Data Center Traffic Scheduling Strategy for Minimization Congestion and Quality of Service Guaranteeing

According to Cisco’s Internet Report 2020 white paper,there will be 29.3 billion connected devices worldwide by 2023,up from 18.4 billion in 2018.5G connections will generate nearly three times more traffic than 4G connections.While bringing a boom to the network,it also presents unprecedented challenges in terms of flow forwarding decisions.The path assignment mechanism used in traditional traffic schedulingmethods tends to cause local network congestion caused by the concentration of elephant flows,resulting in unbalanced network load and degraded quality of service.Using the centralized control of software-defined networks,this study proposes a data center traffic scheduling strategy for minimization congestion and quality of service guaranteeing(MCQG).The ideal transmission path is selected for data flows while considering the network congestion rate and quality of service.Different traffic scheduling strategies are used according to the characteristics of different service types in data centers.Reroute scheduling for elephant flows that tend to cause local congestion.The path evaluation function is formed by the maximum link utilization on the path,the number of elephant flows and the time delay,and the fast merit-seeking capability of the sparrow search algorithm is used to find the path with the lowest actual link overhead as the rerouting path for the elephant flows.It is used to reduce the possibility of local network congestion occurrence.Equal cost multi-path(ECMP)protocols with faster response time are used to schedulemouse flows with shorter duration.Used to guarantee the quality of service of the network.To achieve isolated transmission of various types of data streams.The experimental results show that the proposed strategy has higher throughput,better network load balancing,and better robustness compared to ECMP under different traffic models.In addition,because it can fully utilize the resources in the network,MCQG also outperforms another traffic scheduling strategy that does rerouting for elephant flows(namely Hedera).Compared withECMPandHedera,MCQGimproves average throughput by 11.73%and 4.29%,and normalized total throughput by 6.74%and 2.64%,respectively;MCQG improves link utilization by 23.25%and 15.07%;in addition,the average round-trip delay and packet loss rate fluctuate significantly less than the two compared strategies.

How Chinese Financial Centers Integrate into Global Financial Center Networks:An Empirical Study Based on Overseas Expansion of Chinese Financial Service Firms

The increasing globalization of the Chinese economy has been enabled by both Chinese financial institutions operating globally as well as international firms operating within China. In geographical terms, this has been organized through a number of strategic cities serving as gateways for the exchange of financial functions, products and practices between China and the global economy. Drawing on location data of financial service firms in China listed on stock exchanges in Shenzhen, Shanghai and Hong Kong, this paper shows that Chinese financial firms are expanding globally and how Chinese financial centers are positioned and connected in the urban networks shaped by these financial service firms. It is found that Hong Kong, China, holds strategic positions in the integration of Chinese cities into global financial center networks, and that establishing a foothold in global financial centers such as New York and London has been a priority for Chinese financial institutions. The increasing capital flows directed by Chinese financial institutionssuggests a shifting global financial geography, with numerous Chinese cities playing increasingly important roles within global financial center networks.

Research on the One-Stop Information Service Model for University Library

Following the advent of and continuous progress of technology,computer network and information management have gradually being incorporated into the daily operation and management of university libraries all around the world.The service system of university libraries has also transformed from the conventional reference consulting model into a knowledge-based service model.This transformation has improved the professionalism and individualism of university libraries.Therefore,establishing a competent one-stop information service model has significant and important values.In this work,we analyzed the basic functionalities and the feasibility of one-stop information service model for university libraries.We also discussed in details the construction methodology for different modes,for reference only.

Analysis of Inpatient Bed Allocation Equity and Utilization in the City Community Health Service Center of China

The objective of this study was to examine the inpatient bed （IB） allocation equity and utilization in Chinese city commtmity health service centers （CHSCs）. The data were derived from the Baseline Survey of National City Community Health Service System Building Project, which was conducted in 1917 CHSCs in 28 cities in 2007. The IB allocation was analyzed in terms oflB alloca- tion quantity and distribution equity, and the IB utilization was analyzed by the IB utilization rate and average length of stay of the CHSC inpatients. The results showed that 49.3% of the CHSCs were equipped with IB; averagely, there were 45 IBs per CHSC, 0.94 IBs per 1000 people, and 0.38 nurses and 0.57 doctors per IB; the IB Gini coefficient was 0.32; the IB utilization rate was 40.06%; and the average length of stay of inpatients was 12.24 days. The conclusions were that IB allocation among the population was equitable, but the number of nurse per IB was not up to the national standard; and the CHSC IB utilization was low as a whole, thus inpatient service was not the main health service for Chinese CHSCs.

The Impact of Lean Six Sigma Practices on Physiotherapy Services Quality at UNRWA Healthcare Centers, Gaza Strip, Palestine

Integrating Lean and Six Sigma found a powerful business tool for the strategy improvement process and saving time is produced. The main aim of this study is to identify the impact of Lean Six Sigma (LSS) practices on physiotherapy service quality at healthcare centers of the United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA), using a descriptive-analytical approach. Data were collected using a questionnaire distributed among 49 physiotherapists working at UNRWA healthcare centers as a census sampling method between July 2016 and August 2017, following the stratified random sampling method. The Statistical Package for Social Science (SPSS) was used to analyze the collected data. The results revealed that there was a statistically significant relationship between Lean Six Sigma (LSS) dimensions and the quality of healthcare services provided in physiotherapy units at the UNRWA healthcare centers. Moreover, the application of Lean Six Sigma dimensions was adopted at 81% of UNRWA healthcare centers. Moreover, the percentage of patients’ satisfaction regarding the quality of healthcare services provided in physiotherapy units was 89%. The study emphasized the effectiveness of Lean Six Sigma dimensions application on the quality healthcare services provided in physiotherapy units at the UNRWA healthcare centers. Furthermore, employee training and reward according to a needs assessment to implement Lean Six Sigma successfully is highly recommended.

Model Farm Services Center Approach: An Implication to Boost Farmer’s Yield

The instant study was conducted to estimate the Model Farm Services Center’s (MFSC) contribution in yield improvement of major crops/vegetables in district Dera Ismail Khan, Khyber Pakhtunkhwa, Pakistan, during the year 2014-15. Based on Sekaran sampling technique 306 respondents were selected and were personally interviewed through well prepared and pre-tested interview schedule. To find out the actual performance of yield improvement by Model Farm Services Center along with other repressors, step by step analysis was performed. The results of Wilcoxon Sign Rank Test showed significant improvement in yield of sugarcane, wheat, maize, rice and tomato by Model Farm Services Center. Pearson’s correlation coefficient showed highly significant positive relation of sugarcane and wheat yield difference before and after Model Farm Services Center registration with MFSC. Ordinary Least Square Multiple-Regression Model indicates that MFSC registration duration and landholding significantly define the variation in dependent variables at 1% and 5% level of significance respectively for sugarcane yield. Whereas solely Model Farm Services Center registration duration profoundly highly significantly (P ≤ 0.01) explains the variation in dependent variables in wheat yield.

Solution of ZXWDSS MME Multimedia Mail Service Center

Starting with the applications of mobile multimedia email(MME) and multimedia message services,this paper elaborates on the net- working solutions,system components and system features of the ZXWDSS MME.Its desirable performance indices,system expand- ability and openness are beneficial for mobile telecom operators looking to make new profits.

基于REST Web Services的分布式遥感数据检索技术研究

为了更好地解决分布式遥感数据检索的问题,提出了基于REST Web Services的分布式检索实现方法。根据分布式数据检索的需求和遥感数据检索系统的特点,研究了分布式数据检索的实现技术、REST的基本概念、目标与设计原则、主要思想以及实现方式,在此基本上设计了基于REST Web Services分布式遥感数据检索原型系统,并实现了基于REST Web Services分布式遥感数据检索原型系统。

Web Services技术在虚拟企业中的应用研究

随着信息技术的发展,构建动态虚拟企业已成为一种趋势。由于Web服务技术具有良好的封装性、松散的耦合、高度可集成能力且是跨平台的和开放的,这些特性满足了构建虚拟企业的要求,因此必将成为虚拟企业今后发展的方向。提出了使用Web服务技术构建虚拟企业的设计模型,然后通过实例探讨虚拟企业业务的实现过程,最后分析虚拟企业的生命周期和该技术的优越性。

基于Web Service的虚拟研究中心KMS构建

针对虚拟研究中心知识管理敏捷化、柔性化和分布式的需求特性,结合WebService技术搭建了虚拟研究中心知识管理系统网络体系架构,提出一种基于WebService的虚拟研究中心知识管理系统模型。依据模型框架,构建雅砻江水电开发虚拟研究中心知识管理系统。研究表明,依据模型构建的虚拟研究中心知识管理系统能有效地实现基于Web的知识共享、交流和创新,模型具有较好的可靠性和可行性。

基于Web Services的协同设计服务管理中心功能设计

分析了协同设计中设计服务软件管理的相关技术和特点,对协同设计注册管理中心的需求进行了分析.并在此基础上进行了协同设计服务管理中心功能设计,并在Web Services架构的基础上实现了可靠性高、成本低的协同设计服务管理中心.

基于Web Services的异构系统资源整合的设计

论文针对校园异构系统之间的资源共享需求,提出利用Web Services技术来实现资源整合的设计方案,并详细描述了实现的关键技术。

基于Web Services和插件架构的新闻中心平台的设计

设计并实现了一个网页插件形式的半自动化的网页新闻信息搜集中间件,该中间件能将关注网站的信息搜集并集中。此外,基于该中间件,还设计了一个新闻信息的汇集平台,并以江苏城市职业学院网站作为应用实例展示了校园新闻中心。

Web Service在呼叫中心系统中的应用

随着计算机技术的普及及软硬件价格的走低,呼叫中心已经从一些由高端贵族企业转向平民化应用,呼叫中心已经开始走向普及,随着客户量的不断增加、数据处理的复杂度不断提高、业务日渐复杂等挑战的产生,呼叫中心对网络技术的要求也越来越高。Web Service具有的平台独立、低耦合等优点,使其成为呼叫中心系统开发中的重要应用技术。本文阐述了呼叫中心系统的系统架构、功能设计、Web Service在系统中的应用及使用的关键技术,在仔细分析用户需求的基础上,设计了呼叫中心系统中Web Service的应用方案。

Windows和ExchangeH最新Service Pack介绍及其它

了解最新的Windows Service Pack中会包含哪些功能。Exchange Server 2010 SP1又有什么内容，以及System Center Essentials将会给中型企业带来哪些好处。

高校国家知识产权信息服务中心建设与服务现状及发展对策研究

基于知识产权推动创新发展、引领经济结构转型升级和支撑经济高质量发展的背景,文章通过对我国103所高校国家知识产权信息服务中心的建设现状、服务现状开展调研,分析存在问题,提出对策与建议,以期推动高校图书馆知识产权信息服务健康、可持续发展。

基于明尼苏达量表的安徽省乡镇公共卫生服务从业人员工作满意度研究

目的了解安徽省基层公共卫生服务从业人员的工作满意度及影响因素,并提出相应的建议。方法2021年1—4月采用分层随机整群抽样方法在皖北、皖中、皖南分别抽取乡镇卫生院公共卫生服务从业人员进行问卷调查。采用明尼苏达满意度短式量表调查从业人员工作满意度情况,采用多元线性回归进行工作满意度的影响因素分析。结果共调查了39个县723家乡镇卫生院的5430名公共卫生服务从业人员。其中,男性2112人(占38.90%),女性3318人(占61.10%);40~49岁人群居多(2240人,占41.25%);学历以大专及以上为主(3934人,占72.45%);所学专业最多的为临床医学(2503人,占46.10%);来自一般乡镇卫生院更多(3091人,56.92%)。工作总体满意度得分为(2.02±0.78)分,内部满意度得分为(1.94±0.71)分,外部满意度得分为(2.19±0.89)分。其中“我的报酬与我所做的工作量”得分最高,为(2.46±1.02)分;“能够做不违背自己良心的事情”得分最低,为(1.74±0.65)分。性别、职称、工作机构规模和单位培训重视程度是影响乡镇公共卫生服务从业人员工作满意度的主要因素(t=−4.61、2.28、2.70、−41.78,P均<0.05)。结论安徽省基层公共卫生服务人员工作总体满意度较高,外部满意度稍逊于内部满意度。建议通过加强人才培养、改善工作条件、提升薪酬待遇等途径提高基层公共卫生服务人员工作满意度。