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Applications developed to fulfil distributed systems needs have been growing rapidly. Major evolutions have happened beginning with basic architecture relying on initiated request by a client to a processing side referred to as the server. Such architectures were not enough to cope up with the fast ever-increasing number of requests and need to utilize network bandwidth. Mobile agents attempted to...
Integration of hospital information systems (HIS) is an important area and one the basic requirements of hospitals since it increases quality of care and at the same time reduces costs of creating, upgrading, updating and keeping up with technology and healthcare industry standards and information technology. Cloud computing with features like multitenancy, massive scalability, elasticity, pay as...
Service Oriented Architectures allow for seamless integration of heterogeneous systems and extensive service reuse; characteristics that led to a wide adoption of this paradigm in the enterprise and military environment. While SoAs are currently deployed in tactical environments mainly at higher-echelon levels, it is necessary to allow for the exchange of information all the way down to the edge nodes...
This paper presents a comparative study to examine the relationship between Enterprise Service Bus and Soft System Bus from the various aspects including motivation problems, ideas, purposes, goals, underlying principles, design methodologies, and architectures. Although enterprise service bus and soft system bus have a similar point, i.e. they are both for the components to communicate reliably,...
Modern organizations increasingly depend heavily on information stored and processed in distributed, heterogeneous data sources and services to make critical, high-value decisions. Service-oriented systems are dynamic in nature and are becoming ever more complex systems of systems. In such systems, knowing how data was derived is of significant importance in determining its validity and reliability...
Web services are increasingly used to integrate and build business application on the internet. Failure of web services is not acceptable in many situations such as online banking, so fault tolerance is a key challenge of web services. Web service architecture still lacks facilities to support fault tolerance. This paper proposes a fault tolerant architecture for web services by increasing the reliability...
Cloud computing is the provision of providing dynamically scalable and often virtualized resources as a service over the Internet. It is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources that can be rapidly provisioned and released with minimal management effort and cloud provider interaction. Enterprises across the world are moving their...
In a Service-Oriented Architecture, a service contains a set of operations with clearly defined input and output parameters. In addition to these operations and traditional QoS, offered services need to publish different levels of intrusion tolerance for two reasons. First, software vulnerabilities can expose services to malicious actors, and make them susceptible to attacks. So, intrusion tolerance...
An approach to building information system of the smart city, based on the technology of SOA is discussed in the paper. The proposed approach will improve the manageability of the system, increase its speed and reliability, as well as no less important to provide security.
Network enabled capability (NEC) is the U.K. Ministry of Defencepsilas response to the quickly changing conflict environment in which its forces must operate. In NEC, systems need to be integrated in context, to assist in human activity and provide dependable inter-operation. In order to provide reliable and sustainable military capability, fast paced changes must be conducted without halting the...
This paper analyzes the shortages of traditional Web/CORBA based network management architecture firstly, and then puts forward a new Web/CORBA based architecture for network management with TCP connection, which applies information push technology and notification service to traditional model. It changes the passive state of server and implements network management in an active state. It can push...
In this paper, a software framework and database system for biomedical image related to Chinese human genetic resources was proposed and implemented base on web database technique and SOA architecture. Firstly, the image characterization and storage implemented well with the conceived database system. Secondly, the customized imagery retrieval methods and the metadata retrieval approach were introduced...
Due to the increasing complexity of Web systems, security testing is becoming a critical activity to guarantee the respect of such systems to their security requirements. To challenge this issue, we rely in this paper on model based active testing. We first specify the Web system behavior using IF formalism. Second, we integrate security rules -modeled in Nomad language- within this IF model using...
The UNICORE grid system provides a seamless, secure and intuitive access to distributed grid resources. In recent years, UNICORE 5 is used as a well-tested grid middleware system in production grids (e.g. DEISA, D-Grid) and at many supercomputer centers world-wide. Beyond this production usage, UNICORE serves as a solid basis in many European and International research projects and business scenarios...
This is an introduction to the proceedings of the MWS 2007 workshop held at EDOC 2007. It first explains the motivation for and background of the workshop. Then, it contains a short description of the keynote, each long and short peer-reviewed paper, and the discussion session "impact of various execution environments on middleware for web services". After the closing statements, MWS 2007...
Many Web services are expected to run with high degree of security and dependability. To achieve this goal, it is essential to use a Web-services compatible framework that tolerates not only crash faults, but Byzantine faults as well, due to the untrusted communication environment in which the Web services operate. In this paper, we describe the design and implementation of such a framework, called...
We developed a quality of service (QoS) management system to support service level management (SLM) for global enterprise services. The QoS management system is integrated with one of our enterprise services in a preproduction system, an identical system as the production system but in a test environment. Lab experiments showed that our integrated solution helps global enterprise services to better...
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