基于SOA高校人力资源管理系统的设计与实现

高校人力资源管理系统是一个综合信息系统,系统信息来源于不同平台的部门系统.面向服务的体系结构是一种粗粒度、松耦合的服务架构,不涉及底层编程接口和通讯模型.现分析了SOA架构系统的实现技术,提出了一种基于Web服务的集成框架,给出了基于SOA的高校人力资源管理系统的实现方法.     

Web服务应用接口系统的开发研究

随着Web 服务技术的不断成熟,其在异构系统集成应用中的优势逐渐显现,基于Web服务的应用集成技术成为企业信息系统研究的热点。使用方便、实用的Web服务应用接口,也成了互联网通信技术的发展趋势。文中对这一关键技术进行了研究,取得了初步理论与软件成果。另外,文中深入研究了Web服务的基本原理与实现技术、基于Web服务的应用系统集成技术、Web服务应用接口系统的开发原理与技术,提出了一套 Web 服务开发方法、Web 服务应用接口系统的模型框架。在理论研究的基础上,基于Microsoft.NET2003环境,文中还实现了基于模式引导的应用接口包装器的生成与维护软件,其可为不同的应用系统提供Web服务的应用接口,方便客户端调用,还可以简化Web服务应用的编程过程,提高了应用系统开发效率。     

基于SOA和BPEL的移动运维流程管理系统的设计与实现

业务流程管理系统BPMS能够协助移动运营商设计和实施流程,提升管理效率,为用户带来更优质的服务.本文引入了面向服务的体系架构(SoA)和Web服务(Web Services),并分析了业务流程执行语言(BPEL)在实现业务流程管理系统BPMS的重要性.在此基础上,提出了一种基于SOA架构和BPEL语言、结合了工作流技术的移动业务流程管理系统的建模与控制方案.结合一个具体的业务流程实例,介绍了通过Web服务描述语言WSDL实现业务流程与Web服务之间的通信,最后介绍了该系统目前的运营应用情况.     

基于Chord的语义Web服务发现与合成的研究

提出一种基于Chord的语义Web服务发现与合成模型.将注册中心注册到分布式Chord网络中并基干领域本体对注册中心分类,使用本体描述为Web服务加入语义信息,语义Web弥补了传统Web语义不足的缺点.实验分析表明,该模型系统能提高Web服务发布、发现及合成的效率和准确率.     

数字化校园规划设计与实现

针对目前各高校信息化建设的现状,对高校数字化应用系统进行有效的规划和设计,提出了高校应用系统集成解决方案.该方案是以Web服务为信息集成的核心技术,可以集成高校现有的多种形式的信息系统.最后介绍了基于J2EE平台的应用系统集成实现方案.     

基于Sub Web Service服务组合方法

在当前Web服务动态组合研究的基础上,提出了一种基于Sub Web Service的混合Web服务组合方法。结合静态与动态服务组合方法,将动态生成的服务组合计划描述保存在缓冲池中,当用户使用该组合服务时,系统将会在缓冲池中搜寻此服务组合,并为请求调用它。在组合算法中提出了基于Sub Web Service的组合算法,将多输入多输出的Web服务分解为多输入单输出的Sub Web服务执行服务组合。在避免重复动态组合服务的基础上,减轻了Web服务在组合过程中对多输出接口的依赖性,提高了系统服务效率。     

基于服务计算的服务组合研究

通过分析现有Web服务组合系统的组合方式及特点,将服务计算引入到Web服务组合领域,提出了基于服务计算的Web服务组合系统方法,设计了基于服务计算的服务组合模型。通过松散耦合的服务组合模型来实现Web服务组合,可为服务消费者提供一个适当的、开放的、按需配置的安全的Web服务组合环境。     

基于REST架构的小额支付平台研究北大核心CSCD

针对现阶段小额支付平台终端繁杂异构的问题,提出了一种基于REST架构风格的小额支付系统平台,其将小额支付过程以及相关数据抽象为资源,以HTTP作为通信协议,通过RESTful Web服务方式连接移动客户端与Web服务端.设计了小额支付平台的架构,定义了小额支付平台RESTful Web服务的具体方法和规则,并且实现了小额支付原型系统.实验结果表明,相较于传统的基于SOAP协议的大Web服务方式,基于REST架构风格的小额支付平台具有明显的优势.     

P2P网络管理系统信息模型的设计与实现

为满足基于P2P的网络管理体系结构中管理节点间的协作需求,提出了一种基于语义Web服务和XML的网络管理信息模型.利用P2P通信和语义Web服务,可实现网管服务的分布式注册,服务的统一描述和基于能力的服务检索;利用XML来制订网络管理服务调用的标准,可以实现服务的跨域自动调用.原型实现和运行测试表明,利用提出的模型框架,异构网络管理系统可以通过节点间的服务调用和信息共享实现管理任务的协作.     

基于P2P环境的语义Web服务发现模型

随着Web服务研究的逐步深入，其重要性已逐渐被人们所认识。目前，Web服务所采用的UDDI注册模型是一种集中式架构，面临系统瓶颈、单节点故障、查找效率低以及受注册在UDDI上的网络结点规模的限制等诸多方面的影响和制约。另外。Web服务标准中对Web服务的描述仅仅只是语法层次上．并未提供对语义描述的支持，这在很大程度上影响了Web服务发现的效率及准确性。为此．文章提出了一种基于P2P环境下的语义Web服务发现模型。     

Multilayer context cloud framework for mobile Web 2.0: a proposed infrastructure

Existing context‐aware systems focus only on characterizing the situation of an entity to exhibit the advantage of contextual information association, but they have no mechanism to facilitate the interoperation and reuse of contextual information. Cloud computing offers an adaptable and flexible solution for existing context‐aware applications, integrating Mobile Web 2.0 technologies. This work presents a multilayer context cloud framework (MCCF) that integrates Web 2.0 technologies into a mobile context‐aware system for use in a cloud computing environment. The proposed MCCF includes a context sensor layer, a context information layer, a context service layer, a context representation layer, a cloud computing layer, and a mobile Web 2.0 context‐aware Software as a Service layer. To demonstrate the feasibility of this approach, a Mobile Web 2.0‐based context‐aware Software as a Service platform, which is a cloud computing application based on MCCF, is implemented to provide continuous and context‐aware monitoring of a specific application. Copyright © 2011 John Wiley & Sons, Ltd.     

A Privacy-Considerate Framework for Identity Management in Mobile Services

The subscribers’ personal information and services that mobile operators are able to provide to Web developers offer new and exciting possibilities in numerous domains. However, bringing mobile information services to the Web to enable a new generation of mobile Web services presents several research challenges on identity and privacy management. In this paper, we describe a framework for identity management in mobile services that empowers users to govern the use and release of their personal information. Our framework is based on a brokering approach that intermediates between the mobile operator’s information services and the Web service providers. By leveraging on Web services, identity management infrastructure and privacy enhancing technologies, our framework provides an effective, privacy-considerate delivery of services over the mobile Web environment. This paper describes the design principles and architecture of the framework as well as the feasibility, applicability and user-experience evaluation we have carried out.     

Mobile web for under-privileged in developing countries

In developing nations, Internet infrastructure in scarce; however, majority of people in developing countries also need access to information that matter for their daily life and livelihood. As cost of computers are higher than mobile phones and infrastructure for running computers by stable electricity is not widely available at many places of under developed and developing (hence, referred as developing) countries. One of the major options for under-privileged people in developing countries to access information is through mobile phone. A mobile device with GPRS for access to Internet services is still expensive for a common man to afford in developing countries. Therefore, to offer mobile web for the developing countries, we need to look at SMS (Short Message Service) as transport bearer, which is cheaper and can support most of the actionable services (many important services which needs a few bytes to exchange the information). SMS as transport bearer has one constraints – it does not interoperate (i.e., a user belong to one service provider is not able to access services by SMS-data of another service provider). In this paper, we propose a routing algorithm that makes SMS-data interoperable. We also propose architecture for mobile web over SMS as transport bearer for seamless application access in roaming, number portability, and vehicular condition. Substantial researches have been done on performance of TCP/IP for wireless web that mainly focused on three applications viz., file transfer, Electronic mail, and World Wide Web. This paper presents performance of actionable information through online transaction over TCP/IP and SMS under similar conditions; it shows SMS is not at a disadvantage compared to TCP/IP.     

基于Android 的露营信息系统设计与实现

提出了基于Android平台的露营信息系统的设计以及针对露营地查询相关的手机应用软件系统实现方案.该方案采用在线方式,通过百度地图API查询自己位置信息并且进行路径规划,使用Baidu开发媒体云服务,实现基于百度视频处理实现开放式url供客户端调用播放视频.详细介绍了露营信息系统的设计观点、系统架构、功能模块以及关键技术的设计,对系统进行了测试,提出未来对系统的改进方向.     

基于USSD和SMS的增值服务平台的设计与实现

SMS和USSD作为GSM网络的两种典型数据业务，得到了越来越多的服务提供商的关注。文章提出了基于USSD和SMS的信息平台的设计思路和设计方案。同时对其进行了简单的分析。该信息平台充分发挥了USSD和SMS各自的优势．便于服务提供商向移动用户提供更方便、快捷的服务。     

基于ATmega16的GSM家居安防报警器

当前人们对家居防火、防盗以及对家用电器远程控制的需求日益提升,同时手机已经成为居民随身携带的通信工具,基于此设计了一种基于GSM模块的能够通过手机对家用电器进行远程控制的集火灾、入侵报警于一体的自动短信安防报警系统。该系统由AVR ATmega16单片机外接GSM模块作为控制主机,由短信带密码操作,可设定8组用户电话号码,可中文短信报警,带有红外微波双鉴防盗和火灾检测无线通信接口,有2路无线控制继电器输出端,可联动电源,录像等工作。最后经实测表明系统具有很好的检测效果。     

Advanced cellular Internet service (ACIS)

The public's desire for mobile communications and computing, as evidenced by the popularity of cellular phones and laptop computers combined with the explosive demand for Internet access suggest a very promising future for wireless data services. The key to realizing this potential is the development and deployment of high-performance radio systems. In this article we describe a basic service concept, advanced cellular Internet service (ACIS), and the technologies for achieving reliable high-speed transmission to wide-area mobile and portable cellular subscribers with very high spectrum efficiency. Such a wireless service, optimized to meet the needs of a client-server model for information retrieval and Web browsing, and combined with evolutionary enhancements in second-generation technologies, can provide an attractive option for third-generation systems. The radio link design combines OFDM with transmit and receive antenna diversity and Reed-Solomon coding to overcome the link budget and dispersive fading limitations of the cellular mobile radio environment. For access, a dynamic packet assignment algorithm is proposed which combines rapid interference measurements, priority ordering, and a staggered frame assignment schedule to provide spectrum efficiencies of two-to-four times existing approaches     

Web服务中信息安全的综述

Web服务是当前的主流技术,但其的信息安全问题正成为其发展瓶颈之一.通过PKI和XML两个关键技术融合起来,提出了一个新的Web服务分层安全模型.基于PKI和XML两大技术的Web服务分层安全模型的建立,能够解决Web服务的信息安全问题.在今后的工作中将进一步对Web服务的安全模型的改进和扩展,以容纳新的规范标准.     

A brief history of mobile communication in Europe

Since the introduction of mobile telephony in the early 1950s in Europe, US and Japan the demand for this service exploded. It seems that the latent demand for mobile telecommunication services for decade’s continued to be very strong. After the introduction of cellular technology the capacity of the services became able to meet the massive demand. Next and future generations of mobile telecommunication technologies bring increased transmission speed and more versatile services. This forces network operators to organise multi sourced information flows supplied by service providers to increase the network effect of the system instead of providing the network infrastructure and leave the content to the users as in pure voice telephony. The drivers and inhibitors behind the emergence and recent developments of mobile telecommunications systems in Europe, are highlighted in this paper. Liberalisation of the telecom markets in Europe drove new entrants to the market and curbed excessive pricing. However, in recent years the lack of challenging service is the main cause for the wavering development of newer generations of mobile telecommunication services.     

基于Java ME-Web服务的教务师生移动查询系统研究

为满足高校师生教务移动查询信息的需要,综合分析了以往Java ME应用系统集成技术的缺点,结合Web服务技术的特点,提出了一种基于Java ME-Web服务的教务师生移动查询系统框架,并通过在Java开发环境NetBeans和应用服务器GlassFish中实现教师移动查询任教课程学生名单的服务功能,研究了Java ME-Web服务的关键技术,结果表明,高校教务师生查询系统引入Java ME-Web服务技术,能够较好解决移动访问、复用网络方法和数据的集成问题。