Andrea Seraghiti

Learn More
Rule-based email filters mainly rely on the occurrence of critical words to classify spam messages. However, perceptive obfuscation techniques can be used to elude exact pattern matching. In this paper we propose a new technique for filtering obfuscated email spam that performs approximate pattern matching both on the original message and on its phonetic(More)
Autonomous wireless sensor networks are subject to power, bandwidth, and resource limitations that can be represented as capacity constraints imposed to their equivalent flow networks. The maximum sustainable workload (i.e., the maximum data flow from the sensor nodes to the collection point which is compatible with the capacity constraints) is the maxflow(More)
Neutral access networks (NANs) have been proposed as a mean for overcoming the stagnation of broadband market by granting positive externality to access infrastructures, in order to trigger a virtuous circle among investors, network operators, users, and service providers. From a technical point of view, NANs prompt for the development of new solutions to(More)
The roughness of the road surface affects driving safety and comfort. Having complete and up to date information on the state of the road network is essential for maintenance planning, but it entails time consuming and costly monitoring activities. As a matter of fact, maintenance interventions are mainly based on the results of case by case inspections(More)
Involving end-users in the creation of an overlay wireless access network, which provides nomadic connectivity by exploiting under-utilized residential connections, is an attractive perspective, which has motivated the emergence of WiFi communities worldwide. The practical exploitation of user-provided local loops, however, raises organizational,(More)
Autonomous wireless sensor networks are subject to power, bandwidth, and resource limitations that can be represented as capacity constraints imposed to their equivalent flow networks. The maximum sustainable workload of a sensor net work (i.e., the maximum data flow from the sensor nodes to the collection point which is compatible with the capacity(More)
Out-of-band signaling provides a valuable support to the management of wireless sensor networks. Among other signals, sound has a propagation speed in air which is fast enough to be neglected in typical sensor network applications, and slow enough to be measured by means of low-cost embedded systems. An ultrasonic triggering mechanism has been recently(More)
Energy-harvesting wireless sensor networks (EHWSNs) can be modeled as flow networks with channel capacities limited by the ratio between the environmental power available at the nodes and the energy they need to process each packet.The maximum workload that can be sustained by environmental power is the maxflow that can be routed across the network from(More)
IP Television (IPTV) is commonly considered to be the killer application for next-generation networks (NGNs). There is, however, a chicken and egg situation between the deployment of broadband access networks and the diffusion of high quality multimedia services, such as high definition television, which actually impairs the development of NGNs. As a matter(More)
Internet traffic trends and forecasts clearly show that audio-video streaming is a killer application for next generation networks. Providing multicast support within operators' managed networks is mandatory to sustain the exponential growth of demand for multimedia contents without saturating the bandwidth available in core, backhauling, and access(More)
  • 1