The selection of services of a workflow based on Quality of Service (QoS) attributes is an important issue in service-oriented systems. QoS attributes allow for a better selection process based on non-functional quality criteria such as reliability, availability, and response time. Past research has mostly addressed this problem with optimal methods such as linear programming approaches. Given ...

Quality of Service (QoS) in networks is an essential ingredient for providing attractive, reliable services to customers. In contrast to model layered protocol stacks, where resources are used exclusively, virtualization introduces a series of novel specific challenges, due to shared resources. This paper presents the model and mapping procedure of an approach for matching network QoS attribute...

Directory services are a genuine constituent of any distributed architecture which facilitate binding attributes to names and then querying this information, i.e., announcing and discovering resources. In such contexts, especially in a business environment, quality of service (QoS) and non-functional properties are usually the most important criteria to decide whether a specific resource will b...

The QoS signalling across multiple domains is an open issue: in this paper we propose a QoS interdomain signalling solution for SIP-based multimedia sessions. Our solution refers to a signalling architecture proposed by ETSI in which the interdomain QoS signalling flows on the application layer along with the session signalling. In our solution we extend the precondition set attributes defined ...

Recent work in opening up distributed object systems to make them suitable for applications needing quality of service control has had the side effect of increasing the complexity in setting up, configuring, and initializing such applications. Configuration of distributed applications is more complicated than that of non-distributed applications, simply because of the heterogeneous and distribu...

The advancements in distributed computing have driven the emergence of service-based infrastructures that allow for on-demand provision of ICT assets. Taking into consideration the complexity of distributed environments, significant challenges exist in providing and managing the offered on-demand resources with the required level of Quality of Service (QoS), especially for real-time interactive...

Service-Oriented Architecture enables the composition of loosely coupled services provided with varying Quality of Service (QoS) levels. Given a composition, finding the set of services that optimizes some QoS attributes under given QoS constraints has been shown to be NPhard. Until now the problem has been considered only for a single execution, choosing a single service for each workflow elem...

Electronic contracts (e-contracts) usually describe cross-organizational business processes defining electronic services to be provided and consumed as well as constraints on service execution such as, for instance, Quality of Service (QoS). Due to market dynamism, it is common that organizations involved in a cooperation need to do some adjustments in a pre-established e-contract. These change...

nowadays, a great portion of researches research and industrial innovation is about the electric vehicles (ev) and also ev supply equipment (evse) that play an important role in this context. evse requires standardization via effective communication protocols. in this paper, we propose to customize the existing internet standard routing protocol for low power and lossy networks (rpl) to facilit...

In this paper we identify the common building blocks that enable some networks to provide better than best-eeort transfer guarantees to the traac they carry. We consider the role signaling plays in such a network and argue in favor of: pinned routes, with a highly eecient pinning process, to improve network stability and to ease the task of maintaining Quality of Service (QoS) guarantees in the...