bluuebunny/crossref_metadata_2025 huggingface dataset:
Use of VPN technology during marital state in Ukraine
Authors:   State University of Telecommunications, Lemeshko A. V.
Published: September 2023

Thanks to the continuous development of information technologies, especially the Internet and globalization, it was possible to make a huge leap in the development of data transmission and the availability of information among a large number of people. Now the Internet is the banner of a global virtual world with a lot of free information. The demand for it is constantly growing every day, which in turn encourages Internet service providers to constantly develop the market and improve data transmission technologies. Today it is difficult to imagine a world without free access to the Internet. But the authorities of some countries of the world at the legislative level limit access to various resources on the Internet, and this, in turn, quickly increases the demand for the use of technologies and services for hiding the actual location on the Internet, such as VPN. Some use VPNs to increase their anonymity on the Internet and gain access to government-blocked resources. Some use this technology to improve the protection of personal information. When choosing a service that provides access to a VPN, most users are guided by the quality of services and their price. The need for VPN services has grown several times since the beginning of the full-scale Russian invasion of Ukraine. Demand has increased due to the blocking of Ukrainian media resources in the temporarily occupied territories and the appearance of the Ukrainian IT army. VPN technology is protected by all modern standards. Data encryption, source authentication, hash verification are all an integral part of this technology, which in turn ensures the confidentiality of data transmitted on the Internet. In general, all this helps to increase the level of security of users’ personal data. Citizens of Ukraine, who remain in the temporarily occupied territories, to a greater extent, have access only to the Russian media space, due to the fact that Ukrainian resources are blocked, and communication operators are «jammed» and their infrastructure is destroyed. With the help of VPN services, they can get access to the Ukrainian media space.
Recommendation system for managing a Smart Home
Authors:   State University of Telecommunications, Zvenihorodskyi O. S.
Published: September 2023

Based on the results of the analysis of the history of development and the final stage of the smart home concept and data transmission methods, it can be concluded that the history of development has gone through a long and full of updates, finding the most optimal concept of operation. The chosen topic is currently particularly relevant, as the IoT concept can significantly improve many areas of our lives and help us create more convenient, smart and safe homes. The term “smart home” was first coined by the American Association of Homebuilders in 1984. With the invention of microcontrollers, the cost of electrical appliances was falling rapidly. The same organization noted that such a home is different from the usual one in its ability to ensure productive and efficient use of the working and living environment. Today, technology allows you to assemble home automation in a componentized manner: selecting only those smart home functions that the user really needs. Nowadays, the latest room management technologies appear every day. Even things that were previously seen only as beautiful interior items can now perform a number of multimedia or household functions. In the practical part, we evaluated the main characteristics of a software product designed to manage a smart home using cloud computing. Below is an analysis of various software implementation options in order to select the optimal one, taking into account both economic factors and product characteristics that affect performance and compatibility with hardware. For this purpose, we used a functional and cost analysis tool. A functional and cost analysis of the software was conducted. The use of remote control technology was investigated and modeled. The work included options for implementing significant economic alternatives. The comparison was based on labor, electricity, and capital costs. After the functional and cost analysis, the software is in development. After completing all the surface analyzes, it was found that the options for the server and client side programming languages are Javascript, and the use of the Amazon cloud platform and its virtual server is the most efficient goal.
Development of a method for searсhing for similar account In social networks based on cluster analysis
Authors:   State University of Telecommunications, Averichev I. M.
Published: September 2023

In recent decades, the number of Internet users has been growing significantly. At the same time, the number of people using social networks to communicate and receive information is growing. The active development of social networks has also had a significant impact on the advertising market, as the information about users collected by these networks allows advertisers to target ads with great precision, which has a significant impact on the growth of sales of goods and services. After all, by identifying similar accounts, you can easily determine that a product that one user likes is likely to attract another. In order to select the most appropriate method of cluster analysis for the chosen topic, a systematic analysis of cluster analysis methods was carried out. It has been analyzed that one of the approaches to finding similar accounts in social networks is to analyze accounts by certain characteristics and is widely used by modern companies that own social networks for targeted advertising. The analysis of clustering methods showed that there is no specific universal method for analyzing data clustering, which is why various clustering methods were analyzed and it was concluded that the improved k-means algorithm — k-means mini batch is best suited for finding similar accounts.
Determination of optimization criteria for a special­purpose infocommunication network management system
Authors:   State University of Telecommunications, Getmanets O. V. , Zakharzhevskyy A. H.
Published: September 2023

As of today, taking into account the realities of the war in the country and the prospects for the development of the special-purpose information communication network management system, it is possible to assert the presence of a stable trend of growth in the volume and improvement of the quality of telecommunication services provided. This leads to an increase in the quantity and quality of control information, which, in turn, leads to a disproportionate growth of the special purpose information communication network management system itself. The described trend determines the need to optimize the management system as part of a special purpose information and communication system. To solve this problem, it is necessary to define the optimization criteria for the management system of a special purpose information communication network. The characteristic features of the special purpose information communication network management system given in the article allow it to be considered a "big system". For such a "big system" the question of its optimization becomes urgent. Optimization can be considered both the optimization of the control system design process itself and the optimization of the operation of the control system. The determined directions of optimization are dependent on each other. The designed special purpose information communication network management system will have quality indicators that depend on the quality of development, resources and time spent, that is, on the optimality of the design process. On the other hand, the resources and time spent on the design of the control system will significantly depend on the expected quality parameters of the system. There are several ways to combine the partial criteria of the control system to obtain an integral generalized criterion, which will make it possible to implement a global synthesis of the control system taking into account all the selected partial criteria of the system. Thus, the paper presents a method of multi-criteria optimization of the management system of a special purpose information communication network. The external parameters of the special purpose information communication network management system, which are critical in modern conditions, are described: the amount of information, delay, survivability, functional flexibility, reliability and cost. The need to combine conflicting criteria such as the amount of control information, reliability, survivability, functional flexibility, latency, and cost is emphasized. The advantage of using multi-criteria optimization of the special-purpose information communication network management system compared to single-criteria optimization is shown.
Model structure of threats to resources of information and telecommunication networks as a basic asset of a critically important infrastructure facility
Authors:   State University of Telecommunications, Shavlovskyi Ya. S.
Published: September 2023

The paper classifies the models of cyberattacks aimed at computer networks and complexes and which represent the greatest threat. A classification based on the main trends in the practical implementation of cyberattacks is proposed. This approach is new for the classification of cyberattacks on computer networks and complexes that serve critical infrastructure objects and takes into account ten components of the threat cycle: from a comprehensive study of the object of influence to the implementation of a cyberattack.
IoT for Smart Cities and industry
Authors:   State University of Telecommunications, Yatsko H. V.
Published: September 2023

The article is devoted to the study of the application of IoT In ternet ofthings in the «Smart City» program; its advantages for managing the city with a purposeimproving the efficiency of public service. The paper describes the capabilities of IoT technology for «Smart City», which allow things and systems to communicate with each other, to transmit wireless network data without human intervention. The purpose of the program and the benefits of IoT technology for the «Smart City» are formulated. Proven relevance and history of creating IoT for «Smart City». The areas of use of IoT for city management are described and examples of its successful application in various cities and projects are given; the problem was formulated and succeededto solve with IoT technology for «Smart City». Project development prospects are given countries of the world, including Ukraine. In particular, statistics on the use of technology are given IoT for «Smart City» by «Delloitte» and McKinsey assessment. Including the above initiatives and platforms for smart cities designed to process and analyze the data they generate municipal devices and physical installations launched by such giants as Google, IBM, Cisco and Intel.
Comparison of the combined fuzzing algorithm based on mutation analysis with the fuzzing algorithm based on code coverage
Authors:   State University of Telecommunications, Samoylenko A. P.
Published: September 2023

This article presents a comparative analysis between the μ2 algorithm and the Zest algorithm using the same amount of time rather than inputs and comparison by metrics other than mutation analysis. The Zest algorithm, embedded in the JQF framework, prioritizes comprehensive code coverage by generating inputs that satisfy both structural and semantic requirements. In contrast, μ2 is an approach that expands the scope of coverage-guided fuzzing through the integration of mutation analysis, which, in turn, enables the generation of higher-quality test cases. The obtained conclusions confirm that mutation-based fuzzing requires more time for generating input data that ensures complete code coverage. The research has revealed that under equal conditions, the combined algorithm based on mutation analysis provides less overall code coverage compared to the code coverage-based algorithm. Furthermore, it is noteworthy that the approach of fuzzing guided by mutation analysis, such as the one exemplified by the μ2 algorithm, is relatively less explored in the existing body of research. In reality, the shortage of publications dedicated to the topic of fuzzing based on mutation analysis is evident from the limited references in fuzzing review papers. This gap in awareness might contribute to the restrained popularity of mutation analysis within the security research community and in software testing. Additionally, this article aims to enhance the visibility of mutation analysis among fuzzing researchers.
Party Diplomacy in China’s Foreign Policy: “CCP Dialogue with the World-2023”
Authors: Verchenko Alla
Published: September 2023

The Chinese Communist Party holds bilateral, regional, international meetings with representatives of the ruling and opposition political parties of the world (“Dialogues”) and considers them as a channel for strengthening the role of Chinese party diplomacy as a part of Chinese diplomacy as a whole, especially towards laying the foundation for building a “Community of the Common Destiny of Mankind”. The “Top Level CCP Dialogue with the World Political Parties” has been held since 2017 and replaced the less ambitious “CCP Dialogue with the World” held in 2014-2016. The leaders of the ruling parties, heads of states and governments began to take part in its work. “Dialogue — 2023”, like all previous meetings, discusses the role of the ruling party and its responsibility for the future of their country and the humanity. The key theme of the current “Dialogue” — “The path to modernization: the responsibility of political parties” was chosen to introduce to the world parties the concepts outlined by the 20th Congress of the CCP. CCP has informed the world parties about Chinese innovative proposals: “Global Modernization” that is a joint development for all mankind and “Global Civilization” that is an idea of respect for different civilizations, recognition of their equality, refusal to impose alien values, intensification of humanitarian exchanges. Xi Jinping t delivered a key speech. The online forum, held on March 15, 2023, was attended by representatives of 500 political parties from 150 countries and regions. New times pose new challenges, and China, moving to a high-tech model, shares its models with the world, at the same time shows willingness to help others in the future development. As during previous “Dialogue” forums, the CCP emphasized its role as a peace-loving major power that concerns for humanity, proposes a plan for collective cooperation in the field of development of human civilization, ways to establish an equitable world order against the systemic crisis of the Western idea of globalization.
Architecture of China’s Cyber Sovereignty Concept (Based on the Reports World Internet Conference “Sovereignty in Cyberspace: Theory and Practice”
Authors: Yankova Alexandra
Published: September 2023

Modern China shares the position that national security is impossible without network security. The state builds cyber diplomacy based on the traditional dominants of its foreign policy — inviolability of borders, non-interference, respect for sovereignty. Naturally expanding into the digital space, the last of them has acquired a new form of cyber-sovereignty, become an integral part of the Chinese discursive force and the cornerstone of the PRC’s approach to global Internet governance. Beijing, not satisfied with the current unfair digital world order and concerned about the need to ensure constant control over internal networks for the regime security, advocates institutional reform of the existing system of global cyberspace governance. Over the past two decades, the state has turned from a recipient into a creator and propagandist of cyber norms. The cases of Chinese regulatory entrepreneurship attract an increasing number of supporters, primarily among developing countries. Several major initiatives, including the World Internet Conference, the Community with a Shared Future in Cyberspace, the Digital Silk Road, have become the personification of China’s competitive strategy in this direction. All of them aim to convey to an international audience a concrete message about China’s intention to adhere to cyber sovereignty in all foreign policy affairs and a call to formalize this principle as a confirmation of the state’s right to manage the Internet at their discretion. Based on primary sources, the article attempts to trace the origins of the PRC’s cyber sovereignty concept, analyze its evolution, institutional design, goal setting, content, limitations, and using the construction of an object-oriented architecture to present it as a three levels system, visualized for a better understanding of the links between levels.
Acknowledgements:
 
The author expresses gratitude to her supervisor, Vasily B. Kashin, Ph.D. (Political Sciences), Director of the Centre for Comprehensive European and International Studies (CCEIS) at the HSE University, for his assistance.
The Second Russia – Africa Summit and Economic and Humanitarian Forum: New Global Architecture
Authors: Andreeva Tamara A.
Published: September 2023

The article explores issues high on the agenda of the second Russia – Africa Summit and Economic and Humanitarian Forum. The authors give an overview of thematic sessions, important political agreements, summarize the main results of the Summit and Forum, and discuss the provisions of the final declaration.
Guided by Irina Abramova, Director of the Institute for African Studies of the Russian Academy of Sciences, the authors took part in the preparation of a number of sessions and materials for the Forum. The article details the most important work of the entire Institute in this area. The authors conclude that the scale of the Second Summit and Forum is determined not only by the number of participants and signed agreements, but also by the geopolitical significance of the event in a broad international context and contribution to the formation and establishment of a more equitable architecture of the world order.
African countries, as well as the African Union (AU), are increasingly loudly and clearly declaring their international agency, which is in the interest of Russia. The main political issues raised during the Summit and Forum, such as international agency, fight against neocolonialism and strive for multipolarity, will determine the agenda of Russia – Africa cooperation in the long term.
Transformation of Education in Cote d’Ivoire: Issues and Perspectives
Authors: Danilova Larisa N.
Published: September 2023

At the turn of the centuries, Cote d’Ivoire experienced a very difficult economic crisis and a civil war, which determined its development for the future decades. Social institutions of this state have been little studied in scientific literature abroad and in Russia but its education is definitely worth studying. However, education is an institution which reflects complexities of internal transformations in the country, and this social ontogenesis in the Republic of Cote d’Ivoire is determined by specifics of the colonial past, demography, economic structure and political events. What are development trends of the Ivorian educational system, what problems does it solve and what tasks does it pursue at present, since 2010?
By studying official materials of educational departments, the regulatory framework, national statistics, opinions of Ivorian and foreign researchers, taking into account knowledge about the cultural and historical foundations of the state, the article highlights some problem areas of education since the beginning of the 2010s, their reflection in educational policy and the current state of Cote d’Ivoire’s school.
ШЛЯХИ УДОСКОНАЛЕННЯ ЛОГІСТИЧНОЇ ДІЯЛЬНОСТІ ПІДПРИЄМСТВ
Authors: ГУМЕНЮК Алла , БІЛОШКУРСЬКА Наталія
Published: September 2023

Визначено, на сьогоднішній день особливо актуальними залишаються проблеми логістичної діяльності підприємств, оскільки від цього залежить не тільки ефективне функціонування будь якого підприємства, а й його конкурентоспроможність на ринку.

Встановлено, що введення карантину, а згодом і військового стану у нашій країні змусило економіку переналаштуватися на інший режим роботи. Проте є сфери які не можуть повністю перейти у дистанційний режим, зокрема це виготовлення та реалізація товарів першої необхідності, доставка продуктів харчування та ліків до територій наближених до військових дій. Перехід на максимально можливий дистанційний режим роботи, не може вирішити проблему, тому продовжує здійснюватися доставка вантажів, персональних замовлень споживачів. Проаналізовано основні завдання логістики, організацію логістичної системи та представлено шляхи удосконалення логістичної системи.
Neoadjuvant Chemotherapy in Nasopharyngeal Carcinoma
Authors: Sabeeh Al-Rawaq Khudair J.
Published: September 2023

Back ground: nasopharyngeal carcinoma is rare in Iraq and the treatment of this tumor is usually by radiotherapy and chemotherapy.Objectives: this study was conducted to estimate the effect of neoadjuvant chemotherapy in Iraqi patients with nasopharyngeal carcinomaPatients and methods: This study included sixty patients already diagnosed with nasopharyngeal tumors who attended the department of oncology in Baghdad teaching hospital during the period from January 2009 to December 2010,50 patients of them were treated by using combination chemotherapy in the form of Paclitaxel,5Flurouracil and cisplatinol for 4 courses prior to radiotherapy. Neoadjuvant chemotherapy was given due to advanced stage at presentation and due to long waiting list for radiotherapy which takes at least 6 months.10 patients were excluded from the study due to different reasons.Results: About half of the patients had partial response to neoadjuvant chemotherapy,only 8 patients (16%) had complete response, 12 patients (24%) did not show any response and 5 patients (10%) have progressive disease during the course of neo adjuvant chemotherapy.Conclusion: Neoadjuvant chemotherapy is beneficial in the management of Nasopharyngeal Cancer regarding local control and overall response rate.
Accuracy and safety of CT guided transthoracic needle biopsy
Authors: Nema Mustafa , Fadhil Atheer A.
Published: September 2023

Background:Image guided transthoracic needle biopsy (TTNB) has great diagnostic value for the definitive characterization of lung lesions and is an established primary procedure to diagnose pulmonary nodules. It is traditionally performed as an outpatient procedure. It is safe, accurate, sensitive, and can obviate surgical procedure.Objective: to assess the accuracy and safety of CT-guided TTNB in Baghdad Teaching Hospital Patients & Methods: From December 2009 to September 2011, we conducted a prospective study of 43 consecutive outpatient and inpatient lung biopsies. An informed consent was obtained from the patients. No sedation is required. All biopsies were performed using CT guidance without CT fluoroscopy and were performed under local anesthesia using a 16 gauge core biopsy needle with internal automated gun. A posteroanterior inspiratory CXR was obtained 30 minutes after biopsy. All complications were recorded. If there was no pneumothorax, the patient was discharged. If there was a small asymptomatic pneumothorax, serial radiographs has been performed, patients also were discharged if no change in size was noted.Results: A total of 43 patients underwent CT guided TTNB of peripheral lung lesions (mean age 60 years) and a male to female ratio of 28:15. The operation was successful in 40 out of 43 patients. The sample was adequate in 39 out of 43 patients. Complications were recorded in 4 patients (the most common complication was pneumothorax). No patient needed chest tube insertion.Conclusion: CT guided TTNB is safe and an accurate procedure and can be performed as an outpatient procedure under local anesthesia.
A Seam Tracking Algorithm Utilizing Spatio-Temporal Information of Laser Vision in Thin Plate Butt Welding for Shipbuilding
Authors: Wei Naikun , Yin Xuyue , Li Zufa , Xi Juntong , Yang Rundang , Kong Ning
Published: September 2023

Thin plates constitute more than 80% of the structural components in shipbuilding, and butt welding is an essential technological process in ship manufacturing. Different from general butt welding, thin plate welding for shipbuilding is characterized by long length (≥ 15 m), narrow seam width (≤ 1 mm), and high precision demands (≤ 0.5 mm). The clamping deformation, arc sparks, and noise pollution during the welding seriously affect the tracking precision in automated welding. To address this problem, this paper presents a seam tracking algorithm combining image processing techniques and spatiotemporal tracking data filtering techniques to acquire a steady and smooth torch trajectory with less position variation. In the image processing stage, a spatiotemporal density mask image processing method is proposed to preserve effective pixels in spatiotemporal laser images to resist noises and improve the accuracy of welding point position estimation. Experimental results show that the frequency of the proposed seam tracking method can reach 30 Hz, the average absolute tracking error is less than 0.25 mm, and the maximum tracking error is less than 0.4 mm. The welding torch runs more smoothly during welding thus leading to higher welding quality.
Simulation and Analysis of Plunger-Type Robot’s Rubber Cylinder Structure Based on Fluid-Solid Coupling
Authors: Wang Yong , Li Chao , Cao Xiuquan , Xie Zuozhou , Pan Ruizhi
Published: September 2023

The friction characteristics between the rubber cylinder and the oil tube wall significantly impact the service life and drainage performance of the plunger-type robot. This issue poses a critical technical challenge that must be addressed to promote and apply plunger robot technology. This study focuses on investigating the influence of various structural parameters of the rubber cylinder on the sealing performance of the robot cylinder. By employing a simulation approach that integrates fluid-solid coupling within the rubber cylinder structure, we examine the effects. The findings demonstrate that the rubber cylinder with W3G1.5 structural parameters exhibits more even force distribution and lower average contact friction stress.
Health Status Evaluation of the Power Unit Reducer of the Scraper Conveyor
Authors: Liu Yuxuan , Fan Shifeng , Fu Ruihua , Jiao Rui , Guan Qing
Published: September 2023

The paper is based on the improved Analytic Hierarchy Process and immune principle to evaluate the health status of the power reducer of the front scraper conveyor underground. Firstly, select relevant indicators of the reducer and establish an immune model. The traditional Analytic Hierarchy Process is used to calculate the initial weights of each indicator. Then, the fuzzy statistical method is used to improve the indicator weights obtained by the Analytic Hierarchy Process and calculate the membership degree. Finally, the health status evaluation results of the reducer are obtained. Based on case analysis, the proposed method can effectively complete the assessment of target health status.
Numerical Simulation of the Effect of Laser Power on the Temperature Field in Selective Laser Melting
Authors: He Longchao , Bai Ruixiang , Lei Zhenkun , Li Qian
Published: September 2023

Finite element modeling of the thermal analysis of the temperature field during Selective Laser Melting process, this paper simulates the distribution, which the temperature field at different power levels. The finite element model overcomes the problems of difficult in obtaining the material temperature field and temperature evolution during machining. The model uses boundary conditions in the machining area and material properties are more closely match the actual machining conditions. The Gaussian heat source load is solved by using a moving heat source and decomposing the whole process into several time steps to obtain the three-dimensional temperature field distribution, in order to research the point, that the process parameters effect on the temperature field.
Micro-Structure and Properties of Aluminum Alloy Made by Arc Additive of Al-Si Alloy
Authors: Hu Xin , Zhao DongSheng , Niu TangRen , Long DaiFa
Published: September 2023

The silicon element can increase the fluidity of the molten metal and the corrosion resistance of the welding wire in the welding process. The components formed by the accumulation of aluminum alloy wire with different silicon content have different micro-structure and properties. By using TIG welding method and taking ER4043 and ER4047 welding wire as the research object, multi-layer fuses stacking test was carried out on 4043 aluminum alloy substrate. Comparing the micro-structure and mechanical properties of two different welding wire additions, it was found that the grain size and lattice type of 4047 micro-structure were more uniform, and the α-Al phase and Al-Si eutectic phase were mainly formed. In the 4043 micro-structure, α-Al and Al-Si eutectic forms mainly columnar crystals and a small number of reticular crystals. The average tensile strength of 4047 is 35.91 MPa higher than that of 4043. The average fracture elongation of 4047 print specimen is 6.72% lower than that of 4043 print specimen. The test shows that the tensile strength of 4047 arc additive is higher than that of 4043 arc additive, but the shape of the component is decreased.
Mechanical Characterization of Laminated Carbon Fiber Reinforced Polymer
Authors: Lu Guangchen , Ma Yinhang , Wu Minyang , Yang Boshuo , Liu Liu , Yang Fujun
Published: September 2023

Experimental method was employed to investigate mechanical characterization of carbon fiber reinforcement polymer (CFRP) composite beams at different temperatures. The experimental research is mainly based on the vibration response measurement by using the technique of electronic speckle pattern interferometry (ESPI), which can provide visualization of vibrating information represented as fringe patterns. The first ten order of out-of-plane mode shapes and natural frequencies at different temperatures are obtained by ESPI method. Based on the Euler-Bernoulli beam theory, the flexural moduli of the CFRP laminate was determined. The changes in the vibration response and modes of 0 degree off-axis CFRP beams at different temperatures has been investigated in this paper.
Research on the Effecting Factors of Copper Coating on Continuous Alumina Fiber Surface
Authors: Wang Yingchun , Ma Xiaomin , Zhai Changsheng , Zhang Zhongwei , Lin Mengjie , Lu Guotong , Jiang Shiquan , Zhang Jian , Meng Xiangxu
Published: September 2023

This article introduced an chemical copper plating process on the continuous Al2O3 fiber, which could be used to improve the wettability between metal and ceramic fibers. Then, the effecting factors were studied through the weight gaining ratio, the resistance value as well as the morphology of the copper coatings. The results show that: Firstly, the core@shell structure of the coating (Al2O3f@Cu) is definitely prepared by the chemical plating process; Secondly, when the electrolyte consists of CuSO4 as the main salt, NaKC4H4O6 as the complexing agent, CH2O as the reducing agent and the KOH 9g/L, the copper coating is perfectly impact and homogeneous with the weight gaining ratio of 31% and the resistance value of 0.2 Ω/cm.
Discussion on the Design Points of Railway Cross the Urban Road
Authors: Gu Lei , Wang Wenbo
Published: September 2023

Due to historical reasons, most developing countries such as the People’s Republic of China were founded and developed after World War II. Due to the late development of modernization and urbanization, they did not incorporate the mature urban planning concepts of Western developed countries. At the same time, due to the limitations of urban population, economic scale, and insufficient expectations for urban development, early railway projects were often built on the edge of the city, without leaving sufficient development space for the city. After China’s reform and opening up, rapid urbanization has led to the continuous expansion of the city scale. The built railways inevitably cut into cities, resulting in an increasingly prominent contradiction between urban development and railway engineering. Taking the Dujiagou Interchange Project of Zhongwei Lanzhou High Speed Railway as an example, this paper expounds the advantages and disadvantages of different bridge structures due to the limitations of existing railway projects and terrain, providing reference significance for the planning and design of similar projects in the future.
Vulnerability Analysis of Steel Tube Towers with Loose Bolts Due to Wind Hazards
Authors: Li Xiang , Meng Xiangjunwei , Zhang Donglei , Tian Jiangbo , Zhao Zhenhua , She Kai , Nan Yang , Jiang Wenqiang
Published: September 2023

EHV transmission lines are characterized by high voltage levels and large transmission capacity, and their safety is related to the normal operation of the power system. The UHV steel pipe tower is an important support structure for the transmission line, which is itself highly flexible, making it more sensitive to the action of wind loads and prone to wind-damaged collapse accidents. The mechanical properties of the bolt connection nodes in transmission towers can directly affect the static and dynamic response of the structure, which in turn affects the wind vulnerability of transmission towers. Therefore, the analysis of wind damage vulnerability of EHV steel pipe towers considering the loosening of bolted connections has important engineering application value.
Investigating the Diffusion of Chloride Ions and Oxygen in Coral Concrete Under Stress
Authors: Tang Hongbin
Published: September 2023

In this study, the transport of chloride ions and oxygen in coral aggregate seawater concrete (CASC) was examined under realistic working conditions. The concrete specimens were subjected to pre-applied compressive strengths of 0%, 25%, 45%, and 65%. The diffusion coefficients of oxygen gas in the CASC were determined by different loads, and the diffusion of chloride ions was also analyzed. The concrete was subjected to continuous loads of 0%, 10%, and 20% of their maximum compressive strength and the chloride ion content was measured after being exposed to seawater erosion. The results showed that the diffusion of oxygen concentration follows the pattern of initial rapid and then gradual decline, the higher the load, the more microcracks are generated, resulting in a larger diffusion coefficient of oxygen. Chlorine ions and oxygen have similar diffusion patterns.
Experimental Study on Basic Mechanical Properties of SiO2 Modified Basalt Fiber Concrete
Authors: Zhang Xiaofei , Liu Yuting , Zhang Bo , Wei Peipei
Published: September 2023

The tensile performance of concrete is not good. In order to explore the improvement effect of highly active Nano-SiO2 (NS) particles on the basic mechanical properties of Basalt fiber (BF) concrete. BF particles with high cost performance and NS particles with high activity were added into concrete in the way of single and mixed, respectively. The compression and splitting tensile test were performed, and the microstructure and failure mechanism of concrete were analyzed by electron microscopic experiment. The results show that the increase rate of compressive strength and splitting tensile strength of BF doped concrete is up to 4.31% and 13.41% respectively. The increase rate of compressive strength and splitting tensile strength of single-doped NS concrete is up to 8.9% and 5.43% respectively. The maximum increase rate of compressive strength and splitting tensile strength of BF and NS concrete is 16.29% and 23.91%, respectively. According to the results of microscopic microscopy, the mixing of BF and NS can greatly improve the mechanical properties of the foundation, because the integrity of concrete is enhanced after the incorporation of NS, which makes the bond between BF and cement mortar close, and thus improves the compressive and splitting tensile strength of basalt fiber concrete.
Analysis of the Effect of Vibroflotation Reinforcement with Backfill Sand in Adjacent Wharf Area
Authors: Wu Kunpeng , Zhu Mingxing , Zhang Jinghong , Mao Fengshan , Wen Youpeng
Published: September 2023

In recent years, with the further promotion of the national development strategy of the “Maritime Silk Road”, more and more projects have encountered high fine particle content backfill sandy soil foundations (fine particle content exceeds 10%), which generally use the more economical and efficient vibroflotation method. The method of combining numerical analysis, indoor test and field test is adopted to study the vibroflotation layout form, influence scope, fine particle content and other issues affecting the project, which can provide some reference for the design and construction of similar projects in the future.
Blasting Crater Test and Application Based on Digital Section Measurement Method
Authors: Hou Tianfeng , Jiang Zhiming
Published: September 2023

In order to reduce the labor intensity and human subjective error of the artificial scale of the Simpson method to measure the distance between each section of the blasting funnel and the distance between the pre-explosion and post-explosion measurement points, in the series blasting funnel test of the Jinchanghe mine, based on the characteristic of the tunnel laser profiler on the basis of measuring the current section, the pre-explosion (post) data of each measurement section was measured, and then it was imported into the 3Dmine software three-dimensional model to calculate the blasting funnel volume, and the relationship curve diagram and fitting analysis were drawn using Origin. Reasonable rock drilling and blasting parameters for large-diameter deep hole mining in underground mines are proposed, which lays a solid technical foundation for the production of mines. The recommended drilling and blasting parameters are: the spacing between the middle hole and the side hole is 2.6 m; The row spacing between the middle hole and the side hole is 2.8 m and 2.6 m, respectively; layered collapse height height 2.6 m; The unit consumption of explosives is 0.46 to 0.51 kg/t.
Laboratory Test on the Dynamic Response of Slopes Under Dynamic Compaction
Authors: Tao Yaodong , Shen Haijun , Liu Ti , Cui Pengcheng , Cao Kun , Hu Anfeng
Published: September 2023

To ensure long-term stability and safety of ultra-high-voltage substations situated in mountainous areas, it is necessary to undertake slope foundation treatment. Indoor model tests were conducted to investigate the mechanism of slope foundation reinforcement under dynamic compaction. In the tests, the deformation characteristics and dynamic response characteristics of natural slopes during dynamic compaction were studied by grouping tests with controlled hammer weight and drop height. The results show that the effective influence range of soil vibration caused by dynamic compaction is limited; the compaction settlement and acceleration tend to stabilize after the initial few blows; under the same compaction energy level, the effect of hammer weight on compaction settlement is more significant than that of drop height; ramming at the top of the slope causes a significant increase in horizontal displacement at the top and middle of slope, with a smaller effect on the slope toe. These experimental findings can provide a reference for the design of slope foundation reinforcement schemes and construction process control.
SBRT (Stereotactic Body Radiotherapy) in Recurrent Head Neck Cancer - Boon or Bane?
Authors: Basu Trinanjan
Published: September 2023

Stereotactic body radiotherapy (SBRT) has emerged as a potential treatment approach for recurrent head and neck cancers, but its role remains controversial. This concise clinical perspective summarizes the current evidence on SBRT for recurrent head and neck cancers and discusses key considerations regarding appropriate patient selection, treatment planning, toxicity risks, and combination with other therapies. The author concludes that SBRT may provide benefits for select recurrent head and neck cancer patients, but more research is still needed to determine optimal use.
A Study for Estimation of Greenhouse Gas Emissions of Cotton in Central Greece
Authors: Engonopoulos Vassilis
Published: September 2023

Cotton is an economically important crop in Greece, but few reports have systematically quantified the greenhouse gas emissions of Greece’s cotton production and analyzed its causes. This study used the Cool Farm Tool (CFT) to identify the main components and driving factors of greenhouse gas (GHG) emissions of cotton production in Greece between 2020 and 2021 based on statistical data. The results showed that GHG emissions per unit region of cotton in Central Greece (Sterea Hellada and Thessaly) reached 2,126.10 kg CO2-eq ha-1 or 460.8 kg CO2eq t−1 yield, respectively. From 2020 to 2021, GHG emissions increased by 107.7 kg CO2-eq ha−1 or 32.9 kg CO2 eq t−1 yield due to increased number of irrigations and pesticide applications because of extremely high temperatures during the flower to open boll period. The multiple regression model showed that fertilizers were the main influence on carbon emissions. Improving the efficiency of cotton fertilization and ensuring the high-quality development of the cotton industry are effective strategies to reduce the carbon footprint of cotton cultivation in the future.
Підготовка майбутніх адміністраторів сфери підприємництва у закладі професійної (професійно-технічної) освіти
Authors: Уклеїна Лілія
Published: September 2023

У статті охарактеризовано організацію проведення експериментальної роботи, доведено ефективність моделі управління підготовкою майбутніх адміністраторів сфери підприємництва у ЗП(ПТ)О шляхом представлення результатів дослідження та наведено методичні рекомендації щодо практичного її впровадження в освітню практику.Метою дослідження є розробка та апробація моделі управління підготовкою майбутніх адміністраторів.Педагогічний експеримент було здійснено у період з 2018 до 2021 рік включно. Він містив три взаємозумовлених та повязаних етапи: констатувальний, формувальний, узагальнювальний. До проведення експериментального дослідження було залучено однаковий кількісно-якісний склад респондентів з урахуванням стажу роботи, кваліфікації, форми навчання, що забезпечило вичерпне відображення генеральної сукупності, сформувало вибіркову сукупність та забезпечило її репрезентативність для проведення статистичної обробки даних.
Технологія прогнозування і проєктування варіативного складника освітньої програми гімназії та/або ліцею у процесі внутрішньошкільної науково-методичної роботи
Authors: Пузіков Дмитро
Published: September 2023

У статті охарактеризовано розроблену автором технологію прогнозування і проєктування варіативного складника освітньої програми гімназії та/або ліцею у процесі внутрішньошкільної науково-методичної роботи. Технологію визначено як засіб діяльності, який охоплює інструментарій (скоординовану сукупність методів та прийомів, засобів) і алгоритм (доцільну послідовність етапів та процедур) створення оптимального варіативного складника освітньої програми в системі внутрішньошкільної науково-методичної роботи. У системи науково-методичної роботи школи вона розглядається як підсистема (компонент), який виконує низку пов’язаних із цим функцій: інформаційну, інтеграційну, регулятивну, організаційну, координаційну, мотиваційну, освітню і самоосвітню. У компонентному складі технології виокремлено суб’єктну, об’єктну, цільову, змістову, інструментальну, результативну підсистеми. Алгоритм технології передбачає виконання низки послідовних етапів, а саме: організаційно-розпорядчого, підготовчо-мотиваційного, діагностувально-прогностичного, проєктувально-конвенційного, упроваджувально-реалізаційного, оцінювально-результативного, коригувально-організаційного. Кожен із вказаних вище етапів має свої завдання, зміст, засоби, очікувані проміжні результати. Перспективи подальших досліджень пов’язані з експериментальною апробацією і широким упровадженням означеної вище технології в системі науково-методичної роботи вітчизняних закладів загальної середньої освіти.
"You Must Prophesy Again": The Mission of God's People in Revelation 10-14
Authors:   ,   Andrews University, Aguiar Adenilton
Published: September 2023

The primary task of this study was to delineate the theology of mission in the book of Revelation, with a focus on chaps. 10–14 and special attention to the people of God as participants in the mission of God. The historical survey demonstrated that the theology of mission conveyed by the book of Revelation is a topic broadly neglected in recent scholarship and, hence, requires an in-depth treatment. The object of research was addressed from a biblical-theological perspective by means of an exegetical analysis of relevant passages and key terms that were identified on the basis of a semantic field approach. Nine semantic fields of mission in Revelation, including their elements, were listed. This fact alone demonstrates that Revelation has more to say about mission than one could think on first reading. There is more on mission in Revelation than one could identify by searching only for sending terminology. Mission, in this sense, refers to God's initiative to bring humanity back to him by means of agents divinely commissioned. In Revelation, God uses his end-time people to present the last message of warning to this world. This study demonstrates that Revelation 10–14 focuses on the commission of the end-time church, God's remnant. The commission itself is found in 10:8–11:2. Revelation 11:3–13 shows how such a commission is accomplished, and Revelation 14:6–13 presents the content of the end-time message to be proclaimed to the world. In turn, Revelation 12–13 indicates that the cosmic conflict between God and Satan is the theological background underlying the missionary activity of God's end-time people. More particularly, this section of the book shows that mission is accomplished amid severe opposition by Satan and his allies on earth. Finally, this study has pointed out that the heavenly announcement in 11:15, "The kingdom of the world has become the kingdom of our Lord and of his Christ, and he shall reign forever and ever" points to the fulfillment of all God's covenantal promises and, hence, the completion and triumph of God’s mission through the establishment of his everlasting kingdom. Thus, Revelation presents the final chapter of the beautiful story of the missio Dei!