5G移频MIMO(多入多出)室分系统在原室分系统基础上改造,实现5G信号在单根馈线上实现2×2MIMO覆盖.从系统原理、设备优点、场景选择、部署建议、监控维护、实际应用六个方面,对5G移频MIMO室分系统的内在特性、场景部署与传统5G室分进行对比.结果表明,5G移频MIMO室分系统可以节省一半的信源,覆盖半径不变,极限速率降低一半.

跨境电子商务已经彻底转变了传统的贸易方式,成为我国经济贸易新的增长点."一带一路"倡议的提出,让全球将近100多个国家和国际组织参与到"一带一路"发展建设中来.国务院在2015年3月和2016年1月分两批批准设立杭州、天津等13个跨境电子商务综合试验区(综试区),2018年7月又新设了22个跨境电商综试区,这些举措势必加速推进"跨境电商"的迅猛发展,也催生出对于"跨境电商"人才巨大的需求.本文分析了跨境电商的发展状况、跨境电商人才需求及人才培养存在的问题,着眼于"跨境电商"行业的发展前景,提出了跨境电商人才的培养体系.

本研究以改革"办公软件高级应用"课程翻转课堂教学模式为研究对象,提出以提升学生学习和应用能力为关键因素,基于新型"MOOC+SPOC+翻转课堂"的混合式教学改革模式,整合多种优质教学资源与多种教学方法优势结合,建立可操作科学化流程和合理评价体系,实现以学生的学习为中心,发挥自主学习优势,提升学生办公软件的应用能力,达到全面掌握知识和综合提升应用能力的教学效果.

运营商大规模部署5G网络将面临站址平台资源稀缺问题.文章基于现有基站的天馈整合的可行性、天馈的经济效益两个方面,系统阐述三个典型场景天馈整合方案,通过天馈整合不仅能快速部署5G,也能有效控制铁塔租金,达到低成本快速建网和控制网络运营成本的目的.

5G通信网络主要是未来通信领域发展的方向,也是新型通信系统,与未来通信领域的需求相符合.在这样的大环境下,应该加强5G无线通信系统关键技术的研究与分析,推动5G无线通信网络的健康可持续发展.本文简述了5G无线通信技术,并且在此基础上,对5G无线通信系统的关键技术进行分析.

传统方法在对无人机故障进行识别时,未对无人机故障进行有效分类,使得无人机故障识别结果差,应用性不高.为此,本文引入诊断分类树状模型对无人机故障元数据进行分类,解决传统方法中存在的问题.分析无人机故障元数据特点,在此基础上完成诊断层分类,获得对象层、故障层、征兆层、测试层、现象层及原因层6种不同的元数据属性类型;建立诊断分类树状模型对上述的元数据属性类型分类,获得统一格式为CML类型数据;依据雷达天线信息采集相关无人机故障元数据,根据左右识别及判断脉冲点方法完成元数据属性瞬时识别过程;获取最终的数据单元,实现无人机故障元数据属性的精确识别.实验结果表明,研究的技术能够精准地识别到故障元数据属性,并对其分类,分类处理所需时间短,该技术具有很高的发展空间,对于保障无人机安全运行有重要意义.

“长征”六号运载火箭由中国航天科技集团有限公司第八研究院(下文简称航天科技集团八院)抓总研制,是我国新一代无毒、无污染三级快速发射液体运载火箭,可执行多种轨道(包括太阳同步轨道、低地球轨道等)发射任务,除了进行单星发射外,也可进行多星发射、星座的组网和补网发射.典型700km太阳同步轨道运载能力为1t.

实施"互联网+"行动计划,以电子商务带动"大众创业、万众创新"的发展,需要发展信息化创业教育和培养大量信息化创业人才.通过本文分点阐述,旨在表明信息电子化的飞速发展,与此同时国家予以大学生相应的优惠政策,以大学生创新创业为基准,在电子商务的背景以及电子商务未来发展趋势下,指出大学生要抓住机遇,在电商行业实现自我价值,展望信息化未来.

With the constant development of economy, income level of citizens increases day by day and more and more people change consumption quality, level, concept and means of food. To ensure food quality during transportation, emergence of low temperature logistic system makes up the consumption of meat product during transportation in time. Based on the concept and characteristics of low temperature logistic system, this study analyzes the design of current low temperature logistic systems for meat product combining with the production situation of meat product production in China and development trend of low temperature logistic systems, finds out existing problems as well as corresponding solutions, in order to optimize low temperature logistics system and promote continuous development of meat product market.

IT architecture transformation of telecom enterprise needs to construct mixed architecture cloud resource pool. In view of the situation, the strategy of construction and deployment of mixed cloud resource pool was proposed. The interface adaptation management and special performance indicators in the operation and management of cloud resource pool were researched in depth, which has a guiding signiifcance to the construction, operation and management of the mixed architecture cloud resource pool.

基于IT服务管理（ITSM）基础，提出了电信运营商的IT服务目录梳理方法，给出了面向客户的业务服务目录样例，并在服务目录梳理的基础上研究并提出了基于服务视角的监控方法，有效提升了服务监控的针对性和有效性，确保服务质量符合客户的期望值。

Objective This study was conducted to find out the current job satisfaction of community health service(CHS) center staff and the influencing factors under the new medical reform. Methods Cluster sampling method was used to survey 179 medical staffs of six CHS centers in Binhu district, Wuxi city. Results A total of 51.4% of the staffs were dissatisfied with their current job.Job reward scored the lowest. There was a lack of compensation mechanism and the Essential Drugs List in the new medical reform can be improved. Conclusion Improving the performance appraisal system, buliding GP team, perfecting the Essential Drugs List,exploring the implementation of drugs amount budget, establishing CHS partnership new model can improve job satisfaction in the CHS center staffs.

For requirements of data information monitoring under heterogeneous network,the data acquisition method under heterogeneous environment is researched. Simple Network Management Protocol ( SNMP) and Management Information Base ( MIB) are analyzed and used to design and implement a host resource acquiring system which has the ability to monitor host resource usage under heterogeneous network at real-time. The system uses relational database to save entire record of network hosts monitered,generating real-time resource usage curve and providing the ability to comprehensively analyze the host resource usage in a long term period. The running result shows that the system has the ability to monitor host comprehensively and effectively,timely control of running status of network resource.

In order that people intuitively know the health level of IT system operation, a set of common IT health model based on both the concept of health in medicine science and IT system composition model is designed in this paper. The model which can quantitatively measure health level of IT system has already been applied in a telecommunication company. It offers a reference of IT system monitoring to other companies.

在IEEE802.11网络中高效地切换是多媒体实时应用的一个关键要求.IEEE802.11r快速切换协议使切换时延得到了有效限制.但整个切换过程仍无法满足实时应用的需求.文中综述了无线局域网快速切换的研究,分析了IEEE802.11r对整个切换过程的影响,并介绍了快速切换研究工作.

At the base of enhanced Balanced Scorecard (BSC) method, this paper determined the performance evaluation index set of small and medium manufacturing lean revolution from a strategic point of view. According to the causality chain of evaluation index, it established evaluation model with ANP method and determined the weights of evaluation indexes with Super Decision software. Finally, it took the performance evaluation of lean revolution in production department “A” factory as an example, and the calculation results showed that this evaluation model is specified the direction of the efforts of promoting lean revolution continuously for a small and medium manufacturing in China.

In line with the teaching reform,in experimental teaching,the teaching methods,course content,and examination of experimental courses were reformed.After learning the basic skills,case study was used to guide the students to analyze and solve problems,determine pathogens and select sensitive drugs.Practice proves that the students speak highly of these reforms.The experimental courses were changed from passive to active,the students' enthusiasm and interest for learning were stimulated.At the same time,the reform played a promoting role in the improvement of the quality of teachers.

This article views science and technology support for Guilin national tourism comprehensive reforming zone as the core. According to the law of tourism development stages and based on literature study and field research, it builds an index evaluation system for the technology need of reforming zone, evaluates the current development stage of Guilin tourism by the means of grey comprehensive evaluation method, analysis the stages of development and competitive elements gap of Guilin tourism based on the evaluation result, and provides strategies to improve the corresponding strategy, which is used for relevant departments to implement the strategy of “Building a world-class tourist destination of Guilin, building beautiful Guilin”.

服务台是企业信息化内部一个极为重要的组成部分,是IT用户与IT部门的主要联络点,其目标是尽快恢复对用户的“正常服务”.在总结中国电信IT服务台建设实践经验的基础上,分析了目前服务台应用过程中的问题,并提出了若干优化建议.