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

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 areas.This 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 requirements.Particularly in the presence of non-Gaussian noise,especially heavy-tailed noise,the MCCUKF exhibits superior accuracy and robustness compared to the traditional UKF.The 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 theMCC.Subsequently,the state and covariance matrices of the filter are updated by employing the unscented transformation on the measurement equations.Moreover,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 estimation.Simulation 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

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Neighbor Sum Distinguishing Total Choosability of Planar Graphs with Maximum Degree at Least 10

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Acta Mathematicae Applicatae Sinica 2024年第1期40卷 211-224页

作者： Dong-han Zhang you lu Sheng-gui Zhang Li Zhang School of Mathematics and Statistics Northwestern Polytechnical UniversityXi’an710129China School of Mathematics and Computer Application Shangluo UniversityShangluo726000China

A neighbor sum distinguishing(NSD)total coloringφof G is a proper total coloring of G such thatΣz∈EG(u)U{u}φ(z)≠Σz∈EG(v)U{v}φ(z)for each edge uv∈E(G),where EG(u)is the set of edges incident with a vertex u.In 2015,Pilśniak and Wozniak conjectured that every graph with maximum degreeΔhas an NSD total(Δ+3)-coloring.Recently,Yang et al.proved that the conjecture holds for planar graphs withΔ≥10,and Qu et al.proved that the list version of the conjecture also holds for planar graphs withΔ≥13.In this paper,we improve their results and prove that the list version of the conjecture holds for planar graphs withΔ≥10.

关键词： planar graphs neighbor sum distinguishing total choosibility combinatorial nullstellensatz discharging method

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List edge colorings of planar graphs without non-induced 7-cycles

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Acta Mathematica Sinica,English Series 2024年

作者： Li ZHANG Hajo BROERSMA you lu Shenggui ZHANG School of Mathematics and Computer Science Yan’an University School of Mathematics and Statistics Northwestern Polytechnical University Faculty of Electrical Engineering Mathematics and Computer Science University of Twente

A graph G is edge-k-choosable if, for any assignment of lists L(e) of at least k colors to all edges e ∈ E(G), there exists a proper edge coloring such that the color of e belongs to L(e) for all e ∈ E(G). One of Vizing's classic conjectures asserts that every graph is edge-(? + 1)-choosable.It is known since 1999 that this conjecture is true for general graphs with ? ≤ 4. More recently, in2015, Bonamy confirmed the conjecture for planar graph with ? ≥ 8, but the conjecture is still open for planar graphs with 5 ≤ ? ≤ 7. We confirm the conjecture for planar graphs with ? ≥ 6 in which every 7-cycle(if any) induces a C7(so, without chords), thereby extending a result due to Dong, Liu and Li.

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Early results of the integrative epigenomic-transcriptomic landscape of colorectal adenoma and cancer

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World Journal of Gastrointestinal Oncology 2024年第2期16卷 414-435页

作者： you-Wang lu Zhao-Li Ding Rui Mao Gui-Gang Zhao Yu-Qi He Xiao-lu Li Jiang Liu Department of Dermatology and Venereology The First Affiliated Hospital of Kunming Medical UniversityKunming 650032Yunnan ProvinceChina Kunming Biological Diversity Regional Center of Large Apparatus and Equipments Public Technical Service CenterKunming Institute of ZoologyKunming 650223Yunnan ProvinceChina School of Stomatology Kunming Medical UniversityKunming 650500Yunnan ProvinceChina Genome Center of Biodiversity Kunming Institute of ZoologyChinese Academy of ScienceKunming 650223Yunnan ProvinceChina Department of Reproduction and Genetics The First Affiliated Hospital of Kunming Medical UniversityKunming 650032Yunnan ProvinceChina

BACKGROUND Aberrant methylation is common during the initiation and progression of colorectal cancer(CRC),and detecting these changes that occur during early adenoma(ADE)formation and CRC progression has clinical value.AIM To identify potential DNA methylation markers specific to ADE and CRC.METHODS Here,we performed SeqCap targeted bisulfite sequencing and RNA-seq analysis of colorectal ADE and CRC samples to profile the epigenomic-transcriptomic landscape.RESULTS Comparing 22 CRC and 25 ADE samples,global methylation was higher in the former,but both showed similar methylation patterns regarding differentially methylated gene positions,chromatin signatures,and repeated elements.High-grade CRC tended to exhibit elevated methylation levels in gene promoter regions compared to those in low-grade CRC.Combined with RNA-seq gene expression data,we identified 14 methylation-regulated differentially expressed genes,of which only AGTR1 and NECAB1 methylation had prognostic significance.CONCluSION Our results suggest that genome-wide alterations in DNA methylation occur during the early stages of CRC and demonstrate the methylation signatures associated with colorectal ADEs and CRC,suggesting prognostic biomarkers for CRC.

关键词： Colorectal cancer Epigenomic alteration Transcriptome Methylation-regulated differentially expressed genes

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Global structure of spectra of periodic non-Hermitian Jacobi operators

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Science China Mathematics 2024年

作者： Hui lu Jiangong you School of Mathematics Nanjing Audit University Chern Institute of Mathematics and LPMC Nankai University

We give global structure of spectra of periodic non-Hermitian Jacobi operators by the discriminant and its stationary points. We also give necessary and sufficient conditions for real spectra and single interval spectra.

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Interfacial engineering for high-performance garnet-based solid-state lithium batteries

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SusMat 2024年第1期4卷 72-105页

作者： Lingchen Wang Jiaxin Wu Chengshuai Bao Zichang you Yan lu Zhaoyin Wen State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghaiChina

Solid-state batteries represent the future of energy storage technology,offering improved safety and energy ***-type Li_(7)La_(3)Zr_(2)O_(12)(LLZO)solidstate electrolytes-based solid-state lithium batteries(SSLBs)stand out for their appealingmaterial properties and chemical stability.Yet,their successful deployment depends on conquering interfacial challenges.This review article primarily focuses on the advancement of interfacial engineering for LLZO-based SSLBs.We commence with a concise introduction to solid-state electrolytes and a discussion of the challenges tied to interfacial properties in LLZO-based SSLBs.We deeply explore the correlations between structure and properties and the design principles vital for achieving an ideal electrode/electrolyte interface.Subsequently,we delve into the latest advancements and strategies dedicated to overcoming these challenges,with designated sections on cathode and anode interface design.In the end,we share our insights into the advancements and opportunities for interface design in realizing the full potential of LLZO-based SSLBs,ultimately contributing to the development of safe and high-performance energy storage solutions.

关键词： anode interfaces cathode interfaces garnet-based electrolytes interfacial modifications solidstate lithium batteries

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Photoswitchable Molecular Recognition Enabled by Dithienylethene-Mediated Structural Changes of Dynamic Covalent Hydrazone Bonds

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CCS Chemistry 2024年第2期6卷 497-506页

作者： Lifeng Wang Hanxun Zou Hebo Ye Yu Hai Hanwei lu Junmiao Deng Lei you State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002 College of Chemistry and Material Science Fujian Normal UniversityFuzhou 350007 University of Chinese Academy of Sciences Beijing 100049 Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108

Light-induced recognition,assemblies,and materials are intensive areas of research due to their high spatiotemporal resolution.Herein,we demonstrated photoswitchable molecular recognition via dithienylethene-triggeredreversible structural regulation of dynamic covalent hydrazone bonds.By combining dithienylethenes and cyclic hemiacetals,the photochemical open-ring and closed-ring forms enabled turningoff and on the creation of awide range of hydrazones when desired.Light-induced bidirectional switching between hydrazones and their cyclization structures promoted by a neighboring carboxyl group was further achieved.By taking advantage of reversible structural changes totoggleon andoff the binding pocket,photoswitchable recognitionofmetal ionswas realized.Finally,the construction of an acylhydrazone polymer offered a facile way for light-mediated selective extraction/release.The strategies and results reported here should find applications in many contexts,such asdynamicassemblies,molecular switches,and smart materials.

关键词： molecular recognition photoswitch dynamic covalent chemistry hydrazone selective extraction/release

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Engineering classification recycling of spent lithium-ion batteries through pretreatment:a comprehensive review from laboratory to scale-up application

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Rare Metals 2024年第3期43卷 915-941页

作者： Shu-Xuan Yan you-Zhou Jiang Xiang-Ping Chen lu Yuan Ting-Ting Min Yu Cao Wan-Li Peng Tao Zhou Hunan Provincial Key Laboratory of Chemical Power Sources College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China College of Chemistry and Chemical Engineering Hunan Normal UniversityChangsha 410083China School of Public Policy and Management Tsinghua UniversityBeijing 100084China China Nonferrous Metal Industry's Foreign Engineering and Construction Co. LtdBeijing 100029China

The lithium-ion batteries(LIBs)have been widely equipped in electric/hybrid electric vehicles(EVs/HEVs)and the portable electronics due to their excellent electrochemical performances.However,a large number of retired LIBs that consist of toxic substances(e.g.,heavy metals,electrolytes)and valuable metals(e.g.,Li,Co)will inevitably flow into the waste stream,and their incineration or landfill treatment will cause severe risks to ecosystem and human beings.The sustainable and efficient treatment or recycling of valuable resources from spent LIBs should be fully recognized for environmental and resource security.As one of the most important processes for spent LIBs recycling,the pretreatment is an indispensable step,which is directly related to the subsequent metal extraction and separation processes.Although considerable progresses have been made regarding the pretreatment technologies,there are few summarized reports concerning critical processes of spent LIBs recycling,especially combination of currently available recycling technologies with industrialized applications during pretreatments.Therefore,comprehensive review of the current prevailing pretreatment technologies in laboratory to existing scale-up applications is quite necessary to reveal cutting-edge development in the field of pretreatment.In this review,the current pretreatment technologies are systematically categorized and introduced,along with critical discussions.This review focused on the various options for pretreatment processes itself,instead of general spent LIBs recycling technologies without the focused topics that have been sophisticatedly reviewed by previous studies.Here,the deactivation,discharge,dismantling,separation,liberation of active material and electrolyte treatment have been summarized with the in-depth discussion of the technology development and current status of each category.Finally,current states of industrial development are also reviewed and discussed for the development of efficient and environmentally friendly recyclin

关键词： Spent lithium-ion batteries(LIBs) Recycling Pretreatment Valuable metals Cutting-edge technologies Industrialized application

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Sparse Reconstructive Evidential Clustering for Multi-View Data

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IEEE/CAA Journal of Automatica Sinica 2024年第2期11卷 459-473页

作者： Chaoyu Gong Yang you School of Computing National University of SingaporeSingapore

Although many multi-view clustering(MVC) algorithms with acceptable performances have been presented, to the best of our knowledge, nearly all of them need to be fed with the correct number of clusters. In addition, these existing algorithms create only the hard and fuzzy partitions for multi-view objects,which are often located in highly-overlapping areas of multi-view feature space. The adoption of hard and fuzzy partition ignores the ambiguity and uncertainty in the assignment of objects, likely leading to performance degradation. To address these issues, we propose a novel sparse reconstructive multi-view evidential clustering algorithm(SRMVEC). Based on a sparse reconstructive procedure, SRMVEC learns a shared affinity matrix across views, and maps multi-view objects to a 2-dimensional humanreadable chart by calculating 2 newly defined mathematical metrics for each object. From this chart, users can detect the number of clusters and select several objects existing in the dataset as cluster centers. Then, SRMVEC derives a credal partition under the framework of evidence theory, improving the fault tolerance of clustering. Ablation studies show the benefits of adopting the sparse reconstructive procedure and evidence theory. Besides,SRMVEC delivers effectiveness on benchmark datasets by outperforming some state-of-the-art methods.

关键词： Evidence theory multi-view clustering(MVC) optimization sparse reconstruction

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Non-Deterministic Liveness-Enforcing Supervisor Tolerant to Sensor-Reading Modification Attacks

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IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 240-248页

作者： Dan you Shouguang Wang IEEE the School of Information and Electronic Engineering Sussex Artificial Intelligence InstituteZhejiang Gongshang UniversityHangzhou 310018China

In this paper, we study the supervisory control problem of discrete event systems assuming that cyber-attacks might occur. In particular, we focus on the problem of liveness enforcement and consider a sensor-reading modification attack(SM-attack) that may disguise the occurrence of an event as that of another event by intruding sensor communication channels. To solve the problem, we introduce non-deterministic supervisors in the paper, which associate to every observed sequence a set of possible control actions offline and choose a control action from the set randomly online to control the system. Specifically, given a bounded Petri net(PN) as the reference formalism and an SMattack, an algorithm that synthesizes a liveness-enforcing nondeterministic supervisor tolerant to the SM-attack is proposed for the first time.

关键词： Cyber-attacks cyber-physical system(CPS) liveness non-deterministic supervisors Petri net(PN)

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