Fast Authentication in Heterogeneous Wireless Networks

The growing diffusion of wireless devices is leading to an increasing demand for mobility and security. At the same time, most applications can only tolerate short breaks in the data flow, so that it is a challenge to find out mobility and authentication methods able to cope with these constraints. This paper aims to propose an authentication scheme which significantly shortens the authentication latency and that can be deployed in a variety of wireless environments ranging from common Wireless LANs (WLANs) to satellite-based access networks

Virtual induction loops using smartphones for urban traffic control systems

Growing traffic in ever congested urban cities can be managed by traffic control systems which monitor and forecast the traffic status and optimises the control strategy according to traffic flow. Such systems use input from inductive loop detectors which are costly to install and maintain. In this paper, we introduce and evaluate a novice software based solution called Virtual Induction Loops using a smartphone application and a central server. We also identify how current urban traffic control systems can benefit from such a dynamic solution

On the performance of web services, google cloud messaging and firebase cloud messaging

Smartphones and other connected devices rely on data services, such as Web Services (WS), Google Cloud Messaging (GCM) and Firebase Cloud Messaging (FCM), to share the information they collect or use. Traditionally, these services were classified according to the average number of bytes transmitted or their delivery time. However, when dealing with battery-operated devices, another important parameter to be taken into account is their power consumption. Furthermore, software designers and developers often do not consider the efficiency of a data communication system, but are simply concerned about ease-of-use and response time. In this paper, we compare FCM, GCM and two types of WS, namely Simple Object Access Protocol (SOAP) and REpresentational State Transfer (REST) WS in terms of delay, data efficiency, and power consumption. The final outcome is that RESTful WS outperforms all others, making GCM and FCM a viable alternative only when the amount of data to be transmitted is very limited, or when the mobile application requires the advanced services offered by FCM or GCM only. Keywords: Web Services, Google Cloud Messaging, Firebase Cloud Messaging, REST, SOA

Educación cooperativa : experiencias escolares significativas

Fil: Ferreyra, Horacio Ademar. Universidad Católica de Córdoba. Facultad de Educación; Argentin

Educación cooperativa: experiencias escolares significativas

Fil: Ferreyra, Horacio Ademar. Universidad Católica de Córdoba. Facultad de Educación; Argentin