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Differential Evolution Based Receding Horizon Control for UAV Motion Planning in Dynamic Environments

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机器人 2013年第1期35卷 107-114页

作者： ZHANG xing School of Automation Beijing Institute of Technology Beijing 100081 China Key Laboratory of Complex System Intelligent Control and Decision Ministry of Education Beijing 100081 China Decision and Cognitive Sciences Research Centre Manchester Business School University of Manchester Manchester M15 6PB UK

This paper presents online motion planning for UAV(unmanned aerial vehicle) in complex threat field,including both static threats and moving threats,which can be formulated as a dynamic constrained optimal control *** horizon control(RHC) based on differential evolution(DE) algorithm is adopted.A location-predicting model of moving threats is established to assess the value of threat that UAV faces in *** flyable paths can be generated by the control inputs which are optimized by DE under the guidance of the objective *** results demonstrate that the proposed method not only generates smooth and flyable paths,but also enables UAV to avoid threats efficiently and arrive at destination safely.

关键词：无人机在线运动规划动态约束目标函数

New exact solutions for free vibrations of rectangular thin plates by symplectic dual method

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Acta Mechanica Sinica 2009年第2期25卷 265-270页

作者： y. xing B. Liu The Solid Mechanics Research Center, Beihang University, 100083 Beijing, China The Solid Mechanics Research Center Beihang University Beijing China

The separation of variables is employed to solve Hamiltonian dual form of eigenvalue problem for transverse free vibrations of thin plates, and formulation of the natural mode in closed form is performed. The closed-form natural mode satisfies the governing equation of the eigenvalue problem of thin plate exactly and is applicable for any types of boundary conditions. With all combinations of simplysupported （S） and clamped （C） boundary conditions applied to the natural mode, the mode shapes are obtained uniquely and two eigenvalue equations are derived with respect to two spatial coordinates, with the aid of which the normal modes and frequencies are solved exactly. It was believed that the exact eigensolutions for cases SSCC, SCCC and CCCC were unable to be obtained, however, they are successfully found in this paper. Comparisons between the present results and the FEM results validate the present exact solutions, which can thus be taken as the benchmark for verifying different approximate approaches.

关键词： Classical theory of thin plate Frequency Free vibrations Symplectic dual method Exact solution

Direct numerical simulation of Open Von Kármán Swirling Flow

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Journal of Hydrodynamics 2014年第2期26卷 165-177页

作者： xing Tao Department of Mechanical Engineering College of EngineeringUniversity of Idaho

Direct numerical simulations are used to investigate the Open Von Kfirmfin Swirling Flow, a new type of unsteady three-dimensional flow that is formed between two counter-rotating coaxial disks with an axial extraction enclosed by a cylinder chamber. Solution verification shows that monotonic convergence is achieved on three systematically refined grids for average pressure at the disk periphery with a small grid uncertainty at 3.5%. Effects of the rotational speeds and flow rates on the flow field are examined. When the disks are rotating at the lowest speed, ＋100 RPM, only circular vortices are formed regardless of the flow rates. When the disks are rotating at ＋300 RPM and ＋500 RPM, negative spiral vortex network is formed. The radial counterflow concept for such spiral vortex network is verified by examining various horizontal cuts and radial velocity component, which show radial outflows in two bands near the two disks and radial inflow in one band between them. Overall, the flow is similar to the Stewartson type flow but with significant differences for all three velocity components due to the axial suction at the upper disk center and gap between the disk periphery and chamber wall.

关键词： direct numerical simulation Open Von Kfirmfin flow swirling radial counterflow

A general framework for verification and validation of large eddy simulations

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Journal of Hydrodynamics 2015年第2期27卷 163-175页

作者： xing Tao Department of Mechanical Engineering College of EngineeringUniversity of Idaho

A general framework（methodology and procedures） for verification and validation（V＆V） of large eddy simulations in computational fluid dynamics（CFD） is derived based on two hypotheses. The framework allows for quantitative estimations of numerical error, modeling error, their coupling, and the associated uncertainties. To meet different needs of users based on their affordable computational cost, various large eddy simulation（LES） V＆V methods are proposed. These methods range from the most sophisticated seven equation estimator to the simplest one-grid estimator, which will be calibrated using factors of safety to achieve the objective reliability and confidence level. Evaluation, calibration and validation of various LES V＆V methods in this study will be performed using rigorous statistical analysis based on an extensive database. Identification of the error sources and magnitudes has the potential to improve existing or derive new LES models. Based on extensive parametric studies in the database, it is expected that guidelines for performing large eddy simulations that meet pre-specified quality and credibility criteria can be obtained. Extension of this framework to bubbly flow is also discussed.

关键词： framework verification and validation large eddy simulation(LES)

Runtime model based approach to IoT application development

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Frontiers of Computer Science 2015年第4期9卷 540-553页

作者： xing CHEN College of Mathematics and Computer Science Fuzhou University Fuzhou 350116 China Fujian Provincial Key Laboratory of Networking Computing and Intelligent Information Processing Fuzhou 350116 China Key Laboratory of High Confidence Software Technologies (Ministry of Education) Beijing 100871 China School of Electronics Engineering and Computer Science Peking University Beijing 100871 China

The internet of things （loT） attracts great interest in many application domains concerned with monitoring and ：ontrol of physical phenomena. However, application devel- opment is still one of the main hurdles to a wide adoption of IoT technology. Application development is done at a low level, very close to the operating system and requires pro- grammers to focus on low-level system issues. The under- lying APIs can be very complicated and the amount of data collected can be huge. This can be very hard to deal with as a developer. In this paper, we present a runtime model based approach to IoT application development. First, the manage- ability of sensor devices is abstracted as runtime models that are automatically connected with the corresponding systems. Second, a customized model is constructed according to a personalized application scenario and the synchronization be- tween the customized model and sensor device runtime mod- els is ensured through model transformation. Thus, all the application logic can be carried out by executing programs on the customized model. An experiment on a real-world ap- plication scenario demonstrates the feasibility, effectiveness, and benefits of the new approach to IoT application develop- ment.

关键词： IoT application development software architec-ture models at runtime

朋辈心理咨询进社区:高校“一站式”学生社区心理育人功能实践路径研究

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黑龙江高教研究 2025年第1期43卷 135-139页

作者：邢晓雪王怀勇南京工业大学江苏南京211816 上海师范大学上海200234

结合高校“一站式”学生社区综合管理模式建设提质增效工作指南,探讨朋辈咨询进入学生社区的天然耦合性,并从社会生态系统理论视角提出朋辈咨询嵌入“一站式”学生社区实现心理育人功能的多重路径选择,在微观环境中注重发挥朋辈咨询员... 详细信息

结合高校“一站式”学生社区综合管理模式建设提质增效工作指南,探讨朋辈咨询进入学生社区的天然耦合性,并从社会生态系统理论视角提出朋辈咨询嵌入“一站式”学生社区实现心理育人功能的多重路径选择,在微观环境中注重发挥朋辈咨询员的匹配优势,在中观环境中以朋辈咨询体制为抓手优化社区心理育人体系建设,在宏观环境中利用朋辈咨询资源加强常态化的“文化渗透式”心理健康教育,全方位、立体式、浸润式打通高校心理育人“最后一公里”。

关键词： “一站式”学生社区朋辈咨询心理育人社会生态系统理论

An Air Defense Weapon Target Assignment Method Based on Multi-Objective Artificial Bee Colony Algorithm

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Computers, Materials & Continua 2023年第9期76卷 2685-2705页

作者： Huaixi xing Qinghua xing Air and Missile Defense College Air Force Engineering UniversityXi’an710051China

With the advancement of combat equipment technology and combat concepts,new requirements have been put forward for air defense operations during a group target *** achieve high-efficiency and lowloss defensive operations,a reasonable air defense weapon assignment strategy is a key *** this paper,a multi-objective and multi-constraints weapon target assignment(WTA)model is established that aims to minimize the defensive resource loss,minimize total weapon consumption,and minimize the target residual *** optimization framework of air defense weapon mission scheduling based on the multiobjective artificial bee colony(MOABC)algorithm is *** solution for point-to-point saturated attack targets at different operational scales is achieved by encoding the nectar with real *** are performed for an imagined air defense scenario,where air defense weapons are *** non-dominated solution sets are obtained by the MOABC algorithm to meet the operational *** the case where there are more weapons than targets,more diverse assignment schemes can be *** to the inverse generation distance(IGD)index,the convergence and diversity for the solutions of the non-dominated sorting genetic algorithm III(NSGA-III)algorithm and the MOABC algorithm are compared and *** results prove that the MOABC algorithm has better convergence and the solutions are more evenly distributed among the solution space.

关键词： Weapon target assignment multi-objective artificial bee colony air defense defensive resource loss total weapon consumption target residual effectiveness

An oracle inequality for regularized risk minimizers with strongly mixing observations

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Frontiers of Mathematics in China 2013年第2期8卷 301-315页

作者： Feilong CAO xing xing Institute of Metrology and Computational Science China Jiliang UniversityHangzhou 310018 China

We establish a general oracle inequality for regularized risk minimizers with strongly mixing observations, and apply this inequality to support vector machine （SVM） type algorithms. The obtained main results extend the previous known results for independent and identically distributed samples to the case of exponentially strongly mixing observations.

关键词： Oracle inequality exponentially strongly mixing regularized risk minimizer

Advances and applications in single-cell and spatial genomics

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Science China Life Sciences 2025年

作者： Jingjing Wang Fang ye Haoxi Chai yujia Jiang Teng Wang Xia Ran Qimin Xia Ziye Xu yuting Fu Guodong Zhang Hanyu Wu Guoji Guo Hongshan Guo yijun Ruan yongcheng Wang Dong xing Xun Xu Zemin Zhang Beijing Advanced Innovation Center for Genomics (ICG) Peking University Guangdong Provincial Key Laboratory of Genome Read and Write BGI Research Bone Marrow Transplantation Center of the First Affiliated Hospital & Liangzhu Laboratory Zhejiang University School of Medicine Life Sciences Institute and The Second Affiliated Hospital Zhejiang University BGI Research Biomedical Pioneering Innovation Center (BIOPIC) and School of Life Sciences Peking University Academy for Advanced Interdisciplinary Studies Peking University Institute of Hematology Zhejiang University Department of Laboratory Medicine of The First Affiliated Hospital & Liangzhu Laboratory Zhejiang University School of Medicine Center for Stem Cell and Regenerative Medicine Zhejiang University School of Medicine Zhejiang Provincial Key Lab for Tissue Engineering and Regenerative Medicine Dr.Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine

The applications of single-cell and spatial technologies in recent times have revolutionized the present understanding of cellular states and the cellular heterogeneity inherent in complex biological systems. These advancements offer unprecedented resolution in the examination of the functional genomics of individual cells and their spatial context within tissues. In this review, we have comprehensively discussed the historical development and recent progress in the field of single-cell and spatial genomics. We have reviewed the breakthroughs in single-cell multi-omics technologies, spatial genomics methods, and the computational strategies employed toward the analyses of singlecell atlas data. Furthermore, we have highlighted the advances made in constructing cellular atlases and their clinical applications,particularly in the context of disease. Finally, we have discussed the emerging trends, challenges, and opportunities in this rapidly evolving field.

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