Within approaching the plane-stress state the problem of a high-speed rotating disk being under side pressure is considered. Within the model of a perfect rigid-plastic body and the Mises yield criterion the values of external parameters for which the plastic zones appear have been defined. The stresses in plastic zones are obtained from the solution of the Cauchy problem, which includes two differential equations to define the stress tensor nonzero component. In order to estimate the stress state in the elastic zone the equivalent stress is introduced. The maximum allowable values of external parameters are obtained from the solution of the problem when the disk is in the limit state. The numerical results are represented as the stress vector hodograph.

Keywords: the plane-stress state, Mises yield criterion, the equivalent stress, an elasto-plastic solid, a rotating disk, a stress vector hodograph

This article is the result of a study of project documentation, one of the largest oil companies in the Russian Federation. This article aims to identify and identify systematic errors and deficiencies in the design of oil fields, which can lead to significant risks of accidents, damage to equipment, violation of the integrity of buildings, the emergence of threats to human life. The aim of the author was to identify and systematize these shortcomings, to offer the best options for correction for the purpose of further application, qualitative improvement and acceleration of the design of oil fields. Further examples of errors and shortcomings of project documentation, expected consequences which can occur if not to eliminate these errors and all necessary normative base on these questions will be given. Errors at the design stage, in turn, can lead to disastrous consequences, ranging from increased construction time, ending with emergencies and irreparable damage to the environment and human health, which leads to enormous economic losses. Design errors, even the most insignificant, can be compared with the butterfly effect. A minor mistake in the project can lead to grandiose consequences. Ballasting of pipelines. Ballasting of pipelines is taken into account in the installation of pipelines through water obstacles or water-bearing sections, when laying in the swamp.Depth of laying of pipelines at crossing of water barriers. The development of design solutions in the field of transitions on the materials of surveys that were carried out more than two years ago, without the implementation of actual engineering surveys is not allowed.Electrochemical protection of pipelines. At all available ways of laying, (except above-ground), irrespective of degree of aggressiveness of soil, pipelines shall be protected by complex anticorrosive substances and means of electrochemical protection are applied.The location of the purge of candles on the pipelines. The distance from a certain point to the purge plug in the construction of main pipelines from overhead wires must be taken from 300 meters, under cramped conditions of the route of high-voltage overhead lines, this distance can be reduced to 150 meters.the aim of the study was to identify design errors and their consequences, with the aim of further prevention and accounting. The result of these adjustments and corrections will be both cost savings and reduced construction time

Keywords: design, defects, field, capital construction, operation, analysis, research, documentation, expertise, violation

The paper focuses on energy efficient reconstruction of construction systems by means of their upward extension using modular spatial structures. It is further noted that the existing contradictory definition of the term “modular structures” necessitates classifying modular structural elements by spatial dimension, type and size, weight, degree of prefabrication, constructability and environmental safety. A list of the world’s leading manufacturers is provided featuring modular spatial structures to be used in the construction of new buildings and reconstruction of existing buildings. Also, the paper underlines the importance of using added stories in making modular roof structures of lightweight metallic structures (LMS) and lightweight thin-wall steel structures (LTSS) and provides an overview of the main types of modules, pointing out the key benefits of modular structures.

Keywords: modular building structures, energy efficient reconstruction, upward construction, structural and non-structural modules, constructability

Finite state machines, being a mathematical abstraction, allow you to perceive information from the control object, process it and give signals to control the object. The disadvantages of the representation of complex production systems by a set of finite state machines include the complexity of carrying out logical and set-theoretic operations on them and the complexity of describing the parallelism that occurs in the operation of complex production systems. When specifying a finite state machine in the matrix–predicate form, due to the information redundancy, it is possible to avoid these difficulties. Matrix–predicate method allows you to uniquely set the finite state machine square matrix, which makes it possible to use the methods of the theory of matrices during the set–theoretic operations on them and it is possible to avoid isomorphism. The paper presents the developed methods of representation of a finite state machine using a multi-place predicate, which greatly simplifies its task.

Keywords: finite state machine, graph, matrix, predicate, algorithm, matrix–predicate method, graph incident, tuple, Cartesian product, complex production systems

Mathematic modeling of the state of a thin round disk being heat and force affected is performed. In the central part of the disk the homogeneous field of temperatures is formed. Within the deformation theory of a perfect elasto-plastic solid the quadratic plasticity condition is chosen. The relationships between the radius of the disk, the temperature of the central part of the disk and the external pressure which defines the appearance of plastic zones have been established. For different values of external parameters of the model the stress vector hodograph and the plots of stresses and equivalent stresses have been introduced.

Keywords: mathematic modeling, an elastic-plastic solid, the plane-stress state, the deformation theory, thermo-elasto-plasticity, a high-speed rotating disk

The article deals with the processes of separation of thin films of oil liquids on the basis of rotary-belt type devices. The analysis of interaction of liquids and working body is made. The model of formation of oil films and their separation is described. the Studies create prerequisites for the development of engineering methods for calculating the design and operating parameters of the rotor-belt device for the formation of emulsion films and cleaning water surfaces from oil films, which is of great environmental importance.

Keywords: emulsion, film, apparatus, oil stain, viscosity, water surface cleaning

The article deals with the problems and features of Informatization of higher education. The problems of information technologies in the educational process are presented. The main advantage of it is that they contribute to the creation of an effective multi-sensory interactive learning environment with great potential for use by teachers and students. The factors influencing the process of Informatization of educational institutions are analyzed. In order to achieve positive results of the use of information technologies in training, it is proposed to introduce new subject programs in the educational process, which will allow to determine the methods of teaching and the conditions of the educational process. The use of subject programs will provide the user with the opportunity to build their learning algorithm.

Keywords: information technologies, education, communication technologies, problems of training, features of training, programs, factors influencing process of Informatization of educational institution, conditions, advantages of information technologies

The article presents an analysis of promising research on the formation of vibrational mechanochemical coatings from the point of view of practical use in the real sector of the economy

Keywords: combined methods of treatment, vibration treatment, the vibration mechano-chemical (chemical-mechanical) coverage webrevolve technological system, mechanical coating, fragmentary nature, plastic deformation, uniform coating, vibrowave impact, microstructu

Article is devoted to acquaintance with methods which are used in the work by experts-builders when conducting construction technical expertizes of building constructions, buildings and a construction. The list of the main methods used in researches by the expert is provided and also each method is considered in more detail.

Keywords: Method, examination, expert, technique, fundamental principle, special case, graphic model, construction designs, construction technical expertize

The article highlights the issues of creating the information and educational environment of the university in modern education. Components for effective pedagogical process are presented. It describes the essence of the integration of ILE and education, as well as the direction of the integration of educational tools. The connection of the global trends in the development of an innovative economy and the requirements of the main directions for the development of IOS of the university is shown. The intra-university component is analyzed, which reflects several levels of interaction between various educational tools.The information presented in the article shows that the availability of pedagogically useful didactic support and the economic consideration of all factors and conditions ensures efficient functioning.

Keywords: information and educational environment (ILE), development trends, ILE structure, pedagogical process, distance learning, integration, economic component of ILE, didactic support

The article shows the possibility of describing complex objects with parallel functioning components in the form of structures built on the basis of neural networks. The neural network is represented by an operator matrix, that is, a formal description that gives a universal way to solve many non-standard control problems. Matrix apparatus is shown to significantly improve the efficiency of the method compared to previously known. It is concluded that the representation of the neural network by the operator matrix provides a universal way to solve the problems of transport and information flows management; neuron-like systems based on such representation of the neuron are able to catch complex nonlinear relationships, self-improvement, learning in the process of use. Their use provides ample opportunities for finding and implementing effective solutions to the problems of management and control of flows

Keywords: graph, parallelism, transport and information flow, neural network, synaptic weight, predicate, activation function, operator matrix, neuron, complex systems

This article discusses the main problems faced by experts in the construction and technical expertise of real estate. The measures that can improve the quality in the performance of judicial construction and technical expertise are considered.

Keywords: optimization, judicial construction and technical expertise, litigation, major problems, construction contract, construction and installation work, completed

The article contains information about the formats, types, advantages of banner advertising, made analysis of errors that allow developers and customers, developed a General principle of successful visualization of banner advertising for the tourism sector.

Keywords: banner advertising, banner, tourism, offer, Internet, advertising, efficiency, layout, layout, rule of thirds

The article presents the results of an experimental study of methods and means of technical diagnostics of the engine cylinder-piston group during cold, idle scrolling of the crankshaft

Keywords: cylinder piston group, gas flow from the crankcase, technical conditions of the experiment

The problem of transmitting an image in a transmitter-receiver system over a noisy data transmission channel in JPEG 2000 and JPWL format under conditions of a previously unknown and varying intensity of noise is considered. This task is considered for the conditions of the IP network. The article aims to build methods for estimating the intensity of noise by the JPWL decoding results in the receiver and dynamically adapting the parameters of the JPWL transmitter to the current assessment of the noise intensity, ensuring the highest quality of the decoded image with the shortest length of the transmitted encoded stream. An experimental study of the relationship between the parameters of JPWL, the intensity of noise and the quality of the decoded image was carried out. It is shown that for any JPWL parameter there is a region of one-to-one correspondence between the percentage of fully recovered tiles and the probability of losing a network packet. A technique for estimating the intensity of noise by the decoding results of a single image is described. This technique can be expanded to use the results of decoding a series of images.

Keywords: noisy channel, antinoise coding, noise intensity, decoding result, JPEG 2000, JPWL, experimental model