamic systems as formal analogue of real market relations. The mechanisms of decision-making and the strategy developed on their basis also have been realized by a described program complex. As check of adequacy of the developed theory and strategy of decision-making the complex includes the program "Player" which is carrying out automatic trading activity which shows positive balance on the real data.
Keywords market mechanisms, decision-making, strategy, program complex, client, server.
Authors: E.Galyamova, A. Karpenko, N. Sokolov, G. Yagudaev
Abstract The paper discusses evaluation of conceptual knowledge of a subject taught by intellectual learning computer system whose knowledge database is built on semantic networks. Cognitive maps are used to formalize the conceptual knowledge of a subject about the studied discipline.
Abstract The paper is devoted to the concrete structure analysis with respect of crack origin, detachment of reinforcement from concrete and other material feature like non-linearity and contrast in compression and tension behaviour. It is propose to use the interface elements, which allow to evaluate the stress-strain state of structure with respect of crack origin. The example of reinforced concrete beam analysis is produced.
Authors: A. Buslaev, O. Zamotailov, P. Pospelov, M. Yashina
Abstract Authors have created technology that allows to get image of pavement, GPS-coordinates and subsurface radarogram from georadar OKO-2 simultaneously. Therefore in real time and fixed regime under notebook control the information about road pavement of different nature is generated and is intent for future use in statistical procceding and automatic recognition.
Abstract This article shows estimation results of summary harm (ecological damage) to the environment caused by automobile transport and region road facilities. Also the article gives measures grounds for decreasing road transport negative impact on the environment to the safe level.
Abstract In article the problems arising at use of algorithms, parameters spending optimization traffic control in real time are considered. The technique of construction of imitating model of adjustable crossing in the environment of Matlab is resulted.
Keywords regulation of traffic lights, imitating model, time discretization.