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39篇 您的检索式:作者名="Zhanxin"
    题名 作者 年代 出处 被引量
1Unscented Kalman filter for SINS alignment显示文摘In order to improve the filter accuracy for the nonlinear error model of strapdown inertial navigation system (SINS) alignment, Unscented Kalman Filter (UKF) is presented for simulation with stationary base and moving base of SINS alignment. Simulation results show the superior performance of this approach when compared with classical suboptimal techniques such as extended Kalman filter in eases of large initial misalignment. The UKF has good performance in case of small initial misalignment.Zhou Zhanxin Gao Yanan Chen Jiabin 2007Journal of Systems Engineering and Electronics2007,18,2:14
2Fuzzy data envelopment analysis approach based on sample decision making units显示文摘The conventional data envelopment analysis(DEA) measures the relative efficiencies of a set of decision making units with exact values of inputs and outputs.In real-world problems,however,inputs and outputs typically have some levels of fuzziness.To analyze a decision making unit(DMU) with fuzzy input/output data,previous studies provided the fuzzy DEA model and proposed an associated evaluating approach.Nonetheless,numerous deficiencies must still be improved,including the αcut approaches,types of fuzzy numbers,and ranking techniques.Moreover,a fuzzy sample DMU still cannot be evaluated for the Fuzzy DEA model.Therefore,this paper proposes a fuzzy DEA model based on sample decision making unit(FSDEA).Five evaluation approaches and the related algorithm and ranking methods are provided to test the fuzzy sample DMU of the FSDEA model.A numerical experiment is used to demonstrate and compare the results with those obtained using alternative approaches.Muren Zhanxin Ma Wei Cui 2012Journal of Systems Engineering and Electronics2012,23,3:11
3Controlled synthesis of single cobalt atom catalysts via a facile one-pot pyrolysis for efficient oxygen reduction and hydrogen evolution reactions显示文摘Metal-nitrogen doped carbon catalysts(M-N/C) with abundantly accessible M-Nxsites, particularly single metal atom M-N/C(SAM-N/C), have been developed as a substitute for expensive Pt-based catalysts.These catalysts are used to increase the efficiency of otherwise sluggish oxygen reduction reactions(ORR) and hydrogen evolution reactions(HER). However, although the agglomerated metal nanoparticles are usually easy to form, they are very difficult to remove due to the protective surface-coating carbon layers, a factor that significantly hampers SAM-N/C fabrication. Herein, we report a one-step pyrolysis approach to successfully fabricate single cobalt atom Co-N/C(SACo-N/C) by using a Co2+-SCN-coordination compound as the metal precursor. Thanks to the decomposition of Co2+-SCN-compound at lower temperature than that of carbon layer deposition, Co-rich particles grow up to larger ones before carbon layers formation. Even though encapsulated by the carbon layers, it is difficult for the large Co-rich particle to be completely sealed. And thus, it makes the Co atoms possible to escape from incomplete carbon layer, to coordinate with nitrogen atoms, and to form SACo-N/C catalysts. This SACo-N/C exhibits excellent performances for both ORR(half-wave potential of 0.878 V) and HER(overpotential at 10 mA/cm2 of178 m V), and is thus a potential replacement for Pt-based catalysts. When SACo-N/C is integrated into a Zn-O2 battery, battery with high open-circuit voltage(1.536 V) has high peak power density(266 mW/cm2)and large gravimetric energy density(755 mA h/gZn) at current densities of 100 mA/cm2. Thus, we believe that this strategy may offer a new direction for the effective generation of SAM-N/C catalysts.Yao Wang Linhui Chen Zhanxin Mao Lishan Peng Rui Xiang Xianyi Tang Jianghai Deng Zidong Wei Qiang Liao 2019Science Bulletin2019,64,15:10
4High-performance microwave absorption enabled by Co_(3)O_(4) modified VB-group laminated VS_(2) with frequency modulation from S-band to Ku-band显示文摘High performance microwave absorption(MA)materials especially those with tunable frequency are highly desirable for telecommunication industries and military camouflage in the information era.Herein,we constructed hierarchical heterostructures based on VB-group laminated vanadium disulfide(VS_(2))nanosheets embedded with cobalt tetroxide(Co_(3)O_(4))nanoparticles.The highly dispersed Co_(3)O_(4)nanoparticles generate strong electromagnetic coupling networks that could enhance the loss properties of MA materials.Moreover,the interconnected VS_(2)layered network results in dipolar/interfacial polarization,multiple reflection and scattering favorable for the enhanced MA performance.Impressively,the maximum reflection loss of the VS_(2)/Co_(3)O_(4)hybrids containing 10%Co_(3)O_(4)can reach 57.96 dB at a thin thickness of 1.57 mm,and the bandwidth with an RL value less than-10 dB is as large as 3.5 GHz.The effective MA band could be adjusted in a range of 15.1 GHz(2.9-18 GHz)from S to Ku bands by the increase in thickness from 1.2 mm to 5.5 mm.The results show that the synergistic effect of multiple loss mechanisms and good impedance matching could be the reasons for strong MA capability in nearly all frequency bands,and thus,the high-performance and lightweight MA materials could be developed by the VS_(2)/Co_(3)O_(4)hybrids.Zehao Huang Junye Cheng Huibin Zhang Yingfei Xiong Zhanxin Zhou Qingbin Zheng Guangping Zheng Deqing Zhang Maosheng Cao 2022Journal of Materials Science & Technology2022,,12:6
5Transjugular intrahepatic portosystemic shunt for portal vein thrombosis with symptomatic portal hypertension in liver cirrhosis显示文摘Guohong Han Xingshun Qi Chuangye He Zhanxin Yin Jianhong Wang Jielai Xia Zhiping Yang Ming Bai Xiangjie Meng Jing Niu Kaichun Wu Daiming Fan 2010Journal of Hepatology2010,,:5
6Cooperation and Competition Strategy Analysis of Decision-Making Units Based on Efficiency Game显示文摘Data envelopment analysis(DEA)method based on game theory effectively ranks the decisionmaking units(DMUs)by the view of cooperation or competition.The DEA method based on partial ordered set theory depicts the relationships among DMUs.However,these methods are unable to reveal the complex cooperation and competition relationships among DMUs.In this paper,an optimal model for DMU group game strategy is proposed based on the generalized DEA method and game theory.According to this model,we can effectively depict the efficiency change of DMUs.Moreover,the effect of various game relationships on individual and the union of DMUs can be characterized.It is of positive significance for decision makers to find partners and moderate the cooperation and competition situation of their competitors.Finally,the cooperation and competition relationships of 9 express enterprises in a certain area in China are analyzed by using the method proposed in this paper.Li Cao Zhanxin Ma Muren 2020Journal of Systems Science and Systems Engineering2020,29,2:4
7A Novel Training Sequence Applied to DCS-Based Channel Estimation显示文摘Studies have indicated that the distributed compressed sensing based(DCSbased) channel estimation can decrease the length of the reference signals effectively. In block transmission, a unique word(UW) can be used as a cyclic prefix and reference signal. However, the DCS-based channel estimation requires diversity sequences instead of UW. In this paper, we proposed a novel method that employs a training sequence(TS) whose duration time is slightly longer than the maximum delay spread time. Based on proposed TS, the DCS approach perform perfectly in multipath channel estimation. Meanwhile, a cyclic prefix construct could be formed, which reduces the complexity of the frequency domain equalization(FDE) directly. Simulation results demonstrate that, by using the method of simultaneous orthogonal matching pursuit(SOMP), the required channel overhead has been reduced thanks to the proposed TS.Weizhang Xu Xinle Yu Yanfei Li Lu Si Zhanxin Yang 2018China Communications2018,15,11:2
8Structural character- ization and isolation of lignin and hemicelluloses from barley straw显示文摘Xiao Feng Sun Zhanxin Jing paul Folwer 0,,03:1
9Marketization and income distribution in urban China, 1988 and 1995显示文摘Yanjie Bian Zhanxin Zhang 2002Research in Social Stratification and Mobility2002,,:1
10Structural characterization and isolation of lignin andhemicelluloses from barley straw 显示文摘SUN Xiaofeng JING Zhanxin FOWLER P 2011Industrial Cropsand Products2011,33,3:1
11Prevalence of paroxysmal nocturnal hemoglobinuria in C hinese patients with B udd‐ C hiari syndrome or portal vein thrombosis显示文摘Xingshun Qi Chuangye He Guohong Han Zhanxin Yin Feifei Wu Qing Zhang Jing Niu Kaichun Wu Daiming Fan 2012J Gastroenterol Hepatol2012,,1:1
12Research on Non-equilibrium of Economic De-velopment among Leagues and Cities of Inner Mongolia显示文摘Ma Shengyun Ma Zhanxin 2009Proceedings of2009International Conference on Management Science and Engineering2009,,:1
13Effect of Different Ionic Liquids on 5-Hydroxymethylfurfural Preparation from Glucose in DMA over AlCl_(3):Experimental and Theoretical Study显示文摘In this work,effect of different ionic liquids(ILs)on 5-hydroxymethylfurfural(HMF)preparation from glucose in N,N-dimethylacetamide(DMA)over AlCl3 was revealed by a combined experimental and computational study.ILs used as cocatalysts in this work included N-methyl-2-pyrrolidone hydrogen sulfate([NMP]HSO_(4)),N-methyl-2-pyrrolidone methyl sulfate([NMP]CH_(3)SO_(3)),N-methyl-2-pyrrolidone chlorine([NMP]Cl)and N-methyl-2-pyrrolidone bromide([NMP]Br)which were endowed with the same cation but different anions.According to the conclusion that fructose was intermediate product from glucose to HMF,we found fructose was transformed to more by-products by[NMP]H_(S)O_(4),making HMF yield decline significantly when glucose was treated as substrate.Neither glucose nor fructose could be converted by[NMP]CH_(3)SO_(3)efficiently,leading to its no influence on glucose conversion to HMF.[NMP]Br had a higher selectivity for HMF from fructose than[NMP]Cl and AlCl3.Besides,Al^(3+)preferred to combine with Br−,slightly decreasing both the overall free energy barrier for glucose isomerization and activation barrier for H-shift at 393.15 K.So a high HMF yield of 57%was obtained from glucose catalyzed by AlCl3 together with[NMP]Br under mild conditions.Yan Yang Wentao Liu Ningning Wang Haijun Wang Wei Li Zhanxin Song 2015Chinese Journal of Chemistry2015,33,5:1
14Transjugular Intrahepatic Portosystemic Shunt for Portal Cavernoma with Symptomatic Portal Hypertension in Non-cirrhotic Patients显示文摘Xingshun Qi Guohong Han Zhanxin Yin Chuangye He Jianhong Wang Wengang Guo Jing Niu Wei Zhang Ming Bai Daiming Fan 2012Digestive Diseases and Sciences2012,,4:1
15Remov- al of low concentration Cr ( Ⅵ ) from aqueous solution by modified wheat straw显示文摘Sun Xiaofeng Jing Zhanxin Wang Haihong 2013Journal of Applied Polymer Sci- ence2013,129,3:1
16Transarterial Chemoembolization for the Treatment of Advanced Hepatocellular Carcinoma with Portal Vein Tumor Thrombosis: Prognostic Factors in a Single-Center Study of 188 Patients显示文摘Lei Liu Cheng Zhang Yan Zhao Xingshun Qi Hui Chen Wei Bai Chuangye He Wengang Guo Zhanxin Yin Daiming Fan Guohong Han Qing He 2014BioMed Research International2014,,:1
17Re- search on Models of the Data Envelopment Analysis 显示文摘Hou Xiang Ma Zhanxin Zhao Chunying 2010Journal of Inner Mongolia University2010,41,05:1
18Computa-tion of 3D magnetic leakage field and stray losses in largepower transformer 显示文摘Zhanxin Zhu Dexin Xie Gang Wang 2012IEEE Transactions on Magnetics2012,48,2:1
19Marketization And Income Distribution In Urban China 1988 And 1995显示文摘Bian Yanjie and Zhang Zhanxin 2002The FutUre of Market Transition2002,,19:1
20The winners in China's urban housing reform显示文摘Logan J R Fang Yiping Zhang Zhanxin 2010Housing Studies2010,25,1:1
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