A novel architecture for ubiquitous location based services in TD SCDMA 〖WT5”HZ〗Key words:〖WT5”BZ〗

Advances in mobile devices, sensors and wireless networks have motivated the development of location based services(LBS) applications. However, most of the positioning methods specifically designed for either indoor or outdoor and their accuracy and precision differs greatly, so it’s difficult using only one positioning method to meet all people’s demands. This paper proposes a new architecture for ubiquitous location based services in TDSCDMA. In this architecture the proper positioning methods are determined by the uses’ surroundings and the demands of accuracy and precision, and the problem that the user’s environments change has been also resolved commendably. And this architecture solves the problem that environment changes while positioning. The simulation shows that everyone can use the location based services anywhere and anytime with the mobile terminal through this architecture.      

Intelligence service binding architecture for interoperability between home network devices

Existing home devices in home network provides only independent services limited on a homogeneous protocol and/or do not fully support an intelligent service provided by cooperating among heterogeneous protocol devices. This paper proposes an intelligent and integrated service binding architecture which allow the users to figure out the status of devices and to cooperate among home network devices regardless of supported protocols or operational characteristics.     

Value of ecosystem services in China

The function and services are the important components of the life-support system in the planet, as well as the basic elements for sustainable development of environment and society.It is a must to evaluate it for incorporating it with the social-economic system.It is also an important approach to draw the public attention on the environmental and ecosystem conservation.In this study, the ecosystem function and services in China were estimated by employing the classification and economic parameters from Costanza et al.The type and area of terrestrial ecosystems were extracted from Vegetation Map of China (1:4 000 000), and then the distribution map of ecosystem services of China was drawn.According to our calculation, the total value of ecosystem services in China is 77 834.48′108 RMB yuan per annum.The value for terrestrial ecosystem is 56 098.46′108 yuan per annum, and that for marine ecosystem is 21 736.02′108 yuan per annum.The value of ecosystem services in China is 1.73 times bigger than GDP in 1994.The value for forest ecosystem services is 15 433.98′108 yuan per annum, which is 27.51% of the total annual ecosystem services in China.Although wetland is little in area, its ecosystem service value is huge, which is 26 736.9′108 yuan per annum.The value for grassland ecosystem is 8 697.68′108 yuan per annum.Coastal ecosystem service is 12 223.04′108 yuan per annum.Overall, the ecosystem service in China contributes 2.71% to that of our planet.The estimation method employed in this study was a conservative one, and should be improved in the future studies.     

Research of MPLS traffic engineering over differentiated services

An approach to traffic engineering that uses differentiated services (DS) and multi-protocol label switching (MPLS) to provide quantitative network quality of service (QoS) guarantees over an IP network was proposed. The traffic associated with assured forwarding (AF) Per-Hop behavior (PHB) in differentiated services enabled IP network was modeled. Furthermore, the effect of such traffic on network resources with the objective of developing efficient traffic engineering methodologies was analyzed and the optimization problem relating to traffic engineering in DS networks with an MPLS core was formulated. The service 收稿日期:by TCP and UDP flows when they share either a link or a MPLS traffic trunk was also compared and found that in order to benefit from traffic engineering, MPLS trunks should be implemented end-end (first router to last router). If some part of the network is MPLS trunk-unaware, the benefits are reduced or eliminated.     

Automatic Web services composition based on SLM

Motivated by the problem of simplifying the manual operation of the composition process, we propose an approach to automatically compose available Web services to fulfill user＇s goal based on the assumption that there are a set of alternative Web services with similar functionality and different QoS properties. A formal model （i.e. semantic links matrix, SLM for short ） is proposed to store semantic links values for the Web services with semantic relationship and QoS of Web services. The SLM provides a search place for a backward-search planning algorithm, at the same time; the QoS criteria make a rational and effective decision among a number of similar Web services. The function and some properties of the algorithm are analyzed. The approach can improve the correctness and flexibility for Web services composition and satisfy the local QoS attribute.     

An Optimization Algorithm for Service Composition Based on an Improved FOA

Large-scale service composition has become an important research topic in Service-Oriented Computing(SOC). Quality of Service(Qo S) has been mostly applied to represent nonfunctional properties of web services and to differentiate those with the same functionality. Many studies for measuring service composition in terms of Qo S have been completed. Among current popular optimization methods for service composition, the exhaustion method has some disadvantages such as requiring a large number of calculations and poor scalability. Similarly,the traditional evolutionary computation method has defects such as exhibiting slow convergence speed and falling easily into the local optimum. In order to solve these problems, an improved optimization algorithm, WS FOA(Web Service composition based on Fruit Fly Optimization Algorithm) for service composition, was proposed, on the basis of the modeling of service composition and the FOA. Simulated experiments demonstrated that the algorithm is effective, feasible, stable, and possesses good global searching ability.     

Abstract model checking for Web services

Web-services are highly distributed programs, and concurrent software is notoriously error-prone. Model checking is a powerful technique to find bugs in concurrent systems. However, the existing model checkers have no enough ability to support for the programming languages and communication mechanisms used for Web services. We propose to use Kripke structures as means of modeling Web service. This paper presents an automated way to extract formal models from programs implementing Web services using predicate abstraction for abstract model checking. The abstract models are checked by means of a model checker that implements automatic abstraction refinement. These results enable the verification of the applications that implement Web services.     

AOP event manager in open service gateway

The Open Service Gateway Initiative (OSGi) has played an important role in ubiquitous environments that support interoperability among embedded devices, such as home appliances and network devices. However, the OSGi does not have a common event mechanism yet, and it is difficult to communicate among services asynchronously. In the present work, a common event manager, Aspect-Oriented Event Manager (AOEM), was designed on an OSGi framework. AOEM supports services to generate and provide notification of events. This paper presents the implementation of AOEM as an OSGi bundle with AspectJ. The experiment on transferring between device service and application service demonstrate that AOEM provides good abstraction of the services and convenience.     

基于MMS协议的设备间通信和任务同步

ＣＩＭＳ环境是多进程和多任务的,必须实现进程间的任务同步,ＭＭＳ是支持中制造设备和自动化系统之间通信的标准语言,但在ＭＭＳ服务定义和协议规范中不存在明显的同步概念,针对这个不足之处,本文在简要介绍ＭＭＳ协议和设备间通信的基础之上,给出了采用ＭＭＳ信号量和事件对象及相应服务实现ＣＩＭＳ环境中多任务同步的方法。     

Intelligence service binding architecture for interoperability between home network devices

Existing home devices in home network provides only independent services limited on a homogeneous protocol and/or do not fully support an intelligent service provided by cooperating among heterogeneous protocol devices. This paper proposes an intelligent and integrated service binding architecture which allow the users to figure out the status of devices and to cooperate among home network devices regardless of supported protocols or operational characteristics.     

一种面向复合事件处理的综合网管服务计算平台

为在综合网管系统中支持复合事件处理,提出了一种基于企业服务总线的综合网管服务计算平台.首先采用关系代数,定义了复合事件处理模型,然后为处理复合事件中复杂的关联关系,将事件流处理引擎引入综合网管服务计算平台,然后采用关系运算,给出了主要复合事件处理算法,包括事件选择、聚集和触发算法等,实现了事件选择、聚集和触发等复合事件处理.理论分析表明,平台中主要复合事件处理算法具有很好的执行效率.该平台能够有效的支持复合事件处理.     

面向移动终端的安全中间件系统设计与实现

针对传统安全中间件系统应用于资源受限的移动终端时存在紧耦合性以及可定制性、可扩展性支持不够等问题, 提出一种基于元数据驱动的移动终端安全中间件系统。该系统通过提取软件开发过程的共同安全服务需求,进一步采用跨平台的Web服务形式发布以构成系统基础能力, 同时将资源消耗大的安全服务部署到系统基础资源层上并采取元数据驱动形式进行管理。实验表明,基于该系统的终端安全服务开发过程具有良好的扩展性、高效性和共享性。     

Design of child＇ s safety management system based on ontology using context information of home network

This paper presents a system to alert of dangerous a child situation of a child by applying context information collected from a home network to ontology that is capable of inference. Radio frequency Identification （RFID） and sensors were used for the configuration of a home network, to obtain the raw data to convert into context information. To express the ontology, web ontology language （OWL） was used to provide the inference of context information. Then, simple object access protocol （SOAP） messages were used to notify of the dangerous situations that a child may be involved in via mobile devices. The proposed system consists of Context Manager, Service Manager, and Notification Manager. The child＇s safety management system can proactively detect the context data of a child on the basis of context awareness. In the experiment, the Jena 2.0 by ontology reasoner and the OSGi（Open Service Gateway initiative） Gateway developed using open source software Knopflerfish 1.3.3 were used to implement the service frame work.     

基于OSGi的汽车远程诊断服务平台的研究与开发

本文提出的汽车远程诊断服务平台采用了基于OSGi的结构框架、B/S为主的开发模式,向汽车用户提供远程服务,响应汽车故障诊断请求,支持远程诊断功能和动态导航。该平台提高了汽车检修速度、降低了维修成本。     

Design of child’s safety management system based on ontology using context information of home network

This paper presents a system to alert of dangerous a child situation of a child by applying context information collected from a home network to ontology that is capable of inference. Radio frequency Identification (RFID) and sensors were used for the configuration of a home network, to obtain the raw data to convert into context information. To express the ontology, web ontology language (OWL) was used to provide the inference of context information. Then, simple object access protocol (SOAP) messages were used to notify of the dangerous situations that a child may be involved in via mobile devices. The proposed system consists of Context Manager, Service Manager, and Notification Manager. The child's safety management system can proactively detect the context data of a child on the basis of context awareness. In the experiment, the Jena 2.0 by ontology reasoner and the OSGi(Open Service Gateway initiative) Gateway developed using open source software Knopflerfish 1.3.3 were used to implement the service frame work.     

一种基于关联匹配度计算的语义Web服务匹配方法

在现有的语义Web服务匹配方法基础上加入服务语义关联匹配度计算,从而提出一种改进的语义服务匹配方法。该方法通过语义关联将一对一匹配淘汰的服务进行组合来实现一对多的服务匹配,在得到的候选服务和候选服务集中进一步计算Web服务的匹配度,经过匹配度的排序,得到最佳匹配度的服务。该方法避免了仅从单一接口参数上进行语义服务匹配,能在一定程度上提高匹配的效率,实现查准率、查全率和查询效率之间的有效平衡。