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Science Foundation in China 2007年第2期15卷 1-3页

作者： chen yiyu International Symposium celebrating the 30th anniversary of KOSEF

Mr.Chairman Ladies and Gentlemen, Good morning. It is my great pleasure to participate in this event,which celebrates the 30th anniversary of KOSEF and is of great significance to the internation- al community of fund... 详细信息

关键词：中国国家自然科学基金委员会基金制度韩国科学与工程基金会科学研究

Genomic features for adaptation and evolutionary dynamics of four major Asian domestic carps

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Science China(Life Sciences) 2024年第6期67卷 1308-1310页

作者： cheng Wang Liandong Yang Yongrui Lu chengchi Fang Xiaoni Gan yiyu chen Shunping He State Key Laboratory of Freshwater Ecology and Biotechnology Institute of HydrobiologyChinese Academy of SciencesWuhan 430072China University of Chinese Academy of Sciences Beijing 100049China Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunming 650223China Academy of Plateau Science and Sustainability Qinghai Normal UniversityXining 810016China National Natural Science Foundation of China Beijing 100085China

Dear Editor,The coexistence of various species in a shared natural environment often results in the differentiation of their ecological niches,as they adapt to specific ecological roles(Jani?ováet al.,2018),this process leads to the development of distinct phenotypic traits and dietary preferences(Li et al.,2021).Studying this adaptive evolution,the four major Asian domestic carps,namely Ctenopharyngodon idella(grass carp),Mylopharyngodon piceus(black carp).

关键词： Asian evolutionary ecological

Numerical and Experimental Investigation on the Performance of Battery Thermal Management System Based on Micro Heat Pipe Array

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Journal of Thermal Science 2022年第5期31卷 1531-1541页

作者： YANG Lulu XU Hongbo ZHANG Hainan chen yiyu LIU Ming TIAN Changqing Key Laboratory of Space Energy Conversion Technology Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China

Battery thermal management is very crucial for the safe and long-term operation of electric vehicles or hybrid electric vehicles.In this study,numerical simulation method is adopted to simulate the temperature field of Li-ion battery cell and module.It is proved that the maximum temperature and maximum temperature difference of battery cell and module increase with the increase of charge/discharge rate(C-rate)of the battery.For battery module,it can reach a maximum temperature of 61.1℃at a C-rate of 2 under natural convection condition with the ambient temperature of 20.0℃.A battery thermal management system based on micro heat pipe array(BTMS-MHPA)is deeply investigated.Experiments are conducted to compare the cooling effect on the battery module with different cooling methods,which include natural cooling,only MHPA,MHPA with fan.The maximum temperature of battery module which is cooled by MHPA with a fan is 43.4℃at a C-rate of 2,which is lower than that in the condition of natural cooling.Meanwhile,the maximum temperature difference was also greatly reduced by the application of MHPA cooling.The experimental results confirm that the feasibility and superiority of the BTMS-MHPA for guaranteeing the working temperature range and temperature uniformity of the battery.

关键词： battery thermal management micro heat pipe array Li-ion battery temperature field

High-performance liquid metal electromagnetic actuator fabricated by femtosecond laser

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International Journal of Extreme Manufacturing 2024年第2期6卷 511-521页

作者： yiyu chen Hao Wu Rui Li Shaojun Jiang Shuneng Zhou Zehang Cui Yuan Tao Xinyuan Zheng Qianqian Zhang Jiawen Li Guoqiang Li Dong Wu Jiaru Chu Yanlei Hu CAS Key Laboratory of Mechanical Behavior and Design of Materials Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education InstitutesDepartment of Precision Machinery and Precision InstrumentationUniversity of Science and Technology of ChinaHefei 230027People’s Republic of China Key Laboratory of Testing Technology for Manufacturing Process of Ministry of Education Southwest University of Science and TechnologyMianyang 621010People’s Republic of China Department of Mechanical Engineering The University of Hong KongHong Kong Special Administrative Region of ChinaPeople’s Republic of China

Small-scale electromagnetic soft actuators are characterized by a fast response and simplecontrol,holding prospects in the field of soft and miniaturized robotics.The use of liquid metal(LM)to replace a rigid conductor inside soft actuators can reduce the rigidity and enhance the actuation performance and robustness.Despite research efforts,challenges persist in the flexible fabrication of LM soft actuators and in the improvement of actuation performance.To address these challenges,we developed a fast and robust electromagnetic soft microplate actuator based on a laser-induced selective adhesion transfer method.Equipped with unprecedentedly thin LM circuit and customized low Young’s modulus silicone rubber(1.03 kPa),our actuator exhibits an excellent deformation angle(265.25?)and actuation bending angular velocity(284.66 rad·s^(-1)).Furthermore,multiple actuators have been combined to build an artificial gripper with a wide range of functionalities.Our actuator presents new possibilities for designing small-scaleartificial machines and supports advancements in ultrafast soft and miniaturized robotics.

关键词： soft actuators femtosecond laser liquid metal

A Practical Reinforcement Learning Framework for Automatic Radar Detection

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中兴通讯技术:英文版 2023年第3期21卷 22-28页

作者： YU Junpeng chen yiyu Nanjing Research Institute of Electronics Technology Nanjing 210039China Nanjing University Nanjing 210023China

At present,the parameters of radar detection rely heavily on manual adjustment and empirical knowledge,resulting in low automation.Traditional manual adjustment methods cannot meet the requirements of modern radars for high efficiency,high precision,and high automation.Therefore,it is necessary to explore a new intelligent radar control learning framework and technology to improve the capability and automation of radar detection.Reinforcement learning is popular in decision task learning,but the shortage of samples in radar control tasks makes it difficult to meet the requirements of reinforcement learning.To address the above issues,we propose a practical radar operation reinforcement learning framework,and integrate offline reinforcement learning and meta-reinforcement learning methods to alleviate the sample requirements of reinforcement learning.Experimental results show that our method can automatically perform as humans in radar detection with real-world settings,thereby promoting the practical application of reinforcement learning in radar operation.

关键词： meta-reinforcement learning radar detection reinforcement learning offline reinforcement learning

Sequences of cytochrome b gene for primitive cyprinid fishes in East Asia and their phylogenetic concerning

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Chinese Science Bulletin 2001年第8期46卷 661-665页

作者： HE Shunping chen yiyu Nakajiama Tsuneo Institute of Hydrobiology Chinese Academy of SciencesWuhan 430072China Lake Biwa Museum 10910 OroshimoKusatsuShiga 525Japan

1140 bp of cytochrome b gene were amplified and sequenced from 14 species of primitive cyprinid fishes in East Asia. Aligned with other ten cytochrome b gene sequences of cyprinid fish from Europe and North America retrieved from Gene bank, we obtained a matrix of 24 DNA sequences. A cladogram was generated by the method of Maximum likelihood for the primitive cyprinid fishes. The result indicated that subfamily Leuciscinae and Danioninae do not form a monophyletic group. In the subfamily Danioninae, Opsariichthys biden and Zacco platypus are very primitive and form a natural group and located at the root. But the genera in subfamily Danioninae are included in different groups and have not direct relationship. Among them, Aphyocypris chinensis and Yaoshanicus arcus form a monophyletic group. Tanichthys albonubes and Gobiocypris rarus have a close relation to Gobioninae. The genus Danio is far from other genera in Danioninae. In our cladogram, the genera in Leuciscinae were divided into two groups that

关键词： cyprinidae molecular systematics cytochrome b gene phylogeny.

Mechanism and control of lake eutrophication

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Chinese Science Bulletin 2006年第19期51卷 2401-2412页

作者： QIN Boqiang YANG Liuyan chen Feizhou ZHU Guangwei ZHANG Lu chen yiyu Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing 210008 China College of Environmental Sciences Nanjing University Nanjing 210093 China National Natural Science Foundation of China Beijing 100085 China

A review about lake naturally eutrophi- cating, the internal loading of nutrients from lake sediment as well as the mechanism of algal blooms and the control practices was made, especially the eutrophication problem of shallow lakes since sev- enty percent of fresh water lakes in China are shallow lakes. It was found that shallow lakes are apt toward eutrophication than deep lakes. Without any influ- ences of human activity, shallow lakes in the middle and lower reaches of Yangtze River are still easily eutrophicated, which may be owing to the effects of flood in this area. In shallow lakes, sediments are frequently disturbed by wind-wave and resuspended, which result in huge nutrients release to overlying water. This may be the major reason for higher in- ternal loading of nutrients in shallow lakes than in deep lakes. Algal bloom is an extreme response of lake ecosystem to the eutrophication. Appearance of algal blooms is related to physical condition of lakes, such as underwater radiation (or transparency), temperature, and hydrodynamic conditions, or related to geochemical conditions of lakes, like concentra- tions of nutrients and ratio of nitrogen to phosphorus, as well as the physiological advantage of cyanobac- teria such as vacuole for moving towards the radiant energy-rich zone and the mycosporine-like amino acids (MAAs) for resisting the harm of ultraviolet ra- diation. In shallow lakes, these advantages of cyanobacteria are favorable in the competition than in deep lakes. Also being the shallowness, it is more difficult to reduce nutrient loading and to control algae blooms in shallow lakes. For the control of eutrophi- cation, people should follow the sequence from pollution sources control, ecological restoration tocatchment management. To control the internal nu- trient release, physical, chemical, biological tech- niques, and even bionic techniques could be selected. The idea of ecological restoration for a eutrophic lake is to shift the ecosystem from phytoplankton-domi- nant state to macrophyte-

关键词：湖泊超营养作用负载控制生态恢复

Bayesian mixed models and divergence time estimation of Chinese cavefishes (Cyprinidae: Sinocyclocheilus)

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Chinese Science Bulletin 2008年第15期53卷 2342-2352页

作者： LI ZhiQiang GUO Baocheng LI JunBing HE ShunPing chen yiyu Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China Graduate University of the Chinese Academy of Sciences Beijing 100049 China

The genus Sinocyclocheilus is distributed in Yun-Gui Plateau and its surrounding region only, within more than 10 cave species showing different degrees of degeneration of eyes and pigmentation with wonderful adaptations. To present, published morphological and molecular phylogenetic hypotheses of Sinocyclocheilus from prior works are very different and the relationships within the genus are still far from clear. We obtained the sequences of cytochrome b (cyt b) and NADH dehydrogenase subunit 4 (ND4) of 34 species within Sinocyclocheilus, which represent the most dense taxon sampling to date. We performed Bayesian mixed models analyses with this data set. Under this phylogenetic framework, we estimated the divergence times of recovered clades using different methods under relaxed mo-lecular clock. Our phyloegentic results supported the monophyly of Sinocyclocheilus and showed that this genus could be subdivided into 6 major clades. In addition, an earlier finding demonstrating the polyphyletic of cave species and the most basal position of S. jii was corroborated. Relaxed diver-gence-time estimation suggested that Sinocyclocheilus originated at the late Miocene, about 11 million years ago (Ma), which is older than what have been assumed.

关键词：中国洞穴鱼系统发育变异状况生长特点

Coupling Analysis of Tourism Development and Rural Revitalization in Yannanfei Tea Field Resort of Guangdong Province

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Journal of Landscape Research 2023年第6期15卷 55-58,64页

作者： chen Haiming LIU Jun ZENG Ziye FENG Jinhuan WU Xinyi WU Zhuohua chen yiyu Tourism and Historical Culture College Zhaoqing UniversityZhaoqingGuangdong 526000China Department of Music Zhaoqing UniversityZhaoqingGuangdong 526000China

By deconstructing the dimensions of rural tourism and rural revitalization and constructing a coupled conceptual model,a coupled evaluation model is constructed.Yannanfei Tea Field Resort in Guangdong is taken as a research case for empirical analysis,to explore the coupled development trend of the two.The results show that①the tourism development of Guangdong Yannanfei Tea Field Resort has a good synergistic relationship with rural revitalization.The two complement and promote each other,and rural tourism has significantly promoted the development of rural revitalization.②The coupling development of tourism development and rural revitalization in Guangdong Yannanfei Tea Field Resort is divided into coupling imbalance period and coupling coordination period.The results indicate that the coordination between the two has not yet reached a level of good coordination and high-quality coordination.It is recommended that the resort should fully utilize the opportunity of rural revitalization strategy,increase investment in rural tourism,promote the transformation and upgrading of the resort,impel the integration of tea and tourism,and develop new business model of tea-tourism rural vacation.

关键词： Guangdong Yannanfei Tea Field Resort Coupling analysis Rural revitalization

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地域文化背景影响下淮河路步行街改造

城市建筑 2024年第1期21卷 9-13页

作者：陈宜瑜陈润坤中国-葡萄牙文化遗产保护科学“一带一路”联合实验室安徽建筑大学建筑与规划学院

既有建筑改造成为一种不可避免的趋势,它能够提高建筑的实用性、安全性、舒适度和可持续性,同时也能够保留历史价值和文化价值。文章以合肥市淮河路步行街为例,针对其街道建设中存在的问题,以具有合肥地域特色的徽派文化、三国文化等城... 详细信息

既有建筑改造成为一种不可避免的趋势,它能够提高建筑的实用性、安全性、舒适度和可持续性,同时也能够保留历史价值和文化价值。文章以合肥市淮河路步行街为例,针对其街道建设中存在的问题,以具有合肥地域特色的徽派文化、三国文化等城市文化要素为基础,提出街道改造策略,并分别从建筑外立面设计、店铺装饰设计、景观设计等方面提出具体的改造措施。文章在探讨凸显城市文化的街道建筑改造更新方法的基础上,寻求地域文化与街道建筑的结合,以延续城市历史文脉,凸显地域特色。

关键词：既有建筑街道淮河路地域文化建筑改造