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Load Density Analysis of Mobile Zigbee coordinator in Hexagonal Configuration

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Wireless Sensor Network 2012年第3期4卷 59-64页

作者： S. R. Ramyah Anna University Chennai India

Mobility is one of the major new paradigms of the current Internet, and this is driving most of the research activity in networking throughout the World. The Mobility of Wireless Sensor Networks (WSN) has become a hot research theme in recent years due to its wide range of applications ranging from medical research to military. The widely adopted standard for wireless sensor network platform is IEEE 802.15.4/ZigBee. The IEEE 802.15.4/ZigBee is considered the “technology of choice” due to low-power, cost-effective communication and the reliability they provide. In this paper, we perform extensive network evaluation, to study the Effect of coordinator mobility on ZigBee mesh network, using OPNET Modeler. In mobile coordinator, the type of the trajectory along with the node density and the traffic are the major factors that decide the system performance. The results obtained from the wide analysis of ZigBee mesh network shows variation when the routers are placed at Hexagonal configuration with a mobile coordinator. In this paper, variations in load metric is analyzed in hexagonal configuration by enabling and disabling ACK. Thus the status of ACK also plays a critical role in analysing load metrics.

关键词： Zigbee Mobile coordinator Load

超级coordinator,无所不能Natascha

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大学生 2012年第11期 70-70页

作者：严文华华东师范大学心理与认知科学学院

认识Natascha是在做一个项目中。那个项目比较大．涉及到好几个国家的专业人士，所以有一个projectcoordinator（项目协调员）。还没报到前，我们已收到她的欢迎邮件．并把相关信息发给我们。她的信息细致、实用，细致到列出了所住宾馆... 详细信息

认识Natascha是在做一个项目中。那个项目比较大．涉及到好几个国家的专业人士，所以有一个projectcoordinator（项目协调员）。还没报到前，我们已收到她的欢迎邮件．并把相关信息发给我们。她的信息细致、实用，细致到列出了所住宾馆周边的餐厅，

关键词： coordinator Natascha 专业人士大学生高校

Optimal Operation of Electric Vehicles and Distributed Generation Resources in Smart Grid Considering Load Management

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Energy Engineering 2022年第6期119卷 2655-2679页

作者： Zheng Wang Shangke Liu Yanli Xiao Ye Wan Bin Bai State Grid Ningxia Electric Power Co. Ltd.Eco-Tech Research InstituteYinchuan750004China

Technology advancement and the global tendency to use renewable energy in distributed generation units in the distribution network have been proposed as sources of energy *** the complexity of their protection,as well as the operation of distributed generation resources in the distribution network,factors such as improving reliability,increasing production capacity of the distribution network,stabilizing the voltage of the distribution network,reducing peak clipping losses,as well as economic and environmental considerations,have expanded the influence of distributed generation(DG)resources in the distribution *** location of DG sources and their capacity are the key factors in the effectiveness of distributed generation in the voltage stability of distribution ***,along with the scattered production sources of electric vehicles with the ability to connect to the network,due to having an energy storage system,they are known as valuable resources that can provide various services to the power *** vehicles can empower the grid or be used as a storage supply source when parked and connected to the *** paper introduces and studies a two-stage planning framework for the concurrent management of many electric vehicles and distributed generation resources with private *** the first stage,the aim is to increase the profit of electric vehicles and distributed generation sources;finally,the purpose is to reduce operating *** proposed scheduling framework is tested on a distribution network connected to bus 5 of the RBTS sample *** distributed generation sources and electric vehicles,we integrate time-consistent load management into the *** to distributed generation sources such as photovoltaic systems and wind turbines and the studied design in the modeling,we use the Taguchi TOAT algorithm to generate and reduce the scenario to ensure the uncertainty in renewable *** software is used t

关键词： Electric vehicle distributed generation sources coordinator uncertainty taguchi algorithm harmony search algorithm load management

Solution to Beacon Conflict Based on IEEE 802.15.4

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Transactions of Nanjing University of Aeronautics and Astronautics 2015年第5期32卷 560-565页

作者：黄海利王晓喃 School of Computer Science and Engineering Changshu Institute of Technology

One main issue of degrading IEEE 802.15.4performance is the beacon conflict which increases the energy ***,IEEE 802.15.4does not address a solution to avoid the beacon *** order to reduce this beacon conflict,an individual time division(ITD)algorithm based on IEEE 802.15.4is *** this algorithm,a coordinator assigns the time division(TD)for each associated coordinator so that different coordinators transmit a beacon frame at different time *** this way,the beacon conflict is decreased *** experimental results show that ITD reduces both the beacon conflict and the network energy consumption,and improves the network performance.

关键词： IEEE 802.15.4 coordinator time division beacon conflict

Family responsibility dynamics for young adults in transition to adult health care

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Journal of Diabetes Mellitus 2013年第3期3卷 139-144页

作者： Pat Rapley Gwen Babel Joey Kaye Suzanne Brown Adjunct Senior Lecturer Curtin University and Centre for Nursing Research Sir Charles Gairdner Hospital Perth Australia Department of Endocrinology and Diabetes Sir Charles Gairdner Hospital Perth Australia

Aim: To explore family responsibility dynamics, metabolic control, clinic attendance, and emergency admissions when young adults (YA) with type 1 diabetes transition to an adult hospital. Method: A longitudinal mixed method design with two study groups (parents, n = 28;YA intervention group, n = 23) and a YA comparison group (n = 20). Sample recruited from an outpatient diabetes centre. Demographic, clinic attendance, emergency admissions, biodata, and the Diabetes Family Responsibility Questionnaire (DFRQ) were completed on entry and sixmonths later as part of an 18-month trial of a diabetes transition coordinator (DTC). The selfreport DFRQ were analyzed using derived parent-child dyadic variables to explore differences at baseline and end of study using Wilcoxon Signed Rank Test. The relationship between metabolic control and the DFRQ patterns was explored using Spearman’s rho. Results: On completion of the study, the change in HBA1Cfor both adolescent groups was not significant but was less than ideal for 25% of adolescents in the study. The YA intervention group had significantly fewer missed appointments between them compared to the comparison group. The DFRQ indicated that the derived parent-child dyadic variable of task-discordance increased during the study. Conclusion: The clinically relevant diabetes-task dissonance between parents and young adults offers a challenge and a diagnostic opportunity for diabetes educators.

关键词： Diabetes Health-Care Transition Parent Adolescent Transition coordinator

Research on Wireless Monitoring Technology of the Well Site Environment

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Communications and Network 2017年第2期9卷 101-110页

作者： Bo Chen Chaohao Zhang Kui Deng Liang Ge Pan Hu School of Foreign Languages Southwest Petroleum University Chengdu China School of Mechanical and Electrical Engineering Southwest Petroleum University Chengdu China

Based on the characteristics of wireless communication technology and Wireless Sensor Network, this paper studies the well site environmental monitoring system. The relevant hardware and software of the system are designed to monitor the well site environment, thus preventing downhole accidents. The system uses the wireless ZigBee technology as the transmission mode, and combines the virtual instrument technology to design the upper machine interface. The test results show that the system can monitor the outdoor environment in real time. When the environmental parameters exceed the set value, the corresponding location of the LabVIEW interface will send an alarm.

关键词： Well Site Environmental Monitoring Wireless Communication Technology ZigBee Data Acquisition Router coordinator the Upper Machine LabVIEW

Toxic Gas Leak Monitoring Alarm System Based on Wireless Sensor Network

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Toxic Gas Leak Monitoring Alarm System Based on Wireless Sen...

Integrated Guidance and Control for Semi-Strapdown Missiles

第37届中国控制会议

作者： Jianyun Ni Zihao Li Shuzhi Xie Chao Jia Tianjin Key Laboratory for Control Theory ＆ Applications in Complicated Systems School of Electrical and Electronic EngineeringTianjin University of Technology

Aiming at the problem of toxic gas leakage in petrochemical plant,a monitoring and alarming system for toxic gas leakage based on wireless sensor network is *** system includes four parts:terminal node,coordinator,GSM module and PC host *** them,the wireless sensor network utilizes CC2530 as the main control chip,and realizes the transceiver of data between the coordinator node and the site terminal node based on the ZigBee protocol *** the coordinator node receives the concentration of toxic gases over the alert value,will drive the GSM module to send alarm information to the staff,at the same time the PC Kingview monitoring platform for the real-time display of the concentration of toxic gases,the system makes full use of the serial communication technology to realize the communication between the coordinator node,PC and GSM module;This paper introduces the system from four aspects:the overall design scheme,the hardware design of the system,the software design of the system and the performance test of the *** is proved by experiment that the monitoring alarm system has the advantages of zero wiring,sensitive alarm,low power consumption and low cost.

关键词： Wireless sensor network ZigBee Terminal node coordinator Kingview monitoring platform GSM module

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Integrated Guidance and Control for Semi-Strapdown Missiles

第37届中国控制会议

作者： Ke Yi Kai Tang Sihong She Mohan Li Zhaoming Tan Systems Engineering Research Institute

The traditional integrated guidance and control（IGC） method only considers the coupling between the attitude control loop and the guidance loop. When intercepting a target with high maneuver or high traversal speed, the semi-strapdown missiles needs large attitude adjustment to get enough maneuver and the seeker is likely to lose the target This paper considers the coupling between the attitude control and the coordinator stable tracking. First, the IGC model containing the guidance loop, attitude control loop and the coordinator stable tracking loop is established. The uncertainties of aerodynamic parameters are also considered. Then, a back-stepping IGC method is proposed based on the active disturbance rejection controller（ADRC）. Finally, a numerical simulation is given to verify the effectiveness of the proposed controller. Simulation results show that the coordinator has good stable tracking performance, and the missile has quick attitude response and small miss distance.

关键词： Semi-strapdown guided missiles IGC coordinator Back-stepping control ADRC

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XtremWeb:一个轻量级网格系统

连云港职业技术学院学报 2006年第3期19卷 19-21页

作者：程永上连云港职业技术学院江苏连云港222006

网格计算在计算机领域掀起了很大热潮,而XtremWeb是一个轻量级的P2P网格中间件,为高性能计算提供多参数的分布式计算平台,不同任务的执行由一个中心控制节点管理,提供透明容错和安全机制。文章介绍了包含三种节点的XtremWeb系统体系结... 详细信息

网格计算在计算机领域掀起了很大热潮,而XtremWeb是一个轻量级的P2P网格中间件,为高性能计算提供多参数的分布式计算平台,不同任务的执行由一个中心控制节点管理,提供透明容错和安全机制。文章介绍了包含三种节点的XtremWeb系统体系结构和运行机制、透明容错功能和安全机制,最后使用该系统来实现一个矩阵分割的并行计算。

关键词：网格 XtremWeb coordinator Workers Clients