Acta of Turin Polytechnic University in Tashkent

Development of encryption and archiving algorithms in accordance with GOST 28147-89 in open source operating systems

2023-02-28T05:16:21+00:00

Operating systems belonging to the Linux family are somewhat more secure due to the limited access to system files. However, due to the fact that unlimited access is created when logged in using the system administrator (root), it requires special encryption methods to keep some data confidential. According to the level of data confidentiality, only the GOST 28147-89 standard is a highly durable encryption algorithm.

Efficient implementation of a buck converter control using a low performance microcontroller

2023-10-10T04:23:04+00:00

The implementation of power switching converters by low cost embedded systems is in general limited by the low operating frequency as well as the resolution of the variable duty cycle waveform which controls the power converter. The paper analyzes how the use of dedicated hardware units may partially overcome these limits and whether a microcontroller in an embedded system may both operate as a power supply controller and at the same time perform other application tasks which do require a limited amount of processing power.

STUDYING FACTORS DETERMINING THE SERVICE LIFE OF ELECTRIC MACHINES

2023-10-10T04:22:13+00:00

In this article, the process that occurs during the use of electric machines, that is, what reactions occur in the insulat-ing part of electric machines as a result of temperature rise, when the temperature of electric machines exceeds the external ambient temperature specified in the regulatory documents, i.e. 40oC, the temperature of electric machines increases. The composition of the insulation materials, which should be used for the thermal class per-mitted in the insulation materials, is also analyzed.

The METHOD AND SOFTWARE TO FIND SPELLING MISTAKES IN TEXT WRITTEN IN UZBEK LANGUAGE BASED ON THE LATIN ALPHABET

2023-09-26T14:12:29+00:00

This article is devoted to software development for Uzbek texts, which detects spelling errors and corrects them in some places. Due to the constant use of the Uzbek language based on the Latin script and some misunderstandings in the transition from Cyrillic to Latin, it is especially important to find and correct spelling errors. The article describes the importance and advantages of the software developed for finding spelling errors in texts written in Uzbek.

DATA STRUCTURE SPARSE TABLE

2023-10-10T04:20:12+00:00

This article discusses the sparse table data structure: description, capabilities, and scope of application. The results of comparison with such data structures as a segment tree and a sqrt decomposition for two problems are shown. The listing codes are presented in the C++ programming language.

SOLVING THE PROBLEMS OF NORMALIZATION OF NON-STANDARD WORDS IN THE TEXT OF THE UZBEK LANGUAGE

2023-10-10T04:18:49+00:00

Text normalization is an important component of the text-to-speech (TTS) system, and the difficulty of text normalization lies in distinguishing between non-standard words (non-standard words). In this paper, a taxonomy of non-standard words based on Uzbek speech has been developed, and a two-stage strategy for determining non-standard words has been proposed. The proposed two-stage strategy for identifying non-standard words provides an accuracy of 98.53% in the open test. Experiments show that non-standard taxonomy of words provides high initial performance

The International consequences of cyber warfare: A study of the "stuxnet" case

2023-09-26T14:08:17+00:00

Abstract– This article attempts to analyse the international consequences of
cyber warfare. As an example, the author considered an episode of joint
operation of the U.S. and Israel against a nuclear facility located in Natanz,
Iran with the aim to destabilise it using the “Stuxnet” computer worm. The
study aims to define the concept of cyber warfare and its characteristics,
briefly analyse the principle of the virus, understand the impact and
consequences of the virus on the international community, and determine
further prospects and threats that await us with the development of cyberwars.

Perspectives and challenges of Assembly 4.0 technologies for final automotive assembly operations in Uzbekistan

2023-10-10T04:15:22+00:00

Nowadays, manufacturing is moving to the next phase of digitalization through the "Assembly 4.0" concept. This new paradigm is supported by innovative technologies such as the Internet of Things, assembly control systems, augmented reality, system simulation, system integration, and other advanced digitalization technologies. These advanced technologies allow optimizing final automotive assembly systems to achieve greater flexibility and efficiency in production processes, generate a value-added proposition for their customers, and provide a timely response to their market needs. However, despite the potential benefits of Assembly 4.0, organizations face common obstacles and challenges in adopting new technologies and successfully implementing them in their assembly operations. Therefore, this article identifies and analyzes the problems that may hinder the implementation of Assembly 4.0 technologies in final automotive assembly organizations and gives practical recommendations for their elimination.

DYNAMIC MULTICRITERIA ANALYSIS DEVELOPMENT OF THE ELECTRIC VEHICLE MARKET AND THEIR INFRASTRUCTURE IN UZBEKISTAN

2023-11-28T10:32:48+00:00

The development of the electric vehicle industry in the world, as well as in Uzbekistan, is one of the promising directions in the field of transport aimed at improving the environment. The development of this industry requires solving a number of problems, including the development of regulatory documents, the formation of solution methods and infrastructure development. The formation of infrastructure for electric vehicles requires the creation of new markets for innovative products and therefore needs active support in various industrial and social sectors of the state. It is also necessary to constantly analyze the state and dynamics of the development of the electric vehicle market in the world and in Uzbekistan.This article is devoted to the analysis of the dynamics of the development of the market of electric vehicles and their infrastructure for 2018-2023. Due to the steady growth in the number of electric vehicles and charging stations in Uzbekistan, the analysis is based on a multifactorial assessment of the technical characteristics of the vehicle, including the type of electric motor, drive topology (front/rear/full), range on a single charge, etc.

ANALYSIS OF THE RECOVERY SYSTEM BRAKING ELECTRIC VEHICLES

2023-11-24T09:54:28+00:00

Electrically powered vehicles are a relatively new industry in the automotive world today. The first electric cars, which were created in the early stages of development in the automotive industry, had much improved characteristics in relation to cars running on internal combustion engines. Over the years, the development of technologies for producing fuel for internal combustion engines has become significantly more affordable and much cheaper, as a result of which the need for electric vehicles has significantly decreased. At the beginning of the 21st century, environmental degradation due to exhaust emissions from internal combustion engines of cars gave a new impetus to the development of electric vehicles [1].This article is devoted to the analysis and evaluation of the use, as well as the effectiveness of the regenerative braking system of electric vehicles.

Advancing Blockchain Security: Post-Quantum Cryptography in the Quantum Era

2023-11-30T04:52:48+00:00

The emergence of quantum computing presents significant challenges for the security of blockchain technology, traditionally reliant on cryptographic methods now vulnerable to quantum capabilities. This article examines how current blockchain cryptography is at risk due to advancements in quantum computing and emphasizes the urgent need to shift towards more secure, quantum-resistant cryptographic methods. It explores various advanced cryptographic approaches, including lattice-based, code-based, multivariate polynomial, hash-based, and isogeny-based cryptography, highlighting their potential to enhance blockchain security against quantum threats. The focus then shifts to strategies for incorporating these advanced methods into existing blockchain systems, detailing a step-by-step transition process, the importance of comprehensive testing, ensuring compatibility across different systems, and adhering to new global standards. The discussion also covers the potential difficulties and opportunities in this integration, such as performance considerations, maintaining the ability to handle an increasing number of transactions, and the importance of ongoing innovation and research. Finally, the article emphasizes the need for collaborative efforts in research and development to successfully adapt blockchain technology to this new era of quantum computing, ensuring the future security of digital transactions.