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A Rapid Adaptation Approach for Dynamic Air‑Writing Recognition Using Wearable Wristbands with Self‑Supervised Contrastive Learning

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Nano-Micro Letters 2025年第2期17卷 417-431页

作者： Yunjian Guo kunpeng li Wei Yue Nam‑Young Kim Yang li Guozhen Shen Jong‑Chul Lee Department of Electronic Convergence Engineering Kwangwoon UniversitySeoul 01897South Korea Radio Frequency Integrated Circuit(RFIC)Bio Centre Kwangwoon UniversitySeoul 01897South Korea Department of Electronic Engineering Kwangwoon UniversitySeoul 01897South Korea School of Microelectronics Shandong UniversityJinan 250101People’s Republic of China State Key Laboratory of Integrated Chips and Systems Fudan UniversityShanghai 200433People’s Republic of China School of Integrated Circuits and Electronics Beijing Institute of TechnologyBeijing 100081People’s Republic of China

Wearable wristband systems leverage deep learning to revolutionize hand gesture recognition in daily *** existing approaches that often focus on static gestures and require extensive labeled data,the proposed wearable wristband with selfsupervised contrastive learning excels at dynamic motion tracking and adapts rapidly across multiple *** features a four-channel sensing array composed of an ionic hydrogel with hierarchical microcone structures and ultrathin flexible electrodes,resulting in high-sensitivity capacitance *** wireless transmission from a Wi-Fi module,the proposed algorithm learns latent features from the unlabeled signals of random wrist ***,only few-shot labeled data are sufficient for fine-tuning the model,enabling rapid adaptation to various *** system achieves a high accuracy of 94.9%in different scenarios,including the prediction of eight-direction commands,and air-writing of all numbers and *** proposed method facilitates smooth transitions between multiple tasks without the need for modifying the structure or undergoing extensive task-specific *** utility has been further extended to enhance human–machine interaction over digital platforms,such as game controls,calculators,and three-language login systems,offering users a natural and intuitive way of communication.

关键词： Wearable wristband Self-supervised contrastive learning Dynamic gesture Air-writing Human-machine interaction

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Role-Based Network Embedding via Quantum Walk with Weighted Features Fusion

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Computers, Materials & Continua 2023年第8期76卷 2443-2460页

作者： Mingqiang Zhou Mengjiao li Zhiyuan Qian kunpeng li College of Computer Science Chongqing UniversityChongqing400044China

Role-based network embedding aims to embed role-similar nodes into a similar embedding space,which is widely used in graph mining tasks such as role classification and *** are sets of nodes in graph networks with similar structural patterns and ***,the rolesimilar nodes may be far away or even disconnected from each ***,the neighborhood node features and noise also affect the result of the role-based network embedding,which are also challenges of current network embedding *** this paper,we propose a Role-based network Embedding via Quantum walk with weighted Features fusion(REQF),which simultaneously considers the influence of global and local role information,node features,and ***,we capture the global role information of nodes via quantum walk based on its superposition property which emphasizes the local role information via biased quantum ***,we utilize the quantum walkweighted characteristic function to extract and fuse features of nodes and their neighborhood by different distributions which contain role information ***,we leverage the Variational Auto-Encoder(VAE)to reduce the effect of *** conduct extensive experiments on seven real-world datasets,and the results show that REQF is more effective at capturing role information in the network,which outperforms the best baseline by up to 14.6% in role classification,and 23% in role detection on average.

关键词： Role-based network embedding quantum walk quantum walk weighted characteristic function complex networks

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DADOS:A Cloud-based Data-driven Design Optimization System

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Chinese Journal of Mechanical Engineering 2023年第2期36卷 50-66页

作者： Xueguan Song Shuo Wang Yonggang Zhao Yin liu kunpeng li School of Mechanical Engineering Dalian University of TechnologyDalian 116024China AECC Shenyang Engine Research Institute Shenyang 110015China

This paper presents a cloud-based data-driven design optimization system,named DADOS,to help engineers and researchers improve a design or product easily and *** has nearly 30 key algorithms,including the design of experiments,surrogate models,model validation and selection,prediction,optimization,and sensitivity ***,it also includes an exclusive ensemble surrogate modeling technique,the extended hybrid adaptive function,which can make use of the advantages of each surrogate and eliminate the effort of selecting the appropriate individual *** improve ease of use,DADOS provides a user-friendly graphical user interface and employed flow-based programming so that users can conduct design optimization just by dragging,dropping,and connecting algorithm blocks into a workflow instead of writing massive *** addition,DADOS allows users to visualize the results to gain more insights into the design problems,allows multi-person collaborating on a project at the same time,and supports multi-disciplinary *** paper also details the architecture and the user interface of *** examples were employed to demonstrate how to use DADOS to conduct data-driven design *** DADOS is a cloud-based system,anyone can access DADOS at *** using their web browser without the need for installation or powerful hardware.

关键词： Data-driven Optimization Cloud-based software Design of experiments Surrogate model

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Failure Characteristics of Rock-like Mortar Specimens with Arc-shaped Flaws under Freezing-thaw Cycles and Uniaxial Compression

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Journal of Wuhan University of Technology(Materials Science) 2024年第6期39卷 1461-1473页

作者： li Yong li kunpeng ZHANG Shaowang YIN Futong WANG Chen DAI Feng WANG Kai Institute of Geotechnical and Underground Engineering Shandong UniversityJinan 250061China School of Qilu Transportation Shandong UniversityJinan 250002China School of Civil Engineering Shandong UniversityJinan 250061China Shandong Hispeed Group Jinan 250014China

To investigate the freeze-thaw(F-T)damages and failure characteristics of rock mass with arc-shaped joints in cold regions,three types of cement mortar specimens with different central angles and prefabricated arc-shaped flaws are subjected to uniaxial compressive tests under different F-T *** observations show that the uniaxial compressive strength of specimens are significantly influenced by F-T cycles and their failure modes are mainly affected by the central angleαof the prefabricated *** the specimens with a central angle of 60°,the specimens with a central angle of 120°and 180°have greater curvature of flaws,so tensile cracks occur in the arc-top area of their prefabricated *** to experimental images observed by environmental scanning electron microscope(ESEM),as the number of F-T cycles increases,the deterioration effect of the specimen becomes more obvious,which is specifically reflected in the increase of the mass loss,peak stress loss,and damage variables as a power function,and the peak strain decreases as a quadratic *** to numerical results using two-dimensional particle flow code(PFC2D),it is found that F-T cycles cause more damage to the specimen in the early stages than in the later *** area of the concentrated compressive stress zone in the middle is decreased due to the increased number of F-T cycles,while the area of the surrounding tensile-shear stress zone is *** models appear different failure modes due to the release of concentrated stress in different tensile-shear zones.

关键词： cement mortar material arc-shaped flaws freeze-thaw cycle failure pattern PFC2D

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Framework, model and algorithm for the global control of urban automated driving traffic

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FRONTIERS OF ENGINEERING MANAGEMENT 2024年第4期11卷 592-619页

作者： li, kunpeng Han, Xuefang Jin, Xianfei Huazhong Univ Sci & Technol Sch Management Wuhan 430074 Peoples R China Sabre Inc Southlake TX 76092 USA

Automated driving has recently attracted significant attention. While considerable research has been conducted on the technologies and societal acceptance of autonomous vehicles, investigations into the control and scheduling of urban automated driving traffic are still nascent. As automated driving gains traction, urban traffic control logic is poised for substantial transformation. Presently, both manual and automated driving predominantly operate under a local decision-making traffic mode, where driving decisions are based on the vehicle's status and immediate environment. This mode, however, does not fully exploit the potential benefits of automated driving, particularly in optimizing road network resources and traffic efficiency. In response to the increasing adoption of automated driving, it is essential for traffic bureaus to initiate proactive dialogs regarding urban traffic control from a global perspective. This paper introduces a novel global control mode for urban automated driving traffic. Its core concept involves the central scheduling of all autonomous vehicles within the road network through vehicle-infrastructure cooperation, thereby optimizing traffic flow. This paper elucidates the mechanism and process of the global control mode. Given the operational complexity of expansive road networks, the paper suggests segmenting these networks into multiple manageable regions. This mode is conceptualized as an autonomous vehicle global scheduling problem, for which a mathematical model is formulated and a modified A-star algorithm is developed. The experimental findings reveal that (i) the algorithm consistently delivers high-quality solutions promptly and (ii) the global scheduling mode significantly reduces traffic congestion and equitably distributes resources. In conclusion, this paper presents a viable and efficacious new control mode that could substantially enhance urban automated traffic efficiency.

关键词： automated driving urban traffic control global scheduling mode autonomous vehicle route planning A-star algorithm

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β-Cyclodextrin polymer based fluorescence enhancement method for sensitive adenosine triphosphate detection

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Chinese Chemical Letters 2019年第6期30卷 1249-1252页

作者： Chunxia Song Yuxin Xiao kunpeng li Xiaoyu Zhang Ying Lu Department of Applied Chemistry School of Science Anhui Agricultural University

Adenosine triphosphate plays a crucial role in regulation of many biological pathways and has been used as an indicator for many *** this pape r,based on the fact that β-cyclodextrin polymer(polyβ-CD)could significantly enhance pyrene fluorescence through supramolecular assembly(host-gest interaction),a sensitive and facile method for adenosine triphosphate detection has been developed.A 3’-pyrene-labelled ATP-binding aptamer was employed as the fluorescence probe,which could be digested by exonuclease I to obtain mononucleotides,with pyrene attached *** pyrene attached on mononucleotides could easily enter the hydrophobic cavity of polyβ-CD,accompanied with prominent fluo rescence *** ATP was introduced,ATP and its aptamer could combine together and the obtained hairpin complex could not be cleaved by exonuclease Ⅰ,The pyrene labelled on the probe could not enter the cavity of polyβ-CD belong to the complex’steric hindrance,accompanied with the weak pyrene’*** we could quantify the concentration of adenosine triphosphate facilely by measuring the fluorescence intensity of the *** detection limit of this method for adenosine triphosphate was 11 μmol/L(S/N=3),The developed method showed sufficient selectivity and could successfully assay adenosine triphosphate in biological *** developed method provides a potential platform for biological micromoles assay.

关键词： β-Cyclodextrin polymer Supramolecular assembly Fluorescence Enhancement Adenosine triphosphate

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Isogeometric Boundary Element Analysis for 2D Transient Heat Conduction Problem with Radial Integration Method

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Computer Modeling in Engineering & Sciences 2021年第1期126卷 125-146页

作者： Leilei Chen kunpeng li Xuan Peng Haojie lian Xiao lin Zhuojia Fu College of Architecture and Civil Engineering Xinyang Normal UniversityXinyang464000China Department of Mechanical Engineering Suzhou University of Science and TechnologySuzhou215009China Key Laboratory of In-Situ Property-ImprovingMining of Ministry of Education Taiyuan University of TechnologyTaiyuan030024China Institute for Computational Engineering Faculty of ScienceTechnology and CommunicationUniversity of LuxembourgLuxembourg The York Management School University of YorkYorkYO105GDUK College of Mechanics andMaterials Hohai UniversityNanjing211100China

This paper presents an isogeometric boundary element method(IGABEM)for transient heat conduction *** Non-Uniform Rational B-spline(NURBS)basis functions,which are used to construct the geometry of the structures,are employed to discretize the physical unknowns in the boundary integral formulations of the governing *** extraction technique is employed to accelerate the evaluation of NURBS basis *** adopt a radial integration method to address the additional domain *** numerical examples demonstrate the advantage of IGABEM in dimension reduction and the seamless connection between CAD and numerical analysis.

关键词： Isogeometric analysis NURBS boundary element method heat conduction radial integration method

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Subdivision Surface-Based Isogeometric Boundary Element Method for Steady Heat Conduction Problems with Variable Coefficient

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Computer Modeling in Engineering & Sciences 2021年第10期129卷 323-339页

作者： Xiuyun Chen Xiaomeng Yin kunpeng li Ruhui Cheng Yanming Xu Wei Zhang School of Architectural Engineering Huanghuai UniversityZhumadian463003China College of Intelligent Construction Wuchang University of TechnologyWuhan430223China College of Civil Engineering and Architecture China Three Gorges UniversityYichang443000China CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern MechanicsUniversity of Science and Technology of ChinaHefei230026China

The present work couples isogeometric analysis(IGA)and boundary element methods(BEM)for three dimensional steady heat conduction problems with variable *** Computer-Aided Design(CAD)geometries are built by subdivision surfaces,and meantime the basis functions of subdivision surfaces are employed to discretize the boundary integral equations for heat conduction ***,the radial integration method is adopted to transform the additional domain integrals caused by variable coefficients to the boundary *** numerical examples are provided to demonstrate the correctness and advantages of the proposed algorithm in the integration of CAD and numerical analysis.

关键词： Subdivision surface isogeometric boundary element method heat conduction radial integration

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Three-dimensional structure of the hepatitis B core antigen particle truncated at residue 154

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Science China(life Sciences) 2011年第2期54卷 171-174页

作者： liU ShuYu HE Jian li kunpeng DAI AGuang CAI ChangJie ZHANG JingQiang State Key Laboratory of Biocontrol Life Sciences School Sun Yat-sen University Guangzhou 510275 China Guangzhou East Campus Lab Center Sun Yat-sen University Guangzhou 510006 China Third Affiliated Hospital of Sun Yat-sen University Guangzhou 510080 China

The three-dimensional structure of recombinant hepatitis B core antigen（HBcAg） particles truncated at residue 154（HBcAg-154） was determined to 7.8 A resolution by cryo-electron microscopy（cryoEM） and computer *** capsid of HBcAg-154 is mainly constituted by α-helical folds,highly similar to that of *** C-terminal region between residues 155 and 183 of the core protein is more crucial to the encapsidation of RNA,and the short C-terminal tail of HBcAg-154 results in a nearly empty capsid.

关键词： HBcAg-154 particle capsid RNA cryoEM

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Signal Compensation Control Algorithm for Quadrotor Unmanned Aerial Vehicles 36

Signal Compensation Control Algorithm for Quadrotor Unmanned...

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第36届中国控制会议

作者： kunpeng li Zhihao Cai Jiang Zhao Jiang Lou Yingxun Wang Automation Science and Electrical Engineering Beihang University

ISBN: (纸本)9781538629185

In recent years, quadrotor unmanned aerial vehicles have played an important role in many aspects. Therefore, people put higher demands on the robustness of the quadrotor UAV’s control. In this paper, a control algorithm based on signal compensation is proposed. Compared with the PID algorithm, this algorithm has better robustness to external disturbance and modeling uncertainty. Moreover, the controller of this algorithm is relatively simple and easy to implement.

关键词： Signal Compensation Robustness Quadrotor

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