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A Method for Classification and Evaluation of Pilot’s Mental States Based on CNN

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Computer Systems Science & Engineering 2023年第8期46卷 1999-2020页

作者： Qianlei Wang Zaijun Wang Renhe Xiong Xingbin Liao xiaojun tan Chengdu Institute of Computer Application Chinese Academy of SciencesChengdu610041SichuanChina School of Computer Science and Technology University of Chinese Academy of SciencesBeijing 100080China Key Laboratory of Flight Techniques and Flight Safety Civil Aviation Flight University of ChinaGuanghan618307SichuanChina School of Air Traffic Management Civil Aviation Flight University of ChinaGuanghan618307SichuanChina Neurology Department Deyang Second People’s HospitalGuanghan618307SichuanChina

How to accurately recognize the mental state of pilots is a focus in civil aviation *** mental state of pilots is closely related to their cognitive ability in *** the cognitive ability meets the standard is related to flight ***,the pilot’s working state is unique,which increases the difficulty of analyzing the pilot’s mental *** this work,we proposed a Convolutional Neural Network(CNN)that merges attention to classify the mental state of pilots through electroencephalography(EEG).Considering the individual differences in EEG,semi-supervised learning based on improvedK-Means is used in themodel training to improve the generalization ability of the *** collected the EEG data of 12 pilot trainees during the simulated flight and compared the method in this paper with other methods on this *** method in this paper achieved an accuracy of 86.29%,which is better than 4D-aNN and HCNN *** emotion will increase the probability of fatigue appearing,and emotion recognition is also meaningful during the *** we conducted experiments on the public dataset SEED,and our method achieved an accuracy of 93.68%.In addition,we combine multiple parameters to evaluate the results of the classification network on a more detailed level and propose a corresponding scoring mechanism to display the mental state of the pilots directly.

关键词： Pilot mental state EEG attention CNN semi-supervised learning

Rubik’s cube as in-situ programmable matter and a reconfigurable mechanical metamaterial

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Science China(Technological Sciences) 2024年第10期67卷 3221-3234页

作者： ZHU ShaoWei CHEN Huan YANG XiaoQiang tan Li JIN Shuai CHEN LiMing LIU Tao tan xiaojun WANG LianChao WANG Bing MUAMER Kadic State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400030China College of Aerospace Engineering Chongqing UniversityChongqing 400030China School of Civil Aviation Northwestern Polytechnical UniversityXi’an 710129China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of TechnologyHarbin 150080China Institut FEMTO-ST CNRS UMR 6174University BourgogneFranche-ComtBesan¸con 25000France

As part of the 4th industrial revolution,programmable mechanical metamaterials exhibit great application potential in flexible robotics,vibration control,and impact ***,maintaining a programmed state without sustaining the external stimulus is often challenging and leads to additional energy *** by Rubik’s cube,we design and study an in-situ programmable and distribution-reconfigurable mechanical metamaterial(IPDR-MM).A matrix model is developed to model IPDR-MMs and describe their morphological *** on this model,the reinforcement learning method is employed to find the pathways for morphological *** find that IPDR-MMs have controllable stiffness across several orders of magnitude and a wide range of adjustable anisotropies through morphology ***,because of the independence of the directions of morphology transformation and bearing,IPDR-MMs exhibit good stability in bearing and can readily achieve high *** Rubik’s cube-inspired design concept is also instructive for other deformable structures and metamaterials,and the current version of the proposal should be sufficiently illustrative to attract and broaden interdisciplinary interests.

关键词： mechanical metamaterials in-situ programmable distribution-reconfigurable Rubik’s cube controllable stiffness and anisotropy

THREE DIMENSIONAL DATA STRUCTURE AND DATA MODEL

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Geo-Spatial Information Science 2000年第3期3卷 19-23页

作者： Bian Fuling Zhu Guobin Li Jun tan xiaojun School of Inforrmtion Enginaering WTUSM

3D GISs were developed simultaneously in the late 1980s in a number of different *** development of these 3D GISs can not yet meet all needs for new representations and analytical tool s in 3D envir *** this paper,the data structures,especially solid-based data representa tions are ***,a typical object-oriented data model is put forth to s how a new data *** at last,two data access methods are proposed to make th e data model clear.

关键词： 3D data structure data model

Laser polishing of a high-entropy alloy manufactured by selective laser melting

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Frontiers of Mechanical Engineering 2024年第5期19卷 73-86页

作者： xiaojun tan Haibing XIAO Zihong WANG Wei ZHANG Zhijuan SUN Xuyun PENG Zhongmin LIU Liang GUO Qingmao ZHANG Intelligent Manufacturing and Equipment School Shenzhen Institute of Information TechnologyShenzhen 518172China Sino-German Intelligent Manufacturing School Shenzhen City PolytechnicShenzhen 518116China Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices School of Information and Optoelectronic Science and EngineeringSouth China Normal UniversityGuangzhou 510006China Guangdong Provincial Key Laboratory of Industrial Ultrashort Pulse Laser Technology Shenzhen 518055China College of Materials Science and Engineering Chongqing UniversityChongqing 400045China

The selective laser melting(SLM)technique applied to high-entropy alloys(HEAs)has attracted considerable attention in recent ***,its practical application has been restricted by poor surface *** this study,the capability of laser polishing on the rough surface of a Co-free HEA fabricated using SLM was *** show that the initial SLM-manufactured(as-SLMed)surface of the Co-free HEA,with a roughness exceeding 3.0μm,could be refined to less than 0.5μm by laser ***,the microstructure,microhardness,and wear resistance of the laser-polished(LP-ed)zone were *** indicate that compared with the microhardness and wear resistance of the as-SLMed layer,those of the LP-ed layer decreased by 4%and 11%,respectively,because of the increase in grain size and reduction of the BCC *** study shows that laser polishing has an excellent application prospect in surface improvement of HEAs manufactured by SLM.

关键词： laser polishing selective laser melting high-entropy alloy surface roughness mechanical performance

Au nanospheres modified boron-doped diamond microelectrode grown via hydrogen plasma etching solid doping source for dopamine detection

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Journal of Materials Science & Technology 2020年第14期47卷 42-46页

作者： Kaili Yao xiaojun tan Bing Dai Jie Bai Qiaoyang Sun Wenxin Cao Jiwen Zhao Lei Yang Jiecai Han Jiaqi Zhu National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of TechnologyHarbin150080China

Boron doped diamond(BDD)electrode is a promising electrochemical material for detecting dopamine level in the human’s *** this work,we developed a new doping source-graphite and solid boron oxide powders to synthesize BDD film with microwave plasma chemical vapor deposition,so as to avoid using toxic or corrosive dopants,such as boroethane and *** synthesized BDD film is pinhole free and with high doping density of 8.44×10^20 cm^-3 calculated from the Raman ***,Au nanospheres were decorated on the surface of BDD film to improve electrochemical performance of the BDD *** Au nanoparticles modified BDD electrode demonstrates an excellent electrochemical response,a high sensitivity(in the range of 5μM-1 m M),and a low detection limit(~0.8μM)for detecting dopamine.

关键词： Boron doped diamond Graphite powders Boron oxide powders Optical emission spectroscopy Dopamine

Application of Functional Polymers in Laundry Care

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China Detergent & Cosmetics 2020年第2期5卷 50-56页

作者： Zhang Tianyi tan xiaojun Wang Jing Whealth Lohmann Centralin(GZ)Co.Ltd. China

This paper was to describe the current situation and development prospect of the global laundry care market,and made a conjecture on the future development trend of polymers,and to list four kinds of polymers widely a... 详细信息

关键词： laundry care polymer green product environmental friendly deodorant fluorescent brightener antiredeposition agent microcapsule

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一种基于广度优先策略的R树连接算法

华中科技大学学报（自然科学版） 2005年第4期33卷 79-82页

作者：谈晓军冯欣华中科技大学水电与数字化工程学院湖北武汉430074 武汉精伦电子股份有限公司湖北武汉430074

研究了一种基于广度优先搜索的层内分组扫描策略的R树空间连接新算法.BFGS采用广度优先的顺序对两棵R树进行同步遍历,在处理每层的中间连接索引时采取了比逐个节点连接更好的层内优化策略,使得所生成的中间连接索引自动被排序,从而减少... 详细信息

研究了一种基于广度优先搜索的层内分组扫描策略的R树空间连接新算法.BFGS采用广度优先的顺序对两棵R树进行同步遍历,在处理每层的中间连接索引时采取了比逐个节点连接更好的层内优化策略,使得所生成的中间连接索引自动被排序,从而减少了对其的处理时间.实验结果表明,无论是I/O时间还是CPU时间,BFGS都胜过RJ和BFRJ算法,比RJ算法的速度快了15 .5 %～33.1% ,证明BFGS是一种高效的R树空间连接算法.

关键词：空间数据库 R树空间连接广度优先平面扫描

21世纪日本马克思主义的理论新发现与实践新探索——以日本新版《资本论》的修订为例

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马克思主义研究 2022年第9期 126-138页

作者：谭晓军中国社会科学院大学马克思主义学院中国社会科学院马克思主义研究院北京100732

新冠肺炎疫情在全球暴发后,日本出现批判资本主义、关注马克思主义和社会主义的热潮。2021年7月,全面修订后的日本新版《资本论》(12册)全部出版发行,成为这一热潮中的一个亮点。日本新版《资本论》是20世纪90年代苏联解体、东欧剧变后... 详细信息

新冠肺炎疫情在全球暴发后,日本出现批判资本主义、关注马克思主义和社会主义的热潮。2021年7月,全面修订后的日本新版《资本论》(12册)全部出版发行,成为这一热潮中的一个亮点。日本新版《资本论》是20世纪90年代苏联解体、东欧剧变后,日本马克思主义学者参与新历史考证版《马克思恩格斯全集》中《资本论》手稿的编辑工作,并对全部手稿进行深入研究的基础上完成的重要成果。它不仅有对“恩格斯编辑问题”等文本研究的新发现和修订,而且成为21世纪日本共产党在发达资本主义国家推进向社会主义和共产主义社会发展的社会变革的主要理论依据,对我们了解21世纪日本马克思主义的文本研究状况、理解日本共产党的社会实践变化,以及运用马克思的未来社会理论推动世界社会主义运动等问题,具有重要的启示意义。

关键词：日本新版《资本论》马克思主义日本共产党社会主义未来社会

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百年历程:日本共产党的发展困境及启示

马克思主义与现实 2021年第4期73卷 135-142页

作者：谭晓军中国社会科学院大学中国社会科学院马克思主义研究院

日本共产党成立于1922年,是日本现有政党中历史最为悠久的一个,也是当前发达资本主义国家中党员人数最多、组织化程度最高和影响较大的共产党。在日本共产党即将迎来建党100周年之际,回顾其百年历程,特别是了解其在政治环境、理论创新... 详细信息

日本共产党成立于1922年,是日本现有政党中历史最为悠久的一个,也是当前发达资本主义国家中党员人数最多、组织化程度最高和影响较大的共产党。在日本共产党即将迎来建党100周年之际,回顾其百年历程,特别是了解其在政治环境、理论创新、群众基础、国际共运等方面遭遇的困难与原因,不仅可以理解日共身处发达资本主义国家、希望通过走议会道路实现执政的目标难以实现的原因,及其作为日本政坛不可或缺的左翼力量的重要性;而且对于我们做好在全球范围内两种意识形态与两种制度长期共存的思想和行动准备,更好巩固人民群众这一执政基础,加强与各国共产党的交流,进一步凝聚共识,积极推动世界社会主义运动向前发展等诸多方面,具有重要启示意义。同时,面对日共近年来对我们党、我们国家态度的转变,可以把握其深层次的原因,从而做到既积极应对,又谨慎处理,以防止出现两党关系再度破裂的困难局面。

关键词：日本共产党马克思主义议会道路中国共产党