Abstract In this chapter, we prove a version of the main result using length spectrum instead Laplace spectrum, in case manifold is negatively curved. We introduce L -series corresponding to unitary representation fundamental group, recall its convergence properties relation volume entropy, and behaviour finite covers.

We use a crowdsourcing approach for RF spectrum patrolling, where heterogeneous, low-cost spectrum sensors are deployed widely and are tasked with detecting unauthorized transmissions in a collaborative fashion while consuming only a limited amount of resources. We pose this as a collaborative signal detection problem where the individual sensor’s detection performance may vary widely based on ...

In the process of spectrum sensing applied to wireless communications, it is possible to build interference maps based on acquired power spectral values. This allows the characterization of spectral occupation, which is crucial to take management spectrum decisions. However, the amount of information both in the space and frequency domains that needs to be processed generates an enormous amount...

Autism is increasingly considered a spectrum disorder – autism spectrum disorder (ASD). However, considering ASD as a cluster in a feature space defined by variables related to aspects of dyadic interacting may explain the anecdotal rapidity of the casual “detection” of ASD, and refine our understanding of its phenomenology. Evidence suggests that dyadic interaction is one of the most important...