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The previous case study (Chapter 5) demonstrated that the analysis of the digital footprints people leave behind them seems to lead to an improved understanding of different aspects of mobility, travel and tourism. For instance, information about who populates different parts of the city at different times can lead to the provision of customized services,(More)
This paper illustrates how aggregated mobile phone network activity logs provide anonymous information that reveals valuable insight into the presence of tourists visiting a city. Technologies supporting pervasive services like cellular networks have the potential to generate vast quantities of detailed subscriber data, raising important privacy concerns.(More)
Over the past decade there has been an explosion in the deployment of pervasive systems like cell phone networks and content aggregators on the Internet that produce massive amounts of data as by-products of their interaction with users. This data is related to the actions and opinions of people and thereby to the overall dynamics of cities, how they(More)
Pervasive systems produce massive amounts of data as by-products of their interaction with users. Cell phone calls can inform us on how many people are present in a given area and how many are entering or leaving it. Geotagged photos can tell us where tourists go within the city and how much time they spend in each place. Descriptions of events, products,(More)
In this paper, we outline an algorithm for the automatic segmentation of sparse data in order to detect possible terrain-deformation phenomena. Segmentation is accomplished through a graph cut technique. In the graph structure, for each edge, we derive a unique energy by combining multiple independent energies tailored toward accurately locating the(More)
With the growing availability and wide distribution of low-cost, high-performance 3D imaging sensors, the image analysis community has witnessed an increased demand for solutions to the challenges of activity recognition and person identification. We propose an integrated framework, based on graph signal processing, that simultaneously performs both tasks(More)
Acknowledgements The authors would like to thank the following for their contributions in the work described: Disclaimer Statements and views presented in this paper are strictly those of the author(s), and do not necessarily reflect positions held by their affiliations, the Highway Geology Symposium (HGS), or others acknowledged above. The mention of trade(More)
1 The neuroleptic [(3)H]-haloperidol (HP) was taken up in synaptosomes prepared from rat brain, in a temperature-, sodium ion-, and energy-dependent process. 2 The highest concentration of uptake sites (V(max)=2.37 pmol mg(-1) protein min(-1)) was in the striatum with the other brain areas displaying lower (by 50-70%) values. 3 The affinity values (K(m)(More)