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Discussion on the Soil and Water Conservation Model in Mountain Photovoltaic Power Generation Project

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Asian Agricultural Research 2024年第10期16卷 28-31,37页

作者： Aijun LIN Junwen TANG Zhejiang Huadong Engineering Consulting Co. Ltd.Hangzhou 310030China

In the context of rising global energy demand and increasing awareness of environmental protection,photovoltaic power generation,as a clean and renewable form of energy,has become increasingly important and has received widespread attention and application ***,during the construction and operation of mountain photovoltaic power generation projects,water and soil erosion has become a major challenge,which not only restricts the sustainable development process of the project,but also has a significant negative impact on the local ecological *** article deeply analyzes the multiple causes,extensive impacts and effective prevention and control strategies of water and soil erosion in mountain photovoltaic power generation *** results show that rainfall intensity,terrain slope,soil type and vegetation coverage are the four key factors leading to soil *** erosion not only causes a sharp decline in soil fertility,but also aggravates the problem of sediment deposition in rivers and reservoirs,and poses a direct threat to the stability and operating efficiency of photovoltaic *** order to deal with the above problems,this paper innovatively puts forward a series of soil and water conservation technologies,covering multiple dimensions such as engineering measures,plant measures,farming measures and temporary measures,and deeply discusses the application models and management strategies of these measures in key stages such as planning and design,construction,operation and *** specific case analysis,the successful practical experience of soil and water conservation is refined and summarized,and the key role of community cooperation,technical support and modern monitoring technology in preventing and controlling soil and water erosion is further *** article aims to achieve a win-win situation of ecological environment protection and energy development and utilization through scientific planning and

关键词： Mountain photovoltaic power generation Soil erosion Prevention and control measures Sustainable development

Operation optimization of prefabricated light modular radiant heating system:Thermal resistance analysis and numerical study

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Journal of Central South University 2024年第6期31卷 1983-1997页

作者： LI Yao HU Ru-kun XIN Li XUE Jie HUANG Fei XIA Jian-wei YANG Xiao-hu China Northwest Architecture Design and Research Institute Co. Ltd.Xi’an 710061China Institute of Building Environment and Sustainability Technology School of Human Settlements and Civil EngineeringXi’an Jiaotong UniversityXi’an 710049China Shaanxi Yuanqing New Building Materials Co. Ltd.Xi’an 710054China

The utilization of prefabricated light modular radiant heating system has demonstrated significant increases in heat transfer efficiency and energy conservation *** prefabricated building construction,this new heating method presents an opportunity for the development of comprehensive *** parameters for evaluating the effectiveness of such a system are the upper surface layer’s heat flux and *** this paper,thermal resistance analysis calculation based on a simplified model for this unique radiant heating system analysis is presented with the heat transfer mechanism’s *** results obtained from thermal resistance analysis calculation and numerical simulation indicate that the thermal resistance analysis method is highly accurate with temperature discrepancies ranging from 0.44℃ to−0.44℃ and a heat flux discrepancy of less than 7.54%,which can meet the requirements of practical engineering applications,suggesting a foundation for the prefabricated radiant heating system.

关键词： radiant heating system thermal resistance analysis simplified model numerical simulation heat flux temperatur

Understanding the Resilience of Urban Rail Transit:Concepts,Reviews,and Trends

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Engineering 2024年第10期41卷 7-18页

作者： Yun Wei Xin Yang Xiao Xiao Zhiao Ma Tianlei Zhu Fei Dou Jianjun Wu Anthony Chen Ziyou Gao Beijing Mass Transit Railway Operation Corporation ltd. Beijing 100044China School of Systems Science Beijing Jiaotong UniversityBeijing 100044China Traffic Control Technology Corporation ltd. Beijing 100160China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong Kong 999077China

As the scale of urban rail transit(URT)networks expands,the study of URT resilience is essential for safe and efficient *** paper presents a comprehensive review of URT resilience and highlights potential trends and directions for future ***,URT resilience is defined by three primary abilities:absorption,resistance,and recovery,and four properties:robustness,vulnerability,rapidity,and ***,the metrics and assessment approaches for URT resilience were *** metrics are divided into three categories:topology-based,characteristic-based,and performance-based,and the assessment methods are divided into four categories:topological,simulation,optimization,and *** of various metrics and assessment approaches revealed that the current research trend in URT resilience is increasingly favoring the integration of traditional methods,such as conventional complex network analysis and operations optimization theory,with new techniques like big data and intelligent computing technology,to accurately assess URT ***,five potential trends and directions for future research were identified:analyzing resilience based on multisource data,optimizing train diagram in multiple scenarios,accurate response to passenger demand through new technologies,coupling and optimizing passenger and traffic flows,and optimal line design.

关键词： Urban rail transit Resilience assessment Resilience improvement Network disruption

Super retina TFT based full color microLED display via laser mass transfer

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Science China(Information Sciences) 2024年第11期67卷 5-19页

作者： Xu YANG Jinchai LI Xuhui PENG Chunfeng ZHAO Chao CHEN Xiaowei ZHANG Jinliang LIN Donghua LI Yuefen CHEN Zhaoxia BI Feng QIN Cheng LI Kai HUANG Junyong KANG Rong ZHANG Fujian Key Laboratory of Semiconductor Materials and Applications CI Center for OSEDEngineering Research Center of Micro-nano Optoelectronic Materials and Devices Ministry of EducationDepartment of Physics Xiamen University Future Display Institute of Xiamen Tianma Microelectronics Co. Ltd. School of Electronic Science and Engineering Xiamen University Tianma Advanced Display Technology Institute (Xiamen) Co. Ltd.

MicroLED display is considered one of the most promising technologies for next-generation displays. However, the high manufacturing cost has been a major obstacle to its accessibility to the general consumer market, and mass transfer, an essential process to achieve cost-effective manufacturing, has not yet reached commercial maturity. Critical issues, such as microLED chips, transfer equipments, and process materials, need to be addressed for the mass transfer technologies. In this work, we present a 1.63-inch full color microLED display module fabricated with laser mass transfer, which has a pixel density of 403 pixels per inch(PPI), the highest resolution ever achieved in the industry using mass transfer technologies. The laser mass transfer is realized with three process nodes: laser lift-off, laser induced forward transfer, and carrier bonding. Each node has been well explored to improve yields. Insights into the present progress and the future development of the laser mass transfer will be shared in this work.

关键词： microLED mass transfer LLO chip on wafer chip on carrier

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Analysis of Bridge Inspection Technology for Highway Reconstruction and Expansion

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Journal of World Architecture 2024年第1期8卷 40-44页

作者： Xu Meng Bo Liu Ji Li Zhi Tu China Merchants Chongqing Highway Engineering Testing Center Co. Ltd.Chongqing 400060China Chonging Construction Science Research Inspection and Testing Co. Ltd.Chongqing 400060China

This article focuses on bridge testing technologies in highway construction and expansion *** provides an overview of the inspection process for bridges in highway reconstruction and expansion projects,the main inspections,and strategies for improving the quality of *** units should conduct bridge inspections using appearance inspections,special inspections,and bearing capacity assessments in highway reconstruction and expansion *** effectively improve testing quality,relevant units should also focus on establishing and improving testing standards,strengthening material testing,and improving the overall quality of the testing *** research aims to enhance the quality of highway reconstruction and expansion projects by supporting the sensible application of bridge inspection technology.

关键词： Expressway Reconstruction and expansion Bridge engineering Detection technology

Characteristics and Insights of Offshore Oil and Gas Exploration and Development Investment

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China Oil & Gas 2024年第1期31卷 27-35页

作者： Liu Mingming Li Shufeng Zhao Lin China University of Petroleum Beijing China National Oil and Gas Exploration and Development Company ltd.

The oceans'vast expanse has given rise to copious oil and gas resources,with recent years witnessing a steady unlocking of offshore oil and gas potential,positioning them as a key successor in global energy ***,offshore oil and gas extraction constitutes nearly a third of the world's oil and gas *** segment has evolved into a mutually beneficial ecosystem where operators and service providers collaborate closely around exploration and development *** in offshore oil and gas typically follows a dual "one-third’"pattern,reflecting high upfront costs but promising *** also underscores the stark variations in project viability and regional economic efficiency,with monopolistic traits seen at both national and corporate *** has emerged as a key tactic for resource-rich countries and oil companies to advance their offshore *** the distinct nature of offshore oil and gas development,Chinese oil companies are advised to seize opportunities in marine exploration,emphasize the coordination and planning abilities of the global supply chain,focus on the reserves of offshore oil and gas development technologies,as well as the capabilities of commercial talents and other forms of support,courageously pursue significant offshore assets,and effectively utilize global technology,equipment,and expertise,and rapidly build a competitive edge in offshore oil and gas projects.

关键词： companies venture offshore

Vision, application scenarios, and key technology trends for 6G mobile communications

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Science China(Information Sciences) 2022年第5期65卷 5-31页

作者： Zhiqin WANG Ying DU Kejun WEI Kaifeng HAN Xiaoyan XU Guiming WEI Wen TONG Peiying ZHU Jianglei MA Jun WANG Guangjian WANG Xueqiang YAN Jiying XIANG He HUANG Ruyue LI Xinhui WANG Yingmin WANG Shaohui SUN Shiqiang SUO Qiubin GAO Xin SU China Academy of Information and Communications Technology Huawei technologies Canada Co. Ltd. Huawei technologies Co. Ltd.(Hangzhou) Huawei technologies Co. Ltd.(Chengdu) Huawei technologies Co. Ltd.(Shanghai) ZTE Corporation Datang Mobile Communications Equipment Co. Ltd.

With the global commercialization of the fifth-generation(5G) network, many countries, including China, USA, European countries, Japan, and Korea, have started exploring 6G mobile communication network, following the tradition of “planning the next while commercializing one generation”. Currently,studies on 6G networks are at the infancy stage. Research on the vision and requirements for 6G is still ongoing, and the industry is yet to clarify the key enabling technologies for 6G. However, 6G will certainly build on the success of 5G. Therefore, developing high-quality 5G networks and seamlessly integrating 5G with verticals are the priorities before 2030, when 6G is projected to be commercialized. Also, global 5G standards will keep evolving to better support vertical applications. As a milestone, the Third-Generation Partnership Project(3GPP) published Release 16 in July 2020, which continuously enhanced the capabilities of mobile broadband service based on Release 15 and realized the support for low-delay and high-reliability applications, such as Internet of Vehicles and industrial Internet. Currently, 3GPP is working on Releases 17 and 18, focusing on meeting the demands of medium-and high-data-rate machine communication with low-cost and high-precision positioning, which will be published in June 2022. Thus, 6G networks will further expand the application fields and scope of the Internet of Things to accommodate those services and applications that are beyond the capabilities of 5G networks. Herein, we present our vision, application scenarios,and key technological trends for 6G networks. Furthermore, we propose several future research opportunities in 6G networks with regard to industrialization and standardization.

关键词： sixth-generation (6G) mobile communication holographic radio technology 6G vision application scenarios of 6G terahertz communication integrated sensing and communication integrated intelligence and communication ultra-massive MIMO reconfigurable intelligent surface co-frequency co-time full-duplex

Research on Integrated Communication Perception Technology Based on RIS Assistance

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Journal of Electronic Research and Application 2024年第4期8卷 94-100页

作者： Hao Yang Chuanjiang Wang Xiaoyi Li Qi Xiang Taoyong He Wuhan Ruisi Communication Technology Co. Ltd.Wuhan 430000Hubei ProvinceChina

Reconfigurable Intelligent Surface(RIS)assisted communication perception integration technology is an emerging communication technology that introduces reconfigurable intelligent surfaces in the communication environment to achieve real-time perception and control of signals,thereby improving the performance and efficiency of communication *** article studies the integrated communication perception technology assisted by RIS,including system principles,key technologies,and performance *** literature review and analysis of relevant research,the potential application prospects of this technology in future communication systems have been revealed.

关键词： RIS-assisted communication Perception integration Reconfigurable intelligent surfaces Performance analysis Application prospects

Advancements in machine learning for material design and process optimization in the field of additive manufacturing

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China Foundry 2024年第2期21卷 101-115页

作者： Hao-ran Zhou Hao Yang Huai-qian Li Ying-chun Ma Sen Yu Jian shi Jing-chang Cheng Peng Gao Bo Yu Zhi-quan Miao Yan-peng Wei National Key Laboratory of Advanced Casting technologies Shenyang Research Institute of Foundry Co.Ltd.CAMShenyang 110022China Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China Key Laboratory of Space Physics Beijing 100076China School of Materials Science and Engineering Nanyang Technological University639798Singapore

Additive manufacturing technology is highly regarded due to its advantages,such as high precision and the ability to address complex geometric ***,the development of additive manufacturing process is constrained by issues like unclear fundamental principles,complex experimental cycles,and high *** learning,as a novel artificial intelligence technology,has the potential to deeply engage in the development of additive manufacturing process,assisting engineers in learning and developing new *** paper provides a comprehensive overview of the research and applications of machine learning in the field of additive manufacturing,particularly in model design and process ***,it introduces the background and significance of machine learning-assisted design in additive manufacturing *** then further delves into the application of machine learning in additive manufacturing,focusing on model design and process ***,it concludes by summarizing and forecasting the development trends of machine learning technology in the field of additive manufacturing.

关键词： additive manufacturing machine learning material design process optimization intersection of disciplines embedded machine learning