Bruno Andò, Salvatore Baglio, Cristian Orazio Lombardo, Vincenzo Marletta
This paper deals with a novel multi-sensor approach for the implementation of a tracking system exploiting features of smartphones. Actually, the widespread use of smartphones and performances provided by the variety of sensors embedded in these devices encourage their use in mobility oriented applications, such as the exploitation of educational/job environments by weak people. The proposed methodology exploits information provided by the multisensory features embedded in a standard smartphone and advanced paradigms to improve the efficiency of the system in performing user tracking tasks.
TC4 Symposium 2014
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· 2014
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Paolo Bifulco, Maria Romano, Mario Cesarelli, Luigi Iuppariello, Nicola Pasquino
Quantum noise is typical of images obtained with a small amount of photons and X-ray fluoroscopy is an example of the type. Indeed, to keep the doses of radiation to acceptable levels for the patient and, at the same time, to allow prolonged screening, the number of X photons is drastically reduced giving rise to a remarkable quantum noise on the images. For various applications it is necessary to estimate the level of this noise: this study proposes to use a limited number of fluoroscopic images depicting a static scene to estimate the noise. By considering the noise samples uncorrelated...
TC4 Symposium 2014
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· 2014
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Paolo Bifulco, Gaetano Gargiulo, Giovanni d’Angelo, Annalisa Liccardo, Maria Romano, Fabrizio Clemente, Mario Cesarelli
In-vivo monitoring of patient’s cardiac mechanics via seismocardiogram was recently introduced (demonstrated). Usually, seismocardiogram is recorded using accelerometers placed on patient’s sternum. This study present the ability of a PVDF piezo film transducer to record the mechanical activity of the heart (seismocardiogram and heart sounds) and also of the respiration-related, thorax motion. The transducer was positioned on patient’s sternum and held in position by a chest strap. Patient’s ECG signal was simultaneously recorded to provide a timereference of the cardiac activity. The...
TC4 Symposium 2014
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· 2014
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Paolo Bifulco, Attilio Marrese, Nicola Pasquino, Rosario Schiano Lo Moriello
Statistical characterization of the maximum power received in the GSM band is presented. Results show a large unexpected variability of BCCH channel power over time. Such evidence results in a large uncertainty related to the measurement of the average power through use of the α24 parameter as required by the Italian standards to assess average exposure to electromagnetic fields and compliance with limits.
TC4 Symposium 2014
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· 2014
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Fanel Iacobescu, Alexandru Salceanu, Mirela-Adelaida Anghel, Albert-Ciprian Anghel
Accurate and reliable air polluttants measurements are widely required all over the world. Measurement science is something of vital importance to all of us. The monitored polluttants, the measurement methods, the limit values, the laert thresholds nd the criteria for locating and monitoring points have been established by national legislation on the protection of the atmoshere and meet the requirements stipulated by EU regulations. The paper presents the colclusions which have been drawn using statistical inference tools, based on the data collected during measurements of few air...
TC4 Symposium 2014
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· 2014
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Valeria Serchi, Agnese Peruzzi, Andrea Cereatti, Ugo Della Croce
Combining virtual environments and eyetracking can provide insights about the relationship between gaze and gait in people at high risk of fall. Remote eye-trackers can estimate gaze while the head moves within a limited workspace, but several factors can influence accuracy and precision. This study aimed at assessing the performance of a remote eyetracker both during controlled head movements and walking on a treadmill, while the visual stimulus moved on the screen. The head range of motion during gaze estimation was determined. The distance from the eye-tracker influenced data accuracy and...
TC4 Symposium 2014
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· 2014
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Diana Trojaniello, Andrea Cereatti, Alan K Bourke, Kamiar Aminian, Ugo Della Croce
Inter-foot distance (IFD) is an important indicator of gait stability. The IFD evaluation in outdoor conditions is still an open issue. The aim of this work was to develop and evaluate a wearable system integrating an infrared range sensor (IRR) and an inertial measurement unit (IMU), for the IFD estimation during mid-stance and mid-swing. First, the IRR sensor output was characterized and calibrated. Second, precision and accuracy were assessed in static conditions using a target object. Third, data were acquired on a subject during various lower limb movements and compared to a gold...
TC4 Symposium 2014
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· 2014
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Andrea Castelli, Gabriele Paolini, Andrea Cereatti, Ugo Della Croce
A 2-D markerless technique for the analysis of the lower limbs kinematics during gait is presented and preliminarily validated. Data were recorded using a single video camera placed laterally to the walkway. The preliminary validation was performed using a optoelectronic marker based system as gold standard. The lower limb facing the camera was modelled with four body segments: foot, shank, thigh and pelvis. Ankle socks and underwear garments were used as segmental markers to track the foot and the pelvis, respectively. The shank and thigh were tracked using multiple reference points defined...
TC4 Symposium 2014
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· 2014
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Roman Zdzislaw Morawski, Yevhen Yashchyshyn, Rafał Brzyski, Frode Fadnes Jacobsen, Wiesław Winiecki
The importance of research on new technologies that could be employed in care services for elderly and disabled people is highlighted. The need to examine the applicability of various sensor systems for non-invasive monitoring of the movements and vital bodily functions, such as heart beat or breathing rhythm, of persons in their home environment is justified. An extensive overview of the literature, concerning existing monitoring techniques, is provided. A technological potential behind impulseradar sensors is indicated. New systemic and algorithmic solutions are proposed. Preliminary...
TC4 Symposium 2014
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· 2014
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Alessandro Murgia, Marco Ortu, Roberto Tonelli, Giulio Concas, Michele Marchesi, Steve Counsell
The Issue Tracking System is a repository used to support the software development activity. Differently from Bug Tracking Systems, the Issue Tracking Systems are not bug-centric. Indeed, they record entries related to corrective, adaptive and perfective maintenance. This study tackles in the under-explored aspect of software maintenance related to the resolution of the issue-types new feature, task and improvement. We mine the issue tracking systems of five open source projects with more than 9000 issues, discovering that maintenance effort and priority are influenced by the issue-type...
TC4 Symposium 2014
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· 2014
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