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Microsystems & Nanoengineering 2018年第1期4卷 223-233页

作者： Juan Pu Xiaohong Wang Renxiao xu sixing xu Kyriakos Komvopoulos Department of Microelectronics and Nanoelectronics Tsinghua UniversityBeijing 100084China Institute of Microelectronics Tsinghua UniversityBeijing 100084China Tsinghua National Laboratory for Information Science and Technology Beijing 100084China Department of Mechanical Engineering University of CaliforniaBerkeleyCA 94720USA

The design and functionality of extremely flexible,foldable,and rollable microsupercapacitors(MSCs)with in-plane interdigital electrodes that consist of single-walled carbon nanotube(SWCNT)networks on an ultrathin polyimide substrate are demonstrated through experiments and finite element *** all-solid-state MSCs can be reversibly bent,folded,and rolled purely elastically without degradation of their electrical *** simulation results confirm that the deformation in bent,folded,and rolled MSCs is purely *** high power density(1125W cm^(–3))and small time constant(1 ms)of the present MSCs are comparable to those of aluminum electrolytic *** MSCs operate at scan rates of up to 1000 V s^(–1),are characterized by a volumetric capacitance of 18 F cm^(–3) and an energy density of 1.6 mWh cm^(–3),and exhibit superior electrochemical stability with 96% capacity retention even after 100,000 charge/discharge *** developed MSCs demonstrate high potential for integration in flexible and wearable electronic systems.

关键词： purely Highly power

Multimodal MEMS vibration energy harvester with cascaded flexible and silicon beams for ultralow frequency response

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Microsystems & Nanoengineering 2023年第2期9卷 205-217页

作者： Haizhao Feng Ling Bu Zhangshanhao Li sixing xu Bingmeng Hu Minghao xu Siyao Jiang Xiaohong Wan School of Integrated Circuit Tsinghua University100084 BejingChina School of Information Engineering China University of Geosciences100083 BejingChina College of Semiconductors(College of Integrated circuits) Hunan University430001 ChangshaChina

Scavenged energy from ambient vibrations has become a promising energy supply for autonomous ***,restricted by device size,most MEMS vibration energy harvesters have much higher resonant frequencies than environmental vibrations,which reduces scavenged power and limits practical ***,we propose a MEMS multimodal vibration energy harvester with specifically cascaded flexible PDMS and"zigzag"silicon beams to simultaneously lower the resonant frequency to the ultralow-frequency level and broaden the bandwidth.A two-stage architecture is designed,in which the primary subsystem consists of suspended PDMS beams characterized by a low Young's modulus,and the secondary system consists of zigzag silicon *** also propose a PDMS lift-off process to fabricate the suspended flexible beams and the compatible microfabrication method shows high yield and good *** fabricated MEMS energy harvester can operate at ultralow resonant frequencies of 3 and 23 Hz,with an NPD index of 1.73μW/cm^(3)/g^(2)@3 *** factors underlying output power degradation in the low-frequency range and potential enhancement strategies are *** work offers new insights into achieving MEMS-scale energy harvesting with ultralow frequency response.

关键词： energy harvest harvesting

APPLICATIONS OF GRBNER BASIS FOR WEYL ALGEBRA

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数学理论与应用 2000年第2期20卷 56-58页

作者： sixing xu (Yueyang Teachers College,Hunan,)

This paper will prove that f≡g(modI) iff N F(f)=N F(g) for f,g∈K[x,],obtain a basis for the K vector space K[x,]/I,give the method for finding a Grbner basis of intersection of the left ideals I and J.

关键词： Weyl带数右理想 Groebner基应用

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纸厂定量/水分的智能控制研究(英文)

控制理论与应用 1999年第3期16卷 147-149页

作者：达飞鹏徐嗣鑫宋文忠东南大学自动化所

造纸生产过程中的定量／水分控制十分复杂，存在着大时延的问题．本文提出了三个智能控制算法用以解决大时延的问题．我们在实际中运用这些算法取得了较好的控制效果．应用和仿真结果说明了算法的有效性．

关键词：时延 PID 模糊逻辑控制

克服中国企业跨国并购双重劣势的新策略:中企境外身份作用机制的实证分析

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国际商务研究 2024年第3期45卷 45-60页

作者：赵蓓文徐思行上海社会科学院上海200020

近20年来,中资企业跨国并购活动既呈现高速增长特征,又表现出低于发达经济体甚至一些新兴经济体的并购交易完成率。中资企业开展跨国并购活动面临外来者劣势的影响,受到新兴经济体身份的来源国劣势危害。本文基于2003~2019年中资企业在... 详细信息

近20年来,中资企业跨国并购活动既呈现高速增长特征,又表现出低于发达经济体甚至一些新兴经济体的并购交易完成率。中资企业开展跨国并购活动面临外来者劣势的影响,受到新兴经济体身份的来源国劣势危害。本文基于2003~2019年中资企业在126个国家的跨国并购数据,建立反事实研究框架,使用多种匹配方法,实证证明了中资企业在实施跨国并购时使用境外子公司身份可以作为企业层面一项减少外来者劣势和来源国劣势危害、提高并购交易成功概率的主动性策略。异质性分析的结论显示,该策略在中资企业跨国并购的主要流向国家中均适用,对非发达经济体和新兴经济体采用该策略可以获得高约两倍的成功概率增幅。

关键词：中资企业跨国并购境外身份外来者劣势来源国劣势

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基于活动需求的校园空间认知研究——以武汉大学为例

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华中建筑 2024年第5期42卷 47-51页

作者：张霞徐思行武汉大学城市设计学院

建筑环境更关注中等尺度维度,了解使用者对此类环境的意象,对于环境的设计与优化具有重要意义。现有研究集中在空间认知规律方面,缺乏对校园空间认知与其他多种影响因素的关联分析。以环境行为认知理论为基础,通过手绘认知地图的定量分... 详细信息

建筑环境更关注中等尺度维度,了解使用者对此类环境的意象,对于环境的设计与优化具有重要意义。现有研究集中在空间认知规律方面,缺乏对校园空间认知与其他多种影响因素的关联分析。以环境行为认知理论为基础,通过手绘认知地图的定量分析,空间句法分析与POI分析等方法,深入探索校园空间认知规律,最后对校园空间进行评估并提出优化建议。研究发现:①空间结构对空间认知具有决定性影响;②必要活动需求对空间认知的影响大于自发活动需求;③环境或建筑的风格以及纪念意义可以对认知起到较大程度的积极或消极影响。

关键词：空间认知认知地图空间句法活动需求 POI(兴趣点)

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代数中的生成元

岳阳师范学院学报（自然科学版） 2000年第1期13卷 26-28页

作者：徐四星岳阳师范学院湖南岳阳414000

本又主要讨论交换代ｋ［ｘ_１，ｘ_１，…，ｘ_ｎ］中子代数、理想的生成元问题，并直接找出它们的一组生成元。

关键词：交换代数子代数理想生成元

Aquaporin-4-IgG-seropositive neuromyelitis optica spectrum disorders:progress of experimental models based on disease pathogenesis

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Neural Regeneration Research 2025年第2期20卷 354-365页

作者： Li xu Huiming xu Changyong Tang Department of Neurology The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina

Neuromyelitis optica spectrum disorders are neuroinflammatory demyelinating disorders that lead to permanent visual loss and motor *** date,no effective treatment exists as the exact causative mechanism remains ***,experimental models of neuromyelitis optica spectrum disorders are essential for exploring its pathogenesis and in screening for therapeutic *** most patients with neuromyelitis optica spectrum disorders are seropositive for IgG autoantibodies against aquaporin-4,which is highly expressed on the membrane of astrocyte endfeet,most current experimental models are based on aquaporin-4-IgG that initially targets *** experimental models have successfully simulated many pathological features of neuromyelitis optica spectrum disorders,such as aquaporin-4 loss,astrocytopathy,granulocyte and macrophage infiltration,complement activation,demyelination,and neuronal loss;however,they do not fully capture the pathological process of human neuromyelitis optica spectrum *** this review,we summarize the currently known pathogenic mechanisms and the development of associated experimental models in vitro,ex vivo,and in vivo for neuromyelitis optica spectrum disorders,suggest potential pathogenic mechanisms for further investigation,and provide guidance on experimental model *** addition,this review summarizes the latest information on pathologies and therapies for neuromyelitis optica spectrum disorders based on experimental models of aquaporin-4-IgG-seropositive neuromyelitis optica spectrum disorders,offering further therapeutic targets and a theoretical basis for clinical trials.

关键词： aquaporin-4 experimental model neuromyelitis optica spectrum disorder pathogenesis

Reducing the measurement errors in nonadiabatic holonomic quantum computers

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 64-70页

作者： Guo-Fu xu Department of Physics Shandong University

Nonadiabatic holonomic quantum computers serve as the physical platform for nonadiabatic holonomic quantum *** quantum computation has entered the noisy intermediate-scale era, building accurate intermediate-scale nonadiabatic holonomic quantum computers is clearly necessary. Given that measurements are the sole means of extracting information, they play an indispensable role in nonadiabatic holonomic quantum computers. Accordingly, developing methods to reduce measurement errors in nonadiabatic holonomic quantum computers is of great importance. However, while much attention has been given to the research on nonadiabatic holonomic gates, the research on reducing measurement errors in nonadiabatic holonomic quantum computers is severely lacking. In this study, we propose a measurement error reduction method tailored for intermediate-scale nonadiabatic holonomic quantum computers. The reason we say this is because our method can not only reduce the measurement errors in the computer but also be useful in mitigating errors originating from nonadiabatic holonomic gates. Given these features,our method significantly advances the construction of accurate intermediate-scale nonadiabatic holonomic quantum computers.

关键词： quantum holonomy quantum computation measurement errors

Mitophagy in acute central nervous system injuries:regulatory mechanisms and therapeutic potentials

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Neural Regeneration Research 2025年第9期20卷 2437-2453页

作者： Siyi xu Junqiu Jia Rui Mao Xiang Cao Yun xu Department of Neurology Nanjing Drum Tower HospitalClinical College of Jiangsu UniversityNanjingJiangsu ProvinceChina Department of Neurology Nanjing Drum Tower HospitalChinese Academy of Medical Science&Peking Union Medical CollegeNanjingJiangsu ProvinceChina Department of Neurology Nanjing Drum Tower HospitalAffiliated Hospital of Medical SchoolNanjing UniversityNanjingJiangsu ProvinceChina State Key Laboratory of Pharmaceutical Biotechnology and Institute of Translational Medicine for Brain Critical Diseases Nanjing UniversityNanjingJiangsu ProvinceChina Jiangsu Key Laboratory for Molecular Medicine Medical School of Nanjing UniversityNanjingJiangsu ProvinceChina Nanjing Neurology Medical Center NanjingJiangsu ProvinceChina

Acute central nervous system injuries,including ischemic stro ke,intracerebral hemorrhage,subarachnoid hemorrhage,traumatic brain injury,and spinal co rd injury,are a major global health *** optimal therapies and improving the long-term neurological functions of patients with acute central nervous system injuries are urgent *** are susceptible to damage after acute central nervous system injury,and this leads to the release of toxic levels of reactive oxygen species,which induce cell ***,a selective form of autophagy,is crucial in eliminating redundant or damaged mitochondria during these *** evidence has highlighted the significant role of mitophagy in acute central nervous system *** this review,we provide a comprehensive overview of the process,classification,and related mechanisms of *** also highlight the recent developments in research into the role of mitophagy in various acute central nervous system injuries and drug therapies that regulate *** the final section of this review,we emphasize the potential for treating these disorders by focusing on mitophagy and suggest future research paths in this area.

关键词： autophagy intracerebral hemorrhage ischemic stroke mitochondria mitochondrial biogenesis mitochondrial quality control mitophagy spinal cord injury subarachnoid hemorrhage traumatic brain injury