Technical Direction Research Articles

International digital project for psychological mutual aid of students from Russia and Kazakhstan

Introduction. The challenges of the modern world require university graduates to possess not only professional skills, but also the skills to preserve their mental health, manage emotions to control their reactions to stress and make informed decisions. Taking care of mental health also contributes to increased productivity and performance. The task of universities is to train young professionals who are able not only to assimilate knowledge and develop competencies, but also to maintain a high degree of efficiency and adaptability. The purpose of the article is to describe the implementation of the international project on psychological mutual aid of university students in Russia and Kazakhstan and to analyze the results obtained. Materials and methods. 127 students of Petrozavodsk State University and Eurasian National University participated in this project. Comparative data analysis, formalized questionnaire surveys of open and closed type, self-assessment and methods of statistical analysis were used as research methods. Research results. Joint work on the project allowed to realize positive dynamics in the development of cognitive and autopsychic components of psychological competence of students of two universities. Similarities and differences in their awareness of the degree of importance of psychological problems were revealed. The target indicators of the experimental groups were statistically significantly higher in their understanding of the seriousness of problems and necessary steps to overcome stress, panic attacks and anxiety (t emp_PetrSU – 9.73, t emp_ENU – 2.82604602), various psychological dependencies (t emp_PetrSU – 5,12, t emp_ENU – 4,48), problems in relations with parents (to a greater extent among PetrSU students, t emp_PetrSU – 10,76, t emp_ENU – 10,02), problems with self-esteem and dissatisfaction with their appearance (t emp_PetrSU – 10,51, t emp_ENU – 4,93). Project participants realized the necessary algorithm of actions in the situation of abusive parent-child relationships (t emp_PetrSU – 9.993, t emp_ENU – 6.17), as well as bullying (t emp_PetrSU – 9.73, t emp_ENU – 5.33). A significant result of the project was the creation of a website. Discussion and Conclusion. The integration of the interdisciplinary project aimed at the maintaining the psychological health of students in order to form their psychological competence into the content of foreign language teaching at the university has confirmed its effectiveness. Recommendations for the dissemination of this experience in the organization of training of students of technical and natural science directions of training are offered

O'ZBEK TILI MASHG'ULOTLARIDAN SAVOL O‘QUV TOPSHIRIG‘IDAN FOYDALANISH

The article describes the effective use of types of exercises when teaching the Uzbek language in the higher education system, the skills and qualifications established in the Uzbek language in the requirements of the technical direction, as well as training tasks for their formation, and suggestions-considerations. Exercises are also described, classified, and new textbooks and manuals contain recommendations and samples of what grammar and conversational exercises are like.

INNOVATIONAL POTENTIAL OF REGIONS

The country's innovative development guarantees the trustworthy capacity of future periods. In Kazakhstan, spatial development of regional territories is relevant for academic circles and the business community. The basis of this study is whether Kazakhstan has the potential to form a scientific and technical direction of development in the presence of existing opportunities for the dynamic development of regions. In this study, such scientific methods as analysis and synthesis, generalization, as well as an integrated approach, analytical review, abstraction, and logical analysis were used. The analysis showed that not all regions of Kazakhstan have positive changes: the number of research institutes is decreasing, and the number of research specialists performing R&D does not increase. However, we can note a sharp growth rate in the number of enterprises, as well as the implementation of R&D in terms of high investment activity in the country. In this regard, we note that the preparation of Kazakhstan to become one of the best states in terms of competitiveness is based on long-term planning to increase the position of innovation vitality of organizations, upgrade the innovation climate in the country, increase the share of investments in scientific modernization and convergence of business and science. Thus, the main outcomes of this research show that regional differences in economic development illustrate the uniqueness of conditions for each of them, the development of which shows positive dynamics and changes. The innovative trail of development of Kazakhstan is at an early stage. However, the accumulated experience of this country can rightfully be considered an example for many other countries.

Research on present situation and development of fire strike equipment for mountain operations

Abstract Mountainous areas account for a large proportion in China’s border regions. In view of the special terrain and complex meteorological conditions of mountain warfare, mountain firepower strike equipment has become the core key for our military to deal with border conflicts. In order to adapt to the changes in future mountain warfare and lead its development, this paper summarizes and analyzes the performance characteristics and development history of mountain warfare equipment at home and abroad. Combined with the influence of future mountain warfare forms and battlefield environments, characteristics of active equipment and the application of high and new technologies on mountain warfare, the future development goals of mountain firepower strike equipment are prospected, and the technical research directions of mountain firepower strike equipment are proposed in stages according to the strike equipment system structure.

Comparison and Optimization of DSRC and C-V2X Technologies: Current Status, Challenges, and Future Prospects

DSRC (Dedicated Short-Range Communication) and C-V2X (Cellular Vehicle-to-Everything) have emerged as two key communication technologies for vehicular networks. However, both technologies face challenges in terms of communication performance and integration. This paper presents a detailed comparison and optimization study of DSRC and C-V2X, focusing on their status, technical challenges, and future development trends. The study reviews recent advancements in enhancing the throughput, communication range, and resource allocation of both technologies. Moreover, we explore the potential of AI and 5G technologies in addressing the limitations of DSRC and C-V2X, offering insights into their integration in next-generation vehicular communication systems. Finally, this paper discusses the technical challenges and possible future directions for the convergence of these two technologies, aiming to enhance vehicular network efficiency and support advanced V2X applications.

Electrochemical Mechanism Underlying Lithium Plating in Batteries: Non-Invasive Detection and Mitigation

Efficient, sustainable, safe, and portable energy storage technologies are required to reduce global dependence on fossil fuels. Lithium-ion batteries satisfy the need for reliability, high energy density, and power density in electrical transportation. Despite these advantages, lithium plating, i.e., the accumulation of metallic lithium on the graphite anode surface during rapid charging or at low temperatures, is an insidious failure mechanism that limits battery performance. Lithium plating significantly shortens the battery’s life and rapidly reduces capacity, limiting the widespread adoption of electrical vehicles. When lithium plating is extreme, it can develop lithium dendrites, which may pass through the separator and lead to an internal short circuit and the subsequent thermal runaway damage of the cell. Over the last two decades, a large number of published studies have focused on understanding the mechanisms underlying lithium plating and on approaches to mitigate its harmful effects. Nevertheless, the physics underlying lithium plating still needs to be clarified. There is a lack of real-time techniques to accurately detect and quantify lithium plating. Real-time detection is essential for alleviating lithium plating-induced failure modes. Several strategies have been explored to minimize plating and its effect on battery life and safety, such as electrolyte design, anode structure design, and hybridized charging protocol design. We summarize the current developments and the different reported hypotheses regarding plating mechanisms, the influence of environmental and electrochemical conditions on plating, recent developments in electrochemical detection methods and their potential for real-time detection, and plating mitigation techniques. The advantages and concerns associated with different electrochemical detection and mitigation techniques are also highlighted. Lastly, we discuss outstanding technical issues and possible future research directions to encourage the development of novel ideas and methods to prevent lithium plating.

Analysis of multidimensional impacts of electric vehicles penetration in distribution networks

Moving towards a cleaner, greener, and more sustainable future, expanding electric vehicles (EVs) adoption is inevitable. However, uncontrolled charging of EVs, especially with their increased penetration among the utility grid, imposes several negative technical impacts, including grid instability and deteriorated power quality in addition to overloading conditions. Hence, smart and coordinated charging is crucial in EV electrification, where Vehicle-to-Grid (V2G) technology is gaining much interest. Owing to its inherited capability of bi-directional power flow, V2G is capable of enhancing grid stability and resilience, load balancing, and congestion alleviation, as well as supporting renewable energy sources (RESs) integration. However, as with most emerging technologies, there are still technical research gaps that need to be addressed. In addition to these technical impacts, other multidisciplinary factors must be investigated to promote EVs adoption and V2G implementation. This paper provides a detailed demonstration of the technical problems associated with EVs penetration in distribution networks along with quantifiable insights into these limitations and the corresponding mitigation schemes. In addition, it discusses V2G benefits for power systems and consumers, as well as explores their technical barriers and research directions to adequately regulate their services and encourage EV’s owners to its embracement. Moreover, other factors, including regulatory, social, economic and environmental ones that affect EV market penetration are being studied and related challenges are analyzed to draw recommendations that aid market growth.

Multi-objective decision optimization design for building energy-saving retrofitting design based on improved grasshopper optimization algorithm

With the national emphasis on building energy efficiency planning, energy efficiency optimization in existing buildings requires renovation measures based on multi-objective factors. In order to get the optimal solution in the multi-objective decision-making of renovation, the study proposes a class of improved grasshopper optimization algorithms. The process employs a systematic methodology to identify an optimal energy renovation method, taking into account the specific characteristics of the building environment. It then classifies and formulates the energy reduction substitution items for building renovation, and finally, it synchronizes the cost of the renovation project as a measure for decision-making. The elite inverse strategy approach enhances the grasshopper optimization algorithm to facilitate the multi-objective decision-making process associated with building renovation measures. The results showed that the improved grasshopper optimization algorithm could achieve a decision accuracy of 98.8% for the test samples, which was 5.5% higher than the accuracy of the particle swarm optimization algorithm. Repeated run tests of the research algorithm for multi-objective decision making yielded a mean decision fitness value of 2.34×104 and a data extreme value of 0.38×104. Compared to other algorithms improved grasshopper optimization algorithm converged in a lower range of fitness values, which indicated that the algorithm worked well for multi-objective optimization and the model repeatability was good. The research algorithm was used to decide the energy efficient renovation planning of the building and the power consumption of the renovated power supply system was reduced by 23.7%-49.6%. This indicates that the renovated building has better energy efficiency and can provide a reliable technical direction for decision-making optimization of building energy efficiency renovation.

Perspective Transform-based Depth Estimation of Monocular Camera for Electrocution Threat Determination of Construction Machinery

Abstract. This paper discusses the application of perspective transform-based monocular camera depth estimation method in monitoring the safety distance between construction machinery and power lines. The traditional distance measurement relies on manual operation, which is inefficient and not precise enough, while the monocular depth estimation method based on deep learning can improve the accuracy, but faces high equipment cost and relies on a large amount of training data. In contrast, the depth estimation method based on perspective transformation proposed in this paper utilizes mathematical and physical principles to establish a mathematical model between the pixel distances of an image and the actual scene distances through perspective projection theory, which simplifies the hardware requirements and reduces the data dependence and improves the computational efficiency and applicability. Through experimental validation under different construction scenes and exposure conditions, the method demonstrates high accuracy and robustness, proving its practicality in construction safety management. This research provides a new technical direction and practical application possibility in the field of intelligent monitoring and 3D reconstruction.

Exploration and Practice of Treatment Technology for Casing Damage in Gas Wells

Abstract In order to solve the adverse effects of casing damage on potential exploration measures such as layer inspection and hole repair, repeated fracturing, and bridge plug fishing in gas wells, to prevent the problem of annular pressure, and to effectively ensure the safety production of gas wells, exploratory research on the treatment technology for casing damage in gas wells has been carried out. First, the principle of casing damage and the technical difficulties of treatment are systematically analyzed. Then, combined with auxiliary technologies such as casing cutting and milling, various technological processes were introduced, including cement squeeze sealing, chemical squeeze sealing, permanent annular sealing, casing patching, small casing wellbore reconstruction, and casing milling and squeeze sealing. Successfully tested on-site in over ten wells, a series of treatment technologies for gas well casing damage has been developed, providing a technical reference for the treatment of other gas wells with casing damage. Furthermore, in response to the challenges faced by the technology of gas well casing damage, new technical ideas and development directions have been proposed to promote continuous improvement in the low-cost and high-reliability aspects of gas well casing damage treatment technology.

Оперативное диспетчерское управление водораспределением в оросительных системах по расчетному приращению объемов

Goal: to improve the methodological approach to developing an algorithm for operational dis-patch control of water distribution based on the calculated increment of water volumes in irri-gation canals. Materials and methods: the dispatch control methodology is described, which is based on the typification of flow conditions between two partitioning structures in technical and functional directions, as well as on the development of systems for unifying channels and their modes using similarity theory methods, which are widely used in hydromechanics and hydraulics. The basis for the implementation of the similarity theory is the principle of using similarity numbers, that is, combinations of dimensionless parameters that determine the char-acteristics of the unsteady motion of a heavy, incompressible, viscous fluid in channels. Re-sults: the general tasks of the dispatcher were determined to re-regulate the hydraulic regime of sections of the irrigation system, without tying them to specific types of hydraulic struc-tures. The main provisions of the method of dispatch control of water distribution based on the calculated increment of volumes, determination of the time of re-regulation between the main and compensating processes of re-regulation are substantiated. Four types of situations are identified when solving dispatch problems of water distribution, which are determined by comparing the volumes and flow rates installed on the site, for each of which the inherent re-regulation order is determined. Conclusion: the article outlines a new methodological ap-proach that ensures the joint use of the method of similarity theory and a simulation experi-ment with the Saint-Venant equations for steady and unsteady water flow in the canals of ir-rigation systems, to solve problems of operational dispatch control of water distribution ac-cording to the calculated increment of volumes.

CFD modeling of gas–solid flow in a two‐stage jetting fluidized bed with an overflow standpipe

AbstractThe two‐fluid model–kinetic theory of granular flow (TFM–KTGF) model and the sub‐grid‐scale (SGS) model are used to conduct a three‐dimensional numerical simulation study on the hydrodynamic characteristics of a two‐stage fluidized bed with an integrated overflow pipe. Using various drag models, the gas–solid flows, bed expansions, pressure drop distributions, and equilibrium conditions in the two‐stage bed are compared, and the conditions for the formation of a stable overflow in the two‐stage bed are thoroughly investigated. In addition, during the simulation of the secondary distribution in the bed, the porous media model simulates the momentum loss caused by the redistribution plate to avoid the direct simulation of the redistribution plate, which requires extensive grid division work and calculation costs. This work can provide technical direction for the industrialization of one‐step coal to multistage fluidized bed natural gas technology.

Preliminary Assessment of Environmentally Friendly Mining Options Based on Various Mineral Resources—A Case Study of the Clarion-Clipperton Fracture Zone in Pacific

Deep-sea polymetallic nodules are associated with rich rare substances, such as rare-earth elements (REEs), Mo, Ti, Te, Li, which are currently in demand and are used in various applications. Deep-sea sediments near nodules are another important source of REEs, which will increase the resource potential of polymetallic nodules. Given the similarity of the mining technologies for deep-sea REEs and polymetallic nodules, this study proposed environmentally friendly mining options and developed a technoeconomic evaluation model by combining deep-sea polymetallic nodules and REEs. Using the Clarion-Clipperton Fracture Zone as an example, this study revealed that the development of polymetallic nodules together with REEs of nearby sediments in the form of by-products will improve the economic and environmental benefits. In addition, the effects of discount rate, cost, and price on the economic benefits of nodule mining were discussed, and a technical development direction was proposed based on scientific and technological needs.

Wake-up of sleeping beauty patent families: The global non-equilibrium diffusion of technological knowledge

Transformative technologies are the key to leading future technology innovation and economic development. However, with the exchange of technological knowledge among countries and the explosive growth of patented technology, the uneven flow and application of technology across geographic regions has become increasingly apparent, making it more and more difficult to track and absorb potentially transformative technology (PTT). As a proxy, the wake-up trajectories of the sleeping beauty patent family (SBPF) reflect the unbalanced distribution and application of PTT but still lack in-depth discussion. Therefore, this study adopted the parameter-free criteria to identify SBPFs and revealed the globalized diffusion patterns of PTT behind SBPFs' wake-up time and pace trajectories by taking “Polymerase Chain Reaction” technology as an example. The findings show that SBPFs’ wake-up has five-time and four-spatial trajectories and presents a small-scale diffusion in local areas. Meanwhile, PTT shows five diffusion patterns, achieving an unbalanced and centralized diffusion worldwide. These provide theoretical support for predicting the global development of PTT, and practical guidance for choosing technical direction, grasping market opportunities, and optimizing the national innovation environment.

EXPERIMENTAL TEST RESULTS ON THE DEVELOPMENT OF STUDENTS' EDUCATIONAL AND CREATIVE ACTIVITY THROUGH TRIZ TECHNOLOGIES

Creative activity skills should be developed from the initial stages in students studying in the technical direction of higher education institutions. It will be necessary to organize periodic repetitions of solutions to given tasks (getting out of the situation), as a result of which Experience (Data Foundation) is accumulated in students, skills and knowledge of creative activity are formed.

Effective Privacy Protection Strategies for Pregnancy and Gestation Information From Electronic Medical Records: Retrospective Study in a National Health Care Data Network in China.

Pregnancy and gestation information is routinely recorded in electronic medical record (EMR) systems across China in various data sets. The combination of data on the number of pregnancies and gestations can imply occurrences of abortions and other pregnancy-related issues, which is important for clinical decision-making and personal privacy protection. However, the distribution of this information inside EMR is variable due to inconsistent IT structures across different EMR systems. A large-scale quantitative evaluation of the potential exposure of this sensitive information has not been previously performed, ensuring the protection of personal information is a priority, as emphasized in Chinese laws and regulations. This study aims to perform the first nationwide quantitative analysis of the identification sites and exposure frequency of sensitive pregnancy and gestation information. The goal is to propose strategies for effective information extraction and privacy protection related to women's health. This study was conducted in a national health care data network. Rule-based protocols for extracting pregnancy and gestation information were developed by a committee of experts. A total of 6 different sub-data sets of EMRs were used as schemas for data analysis and strategy proposal. The identification sites and frequencies of identification in different sub-data sets were calculated. Manual quality inspections of the extraction process were performed by 2 independent groups of reviewers on 1000 randomly selected records. Based on these statistics, strategies for effective information extraction and privacy protection were proposed. The data network covered hospitalized patients from 19 hospitals in 10 provinces of China, encompassing 15,245,055 patients over an 11-year period (January 1, 2010-December 12, 2020). Among women aged 14-50 years, 70% were randomly selected from each hospital, resulting in a total of 1,110,053 patients. Of these, 688,268 female patients with sensitive reproductive information were identified. The frequencies of identification were variable, with the marriage history in admission medical records being the most frequent at 63.24%. Notably, more than 50% of female patients were identified with pregnancy and gestation history in nursing records, which is not generally considered a sub-data set rich in reproductive information. During the manual curation and review process, 1000 cases were randomly selected, and the precision and recall rates of the information extraction method both exceeded 99.5%. The privacy-protection strategies were designed with clear technical directions. Significant amounts of critical information related to women's health are recorded in Chinese routine EMR systems and are distributed in various parts of the records with different frequencies. This requires a comprehensive protocol for extracting and protecting the information, which has been demonstrated to be technically feasible. Implementing a data-based strategy will enhance the protection of women's privacy and improve the accessibility of health care services.

Exploring the Relationship of Declarative Tactical Knowledge With Participation, Football Competence, and Potentiality in a Professional Club (Real Sociedad).

We compared the declarative tactical knowledge (DTK) of 196 male and female players (16.9 ± 2.4years) belonging to the academy of a Spanish professional football club with their participation (minutes played), football competence (coaching staff assessment), and future potential (technical direction prediction). The DTK had no correlation with the minutes played (%) by the participants during the 2021-22 season (r = -.162, p = .045). Student's t test for independent samples compared the football competence of the participants with high DTK (n = 74) and low DTK (n = 76), proving a small impact (p = .021, d = 0.39) in favor of the first group. Although the high-DTK group showed a better average of potentiality, the technical direction identified more potential players for the first team in the low-DTK group. In conclusion, no solid evidence was found to justify that participants with higher DTK in each team were those who played more minutes and showed greater football competence and potentiality.

Research and practice of virtualization PLC (vPLC) technology in 5G industrial network

Abstract Under the influence of information technology innovation, the empowerment of 5G and industrial internet in the steel industry has gradually expanded from production assistance to industrial control. In this paper, a deep integration network of 5G and industrial control is constructed, and a virtualization PLC(vPLC) system solution deployed on private cloud servers is proposed. Secondly, IoT protocols and security policies for cloud control are designed. Finally, the proposed scheme was successfully applied to the remote control of equipment in the steelmaking production process of a certain steel enterprise. At the same time, the real-time performance, reliability and stability of the 5G-enabled vPLC system were tested. The result indicated that the 5G industrial network can work stably with a delay of less than 10 ms and 99.99% reliability. The vPLC system ran continuously for 2000 hours and maintained stable control functions. This result can provide a research foundation and technical direction for achieving centralized control and one-stop production management in the future.

Дополнительное образование детей и молодежи в Кабардино-Балкарской Республике: история, проблемы, перспективы

The article is devoted to the analysis of the processes of formation and development of the regional system of additional education in the Kabardino-Balkarian Republic. The importance of the system of additional education for children and adolescents at the present stage is considered, as well as the main problems and current directions of its development in the short term. The five most important aspects are highlighted: educational work; early professional orientation for children and its support; modernization of the system of additional education; “networking” in the system of additional education; development of new general education additional programs. The features of the development of a technical direction in additional education for children and the current state of the problem of additional education for children with disabilities are considered.

Wheat Fusarium Head Blight Automatic Non-Destructive Detection Based on Multi-Scale Imaging: A Technical Perspective.

Fusarium head blight (FHB) is a major threat to global wheat production. Recent reviews of wheat FHB focused on pathology or comprehensive prevention and lacked a summary of advanced detection techniques. Unlike traditional detection and management methods, wheat FHB detection based on various imaging technologies has the obvious advantages of a high degree of automation and efficiency. With the rapid development of computer vision and deep learning technology, the number of related research has grown explosively in recent years. This review begins with an overview of wheat FHB epidemic mechanisms and changes in the characteristics of infected wheat. On this basis, the imaging scales are divided into microscopic, medium, submacroscopic, and macroscopic scales. Then, we outline the recent relevant articles, algorithms, and methodologies about wheat FHB from disease detection to qualitative analysis and summarize the potential difficulties in the practicalization of the corresponding technology. This paper could provide researchers with more targeted technical support and breakthrough directions. Additionally, this paper provides an overview of the ideal application mode of the FHB detection technologies based on multi-scale imaging and then examines the development trend of the all-scale detection system, which paved the way for the fusion of non-destructive detection technologies of wheat FHB based on multi-scale imaging.