Observation and analysis of positive leader re-illumination in a 10 m ultra-high voltage transmission line gap under switching impulse voltages

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.

Image Recognition Model of Fraudulent Websites Based on Image Leader Decision and Inception-V3 Transfer Learning

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.

China’s Change through Future Leaders’Eyes

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.

How Group Leaders Build Stable Community Buying Groups:A Perspective Based on the Differential Mode of Association

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.

The Critical Role of Middle Leaders in Schools:Cultivating a Culture of Trust and Supporting Educational Reform

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.

缺乏位置信息的视觉移动机器人leader-following编队控制

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。

Leader-following多自主体系统时变编队跟踪控制

考虑时变时延,研究了高阶leader-following多自主体系统的分布式时变编队跟踪控制问题.针对连续高阶多自主体系统,设计了基于观测器的时变编队跟踪控制协议,通过状态变换,将系统的时变编队跟踪控制问题,转变为误差系统的稳定性问题.然后利用图论及李雅普诺夫稳定定理,研究了系统实现时变编队跟踪控制的充分条件,并且指出时变编队参考函数与时变时延无关.最后,数据仿真结果证明了所设计的协议能使follower自主体实现时变编队,并且跟踪leader自主体的轨迹.

A General Self-Sacrifice Template Strategy to 3D Heteroatom-Doped Macroporous Carbon for High-Performance Potassium-Ion Hybrid Capacitors

Potassium-ion hybrid capacitors(PIHCs)tactfully combining capacitor-type cathode with battery-type anode have recently attracted increasing attentions due to their advantages of decent energy density,high power density,and low cost;the mismatches of capacity and kinetics between capacitor-type cathode and battery-type anode in PIHCs yet hinder their overall performance output.Herein,based on prediction of density functional theory calculations,we find Se/N co-doped porous carbon is a promising candidate for K+storage and thus develop a simple and universal self-sacrifice template method to fabricate Se and N co-doped three-dimensional(3D)macroporous carbon(Se/N-3DMpC),which features favorable properties of connective hier-archical pores,expanded interlayer structure,and rich activity site for boosting pseudocapacitive activity and kinetics toward K^(+)storage anode and enhancing capacitance performance for the reversible anion adsorption/desorption cath-ode.As expected,the as-assembled PIHCs full cell with a working voltage as high as 4.0 V delivers a high energy density of 186 Wh kg^(−1) and a power output of 8100 W kg^(−1) as well as excellent long service life.The proof-of-concept PIHCs with excellent performance open a new avenue for the development and application of high-performance hybrid capacitors.

The Era of Heydar Aliyev,the Great Leader of the Azerbaijani People

For the understanding of geniuses,historical figures,artists,and every individual as a whole,it is necessary to study his era,because various global and even the smallest(subconscious)events that take place in all eras have their influence on the human consciousness from the womb to the grave.In this existence(consciousness),the events of the era,which are infinite in scale,are transformed into a treasure of thought(archive).This treasure,which is in the essence of“infinity”(∞-),is enriched step by step from simple knowledge to fundamental scientific knowledge,thus shaping his worldview through countless events.From this point of view,era and worldview are phenomena that are in unity and one determines the other.In other words,the highest determination of philosophy-when explaining the concept of time with questions,the idea covered by it,man,nature,etc.,answers related to the worldview factor are given in the contents and essences.Or,on the contrary,the understanding of the worldview of any person acquires an objective-logical value with the characteristics of his era.Because of its position,it is worth noting that every era leaves its mark on history with“extraordinary”important memory phenomena that change the world and hold the whole world and mankind under its charm,which is also considered as globalization in the world with the current terminology(globalization in the old dictionary).Also,each period has its own historical content and the fact that the most global event,including the genius,is named in honor of the person of the time,contains the importance of this or that period,as well as the historical stage,Stone Age,Antiquity,Renaissance,Enlightenment-Modernism,“Golden Age”,Critical Socialism,etc.A feature of the periods is related to the human factor.There had never been a period in history that did not produce its own geniuses and historical personalities.It is not even an exception to the eras related to the names of geniuses and historical figures.For example,the 11th-19th centuries are called the“Dark Ages”or the Homeric era,as well as Homeric Greece.In addition to Shakespeare era,Golden era,Voltaire(Voltaire era),etc.,there are periods of people who left a mark on history with negative thoughts,Stalin era,Adolf Hitler era,etc.There are still geniuses;they are considered as the Man of the century,the hero of the century.As an example of such historical figures,we can show“people”of different centuries,for example,Socrates,Aristotle,Galileo Galilei,Confucius,and countless geniuses,including K.Marx,V.I.Lenin,A.Einstein,M.K.Atatürk,M.Gandhi,etc.;when their names are mentioned,this or that period comes to mind.In this regard,the 20th century is no exception.He entered the history of world politics as an outstanding statesman in the 20th century,who left his mark with the deep content of the events unfolding in history,his successes,and achievements,as well as his complex and even tragic days.In this article,we will talk about the“era”of Heydar Aliyev,the great leader of the Azerbaijani people,one of the geniuses of the 20th century,a powerful state builder,outstanding national leader-the life of his birth,80 years of life service to his people with honor.In our opinion,our analyses,facts,and evaluations will add an important page to the world scientific to world scientific thought and political-philosophical history.

角色演变视角下辟谣信息对社交媒体意见领袖形成的影响——基于舆论领导法则

[目的/意义]探究辟谣信息对社交媒体用户的影响,特别是对意见领袖形成现象机制的挖掘。构建社交媒体用户角色演变行为模型,研究人员可以更好地了解意见领袖的形成原因,刻画辟谣信息对社交媒体用户的作用机制,有助于对参与辟谣的“准意见领袖”进行合理引导,以提高社交媒体舆情管理的效率和准确性。[方法/过程]首先,对微博社交媒体平台中的特定主题事件进行跟踪,识别并筛选出“新生意见领袖”群体,并利用质性访谈对此群体进行深度访谈。然后,基于程序化扎根理论方法,利用NVivo 12软件进行扎根编码构建模型,并通过理论饱和度检验验证模型的完整性。最后,对社交媒体用户角色演变的原因进行深入分析和探讨。[结果/结论]在辟谣信息作用下,个体主观因素、社会环境因素和辟谣信息因素对一般用户向新生意见领袖的演变行为产生重要影响,其中个体主观因素在辟谣信息的作用下对意见领袖形成的影响更加显著,自我认知清晰、高情绪需求且情绪稳定的个体更容易成为影响力持久的意见领袖;社会公众认可、实质性奖励和政策法律支持共同构成社会环境因素,是意见领袖形成的重要保障;辟谣信息因素中的辟谣信息热度、可信度和发布质量等方面都会直接影响“潜在意见领袖”用户群体对辟谣事件的把握,进而干预其参与辟谣的决定。

基于备选Leader的分布式选举算法的研究

在传统Raft选举Leader过程中,每个节点都有可能成为Leader。但也会引发选举冲突,从而进行多轮选举;一些性能较低的节点也可能成为Leader,很快再次下线触发新的选举。这些行为会让选举的效率大大降低。我们可以事先指定一批性能较高的服务器做为Leader的备选节点,按照优先级别进行排序。在某个Follower连接不上leader的时候,可以按照备选Leader节点 的优先级别排序进行询问看是否可以连接。备选Leader节点如果收到n/2+1的询问时,就可以升级为leader。如果leader发现自身连接少于n/2+1可以降为Follower。事先指定备选Leader可以在选举leader的过程中减少选举冲突,提高选举效率,增加系统稳定性。

上下级工作与私人关系对员工越轨创新行为的差异性研究

在整合人情-面子理论和资源保存理论的基础上,通过Bootstrapping和RWA-Web两种方法对7家企业的257份多时点追踪调查数据进行分析,比较领导-成员交换关系和上下级私人关系影响员工越轨创新行为的直接效应和中介效应的差异。研究结果表明:领导-成员交换关系正向影响员工越轨创新行为;心理资本分别在领导-成员交换关系或上下级私人关系与员工越轨创新行为间发挥部分或完全中介作用;两类关系对员工越轨创新行为的积极影响存在差异,领导-成员交换关系的效应更强。

努力构建党内全过程监督体系

长期以来,我们重视自上而下的监督,不够重视自下而上的监督,没有构建起全过程监督体系。造成领导干部特别是“一把手”贪腐问题屡禁不止。要解决这个问题,必须构建并不断完善党内全过程监督体系。全过程监督体系,坚持党中央的集中统一领导,坚持纪委监委专门监督责任,坚持民主监督与集中监督的有机结合,坚持自上而下监督与自下而上监督相结合。当务之急,是要建立健全党内全过程监督制度,进一步明确监督主体、监督对象、监督体制机制。发挥同级党组织相互监督的作用。改进自下而上的民主监督。积极推进对“一把手”和领导班子的监督。加强领导班子成员之间相互监督。加强各级党委对监督工作的领导。强化对干部管理工作的监督,完善干部选举和任用工作监督、“一把手”和领导班子决策监督。加强对党内全过程监督体系构建的领导与管理。

基于图和流体扰动算法的多无人车编队及避障研究

为解决多无人车编队在存在运动目标、移动威胁与突发威胁等多种情况的复杂环境中的避障问题,设计了一种基于刚性图论和流体扰动算法的多无人车编队避障控制算法。首先,针对编队控制问题,采用图论方法描述多无人车之间的协同关系,利用无人车之间的距离约束,基于反步控制理论设计领航-跟随编队控制器。李雅普诺夫分析表明,期望的编队形状是渐近稳定的。其次,针对复杂动态障碍物环境下的编队避障问题,设计了基于流体扰动算法的避障路径规划方法,由领航无人车规划出编队的行驶路径,实现编队的整体避障。最后,基于MATLAB的仿真结果验证了所提算法的有效性。

ChatGPT网络舆情特征多维度演化分析

[研究目的]ChatGPT在世界范围内刷爆网络,引起全球的关注和热议。互联网上针对ChatGPT产生多种不同的声音,从广泛社会舆论视角探究ChatGPT网络舆情特征的多维度演化规律,有利于为新兴科技类产品的舆情研判和利益相关者决策提供支撑。[研究方法]基于传播学视角构建了ChatGPT网络舆情特征多维度演化分析框架,以微博为数据获取平台,使用意见领袖影响力、LDA主题挖掘以及SnowNLP情感分析方法对ChatGPT网络舆情多维度特征演化展开分析。[研究结论]ChatGPT网络舆情发展分为缓慢萌发期、火爆出圈期、波动下降期以及稳定发展期四个阶段;初期意见领袖中包含科技科普博主、权威媒体以及社会公众人物,后期自媒体和名人的意见领袖作用逐渐被权威媒体和网络平台媒体所取代;热点主题数量增加,且主题不断细化和深化。公众对ChatGPT的情感以积极乐观为主。ChatGPT网络舆情的情感倾向与主题演变趋势相一致。

领导员工互动公平对团队创造力的影响机制:一个被调节的中介模型

领导员工互动公平作为一种组织公平,反映团队成员对自身与领导沟通质量的感知,能够有效增强团队创造力,维持企业核心竞争优势,促进企业繁荣稳定发展。基于102个知识型团队样本,以团队内竞争为中介变量,以权力距离导向为调节变量,从直接和间接传导机制两个维度阐释领导员工互动公平对团队创造力的内在影响机理,研究发现:①领导员工互动公平与团队创造力正相关;②团队内发展性竞争在领导员工互动公平与团队创造力关系中发挥完全中介作用;③权力距离导向正向调节领导员工互动公平与团队发展性竞争的关系、负向调节领导员工互动公平与团队过度性竞争的关系;④权力距离导向正向调节团队内发展性竞争在领导员工互动公平与团队创造力关系间的中介作用。

公立医院“一把手”和领导班子政治监督探析

医药领域腐败问题集中整治工作事关健康中国战略实施和人民群众切身利益。通过分析公立医院查处案件中“一把手”和领导班子违纪违法行为,发现其背后政治监督存在认识有“偏差”、合力有“欠缺”、能力有“短板”、自我监督有“制约”等问题。为加强公立医院党的建设,纠正行业不正之风,推进长效机制建设,探索破解政治监督难题,本文聚焦“关键少数”,从“教育、制度、监督、执纪、问责”5个层面提出构建公立医院“一把手”和领导班子政治监督体系的对策建议。

企业领导道歉负向影响员工反生产行为机制探究

企业员工由于遭遇领导冒犯所引发的反生产行为因领导道歉改变其负面预期而有所减少。笔者基于资源保存理论,在构建了一个企业领导道歉影响员工反生产行为机制模型的基础上,以分别在两个时间点收集的388份有效追踪数据,运用Mplus软件实证检验了企业领导道歉与员工反生产行为的关系及其变化。检验结果证实:企业领导道歉对员工反生产行为具有显著的负向影响;领导认同和情感承诺分别在领导道歉与员工反生产行为关系间发挥中介作用;领导虚伪感知既负向调节领导道歉对领导认同的影响,也负向调节领导认同在领导道歉与员工反生产行为间的中介作用。本文通过将领导认同、情感承诺和领导虚伪感知等变量尝试性地引入到企业领导道歉影响员工反生产行为模型之中并付诸实证检验,拓展了资源保存理论的应用边际,揭示了企业经营中领导道歉与员工反生产行为二者之间的内在关联,丰富了有关企业管理中领导行为方面的现有文献,研究结论可以为企业领导处理内部人际关系和提高企业治理水平提供理论依据。

中央企业产业链链长协作治理机制与策略:以中国移动为例

“链长制”是中国特色产业链协作治理的最新实践,中央企业产业链链长则是行政、市场、社群三种治理机制在产业链直接治理层面互嵌互补的重要载体。既有研究强调“链长制”是有效市场和有为政府的结合,却忽视了社群治理以及三种治理机制交互的协作治理对于矫正产业链协调失灵问题的重要性。基于此,本文从协作治理视角出发,探讨央企产业链链长的协作治理目标和机制,并对移动信息现代产业链链长协作治理的具体手段、体系建设和机制组合进行了深入分析,最后从优化顶层制度设计、优化央企考核方式、加快产业链综合信息平台建设、建立需求采购联盟、强化共性技术研发、优化人才激励政策等方面提出提高央企链长治理效能的建议。

威权领导行为通过降低下属亲近意愿引发领导孤独感

孤独体验已成为职场普遍存在的现象,已有研究大多聚焦员工而较少关注领导群体的孤独感。结合威权领导力和孤独感相关文献,探讨威权领导行为对领导孤独感的影响机制,并探索团队权力距离氛围的调节效应。一项预研究、两项情景实验和一项三时点问卷调查研究发现:威权领导行为负向影响下属亲近意愿,进而引发领导孤独感;团队权力距离氛围削弱威权领导行为对下属亲近意愿的负向效应,并调节威权领导行为通过下属亲近意愿对领导孤独感的中介效应。