This paper presents an integrated method to help design and implement a Web-based Decision Support Systems (DSS) in a distributed environment. First, a layered software architecture is presented to assist in the design of a Web-based DSS. The layered software architecture can provide a formal and hierarchical view of the Web-based DSS at the design stage. Next, a component-based framework is pr...

In our research, we investigate design processes of future software systems. Our vision is that software services are provided in a world-wide distributed market and are composed automatically in order to fulfil individual user requests on-thefly. This On-The-Fly Computing (OTF) software provision can be defined and then applied in different domains taking into account constraints of those doma...

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix Chapter 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Research Problems and Motivations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1.1 Architectural Support for Tangible User Interfaces with Distributed, Heterogeneous Compu...

In distributed machine control system the software architecture is typically a weak spot because developers lack good design practices. Software architecture design patterns have been found useful for improving the software design. However, there is no comprehensive collection of patterns for distributed machine control systems even though many patterns and pattern languages can be applied to t...

The Grid provides a sophisticated service layer allowing users to access and manage distributed hardware resources. Grid tools such as Globus handle multiple networks, machines, binary representations of data, and scheduling policies. However, providing end users with practical tools to tie together combined hardware and software resources distributed across the Grid requires an additional soft...

This paper introduces and studies PoliS, a coordination model to specify the software architecture of distributed applications. PoliS is based on multiple dataspaces containing both data and programs. We deene PoliS syntax and semantics, and show how it can be used as a formal notation for specifying open systems. We adopt TLA logic to reason on PoliS speciications. Finally, we discuss an appli...

The creation and validation of product line software architectures are inherently more complex than those of software architectures for single systems. This paper compares a process for creating and evaluating a traditional, one-ofa-kind software architecture with one for a reference software architecture. The comparison is done in the context of PuLSE-DSSA, a customizable process that integrat...

Modern distributed software applications generally operate in complex and heterogeneous computing environments (like the World Wide Web). Different paradigms (client-server, mobility based, etc.) have been suggested and adopted to cope with the complexity of designing the software architecture of distributed applications for such environments, and deciding the "best" paradigm is a typical choic...

Embedded systems are becoming increasingly complex and more distributed. Cost and quality requirements necessitate reuse of the functional software components for multiple deployment architectures. An important step is the allocation of software components to hardware. During this process the differences between the hardware and application software architectures must be reconciled. In this pap...

With the emergence of the Object Management Group's CORBA (Common Object Request Broker Architecture) and comparable platforms heterogeneous and distributed computing is facilitated. Providing location-, language-, and platform-transparency, CORBA promotes the independent development of software components and standardizes the interaction between components. However, the design of entire softwa...