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In this paper, a parallel algorithm for data clustering is presented on a multi-computer with star topology. This algorithm is fast and requires a small amount of memory per processing element, which makes it even suitable for SIMD implementation. The proposed parallel algorithm completes in O(K+S2– T2) steps for a clustering problem of N data patterns with M features...
The ODYSSEY design methodology has been recently introduced as a viable solution to the increasing design complexity problem in the ASICs. It is an object-oriented design methodology which models a system in terms of its constituting objects and their corresponding method calls. Some of these methods are implemented in hardware; others are simply executed by a general purpose processor. One fundamental...
An 8-channel receive coil array was constructed and implanted adjacent to the skull in a male rhesus monkey in order to improve the sensitivity of (functional) brain imaging. The permanent implant was part of an acrylic headpost assembly and only the coil element loop wires were implanted. The tuning, matching, and preamplifier circuitry was connected via a removable external assembly. Signal-to-noise...
Much of the recent interest in location estimation systems has focused on 802.11 fingerprinting. Unlike GPS systems, 802.11 based systems can accurately estimate a user's location inside buildings. Moreover, users don't need any special equipment to carry around, as their WiFi enabled cell phone can already act as the receiver in WiFi fingerprinting systems. However, wireless access points in buildings...
User studies usually involve much organization and manual labor. Even when performed correctly, a common problem of the studies is user bias. This occurs when participating users' knowledge of the study influences their actions. Another problem is the willingness of the users to participate at all. Finally, participants will always have privacy concerns. We have developed a framework to help with...
The users of today's operating systems demand high reliability and security. However, faults introduced outside of the core operating system by buggy and malicious device drivers can significantly impact these dependability attributes. To help improve driver isolation, we propose an approach that utilizes the latest hardware virtualization support to efficiently sandbox each device driver in its own...
A diagnosis of acute diverticulitis is usually clinical. Computerized tomography (CT) is the diagnostic procedure of choice in acute diverticulitis complicated by large abscess, fistula or free perforation. CT however, is not as helpful when pathology is limited to intramural or pericolic region of a perforated diverticulum.We have previously shown that in the clinical setting of LLQ pain and tenderness...
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