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基于DQN的无人机主动捕捉拦阻回收方法
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作者 王一峰 彭一明 +2 位作者 李龙 魏小辉 聂宏 《航空学报》 北大核心 2025年第12期226-239,共14页
使用拦阻索回收无人机时,钩索成功率是评估其回收安全性与可靠性的关键指标之一。针对无人机回收区域受限的情况下如何提高钩索成功率这一问题,提出了一种无人机主动捕捉拦阻回收方法,通过在车载移动平台的拦阻系统在人工智能计算结果... 使用拦阻索回收无人机时,钩索成功率是评估其回收安全性与可靠性的关键指标之一。针对无人机回收区域受限的情况下如何提高钩索成功率这一问题,提出了一种无人机主动捕捉拦阻回收方法,通过在车载移动平台的拦阻系统在人工智能计算结果的引导下主动移动至最佳钩索位置来提高无人机的钩索成功率。首先,建立无人机着陆回收拦阻动力学模型来计算钩索失效边界,使用支持向量机(SVM)方法对动力学仿真结果进行识别,并生成无人机钩索分析代理模型。然后,将移索过程简化成马尔可夫决策过程,使用移索装置模型作为训练环境,六自由度无人机着陆下滑模型生成数据集,钩索分析代理模型构成奖励函数,采用深度Q网络(DQN)训练得到能够实时计算并引导拦阻装置向最佳钩索位置主动调整的移索策略。仿真结果显示,在回收空间受限的情况下,与传统被动式拦阻回收方法相比,使用主动捕捉拦阻方法钩索成功率提高了29%。该方法有效提高了无人机着陆回收的安全性和可靠性,为智能化回收技术的发展提供了新的理论支持和实践方案。 展开更多
关键词 固定翼无人机 着陆回收 钩索成功率 DQN 人工智能
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建构主义思想指导下理论课与实践课有机结合的探索--以大学化学类课程为例 被引量:6
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作者 彭一鸣 刘英菊 +1 位作者 刘伟章 邓远富 《大学化学》 CAS 2021年第7期1-7,共7页
尝试在建构主义教学思想指导下,通过微课、QQ课程群、学生互助学习小组等举措对无机及分析化学课程与基础化学实验课程进行有机结合的改革与创新。补足目前教学过程中的短板,方便学生通过微课"直观"地理解理论,掌握实验原理... 尝试在建构主义教学思想指导下,通过微课、QQ课程群、学生互助学习小组等举措对无机及分析化学课程与基础化学实验课程进行有机结合的改革与创新。补足目前教学过程中的短板,方便学生通过微课"直观"地理解理论,掌握实验原理。实践表明,两门课程均获得不错的教学效果,为继续深化课程教学改革积累了经验。 展开更多
关键词 建构主义 无机及分析化学 基础化学实验 有机结合 微课
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Reliability analysis of arresting hook engaging arresting cable for carrier-based aircraft influenced by multifactors 被引量:4
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作者 yiming peng Yin YIN +2 位作者 pengpeng XIE Xiaohui WEI Hong NIE 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2023年第1期311-323,共13页
The carrier-based aircraft landing and arrest process is complex and nonlinear,and includes the coupling effect between the aircraft and arresting system.It has many uncertain factors,which lead to difficulty in the r... The carrier-based aircraft landing and arrest process is complex and nonlinear,and includes the coupling effect between the aircraft and arresting system.It has many uncertain factors,which lead to difficulty in the reliability analysis.To make the reliability analysis more accurate and effective,this paper presents some studies.Taking a certain type of carrier-based aircraft as the research object,a dynamic model of the landing and arrest cable was established,and the accuracy of the model was verified using laboratory test results.Based on the model,this paper shows how the key parameters,including the sinking velocity,pitch angle and horizontal velocity,affect the collision rebound performance of the arresting hook.After that,a limit state equation of the arresting hook system’s reliability was established.For the implicit limit state equation,a surrogate model of the reliability of the arresting hook was established using the Support Vector Machine(SVM)method,and then reliability analysis was carried out using the Monte Carlo method.Finally,it was explained in detail how the key parameters affect the reliability of the hook engaging the arresting cable,and some meaningful conclusions were obtained.This analysis method and its results can provide a reference for the top-level parameter design of carrier-based aircraft and reliability research on the arresting systems. 展开更多
关键词 Arresting cable Arresting devices DYNAMICS RELIABILITY Support Vector Machines
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Advances in Cellular Immune Theranostic Approaches for Glioblastoma:Current Trends and Future Directions
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作者 Ying Gong Wanying Lin +12 位作者 Xuechun Fang Ruyi Zhang Min Luo Haoran Wu Shuai Chu Chuangkun Li yiming peng Zhiyan Piao Siping Wu Junhao Li ZongZhong He Haixia Li Hongxia Wang 《Cancer Innovation》 2025年第4期11-33,共23页
Glioblastoma is a highly malignant type of brain tumor that remains one of the most challenging cancers to treat because of its aggressive nature,genetic heterogeneity,and immunosuppressive tumor microenvironment.Desp... Glioblastoma is a highly malignant type of brain tumor that remains one of the most challenging cancers to treat because of its aggressive nature,genetic heterogeneity,and immunosuppressive tumor microenvironment.Despite advances in standard treatments,such as surgery,radiation,and chemotherapy,patient outcomes remain poor,driving the need for innovative therapeutic approaches.Cellular immune theranostics,which combines therapeutic and diagnostic capabilities,has emerged as a promising strategy to combat glioblastoma.The present review discusses recent advances in cellular immunotherapy,including the development and application of chimeric antigen receptor T cells,chimeric antigen receptor natural killer cells,and macrophage-based therapies.In addition,this review highlights the potential of oncolytic viruses and personalized tumor vaccines for improving immunotherapy outcomes.The integration of advanced diagnostic tools,such as the real-time monitoring of therapeutic responses through immunobiomarkers and imaging techniques,is emphasized as crucial for optimizing treatment strategies.However,important challenges remain,including the complexity of immune cell engineering,the difficulties of therapeutic delivery across the blood-brain barrier,and the immunosuppressive properties of the tumor microenvironment.Overcoming these challenges through innovative methodologies will be vital for improving the efficacy of cellular immune theranostics in the treatment of glioblastoma,with the ultimate goal of improving patient survival and quality of life. 展开更多
关键词 CAR-T therapy checkpoint inhibitor GLIOBLASTOMA IMMUNOTHERAPY tumor microenvironment
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