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    题名 作者 年代 出处 被引量
1Information flow and controlling in regularization inversion of quantitative remote sensing显示文摘In order to minimize uncertainty of the inversed parameters to the largest extent by making full use of the limited information in remote sensing data, it is necessary to understand what the information flow in quantitative remote sensing model inversion is, thus control the information flow. Aiming at this, the paper takes the linear kernel-driven model inversion as an example. At first, the information flow in different inversion methods is calculated and analyzed, then the effect of information flow controlled by multi-stage inversion strategy is studied, finally, an information matrix based on USM is defined to control information flow in inversion. It shows that using Shannon entropy decrease of the inversed parameters can express information flow more properly. Changing the weight of a priori knowledge in inversion or fixing parameters and partitioning datasets in multi-stage inversion strategy can control information flow. In regularization inversion of remote sensing, information matrix based on USM may be a better tool for quantitatively controlling information flow.YANG Hua, XU Wangli, ZHAO Hongrui, CHEN Xue & WANG Jindi Research Center for Remote Sensing and GIS, School of Geography, Beijing Normal University, State Key Laboratory of Remote Sensing Science, Beijing Key Laboratory for Remote Sensing of Environment and Digital Cities, Beijing 100875, China Department of Mathematics, Beijing Normal University, Beijing 100875, China 2005Science China Earth Sciences2005,48,1:12
2Characterization of fine organic particulate matter from Chinese cooking显示文摘PM 2.5 samples were collected by a three-stage cascade impactor at two kinds of Chinese restaurants to characterize fine organic particulate matter from Chinese cooking sources. Major individual organic compounds have been quantified by GC/MS, including series of alkanes, n-alkanoic acids, n-alkanals, alkan-2-ones and PAHs. Alkanes and ketones make up a significant fraction of particle-phase organic compounds, ranging from C 11 to C 26, and C 9 to C 19, respectively. In addition, other organic compound classes have been identified, such as alkanols, esters, furans, lactones, amides, and nitriles. The mass concentrations of fine particles, alkanes, n-alkanoic acids and PAHs in air emitted from the Uigur style cooking are hundreds times higher than ambient PM 2.5in Beijing.HELing-yan HUMin WANGLi HUANGXiao-feng ZHANGYuan-hang 2004Journal of Environmental Sciences2004,16,4:11
3Secure Impulsive Synchronization in Lipschitz-Type Multi-Agent Systems Subject to Deception Attacks显示文摘Cyber attacks pose severe threats on synchronization of multi-agent systems.Deception attack,as a typical type of cyber attack,can bypass the surveillance of the attack detection mechanism silently,resulting in a heavy loss.Therefore,the problem of mean-square bounded synchronization in multi-agent systems subject to deception attacks is investigated in this paper.The control signals can be replaced with false data from controllerto-actuator channels or the controller.The success of the attack is measured through a stochastic variable.A distributed impulsive controller using a pinning strategy is redesigned,which ensures that mean-square bounded synchronization is achieved in the presence of deception attacks.Some sufficient conditions are derived,in which upper bounds of the synchronization error are given.Finally,two numerical simulations with symmetric and asymmetric network topologies are given to illustrate the theoretical results.Wangli He Zekun Mo Qing-Long Han Feng Qian 2020IEEE/CAA Journal of Automatica Sinica2020,7,5:10
4Varying coefficient analysis for indeterminate species interactions with non-parametric estimation, exemplifying with a fig-fig wasp system显示文摘Research on species interactions has generally assumed that species have a fixed interaction and therefore linear or non-linear parametric regression models (e.g. exponential, logistic) have been widely used to describe the species interaction. However, these models that describe the relationship between interacting species as a specific functional response might not be appropriate for real biological communities, for instance, in a chaotic system, when the species relationship varies among different situations. To allow a more accurate description of the relationship, we developed a species correlation model with varying coefficient analysis, in which a non-parametric estimation is applied to identify, as a function of related factors, variation in the correlation coefficient. This was applied to a fig-fig wasp model system. When the effect of the factors on the relationship can be described with parameters, the new method reduces to traditional parametric correlation analysis. In this way, the new method is more general and flexible for empirical data analyses, but different by allowing investigation of whether a species interaction varies with respect to factors, and of the factors that maintain or change the species interaction. This method will have important applications in both theoretical and applied research (e.g. epidemiology, community management).SHI Lei WANG RuiWu ZHU LiXing ZEN WeiMing XU WangLi ZHENG Qi 2011Chinese Science Bulletin2011,56,24:9
5RESIDENTS' ATTITUDES TO TOURISM DEVELOPMENT IN ANCIENT VILLAGE RESORTS——Case Study of World Cultural Heritage of Xidi and Hong Villages显示文摘Tourism development surely has social, economic and environmental impacts on tourist destinations.The study on resorts residents' attitudes can help understand the nature of tourism development and the extent to which it may influence on tourist destinations. By now, researches on residents' perception and attitudes are plenteous in the international circle and achievements are great, yet few are found in developing countries. As a most representative cultural tourist destination, World Cultural Heritage-Xidi and Hong villages in Yi County of Anhui Province, are drawing the attention of both tourists and academic circles. This article, taking Xidi and Hong villages as examples, seeks to analyze ancient village residents' attitudes towards tourism impacts and then tries further to explore the connection between tourism development and residents' attitudes. Both qualitative and quantitative surveys are applied in the exploratory investigation into local residents' attitudes of tourism impacts. Based on abundant face-to-face interviews with the local households, tourism enterprises concerned, local government and tourists from July to August of 2002, we are able to have a better understanding of local residents' attitudes to community life, and perception of tourism impacts on society, economy and environment. By this we can promote domestic study on resorts residents' attitudes, and provide some theoretical grounds for establishing tourism development planning and perfect community participation system at tourist destinations.WANGLi TONGShi-rong LUSong YANGZhao WANGYong LIANGDong-dong 2004Chinese Geographical Science2004,14,2:8
6Pollution characteristics of the rivers in suburban Shanghai显示文摘Forty middle and small rivers in three towns of Fengjing, Songjiang and Zhujiajiao of suburban Shanghai were chosen as sampling sites for water quality research. Measurement results of DO, CODCr, TP, TN and so on show that the rivers are under heavy eutropic conditions, which are several times greater than the critical values of the worst level (Type V) of water. Water pollution situation has different temporal and spatial characteristics. Non-point pollution, such as village domestic sewage, farmland runoff, livestock feces, has become the primary source of pollution of the middle and small rivers in suburban Shanghai.YAOChunxia CHENZhenlou XUShiyuan LILing WANGLi LINShanshan 2005Journal of Geographical Sciences2005,15,1:7
7Effect of High Voltage Electrostatic Fields on Post-Harvest Quality of Strawberry Fruit显示文摘The paper studied the effect of high-voltage electrostatic fields on the postharvest quality of strawberries. The results showed that the respiration rate decreased significantly, the content of soluble solids kept at high level, and the activities of polygalacturonase and cx-cellulase decreased, while the fruit firmness declined slowly. On the seventh day of storage, the rotten rate of strawberries treated by HVEF was 5%, the control group was 15%.WANGJie LILi-te YEQing WANGLi 2005Agricultural Sciences in China2005,4,4:7
8Synthesis of trans-bis(glycin- ato) copper(II) complex nanorods by room tempera- ture solid-state reaction显示文摘Trans-[Cu(glyo)2(H2O)] nanoparticles with average diameters about 20—30 nm were prepared by one- step room temperature solid-state reaction. Trans-[Cu(glyo)2] nanorods with diameters ranging from 100 to 150 nm and lengths up to several ìm were also prepared by one-step room temperature solid-state reaction in the presence of a suitable nonionic surfactant PEG400. The chemical composi- tion and structural features of the products were investigated by elemental analyses, XRD, TG, SEM and TEM, respec- tively. The mechanisms of formation were also discussed.WANGLi LIULang JIADianzeng CAOYali XINXinquan 2005Chinese Science Bulletin2005,50,8:5
9Recommending Friends Instantly in Location-based Mobile Social Networks显示文摘Differently from the general online social network(OSN),locationbased mobile social network(LMSN),which seamlessly integrates mobile computing and social computing technologies,has unique characteristics of temporal,spatial and social correlation.Recommending friends instantly based on current location of users in the real world has become increasingly popular in LMSN.However,the existing friend recommendation methods based on topological structures of a social network or non-topological information such as similar user profiles cannot well address the instant making friends in the real world.In this article,we analyze users' check-in behavior in a real LMSN site named Gowalla.According to this analysis,we present an approach of recommending friends instantly for LMSN users by considering the real-time physical location proximity,offline behavior similarity and friendship network information in the virtual community simultaneously.This approach effectively bridges the gap between the offline behavior of users in the real world and online friendship network information in the virtual community.Finally,we use the real user check-in dataset of Gowalla to verify the effectiveness of our approach.QIAO Xiuquan SU Jianchong ZHANG Jinsong XU Wangli WU Budan XUE Sida CHEN Junliang 2014China Communications2014,11,2:4
10Research Progress on Production of Podophyllotoxin from Sinopodophyllum hexandrum显示文摘Podophyllotoxin is isolated mainly from the rhizomes of Podophyllum plants, and serves as the main precursor for synthesis of anticancer drugs, such as VP-16 and VM-26. VP-16 and VM-26 are used for curing lung cancer, testicular cancer, neuroblastoma, hepatoma and other tumors. However, these plants are all near-extinction species due to over-collection and their own biological characteristics. The chemical synthesis of podophyllotoxin is so complicated that its price is unbelievably high. This paper discusses the current status of the biosynthetic pathway of podophyllotoxin and that of the podophyllotoxin production using several biotechnological approaches such as plant organ cultures, plant cell cultures with both flasks and bioreactors, hairy root cultures, bioconversions and metabolic regulations.LiuHaijun XuYan SuGuoqing LiChunyan WangLi LiuYujun 2004Forestry Studies in China2004,6,1:3
11Synthesis, Electrocatalytic Properties and Crystal Structure of a New Organic-inorganic Hybrid Constructed from Dodecamolybdophosphoric Acid and Benzotriazole显示文摘A new compound, (C 6H 6N 3) 7(PMo Ⅵ 12 O 40 )(PMo ⅤMo Ⅵ 11 O 40 )·2CH 3CH 2OH·5H 2O, was synthesized and characterized by means of elemental analyses, IR spectroscopy, 1H NMR spectroscopy and single crystal \{X ray\} diffraction. This is the first example of benzotriazole polyoxometalates species. The compound crystallized in a triclinic space group P 1 with a =1 8378(4) nm, b =1 9078(4) nm, c =2 1037 (4) nm, α =\{63 41(3)°\}, β =64 31(3)°, γ =68 38(3)°, V =5 803(2) nm 3, Z =2, R 1=0 0486, wR 2=0 1357. The X ray crystallographic study showed that the crystal structure was constructed by electrostatic interactions and hydrogen bonds between dodecamolybdophosphorate anions and protonated benzotriazole cations. The electrochemical behavior and the reduction of nitrite and hydrogen peroxide electrocatalyzed by the title compound were studied.HANZheng-bo WANGXiu-li WANGLi WANGEn-bo LUANGuo-you HUNing-hai JIAHeng-qing 2003Chemical Research in Chinese Universities2003,19,2:3
12Intercalation of PM-19 into and in vitro Release of Anti-tumor Drug from Layered Double Hydroxide显示文摘WANGZhong-liang WANGEn-bo TIANShang-yi XIAODong-rong GAOLei WANGLi XULin 2005Chemical Research in Chinese Universities2005,21,4:2
13Effects of Hypobaric Storage on Physiological and Biochemical Changes in Postharvest Dong Jujube Fruit During Cold Storage显示文摘Effects of hypobaric storage on physiological and biochemical changes in Dong jujube fruit were investigated.Hypobaric storage significantly delayed the decrease in firmness and maintained content of ascorbic acid,reduced accumulation of ethanol and acetaldehyde in pulp and respiration,inhibited activities of ascorbic acid oxidase and alcohol dehydrogenase and slowed down the rate of ethylene production,but had little effect on flesh browning of the fruit.XUEMeng-lin ZHANGPing ZHANGJi-shu WANGLi 2003Agricultural Sciences in China2003,2,4:2
14Numerical Analysis of Linewidth of Optical Parametric Oscillators on CsLiB_6O_(10)显示文摘In this paper, a detailed computer-based numerical simulation centering on the export linewidth of diverse physical mechanisms of optic parametric oscillator by using a kind of new nonlinear optical crystal-CsLiB 6O 10(CLBO) pumped by 355?nm pulse laser is presented. The results point out that the linewidth is influenced by the divergence angle and off-axis of pumping larger than that other factors do.SONGChun-rong SUNHao WANGLi WANGWei-min 2004The Journal of China Universities of Posts and Telecommunications2004,11,3:2
15NONLINEAR FILTER METHOD OF GPS DYNAMIC POSITIONING BASED ON BANCROFT ALGORITHM显示文摘Because of the ignored items after linearization, the extended Kalman filter (EKF) becomes a form of suboptimal gradient descent algorithm. The emanative tendency exists in GPS solution when the filter equations are ill-posed. The deviation in the estimation cannot be avoided. Furthermore, the true solution may be lost in pseudorange positioning because the linearized pseudorange equations are partial solutions. To solve the above problems in GPS dynamic positioning by using EKF, a closed-form Kalman filter method called the two-stage algorithm is presented for the nonlinear algebraic solution of GPS dynamic positioning based on the global nonlinear least squares closed algorithm--Bancroft numerical algorithm of American. The method separates the spatial parts from temporal parts during processing the GPS filter problems, and solves the nonlinear GPS dynamic positioning, thus getting stable and reliable dynamic positioning solutions.ZHANGQin TAOBen-zao ZHAOChao-ying WANGLi 2005Transactions of Nanjing University of Aeronautics and Astronautics2005,22,2:2
16PlasmaelectrolyticoxidationcoatingsinKOH electrolyteanditsdischargecharacteristics显示文摘WangLi FuWen WangShiqin etal 2014JournalofAlloysandCompounds2014,594,5:1
17显示文摘WANGLi ZHANGLi KANGWen-yi etal(王丽 张丽 康文艺 等) 2009食品工业科技2009,30,4:1
18显示文摘董博(DongB) 闰熙博(YanXB) 牛玉洁(NiuYJ) 王欣(WangX) 王连永(WangLY) 王燕铭(WangYM) 化学进展0,,:1
19Adaptive synchronization of a class of chaotic neural networks with known or unknown parame-ters显示文摘HE Wangli CAO Jinde 2008Physics Letters A2008,372,4:1
20Level Ⅶ is an important component of central neck dissection for papillary thyroid cancer显示文摘WangLY VersnickMA GillAG 2013Ann Surg Oncol2013,20,22:1
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