Service discovery studies in vehicular networks that guarantee QoS requirements to service requesters are very important. To the best of authors’ knowledge, none of the existing service discovery protocols in vehicular networks have been provided in the literature that guarantee QoS to service requesters and to the vehicular network. For efficient service discovery in vehicular networks, it is ...

The availability of more and more Web services provides great varieties for users to design service processes. However, there are situations that services or service processes cannot meet users’ requirements in functional QoS dimensions (e.g., translation quality in a machine translation service). In those cases, composing Web services and human tasks is expected to be a possible alternative so...

The global Internet has made real-time computer systems world-wide vulnerable to an ever-changing array of attacks for which current defense mechanisms are insufficient. In order to combat intruders in this new environment new techniques must be developed that enable decision makers to detect unusual behavior in their systems, correlate anomalies into higher-level attacker goals, plan appropria...

Successful provision of services in pervasive networks represents a major challenge. The requester of a service or resource should be able to decide whom to rely on, not only depending on the apparent QoS that various providers offer, but also on the trustworthiness of the providers, as well as their mobility patterns. Existing approaches offer a rather simplistic solution to the problem: eithe...

Higher level service support mechanisms are an integral part of the future vision for Web / Grid Services. This paper argues that the areas of discovery, differentiation, negotiation, monitoring and non-repudiation of agreements cannot be considered in isolation to each other. The areas outlined above are examined, primarily from a trust perspective, focusing on the use of contracts to guarante...

In wireless technologies, there are various types of networks having different parameters and their specifications and thus having different QoS (Quality of Service). When the MS moves from one network to another network, process is known as vertical handoff. In this paper we designed the simulation model having eight parameters for vertical handoff between WWAN and cellular network with the he...

In this paper, an agent-based platform to control and to manage the interaction between customer and different ATM service provider networks is addressed. The aim of the presented approach is to offer an ATM end-user Quality of Service (QoS) and costs information, enabling him to establish a proper routing policy when multiple switched-based ATM WANs are present. The system architecture describ...

Quality assurance (QA) tasks, such as testing, profiling, and performance evaluation, have historically been done in-house on developer-generated workloads and regression suites. Performance-intensive systems software, such as that found in the scientific computing grid and distributed real-time and embedded (DRE) domains, increasingly run on heterogeneous combinations of OS, compiler, and hard...

As we know daily thousands of new service providers register their services in the UDDI. The number of service providers providing the same functionality increases day by day. So it is very difficult for the service requester to choose the best service provider for their requirements from the UDDI. Hence web service selection plays a huge role in providing the best web services to the service r...

In this paper, we focus on Internet-based multimedia data delivery services (e.g., services provided by Web, FTP, and video-on-demand servers). According the ITU-T (working group SG 12), the Quality of a multimedia service is defined subjectively as perceived by the user and it has defined by a set of user-related parameters: i) delay, ii) delay variation, and iii) information loss. To provide ...