Fixed point and common fixed point results for generlized contractive mappings are obtianed in ordered cone metric spaces.

Using multicast communication in Wireless Sensor Networks (WSNs) is an efficient way to disseminate code updates to multiple sensor nodes. For this purpose a multicast protocol has to support bulky traffic (typical traffic pattern for code updates) and end-to-end reliability. In addition, we are interested in energy-efficient operations due to the limited resources of WSNs. Currently no data di...

More and more Wireless Sensor Networks (WSNs) applications and protocols are proposed. Notably, critical applications, which must meet time and reliability requirements. Works on the real-time capability of WSNs have been proposed [1]. In this paper we propose to study the achievable reliability of WSNs, tacking into account the probabilistic nature of the radio link. We define the reliability ...

When designing a system for mobile augmented reality, problems to be tackled concern tracking, rendering performance, end-to-end latency, battery usage, and communication bandwidth of the mobile platform. We developed an integral solution covering all these aspects, while still being manageable from the application's point of view. In this paper we outline the global layout of our system, and d...

Humans implicitly rely on properties of the materials that make up ordinary objects to guide our interactions. Grasping smooth materials, for example, requires more care than rough ones, and softness is an ideal property for fabric used in bedding. Even when these properties are not purely visual (softness is a physical property of the material), we may still infer the softness of a fabric by l...