Cluster,

摘要： In this paper, a routing protocol for wireless sensor network, baptized energy based protocol (EBP) is proposed. Wireless sensor network presents many challenges and constraints, and one of the major constraints is the routing problem. Due to the limited energy of sensor nodes, routing in this type of network shall perform efficiently to maximize the network lifetime. One of the proposed algorithms is the directional source aware routing protocol (DSAP) which, after simulation, showed a lot of limitations and drawbacks. The modified directional source aware routing protocol (MDSAP) was proposed by the authors of this paper to address some of the DSAP’s limitations but remains limited to a fixed topology, fixed source and stationary nodes. So EBP is proposed and operated under different scenarios and showed, after its simulation using TinyOS, many advantages in terms of load balancing, free looping, minimizing packet error rate and maximizing network lifetime.

摘要： The coronavirus disease 2019(COVID-19)pandemic is the biggest pandemic of its kind in modern times,and has been running for over two years.It has grown exponentially from a cluster of unexplained cases of pneumonia in December 2019 to a full-grown pandemic[1].With a sharp ascending limb in its initial stages,it was announced by the World Health Organization as public health emergency of international concern on January 30,2020,subsequently acquiring the definition of a pandemic on March 11,2020.

摘要： Rational design and synthesis of low-cost trifunctional electrocatalysts with improved stability and superior electrocatalytic activity for oxygen reduction reaction(ORR),oxygen evolution reaction(OER),and hydrogen evolution reaction(HER) are highly desirable but remain as the bottlenecks at the current state of technology.In this paper,the cobalt-iron(Co-Fe) composite supported on nitrogen-doped carbon nanotubes(CoFe composite/NCNTs) is synthesized.The intrinsic OER and HER catalytic activities of this CoFe composite/NCNTs composite are significantly improved with palladium(Pd) nanocluster decoration [Pd-coated(CoFe composite/NCNTs)].The as-prepared Pd-coated(CoFe composite/NCNTs) catalyst exhibits excellent trifunctional electrocatalytic activity and stability due to the interfacial coupling between Pd and(CoFe composite/NCNTs).This catalyst is successfully employed in the water electrolysis cell as both OER and HER electrode catalysts,flexible rechargeable Zn-air battery as the bifunctional ORR and OER electrode catalyst.The cell voltage of this catalyst-coated electrodes requires only 1.60 V to achieve 10 mA cm^(-2) current density for water electrolysis cell,which is comparable to and even better than that of Pt/C and Ir/C based cell.The primary Zn-air battery using this catalyst shows a constant high open-circuit voltage(OCV) of 1.47 V and a maximum power density of 261 mW cm^(-2) in the flooded mode configuration.Most importantly,a flexible Zn-air battery with this catalyst runs very smoothly without a change in voltage gap during flat,bending,and twisting positions.

摘要： C_(2)H_(2)semi-hydrogenation has been widely applied in industry to eliminate trace C_(2)H_(2)from C_(2)H_(4)feed.C_(2)H_(2)semi-hydrogenation to C_(2)H_(4)on a series of the newly designed catalysts,graphdiyne(GDY)as a new carbon allotrope supported different sizes of Pd_(x)M_(y)clusters(Pd_(x)M_(y)/GDY,M=Cu,Ag,Au,Ni;x+y=1-3),were studied using DFT calculations.The results found that C_(2)H_(2)semi-hydrogenation to C_(2)H_(4)on Pd_(x)M_(y)/GDY catalysts exhibits that both the activity and selectivity greatly depend on the composition and size of Pd_(x)M_(y)/GDY catalysts.Surprisingly,our results for the first time discovered the Pd_(1)/GDY catalyst with GDY supported the single atom Pd that presents the best selectivity and activity toward C_(2)H_(4)formation compared to the previously reported catalysts so far in C_(2)H_(2)semi-hydrogenation.This study would provide a theoretical clue for designing and screening out the potential catalysts with GDY supported small sizes of Pd_(x)M_(y)and other metal clusters in C_(2)H_(2)hydrogenation.

摘要： With their respective strengths and advantages, Greater Bay Area cities together make it an unmatched economic cluster China’s fastest growing economic cluster-the Guangdong-Hong Kong-Macao Greater Bay Area(GBA)-is a dynamic industrial and technological center of more than 70 million people(100 million expected by 2035) with a total GDP of $2.01 trillion(2021).

摘要： Three years after the State Council of China issued the Outline Development Plan for the Guangdong-Hong KongMacao Greater Bay Area, the most dynamic metropolis cluster in China has taken on a new look, with greater development potential, greater economic aggregation, and greater economic strength.

摘要： Dear editor,Neural networks (NNs) and fuzzy systems are commonly used computational intelligence techniques, each with their own merits in terms of applications. The integration of NNs and fuzzy systems, which leads to a hybrid framework known as neuro-fuzzy systems, inherits the useful properties of its constituents:the learning power of an NN and the knowledge representation of a fuzzy inference system。

摘要： The construction of inorganic porous frameworks from discrete polyoxometalate(POM)units is a major research challenge.Herein,a three-dimensional(3D)all-inorganic porous structure{Mo_(154)}_n that consists of classic Mo_(154)rings connected by Mo–O–Mo covalent bonds was synthesized.Interestingly,the proton conductivity of the 3D-{Mo_(154)}_n framework is 1.1×10^(-2)S cm^(-1)at 22°Cand 100%relative humidity(RH),which is one of the highest proton conductivities reported thus far for POM-based conductive materials.Compared to the discrete{Mo_(154)}cluster and 1D-{Mo_(154)}_n,the enhanced conductivity of 3D-{Mo_(154)}_n suggests that assembling POM-based all-inorganic porous frameworks is a promising method for designing proton-conductive materials.

摘要： BACKGROUND The onset symptoms of people infected by Chlamydia psittaci can mimic the coronavirus disease 2019(COVID-19).However,the differences in laboratory tests and imaging features between psittacosis and COVID-19 remain unknown.AIM To better understand the two diseases and then make an early diagnosis and treatment.METHODS Six patients from two institutions confirmed as psittacosis by high-throughput genetic testing and 31 patients confirmed as COVID-19 were retrospectively included.The epidemiology,clinical characteristics,laboratory tests and computed tomography(CT)imaging features were collected and compared between the two groups.The follow-up CT imaging findings of patients with psittacosis were also investigated.RESULTS The white blood cell count(WBC),neutrophil count and calcium were more likely to be decreased in patients with COVID-19 but were increased in patients with psittacosis(all P=0.000).Lymphocyte count and platelet count were higher in patients with psittacosis than in those with COVID-19(P=0.044,P=0.035,respectively).Lesions in patients with psittacosis were more likely to be unilateral(P=0.001),involve fewer lung lobes(P=0.006)and have pleural effusions(P=0.002).Vascular enlargement was more common in patients with COVID-19(P=0.003).Consolidation in lung CT images was absorbed in all 6 patients.CONCLUSION Psittacosis has the potential for human-to-human transmission.Patients with psittacosis present increased WBC count and neutrophil count and have specific CT imaging findings,including unilateral distribution,less involvement of lung lobes and pleural effusions,which might help us to differentiate it from COVID-19.

摘要： Wireless Sensor Networks(WSNs)are an integral part of the Internet of Things(IoT)and are widely used in a plethora of applications.Typically,sensor networks operate in harsh environments where human intervention is often restricted,which makes battery replacement for sensor nodes impractical.Node failure due to battery drainage or harsh environmental conditions poses serious challenges to the connectivity of the network.Without a connectivity restoration mechanism,node failures ultimately lead to a network partition,which affects the basic function of the sensor network.Therefore,the research community actively concentrates on addressing and solving the challenges associated with connectivity restoration in sensor networks.Since energy is a scarce resource in sensor networks,it becomes the focus of research,and researchers strive to propose new solutions that are energy efficient.The common issue that is well studied and considered is how to increase the network’s life span by solving the node failure problem and achieving efficient energy utilization.This paper introduces a Clusterbased Node Recovery(CNR)connectivity restoration mechanism based on the concept of clustering.Clustering is a well-known mechanism in sensor networks,and it is known for its energy-efficient operation and scalability.The proposed technique utilizes a distributed cluster-based approach to identify the failed nodes,while Cluster Heads(CHs)play a significant role in the restoration of connectivity.Extensive simulations were conducted to evaluate the performance of the proposed technique and compare it with the existing techniques.The simulation results show that the proposed technique efficiently addresses node failure and restores connectivity by moving fewer nodes than other existing connectivity restoration mechanisms.The proposed mechanism also yields an improved field coverage as well as a lesser number of packets exchanged as compared to existing state-of-the-art mechanisms.

摘要： A novel algorithm that based on cluster to the localization of nodes in wireless sensor networks is proposed in this paper. We use this algorithm to monitor the localization of the object nodes. From the angle of error analysis, we discuss all the factors that impact the precision, and propose a scheme to restrain the transmission error and cumulating error. To some node that can't obtain its position on account of unreasonable distributing, we design effective approach to identify and localize them, so to improve the cover ratio of the nodes in wireless sensor networks.

摘要： 新一代气象通信系统正在业务运行，在系统构建中采用了大量WEB开发技术、LINUX技术、网络技术。文章重点选择部分技术进行了论述说明。在系统长时间业务运行中也总结了一些新增报类常用的配置维护方法。任何一个系统都不会是至善完美的，当然该系统也是。在系统长时间的不间断运行中， 也发现了在连续几个月运行后系统会出现过访问速度变慢的异常情况。文章给出了经过不断调试摸索找到的维护处理解决方法。

摘要： 新一代气象通信系统正在业务运行，在系统构建中采用了大量WEB开发技术、LINUX技术、网络技术。文章重点选择部分技术进行了论述说明。在系统长时间业务运行中也总结了一些新增报类常用的配置维护方法。任何一个系统都不会是至善完美的，当然该系统也是。在系统长时间的不间断运行中， 也发现了在连续几个月运行后系统会出现过访问速度变慢的异常情况。文章给出了经过不断调试摸索找到的维护处理解决方法。

摘要： 新一代气象通信系统正在业务运行，在系统构建中采用了大量WEB开发技术、LINUX技术、网络技术。文章重点选择部分技术进行了论述说明。在系统长时间业务运行中也总结了一些新增报类常用的配置维护方法。任何一个系统都不会是至善完美的，当然该系统也是。在系统长时间的不间断运行中， 也发现了在连续几个月运行后系统会出现过访问速度变慢的异常情况。文章给出了经过不断调试摸索找到的维护处理解决方法。

摘要： 新一代气象通信系统正在业务运行，在系统构建中采用了大量WEB开发技术、LINUX技术、网络技术。文章重点选择部分技术进行了论述说明。在系统长时间业务运行中也总结了一些新增报类常用的配置维护方法。任何一个系统都不会是至善完美的，当然该系统也是。在系统长时间的不间断运行中， 也发现了在连续几个月运行后系统会出现过访问速度变慢的异常情况。文章给出了经过不断调试摸索找到的维护处理解决方法。

摘要： 新一代气象通信系统正在业务运行，在系统构建中采用了大量WEB开发技术、LINUX技术、网络技术。文章重点选择部分技术进行了论述说明。在系统长时间业务运行中也总结了一些新增报类常用的配置维护方法。任何一个系统都不会是至善完美的，当然该系统也是。在系统长时间的不间断运行中， 也发现了在连续几个月运行后系统会出现过访问速度变慢的异常情况。文章给出了经过不断调试摸索找到的维护处理解决方法。

摘要： 新一代气象通信系统正在业务运行，在系统构建中采用了大量WEB开发技术、LINUX技术、网络技术。文章重点选择部分技术进行了论述说明。在系统长时间业务运行中也总结了一些新增报类常用的配置维护方法。任何一个系统都不会是至善完美的，当然该系统也是。在系统长时间的不间断运行中， 也发现了在连续几个月运行后系统会出现过访问速度变慢的异常情况。文章给出了经过不断调试摸索找到的维护处理解决方法。

摘要： 欧空局最重要的日地科学项目，用于地球磁层等离子体过程研究Cluster计划， 从提邮到目前历时18年。其头二颗卫星已于今年7月16日发射成功，别外二颗卫星也将于今年8月9日发射。中国辰兴院士提了的“双星”计划正在立项。由于双星计划将Cluster利用卫星的多台探测仪器，了解Cluster一星的数据管理地“双星”计划的设计是十分重要的。该文对Cluster卫星数据管理系统的构成，数据处理模式，遥测数据帧结构，电气接口规定，对探测仪器的服务信号等作了简要介绍，并对这一系统的优缺点作了分析。

摘要： 欧空局最重要的日地科学项目，用于地球磁层等离子体过程研究Cluster计划， 从提邮到目前历时18年。其头二颗卫星已于今年7月16日发射成功，别外二颗卫星也将于今年8月9日发射。中国辰兴院士提了的“双星”计划正在立项。由于双星计划将Cluster利用卫星的多台探测仪器，了解Cluster一星的数据管理地“双星”计划的设计是十分重要的。该文对Cluster卫星数据管理系统的构成，数据处理模式，遥测数据帧结构，电气接口规定，对探测仪器的服务信号等作了简要介绍，并对这一系统的优缺点作了分析。

摘要： 欧空局最重要的日地科学项目，用于地球磁层等离子体过程研究Cluster计划， 从提邮到目前历时18年。其头二颗卫星已于今年7月16日发射成功，别外二颗卫星也将于今年8月9日发射。中国辰兴院士提了的“双星”计划正在立项。由于双星计划将Cluster利用卫星的多台探测仪器，了解Cluster一星的数据管理地“双星”计划的设计是十分重要的。该文对Cluster卫星数据管理系统的构成，数据处理模式，遥测数据帧结构，电气接口规定，对探测仪器的服务信号等作了简要介绍，并对这一系统的优缺点作了分析。

摘要： 本发明公开了一种基于四比特Cluster态的远距离隐形传态方法，网络终端用户Alice与Bob，通过中间节点的帮助，完成网络终端Alice与另一终端用户Bob之间的通信。该方法包含四个步骤：(1)终端用户Alice，Bob与中间节点Li(i＝1,2,3...p)共享四比特最大纠缠Cluster态，建立终端用户Alice、Bob与中间节点Li(i＝1,2,3...p)量子纠缠信道；(2)调制与测量，终端用户Alice与中间节点Li对相应的粒子执行CZ操作，并且中间节点对手中的粒子执行Bell测量，宣布测量结果；(3)终端用户Alice/Bob根据中间节点的Bell测量结果，通过幺正操作与另一终端用户Bob/Alice之间建立直接量子信道；(4)根据传送信息模式的不同，终端用户Alice与Bob根据对方的Bell测量结果，选择对应的恢复操作，实现双方通信。

摘要： 本发明公开了基于Spectral Clustering空间轨迹的聚类算法，包括利用摄像机对道路进行视频图像采集，对视频图像中的每一帧图像中的所有运动目标采用ORB算法提取特征点，然后利用基于双向加权可逆性约束的KLT跟踪算法对特征点进行跟踪，得到所有运动目标的多条运动轨迹以及每条运动轨迹上每个轨迹点在图像坐标系中的坐标值；利用刚体运动约束对所有运动目标的n条运动轨迹构建相似矩阵进行谱聚类，得到不同类别的运动轨迹；对不同类别的运动轨迹进行类间合并，得到类间合并后的运动轨迹；本发明所提到的方法不受工程应用上各类环境的影响和限制，并且易于实现，能有效的对车辆进行实时精确的检测，因此具有很广的应用前景。

摘要： 本发明公开了一种自动恢复掉电的MariaDB Galera Cluster的方法，MariaDB Galera Cluster是MariaDB数据库的同步多主集群，涉及云平台基础数据库领域，包括：当MariaDB Galera Cluster的节点掉电并上电后，上报所有节点的状态ID至服务发现集群中；遍历节点的状态ID，并判断当前状态ID的值是否为所有节点状态ID的值中最大，若是，则启动当前状态ID对应节点的服务，若否，则跳过；当最大值的状态ID对应的节点服务启动后，启动所有其它节点的服务。本发明能够快速恢复云平台基础数据库服务。

摘要： 一种基于ELM‑Hierarchical Clustering的离群点检测方法，通过ELM特征映射，把样本空间映射到一个高维的特征空间中，使得在原来的样本空间中非线性可分的问题转化为在特征空间中的线性可分的问题，然后利用Hierarchical Clustering方法对高维特征空间中的样本进行聚类分析，进而筛选出离群点。本发明的优点是：1、采用的ELM特征映射是一种显示映射方法，简便易行且使数据变得线性可分。2、能够避免Hierarchical Clustering方法的“维数灾难”，在提高原始数据的线性可分性和控制特征空间维数之间找到了一个很好的平衡点。3、可有效地提高检测精度。

摘要： 本发明公开了一种基于最大纠缠Bell态实现cluster态的远距离扩展方法。中心节点Alice通过中间节点的协助使得边缘节点Charliet(t＝1,2,3,4)实现cluster态的远距离延伸。包括：(1)构建距离扩展路径：中心节点Alice持有一组部分纠缠的cluster态|C〉1234，传输路径上，中心节点Alice与边缘节点Charliet(t＝1,2,3,4)与中间节点之间均彼此两两互联，彼此之间共享一个最大纠缠Bell态。本发明的有益效果：1、本发明中间节点的测量结果可同时传送，因此本发明提高了信息传输的效率能够满足构建复杂量子通信网络的要求。2、本发明采用的所有测量方式为Bell基测量以及单比特测量，极大地减少了具体操作难度。3、本发明扩展了通信距离，使得不直接共享量子纠缠对的边缘节点实现量子通信。

摘要： 本发明公开一种基于cluster的Node.js多进程管理方法及系统，所述系统包括：进程启动模块：用于master主进程及各个worker子进程的启动、初始化、数据加载、应用服务启动；心跳检测模块：用于当启动完成后，master主进程开启定时任务，按配置的时间间隔周期性地向各个worker子进程发出心跳检测，关闭僵死的worker子进程，并且重启新的worker子进程；状态查询接口：用于对外提供一个进程状态查询接口；消息接口函数：用于对外提供一个消息发布的接口函数，以向各个worker子进程发送消息，同时，worker子进程对外提供一个消息订阅函数，用以接收master主进程发送来的消息，并通过回调函数的形式将响应消息发送给master主进程。本发明将Node.js多进程应用抽象出一个通用框架，可提高开发效率。

摘要： 本申请公开了一种基于IVI屏显示cluster功能的装置及其方法，属于仪表盘技术领域，该基于IVI屏显示cluster功能的装置包括数据处理模块，用于接收通过汽车的BCM模块采集的反映车辆状态信息的车身控制信息，所述车身控制信息中包括至少一个车辆数据；确定所述至少一个车辆数据对应的显示优先级；将所述至少一个车辆数据与对应的显示优先级发送至IVI屏，以供所述IVI屏基于所述显示优先级将所述车身控制信息中所述至少一个车辆数据示出，以供用户及时获取所述车辆状态信息。也即，根据车身控制信息对应的显示优先度，将车身控制信息选择性的显示在IVI屏上，以便用户及时获取所需的信息，基于所获取信息能够及时掌握车辆状态，提高了在驾驶过程中的安全性。

摘要： 本发明涉及一种基于Fuzzy‑cluster任务调度方法，属于云计算技术领域。该方法包括以下步骤：S1：构建用户模型：形成用户集合，其中包含用户编号、用户名称、用户代理的编号、用户提交的任务集；S2：构建任务模型：形成任务集，其中包含编号、任务的长度、任务状态、任务的资源需求、任务已分配的资源集合、任务的最晚完成时间、任务所需要的相关数据；S3：构建资源模型：形成资源集，其中包含资源编号、资源隶属的云提供商、资源的性能、资源相似度、聚类资源综合性能；S4：划分资源Fuzzy‑cluster类别；S5：计算任务偏好系数并根据排序从高到低进行任务调度。本发明能够降低云计算的代价，在提高云系统整体效率和实现调度公平上具备一定的优越性。

摘要： 本发明提供了一种基于rabbitmq的redis cluster异地同步方法及系统，方法包括：根据第一封装指令对客户端redis组件进行封装，获得第一自定义客户端；根据第一自定义客户端，获得第一客户端请求信息；解析第一客户端请求信息，获得第一事件队列；构建第一同步rabbitmq组件；写入所述第一事件队列，获得第一写入信息；第一写入信息进行解析，获得第一解析结果；根据第一事件信息，获得第一客户端请求信息，请求第一远程redis集群，将第一本地redis命令放入所述第一远程redis集群。解决了现有技术中存在会同步过多冗杂数据以及出现网络故障时需要重新写入数据或数据缺失的技术问题。

摘要： 本发明公开了一种基于最大纠缠Bell态实现cluster态的远距离扩展方法。中心节点Alice通过中间节点的协助使得边缘节点Charliet(t＝1,2,3,4)实现cluster态的远距离延伸。包括：(1)构建距离扩展路径：中心节点Alice持有一组部分纠缠的cluster态|C〉1234，传输路径上，中心节点Alice与边缘节点Charliet(t＝1,2,3,4)与中间节点之间均彼此两两互联，彼此之间共享一个最大纠缠Bell态。本发明的有益效果：1、本发明中间节点的测量结果可同时传送，因此本发明提高了信息传输的效率能够满足构建复杂量子通信网络的要求。2、本发明采用的所有测量方式为Bell基测量以及单比特测量，极大地减少了具体操作难度。3、本发明扩展了通信距离，使得不直接共享量子纠缠对的边缘节点实现量子通信。