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With the promise of low-cost access to flexible and elastic resources, enterprises are increasingly migrating their existing workloads into the Cloud. Yet, the heterogeneity of the workloads and existing configuration of legacy IT infrastructure make it challenging to enable a one-click, seamless migration process. There are multiple tools available for migrating servers based on their existing configurations...
Internet of things (IoT) is connected world of capabilities and services that enable interaction among physical objects supported by technologies such as sensors, RFID, wireless, mobile, cloud and internet. In this paper we analyze the drivers for IT services to use IoT and challenges involved and establish the need for accelerators. Various service applications can be built using IoT in all the verticals...
Smart Grid is seeing one of the largest implementation of Communication infrastructure in the power utilities. The basic component that makes the Smart Grid work is this underlying robust information & communication technologies (ICT), which enables shared understanding between each of the complex systems in the grid. Traditionally utilities have implemented operations technology (OT) independently...
With powerful features and cross platform character, web service has been applied in the field of information technology widely. To meet dynamic needs of enterprises, it tends to generate new web applications through service compositions. Due to flaw of designed process or incorrect input, to composite service may encounter various faults during execution. Moreover, the faults often continue to accumulate...
Component-based software development paradigm enables the construction of complex applications by assembling existing self-contained components. The cost of the software development process can then be sharply reduced. Current software systems are becoming more distributed and operate in highly dynamic environments. Therefore, dependability of component-based applications is an important research...
This paper shows the developments in Web services and associated standards which offer the possibility of making composite, service-based systems a reality for many enterprises. This approach specifies and monitors interactions among heterogeneous services by tracking their commitments. Such an approach can support service and process evolution.
Business processes are increasingly complex and open because they rely on services that are distributed geographically and across organizations. As a result, they are prone to several points of failure. Monitoring, therefore, remains an important concern. We describe services monitoring support that integrates monitoring into common development activities. A flexible monitoring toolkit, REQMON, is...
This paper describes the prototype of the Massive Events Streams Service Architecture (MESSA), which is used as a framework of various RFID-enabled application systems. The MESSA captures events from a number of RFID readers, refines the events, processes the continuous queries, and delivers the event query results to the applications systems. In addition, the MESSA conforms to the ALE 1.0 interfaces...
Distributed software systems are characterized by increasing autonomy. They often have the capability to sense the environment and react to it, discover the presence of other systems and take advantage of their services, adapt and re-configure themselves in accordance with the internal as well as the global state. Testing this kind of systems is challenging, and systematic and automated approaches...
Business Process Modeling is increasingly important for the digitization of both IT and non-IT business processes, as well as for their deployment on service-oriented architectures. While a number of methodologies, languages, and software tools have been proposed to support digital business process design, a lot remains to be done for assessing a business process model validity with respect to an...
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...
The increasing ubiquity of mobile embedded systems has been matched by the evolution of a variety of wireless network standards and technologies. The major constraints of wireless embedded systems are limitations of communication bandwidth, processing capabilities, and battery power. Remote wireless embedded systems often act as sensors, which provide data to a certain community. The exchange of data...
In this paper, we introduce a pricing model that ensures efficient resource allocation that provides guaranteed quality of service while maximizing profit in multiservice networks. Specifically, a dynamic allocation policy is examined that relies on online measurements while each service class operates under a probabilistic bound delay constraint. We present a rigorous analysis of the properties of...
Video-streaming can now be offered on third-generation (3G) mobile networks. Most research efforts have focused on video download. This paper presents a detailed study of challenges faced for successfully deploying applications requiring life video upload. Both subjective and objective qualities as well as the effects of mobility are analyzed on real 3G networks. Consequently, video profiles are identified...
The home gateway market is undergoing deep changes. On one side, home networks are evolving, getting dynamic and federating more and more devices. On the WAN side, new actors appear, such as multimedia content providers. From both sides emerge new features and new management needs. In this article we highlight challenges and benefits of moving more intelligence to the home gateway, making it more...
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