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23篇 您的检索式:作者名="Wang Shaoyu"
    题名 作者 年代 出处 被引量
1Risk Assessment Framework and Algorithm of Power Systems Based on the Partitioned Multi-objective Risk Method显示文摘针对平均风险指标无法区分高损失-低概率事件及低损失-高概率事件的缺点,提出了电力系统的分割多目标风险分析框架。该框架将电力系统的风险状态细分为低损失、中等损失和高损失3个风险范围,并提出3个损失范围条件风险函数和条件风险概率的概念。采用经典的容量停运表模型,建立了这些条件期望指标的计算方法。对IEEE-RTS及TH-RTS2000系统进行了分割多目标风险评估,研究不同负荷水平下系统风险在3个损失范围的分布及转移情况,并分析损失分割点对系统风险的影响。通过分割多目标风险分析,风险分析者和决策者可以权衡系统的平均风险以及高、中、低损失范围的条件期望风险,从而对系统的风险状况有一个全面和深入的了解。XIE Shaoyu WANG Xiuli WANG Xifan 2011中国电机工程学报2011,31,34:11
2Relationship of microstructure transformation and hardening behavior of type 17-4 PH stainless steel显示文摘The relationship between the microstructure transformation of type 17-4 PH stainless steel and the aging hardening be- havior was investigated. The results showed that, when 17-4 PH stainless steel aging at 595°C, the bulk hardness of samples attains its peak value (42.5 HRC) for about 20 min, and then decreases at all time. TEM revealed the microstructure corresponding with peak hardness is that the fine spheroid-shape copper with the fcc crystal structure and the fiber-shape secondary carbide M23C6 precipitated from the lath martensite matrix. Both precipitations of copper and M23C6 are the reasons for strengthening of the alloy at this tem- perature. With the extension of holding time at this temperature, the copper and secondary carbide grow and lose the coherent rela- tionship with the matrix, so the bulk hardness of samples decreases.Jun Wang Hong Zou Cong Li Ruling Zuo Shaoyu Qiu Baoluo Shen 2006Journal of University of Science and Technology Beijing2006,13,3:10
3The calcium-dependent protein kinase ZmCDPK7 functions in heat-stress tolerance in maize显示文摘Global warming poses a serious threat to crops.Calcium-dependent protein kinases(CDPKs)/CPKs play vital roles in plant stress responses,but their exact roles in plant thermotolerance remains elusive.Here,we explored the roles of heat-induced ZmCDPK7 in thermotolerance in maize.ZmCDPK7-overexpressing maize plants displayed higher thermotolerance,photosynthetic rates,and antioxidant enzyme activity but lower H2 O2 and malondialdehyde(MDA)contents than wild-type plants under heat stress.ZmCDPK7-knockdown plants displayed the opposite patterns.ZmCDPK7 is attached to the plasma membrane but can translocate to the cytosol under heat stress.ZmCDPK7 interacts with the small heat shock protein sHSP17.4,phosphorylates sHSP17.4 at Ser-44 and the respiratory burst oxidase homolog RBOHB at Ser-99,and up regulates their expression.Site-directed mutagenesis of sHSP17.4 to generate a Ser-44-Ala substitution reduced ZmCDPK7’s enhancement of catalase activity but enhanced ZmCDPK7’s suppression of MDA accumulation in heat-stressed maize protoplasts.sHSP17.4,ZmCDPK7,and RBOHB were less strongly upregulated in response to heat stress in the abscisic acid-deficient mutant vp5 versus the wild type.Pretreatment with an RBOH inhibitor suppressed sHSP17.4 and ZmCDPK7 expression.Therefore,abscisic acid-induced ZmCDPK7 functions both upstream and downstream of RBOH and participates in thermotolerance in maize by mediating the phosphorylation of sHSP17.4,which might be essential for its chaperone function.Yulong Zhao Hanwei Du Yankai Wang Huali Wang Shaoyu Yang Chaohai Li Ning Chen Hao Yang Yihao Zhang Yulin Zhu Luyao Yang Xiuli Hu 2021Journal of Integrative Plant Biology2021,63,3:6
4Advances in spaceborne hyperspectral remote sensing in China显示文摘With the maturation of satellite technology,Hyperspectral Remote Sensing(HRS)platforms have developed from the initial ground-based and airborne platforms into spaceborne platforms,which greatly promotes the civil application of HRS imagery in the fields of agriculture,forestry,and environmental monitoring.China is playing an important role in this evolution,especially in recent years,with the successful launch and operation of a series of civil hyper-spectral spacecraft and satellites,including the Shenzhou-3 spacecraft,the Gaofen-5 satellite,the SPARK satellite,the Zhuhai-1 satellite network for environmental and resources monitoring,the FengYun series of satellites for meteorological observation,and the Chang’E series of spacecraft for planetary exploration.The Chinese spaceborne HRS platforms have various new characteristics,such as the wide swath width,high spatial resolution,wide spectral range,hyperspectral satellite networks,and microsatellites.This paper focuses on the recent progress in Chinese spaceborne HRS,from the aspects of the typical satellite systems,the data processing,and the applications.In addition,the future development trends of HRS in China are also discussed and analyzed.Yanfei Zhong Xinyu Wang Shaoyu Wang Liangpei Zhang 2021Geo-Spatial Information Science2021,24,1:5
5Oxidative stress and oxidative damage in chemical carcinogenesis显示文摘James E. Klaunig Zemin Wang Xinzhu Pu Shaoyu Zhou 2011Toxicology and Applied Pharmacology2011,,2:1
6The spinodal decomposition in 17-4PH stainless steel subjected to long-term aging at 350℃显示文摘Wang Jun Zou Hong Li Cong Qiu Shaoyu Shen Baoluo 2008Mater Charact2008,59,:1
7A demand response and battery storage coordination algorithm for providing microgrid tie-line smoothing services显示文摘Wang Dan Ge Shaoyue Jia Hongjie 2014IEEE Transactions on Sustainable Energy2014,5,2:1
8A comparison of methods for multi-class support vector machines 显示文摘Li Huaqing Qi Feihu Wang Shaoyu 2005Computational Science and Its Applications-ICCSA2005,,:1
9On-chip Spectrometer Formed by a Multi-stage Structure显示文摘With apparent size and weight advantages,on-chip spectrometer could be a good choice for the spectrum analysis application which has been widely used in numerous areas such as optical network performance monitoring,materials analysis and medical research.In order to realize the broadband and the high resolution simultaneously,we propose a new on-chip spectrometer structure,which is a two-stage structure.The coarse wavelength division is realized by the cascaded Mach-Zehnder interferometers,which is the first stage of the spectrometer.The output of the Mach-Zehnder interferometers are further dispersed by the second stage structure,which can be realized either by arrayed waveguide gratings or by digital Fourier transform spectrometer structure.We further implemented the thermo-optic modulation for the arrayed waveguide gratings to achieve a higher spectral resolution.The output channel wavelengths of the spectrometer are modulated by the embedded heater to obtain the first order derivative spectra of the input optical signal to obtain a 2nm resolution.With respect to the computer simulation and device characterization results,the 400nm spectral range and the nanoscale resolution have been demonstrated.Weiping Wang Li Jin Shaoyu Zhao Zhipeng Hu Xiaoyan Hu 2019Semiconductor Science and Information Devices2019,1,1:0
10SO_(2)-Insertion induced enantioselective oxysulfonylation to access β-chiral sulfones with quaternary carbon stereocenters显示文摘β-Chiral sulfones are structural motifs widely found in natural products and bioactive molecules, while also serving as important intermediates for the synthesis of valuable chiral scaffolds. In contrast to the rapid growth of sulfur dioxide insertion chemistry over the last decade, enantioselective catalytic variants for accessing β-chiral sulfones, especially those bearing a quaternary carbon stereocenter, remain rare. Herein, we report an enantioselective copper/bisoxazoline catalyzed oxysulfonylation of alkenes to yield isoxazolinyl-containing β-chiral sulfones bearing quaternary carbon stereocenters with moderate to excellent yields and up to 96:4 er. The advantage and irreplaceability of this sulfur dioxide insertion catalytic system have been demonstrated by achieving transformations clearly unavailable with the previously reported sulfonyl chloride system. Additionally,the recoverability of the new-developed bisoxazoline ligand L9 and its reusability without any erosion of the catalytic activity and enantioselectivity further demonstrate the usefulness of the protocol.Jun Zhang Xuefeng Wang Peiqi Wang Jiayuan Fang Shaoyu Li Jie Wu 2024Science China Chemistry2024,67,3:0
11Lubrication Performance of Connecting-Rod and Main Bearing in Di erent Engine Operating Conditions显示文摘Only the lubrication performance at rated engine operating condition was generally analyzed in current design and research of engine connecting-rod and main bearing. However, the actual engine(especially vehicle engine) does not always operate in rated operating condition and its operating condition changes constantly. In this paper, a fourstroke four-cylinder engine is taken as the studying object, the load and lubrication of connecting-rod and main bearing in di erent operating conditions are analyzed. The load of connecting-rod bearing is calculated by the dynamic calculation method, the loads of all main bearings are calculated by the whole crankshaft beam-element finite element method, and the lubrication performance of connecting-rod and main bearings are analyzed by the dynamic method. The results show that there are major di erences in the changes and numerical value at corresponding moment of the loads and lubrication performance of connecting-rod and main bearings in an engine operating cycle in di erent engine operating conditions; the most unfavorable case of the lubrication performance of connectingrod and main bearings may not take place in the rated engine operating condition. There are also major di erences between the lubrication performance of connecting-rod bearing and that of main bearing and between the lubrication performances of main bearings one another. Therefore, it will not be reasonable that the lubrication performance of a certain connecting-rod bearing or main bearing is analyzed in the design of the engine bearing. It is necessary to analyze simultaneously the lubrication performances of all bearings in di erent engine operating conditions.Jun Sun Biao Li Shaoyu Zhu Enming Miao Hu Wang Xiaoyong Zhao Qin Teng 2019Chinese Journal of Mechanical Engineering2019,32,2:0
12Why is metallic Pt the best catalyst for methoxy decomposition?显示文摘The decomposition of methoxy on Cu(111), Ag(111), Au(111), Ni(111), Pt(111), Pd(111), and Rh(111) has been studied in detail by the density functional theory calculations. The calculated activation barriers were successfully correlated with the coupling matrix element V 2 ad and the d-band center (ε d ) for the group IB metals and group VIII metals, respectively. By comparison of the activation energy barriers of the methoxy decomposition on different metals, it was found that Pt is the best catalyst for methoxy decomposition. The possible reason why the metallic Pt is the best catalyst has been analyzed from both the energetic data and the electronic structure information, that is, methoxy decomposition on Pt(111) has the largest exothermic behavior due to the closest p-band center of the CH 3 O among all metals after the adsorption.Ruipeng Ren Cuiyu Niu Shaoyue Bu Yuhua Zhou Yongkang Lv Guichang Wang 2011Journal of Natural Gas Chemistry2011,20,1:0
13Microstructure Manipulation of Covalent Organic Frameworks(COFs)-based Membrane for Efficient Separations显示文摘Covalent organic framework(COF) membranes have exhibited great potential to become the next-generation membranes for efficient separations due to the diverse structures, ordered framework pores, tunable functionality and excellent stability. This review presents the microstructure manipulation strategies for separation performance enhancement of COF membranes in recent years. Based on the three mechanisms of molecular sieving, surface diffusion, and facilitated transport, the structural modulation methods to enhance the selectivity of COF membranes are analyzed in detail. Next, strategies of realizing ultrashort mass transfer pathways and ultralow mass transfer resistance for the permeability enhancement are elaborated. Furthermore, the framework stability in COFs, interlayer stability between COF nanosheets and interfacial stability between COF layer and substrate are discussed. Finally, we discuss the existing challenges and perspectives on the future development of COF membranes, targeting at identifying the most promising strategies and directions for the engineering of COF membranes.MA Hanze WANG Shaoyu REN Yanxiong LIANG Xu WANG Yuhan ZHU Ziting HE Guangwei JIANG Zhongyi 2022Chemical Research in Chinese Universities2022,38,2:0
14Modeling chunk-based content placement in information centric networking显示文摘Content-centric networking(CCN) proposes a content-centric paradigm which changes the waist hourglass from Internet protocol(IP) to content chunk. In this paper, based on content chunks, an optimization model of minimizing the total delay time in information centric networking(ICN) is established, and branch-and-bound method and greedy(BG) algorithm is proposed to get the content placement method. As the multipath is natural supported in CCN, chunk-based content placement can decline delay time obviously, even it would increase the calculation amount which can be solved easily by the node's capacity. Simulation results indicate that the chunk-based content placement scheme is better than the single-based cache policy on the network total delay time, and the best number of each content chunk split is decided by the link density and the number of the nodes in the network.Wang Guoqing Liu Jiang Li Xiuqin Yang Shaoyu Li Guojia 2017The Journal of China Universities of Posts and Telecommunications2017,24,3:0
15A Physical Layer Authentication Mechanism for IoT Devices显示文摘When Internet of Things(IoT)nodes access the network through wireless channels,the network is vulnerable to spoofing attacks and the Sybil attack.However,the connection of massive devices in IoT makes it difficult to manage and distribute keys,thus limiting the application of traditional high-level authentication schemes.Compared with the high-level authentication scheme,the physical layer authentication scheme realizes the lightweight authentication of users by comparing the wireless channel characteristics of adjacent packets.However,traditional physical layer authentication schemes still adopt the one-to-one authentication method,which will consume numerous network resources in the face of large-scale IoT node access authentication.In order to realize the secure access authentication of IoT nodes and regional intrusion detection with low resource consumption,we propose a physical layer authentication mechanism based on convolution neural network(CNN),which uses the deep characteristics of channel state information(CSI)to identify sending nodes in different locations.Specifically,we obtain the instantaneous CSI data of IoT sending nodes at different locations in the pre-set area,and then feed them into CNN for training to procure a model for IoT node authentication.With its powerful ability of data analysis and feature extraction,CNN can extract deep Spatio-temporal environment features of CSI data and bind them with node identities.Accordingly,an authentication mechanism which can distinguish the identity types of IoT nodes located in different positions is established to authenticate the identity of unknown nodes when they break into the pre-set area.Experimental results show that this authentication mechanism can still achieve 94.7%authentication accuracy in the case of a low signalto-noise ratio(SNR)of 0 dB,which means a significant improvement in authentication accuracy and robustness.Xinglu Li Kaizhi Huang Shaoyu Wang Xiaoming Xu 2022China Communications2022,19,5:0
16Vulnerability Curve of Ice Flashover Trips in Regional Grid and Its Appfication显示文摘SUN Yu WANG Xiuli WANG Jianxue WANG Xifan WU Xiong XIE Shaoyu 2012中国电机工程学报2012,32,22:0
17Visual Functions and TraceElement Metabolism in Tobacco-toxic Optic Neuropathy显示文摘Visual functions and nutrition metabolic characteristics werestudied in 8 subjects(16 eyes)with tobacco-toxic optic neuropathy(TTON).Their visual functions tested by psychophysical and electrophysiologicmethods showed that:1.central vision diminished in 16 eyes,2.dyschromatopsias were found in 14 tested eyes,3.bilateral symmetricalcentral or cecocentral scotomas were the visual field characteristics in allcases,4.PVEP were severe abnormal in 3 spatial frequencies in all cases and56.3% of 15' checkboard ...Yu Wang Lezheng Wu De-Zheng Wu Futian Jiang Taiqing Luo National Ophthalmological Laboratories,Ministry of Public Heallth,China Zhongshan Ophthalmic Center,Sun Yat-sen University of Medical Sciences,Guangzhou 510060,China Shaoyu Sheng Zengxi Li Yechen Liang Guangdong lnstitute of Analysis,100 Xianlie Road,Guangzhou 510070,China 1992眼科学报1992,8,3:0
18TinyDet:accurately detecting small objects within 1 GFLOPs显示文摘Dear editor,Object detection plays an important role in computer vision,and has gradually become the technical foundation of many applications. However, the inference procedure of advanced detection models requires massive computational resources,which makes it difficult to apply to resource-constrained mobile or edge devices.Shaoyu CHEN Tianheng CHENG Jiemin FANG Qian ZHANG Yuan LI Wenyu LIU Xinggang WANG 2023Science China(Information Sciences)2023,66,1:0
19Function-oriented design:A novel strategy for advanced biomedical materials显示文摘It has always been a dream to construct tissues and even organs for transplantation to replace those with defects caused by diseases or injuries.Tissue engineering is another milestone in the developmental history of life science after cellular and molecular bioscience.Nevertheless,despite decades of rapid de-velopment,tissue-engineered biomaterials have not been widely used clinically.Biomaterials constructed by physical and chemical methods have lots of difficulty in precisely mimicking the macroscopic and mi-croscopic structures of human tissues.The ultimate way to build organoid tissue for regeneration is to enable the cells to take the initiative and build suitable functions.Based on the thoughts of tissue engi-neering,organoid technology holds great potential as a research tool for a wide range of fields,including developmental biology,disease pathology,cell biology,precision medicine,and drug toxicity and efficacy testing.This technology also holds tremendous potential for regenerative medicine,as organoids present the possibility for autologous and allogeneic cell therapy through the replacement of damaged or dis-eased tissues with organoid-propagated tissue or stem cell populations.In this review work,we briefly outlook the development history of organoid technology,summarize the current bottlenecks and the un-derlying reasons,and propose the unified term“function-oriented design in tissue engineering”,a new topic that may provide a solution to overcome these bottlenecks.Zhiyu Zhou Wentao Wang Jianmin Wang Hongshui Wang Yi Xia Wei Zhang Yuxiao Lai Xiao Lin Yongcan Huang Xuenong Zou Martin J.Stoddart Zhen Li Wei Tian Shaoyu Liu Xinbao Wu Manman Gao Junhong Li Lei Yang Dafu Chen 2023Journal of Materials Science & Technology2023,,14:0
20Non-Isothermal Dissolutive Wetting of Al-Ni and Cu-Ni Alloy Nanodroplets on a Cu(100)Substrate显示文摘The kinetics of Al-Ni and Cu-Ni nanodroplets spreading over a Cu substrate in the presence of a temperature difference between them is studied via molecular dynamics simulations.The simulations show that significant dissolution reactions occur for the two systems and there is no precursor film generated during spreading.The spreading rate significantly increases when nanodroplets contain less Ni atoms in the Al-Ni/Cu wetting systems.However,a different trend is observed in the Cu-Ni/Cu wetting systems.The spreading rate remains unchanged regardless of the ratio of Cu to Ni atoms owing to the fact that Cu and Ni have almost the same lattice constants.The simulations also demonstrate that,because of the temperature gradient between the nanodroplet and substrate,local solidification takes place in the later spreading stage,which significantly hinders spreading.Due to the mismatch of lattice constants between Al and the Cu atoms in the Al-Ni/Cu wetting systems,hexagonal closest packed(hcp),body centered cubic(bcc),and face centered cubic(fcc)arrangements of atoms are observed when the Al-Ni nanodroplets solidify completely,whereas there is only a fcc arrangement in the Cu-Ni/Cu wetting systems.WANG Shaoyu WANG Zijie WANG Shuolin YANG Yanru HUANG Congliang WANG Xiaodong 2022Journal of Thermal Science2022,31,4:0
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