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5th International Conference on Distance Education and Learning, ICDEL 2020

作者： Zhao, Yalu Hao, Shuying Yang, Lu Xia, Guofeng Hu, Wenhua Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control School of Mechanical Engineering Tianjin University of Technology Tianjin China National Demonstration Center for Experimental Mechanical and Electrical Engineering Education Tianjin University of Technology Tianjin China Chongqing Engineering Research Center for Advanced Intelligent Manufacturing Technology Chongqing China

ISBN: (纸本)9781450377546

In the engineering education accreditation system, it is clearly required that the major applying for certification should prove the achievement of graduation requirements with appraisal. The common appraisal methods of graduation requirements achievements (GRAs) focus on the whole situation of graduates, which lacks personalized guidance for students at school. Based on the analytical method of exam scores in the common methods, the paper presents the achievement of individual graduation requirements and designs algorithms to dynamically appraise every student with real examples, which may provide detailed data and immediate guidance for the major and its own students. The dynamic appraisal method can improve the GRAs of the major, and also can strengthen the core concepts of engineering education accreditation. © 2020 ACM.

关键词： Students

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Multi-scale pseudo-labels filtering and key pixels adversarial alignment for domain adaptive object detection

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Engineering Applications of Artificial Intelligence 2025年 157卷

作者： Wei, Xing Xia, Jiong Yang, Fan Zhao, Chong Liu, Cang Wang, Ge Chen, Yanke Lu, Yang School of Computer and Information Hefei University of Technology China Intelligent Manufacturing Technology Research Institute of Hefei University of Technology China Engineering Research Center of Safety Critical Industrial Measurement and Control Technology Ministry of Education China Anhui Mine IOT and Security Monitoring Technology Key Laboratory China

Domain Adaptive Object Detection (DAOD) aims to adapt a detector trained on the labeled source domain to perform effectively on the unlabeled target domain. Most existing DAOD methods commonly employ self-training strategy and adversarial learning. However, the methods based on the self-training strategy often generate unreliable pseudo-labels (e.g., missing detections and false positives) due to the absence of target domain semantics, resulting in suboptimal models. Meanwhile, aligning a large number of unimportant pixels hampers adversarial learning's ability to capture domain-invariant semantic information. Therefore, we propose the Multi-scale Adversarial Teacher Framework (MATF) based on the common self-training framework (teacher–student framework). Specifically, to mitigate the impact of unreliable pseudo-labels, we propose the Multi-scale Negatives Filtering (MNF) module in the teacher model, which prevents missing detections from damaging the model by filtering out unreliable negative samples at multiple feature scales. In addition, we propose the Multi-scale key-Pixel Discriminator (MKPD), which predicts the distributions of key pixels at multiple feature scales emphasizing the adversarial alignment of key pixels rather than unimportant pixels. Finally, to generate higher-quality pseudo-labels, we introduce the discriminator into the student model to reduce the model's bias towards the source domain. Unlike most methods, we construct our method on a computationally efficient but less work-intensive one-stage detector. Extensive experiments conducted on DAOD benchmark datasets such as Cityscapes, FoggyCityscapes, KITTI, and Sim10k demonstrate the strong adaptability and effectiveness of MATF. © 2025 Elsevier Ltd

关键词： Object detection

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Recent development of chemically complex metallic glasses: from accelerated compositional design, additive manufacturing to novel applications

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Materials Futures 2022年第1期1卷 9-31页

作者： J Y Zhang Z Q Zhou Z B Zhang M H Park Q Yu Z Li J Ma A D Wang H G Huang M Song B S Guo Q Wang Y Yang Department of Mechanical Engineering College of EngineeringCity University of Hong KongKowloon TongKowloonHong KongPeople’s Republic of China Shenzhen Key Laboratory of High Performance Nontraditional Manufacturing College of Mechatronics and Control EngineeringShenzhen UniversityShenzhenGuangdong 518060People’s Republic of China School of Materials Science and Engineering Dongguan University of TechnologyDongguanGuangdong 523808People’s Republic of China Institute of Materials China Academy of Engineering PhysicsJiangyouSichuan 621907People’s Republic of China State Key Laboratory of Powder Metallurgy Central South UniversityChangshaHunan 410083People’s Republic of China Institute of Advanced Wear&Corrosion Resistant and Functional Materials Jinan UniversityGuangzhouGuangdong 510632People’s Republic of China Institute of Materials Laboratory for MicrostructuresShanghai UniversityShanghai 200444People’s Republic of China Department of Materials Science and Engineering College of EngineeringCity University of Hong KongKowloon TongKowloonHong KongPeople’s Republic of China Department of Advanced Design and System Engineering College of EngineeringCity University of Hong KongKowloon TongKowloonHong KongPeople’s Republic of China

Metallic glasses(MGs)or amorphous alloys are an important engineering material that has a history of research of about 80–90 *** different fast cooling methods were developed for multi-component MGs between 1960s and 1980s,1990s witnessed a surge of research interest in the development of bulk metallic glasses(BGMs).Since then,one central theme of research in the metallic-glass community has been compositional design that aims to search for MGs with a better glass forming ability,a larger size and/or more interesting properties,which can hence meet the demands from more important *** this review article,we focus on the recent development of chemically complex MGs,such as high entropy MGs,with new tools that were not available or mature yet until recently,such as the state-of-the-art additive manufacturing technologies,high throughput materials design techniques and the methods for big data analyses(*** learning and artificial intelligence).We also discuss the recent use of MGs in a variety of novel and important applications,from personal healthcare,electric energy transfer to nuclear energy that plays a pivotal role in the battle against global warming.

关键词： metallic glasses amorphous alloys alloy design additive manufacturing machine learning high throughput materials design

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Retraction of lumbar disc herniation achieved by noninvasive techniques: A case report

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World Journal of Clinical Cases 2021年第27期9卷 8082-8089页

作者： Ping Wang Cai Chen Qing-Hao Zhang Guo-Dong Sun Cong-An Wang Wei Li State Key Laboratory of Precision Measurement Technology and Instruments Tianjin UniversityState Key Laboratory of Precision Measurement Technology and InstrumentsTianjin UniversityTianjin 300072China Shandong Academy of Chinese Medicine Jinan 250014Shandong ProvinceChina Medical Rehabilitation Research Center Shandong Institute of Advanced TechnologyChinese Academy of SciencesJinan 250000Shandong ProvinceChina Bone Biomechanics Engineering Laboratory of Shandong Province Neck-Shoulder and Lumbocrural Pain Hospital of Shandong First Medical UniversityJinan 250062Shandong ProvinceChina Academy of Medical Engineering and Translational Medicine Tianjin UniversityTianjin 300072China Department of Rehabilitation The Third Affiliated Hospital of Shandong First Medical University(Affiliated Hospital of Shandong Academy of Medical Sciences)Jinan 250031Shandong ProvinceChina Shandong First Medical University and Shandong Academy of Medical Sciences Neck-Shoulder and Lumbocrural Pain HospitalShandong Medicinal Biotechnology CenterJinan 250062Shandong ProvinceChina School of Control Science and Engineering Biomedical Engineering InstituteShandong UniversityJinan 250061Shandong ProvinceChina

BACKGROUND Lumbar disc herniation(LDH)has emerged as one of the most common causes of low back *** routine treatment approach involves chemonucleolysis therapy,discectomy by percutaneous endoscopy,and percutaneous laser disc ***,all of these methods carry inherent risk of causing harm to the patient and,as such,there is an unmet but urgent need for an effective and safe noninvasive treatment for *** purpose of this report is to describe a non-invasive method for re-absorption of *** SUMMARY A 34-year-old woman was admitted with a complaint of waist pain that she reported as having become acutely aggravated over the past 3 d and accompanied by discomfort in the right lower *** self-reported medical history included persistent postpartum low back pain from 7 years *** exam showed positivity for neck flexion test(Lindner sign)and supine abdomen test;the straight leg-raising test showed right 60(+)and left 80(-).Findings from standard imaging(magnetic resonance)and collective physical examinations indicated a L5/S1 herniated lumbar *** consisted of three-dimensional(balanced regulating)spinal manipulation and acupuncture,upon which the LDH resolved by *** Following L5/S1 herniated lumbar disc diagnosis,three-dimensional(balanced regulating)spinal manipulation combined with acupuncture therapy is an effective treatment.

关键词： Low back pain Lumbar disc herniation Retraction Three-dimensional spinal manipulation Balance regulating Manipulation Case report

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Emerging contaminants:A One Health perspective

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The Innovation 2024年第4期5卷 140-170,139页

作者： Fang Wang Leilei Xiang Kelvin Sze-Yin Leung Martin Elsner Ying Zhang Yuming Guo Bo Pan Hongwen Sun Taicheng An Guangguo Ying Bryan WBrooks Deyi Hou Damian EHelbling Jianqiang Sun Hao Qiu Timothy MVogel Wei Zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong Su Bryan MWong Tzung-May Fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwali Xiankui Zeng Haijun Wang Yuhao Fu Zhong Wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu Wang Ali El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-Fung Law Chenggang Gu Huizhong Shen Yanpeng Gao Chao Qin Hao Li Tong Zhang Natàlia Corcoll Min Liu Daniel SAlessi Hui Li Kristian KBrandt Yolanda Pico Cheng Gu Jianhua Guo Jianqiang Su Philippe Corvini Mao Ye Teresa Rocha-Santos Huan He Yi Yang Meiping Tong Weina Zhang Fidèle Suanon Ferdi Brahushi Zhenyu Wang Syed AHashsham Marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun Wu Willie Peijnenburg Edward Topp Xinde Cao Xin Jiang Minghui Zheng Taolin Zhang Yongming Luo Lizhong Zhu Xiangdong Li DamiàBarceló Jianmin Chen Baoshan Xing Wulf Amelung Zongwei Cai Ravi Naidu Qirong Shen Janusz Pawliszyn Yong-guan Zhu Andreas Schaeffer Matthias C.Rillig Fengchang Wu Gang Yu James M.Tiedje State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Department of Chemistry Hong Kong Baptist UniversityHong KongChina HKBU Institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical University of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany School of Resources&Environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of Environmental Science&Engineering Kunming University of Science&TechnologyKunming 650500China Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory of Environmental Theoretical Chemistry South China Normal UniversityGuangzhouGuangdong 510006China Department of Environmental Science Baylor UniversityWacoTXUSA Center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA School of Environment Tsinghua UniversityBeijing 100084China School of Civil and Environmental Engineering Cornell UniversityIthacaNY 14853USA Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance Department of Pla

Environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental Science-Policy Panel on Chemicals,Waste,and Pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One Health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for future generations.

关键词： pollution planet contaminants

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Computation simulation and experiment investigations of stable co-doping perovskite solar cells with TiO2/SnO2 bilayer and CuSCN structures

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Journal of Alloys and Compounds 2025年 1032卷

作者： Li, Guangdong Xu, Mingxiang Bai, Qingwang Zou, Xiaoping Bai, Xiao School of Physics Southeast University Nanjing211189 China Beijing Advanced Innovation Center for Materials Genome Engineering Research Center for Sensor Technology Beijing Key Laboratory for Sensor MOE Key Laboratory for Modern Measurement and Control Technology School of Applied Sciences Beijing Information Science and Technology University Jianxiangqiao Campus Beijing100101 China

The charge transport layers play a momentous role in facilitating the extraction and injection of carriers in perovskite solar cells (PSCs). Unfortunately, the performance of PSCs fabricated with conventional charge transport materials exhibits significant hysteresis and instability. Here we utilise the composite TiO₂/SnO₂ with superior electron mobility and stability and the low-cost CuSCN as bilayer electron transport layer (ETL) and hole transport layer (HTL) materials, respectively. The PSCs with the p-n-n (p-type FAxMA1-xPbIxBryCl3-x-y (FA=CH(NH2)2), MA=CH3NH3)-n-type SnO2-n-type TiO2) construction of FTO/TiO2/SnO2/FAxMA1-xPbIxBryCl3-x-y/CuSCN/C/FTO have been investigated via the computation simulation and experiment. It has been observed that the PSCs performance of p-n-n structure surpasses that of n-n-p (n-type SnO2-n-type TiO2-p-type FAxMA1-xPbIxBryCl3-x-y) structure, benefiting from the existence of the bilayer ETL with p-n-n structure, which improves the collection ability, and the lifetime and mobility of photogenerated carriers. The perovskite thin film can be uniformly covered by the CuSCN HTL with 25 μL CuSCN drop-coating solution, which effectively reducing the hysteresis of the device under the atmosphere conditions during the experiment. Furthermore, we further demonstrate that the thickness of functional layers, conduction band offset, doping concentration, and operating temperature play crucial roles in determining the photophysical and photoelectric properties of PSCs. The simulation results imply that the PSCs we designed and optimized not only have high power conversion efficiency (PCE) (17.7619 %) at 295 K but also maintain ascendant stability. This work shall provide up an effective strategy for the realization of high efficiency and long-term stable carbon-based PSCs. © 2025 Elsevier B.V.

关键词： Titanium dioxide

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Pressure Sensors Based on the Third-generation Semiconductor Silicon Carbide: A Comprehensive Review

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Engineering 2025年

作者： Xudong Fang Chen Wu Bian Tian Libo Zhao Xueyong Wei Zhuangde Jiang State Key Laboratory for Manufacturing Systems Engineering International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technologies Xi’an Jiaotong University Xi’an 710049 China School of Mechanical Engineering Xi’an Jiaotong University Xi’an 710049 China Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing Yantai 265503 China Overseas Expertise Introduction Center for Micro/Nano Manufacturing and Nano Measurement Technologies Discipline Innovation and Xi’an Jiaotong University (Yantai) Research Institute for Intelligent Sensing Technology and System Yantai 265503 China

Microelectromechanical system (MEMS) high-temperature pressure sensors are widely used in aerospace, petrochemical industries, automotive electronics, and other fields owing to their advantages of miniaturization, lightweight design, simplified signal processing, and high accuracy. In recent years, advances in semiconductor material growth technology and intelligent equipment operation have significantly increased interest in high-temperature pressure sensors based on the third-generation semiconductor silicon carbide (SiC). This review examines the material properties of SiC single crystals and discusses several technologies influencing the performance of SiC pressure sensors, including the piezoresistive effect, ohmic contact, etching processes, and packaging methodologies. Additionally, it explores future research directions in the field. The review highlights the importance of increasing operating temperatures and advancing sensor integration as critical trends for future SiC high-temperature pressure sensor research and applications.

关键词： Silicon carbide Pressure sensor Extreme environment Etching and packaging Ohmic contact

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Wide-spectrum optical synthetic aperture imaging via spatial intensity interferometry

arXiv

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arXiv 2022年

作者： Chu, Chunyan Liu, Zhentao Chen, Mingliang Shao, Xuehui Zhao, Yuejin Han, Shensheng Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology Beijing100081 China School of Optics and Photonics Beijing Institute of Technology Beijing100081 China Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences 201800 China University of Chinese Academy of Sciences Beijing100049 China National Laboratory of Aerospace Intelligent Control Technology Beijing100089 China Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Hangzhou310024 China

High resolution imaging is achieved using increasingly larger apertures and successively shorter wavelengths. Optical aperture synthesis is an important high-resolution imaging technology used in astronomy. Conventional long baseline amplitude interferometry is susceptible to uncontrollable phase fluctuations, and the technical difficulty increases rapidly as the wavelength decreases. The intensity interferometry inspired by HBT experiment is essentially insensitive to phase fluctuations, but suffers from a narrow spectral bandwidth which results in a lack of detection sensitivity. In this study, we propose optical synthetic aperture imaging based on spatial intensity interferometry. This not only realizes diffraction-limited optical aperture synthesis in a single shot, but also enables imaging with a wide spectral bandwidth. And this method is insensitive to the optical path difference between the sub-apertures. Simulations and experiments present optical aperture synthesis diffraction-limited imaging through spatial intensity interferometry in a 100 nm spectral width of visible light, whose maximum optical path difference between the sub-apertures reach 69.36λ. This technique is expected to provide a solution for optical aperture synthesis over kilometer-long baselines at optical wavelengths. Copyright © 2022, The Authors. All rights reserved.

关键词： Bandwidth

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Delay of inverse Hall-Petch relationship of nanocrystalline Cu by modifying grain boundaries with coherent twins

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Physical Review B 2022年第2期105卷 024107-024107页

作者： Hao Hu Tao Fu Chuanying Li Shayuan Weng Yinbo Zhao Xiang Chen Xianghe Peng Department of Engineering Mechanics Chongqing University Chongqing 400044 China State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing University Chongqing 400044 China Laser Micro/Nano-Fabrication Laboratory School of Mechanical Engineering Beijing Institute of Technology Beijing 100081 China Department of Aerospace Engineering Tohoku University 6-6-01 Aramaki Aza Aoba Aoba-ku Sendai Miyagi 980–8579 Japan Advanced Manufacturing Engineering Chongqing University of Posts and Telecommunications Chongqing 400065 China

In nanocrystalline metallic materials, with the decrease of grain size, the relationship between strength and grain size usually changes from the Hall-Petch (HP) to inverse Hall-Petch (IHP) relationship related to grain boundary (GB) characteristics. A series of nanocrystalline Cu samples with pre-specified grain orientations and different grain sizes were established, in which a part of GBs were replaced with coherent twin boundaries (CTBs). The mechanical behaviors of the samples with and without GB modification under tension were studied using molecular dynamics simulations. It was found that the HP and IHP relationships still work in the nanocrystalline Cu samples with GB modification, but the maximum strength is significantly improved, meanwhile the critical grain size for the transition from HP to IHP is reduced to 7.5 nm. The grain size effects on the flow stress were qualitatively analyzed based on the monitoring microstructure evolutions. The model dominated by GB was combined with that by intracrystalline CTB, which was further extended to quantitatively describe the grain size effect. It showed that the modification of GB could substantially delay the IHP effect, which provides a promising way for the design and optimization of the microstructure of high-performance nanocrystalline materials.

关键词： Disclinations & dislocations Grain boundaries Material failure Plasticity Twinning Polycrystalline materials Molecular dynamics

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Emergency Collision Avoidance Strategy for Autonomous Vehicles Based on Steering and Differential Braking

Research Square

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Research Square 2022年

作者： Li, Haiqing Li, Yongfu Zheng, Taixiong Ye, Qing School of Advanced Manufacturing Engineering Chongqing University of Posts and Telecommunications Chongqing China Key Laboratory of Intelligent Air-Ground Cooperative Control for Universities in Chongqing College of Automation Chongqing University of Posts and Telecommunications Chongqing China China Merchants Chongqing Communications Technology Research&Design Institute Co. Ltd. Chongqing China

This paper develops a novel integrated collision avoidance strategy for autonomous vehicles in emergency based on steering and braking. Specifically, the framework of the collision avoidance strategy is composed of two parts: an up-level decision-making layer and a low-level controller layer. The purpose of the up-level is to select the appropriate control strategy based on the vehicle information, and the low-level is to drive the vehicle according to the instructions generated by the up-level. More concretely, a novel control strategy is proposed by integrating with four-wheel steering, active rear steering and differential braking with guaranteed path-tracking accuracy and driving stability by adaptive model predictive control (AMPC). Finally, extensive co-simulations in MATLAB/Simulink and CarSim are conducted to verify the effectiveness of the proposed collision avoidance strategy in terms of tracking error, yaw rate and roll angle. © 2022, CC BY.

关键词： Collision avoidance

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