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Initial measurement of ultrafast charge exchange recombination spectroscopy on the EAST tokamak

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Plasma Science and Technology 2024年第5期26卷 40-46页

作者：蒋军李颖颖陈冉符佳吕波余羿徐国盛叶民友 School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026People’s Republic of China Enn Science and Technology Development Co.Ltd. Langfang 065001People’s Republic of China Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People’s Republic of China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082People’s Republic of China

Ultrafast charge exchange recombination spectroscopy(UF-CXRS)has been developed on the EAST tokamak(Yingying Li et al 2019 Fusion ***.146522)to measure fast evolutions of ion temperature and toroidal ***,we report the preliminary diagnostic measurements after relative sensitivity *** measurement results show a much higher temporal resolution compared with conventional CXRS,benefiting from the usage of a prismcoupled,high-dispersion volume-phase holographic transmission grating and a high quantum efficiency,high-gain detector *** the UF-CXRS diagnostic,the fast evolutions of the ion temperature and rotation velocity during a set of high-frequency small-amplitude edgelocalized modes(ELMs)are obtained on the EAST tokamak,which are then compared with the case of large-amplitude ELMs.

关键词： ultrafast charge exchange recombination spectroscopy EAST diagnostic measurements

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新时代中国海洋外交:政策内涵与实践路径

国际问题研究 2024年第1期 37-52,131页

作者：余敏友倪瑶武汉大学中国边界与海洋研究院

海洋是维护国家主权、安全、发展利益的战略要地。新时代中国海洋外交以构建海洋命运共同体为总目标,以维护国家主权、安全和发展利益为根本任务,以和平、发展、合作、共赢为基本原则,以党的集中统一领导为坚强保证。新时代中国海洋外... 详细信息

海洋是维护国家主权、安全、发展利益的战略要地。新时代中国海洋外交以构建海洋命运共同体为总目标,以维护国家主权、安全和发展利益为根本任务,以和平、发展、合作、共赢为基本原则,以党的集中统一领导为坚强保证。新时代中国海洋外交因应世界百年未有之大变局对海洋治理的挑战,服务海洋强国建设和中华民族伟大复兴的历史使命,是中国特色大国外交在海洋领域的创新发展,相关思想、理念和政策是中国海洋领域对外工作的根本遵循和行动指南,为和平解决争端、管控危机风险、深化对话合作、引领全球治理指明了前进方向。

关键词：海洋外交海洋命运共同体海洋权益全球海洋治理

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运动想象脑机接口的判别迁移特征学习与分类

重庆大学学报 2024年第3期47卷 86-95页

作者：齐垒陈民铀张莉重庆大学电气工程学院重庆400030

为了解决不同时间采集的运动想象脑电数据之间存在的分布差异,避免跨时段使用前长时间的重校准步骤,提出了一种基于判别迁移特征学习(discriminative transfer feature learning,DTFL)的运动想象分类方法。DTFL通过联合匹配源域和目标... 详细信息

为了解决不同时间采集的运动想象脑电数据之间存在的分布差异,避免跨时段使用前长时间的重校准步骤,提出了一种基于判别迁移特征学习(discriminative transfer feature learning,DTFL)的运动想象分类方法。DTFL通过联合匹配源域和目标域之间的边缘分布和类条件分布来减少域间的差异,同时最大化类间距离和最小化类内距离来保留类判别信息,从而提升对运动想象的分类性能。基于DTFL的运动想象分类方法无需目标域脑电样本的类别信息,可以有效避免长时间的校准。在脑机接口竞赛数据集上的实验结果表明,DTFL显著优于其他迁移学习方法,有效缓解跨域分布的不一致性,提高了运动想象的分类正确率。

关键词：脑机接口运动想象迁移学习

《中华人民共和国渔业法修订草案(征求意见稿)》对渔获物可追溯制度的构建

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海洋开发与管理 2024年第4期41卷 140-151页

作者：余敏友唐灵唯武汉大学中国边界与海洋研究院武汉430072

近来日本核污染水排放计划及其实施使渔获物可追溯制度举世瞩目,虽然普遍性的国际条约短期内难以达成,但各具特色的国别渔获物可追溯制度竞相出现。《中华人民共和国渔业法修订草案(征求意见稿)》虽然提出“渔获物可追溯制度”,但未明... 详细信息

近来日本核污染水排放计划及其实施使渔获物可追溯制度举世瞩目,虽然普遍性的国际条约短期内难以达成,但各具特色的国别渔获物可追溯制度竞相出现。《中华人民共和国渔业法修订草案(征求意见稿)》虽然提出“渔获物可追溯制度”,但未明确其定义、范围、违法责任和执行机制。作为渔获物进出口大国,渔获物可追溯制度对于我国打击IUU捕捞、保障渔业对外贸易和食品安全具有重要意义。文章基于我国类似制度安排和实践经验,参考国际上有关制度的相关规定,提出并论证渔获物可追溯制度的实质要素及最优立法模式,以此推进规则的全国统一和国际化进程。

关键词：可追溯性 IUU捕捞透明度渔获物食品安全

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Alfvén eigenmode stability analysis and energetic particle transport prediction for CFETR hybrid scenario

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Plasma Science and Technology 2019年第9期21卷 46-51页

作者： Yunpeng ZOU minyou YE School of Physical Science University of Science and Technology of China

The hybrid scenario is a projection for CFETR operation with high plasma current and ***, the energetic particles(EPs) generated by fusion reactions can destabilize Alfvén eigenmodes(AEs), which could result in significant EPs loss and redistribution. Both the eigenvalue code NOVA-K and the wrapped local stability code TGLFEP are used to analyze AE stability. The simulation indicates the beta-induced Alfvén eigenmodes with n?>?5 in the core region are the most unstable. The NOVA-K code is used to benchmark the critical density gradient calculated by TGLFEP. In addition, the EPtran code is employed to predict EP transport induced by unstable AEs and turbulence, which reduce EP density in the core and drive approximately 30% EP transport from the core to the edge, thus the EP density profile flattens and EPs with lower energy deposit near the edge.

关键词： CFETR energetic particle Alfvén eigenmodes critical gradient model

A mesh based routing protocol in vehicular ad hoc networks

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High Technology Letters 2009年第4期15卷 363-368页

作者：黄宏宇 Li Minglu Wu minyou Department of Computer Science and Engineering Shanghai Jiaotong University Shanghai 200240 P.R. China

This paper studies a routing protocol used in the application of collecting real-time traffic information using mobile vehicles to monitor traffic status. The biggest challenge of vehicular ad hoe network routing protocol lies in the mismatch between the direction of moving vehicles and routed data. In order to deal with this mismatch, a mesh based routing protocol with a two-tier network architecture is proposed. By using mesh nodes deployed at intersections, data can be routed through an optimized path which can improve the delivery ratio and reduce the consumption of network resources. The simulation uses the mobility model processed from the GPS data of taxis mnning in Shanghai urban areas. The result shows that the proposed protocol outperforms the existing flooding protocol.

关键词： vehicular ad hoe networks (vANETs) deployment routing protocol

FFT-DMAC: a tone based DMAC protocol

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High Technology Letters 2009年第3期15卷 301-308页

作者：李蓥 Li Mingtu Shu Wei Wu minyou School of Computer Science ＆ Technology Soochow University Suzhou 215006 P.R. China Department of Computer Science and Engineering Shanghai Jiaotong University Shanghai 200030 P.R. China Department of Electrical and Computer Engineering The University of New Mexico Albuquerque 87131 USA

This paper presents the flip-flop tone （FFT） DMAC protocol, a tone based MAC protocol using di- rectional antennas to solve the deafness problem, hidden terminal and exposed terminal problems simulta- neously. It uses two pairs of flip-flop tones. The first pair of tone is to send omni-directionally to reach every neighboring node to announce the start and the end of communication, and therefore to alleviate the deafness problem. The second pair of tone is to send directionally towards the sender. It is used to solve the hidden temlinal problem as well as the exposed terminal problem. Evaluation shows that FFT-DMAC can achieve better performance compared to the 802.11 and ToneDMAC protocol.

关键词： MAC directional antenna busy tone

CHINA＇S TEN YEARS IN THE WTO： ITS PERFORMANCE AND NEW CHALLENGES

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Frontiers of Law in China-Selected Publications from Chinese Universities 2012年第3期7卷 329-376页

作者： minyou Yu Heng Liu School of Law Wuhan UniversityWuhanChina Institute of European Studies Chinese Academy of Social SciencesBeijingChina

Becoming a,member of the WTO in 2001 was a historic event of great significance during the process of China＇s reform and opening up. Since then, China has steadily pushed forward the reform and opening up poIicy, proactively seizing the opportunities of economic globalization and positively utilizing the multilateral trading system to develop economic and trade relations with other countries, all of which have contributed to the great economic and social achievements during the first decade of 21st century. However, there are different opinions on China ＂s futuristic role in the WTO, and those disagreements resulting from various interest preferences are not only one-sided and limited, but also triggering off the discussions on the criteria to assess China＇s performance in the WTO.

关键词： economic globalization performance in

Linear hybrid simulations of low-frequency fishbone instability driven by energetic passing particles in tokamak plasmas

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Plasma Science and Technology 2022年第6期24卷 96-104页

作者： Jixing YANG Guoyong FU Wei SHEN minyou YE School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026People's Republic of China Institute for Fusion Theory and Simulation and Department of Physics Zhejiang UniversityHangzhou 310027People's Republic of China Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People's Republic of China

A linear simulation study of energetic passing particle-driven low-frequency fishbone instability in tokamak plasmas has been carried out using the global kinetic-MHD(magnetohydrodynamics)hybrid code *** work is focused on the interaction of energetic passing beam ions and n=1 mode with a monotonic safety factor q profile and q_(0)<***,the stability and mode frequency as well as mode structure of the n=1mode are calculated for scans of parameter values of beam ion beta,beam ion injection energy,beam ion orbit width,beam ion beta profile,as well as background plasma *** excited modes are identified as a low-frequency fishbone with the corresponding resonance of w_(φ)+w_(θ)=w,where w_(φ)is the beam ion toroidal transit frequency and w_(θ)is the beam ion poloidal transit *** simulated mode frequency is approximately proportional to the beam ion injection energy and beam ion orbit *** mode structure is similar to that of internal kink *** simulation results are similar to the analytic theory of Yu et al.

关键词： fishbone energetic particle hybrid simulations tokamak