This article introduces a new high-performance LED driver. The developed version of the LED driver is based on an active AC-DC converter with a reverse-pass topology. A special feature of the proposed scheme is the use of a current/ voltage stabilizer on the primary side based on the FL7733A microcontroller and a passive stabilizer on the secondary side. The method of calculating the current values of the current value is presented. According to the proposed scheme, an experimental sample of the LED driver was designed and assembled. Functional tests were carried out, which show a qualitative advantage over the standard LED driver circuit. Temperature tests were carried out, and it is clear that the driver elements do not experience excessive temperature loads and operate within normal temperature limits.

The article presents an overview of modern technologies and materials aimed at improving the energy efficiency of buildings. The analysis of the reasons for the loss of heat resources allowed us to identify the problem areas of building structures that require optimization. In this paperwork, we compare the effectiveness of innovative methods with the standard characteristics of existing buildings. The main directions of energy saving are considered: improvement of structures, monitoring of engineering systems, optimized heat supply and the use of new materials.

The choice of the most rational directions of scientific and technological progress is impossible in our time without careful study and scientifically-based analysis of the sources of information. The purpose of the work is to study the perspective designs of road cutters, providing an increase in productivity and accuracy of operations performed for milling the track of the road surface and its bulges on the basis of patent research. The patent search was carried out in two directions: review of existing processes and kinematic schemes of milling of complex profile surfaces, including pre-surface coatings; review of existing processes of milling of complex profile surfaces on the basis of coordinate closure of the milling cutter-tool-coating system. This review is based on the search for available scientific and technical information, including regulatory and technical documentation, scientific articles, current patents for inventions and utility models, information on advanced manufacturing technologies. The analysis of inventions is carried out, their principle of action is considered. Both positive and negative effects of innovations are revealed. The main perspective directions of modernization of the design of expensive cutters are defined, their classification is presented. The paper presents inventions that are not only designed to increase the productivity of production, rapid tool replacement, but also to improve the accuracy of milling the gauge of the road. The results of the work can be used in the selection of ways to improve the working bodies of road cutters.

This research paper examines research in the field of cloud services, information security, and artificial intelligence. These areas of information technology are studied in detail in the development of a single cloud service for the protection and monitoring of corporate computer networks and SOHO-class networks with intelligent mobile software and hardware clients based on Raspberry Pi microcomputers. This paper presents the specifics, idea, and approaches to the development of the above-mentioned cloud service, and analyzes the sources that were useful in the course of this study. Separate issues of cloud technologies and cybersecurity are investigated. The works devoted to the study of the possibilities of building syntactic, semantic analyzers and linguistic processors, including for the Kazakh language, are also considered. In general, this article provides an overview of the sources studied and researched in order to achieve the goals set for the development of the above-mentioned cloud service.

In this article the integro-differential equations of own vibrations of a viscoelastic ribbed truncated conical shell are obtained on the basis of the Lagrange variational equation. Using the finite element method, a method for solving and an algorithm for the equations of own vibrations of a viscoelastic ribbed truncated conical shell with hinged and freely supported edges has been developed. The problem is reduced to solving homogeneous algebraic equations with large-order complex coefficients. For a solution to exist, the basic determinant of a system of algebraic equations must be equal to zero. From this condition, we obtain the frequency equation with complex output parameters. Complex roots of the frequency equation are determined by the Muller’s method, at each iteration of the Muller’s method, the Gauss method with the selection of the main element is applied. The study of own vibrations of viscoelastic panels of truncated conical shells is carried out and some characteristic features are revealed. With an increase in the number of edges, respectively, the real and imaginary parts of the own frequencies increase.

Unlike rigidly coupled parallel robots, parallel cable robots (PCR) are driven by flexible cables rather than rigid links to control the position and orientation of the working body. PCRs have the advantages of parallel robots over conventional robots, including a higher load-to-weight ratio. PCR have lower inertial characteristics and a higher payload-to-weight ratio, which provides high speed and acceleration of the working body. Due to the flexibility of the ropes, PCRs can be used to solve complex tasks with a large working area of ​​service. This article provides an overview of some types of parallel cable robots developed in the world. An overview of works on the design of the PCR, structure, kinematics and dynamics, control and trajectory planning is shown. The conducted review of cable parallel robots will be useful for students and doctoral students working in the field of research of fundamentally new robots.

The article deals with the use of renewable energy for the production of bioethanol. The resources of biomass for the production of bioethanol have been determined. The bioenergy assessment of agricultural waste for processing into bioethanol is presented. The possibility of using solid household waste as a raw material for producing bioethanol is considered.

The creation of modern high-speed highways is a priority area of road construction. The use of new laying technologies depends on the properties and structure of road construction materials, which are used not only for the formation of the coating, but also for the preparation of the bases. The paper considers the basic principles of various theories of compaction of materials, which allow us to conclude that the existing compaction technique has a number of significant negative aspects. In this regard, it is possible to create adaptive working bodies with a controlled force effect on the material. Currently, the use of mechanisms for adapting to the compacted material in the practice of road construction is limited, due to the complexly regulated control of compaction parameters based on feedback, which is often used in the modern robotics industry.

Employees can potentially expose their organizations to huge amount of cyber risk. This may happen through falling for phishing attacks, careless handling of sensitive data, or poor password management, many data breaches are directly or indirectly caused by user awareness issues. To tackle this, mature companies have implemented security awareness program initiatives. However, without fostering feelings of responsibility and accountability for cybersecurity among employees, these programs will not necessarily make an organization any safer or less vulnerable. This article provides general review on different ways of establishing robust security culture within companies and building effective security programs. The report also discusses current approaches and challenges of implementing information security awareness programs.

A hardware implementation of a high-speed device for reducing numbers modulo is considered. We used a modified division algorithm with a shift of the dividend, where at each step n + 3 most significant bits of the dividend, and then the resulting remainders, participate. The shift of the reduced number at each step by three bits to the left towards the higher bits shifted and it makes it possible to speed up the process of reduction in modulus by reducing the number of modular reduction steps. The main unit of the device is a block of partial remainder formers (PRFs), which use subtraction of the P modulus and multiples of the P modulus.