Web Service Techniques Research Articles

Implementation of OGC web map service based on web service

OGC Web Map Service is one kind of OGC Portrayal Services belongs to OGC Web Service model and it provides multi-platform interoperability of spatial data set. This paper presents a method for implementing OGC Web Map Service based on Web Service technique and introduces the detailed process.

Architecture design of grid GIS and its applications on image processing based on LAN

Computer technology and its relative subjects developed at very high speed in recent years, so is geo-information science, including Geographic Information System (GIS), remote sensing (RS) and global position system (GPS). But with the increase of data, many data cannot be used efficiently because of the tremendous amount of data and information and the difficulty of process and transfer through network. So how to develop internet technology to solve these problems becomes a difficult problem for current computer experts and geo-science experts. Fortunately, grid computing provides us the method to solve this problem effectively. Grid computing is a resources sharing model presented by computer experts to solve current network resources imbalance problem. Basing on the application of grid computing on geographical information system (GIS), this paper analyzes the weakness and problems of traditional GIS, and then gives the method to solve these problems with the technology provided by grid computing and web services. After analyzing the characteristic of grid computing this paper expatiates on current application status of grid computing on GIS and the problems it faces, with the technology of middleware, this paper presents the architecture of grid GIS and lists the techniques it needs. In conclusion, this paper concludes that the distributing middleware architecture based on grid geographic markup language (GridGML) and web services technique is a good solution to current problems, this architecture can also solve those problems such as effective resources sharing through internet and advancing international application's efficiency, at last we discuss its implementation process based on LAN.

JISGA: A Jini-Based Service-Oriented Grid Architecture

This paper describes how to extend a Jini system into an OGSA-compliant infrastructure for Grid computing by introducing Web service techniques into the Jini system. The Jini-based Service-oriented Grid Architecture (JISGA) is presented, the functionality of the system is described, and the main services and components of the system are discussed. The paper shows how to present a Jini service as a Web service, and how an application composed of interacting services can be described using the service workflow description language (SWFL). The conversion of a composite application specified in an SWFL document into an executable Java code, and its subsequent execution, are also discussed. This latter capability, enabled by the SWFL2Java tool, permits the blocking and non-blocking submission of jobs to the Grid, and their processing in both sequential and parallel execution modes.