The given article presents the development of the concept of “soft power” in Uzbekistan from its inception so far. The features of the potential of "soft power" in Uzbekistan are given. Recommendations based on foreign experience are given for the development of “soft power” in Uzbekistan.
30.04.2024 Volume 3 Issue 4 View more Download
This article describes the transport-operational indicators of the city streets, and the transport-operational indicators include the following: Roughness of the surface course of the pavement; Durability of road pavement; Coefficient of friction with wheels; The speed of vehicles.
30.04.2024 Volume 3 Issue 4 View more Download
This article examines the dynamics of retail services offered to the population by commercial banks, in particular, credit services, and also analyzes statistical data on the subject. A number of problems and shortcomings in providing the population with banking services have been identified, and conclusions and suggestions for their elimination have been given.
30.04.2024 Volume 3 Issue 4 View more Download
Currently, wireless communication technologies such as Wi-Fi and Bluetooth are widely used in our daily lives. Their wireless communication technology uses radio waves and uses frequencies allocated to each country. However, this method has problems such as limitations and interference with radio frequency (RF), security, and high cost. The Light-Fidelity (Li-Fi) method, which can solve these problems, has emerged as an alternative. Because the Li-Fi communication method uses visible light, its availability, bandwidth, security, and efficiency are superior to Wi-Fi. In this paper, the actual usability of Li-Fi was confirmed by implementing an audio system using the Li-Fi wireless communication method. The proposed system designed a modulation unit that converts the audio signal into an optical signal, and a demodulation unit that converts the optical signal back into an electrical signal and transmits it to the speaker. Additionally, an audio amplifier was added to amplify the signal. LED was used as a light source, and a solar cell, which is used in solar power, was used as a sensor to detect light signals. As a result of implementing the system, it was confirmed that the audio signal passed through the system using the Li-Fi method and that the appropriate audio signal was output from the speaker. By using a solar cell as a sensor, it can be used for both sensor and solar energy storage. Although it is a basic audio system using Li-Fi, an independent wireless optical communication room can be configured in the future. In addition, it was confirmed that using a laser diode as a light source could be applied to a wider range of fields.
30.04.2024 Volume 3 Issue 4 View more Download
The article provides an analysis of multiplying and dividing devices based on a magnetic transistor amplifier. We consider the amplification mode and the transient process of a magnetic transistor converter, and also provide a description of the operating states of the basic circuit. The proposed scheme is simple, economical, highly reliable, fast and stable. As a result of the research, based on the data obtained, characteristics were constructed on which it can be noted that the rate of change of induction during the operating half-cycle is constant and does not depend on the magnitude of the control signal. When designing functional converters with magnetic transistor pulse-width modulators, the one used in the analysis of one of the proposed circuits, taking into account the dynamic hysteresis loop, can serve as the basis for a preliminary assessment of the conversion accuracy in a given range of input values.
30.04.2024 Volume 3 Issue 4 View more Download
In this work, the temperature dependence of discrete energy states in the silicon band gap was analyzed using a mathematical model of the band gap width of semiconductors depending on the alloying level and the density of states spectrum.
30.04.2024 Volume 3 Issue 4 View more Download
The article presents the results of diagnosis and treatment of swollen scrotum and testicle syndrome in 357 patients aged from 1 to 18 years. The results of an ultrasound study on the causes of swollen scrotum and testicle syndrome, features of clinical manifestations, types and severity were analyzed. It was recommended to use a differential approach in choosing the tactics and method of surgical treatment depending on the condition. During conservative treatment, the importance of ultrasound in assessing the dynamics of testicular blood circulation and the types of lesions is emphasized.
30.04.2024 Volume 3 Issue 4 View more Download
The relevance of the study is due to the observed increase in chronic purulent polysinusitis and antibiotic resistance of the main pathogens. The effectiveness of low-frequency ultrasound in combination with endonasal intradermal antibiotic therapy was assessed. The study included 40 patients diagnosed with chronic purulent semi-sinusitis and a history of periodic exacerbations throughout the year. Patients of the 1st group received antibiotic therapy, the sinuses were washed with a 0.9% sodium chloride solution, and low-frequency ultrasound was used in the treatment of patients of the 2nd group. A comparative analysis showed the safety and high efficiency of low-frequency ultrasound, and the absence of its effect on the growth of antibiotic resistance allows its use in the treatment of chronic purulent polysinusitis.
30.04.2024 Volume 3 Issue 4 View more Download
SCIENCE & INNOVATION