1,721,040 research outputs found
Ambient Intelligence, Smart Objects and Sensor Networks: practical experiences
No full textAbstract—The recent advances in microelectronics and related
fields have made the dream of intelligent spaces and objects
come true. Reduction of technology costs, power consumption
and form factor is enabling to exploit increased processing
capabilities of sensor nodes and to distribute the intelligence in
the environment. In this paper, significant examples of ongoing
research on smart environments, sensorized tangible
interfaces applied to smart spaces and assistive technologies
are presented. Each of these examples outlines some of the
AmI challenges, such as, in particular, space awareness, smart
space flexibility to include new smart entities and natural
interfaces
Power saving policies for multipurpose WBAN
No full textWireless Body Area Networks (WBAN) present a variety of Power Management challenges ranging from radio protocols, to node components. In this work we focus on optimal exploitation of low power operating points in micro-controller-based sensor nodes under sensor sampling frequency constraints. We introduce general techniques to link the selection of optimal operating points, and operating point transitions, to application-specific requirements. We then demonstrate the application of the general techniques on a real-life use case. Experimental results show that the general techniques are applicable in practice, even though significant case-specific tuning is required
Synchronization methods for Bluetooth based WBANs, 2013 IEEE International Conference on Body Sensor Networks
No full textWireless Body Area Networks (WBANs) can take advantage of many wireless protocols. Among them, Bluetooth is a good candidate since its widespread adoption guarantees compatibility with a number of devices and significantly reduces development time. In most cases data collected from different sensors on different nodes need to be synchronized. We present a synchronization protocol that makes use of Bluetooth piconet internal clock to achieve near-millisecond accuracy with minimal radio communication overhead. Experimental results show that Bluetooth low power modes does not affect negatively accuracy, but improves it, obtaining less power consumption and higher synchronization accuracy
MOBIE: A movie brain interactive editor
No full textInteractive cinema will soon be a reality, following the current evolution of computer games. So far, however, interactivity is still limited, in particular because it is based on conscious operations of the viewer (e.g. through buttons, joystick, keyboards, voice, gestures). Instead, it would be desirable to adapt the movie plot to the viewers state of mind, without the need of deliberate actions, just by means of thoughts, unconscious preferences, and feelings. Such an interaction would represent an interesting alternative to traditional ways of movie watching, and an advance with respect to more mechanical types of interactivity
SOFIA - Smart Objects for Intelligent Applications
No full textProgetto Artemis, Prima Call, 2009-11, Coordinatore Nokia, 19 partners, costi preventivati circa 35 ME, costi preventivati Unibo circa 1.1 ME. Obiettivo: piattaforma interoperabile per servizi basati sul paradigma "space based computing". Partecipano sei gruppi di ricerca di Unibo, i cui referenti sono: Paolo Bellavista, Luigi Di Stefano, Alessandra Costanzo, Luciano Bononi, Elisabetta Farella, Tullio Salmon Cinotti. Quest'ultimo svolge il ruolo di coordinatore dell'Unità dell'Università di Bologna
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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