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A dynamically stable self-healable wire based on mechanical±electrical coupling

National science Review 2024年第3期 250-258页

作者： Shuo Wang Zhaofeng Ouyang Shitao Geng Yan Wang Xiaoju Zhao Bin Yuan Xiao zhang Qiuchen Xu Chengqiang Tang Shanshan Tang Han Miao Huisheng Peng Hao sun Frontiers science Center for Transformative Molecules School of Chemistry and Chemical EngineeringZhangjiang Institute for Advanced Studyand Key Laboratory of Green and High-End Utilization of Salt Lake Resources(Chinese Academy of Sciences)Shanghai Jiao Tong University State Key Laboratory of Molecular engineering of Polymers Department of Macromolecular Science Institute of Fiber Materials and Devices and Laboratory of Advanced MaterialsFudan University school of Materials science and engineering East China University of Science and Technology

The rise in wearable electronics has witnessed the advancement of self-healable wires, which are capable of recovering mechanical and electrical properties upon structural damage. However, their highly fluctuating electrical resistances in the range of hundreds to thousands of ohms under dynamic conditions such as bending, pressing, stretching and tremoring may seriously degrade the precision and continuity of the resulting electronic devices, thus severely hindering their wearable applications. Here, we report a new family of self-healable wires with high strengths and stable electrical conductivities under dynamic conditions, inspired by mechanical–electrical coupling of the myelinated axon in nature. Our self-healable wire based on mechanical–electrical coupling between the structural and conductive components has significantly improved the electrical stability under dynamic scenarios, enabling precise monitoring of human health status and daily activities, even in the case of limb tremors from simulated Parkinson's *** mechanical–electrical coupling strategy opens a new avenue for the development of dynamically stable electrodes and devices toward real-world wearable applications.

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INTERACTING MULTIPLE MODEL ALGORITHM BASED ON JOINT LIKELIHOOD ESTIMATION

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Journal of electronics(china) 2011年第Z1期 427-432页

作者： sun Jie Jiang Chaoshu Chen Zhuming zhang Wei(school of Electronic engineering,university of Electronic science and technology of china,Chengdu 611731,china)(Research Institute,university of Electronic science and technology of china,Chengdu 611731,china)

A novel approach is proposed for the estimation of likelihood on Interacting Multiple-Model(IMM) *** this approach,the actual innovation,based on a mismatched model,can be formulated as sum of the theoretical innovation based on a matched model and the distance between matched and mismatched models,whose probability distributions are *** joint likelihood of innovation sequence can be estimated by convolution of the two known probability density *** like-lihood of tracking models can be calculated by conditional probability *** with the conventional likelihood estimation method,the proposed method improves the estimation accuracy of likelihood and robustness of IMM,especially when maneuver occurs.

关键词： Maneuvering target tracking Multiple model Likelihood

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Cross section measurement for the^(232)Th(n,f)reaction in the 4.50−5.40 MeV region using a time projection chamber

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Chinese Physics C 2024年第10期48卷 157-167页

作者： Haofan Bai Han Yi Yankun sun Yiwei Hu Jie Liu Zepeng Wu Cong Xia Wenkai Ren Wentian Cao Tieshuan Fan Guohui zhang Ruirui Fan Yang Li Wei Jiang yonghao Chen You Lv Changjun Ning Weihua Jia Zhiyong zhang Haolei Chen Zhen Chen Maoyuan Zhao Changqing Feng Shubin Liu State Key Laboratory of Nuclear Physics and technology Institute of Heavy Ion PhysicsPeking UniversityBeijing 100871China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Spallation Neutron Source science Center Dongguan 523803China National Key Laboratory of Intense Pulsed Radiation Simulation and Effect Northwest Institute of Nuclear TechnologyXi'an 710024China Department of Nuclear science and technology School of Energy and Power EngineeringXi’an Jiaotong UniversityXi’an 710049China State Key Laboratory of Particle Detection and electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China

Accurate cross sections of neutron induced fission reactions are required in the design of advanced nuclear systems and the development of fission *** projection chambers(TPCs),with their track reconstruction and particle identification capabilities,are considered the best detectors for high-precision fission cross section *** TPC developed by the back-streaming white neutron source(Back-n)team of the china Spallation Neutron Source(CSNS)was used as the fission fragment detector in *** this study,the cross sections of the ^(232)Th(n,f)reaction at five neutron energies in the 4.50−5.40 MeV region were *** fission fragments and α particles were well identified using our TPC,which led to a higher detection efficiency of the fission fragments and smaller uncertainty of the measured cross *** is the first measurement of the ^(232)Th(n,f)reaction using a TPC for the detection of fission *** uncertainties less than 5%,our cross sections are consistent with the data in different evaluation libraries,including JENDL-4.0,ROSFOND-2010,CENDL-3.2,ENDF/B-VⅢ.0,and BROND-3.1,whose uncertainties can be reduced after future improvement of the measurement.

关键词： ^(232)Th(n,f)fission cross section time projection chamber(TPC) ^(232)Th

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Document Categorization Algorithm Based on Kernel NPE

Document Categorization Algorithm Based on Kernel NPE

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2009中国控制与决策会议

作者： Ziqiang Wang,Xia sun,Qingzhou zhang school of Information science and engineering,Henan university of technology,Zhengzhou 450001,china

＜正＞To efficiently tackle document classification problem,a novel document classification algorithm based on kernel neighborhood preserving embedding（KNPE） is proposed in this *** discriminant features are first extracted by the KNPE algorithm,then SVM is used to classify the documents into semantically different classes. Experimental results on real document databases have demonstrated the better performance of the proposed algorithm.

关键词： Document classification Kernel method Neighborhood preserving embedding Data mining

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Using LPP and SFL for Document Query Optimization

Using LPP and SFL for Document Query Optimization

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2009中国控制与决策会议

作者： Ziqiang Wang,Qingzhou zhang,Xia sun school of Information science and engineering,Henan university of technology,Zhengzhou 450001,china

＜正＞To efficiently cope with document query optimization problem,an efficient document query optimization algorithm based on locality preserving projection（LPP） and shuffled frog leaping（SFL） algorithm is presented in this *** document discriminant features are first extracted by the LPP algorithm,then the SFL algorithm is used to retrieval relevant documents based on the extracted *** experimental results show that the proposed algorithm achieves much better performance than other conventional document query optimization algorithms.

关键词： Query optimization Locality preserving projection(LPP) Shuffled frog leaping(SFL) algorithm

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基于极大似然估计的非理想场景雷达信号分选算法

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系统工程与电子技术 2024年第7期46卷 2276-2284页

作者：陈柯宇杨健张伟孙国敏邵怀宗电子科技大学信息与通信工程学院四川成都611731 电磁空间认知与智能控制技术实验室北京100089 北京理工大学网络空间安全学院北京100089 电磁空间安全全国重点实验室四川成都610036

目前,已有研究针对理想条件下的雷达脉冲信号分选问题进行了详细阐述,但是缺乏杂散脉冲和缺失脉冲两种非理想情景下的模型表征。为解决这一问题,提出了一种基于极大似然估计的非理想场景雷达信号分选算法。该算法通过修正似然因子来表... 详细信息

目前,已有研究针对理想条件下的雷达脉冲信号分选问题进行了详细阐述,但是缺乏杂散脉冲和缺失脉冲两种非理想情景下的模型表征。为解决这一问题,提出了一种基于极大似然估计的非理想场景雷达信号分选算法。该算法通过修正似然因子来表征杂散脉冲和缺失脉冲现象,提高在复杂场景下的分选准确率。当部分雷达先验信息已知时,所提算法模型具有更好的分选效果。仿真实验结果表明,与已有的极大似然模型和深度学习算法相比,所提算法在分选准确率上有显著提升,具有较高的应用价值。

关键词：雷达信号分选脉冲重复间隔电子侦察极大似然估计

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Tunable superconducting resonators via on-chip control of local magnetic field

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Chinese Physics B 2024年第5期33卷 674-679页

作者：王晨光岳文诚涂学凑迟天圆郭婷婷吕阳阳董思宁曹春海张蜡宝贾小氢孙国柱康琳陈健王永磊王华兵吴培亨 Research Institute of Superconductor electronics School of Electronic Science and EngineeringNanjing UniversityNanjing 210023China Purple Mountain Laboratories Nanjing 211111China National Key Laboratory of Spintronics Nanjing UniversitySuzhou 215163China Hefei National Laboratory Hefei 230094China

Superconducting microwave resonators play a pivotal role in superconducting quantum *** ability to finetune their resonant frequencies provides enhanced control and ***,we introduce a frequency-tunable superconducting coplanar waveguide *** applying electrical currents through specifically designed ground wires,we achieve the generation and control of a localized magnetic field on the central line of the resonator,enabling continuous tuning of its resonant *** demonstrate a frequency tuning range of 54.85 MHz in a 6.21-GHz *** integrated and tunable resonator holds great potential as a dynamically tunable filter and as a key component of communication buses and memory elements in superconducting quantum computing.

关键词： superconducting resonator NbN kinetic inductance tunable resonator

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Design on Pitch-control Wind Turbine System Based on Bladed

Design on Pitch-control Wind Turbine System Based on Bladed

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2011 Chinese Control and Decision Conference（CCDC）

作者： Lei zhang and Xiangzhou Lv are with the school of Control science and engineering,Hebei university of technology Yingguang sun is with the school of Electrical engineering,Hebei university of technology

This paper derives the relationship between the drag coefficient and the electrical power of the generator by deducing the connection between the drag coefficient and the rotor power *** efficiency losing state of running is introduced to the simulation of the aging of the blade and the control strategy that combining the pitch control and generator torque-speed control is utilized under the efficiency losing state of *** simulation results of the software Bladed display that the wind turbine operates safely by using the strategy under the failure operation.

关键词： Generator torque-speed control Aging of blade Efficiency losing state of running Bladed simulation

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Investigation on inductive heating of A356 alloy for thixo-forming

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International Journal of Minerals,Metallurgy and Materials 2009年第3期16卷 309-313页

作者： Kai-kun Wang Jian-lin sun yong-lin Kang Qi zhang Lei Yang Chun-mei Ma school of Materials science and engineering University of Science and Technology Beijing 100083 Beijing China East-china Micro-electronic Institute of technology 230022 Hefei China

To meet the demands of continuous stream-line for component production in the thixo-forming industry, billet heating should be of high quality and in a controllable way. A 4-step inductive heating strategy for aluminum alloy A356 was performed. Thixotropic testing and microstructure analysis showed that a homogenous temperature distribution was achieved after temperature-power-time optimization. Theoretical analysis was given concerning the thermal conductivity and heat capacity of A356 between conventional and semisolid casting microstructures. The experimental results show that the optimized 4-step strategy could be the best strategy for billet heating during the thixo-forming of aluminum alloy A356.

关键词： Thixo-forming aluminum alloys inductive heating temperature distribution

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Adaptive spectral affinity propagation clustering

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Journal of Systems engineering and electronics 2022年第3期33卷 647-664页

作者： TANG lin sun Leilei GUO Chonghui zhang Zhen Institute of Systems engineering Dalian University of TechnologyDalian 116024China school of Computer science and engineering Beihang UniversityBeijing 100191China

Affinity propagation(AP)is a classic clustering *** improve the classical AP algorithms,we propose a clustering algorithm namely,adaptive spectral affinity propagation(AdaSAP).In particular,we discuss why AP is not suitable for non-spherical clusters and present a unifying view of nine famous arbitrary-shaped clustering *** propose a strategy of extending AP in non-spherical clustering by constructing category similarity of *** the monotonicity that the clusters’number increases with the self-similarity in AP,we propose a model selection procedure that can determine the number of clusters *** the parameters introduced by extending AP in non-spherical clustering,we provide a grid-evolving strategy to optimize them *** effectiveness of AdaSAP is evaluated by experiments on both synthetic datasets and real-world clustering *** results validate that the superiority of AdaSAP over benchmark algorithms like the classical AP and spectral clustering algorithms.

关键词： affinity propagation(AP) Laplacian eigenmap(LE) arbitrary-shaped cluster model selection

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