This article is devoted to the analytical determination of deflections of beams with corrugated web. The reduced shear modulus which must be considered when determining the components deflection from of the shear strain in the beam with corrugated web is defined. Applying the energy method in the form of the Ritz, the problem of determining deflections with considering of bending strain and shear strain is solved. This article, as an example, is considered simply supported beam on both sides of constant and variable cross-section and are given to the final formulas according with three kinds of loading. The results of the calculation of the numerical examples for the three main shapes of corrugated web are submitted. Numerical results with great accuracy are consistent with calculations based on the finite element method.
Keywords: beams, corrugated web, energy, work, deflection, shear strain
Consider the use of management system of heating and ventilation plants in greenhouses, uniform distribution of heat and humidity in the area of biological objects, the use of an improved system of management regimes of the microclimate in the protected ground on the basis of programmable smart relays
Keywords: power consumption, temperature-humidity conditions, microclimate
New mathematical model of complex moving one axoid along another for the case of one-sheet hyperboloid of revolution as fixed and moving axoids has been proposed. On the base of this model analytical development and computer graphics of the new kinematic ruled surfaces are realized.
Keywords: Mathematical Modeling, Computer Graphics, Kinematic Surfaces
The article provides an example evaluation of the technical condition of building and handling machines in terms of corrosion resistance. Using functional method of determining the weights estimated sufficiency compositions anticorrosion treatment building and handling machines.
Keywords: The sufficiency condition, the generalized criterion, a metric multiplicative convolution operator on the set of individual criteria
At the present stage, energy-efficient construction is one of the important issues included in the legislation in most countries. One of the promising ways of lowering thermal energy demand for heating is to reduce heat losses with air exchange in buildings, which accounts for over 60% of heat loss.
Civilizational development of the society is only possible with the decrease in specific energy consumption and economical use of heat. The article discusses the main methods to improve energy performance of buildings under construction and operation. It also addressed issues of investment in energy efficiency projects. The article substantiates the effectiveness of the combined extract and input ventilation with heat recovery of vented emissions in Rostov- on-Don.
Keywords: energy conservation, improvement of the energy efficiency, efficiency assessment, investment, energy-saving measures.
Is considered a tool of marketing communications - personal selling. Describes the basic theoretical aspects of the system of integrated marketing communications, differences of classical and integrated complex of the promotion, analysis of a modern condition of integrated marketing communications. Allocated significance, main features, the uniqueness, the advantages and disadvantages of personal sales. Defined are the main differences between personal sales from the other instruments of the complex progress, as well as the identification of the characteristics of personal sales in the integration with other promotion tools of the marketing complex. Describes the use of personal sales, the system of integrated marketing communications. Allocation of the basic purposes and tasks of the personal sale in a complex of promotion and in integrated marketing communications.
Keywords: Complex promotion, marketing communication, integrated marketing communications, personal selling, personal contact
In the article the problems of color organizations of the urban environment and the value of professional skills of specialists working with color organization of the surrounding space. Volume of one article will not reliably accurately describe the problem and research in this area, more detailed information will be published in the monograph
Keywords: Color, colour modelling, color harmonization of environment, colorimeter, spectroscope.
Defined criteria for identification of defect parameters, on the basis of the analysis of the different modes of own fluctuations, with the use of finite element modal calculation console corpulent model of a rod with a single defect. Developed finite element model of a universal complex . Considered corpulent (3-d) model on the basis of 3D finite element Solid92. When solving the problem considered on 26 oscillation modes depending on the size of the defect and its location.
Keywords: Damaged, defective, swing, cantilever, frequency
The task of identification of defects in rods with different variants of fastening. In the basis of lies method parameter identification based on an analysis of the frequencies and parameters of natural modes of the structure. Built model of the rod design has defects fluctuations, using finite element of the complex
Keywords: Defect, damage, rod, the oscillations of the cantilever rod
Consensus problem involves a system of processes, some of which may be faulty. A fundamental problem of fault-tolerant distributed computing is for the reliable processes to reach a agreement on a same decision. One approach to achieving such agreement is for processes to vote and agree on the majority value. In the absence of faults, this works fine, but the vote even one faulty process can swing the outcome. In this paper we present some result of analysis of a mixed-failure model, where t processes may fail, b out of which is the Byzantine failures and remaining c is crash processes. In a asynchronous model of computation for several distributed problems it turns out that a collection of N processes can tolerate c crash failures if 2c < N, while robustness against b Byzantine failures requires 3b < N. Our algorithm rely on a weak definition of the Byzantine failures which disallows them act as a dead or a crash processes and can tolerate the 2(N – 2c)/3 failures.
Keywords: fault tolerance, distributed algorithms, asynchronous networks, byzantine failures
The possibilities of waveguide elements realization in the structure of multilayered integrated chips of centimeter and millimeter ranges with SIW (Substrate Integrated Waveguide)-technology application are considered. The approaches allowing effectively using in new structures the algorithms and techniques of the electrodynamic analysis and synthesis of passive devices on classical all-metal waveguides are offered. Advantages of use in SIW structure the waveguides of complex cross-section are considered on the example of the microwave band-pass filter.
Keywords: A.A. Gadzieva, V.V. Zemlyakov, S.V. Krutiev
This article discusses the design of complete large- schools, school building maintenance problems complexes contradictions relevant requirements of normative documents . Analyzes the space-planning decisions , tsvetofakturnye using modern environmentally friendly and durable materials and technologies in the finish, including vandal-proof coating. Designers have been carefully studied dedicated land for future construction of a school complex with a view to the most rational "landing" of the school building , to provide the necessary sanitary requirements , insolation and aeration territory , reliable solution that reduces the cost of running the building.
Keywords: design, stroiteotstvo, space-planning decisions, decoration, interior
For system performance analysis using production resources and capacity of the company in the article gribovodcheskoy used machine production functions. Built several classes of production functions, were identified by their parameters. Obtained statistical quality assessment of identified parameters, the approximation and prediction of properties of calculated dependencies identified model with satisfactory approximation properties
Keywords: production of cultivated mushrooms, production functions
In article efficiency and accuracy медов measurements of noise characteristics of the equipment and cars are considered.
Keywords: The risk, injuring factors, labour safety
The algorithm of a problem about transfer in a higher educational institution by results of Uniform Graduation Examination in view of various groups of introductory tests, priorities of receipt on a speciality, the minimal lowest passing scores in subjects of groups of introductory tests and estimated figures of reception in high school is considered. The algorithm is realized on the basis of database Mirosoft Excel and programming language Visual Basic for Applications.
Keywords: group of introductory tests, the candidate of transfer on a speciality, the applicant of transfer for a speciality