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Maximum Correntropy Criterion-Based UKF for Loosely Coupling INS and UWB in Indoor Localization

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Computer Modeling in Engineering & Sciences 2024年第6期139卷 2673-2703页

作者： Yan Wang You Lu yuqing zhou Zhijian Zhao Department of Computer and Communication Engineering Northeastern UniversityQinhuangdao066004China

Indoor positioning is a key technology in today’s intelligent environments,and it plays a crucial role in many application *** paper proposed an unscented Kalman filter(UKF)based on the maximum correntropy criterion(MCC)instead of the minimummean square error criterion(MMSE).This innovative approach is applied to the loose coupling of the Inertial Navigation System(INS)and Ultra-Wideband(UWB).By introducing the maximum correntropy criterion,the MCCUKF algorithm dynamically adjusts the covariance matrices of the system noise and the measurement noise,thus enhancing its adaptability to diverse environmental localization *** in the presence of non-Gaussian noise,especially heavy-tailed noise,the MCCUKF exhibits superior accuracy and robustness compared to the traditional *** method initially generates an estimate of the predicted state and covariance matrix through the unscented transform(UT)and then recharacterizes the measurement information using a nonlinear regression method at the cost of ***,the state and covariance matrices of the filter are updated by employing the unscented transformation on the measurement ***,to mitigate the influence of non-line-of-sight(NLOS)errors positioning accuracy,this paper proposes a k-medoid clustering algorithm based on bisection k-means(Bikmeans).This algorithm preprocesses the UWB distance measurements to yield a more precise position *** results demonstrate that MCCUKF is robust to the uncertainty of UWB and realizes stable integration of INS and UWB systems.

关键词： Maximum correntropy criterion unscented Kalman filter inertial navigation system ultra-wideband bisecting kmeans clustering algorithm

Convergence Analysis of Village Collective Economy Based on a Long-Term (1978-2018) Observation of 40 Villages in the Suburbs of Beijing

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China Finance and Economic Review 2023年第1期12卷 110-128,F0003页

作者： Xueyuan Chen yuqing zhou Ning Weng Beijing Rural Economy Research Center Agricultural Development Bank of China Fujian Academy of Agricultural Sciences

This paper uses the follow-up survey data of six time points between 1978 and 2018 from 40 fixed observation points in Beijing suburbs by stratified sampling,and makes a long-term observation and analysis of the convergence of village collective economy(VCE).The main findings are as follows.(1)Since the start of reform and opening-up,the gap between villages in terms of total village economic income(TVEI)and total assets of village collectives has obviously widened,and the gap between villages in terms of the number of members of VCE organizations has also widened to a certain extent.(2)There is a big gap in VCE between villages in urban-rural fringe,plain and mountainous areas,and the convergence of"space club"appears.(3)In the early stage of reform and opening up,the VCE development had the opportunity to reshuffle,but from 1998 to 2018,village development showed a trend of"goodmedium-poor"'hierarchical ***,it is necessary to explore a new path of cross-village joint development,especially to develop and strengthen the township-level collective economy,so as to promote farmers'common prosperity in ruralareas.

关键词： collective economy convergence regional disparity ""space club"convergence

Adaptive sensitive frequency band selection for VMD to identify defective components of an axial piston pump

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Chinese Journal of Aeronautics 2022年第1期35卷 250-265页

作者： Anil KUMAR C.P.GANDHI Hesheng TANG Govind VASHISHTHA Rajesh KUMAR yuqing zhou Jiawei XIANG College of Mechanical and Eilectrical Engineering Wenzhou UniversityWenzhou 325035China Amity University Uttar Pradesh Noida 201313India Ray at Bahru University Mohali 140104India Sant Longowal Institute of Engineering and Technology Longowal 148106India

The underlying study investigates single valued neutrosophic entropy based adaptive sensitive frequency band selection for variational mode decomposition(VMD)for the purpose of identifying defective components in an axial *** proposed methodology is applied in the following ***,VMD is applied for decomposing vibration signals into various frequency bands,called as *** computing energy of each VMD,the lower(minimum)and upper(maximum)bounds from these energy readings are extracted for defect conditions,such as outer race,inner race,worn piston,faulty cylinder and valve plate,and blocked hole of the ***,energy interval ranges are obtained and further converted into the form of single valued neutrosophic sets(SVNSs).Then,the proposed neutrosophic entropy measure is deployed for quantifying the non-linear connection between each bearing defect conditions and various frequency *** mode having maximum neutrosophic entropy value is designated to the“most sensitive”frequency ***,envelope demodulation is applied to the most sensitive selected frequency band for finding defective *** proposed neutrosophic entropy and VMD based methodology is effective in providing a better insight for selecting suitable frequency band for carrying out envelope demodulation in comparison to existing methods.

关键词： Axial piston pump Frequency band selection Reciprocating machinery Rotating machinery Trigonometric neutrosophic entropy Variational mode decomposition Vibration

Analysis on Regional Income Gap and Spatial Convergence in China’s Rural Collective Economy

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China Finance and Economic Review 2021年第4期10卷 51-76页

作者： Xueyuan Chen yuqing zhou Lei Wang Mengjie Sun Beijing Rural Economy Research Center Agricultrural Development Bank of China Institute of Industrial Economics of CASS

This paper empirically demonstrates a significant correlation between rural collective economic development,farmers’income and urban-rural relative income *** 2009-2018 descriptive statistics on growth characteristics and regional development of rural collective economy in China,the regional disparity,source structure and development profile of collective economic income are measured,and an analysis on the spatial convergence of rural collective economy is conducted from multiple *** finds that:Firstly,while China witnesses rural collective economic income rapidly grows,regional disparities have been failing to be ***,rural collective economic income gap in China has not significantly narrowed over a *** is mainly due to the inter-group differences in geographical *** income gap is further widening in the eastern region and shrinking in the central and western ***,capital accumulation prominently contributes to the convergence of collective economy in the eastern region,while technical indicators such as information computerization play signifi cant role to the convergence of other *** rate and period of convergence,it takes about 22-30 years for backward provinces to catch up with leading *** variables,such as capital accumulation and information computerization,are controlled,the period of convergence shortens to 20-24 ***,rural collective economic income in China has already showed a spatial club convergence of low-level equilibrium trap.

关键词： collective economic income regional disparity spatial convergence spatial club convergence

THE EQUIVALENCE BETWEEN 2Gs AND 2Es AND A NEW PROOF TO PUMPING LEMMA

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Transactions of Tianjin University 1996年第1期2卷 72-77页

作者： zhou yuqing LIU Boying Dept.of Computer Science and Engineering Management College Tianjin University

In this paper, the concept of type 2 expressions (2Es for short) is briefly introduced, and it is proved strictly that CFL class is precisely the language class expressed by 2Es. A new proof using 2Es to pumping lemma... 详细信息

关键词： language grammar type 2 expression pumping lemma

Multiple solutions and fermion mass effect in QED_3

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Journal of Southeast University(English Edition) 2013年第4期29卷 456-462页

作者：周雨青东南大学物理系南京211189

Due to the negligible non-perturbation effect in the low-energy region, quantum chromodynamics （QCD） is limited to be applied to hadron problems in particle physics. However, QED has mature non-perturbation models which can be applied to Fermi acting-energy between quark and gluon. This paper applies quantum electrodynamics in 2 ＋ 1 dimensions （QED3） to the Fermi condensation problems. First, the Dyson-Schwinger equation which the fermions satisfy is constructed, and then the Fermi energy gap is solved. Theoretical calculations show that within the chirality limit, there exist three solutions for the energy gap; beyond the chirality limit, there are two solutions; all these solutions correspond to different fermion condensates. It can be concluded that the fermion condensates within the chirality limit can be used to analyze the existence of antiferromagnetic, pseudogap, and superconducting phases, and two fermion condensates are discovered beyond the chirality limit.

关键词： Dyson-Schwinger equation chiral limit beyond chiral limit fermion condensate multiple solutions quantum electrodvnamics in 2 + 1 dimensions (OED3)

A One-Health Sampling Strategy to Explore the Dissemination and Relationship Between Colistin Resistance in Human,Animal,and Environmental Sectors in Laos

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Engineering 2022年第8期8卷 45-56页

作者： yuqing zhou Refath Farzana Somsavanh Sihalath Sayaphet Rattanavong Manivanh Vongsouvath Mayfong Mayxay Kirsty Sands Paul N.Newton David A.B.Dance Brekhna Hassan Timothy R.Walsh Department of Zoology University of OxfordOxford OX13SZUK Ineos Oxford Institute for Antimicrobial Research(IOI) University of OxfordOxford OX13REUK Department of Medical Microbiology Institute of Infection and ImmunitySchool of MedicineCardiff UniversityCardiff CF144XNUK Lao-Oxford-Mahosot Hospital-Wellcome Trust Research Unit Microbiology LaboratoryMahosot HospitalVientiane PO Box 292Lao PDR Centre for Tropical Medicine&Global Health Nuffield Department of MedicineUniversity of OxfordOxford OX37BNUK Institute of Research and Education Development University of Health SciencesVientiane PO Box 7444Lao PDR Faculty of Infectious and Tropical Diseases London School of Hygiene and Tropical MedicineLondon WC1E 7HTUK

This study was designed to investigate the molecular epidemiology of mobile colistin resistance(mcr)using a"One-Health"approach in Laos and to predict whether any dominant plasmid backbone and/or strain type influences the dissemination of *** collected 673 samples from humans(rectal normal flora),poultry,and the environment(water,flies,birds,etc.)in Vientiane,Lao People’s Democratic Republic(Laos),from May to September 2018.A total of 238 Escherichia coli(***)isolated from nonduplicative samples,consisting of 98 MCR-positive ***(MCRPEC)("mcr"denotes the gene encoding mobile colistin resistance,and"MCR"denotes the subsequent protein encoded by mcr)and 140 MCRnegative ***(MCRNEC),were characterized by phenotype and Illumina sequencing.A subset of MCRPEC was selected for Min ION sequencing,conjugation assay,plasmid stability,and growth kinetics in *** prevalence of MCRPEC was found to be 14.6%(98/673),with the highest prevalence in human rectal swabs(45.9%(45/98),p<0.0001,odds ratio(OR):0.125,95% confidence interval(CI):0.077-0.202).The percentages of MCRPEC from other samples were 14.3%(2/14)in dog feces,12.0%(24/200)in flies,11.0%(11/100)in chicken meat,8.9%(8/90)in chicken cloacal,8.0%(4/50)in chicken caeca,and 7.5%(4/53)in *** was significantly more resistant to co-amoxiclav,sulfamethoxazoletrimethoprim,levofloxacin,ciprofloxacin,and gentamicin than MCRNEC(p<0.05).Genomic analysis revealed the distribution of MCRPEC among diverse clonal *** putative plasmid Inc types associated with mcr-1 were Inc X4,Inc HI2,Inc P1,Inc I2,and Inc FIA,and those associated with mcr-3 were Inc FII,Inc FIA,Inc FIB,Inc P1,and Inc *** of highly similar plasmids from both flies and other sampling sectors implied the role of flies in the dissemination of ***-positive plasmids were shown to be conjugative,and a significantly high transfer rate into a hypervirulent clone ST1193 was *** containing mcr irrespective of Inc type w

关键词： Colistin resistance mcr Escherichia coli Laos Horizontal transmission

Dynamical chiral symmetry breaking in QED_3

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Journal of Southeast University(English Edition) 2014年第4期30卷 544-549页

作者：周雨青东南大学物理系南京211189

In order to examine how a propagator behaves in non-perturbative theories and how its behavior is influenced by the choice of a covariant gauge a truncated Dyson-Schwinger equation is used to numerically investigate the properties of fermions and bosons in 3D quantum electrodynamics QED and a series of self-consistent solutions for the fermion propagator in the Nambu and Wigner phases are obtained. These numerical solutions show that the propagator behaves very differently in the Landau gauge domain and in the infrared energy region outside *** using the propagators in the Nambu and Wigner phases under various gauges it is further investigated how the fermion equivalent pressure difference and fermion condensation change with the gauge *** results indicate that the phase transition described by the CJT equivalent potential and the chiral phase transition described by the chiral condensation are not completely identical.

关键词： propagator covariant gauge 3D quantumelectrodynamics ( QED ) equivalent pressure difference fermion condensation chiral phase transition

Therapeutic Effect of Qianjin Lotion on Eczema in Mice and Its Mechanism

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Medicinal Plant 2021年第3期12卷 84-85,90页

作者： yuqing zhou Guangyuan XIE Jun LIU Min HUANG The First Affiliated Hospital of Guangxi University of Chinese Medicine Nanning 530001 China

[Objectives]To study the therapeutic effect and mechanism of Qianjin Lotion on eczema in mice.[Methods]A mouse eczema model was established by the 2,4-dinitrochlorobenzene *** indicators of mouse ear swelling degree,the number of dermal inflammatory cells,the number of body licking reactions,the IL-2 and TNF-αcontent in serum were detected to explore the therapeutic effect and mechanism of Qianjin Lotion on eczema in mice.[Results]Qianjin Lotion can effectively eliminate skin inflammation,reduce the degree of auricle swelling,reduce the number of dermal inflammation cells,reduce the number of body licking reactions,and reduce the IL-2 and TNF-αcontent in serum.[Conclusions]Qianjin Lotion can alleviate the symptoms of eczema in mice,reduce inflammatory *** with oral administration of Qianjin granules,it can treat eczema and achieve good effects.

关键词： Qianjin Lotion Eczema Mouse