We compare centralized and distributed approaches for the coordination of transmission slots of wireless sensors for collision-free time division multiple access (TDMA) operation. For the centralized coordination, we focus on the guaranteed time slot (GTS) mechanism of the IEEE802.15.4 standard. For the distributed coordination, we present results with the DESYNC algorithm and its recent time-f...

This article explores the use of haptic feedback for interpersonal communication in Collaborative Virtual Environments. The investigated approach enables the improvement of communication and coordination during closely coupled collaboration presenting several communication constraints (e.g., large and complex environments, distant collaboration, etc.). After the presentation of involved communi...

Introduction The growing complexity and importance of coordination models in software applications necessarily lead to a higher relevance of performance issues for coordinators during development of systems. In this context, the performance of such models plays an important role in the quality of the final software system. Unfortunately, the lack of tools that support the performance analysis o...

a r t i c l e i n f o This study examines the dynamic performance of vertically decentralized two-echelon channel coordination for deteriorating goods under consignment and vendor-managed inventory (VMI) contracts with revenue sharing from retailer-centric business-to-business transactions in both traditional markets and electronic markets (EMs). The research presents the profit-maximization pr...

In order enhance the network efficiency of Mobile ad hoc Networks (MANETs), an Power Unbiased Cooperative Media Access Control(PUC-MAC) protocol in MANETs was planned during this paper. It adopted the most effective partnership choice statement to select the cooperative node with higher channel condition, higher passing rate and additional balanced power consumption. Simulation results showed t...

In order to improve the network performance of Mobile Ad Hoc Networks (MANETs), an Energy-balanced Cooperative Media Access Control (EC-MAC) protocol in MANETs was proposed in this paper. It adopted the best partnership selection algorithm to select the cooperative node with better channel condition, higher transmission rate and more balanced energy consumption. Simulation results showed that E...