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| 1 | Data-based Fault Tolerant Control for Affine Nonlinear Systems Through Particle Swarm Optimized Neural Networks显示文摘In this paper, a data-based fault tolerant control(FTC) scheme is investigated for unknown continuous-time(CT)affine nonlinear systems with actuator faults. First, a neural network(NN) identifier based on particle swarm optimization(PSO) is constructed to model the unknown system dynamics. By utilizing the estimated system states, the particle swarm optimized critic neural network(PSOCNN) is employed to solve the Hamilton-Jacobi-Bellman equation(HJBE) more efficiently.Then, a data-based FTC scheme, which consists of the NN identifier and the fault compensator, is proposed to achieve actuator fault tolerance. The stability of the closed-loop system under actuator faults is guaranteed by the Lyapunov stability theorem. Finally, simulations are provided to demonstrate the effectiveness of the developed method. | Haowei Lin Bo Zhao Derong Liu Cesare Alippi | 2020 | IEEE/CAA Journal of Automatica Sinica2020，7，4： | 13 |
| 2 | First dark matter search results from the PandaX-Ⅰ experiment显示文摘We report on the first dark-matter(DM)search results from PandaX-I,a low threshold dual-phase xenon experiment operating at the China JinPing Underground Laboratory.In the 37-kg liquid xenon target with 17.4 live-days of exposure,no DM particle candidate event was found.This result sets a stringent limit for low-mass DM particles and disfavors the interpretation of previously-reported positive experimental results.The minimum upper limit,3.7×10-44cm2,for the spin-independent isoscalar DM-particle-nucleon scattering cross section is obtained at a DM-particle mass of 49 GeV/c2at 90%confidence level. | XIAO MengJiao XIAO Xiang ZHAO Li CAO XiGuang CHEN Xun CHEN YunHua CUI XiangYi FANG DeQing FU ChangBo GIBONI Karl L. GONG HaoWei GUO GuoDong HU Jie HUANG XingTao JI XiangDong JU YongLin LEI SiAo LI ShaoLi LIN Qing LIU HuaXuan LIU JiangLai LIU Xiang LORENZON Wolfgang MA YuGang MAO YaJun NI KaiXuan PUSHKIN Kirill REN XiangXiang SCHUBNELL Michael SHEN ManBing STEPHENSON Scott TAN AnDi TARL Greg WANG HongWei WANG JiMin WANG Meng WANG XuMing WANG Zhou WEI YueHuan WU ShiYong XIE PengWei YOU YingHui ZENG XiongHui ZHANG Hua ZHANG Tao ZHU ZhongHua | 2014 | Science China(Physics,Mechanics & Astronomy)2014，57，11： | 10 |
| 3 | PandaX: a liquid xenon dark matter experiment at CJPL显示文摘PandaX is a large liquid-xenon detector experiment usable for direct dark-matter detection and 136Xe double-beta decay search.The central vessel was designed to accommodate a staged target volume increase from initially 120 kg(stage I)to 0.5 t(stage II)and eventually to a multi-ton scale.The experiment is located in the Jinping Deep-Underground Laboratory in Sichuan,China.The detector operates in dual-phase mode,allowing detection of both prompt scintillation,and ionization charge through proportional scintillation.In this paper a detailed description of the stage I detector design and performance as well as results established during the commissioning phase are presented. | CAO XiGuang CHEN Xun CHEN YunHua CUI XiangYi FANG DeQing FU ChangBo GIBONI Karl L. GONG HaoWei GUO GuoDong HE Ming HU Jie HUANG XingTao JI XiangDong JU YongLin LI ShaoLi LIN Qing LIU HuaXuan LIU JiangLai LIU Xiang LORENZON Wolfgang MA YuGang MAO YaJun NI KaiXuan PUSHKIN Kirill REN XiangXiang SCHUBNELL Michael SHEN ManBing SHI YuJie STEPHENSON Scott TAN AnDi TARLé Greg WANG HongWei WANG JiMing WANG Meng WANG XuMing WANG Zhou WEI YueHuan WU ShiYong XIAO MengJiao XIAO Xiang XIE PengWei YE Tao YOU YingHui ZEN XiongHui ZHANG Hua ZHANG Tao ZHAO HaiYing ZHAO Li ZHOU XiaoPeng ZHU ZhongHua | 2014 | Science China(Physics,Mechanics & Astronomy)2014，57，8： | 9 |
| 4 | Te-mediated electro-driven oxygen evolution reaction显示文摘In the 21^(st)century,the rapid development of human society has made people’s demand for green energy more and more urgent.The high-energy-density hydrogen energy obtained by fully splitting water is not only environmentally friendly,but also is expected to solve the problems caused by the intermittent nature of new energy.However,the slow kinetics and large overpotential of the oxygen evolution reaction(OER)limit its application.The introduction of Te element is expected to bring new breakthroughs.With the least electronegativity among the chalcogens,the Te element has many special properties,such as multivalent states,strong covalentity,and high electrical conductivity,which make it a promising candidate in electrocatalytic OER.In this review,we introduce the peculiarities of Te element,summarize Te doping and the extraordinary performance of its compounds in OER,with emphasis on the scientific mechanism behind Te element promoting the OER kinetic process.Finally,challenges and development prospects of the applications of Te element in OER are presented. | Feng Gao Jiaqing He Haowei Wang Jiahui Lin Ruixin Chen Kai Yi Feng Huang Zhang Lin Mengye Wang | 2022 | Nano Research Energy2022，1，3： | 1 |
| 5 | Chip-scale spontaneous quasi-phase matched second harmonic generation in a micro-racetrack resonator显示文摘In this paper,we demonstrate efficient spontaneous quasi-phase matched(SQPM)second harmonic generation(SHG)in a microracetrack resonator on X-cut thin film lithium niobate.Our approach does not involve poling,but exploits the anisotropy of the crystals to allow the phase-matching condition to be fulfilled spontaneously as the TE-polarized light circulates in a specifically designed racetrack resonator.In experiment,normalized on-chip conversion efficiencies of 1.01×10-4/W and 0.43×10-4/W are achieved by 37th-order and 111th-order SQPM,respectively.The configurable SQPM will benefit the application of nonlinear frequency conversion and quantum source generation in chip-scale integrated photonics compatible with standard CMOS fabrication processes. | Tingge Yuan Jiangwei Wu Yi'an Liu Xiongshuo Yan Haowei Jiang Hao Li Zhaokang Liang Qiang Lin Yuping Chen Xianfeng Chen | 2023 | Science China(Physics,Mechanics & Astronomy)2023，66，8： | 1 |
| 6 | Mapless navigation for UAVs via reinforcement learning from demonstrations显示文摘This paper is concerned with the problems of mapless navigation for unmanned aerial vehicles in the scenarios with limited sensor accuracy and computing capability.A novel learning-based algorithm called soft actor-critic from demonstrations(SACfD)is proposed,integrating reinforcement learning with imitation learning.Specifically,the maximum entropy reinforcement learning framework is introduced to enhance the exploration capability of the algorithm,upon which the paper explores a way to sufficiently leverage demonstration data to significantly accelerate the convergence rate while improving policy performance reliably.Further,the proposed algorithm enables an implementation of mapless navigation for unmanned aerial vehicles and experimental results show that it outperforms the existing algorithms. | YANG JiaNan LU ShengAo HAN MingHao LI YunPeng MA YuTing LIN ZeFeng LI HaoWei | 2023 | Science China(Technological Sciences)2023，66，5： | 0 |
| 7 | INTERACTION OF PARTICLES WITH A SOLIDIFIED INTERFACE DURING SOLIDIFICATION OF METAL MATRIX COMPOSITE REINFORCED WITH PARTICLES显示文摘INTERACTIONOFPARTICLESWITHASOLIDIFIEDINTERFACEDURINGSOLIDIFICATIONOFMETALMATRIXCOMPOSITEREINFORCEDWITHPARTICLESCHUShuangjie;W... | CHU Shuangjie WANG Haowei WU Renjie LIN Xiaotang(Institute of Composite Materials,Shanghai Jiaotong University,Shanghai 200030,China | 1996 | Acta Metallurgica Sinica(English Letters)1996，9，1： | 0 |
| 8 | Recent advances in organic-dye-based photoacoustic probes for biosensing and bioimaging显示文摘Photoacoustic imaging(PAI) is a non-destructive biomedical imaging technology with broad application prospects. PAI combines the advantages of optical imaging and ultrasound imaging with high selectivity and deep penetration to overcome the high scattering limitation of light in tissues. This emerging technology also achieves high-resolution and high-contrast imaging of deep tissue in vivo. Recently, photoacoustic(PA) probes based on organic dyes have emerged prominently in biosensing and bioimaging due to their excellent optical properties and structural adaptability. This paper gives an outline of the basic PAI principles and focuses on the application of organic-dye-based PA probes for molecular detection and in vivo imaging. The advantages of PAI technology and the drawbacks of current PA probes are then summarized. Finally, the prospects for application are evaluated considering the potential challenges in the biomedical fields. | Yongchao Liu Lili Teng Hong-Wen Liu Chengyan Xu Haowei Guo Lin Yuan Xiao-Bing Zhang Weihong Tan | 2019 | Science China Chemistry2019，62，10： | 0 |
| 9 | Robust reinforcement learning with UUB guarantee for safe motion control of autonomous robots显示文摘This paper addresses the issue of safety in reinforcement learning(RL)with disturbances and its application in the safety-constrained motion control of autonomous robots.To tackle this problem,a robust Lyapunov value function(rLVF)is proposed.The rLVF is obtained by introducing a data-based LVF under the worst-case disturbance of the observed state.Using the rLVF,a uniformly ultimate boundedness criterion is established.This criterion is desired to ensure that the cost function,which serves as a safety criterion,ultimately converges to a range via the policy to be designed.Moreover,to mitigate the drastic variation of the rLVF caused by differences in states,a smoothing regularization of the rLVF is introduced.To train policies with safety guarantees under the worst disturbances of the observed states,an off-policy robust RL algorithm is proposed.The proposed algorithm is applied to motion control tasks of an autonomous vehicle and a cartpole,which involve external disturbances and variations of the model parameters,respectively.The experimental results demonstrate the effectiveness of the theoretical findings and the advantages of the proposed algorithm in terms of robustness and safety. | ZHANG RuiXian HAN YiNing SU Man LIN ZeFeng LI HaoWei ZHANG LiXian | 2024 | Science China(Technological Sciences)2024，67，1： | 0 |
| 10 | KVPO_(4)F/carbon nanocomposite with highly accessible active sites and robust chemical bonds for advanced potassium-ion batteries显示文摘KVPO_(4)F(KVPF)has been extensively investigated as the potential cathode material for potassium-ion batteries(PIBs)owing to its high theoretical capacity,superior operating voltage,and three-dimensional Kt conduction pathway.Nevertheless,the electrochemical behavior of KVPF is limited by the inherent poor electronic conductivity of the phosphate framework and unstable electrode/electrolyte interface.To address the above issues,this work proposes an infiltration-calcination method to confine the in-situ grown KVPF into the mesoporous carbon CMK-3(denoted KVPF@CMK-3).The assembled KVPF@CMK-3 nanocomposite features three-dimensional interconnected carbon channels,which not only offer abundant active sites and significantly accelerate K t/electron transport,but also prevent the growth of KVPF nanoparticle agglomerates,hence stabilizing the structure of the material.Additionally,V–F–C bonds are created at the interface of KVPF and CMK-3,which reduce the loss of F and stabilize the electrode interface.Thus,when tested as a cathode material for PIBs,the KVPF@CMK-3 nanocomposite delivers superior reversible capacitiy(103.2 mAh g^(-1) at 0.2 C),outstanding rate performance(90.1 mAh g^(-1) at 20 C),and steady cycling performance(92.2 mAh g^(-1) at 10 C and with the retention of 88.2%after 500 cycles).Moreover,its potassium storage mechanism is further examined by ex-situ XRD and ex-situ XPS techniques.The above synthetic strategy demonstrates the potential of KVPF@CMK-3 to be applied as the cathode for PIBs. | Jianzhi Xu Liping Duan Jiaying Liao Haowei Tang Jun Lin Xiaosi Zhou | 2023 | Green Energy & Environment2023，8，5： | 0 |
| 11 | Fabrication and Characterization of PMMA/MWCNTs Composite Materials显示文摘In order to improve the mechanical properties and thermal conductivity of polymethyl methacrylate(PMMA),multi-walled carbon nanotubes(MWCNTs)were used as reinforcement through in situ polymerization method to prepare PMMA/MWCNTs composites by changing the reaction time,polymerization temperature and the content of MWCNTs.The effects of different reaction conditions on the properties of the composites were studied.The results show that the mechanical properties,thermal/electrical conductivity and thermal stability of the composites are improved compared with the PMMA matrix.The tensile strength of the composites is increased by up to 24%.The bending strength of the composite material increases from20.41 to 68.04 MPa,and the maximum increase is 233%.Meanwhile,when the content of MWCNTs is 3 wt%,the thermal conductivity of the composite is 0.335 W/(m·K),which increases by138%,and the electrical conductivity is 3.94 S/m.The thermal stability of the composite has been significantly enhanced.The modified PMMA will be widely used in medicine,communications,electronics and other fields. | SHANG Mengya MIAO Wei JIA Dongqing CHENG Wenxi ZHANG Xin WANG Qiang LIN Haowei LI Jinling | 2023 | Journal of Wuhan University of Technology(Materials Science)2023，38，5： | 0 |
| 12 | Microbial diversity in lake sediments detected by PCR-DGGE显示文摘In this study,PCR-denaturing gradient gel electrophoresis(DGGE)was applied to analyze the microbial communities in lake sediments from Lake Xuanwu,Lake Mochou in Nanjing and Lake Taihu in Wuxi.Sediment samples from seven locations in three lakes were collected and their genomic DNAs were extracted.The DNA yields of the sediments of Lake Xuanwu and Lake Mochou were high(10 mg/g),while that of sediments in Lake Taihu was relatively low.After DNA purification,the 16S rDNA genes(V3 to V5 region)were amplified and the amplified DNA fragments were separated by parallel DGGE.The DGGE profiles showed that there were five common bands in all the lake sediment samples indicating that there were similarities among the populations of microorganisms in all the lake sediments.The DGGE profiles of Lake Xuanwu and Lake Mochou were similar and about 20 types of micro-organisms were identified in the sediment samples of both lakes.These results suggest that the sediment samples of these two city lakes(Xuanwu,Mochou)have similar microbial communities.However,the DGGE profiles of sediment samples in Lake Taihu were significantly different from these two lakes.Furthermore,the DGGE profiles of sediment samples in different locations in Lake Taihu were also different,suggesting that the microbial communities in Lake Taihu are more diversified than those in Lake Xuanwu and Lake Mochou.The differences in microbial diversity may be caused by the different environmental conditions,such as redox potential,pH,and the concentrations of organic matters.Seven major bands of 16S rDNA genes fragments from the DGGE profiles of sediment samples were further reamplified and sequenced.The results of sequencing analysis indicate that five sequences shared 99%-100%homology with known sequences(Bacillus and Brevibacillus,uncultured bacteria),while the other two sequences shared 93%-96%homology with known sequences(Acinetobacter,and Bacillus).The study shows that the PCR-DGGE technique combined with sequence analysis is a feasible and efficient method for the determination of microbial communities in sediment samples. | Xinqing ZHAO Liuyan YANG Can CHEN Lin XIAO Lijuan JIANG Zhe MA Haowei ZHU Zhenyang YU Daqiang YIN | 2008 | Frontiers in Biology2008，3，3： | 0 |
| 13 | Mutations of MSH5 in nonobstructive azoospermia(NOA)and rescued via in vivo gene editing显示文摘Dear Editor,Male infertility is a multifactorial heterogeneous pathological condition affecting∼7%of men.Nonobstructive azoospermia(NOA)is one of the most severe male reproductive diseases and occurs in∼1%of men of reproductive age.1 However,its etiology remains elusive. | Min Chen Chencheng Yao Yingying Qin Xiuhong Cui Peng Li Zhiyong Ji Limei Lin Haowei Wu Zhi Zhou Yaoting Gui Zheng Li Fei Gao | 2022 | Signal Transduction and Targeted Therapy2022，7，2： | 0 |
| 14 | RSBP15 interacts with and stabilizes dRSPH3 during sperm axoneme assembly in Drosophila显示文摘Flagellum in sperm is composed of over 200 different proteins and is essential for sperm motility. In particular, defects in the assembly of the radial spoke in the flagellum result in male infertility due to loss of sperm motility. However, mechanisms regulating radial spoke assembly remain unclear in metazoans.Here, we identified a novel Drosophila protein radial spoke binding protein 15(RSBP15) which plays an important role in regulating radial spoke assembly. Loss of RSBP15 results in complete lack of mature sperms in seminal vesicles(SVs), asynchronous individualization complex(IC) and defective '9 + 2'structure in flagella. RSBP15 is colocalized with dRSPH3 in sperm flagella, and interacts with dRSPH3 through its DD_R_PKA superfamily domain which is important for the stabilization of dRSPH3. Moreover,loss of dRSPH3, as well as dRSPH1, dRSPH4 a and dRSPH9, showed similar phenotypes to rsbp15 KO mutant. Together, our results suggest that RSBP15 acts in stabilizing the radial spoke protein complex to anchor and strengthen the radial spoke structures in sperm flagella. | Ya Wang Rui Xu Yiwei Cheng Haowei Cao Zibin Wang Tianyu Zhu Jiayin Jiang Hao Zhang Chang Wang Lin Qi Mingxi Liu Xuejiang Guo Juan Huang Jiahao Sha | 2019 | Journal of Genetics and Genomics2019，46，6： | 0 |
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