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16篇 您的检索式:作者名="Weixing Song"
    题名 作者 年代 出处 被引量
1Surface-defect passivation through complexation with organic molecules leads to enhanced power conversion efficiency and long term stability of perovskite photovoltaics显示文摘Organic-inorganic hybrid lead halide perovskites(e.g.,CH3NH3PbX3,X=Cl,Br,I)possess a unique combination of excellent electronic and photoelectrochemical properties including suitable and tunable bandgap,low exciton binding energy in the range of 9–80 meV,high extinction coefficient,and long electron and hole diffusion lengths[1],which make them excellent photovoltaic materials.Weixing Song Guozhong Cao 2020Science China Materials2020,63,3:4
2Monitoring traveling ionospheric disturbances using the GPS network around China during the geomagnetic storm on 28 May 2011显示文摘Larger-scale traveling ionospheric disturbances (LSTIDs) are studied using the total electron content (TEC) data observed from 246 GPS receivers in and around China during the medium storm on 28 May 2011. It is the first attempt to get the two-dimensional TEC perturbation maps in China. Two LSTID events are detected: one is in southwestern China before midnight propagating from low to middle latitude to the distance of about 1200 km with the phase front extending to about 500 km, and the other is in northeastern China after midnight propagating from middle to low latitudes to the distance of about 1200 km with the phase front extending to nearly 1400 km. By using the multichannel maximum-entropy method, we get the propagation parameters of these two LSTIDs. The LSTID that occurs before midnight has a higher horizontal phase velocity and a larger damping rate corresponding to the after midnight LSTID, and this may be caused by the relatively large vertical background TEC 0 and high atmospheric temperature in the southwest of China before midnight. According to the variations of magnetic H component observed in high latitudes, the source region for the after midnight LSTID is likely to be located 1400-2600 km east of 140°E and north of 42°N; the before midnight LSTID is propably excited by the atmospheric gravity waves (AGWs) generated by the Joule heating of the equatorial electrojet.SONG Qian DING Feng WAN WeiXing NING BaiQi ZHAO BiQiang 2013Science China Earth Sciences2013,56,5:2
3GPS detection of the coseismic ionospheric disturbances following the 12 May 2008 M7.9 Wenchuan earthquake in China显示文摘Here we report two cases of coseismic ionospheric disturbances observed through a GPS network in China after the great Wenchuan earthquake at 06:28 UT on 12 May,2008.One is detected 7.9 min after the earthquake and had an intensive'N'shape oscillated waveform with a pronounced amplitude of about 1 TECU,which propagates approximately southward to the distance about 1000 km with the horizontal phase velocity of 600±84 m/s and the period of 9.5±1.3 min.The other is detected8.5 min after the earthquake and has an oscillated waveform more like a positive pulse with an amplitude of about 0.5 TECU,which propagates eastward to the distance about 800 km with the horizontal phase velocity of 720±59 m/s and the period of7.4±0.8 min.These two coseismic ionospheric disturbances are caused by the acoustic gravity waves excited by partial transformation of the acoustic waves originated from the energy release of the earthquake,somewhere near the epicenter.The directional preferences of these two coseismic ionospheric disturbances may be associated with the oblique geomagnetic field lines and the background winds filtering effect.SONG Qian DING Feng YU Tao WAN WeiXing NING BaiQi LIU LiBo ZHAO BiQiang 2015Science China Earth Sciences2015,58,1:2
4A new approach to stability analysis of discrete-time recurrent neural networks with time-varying delay 显示文摘SONG Chunwei GAO Huijun ZHENG Weixing 2009Neurocomputing2009,72,1012:1
5Model checking in errors-in-variables regression显示文摘Song Weixing 2008Journal of Multivariate Analysis2008,99,10:1
6Estimation in Linear Regression with Laplace Measurement Error Using Tweedie-Type Formula显示文摘Based on a Tweedie-type formula developed under the Laplace distribution,this paper proposes a new bias-corrected estimator of the regression parameters in a simple linear model when the measurement error follows a Laplace distribution.Large sample properties,including the consistency and the asymptotic normality,are investigated.The finite sample performance of the proposed estimators are evaluated via simulation studies,as well as comparison studies with some existing estimation procedures.SHI Jianhong FENG Jing SONG Weixing 2019Journal of Systems Science & Complexity2019,32,4:1
7Parametric bootstrap simultaneous confidence intervals for differences of means from several two-parameter exponential distributions 显示文摘Juan Li Weixing Song Jianhong Shi 2015Statistics and Probability Letters2015,106,:1
8Improved estimation in multiple linear regression models with measurement error and general constraint显示文摘Hua Liang Weixing Song 0,,:1
9Serum amyloid A may potentiate prothrombotic and proinflammatory events in acute coronary syndromes显示文摘Changjie Song Ying Shen Eric Yamen Kenneth Hsu Weixing Yan Paul K. Witting Carolyn L. Geczy S. Ben Freedman 2008Atherosclerosis2008,,2:1
10A new approach to stability analysis of discrete-time recurrent neural networks with time-varying delay显示文摘SONG Cunwei GAO Huijun ZHENG Weixing 0,,:1
11ONE SIDE ASYMPTOTIC EFFICIENCY IN UNIFORM DISTRIBUTIONS显示文摘For the two side truncated distribution family: dPθ(x) = f(x;θ1θ2)I(θ≤ x≤θ2)dx, where θ=(θ1,θ2),θ < θ2,chen & Fu studied one side asymptotic efficiency of the estimator for parameter hation g(θ) = c1θ1 + C2θ2, they pointed out that when c1c2≥0, there exist one side asymptotic efficient estimators for g(θ); when c1c2 < 0, the estimator they proposed is not asymptotically efficient. Then they put forward a question: Is there any other asymptotically efficient estimator for g(θ) when c1c2 <0? In this paper, we study this problem, we prove that when the distribution under consideration is uniform distribution with location and scale parameters, there does not exist one side asymptotically efficient estimators for the scale parameter.SONG Weixing (Mathematics Department, Beijing Normal University, Beijing 100875, China) 2001Journal of Systems Science & Complexity2001,14,2:0
12Pathways toward wearable and high-performance sensors based on hydrogels:toughening networks and conductive networks显示文摘Wearable hydrogel sensors provide a user-friendly option for wearable electronics and align well with the existing manufacturing strategy for connecting and communicating with large numbers of Internet of Things devices.This is attributed to their components and structures,which exhibit exceptional adaptability,scalability,bio-compatibility,and self-healing properties,reminiscent of human skin.This review focuses on the recent research on principal structural elements of wearable hydrogels:toughening networks and conductive networks,highlighting the strategies for enhancing mechanical and electrical properties.Wearable hydrogel sensors are categorized for an extensive exploration of their composition,mechanism,and design approach.This review provides a comprehensive understanding of wearable hydrogels and offers guidance for the design of components and structures in order to develop high-performance wearable hydrogel sensors.Junbo Zhu Jingchen Tao Wei Yan Weixing Song 2023National Science Review2023,10,9:0
13Universal organic anodes enable safe low-cost aqueous rechargeable batteries with long cycle life,high capacity, and fast kinetics显示文摘Future battery advances and economies of scale will help scrub CO2emissions from transportation and the grid.Economical energy storage lets battery-powered electric vehicles replace internal combustion engines in the transportation sector,which now accounts for the plurality of CO2emissions.For grid-scale applications,the benefits of adding storage are many and well documented[1–2].Beyond increased penetration of intermittent renewable energy generated from such as solar panelsWeixing Song Guozhong Cao 2017Science China Materials2017,60,8:0
14Decision Analysis on IoV Routing Transmission and Energy Efficiency Optimization Algorithm with AmBC显示文摘The improvement of the quality and efficiency of vehicle wireless network data transmission is always a key concern in the Internet of Vehicles(IoV).Routing transmission solved the limitation of transmission distance to a certain extent.Traditional routing algorithm cannot adapt to complex traffic environment,resulting in low transmission efficiency.In order to improve the transmission success rate and quality of vehicle network routing transmission,make the routing algorithm more suitable for complex traffic environment,and reduce transmission power consumption to improve energy efficiency,a comprehensive optimized routing transmission algorithm is proposed.Based on the routing transmission algorithm,an optimization algorithmbased on road condition,vehicle status and network performance is proposed to improve the success rate of routing transmission in the IoV.Relative distance difference and density are used as decision-making indicators to measure Road Side Unit(RSU)assisted transmission.And the Ambient backscatter communication(AmBC)technology and energy collection are used to reduce the energy consumption of routing relay transmission.An energy collection optimization algorithm is proposed to optimize the energy efficiency of AmBC and improve the energy efficiency of transmission.Simulation results show that the proposed routing optimization algorithm can effectively improve the success rate of packet transmission in vehicular ad hoc networks(VANETs),and theAmBC optimization algorithmcan effectively reduce energy consumption in the transmission process.The proposed optimization algorithm achieves comprehensive optimization of routing transmission performance and energy efficiency.Baofeng Ji Mingkun Zhang Weixing Wang Song Chen 2023Computer Modeling in Engineering & Sciences2023,137,12:0
15Primary Investigation of Diseases and Pests on Oil Camellia (Camellia oleifera Abel) in Guangxi Province of China and Suggestions for Prevention and Control显示文摘The occurrence condition of pests and diseases in major production areas of oil camellia(Camellia oleifera Abel)in Guangxi Province of China was preliminarily investigated from 2010 to 2012.The investigation results showed that there were seven species of major pests on oil camellia in Guangxi Province,including six species of leaf pests,one species of branch pest and one species of fruit pest;there were seven species of major diseases on oil camellia.It was the first report that Mytilaspis camelliae(Hoke)and Empoasca pivisuga Matumura could damage C.oleifera.The occurrence status of pests and diseases on oil camellia in Guangxi Province was summarized,and suggestions for prevention and control against pests and diseases were also put forward.Deng Xiaojun Tang Jian Qin Qiyun Qin Zuoyu Yan Quan Yang Weixing Deng Yan Song Xianchong He Yinghui 2013Plant Diseases and Pests2013,4,6:0
16Effects of collagen fiber addition on the combustion and thermal stability of natural rubber显示文摘Collagen fiber(CF)and silane coupling agent-modified collagen fiber(MCF)were used as flame retardant filler for natural rubber(NR)modification.The combustion phenomena and properties of composites blended with different dosages of CF or MCF were compared to elucidate the flame retardant mechanism of the composites.The flame retardancy of NR can be enhanced effectively by increasing nitrogen content(the nitrogen content of CF is about 18%),creating air pockets,and structuring the flame retardant network in the composites.MCF failed to structure a flame retardant network in the composite,indicating that its modification effects of MCF are weaker than those of CF.When CF dosage was 30 wt%,the composite can achieve the best flame retardancy,with limited oxygen index of 29.4% and without smoke and dripping during burning.This study demonstrated a new method for the flame retardant modification of NR.Weixing Xu Xintao Wu Qilin Wen Shuangyang Li Yongjiao Song Bi Shi 2020Journal of Leather Science and Engineering2020,2,1:0
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