Evolutionary PSO-based emergency monitoring geospatial edge service chain in the emergency communication network

Emergency communication networks play a vital role in disaster monitoring,transmission,and application during disaster emergency response(DER),however,the performance and stability of edge nodes in the emergency communication networks are often weak due to limited communication and computation resources.This weakness directly affects the quality,of service(Qos)of the geospatial edge service(GES)chains involved in emergency monitoring.Existing research predominantly addresses service compositions in stable environments,neglecting the aggregation of efficient and robust GES chains in emergency communication networks.This study proposes an evolutionary_particie swarm optimization(EPSO)-based emergency monitoring GES chain in an_emergency communication network.it includes a GES chain model of emergency environment monitoring for tailing areas,as well as the designs of the particle chromosome encoding method,fitness evaluation model,and particle chromosome swarm update operators of the EPSO-based GES chain.Finally,the study conducts emergency environment monitoring experiments for tailing areas using the proposed method.Experiments results demonstrate that the proposed method significantly enhances the efficiency,stability,and reliability of emergency monitoring GEs chains in the emergency communication network.This is crucial to providing fast and reliable services for DER during natural disasters.

基于M4SCC的卫星在轨测试与通信业务监视系统方案设计

提出了基于多卫星、多测站、多天线、多频率配置和单测控中心的在轨测试和通信业务监视系统,分析了该系统的功能特点,并介绍了其硬件组成和系统软件所包含的内容.随着航天测控网的不断发展,实际工程应用中对卫星的测量要求也越来越高,该技术在对卫星的在轨测量中将会被广泛使用.

2010—2014年重庆市沙坪坝区学校传染病疫情监测情况分析

目的通过分析重庆市沙坪坝区2010—2014年全区中小学生传染病发病情况,了解其流行病学特征及变化特点,为疫情预警及采取有针对性的防控措施提供依据。方法资料来源于学校电话网络信息报送及"中国疾病预防控制信息系统"相结合,采用描述流行病学方法,对重庆市沙坪坝区2010—2014年中小学生传染病疫情资料进行分析。结果 2010—2014年学校共累计报告传染病4 958例,发病呈先降后升趋势,发病涉及乙类、丙类和其他共计12个病种。发病前3位依次为水痘(1 997例)、流行性腮腺炎(1 595例)、急性出血性结膜炎(409例),分别占发病总数的42.59%、34.02%、8.72%。发病人群以小学生为主,占78.46%。发病时间分布呈现季节双峰。结论重庆市沙坪坝区近5年学校传染病防控情况总体较好,随着流行性腮腺炎疫苗纳入基础免疫,流腮发病人数有望进一步下降,水痘依然是未来几年学校传染病防控工作的重中之重。