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This paper describes the architecture and design of Grid OPTICS(TM), a novel software framework for integrating a collection of software tools developed by PNNL's Future Power Grid Initiative (FPGI) into a coherent, powerful operations and planning tool for the power grid of the future. Grid OPTICS(TM) enables plug-and-play of various analysis, modeling and visualization software tools to improve...
As the smart grid becomes reality, software architectures for integrating legacy systems with new innovative approaches for grid management are needed. These architectures must exhibit flexibility, extensibility, interoperability and scalability. In this position paper, we describe our preliminary work to design such an architecture, known as GridOPTICS, that will enable the deployment and integration...
The P2P applications employing supernode architecture become more and more popular, while the problem about supernode selection is still open. When selecting supernodes, current researches and application fields mainly focus on the capability criterion such as software and hardware. So this provides malicious node with a good chance to exert malicious behaviors because they can seriously damage the...
In SOA, Reputation-Based Trust (RBT) mechanism is applied to achieve trust management. RBT enables services to assess the trust level of other services based on the reputation accumulated from user recommendations. A key challenge to apply RBT is to prevent the strategic behavior of users when they provide recommendations - they might give unfair ratings to benefit themselves. In this paper, we propose...
The architecture of complex software systems is a collection of decisions that are very expensive to change. This makes effective software architecture evaluation methods essential in today's system development for mission critical systems. We have previously developed MEMS for evaluating middleware architectures, which provides an effective assessment of important quality attributes and their characterizations...
Architecture evaluation methods provide general guidelines to assess quality attributes of systems, which are not necessarily straightforward to practice with. With COTS middleware based systems, this assessment process is further complicated by the complexity of middleware technology and a number of design and deployment options. Efficient assessment is key to produce accurate evaluation results...
REpresentational State Transfer (REST) is the set of design principles behind the World Wide Web (WWW). REST treats all entities in the world as link-connected resources, and supports a resource-oriented architecture (ROA) for the design of applications. REST and ROA are responsible for many of the desirable quality attributes achieved in the WWW, such as loose-coupling (better adaptability) and interoperability...
With the rapid development of SOA and SaaS technologies, it's possible to construct a powerful e-services system rapidly with ready-to-use services. At the same time, it brings a big challenge to the architecting and design of e-services system compared with traditional software design. In this paper, we propose a novel approach for new generation e-services system design and evolution, which use...
Composing adaptive and self-managing Web services needs plug-and-play architecture so that the deployment of control components does not require changes made to the Web services and the host middleware platforms. This is especially challenging for Web services running on COTS middleware platforms, such as Microsoft.Net. In this paper, we propose an architectural solution that introduces a management...
Autonomic networking requires that the services and resources offered by the network at any specific time adapt to evolving changes in user needs, business goals and environmental conditions. This paper describes a rich and extensible context-aware policy model as part of the FOCALE autonomic network architecture. This context-aware policy model is built explicitly to support context-awareness that...
Web services (WS) are becoming more and more popular nowadays and service-oriented architecture (SOA) have been widely used in the construction of information systems. But most of the SOA applications are not brand new and usually evolved from legacy systems. Our research group is building a service identification framework used for the SOA reengineering of existing large-scale information applications...
Publishing and delivering traffic information generally depend on message board and public radio service in China, which usually sends out static information without dynamic interaction between the services and the users. With the development of WebGIS and its successful application, it is possible to introduce the Web-based multiple architecture into the traffic information system. Currently, most...
Due to the thrive of networking multimedia, artificial intelligence and embedded system, video surveillance system is evolved from computer-based to embedded-based. This paper presents an intelligent multimedia surveillance system based on embedded video server. Design and implementation issues of this surveillance system are discussed including system architecture, hardware design and software framework...
Designing complex multi-tier applications that must meet strict performance requirements is a challenging software engineering problem. Ideally, the application architect could derive accurate performance predictions early in the project life-cycle, leveraging initial application design-level models and a description of the target software and hardware platforms. To this end, we have developed a capacity...
Database-centric information systems are critical to the operations of large organisations. In particular, they often process a large amount of data with stringent performance requirements. Currently, however, there is a lack of systematic approaches to evaluating and predicting their performance when they are subject to an exorbitant growth of workload. In this paper, we introduce such a systematic...
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