In this paper the design and implementation of fault tolerable architecture for scientific workflow engines is presented. The engines are assumed to be implemented as composite web services. Current architectures for workflow engines do not make any considerations for substituting faulty web services with correct ones at run time. The difficulty is to rollback the execution state of the workflo...

One of challenges in GIS Web service is mass GIS data storage and processing. There are at least three obstacles that oppose dealing with this challenge: the mismatch between the frequent requirement of concurrent tasks for accessing data in GIS Web service and the poor performance of conventional storage mechanism such as relational databases; the insufficiency of relational databases to manag...

Mawl is a language and compiler for programming form-based services in a deviceindependent manner. PML is a markup language and middleware for controlling and programming various interactive voice response (IVR) platforms using standard web infrastructure. The combination of Mawl and PML allows the creation of interactive services that users can access via a web browser or telephone. The abilit...

Semantic Web Services are the key technology providing services for the users’ convenience in the semantic web environment. Many companies in various fields are researching and developing languages for constructing Semantic Web Services such as DAML-S, WSDL, X-LANG and BPEL4WS. DAML-S is a method that accesses the existing Web Service method from a semantic web environment. However, the current...

Environmental decision support systems normally require a data processing workflow based on models to explore alternatives. The typical workflow to handle environmental modelling involves several steps covering data discovery, access, pre-processing, model execution and validation, concluded by result visualization. These time consuming steps are usually setup for a particular scenario and set ...

BACKGROUND With the growing popularity of waterpipe smoking (WPS), it is important to understand how WPS may impact health. The aim of this study was to systematically review the literature to identify potential health effects of WPS, specifically on the head and neck region. TYPES OF STUDIES REVIEWED The authors systematically reviewed published articles that focused on WPS and head and neck...

Influenza causes respiratory infections and poses health risks to humans and animals; its effects are complicated by increasing resistance to existing anti-influenza viral agents. Therefore, novel therapeutic approaches against influenza virus infection are required. Psoraleae semen has been widely used in traditional medicine in Korea, Taiwan, China, and Japan for treating and preventing vario...

This thesis tries to spur on transaction–oriented processing in distributed Web service systems, particularly in Web service orchestrations that implement virtual enterprises. For this purpose, existing scientific work in the area of advanced transaction semantics is analyzed in terms of its applicability in Web service systems. Moreover, the thesis examines prominent existing proposals for tra...