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基于近端策略优化的Leader-Follower无人机编队控制
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作者 霍琳 高永霖 +1 位作者 赵锐 李泽铎 《兵器装备工程学报》 北大核心 2025年第S1期180-187,共8页
针对多无人机编队系统中如何实现高效率自主飞行、提高编队飞行控制精度的问题,提出了一种基于近端策略优化(PPO)与领导-跟随(leader-follower)策略结合的无人机编队飞行控制方法。通过定义状态空间、动作空间建立无人机的观测模型和控... 针对多无人机编队系统中如何实现高效率自主飞行、提高编队飞行控制精度的问题,提出了一种基于近端策略优化(PPO)与领导-跟随(leader-follower)策略结合的无人机编队飞行控制方法。通过定义状态空间、动作空间建立无人机的观测模型和控制模型;设计MLP-GRU-ACTLayer的策略网络架构,对观测数据进行特征提取及动作输出,并在训练过程中通过分布熵和动作评估方法对策略进行优化;设计奖惩机制引导无人机学习航向、高度和速度的控制策略,实现编队飞行的稳定性和适应性;同时将基于三变量(航向、高度、速度)的领导-跟随策略应用到编队飞行中,实现整体编队飞行控制。仿真结果表明,该方法能够高效实现无人机编队飞行控制,较传统方法将高度最大差值减少了7 m,速度最大差值减少了5 m/s。 展开更多
关键词 无人机编队 近端策略优化 领导-跟随策略 三变量 编队保持
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从海尔、卡萨帝到Leader,三翼鸟用多品牌矩阵满足中国家庭需求
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作者 学智居 《互联网周刊》 2025年第21期14-15,共2页
现如今,智能家居正加速走向千家万户。然而,在解决“有没有”的市场需求后,长期以来体验同质化、碎片化的问题,却成为用户追求“好不好”的实际阻碍。在今天,每个人对理想家的想法各不相同,比如对年轻人来说解放双手是主要目标,而三口... 现如今,智能家居正加速走向千家万户。然而,在解决“有没有”的市场需求后,长期以来体验同质化、碎片化的问题,却成为用户追求“好不好”的实际阻碍。在今天,每个人对理想家的想法各不相同,比如对年轻人来说解放双手是主要目标,而三口之家更希望拥有健康温馨的生活,对于精英人士却希望实现高品质的生活享受。 展开更多
关键词 用户体验 智能家居 卡萨帝 海尔 leader
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From a traditional brand to an international fashion leader:ERDOS
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作者 Zhong Mengxia 《China Textile》 2025年第4期37-39,共3页
When discussing iconic Chinese cashmere brands,ERDOS is alwaysat the center of the conversation.Once famous across China for its slogan,"ERDOS brings warmth to all,"the traditional brand has now embarked on ... When discussing iconic Chinese cashmere brands,ERDOS is alwaysat the center of the conversation.Once famous across China for its slogan,"ERDOS brings warmth to all,"the traditional brand has now embarked on a journey of moderniza-tion and stylish reinvention. 展开更多
关键词 MODERNIZATION international fashion leader iconic Chinese cashmere brands traditional brand stylish reinvention erdos
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Does artificial intelligence(AI)anxiety increase employees’deviant behavior toward the organization?The role of emotional exhaustion and leadership support
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作者 Chengcheng Sha Lin Wang Xiaolei Pan 《Journal of Psychology in Africa》 2025年第2期207-214,共8页
This study investigated the relationship between AI anxiety and deviant behavior,as well as the roles of emotional exhaustion and leader support in this context.The sample comprised 381 Chinese e-commerce employees(72... This study investigated the relationship between AI anxiety and deviant behavior,as well as the roles of emotional exhaustion and leader support in this context.The sample comprised 381 Chinese e-commerce employees(72.7%female,age range 21–36 years).The results of the Process model analysis indicate that AI anxiety significantly is associated with higher deviant behaviour.Emotional exhaustion partially mediates this relationship between AI anxiety and employee deviant behavior exacerbating deviant behaviour.Leader support moderates the AI anxiety effect on emotional exhaustion such that when leader support is low.AI anxiety is associated with higher emotional exhaustion among employees.By implication,high levels of leader support can alleviate AI anxiety of employees.Employer organizations should provide appropriate guidance when introducing AI technology to prevent AI anxiety and associated emotional exhaustion and deviant behavior. 展开更多
关键词 AI anxiety emotional exhaustion leader support deviant behavior
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Data-Driven Fault-Tolerant Bipartite Consensus Tracking for Multi-Agent Systems With a Non-Autonomous Leader
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作者 Yan Zhou Guanghui Wen +1 位作者 Jialing Zhou Tao Yang 《IEEE/CAA Journal of Automatica Sinica》 2025年第1期279-281,共3页
Dear Editor,This letter studies the bipartite consensus tracking problem for heterogeneous multi-agent systems with actuator faults and a leader's unknown time-varying control input. To handle such a problem, the ... Dear Editor,This letter studies the bipartite consensus tracking problem for heterogeneous multi-agent systems with actuator faults and a leader's unknown time-varying control input. To handle such a problem, the continuous fault-tolerant control protocol via observer design is developed. In addition, it is strictly proved that the multi-agent system driven by the designed controllers can still achieve bipartite consensus tracking after faults occur. 展开更多
关键词 fault tolerant actuator faults multi agent systems bipartite consensus tracking data driven bipartite consensus non autonomous leader observer design
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Haijia:Global leader in shuttleless loom industry
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《China Textile》 2025年第5期43-43,共1页
Founded in 1995,Qingdao Haijia Machinery Group Co.,Ltd(hereinafter refered to as Haijia)has become a global leader in shuttleless looms.With sales in 30 countries,Haijia has sold over 170,000 shuttleless looms worldwi... Founded in 1995,Qingdao Haijia Machinery Group Co.,Ltd(hereinafter refered to as Haijia)has become a global leader in shuttleless looms.With sales in 30 countries,Haijia has sold over 170,000 shuttleless looms worldwide,and has maintained a leading market share in water-jet looms for many consecutive years.The Group boasts three manufacturing plants and over ten marketing and service centers worldwide,employs nearly 600 people,and holds over 170 proprietary intellectual property rights.Haijia is a comprehensive enterprise integrating R&D,design,manufacturing,marketing,and after-sales service. 展开更多
关键词 shuttleless loom water jet loom manufacturing plants shuttleless looms shuttleless loomswith global leader marketing service centers intellectual property rights
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Observation and analysis of positive leader re-illumination in a 10 m ultra-high voltage transmission line gap under switching impulse voltages
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作者 Biao HUANG Xuan ZHOU +3 位作者 She WANG Chijie ZHUANG Rong ZENG Le DENG 《Plasma Science and Technology》 SCIE EI CAS CSCD 2024年第10期93-100,共8页
The leader propagation is one of the most important stages in long air gap discharge.The mechanism behind leader re-illumination remains unclear.In high humidity conditions(20.0–30.1 g/m^(3)),we have conducted experi... The leader propagation is one of the most important stages in long air gap discharge.The mechanism behind leader re-illumination remains unclear.In high humidity conditions(20.0–30.1 g/m^(3)),we have conducted experiments of long sparks in a 10 m ultra-high voltage(UHV)transmission line gap under switching impulse voltages.The positive leaders predominantly propagate discontinuously,with almost no significantly continuous propagation occurring.The leader channels are intensely luminous and each elongation segment is straight,with streamers resembling the“branch type”which differs from the“diffuse type”streamers at the front of continuous propagation leaders.The distribution of the propagation velocities is highly random(3.7–18.4 cm/μs),and the average velocity(9.2 cm/μs)significantly exceeds that of continuous propagation(1.5–2.0 cm/μs).Analysis suggests that the current-velocity models suitable for continuous leader propagation do not align well with the experimental data in re-illumination mode.Based on the discharge current waveforms and optical images,it is speculated that the newly elongated leader in re-illumination mode does not evolve gradually from the stem(about 1 cm)but rather evolves overall from a thermal channel much longer than stem. 展开更多
关键词 long air gap discharge positive leader re-illumination discontinuous leader propagation
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The Critical Role of Middle Leaders in Schools:Cultivating a Culture of Trust and Supporting Educational Reform
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作者 Xingyun Fang Jianli Wang 《Journal of Educational Theory and Management》 2024年第1期1-6,共6页
This research delves into the often-underappreciated role of middle leaders in educational organizations,highlighting their significance as the linchpins between senior leadership and classroom teachers.Utilizing qual... This research delves into the often-underappreciated role of middle leaders in educational organizations,highlighting their significance as the linchpins between senior leadership and classroom teachers.Utilizing qualitative research methods,the study investigates the multifaceted responsibilities,challenges,and contributions of middle leaders in schools.Findings indicate that middle leaders foster a culture of trust within the institution by providing mentorship and guidance to new teachers.They undertake substantial tasks,such as team coordination,grade direction,and student supervision,in addition to their teaching duties.Despite their pivotal role,middle leaders often face mounting pressures and heavy workloads.This research underscores the need to recognize and support middle leaders in educational settings,acknowledging their vital role in fostering cohesion and facilitating the implementation of educational reforms. 展开更多
关键词 Middle leaders Educational leadership Trust culture
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Image Recognition Model of Fraudulent Websites Based on Image Leader Decision and Inception-V3 Transfer Learning 被引量:1
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作者 Shengli Zhou Cheng Xu +3 位作者 Rui Xu Weijie Ding Chao Chen Xiaoyang Xu 《China Communications》 SCIE CSCD 2024年第1期215-227,共13页
The fraudulent website image is a vital information carrier for telecom fraud.The efficient and precise recognition of fraudulent website images is critical to combating and dealing with fraudulent websites.Current re... The fraudulent website image is a vital information carrier for telecom fraud.The efficient and precise recognition of fraudulent website images is critical to combating and dealing with fraudulent websites.Current research on image recognition of fraudulent websites is mainly carried out at the level of image feature extraction and similarity study,which have such disadvantages as difficulty in obtaining image data,insufficient image analysis,and single identification types.This study develops a model based on the entropy method for image leader decision and Inception-v3 transfer learning to address these disadvantages.The data processing part of the model uses a breadth search crawler to capture the image data.Then,the information in the images is evaluated with the entropy method,image weights are assigned,and the image leader is selected.In model training and prediction,the transfer learning of the Inception-v3 model is introduced into image recognition of fraudulent websites.Using selected image leaders to train the model,multiple types of fraudulent websites are identified with high accuracy.The experiment proves that this model has a superior accuracy in recognizing images on fraudulent websites compared to other current models. 展开更多
关键词 fraudulent website image leaders telecom fraud transfer learning
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How Group Leaders Build Stable Community Buying Groups:A Perspective Based on the Differential Mode of Association
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作者 SI Xiang 《Psychology Research》 2024年第1期30-35,共6页
Since 2016,community group buying has grown significantly in China,largely driven by its efficient logistics,supply chains,low prices,and convenience.This model has been further popularized during the COVID-19 pandemi... Since 2016,community group buying has grown significantly in China,largely driven by its efficient logistics,supply chains,low prices,and convenience.This model has been further popularized during the COVID-19 pandemic due to its effectiveness in meeting daily needs while minimizing human-to-human contact.A key component of this business model is the“group leaders”-influential individuals within a community responsible for managing group buying activities,which include order collection,supplier liaison,and goods distribution.Their primary task is to form and sustain a reliable community group buying consortium,a task that demands excellent organizational and interpersonal skills.This paper examines this phenomenon using the lens of the differential mode of association,a theoretical model explaining interpersonal relationships in traditional Chinese society.The research indicates that group leaders,through regular interaction with consumers,are able to alter their social network position,increase their influence,understand consumer needs,provide satisfying services,and enhance trust,thereby transforming consumers into loyal group buying participants.This transformation not only brings stability to group buying activities but also reinforces the community influence of group leaders,thus fostering the growth of community group buying. 展开更多
关键词 Community group buying China Group leaders The differential mode of association
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China’s Change through Future Leaders’Eyes
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作者 ZHOU LIN 《China Today》 2024年第3期41-41,共1页
Together for a Shared Future Compiled by Global Young Leaders Dialogue Price:RMB 118 Paperback,250 pages Published by Foreign Languages Press Together for a Shared Future is co-authored by 35 young people from 26 coun... Together for a Shared Future Compiled by Global Young Leaders Dialogue Price:RMB 118 Paperback,250 pages Published by Foreign Languages Press Together for a Shared Future is co-authored by 35 young people from 26 countries who participated in the project China Tour of the Global Young Leaders Dialogue(GYLD),an institutional platform for idea-sharing among young people from different countries. 展开更多
关键词 TOGETHER leader FUTURE
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缺乏位置信息的视觉移动机器人leader-following编队控制
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作者 沈尧高 于双和 黄进 《计算机应用与软件》 北大核心 2024年第2期73-79,共7页
针对视觉移动机器人编队在缺乏位置信息情况下的控制问题,提出一种基于视觉的leader-following编队反馈控制方法。该方法利用leader标志物特征点在follower摄像机像平面上的坐标信息设计了观测器,对leader与follower间的相对位置进行估... 针对视觉移动机器人编队在缺乏位置信息情况下的控制问题,提出一种基于视觉的leader-following编队反馈控制方法。该方法利用leader标志物特征点在follower摄像机像平面上的坐标信息设计了观测器,对leader与follower间的相对位置进行估计,基于相对位置估计量与它们速度的关系,设计出leader-following编队反馈控制器,通过Lyapunov理论证明了闭环系统的稳定性。仿真结果表明,该控制方法能有效解决缺乏位置信息情况下视觉移动机器人编队的控制问题。 展开更多
关键词 视觉移动机器人 leader-following编队 缺乏位置信息 相对位置 反馈控制
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An Analysis of the Development of Middle Leaders in Chinese Secondary Schools:The Role of the Principal
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作者 Qin Zhou 《Journal of Contemporary Educational Research》 2022年第10期98-108,共11页
Numerous studies conducted on educational leadership have generally emphasized the role of principal,whereas,research on middle leadership remains limited[1].The purpose of this paper is to explore and investigate the... Numerous studies conducted on educational leadership have generally emphasized the role of principal,whereas,research on middle leadership remains limited[1].The purpose of this paper is to explore and investigate the development of middle leadership and seeks to fill in the gap by providing the analysis from a Chinese context.The author found that middle leaders are positioning at a challenging role,in which they are required to take charge of responsibilities of both a leader and a teacher,and in the meantime,they also need to negotiate between the senior leader,the colleagues.and subordinates.Furthermore,personal factors such as self-awareness and resilience are discovered to be pivotal for middle-leadership development.Apart from that,the principal plays a critical role in establishing collaborative school culture that facilitates the development of middle leaders based on the influences from the school’s history,culture,and policies. 展开更多
关键词 Educational leadership Middle leadership leader Principal SELF-AWARENESS Resilience School culture Leading learning Trust Distributed leadership
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Optimizing the Leadership Styles and Establishing a New Teacher-Student Relationship
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作者 陈有 洪文静 《海外英语》 2014年第19期45-46,52,共3页
There're mainly two kinds of behaviors-Task Behaviors(TBs) and Relationship Behaviors(RBs) among the school leadership styles. TBs contribute to achieving the goals, while RBs help to promote the interpersonal rel... There're mainly two kinds of behaviors-Task Behaviors(TBs) and Relationship Behaviors(RBs) among the school leadership styles. TBs contribute to achieving the goals, while RBs help to promote the interpersonal relationships. However, different perceptions of social values and morals will have a great influence on establishing the good leader-teacher relationship and the teacher-student relationship, which is also no exception for the leadership styles. Thus, optimizing the leadership styles will enhance the leader-teacher relationship, and also benefit the teacher-student relationship. 展开更多
关键词 leaderSHIP STYLES leader-teacher RELATIONSHIP TEAC
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振动信号小波leaders多重分形特征提取及性能分析 被引量:5
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作者 李彦明 杜文辽 +1 位作者 叶鹏飞 刘成良 《机械工程学报》 EI CAS CSCD 北大核心 2013年第6期60-65,共6页
机械振动信号一般具有非线性、非平稳特性,多重分形特征是表示振动信号几何结构特征的一种重要手段。传统的多重分形特征计算方法计算量大,限制了多重分形特征的应用。小波leaders多重分形分析方法具有坚实的数学基础,且计算简便。针对... 机械振动信号一般具有非线性、非平稳特性,多重分形特征是表示振动信号几何结构特征的一种重要手段。传统的多重分形特征计算方法计算量大,限制了多重分形特征的应用。小波leaders多重分形分析方法具有坚实的数学基础,且计算简便。针对齿轮正常状态和点蚀故障状态,提出基于小波leaders的多重分形振动信号特征提取及表示方法,提出基于bootstrap技术的最优块长求解算法,并建立振动信号小波leaders多重分形特征的统计性能分析方法。研究结果表明,小波leaders多重分形特征能够很好反映振动信号的几何结构特征,基于块bootstrap方法能有效分析多重分形特征统计性能,为机械设备状态监控和故障诊断提供了一种有效的选择。 展开更多
关键词 小波leaders 多重分形 块bootstrap 性能分析 故障诊断
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一种新的基于粗糙集的leader聚类算法 被引量:4
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作者 张琼 张莹 +2 位作者 白清源 谢丽聪 谢伙生 《计算机科学》 CSCD 北大核心 2008年第3期177-179,共3页
传统聚类方法将对象严格地划分到某一类,但很多时候边界对象不能被严格地划分。粗糙集用上近似集和下近似集表示一个类,对这种边界不确定的处理非常有效,典型算法有基于粗糙集的k-means聚类算法和基于粗糙集的leader聚类算法。本文针对R... 传统聚类方法将对象严格地划分到某一类,但很多时候边界对象不能被严格地划分。粗糙集用上近似集和下近似集表示一个类,对这种边界不确定的处理非常有效,典型算法有基于粗糙集的k-means聚类算法和基于粗糙集的leader聚类算法。本文针对RFA(Rough Fuzzy Approach)算法存在的不足,提出了一种新的基于粗糙集的leader聚类算法(NRL,Novel Rough-based Leader)。其基本思想是首先数据项由于与其最近类中心的距离不同,分别被划分到leader集或者supporting leader集,然后对leader集和supporting leader集进行标号,得到聚类结果。实验结果表明NRL算法非常有效。 展开更多
关键词 聚类 粗糙集 K-MEANS算法 leader算法
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基于佳点集与Leader方法的改进K-means聚类算法 被引量:3
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作者 张燕平 张娟 +2 位作者 何成刚 褚维翠 张利娜 《计算机应用》 CSCD 北大核心 2011年第5期1359-1362,1373,共5页
针对传统K-means算法对初始点敏感的问题,采用数论中的佳点集理论结合Leader方法对K-means聚类算法加以改进,启发式地生成样本初始中心。根据两者不同的结合方式,所提算法分别称为KLG和KGL。佳点集理论能够产生比随机选取点更好的点,Lea... 针对传统K-means算法对初始点敏感的问题,采用数论中的佳点集理论结合Leader方法对K-means聚类算法加以改进,启发式地生成样本初始中心。根据两者不同的结合方式,所提算法分别称为KLG和KGL。佳点集理论能够产生比随机选取点更好的点,Leader方法则能反映数据对象本身的分布特性。结合佳点集理论和Leader方法各自的优点,能获得优化的初始中心。在UCI数据集上的实验表明,KLG算法和KGL算法所得到的结果均好于传统的和其他一些初始化的K-means算法。 展开更多
关键词 K-MEANS算法 佳点集 leader方法
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基于Leader的K均值改进算法 被引量:3
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作者 张琼 张莹 +2 位作者 白清源 谢丽聪 谢伙生 《福州大学学报(自然科学版)》 CAS CSCD 北大核心 2008年第4期493-496,共4页
研究了K均值算法中初始聚类中心的选择对算法本身聚类精度及效率的影响,并提出了改进的算法(LK算法,Leader+K-means).LK算法中的初始聚类中心选择不是随机的,而是利用Leader算法得到若干个初始类中心,然后选择包含数据项最多的k个类中心... 研究了K均值算法中初始聚类中心的选择对算法本身聚类精度及效率的影响,并提出了改进的算法(LK算法,Leader+K-means).LK算法中的初始聚类中心选择不是随机的,而是利用Leader算法得到若干个初始类中心,然后选择包含数据项最多的k个类中心,作为K均值算法的初始类中心.实验结果表明,LK算法在聚类结果的稳定性和正确率方面都是有效可行的. 展开更多
关键词 聚类 K均值算法 leader算法
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基于Leader-follower与人工势场的多移动机器人编队控制 被引量:5
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作者 张凤 孙哲 刘美菊 《沈阳建筑大学学报(自然科学版)》 CAS 北大核心 2010年第4期803-807,共5页
目的提出一种基于Leader-follower法和人工势场法相结合的多移动机器人编队控制方法,从而克服传统Leader-follower法中由微分方程确定的控制率无法将队形控制与避障统一的缺点.方法确定关于参数l和φ的人工势场函数,通过控制参数l和φ,... 目的提出一种基于Leader-follower法和人工势场法相结合的多移动机器人编队控制方法,从而克服传统Leader-follower法中由微分方程确定的控制率无法将队形控制与避障统一的缺点.方法确定关于参数l和φ的人工势场函数,通过控制参数l和φ,使多移动机器人保持预定队形;机器人follower通过主动避障方法躲避障碍物,确定一个总的人工势场控制队形和避障.结果算法能使多移动机器人系统成功地进行编队和避障.结论通过仿真试验,机器人系统能够顺利通过狭窄通道,躲避静态障碍物和动态障碍物,并在避障后恢复队形,顺利到达目标,算法简单,从而验证了算法的有效性. 展开更多
关键词 多移动机器人 编队控制 人工势场法 leader—follower法
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采用Leader-follower和模糊反馈机制的机器鱼队形控制 被引量:4
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作者 单素素 纪志坚 翟海川 《智能系统学报》 CSCD 北大核心 2013年第3期247-253,共7页
在Leader-follower框架下的多机器鱼系统队形控制中,针对Leader和Follower相对独立及落后机器鱼离队等问题,在传统的Leader-follower队形控制算法中引入模糊反馈控制器进行反馈调节,使得领航机器鱼Leader能定时检查Follower的位置,将多... 在Leader-follower框架下的多机器鱼系统队形控制中,针对Leader和Follower相对独立及落后机器鱼离队等问题,在传统的Leader-follower队形控制算法中引入模糊反馈控制器进行反馈调节,使得领航机器鱼Leader能定时检查Follower的位置,将多机器鱼系统的队形控制问题转化为具有反馈调节的Follower跟踪Leader的位置和方向的问题,以增强多机器鱼队形控制的稳定性,更好地协同作业完成任务.仿真试验验证了所提出的方法能较好地实现多机器鱼系统的队形控制. 展开更多
关键词 多机器鱼系统 队形控制 leader—follower 模糊反馈控制器 反馈调节 协同作业
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