Kangchan Lee

A design and implementation of XML-based Mediation Framework (XMF) for integration of Internet information resources

As the proliferation of the Internet, especially World Wide Web, numerous information resources have been constructed. The characteristics of information resources on the Internet are that the information resources are distributed, autonomous, and heterogeneous. Moreover each information resource has its own query method, data representation, and schema structure. The integration of information resources is one of the most important research issues in the Internet data management. The task of information resources integration system is to answer queries that require extracting and combining data from multiple information sources. In this paper, we propose are XML-based Mediation Framework (XMF) for integrating the Internet information resources.

Design of DPWS Adaptor for Interoperability between Web Services and DPWS in Web Services on Universal Networks

In ubiquitous computing, clients should be able to use any kinds of services whenever and wherever they are. Service has the same quality without concerned with characteristics such as the status and location of services or devices. Because the characteristics are dynamically changed, a sub-network is difficult to reflect all the changes. So, there are various sub-networks. It is necessary to integrate communication between sub-networks with interoperability. For this reason, a system must support data transmission and conversion. It also has to indicate dynamic detection of the sub-network service by events and notifications. So, we introduced WSUN environment which is composed of US Broker, US registry and UniA for using universal service. This paper designs the DPWS Adaptor for providing universal service through operational scenario of DPWS.

Universal Service Discovery Protocol

In ubiquitous computing, client should be able to discovery and use any kind of services whenever and wherever they are. We need the service discovery protocol for realization of ubiquitous. This protocol must be reflex dynamic feature of ubiquitous such as service status and location. WS-Discovery, which support peer to peer environment, must find the service every time when the clients required the service. Also, this protocol only support the SOAP based protocol. This fact brings the problem that it does not support interoperability between sub-networks. To solve these problems, we apply the Universal Service Discovery Protocol. It supports any type of service discovery and interoperability between sub-networks. Also, this protocol reflects the features of ubiquitous.

Web services on universal networks

The clients, in ubiquitous environment, want to be consistently offered services at any time and in any places. There are so many service discovery middleware such as Jini, UPnP and HAVi. Each one of them supports different communication protocol. Therefore, when the clients ask an inquiry of service search, they have to support communication protocol of all service discovery middleware. Namely, all the cost shall be borne by the customer. In addition, these middleware does not consider the service location and status. To solve these problems, we suggest the SOA-based framework is Web Services on Universal Networks. The framework supports a dynamic service discovery through the interoperability between service discovery middleware. Furthermore, it considers service location and status at service discovery process.

The evolution of standardization for mobile cloud

The cloud computing is emerging in several ICT areas, including the mobile service industry. This development is knows as mobile cloud computing. Mobile cloud can be considered a kind of cloud computing with assistance computing for mobility such as location-awareness, computing capability, and data backup. This paper introduces an evolution of standardization for mobile cloud computing.

Intermediary based architecture for mobile Web services

The popularity of Web services within the IT industry continues to grow as the next generation Web technologies. Recently the mobile industry has started to apply Web services technologies to expose and integrate the value it holds in the mobile domain. The Web services could bring new business opportunities with seamlessly integrating mobile devices and various Internet services. In this paper, we explain what are the consideration issues for adopting Web Services to mobile domain and we propose the proper architecture model and functions based on intermediaries for MWS

Improved markup language for semantic Web using object oriented technology

To overcome the problems of current Web technology and to enable the intelligent Web services, the semantic Web was suggested, allowing the computer to understand and to exchange information freely between heterogeneous computer systems during the late 1990s. Recently, OIL, DAML, SHOE and RD(S) are introduced as the markup languages and meta data model of semantic Web. However, these markup languages have their own flaws and disadvantages for ontology modeling of semantic Web. This paper analyzes markup languages for the semantic Web that have been developed so far, and proposes OOML (improved object oriented markup language) for ontology modeling and effective implementation of the semantic Web. The suggested language fits not only to the ontology modeling but also to the distributed environment of heterogeneous system. It is also capable of solving frequently occurring conflicts in the distributed environment, thus enhances reusability and expandability of the ontology.

The Design of XML-Based Software Information System Schema and Development of the Standard for Information Processing

Recently, various advance information in industry sectors address the importance of software’s which emphasized as a key capacity element of IT convergence in a diverse environments. Therefore, the necessity to enhance the availability of excellent software resources by making the database is also highlighted. Thus, this study aims to design the methods to establish a database for software resources effectively so that XML-based software information system schema can be designed and implemented, and the standard for software information system management can be developed.

UWS Broker for Ubiquitous Web Services Dynamic Discovery

Ubiquitous system provides web services which clients want irrespective of specific places and time. However, current services and devices supported by them are operated by different communication systems. To solve this problem, a system which can guarantee interoperability of services and devices is required. This paper introduces the UWS Broker, which is a middleware to discover services dynamically in ubiquitous environments. The UWS Broker, which is SOA oriented, is devised for different network based devices and services.

An efficient framework for composite enabled mobile web services

The mobile industry has started to apply Web services technologies to expose and integrate the value it holds in the mobile domain. The Web services bring an opportunity to lower integration costs between operators and content partners. And composite of Web services will be more and more important technology for effective automation of business to business collaborations. But, mobile Web services has some consideration issues for seamless service integration such as bandwidth and connectivity of wireless network, low computing power of mobile devices, etc. This paper explains the consideration issues of mobile Web services and proposes an efficient framework for mobile Web services that could support the composite services and improving the performance