Traffic control and coordination is an important feature on today's busy roads. Typical traffic lights switch from a fixed time to those based on a variety of sensors. Some weaknesses were identified when considering these various approaches. In this article, we offer intelligent dynamic traffic lights that can adapt their signaling time (for example, changes from green to red and vice versa) according to traffic density, using information about the arrival direction and leading time transmitted from mobile phones transmitted by car drivers, smart antennas installed on cellular base stations. Analysis of the simulation shows that the proposed system can reduce the queue delay by 22%. Therefore, this approach will reduce fuel consumption and environmental pollution by 22%, avoiding the queue at the traffic lights. On this architecture, we define and evaluate an adaptive light control algorithm using simulation. Based on two main objectives, this algorithm dynamically determines the sequence of green lights by selecting the movements that make up each phase and its duration. The simulation results show that this algorithm, if properly configured, is able to reduce the average waiting time at the intersection. The development of modern digital technologies, information exchange and the use of intelligent control systems in the automotive industry has led to a significant change in scientific, technological and practical approaches to the organization of optimal road traffic in densely populated cities.

The article presents the results of a comparison of partial values of the carrying capacity of piles obtained by static and dynamic tests. The tests were carried out for driven piles, cross-section 30x30 cm. The complex of investigations is represented by more than 150 pile soil tests carried out in accordance with the requirements regulated by GOST 5686. On the basis of the results we analyzed convergence of the compared test methods and statistical analysis of data. The results of the analysis have shown that all obtained private and average values of bearing capacity are acceptable and have a close relationship with each other. The research is of practical importance for further construction of the oil and gas complex. The revealed regularities will allow to make correction of dynamic express method results in relation to a static method, which is considered to be a reference one. A large number of obtained private values of bearing capacities provides statistical reliability of the obtained results.

To improve the reliability of digital transmissions, error correction codes are used in each digital communication system. New encoding schemes are currently being developed to meet new data rate or reliability constraints. Therefore, digital communication systems are in constant development. In a digital communication system the use of an error correction code is mandatory. The error-correcting code allows you to get good resistance to channel quality degradation. The article presents an analysis of the digital communication system. The article describes the purpose, structure, and blocks on which information transmission is based. Channel encoders are considered to describe a technique for correcting errors in a communication channel. The encoders introduce some redundancy into the binary information sequence, which can be used by the channel decoder in the receiver to overcome the effects of noise and interference that occur when the signal is transmitted over the communication channel. The paper describes the algorithm of the convolutional error correction code in a digital communication channel, and analyzes the main performance indicators of convolutional data encoding. The article illustrates the operation of the convolutional encoding algorithm with a data transfer rate of 1/2.

A mathematical formulation of the problem of controlling the reforming process in a fuzzy environment has been formulated and obtained, and a heuristic method for the task has been developed based on the modification of the principles of absolute (relative) assignment and Pareto optimality. The proposed fuzzy approach to solving the control problem in a fuzzy environment is based on the involvement of a decision maker, i.e. his knowledge and experience in the decision-making process for process control in a fuzzy environment. In this case, the experience, knowledge, intuition and preference of the decision-maker, as a rule, is expressed in the form of fuzzy information. The mathematical formulation of the reforming process control problem is concretized for the case of one criterion (gasoline yield) and a vector of fuzzy constraints, when the yield of other minor products (hydrocarbon gases) can be ignored. The specific task of controlling the reforming process is solved using the proposed heuristic method. The results obtained are compared with the known results obtained on the basis of a deterministic approach and real data. The advantages are shown and the effectiveness of the proposed fuzzy approach to solving the control problem in a fuzzy environment is substantiated, which, when solving the problem, takes into account and makes the most of the initial fuzzy information. The novelty of the proposed approach to the formulation and solution of the control problem in a fuzzy environment lies in increasing the adequacy of the decision made based on the use of the experience, knowledge and intuition of the decision maker.

In the conditions of construction, the tasks of laying, replacing or repairing underground utilities are unavoidable. Currently, the vast majority of these works are carried out in an open manner. Often, especially in urban construction, it is necessary to remove part of the asphalt pavement. Depending on the strength of the material, the thickness of the coating, the required amount of work and the resources of construction organizations, various machines and technologies for removing asphalt concrete are used. The vast majority of machines currently used for cutting process joints in asphalt concrete surfaces implement the working process of milling or abrasive cutting, which is characterized by high energy consumption, requires the use of special equipment and cutting tools. These and other factors have a significant impact on the cost of work.

The paper studies the effect of mechanochemical activation on the elemental composition of shungite rocks of the Koksu deposit. The use of nanostructured shungite powder in sorbents can lead to an improvement in their sorption properties. As a result of mechanochemical activation in samples of shungite rocks of carbonate and shale origin, the mass fraction of carbon decreases, and the mass fraction of silicon increases. The composition of the rocks also increases the content of oxygen, aluminum and iron, which improves the sorption properties of shungite. A decrease in the speed of rotation of the balls leads to a slight change in the content of elements, a decrease in the content of carbon, oxygen and sodium is observed, and the content of silicon, aluminum, iron and potassium increases. An increase in the ratio of the sample mass to the ball mass from 1:1 to 1:3 at a grinding

The main purpose of the work is the circuit simulation of failures of on-board electronic equipment of spacecraft (SC) for various purposes under specified conditions and the parameters of the transistors of the memory element during the passage of a single cosmic ray particle (CR). Actuality of the problem. It is known that during the operation of spacecraft for various purposes, as a result of the impact of cosmic rays (CR), on-board electronic systems fail, which leads to abnormal situations, and in some cases to the loss of satellites, for example, KazSat -1 and Phobos-Grunt. Therefore, this paper uses the method of circuit modeling, which is a highly efficient and relatively low-cost method that allows us to evaluate the circuit parameters of the transistors of the memory element during the passage of a single cosmic ray particle. In this paper, we present the results of circuit failure modeling (SEU and SEL) under radiation exposure to storage devices (memory), which was carried out on the CMOS structure, which is the dominant one in the manufacture of ICS.

A special design of the die was developed, which allows to implement the process of severe plastic deformation by high pressure torsion to deform ring blanks, which will be the starting material for creating high-strength piston rings. A special feature of the die design is the provision of torsion of the deforming tool with constant rectilinear movement of the press punch due to the composite deforming tool, which includes both displacement and rotation blocks. Using the obtained geometry, computer simulation of this process in the Deform program was performed in order to assess the possibility of a stable process flow. AISI-316 austenitic stainless steel was chosen as the material of the billet. The resulting strain force on the first two cycles was considered. On the first cycle, the force was equal to 464 kN, on the second cycle the force value was about 1200 kN. The obtained values are quite adequate, which indicates the possibility of multi-cycle deformation.

A mathematical model of a frequency-controlled asynchronous electric drive is proposed, which makes it possible to study electromagnetic and electromechanical processes in an electric drive with any drive mechanism. The block diagram of algorithms of calculations performed in the computer application "Mathcad", the results of modeling and their analysis are presented. Currently, the most massive consumers of electrical energy are electric drives based on asynchronous electric motors (AM). At the design stages of new and modernization of existing electric drives with IM, an important place is occupied by mathematical modeling of the object. The mathematical description of the electromagnetic and electromechanical processes of an asynchronous electric drive has been known for a long time. So, in [1], a model of an asynchronous drive for centrifugal mechanisms with a quadratic dependence of the moment of resistance on speed is proposed. The authors propose the universalization of the mathematical model of the electric drive in order to use it for mechanisms with any moment of resistance.

The article provides an overview of cloud computing and services provided on the basis of its virtual technologies. Technological progress has affected all areas of people's lives. In the world of information technology, several thousand services and projects are created every month. More and more companies are switching to cloud services to improve the performance of local projects, to improve their architecture and infrastructure of the company, to save budget and time. The massive transition to cloud computing creates the illusion of one hundred percent security of user’s personal data in cloud storage. Each user's personal information is confidential, so cloud systems must ensure the integrity and reliable protection of user data. This article analyzes security measures in cloud computing.