12,073 research outputs found
Patient Specific Congestive Heart Failure Detection From Raw ECG signal
In this study; in order to diagnose congestive heart failure (CHF) patients,
non-linear second-order difference plot (SODP) obtained from raw 256 Hz sampled
frequency and windowed record with different time of ECG records are used. All
of the data rows are labelled with their belongings to classify much more
realistically. SODPs are divided into different radius of quadrant regions and
numbers of the points fall in the quadrants are computed in order to extract
feature vectors. Fisher's linear discriminant, Naive Bayes, Radial basis
function, and artificial neural network are used as classifier. The results are
considered in two step validation methods as general k-fold cross-validation
and patient based cross-validation. As a result, it is shown that using neural
network classifier with features obtained from SODP, the constructed system
could distinguish normal and CHF patients with 100% accuracy rate. KeywordsComment: Congestive heart failure, ECG, Second-Order Difference Plot,
classification, patient based cross-validatio
Pachyonychia congenita type I with severe oral leukokeratosis
Pachyonychia Congenita (PC) is a rare autosomal dominant keratin disorder that affects a number of ectodermal structures including the nails and palmoplantar skin, and often involves the oral mucosa, tongue, larynx, teeth and hair. Clinical features are usually present at birth or early infancy. There are two main subtypes of PC. Fingernail thickening and oral keratosis are more common and severe in PC-1 and cystic lesions, hair abnormalities, natal teeth and pili torti are more common in PC-2. We report the case of a 6-year-old boy with PC-1 presenting with severe and painful oral leukokeratosis and extensive caries
Adaptive Synchronization of Robotic Sensor Networks
The main focus of recent time synchronization research is developing
power-efficient synchronization methods that meet pre-defined accuracy
requirements. However, an aspect that has been often overlooked is the high
dynamics of the network topology due to the mobility of the nodes. Employing
existing flooding-based and peer-to-peer synchronization methods, are networked
robots still be able to adapt themselves and self-adjust their logical clocks
under mobile network dynamics? In this paper, we present the application and
the evaluation of the existing synchronization methods on robotic sensor
networks. We show through simulations that Adaptive Value Tracking
synchronization is robust and efficient under mobility. Hence, deducing the
time synchronization problem in robotic sensor networks into a dynamic value
searching problem is preferable to existing synchronization methods in the
literature.Comment: First International Workshop on Robotic Sensor Networks part of
Cyber-Physical Systems Week, Berlin, Germany, 14 April 201
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