ÐIn many scientific applications, array redistribution is usually required to enhance data locality and reduce remote memory access in many parallel programs on distributed memory multicomputers. Since the redistribution is performed at runtime, there is a performance trade-off between the efficiency of the new data decomposition for a subsequent phase of an algorithm and the cost of redistribu...

Phase is a descriptor that tracks the progression of a defined region of myocardium through the action potential and has been demonstrated to be an effective parameter in analyzing spatiotemporal changes during fibrillation. In this review, the basic principles behind phase mapping are presented mainly in the context of ventricular fibrillation (VF), atrial fibrillation (AF), and fibrillation f...

This paper summarizes recent results obtained at TU Vienna in the field of thermal and free-carrier mapping of semiconductor devices using backside transient interferometric mapping (TIM) technique. The technique is based on measuring optical phase changes due to temperature and free carrier induced variations in semiconductor refractive index. Scanning transient heterodyne and 2D holographic i...

We present non-Gaussianity testing on recently-released derived maps from the first-year WMAP data by Tegmark, de Oliveria-Costa and Hamilton. Our test is based on a phase mapping technique which has the advantage of testing non-Gaussianity at separate multipole bands. We show that their foregroundcleaned map is against the random-phase hypothesis at all 4 multipole bands centered around l = 15...

Run-time data redistribution can enhance algorithm performance in distributed-memory machines. Explicit redistribution of data can be performed between algorithm phases when a diierent data decomposition is expected to deliver increased performance for a subsequent phase of computation. Redistribution, however, represents increased program overhead as algorithm computation is discontinued while...

INVESTIGATION OF SPATIO-TEMPORAL EFFECTS OF FMRI VISUAL FIELD MAPPING TECHNIQUES ON V1 John Janik Marquette University, 2011 Blood oxygenation level dependent functional magnetic resonance imaging has been used extensively for mapping the representation of the visual field within the human brain. Visual field mapping using fMRI has been used clinically to assess patients with cortical pathology...

Previous identification of early visual cortical areas in humans with phase-encoded retinotopic mapping techniques have relied on an accurate cortical surface reconstruction. Here a 3D phase-encoded retinotopic mapping technique that does not require a reconstruction of the cortical surface is demonstrated. The visual field sign identification is completely automatic and the method directly sup...

We demonstrate a novel method of generating a mapping function from the shape of a neutral face to the shape of one showing an expression. It is proposed that this mapping function can be used to automatically generate facial expressions from still images of never seen before faces or classify which expression a person is portraying. This new technique draws on the work of Ekmans [8] Facial Act...

Data Flow is a natural paradigm representing distributed programs able to express data and control dependencies between composing nodes. Our work concentrates on periodic Data-Flow programs having Hard Real-Time constraints. We propose a model and a string-based representation for a relevant class of Data-Flow programs and present a two-phase algorithm able to compute a schedule for a given set...