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Modified unscented particle filter for nonlinear Bayesian tracking

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Journal of Systems Engineering and Electronics 2008年第1期19卷 7-14页

作者： Zhan Ronghui xin qin Wan Jianwei School of Electronic Science and Engineering National Univ. of Defense Technology. Changsha 410073 P. R. China

A modified unscented particle filtering scheme for nonlinear tracking is proposed, in view of the potential drawbacks （such as, particle impoverishment and numerical sensitivity in calculating the prior） of the conventional unscented particle filter （UPF） confronted in practice. Specifically, a different derivation of the importance weight is presented in detail. The proposed method can avoid the calculation of the prior and reduce the effects of the impoverishment problem caused by sampling from the proposal distribution, Simulations have been performed using two illustrative examples and results have been provided to demonstrate the validity of the modified UPF as well as its improved performance over the conventional one.

关键词： Bayesian estimation modified unscented particle filter nonlinear filtering unscented Kalman filter

Responses to the comments of Prof. Frederic Meunier

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Chinese Journal of Catalysis 2019年第1期40卷 1-3页

作者： Jiaxu Liu qin xin Hongchen Guo Department of Catalytic Chemistry and Engineering & State Key Laboratory of Fine Chemicals Dalian University of Technology State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences

Thanks for your straightforward comments and constructive suggestions on our recent study on dual‐beam FT‐IR spectroscopy published in ***.,2017,38,13?*** are glad to reply your questions and to give some supplementary remarks concerning the dual beam FT‐IR spectrometer,its usage and application *** first question you posed is about the nature of the feed gas flow regime in sample cell(e.g.,plug flow or CSTR‐like).You worry about a non‐CSTR flow regime in the sample cell of our dual beam IR‐cell reactor,which will result in difference in the gas composition of sample cell and reference cell,and consequently an imperfect gas‐phase correction.

关键词： Responses to the comments of Prof IR Frederic Meunier

Study of Sound Environment Influenced by the Crowd in Waiting Areas in General Hospitals

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Journal of Harbin Institute of Technology(New Series) 2014年第4期21卷 55-61页

作者： xin qin Jian Kang Hong Jin School of Architecture and Civil Engineering Heilongjiang University of Science and Technology School of Architecture Harbin Institute of Technology

In this study,the crowd has been investigated and analyzed in waiting areas in large general hospitals in China in order to find the rules the variations of sound environment with the change of crowd. The field investigation,questionnaire,field-testing and computer simulation have been adopted. The results show that: the social /demographic characteristics of staff and patients are not significantly related to the satisfaction evaluation of sound environment; there is a significant correlation between the population density and LAeq of the background noise in waiting areas; when population density is 0,the LAeq of background noise is not 0 in waiting areas; the loudspeaker should be set in the waiting areas. Loudspeaker arrangements should be integrated into the ceiling lamp or construct facilities along the depth direction of the layout,and the two adjacent speakers recommended distance should be controlled at about 4 m. If the population density is controlled in the reasonable range,and sound absorption,noise reduction processing and electronic queuing system are adopted,sound environment of waiting areas will be built with noise interference relatively small in different population densities.

关键词： general hospital waiting areas sound environment crowd

Numerical Dynamics of Coupled System of J-JType

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Communications in Nonlinear Science and Numerical Simulation 1997年第3期2卷 3-5页

作者： Wen xin qin (Department of Mathematics, Suzhou University) Department of Mathematics Suzhou University USA

ＮｕｍｅｒｉｃａｌＤｙｎａｍｉｃｓｏｆＣｏｕｐｌｅｄＳｙｓｔｅｍｏｆＪＪＴｙｐｅＷｅｎＸｉｎＱＩＮ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＳｕｚｈｏｕＵｎｉｖｅｒｓｉｔｙ）Ａｂｓｔｒａｃｔ：Ｉｎｔｈｉｓ... 详细信息

ＮｕｍｅｒｉｃａｌＤｙｎａｍｉｃｓｏｆＣｏｕｐｌｅｄＳｙｓｔｅｍｏｆＪＪＴｙｐｅＷｅｎＸｉｎＱＩＮ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＳｕｚｈｏｕＵｎｉｖｅｒｓｉｔｙ）Ａｂｓｔｒａｃｔ：Ｉｎｔｈｉｓｐａｐｅｒｗｅｃｏｎｓｉｄｅｒｔｈ...

关键词： Coupled System of J J Type Global Attractor Numerical Dynamics Approximation

Two Notes on Auto morphisms of Modules over a PID

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Algebra Colloquium 2019年第3期26卷 401-410页

作者： Heguo Liu Xiaoliang Luo xin qin Bomin Zan School of Mathematics and Statistics Hubei UniversityWuhan 430062China

Let Z>be a principal ideal domain(PID)and M be a module over *** prove the following two dual results:(i)If M is finitely generated and rr,y are two elements in M such that M/Dx≌M/Dy,then there exists an auto morphism a of M such that a(x)=y.(ii)If M satisfies the minimal cond计ion on submodules and X,Y are two locally cyclic submodules of M such that M/X≌M/Y and X≌Y,then there exists an automorphism a of M such that α(X)=Y.

关键词： auto morphism of modules finitely generated module module with minimumcondition on submodules

Highly efficient and stable CuZr-based metallic glassy catalysts for azo dye degradation

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Journal of Materials Science & Technology 2020年第11期42卷 88-97页

作者： Bowen Zhao Zhengwang Zhu xin Dong qin Zhengkun Li Haifeng Zhang Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China Institute of Rare and Scattered Elements College of ChemistryLiaoning UniversityShenyang110036China

Metallic glasses with the unique disordered atomic structure and metastable nature have been recently applied to degrade the azo dyes and other organic pollutants based on their superior catalytic *** this work,the functional properties of six Cu Zr-based metallic glassy ribbons with the different nominal components in degrading Acid OrangeⅡ(AOⅡ)azo dyes were *** Cu47.5Zr46Al6.5 metallic glassy ribbons could exhibit the more advanced catalytic performance for degradation process,which could completely degrade azo dye aqueous solution within 30 ***,the Cu47.5Zr46Al6.5 metallic glassy ribbons also showed the excellent cyclic stability along with approximately 97.68%degradation efficiency after 10 *** excellent catalytic performance and stability are closely related to the synergistic effect of exposed copper nanoparticles and produced copper oxides in the reaction,which contributes to accelerate the generation of more hydroxyl radicals(·OH)to react with dye *** findings can be able to develop a novel potential metallic glassy material for the functional application of wastewater treatment.

关键词： Metallic glasses Catalytic performance Degradation Azo dyes

Synthesis of (s)-(-)-Benzyl-2-tert-butoxycarbonyl amino-4-iodobutyrate

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Chinese Chemical Letters 2001年第9期12卷 767-768页

作者： xin Rong qin Quan LI Yu Yuan XIE State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaShanghai Institutes for Biological SciencesChinese Academy of ScienceShanghai 200031

A convenient method to synthesize (s)-(-)-benzyl-2-tert-butoxy carbonylamino-4-iodobutyrate from L-(+)methionine 1 was reported, the enantiomeric purity of the product was established by comparison of optical rotation... 详细信息

关键词： alpha-amino acid chiral

A Classification of Spectrum-determined Circulant Digraphs

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Acta Mathematicae Applicatae Sinica 2018年第4期34卷 703-709页

作者： Zheng-xin qin Ji-xiang MENG Qiong-xiang HUANG School of Mathematics and Information Technology Jiangsu Second Normal University Nanjing 210013 China Department of Mathematics Xinjiang University Urumuqi 830054 China

Some researchers have proved that Adam＇s conjecture is wrong. However, under special conditions,it is right. Let Zn be a cyclic group of order n and Cn（S） be the circulant digraph of Zn with respect to S？Zn／{0}. In the literature, some people have used a spectral method to solve the isomorphism for the circulants of prime-power order. In this paper, we also use the spectral method to characterize the circulants of order paqbωc（where p,q and ω are all distinct primes）, and to make Adam＇s conjecture right.

关键词： Circulant digraph Isomorphism Spectrum Cyclotomic polynomial

A Tradeoff Between Accuracy and Speed for K-Means Seed Determination

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Computer Systems Science & Engineering 2022年第3期40卷 1085-1098页

作者： Farzaneh Khorasani Morteza Mohammadi Zanjireh Mahdi Bahaghighat qin xin Computer Engineering Department Imam Khomeini International UniversityQazvinIran Faculty of Science and Technology University of the Faroe IslandsTorshavnFaroe Islands

With a sharp increase in the information volume,analyzing and retrieving this vast data volume is much more essential than *** of the main techniques that would be beneficial in this regard is called the Clustering *** aims to classify objects so that all objects within a cluster have similar features while other objects in different clusters are as distinct as *** of the most widely used clustering algorithms with the well and approved performance in different applications is the k-means *** main problem of the k-means algorithm is its performance which can be directly affected by the selection in the primary *** of attention to this crucial issue has consequences such as creating empty clusters and decreasing the convergence ***,the selection of appropriate initial seeds can reduce the cluster’s *** this paper,we present a new method to determine the initial seeds of the k-mean algorithm to improve the accuracy and decrease the number of iterations of the *** this purpose,a new method is proposed considering the average distance between objects to determine the initial *** method attempts to provide a proper tradeoff between the accuracy and speed of the clustering *** experimental results showed that our proposed approach outperforms the Chithra with 1.7%and 2.1%in terms of clustering accuracy for Wine and Abalone detection data,***,achieved results indicate that comparing with the Reverse Nearest Neighbor(RNN)search approach,the proposed method has a higher convergence speed.

关键词： Data clustering k-means algorithm information retrieval outlier detection clustering accuracy unsupervised learning