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Segment Anything Is Not Always Perfect: An Investigation of SAM on Different Real-world Applications

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Machine Intelligence Research 2024年第4期21卷 617-630页

作者： Wei Ji Jingjing li Qi Bi Tingwei liu wenbo li li Cheng University of Alberta Edmonton T6G 2R3Canada Wuhan University Wuhan 430072China Dalian University of Technology Dalian 116024China Samsung Research America Mountain View 94043USA

Recently,Meta AI Research approaches a general,promptable segment anything model(SAM)pre-trained on an unprecedentedly large segmentation dataset(SA-1B).Without a doubt,the emergence of SAM will yield significant benefits for a wide array of practical image segmentation *** this study,we conduct a series of intriguing investigations into the performance of SAM across various applications,particularly in the fields of natural images,agriculture,manufacturing,remote sensing and *** analyze and discuss the benefits and limitations of SAM,while also presenting an outlook on its future development in segmentation *** doing so,we aim to give a comprehensive understanding of SAM's practical *** work is expected to provide insights that facilitate future research activities toward generic *** code is publicly available at https://***/liuTingWed/SAM-Not-Perfect.

关键词： Segment anything model(SAM) visual perception segmentation foundational model computer vision.

Recent process developments in beneficiation and metallurgy of rare earths:A review

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Journal of Rare Earths 2024年第4期42卷 629-642页

作者： Shaokai Cheng wenbo li Yuexin Han Yongsheng Sun Peng Gao Xiaolong Zhang School of Resources and Civil Engineering Northeastern UniversityShenyang110819China National-local Joint Engineering Research Center of High-efficient Exploitation Technology for Refractory Iron Ore Resources Shenyang110819China

Rare earth elements(REEs)are irreplaceable materials supporting low-carbon technology and equip-ment,and their commercial demand and strategic position are becoming increasingly *** the continuous depletion of rare earth(RE)resources,developing high-efficiency beneficiation and eco-friendly metallurgical processes has attracted widespread *** paper reviews the major minerals exploited for RE production and their deposits,as well as the beneficiation and metallurgical processes of RE ***,monazite,mixed RE ores,and ion-adsorption clays are the main raw materials in the world to ***-bearing ores(except ion-adsorption minerals)are generally beneficiated by flotation,gravity and magnetic separation *** mainstream metallurgical processes for bastnaesite,monazite and mixed RE concentrates are oxidation roasting-HCl leaching,caustic soda decomposition and high-temperature concentrated sulfuric acid roasting,***-adsorption clays are directly processed by in situ leaching-precipitation/solvent *** achieve the sustainable development of RE resources,it is essential to further explore innovative techniques to achievecomprehensive utilization and cleaner production.

关键词： Rare earths Beneficiation processes Metallurgical processes Cleaner production

Review and Perspectives on Human Emotion for Connected Automated Vehicles

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Automotive Innovation 2024年第1期7卷 4-44页

作者： wenbo li Guofa li Ruichen Tan Cong Wang Zemin Sun Ying li Gang Guo Dongpu Cao Keqiang li School of Vehicle and Mobility Tsinghua University30 Shuangqing RdBeijing 100084China College of Mechanical and Vehicle Engineering Chongqing University174 Shazheng RdChongqing 400044China College of Computer Science and Technology Jilin University2699 Qianjin RdChangchun 130012China School of Mechanical Engineering Beijing Institute of Technology5 Zhongguancun South RdBeijing 100081China Lyles School of Civil Engineering Purdue University550 Stadium Mall DriveWest LafayetteIN 47907USA

The progression toward automated driving and the latest advancement in vehicular networking have led to novel and natural human-vehicle-road systems,in which affective human-vehicle interaction is a crucial factor affecting the acceptance,safety,comfort,and traffic efficiency of connected and automated vehicles(CAVs).This development has inspired increasing inter-est in how to develop affective interaction framework for intelligent cockpit in *** enable affective human-vehicle interactions in CAVs,knowledge from multiple research areas is needed,including automotive engineering,transportation engineering,human-machine interaction,computer science,communication,as well as industrial ***,there is currently no systematic survey considering the close relationship between human-vehicle-road and human emotion in the human-vehicle-road coupling process in the CAV *** facilitate progress in this area,this paper provides a comprehensive literature survey on emotion-related studies from multi-aspects for better design of affective interaction in intelligent cockpit for *** paper discusses the multimodal expression of human emotions,investigates the human emotion experiment in driving,and particularly emphasizes previous knowledge on human emotion detection,regulation,as well as their applications in *** promising research perspectives are outlined for researchers and engineers from different research areas to develop CAVs with better acceptance,safety,comfort,and enjoyment for users.

关键词： Intelligent vehicles Intelligent cockpit Human-machine interaction Emotion recognition Emotion regulation

A Self-Healing Optoacoustic Patch with High Damage Threshold and Conversion Efficiency for Biomedical Applications

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Nano-Micro Letters 2024年第7期16卷 31-45页

作者： Tao Zhang Cheng-Hui li wenbo li Zhen Wang Zhongya Gu Jiapu li Junru Yuan Jun Ou-Yang Xiaofei Yang Benpeng Zhu School of Integrated Circuit Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced MicrostructuresSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210093People’s Republic of China National Institute of Dental and Craniofacial Research(NIDCR) National Institutes of Health(NIH)35A Convent DriveBethesdaMD 20892USA Department of Neurology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030People’s Republic of China

Compared with traditional piezoelectric ultrasonic devices,optoacoustic devices have unique advantages such as a simple preparation process,anti-electromagnetic interference,and wireless long-distance power ***,current optoacoustic devices remain limited due to a low damage threshold and energy conversion efficiency,which seriously hinder their widespread *** this study,using a self-healing polydimethylsiloxane(PDMS,Fe-Hpdca-PDMS)and carbon nanotube composite,a flexible optoacoustic patch is developed,which possesses the self-healing capability at room temperature,and can even recover from damage induced by cutting or laser ***,this patch can generate high-intensity ultrasound(>25 MPa)without the focusing *** laser damage threshold is greater than 183.44 mJ cm^(-2),and the optoacoustic energy conversion efficiency reaches a major achievement at 10.66×10^(-3),compared with other carbon-based nanomaterials and PDMS *** patch is also been successfully examined in the application of acoustic flow,thrombolysis,and wireless energy *** findings in this study provides new insight into designing and fabricating of novel ultrasound devices for biomedical applications.

关键词： Optoacoustic Self-healing PDMS Acoustic flow Thrombolytic Wireless energy harvesting

Preface for Feature Topic on Human Driver Behaviours for Intelligent Vehicles

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Automotive Innovation 2024年第1期7卷 1-3页

作者： Dongpu Cao Argyrios Zolotas Meng Wang Mohammad Pirani wenbo li School of Vehicle and Mobility Tsinghua University30 Shuangqing Rd.Beijing 100084China School of Aerospace Cranfield UniversityCranfieldUK Friedrich list Faculty of Transport and Traffic Sciences Technische Universität DresdenDresdenGermany Department of Mechanical and Mechatronics Engineering University of WaterlooWaterlooCanada

1 Introduction With the advancement of sensing,machine learning,and computing systems,automated driving applications have been growing rapidly *** with the devel-opment of communication technologies such as dedicated short-range communication,extensively emerging intelli-gent vehicles have been developed to connect with vehicles,pedestrians,infrastructures,and clouds in the transportation ***,intelligent vehicles have become intelligent mobile terminal that carries rich functions and services.

关键词： Driver Together driving

Development of advanced anion exchange membrane from the view of the performance of water electrolysis cell

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Journal of Energy Chemistry 2024年第3期90卷 348-369,I0009页

作者： Chao liu Zhen Geng Xukang Wang Wendong liu Yuwei Wang Qihan Xia wenbo li liming Jin Cunman Zhang Clean Energy Automotive Engineering Center Tongji UniversityShanghai 201804China School of Automotive Studies Tongji UniversityShanghai 201804China

Green hydrogen produced by water electrolysis combined with renewable energy is a promising alternative to fossil fuels due to its high energy density with zero-carbon *** water electrolysis technologies,the anion exchange membrane(AEM) water electrolysis has gained intensive attention and is considered as the next-generation emerging technology due to its potential advantages,such as the use of low-cost non-noble metal catalysts,the relatively mature stack assembly process,***,the AEM water electrolyzer is still in the early development stage of the kW-level stack,which is mainly attributed to severe performance decay caused by the core component,i.e.,***,the review comprehensively presents the recent progress of advanced AEM from the view of the performance of water electrolysis ***,fundamental principles and critical components of AEM water electrolyzers are introduced,and work conditions of AEM water electrolyzers and AEM performance improvement strategies are *** challenges and perspectives are also analyzed.

关键词： Hydrogen Water electrolysis Anion exchange membrane Electrolysis cell

A Review of Terahertz Solid-state Electronic/Optoelectronic Devices and Communication Systems

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Chinese Journal of Electronics 2024年

作者： wenbo li Hongxin ZENG lin HUANG Sen GONG Haoyi CAO Weipeng WANG Zheng WANG Hongji ZHOU Shixiong liANG Ziqiang YANG Yaxin ZHANG University of Electronic Science and Technology of China Huzhou Key Laboratory of Terahertz Integrated Circuits and Systems Yangtze Delta Region Institute (Huzhou)University of Electronic Science and Technology of China Terahertz Institute Zhangjiang National Laboratory National Key Laboratory of Application Specific Integrated Circuit Hebei Semiconductor Research Institute

With the rapid development of modern communication technology, spectrum resources have become non-renewable and precious resources, and the terahertz frequency band has entered people's vision. Nowadays, terahertz communication technology has become one of the core technologies for future high-capacity and high-rate communication. This paper discusses and analyzes the core technologies related to the field of terahertz *** introduce the characteristics, domestic and international comparisons and development trends of the core devices for terahertz communication, and also introduce and discuss the terahertz solid-state frequency mixing communication system, terahertz direct modulation communication system, and terahertz optoelectronic communication ***, we summarize the development of terahertz communication technology and the outlook of future applications.

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固体火箭发动机三维装药的逆向设计与形状优化

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航空学报 2024年第11期45卷 196-214页

作者：李文韬何允钦李文博张艺仪梁国柱北京航空航天大学宇航学院北京102206 清华大学航天航空学院北京100084

固体火箭发动机装药逆向设计是指寻求最优的装药形状以匹配给定的内弹道性能曲线,可用于指导新型装药的设计。装药逆向设计正从尺寸优化阶段迈向形状优化与拓扑优化阶段。形状优化问题往往自由度大且高度非线性,这就对燃面退移的计算效... 详细信息

固体火箭发动机装药逆向设计是指寻求最优的装药形状以匹配给定的内弹道性能曲线,可用于指导新型装药的设计。装药逆向设计正从尺寸优化阶段迈向形状优化与拓扑优化阶段。形状优化问题往往自由度大且高度非线性,这就对燃面退移的计算效率提出了极高的要求,而现有的椭圆算法难以满足需要。为此有必要开发燃面退移的高效椭圆算法,并将其应用于三维装药的逆向设计。首先,将程函方程线性化,推导出亥姆霍兹方程和泊松方程,形成了一系列求解燃面退移的快速热传导(Fast Heat Conduction,FHC)方法。其中f-FHC方法采用空腔体积分数分布来描述不规则装药,使用LDL分解法求解线性方程组,实现了“一次分解,处处回代”,显著提高了计算效率。然后,系统地分析了三维装药逆向设计的关键问题,包括目标函数的选取、待优化自变量的取值范围、孤立孔洞识别、浇铸工艺性要求等。运用进化神经网络方法开发了装药逆向智能设计(Grain Reverse and Intelligent Design,GRID)系统。计算结果表明,fFHC方法可以将三维装药燃面退移的计算时间缩短至1 s以内。以双推力装药的燃面变化规律或内弹道性能曲线为目标,GRID系统成功设计出含有复杂三维内孔的新型装药。所得装药符合浇铸工艺条件,芯模可采用3D打印工艺制造。所提出的算法和开发的软件系统可以为新型装药的设计提供支撑。

关键词：固体火箭发动机装药逆向设计形状优化拓扑优化燃面退移程函方程进化神经网络

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行波激励下单层单跨结构地震响应解析解

沈阳建筑大学学报（自然科学版） 2024年第3期40卷 404-413页

作者：李文博刘铁林沈阳建筑大学土木工程学院辽宁沈阳110168

目的研究地震波中频率成分对小跨度结构响应行波效应的影响,以探究小跨度结构地震行波效应的产生机理。方法给出地震行波激励下单层单跨结构的动力平衡方程,使用相对运动法对方程进行求解;推导地震行波激励下屋面绝对位移和柱剪力的解析... 详细信息

目的研究地震波中频率成分对小跨度结构响应行波效应的影响,以探究小跨度结构地震行波效应的产生机理。方法给出地震行波激励下单层单跨结构的动力平衡方程,使用相对运动法对方程进行求解;推导地震行波激励下屋面绝对位移和柱剪力的解析解,分别研究低频成分丰富和低频成分不丰富地震波激励下的峰值柱剪力。结果地震行波激励下柱剪力解析解不仅与时间延迟有关,还与结构基频和激励频率比值的平方有关;对于低频成分丰富的地震波,行波激励下峰值柱剪力大于一致激励下峰值柱剪力;相反,对于低频成分不丰富的地震波,行波激励下峰值柱剪力要小于一致激励下峰值柱剪力。结论结构响应地震行波效应除取决于时间延迟外,还取决于地震波中的低频成分;在低频成分丰富的地震波激励下,小跨度结构会产生行波效应,且低频成分越丰富的地震波,行波效应越显著;在低频成分不丰富的地震波激励下,不会产生行波效应。

关键词：小跨度结构地震激励解析解行波效应低频成分