This thesis focuses on the design of a foveated stereo video compression algorithm for visual telepresence applications. In a typical telepresence application, a user at the local site views real-time stereo video recorded and transmitted from a robotic camera platform located at a remote site. The robotic camera platform tracks the user’s head motion producing the sensation of being present at...

Department of Surgical Specialties, Division of Neurosurgery, Pedro Ernesto University Hospital, State University of Rio de Janeiro, Rio de Janeiro RJ, Brazil; Department of Neurology, University of São Paulo, São Paulo SP, Brazil. Trigeminal neuralgia (TN) is a syndrome characterized by paroxysms of facial pain affecting mainly middle and oldaged patients. Although TN’s pathogenesis is not ful...

Since the first investigations on web graph compression, it has been clear that the ordering of the nodes of the graph has a fundamental influence on the compression rate (usually expressed as the number of bits per link). The author of the LINK database [1], for instance, investigated three different approaches: an extrinsic ordering (URL ordering) and two intrinsic (or coordinate-free) orderi...

Fortran 90 provides a rich set of array intrinsic functions that are useful for representing array expressions and data parallel programming. However, the application of these intrinsic functions to sparse data sets in distributed memory environments, is currently not supported by vendors of Fortran 90 and HPF compilers. Our recent research work has been aimed at, providing parallel processing ...

objective(s):the aim of this study was to improve flowability and compressibility characteristics of starch to use as a suitable excipient in direct compression tabletting. quasi-emulsion solvent diffusion was used as a crystal modification method. materials and methods: corn starch was dissolved in hydrochloric acid at 80˚c and then ethanol as a non-solvent was added with lowering temperature ...

Subacromial impingement syndrome (SIS) represents a spectrum of pathology ranging from subacromial bursitis to rotator cuff tendinopathy and full-thickness rotator cuff tears. The relationship between subacromial impingement and rotator cuff disease in the etiology of rotator cuff injury is a matter of debate. Both extrinsic compression and intrinsic degeneration may play a role. Management inc...

hereby we report a patient with thalassemia major having extradural cord compression at t3-t9 levels due to a mass of extramedullary hematopoiesis (emh) tissue, whose treatment was successful with hypertransfusion therapy alone. the patient was a 23-year-old man who had not received regular blood transfusion since two years before admission. he suffered from paraparesis with a history of progre...

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Dynamic textures can be defined as repetitive patterns that exhibit both spatial and temporal coherence. The problem of capturing this intrinsic behavior of a dynamic texture by learning a model from an input video is addressed. Application of a model-based method to dynamic texture synthesis, video compression and videoediting is demonstrated. Results from a method for segmentation of multiple...

Acute upper airway obstruction is a medical emergency and can be caused by many serious conditions such as a foreign body occluding the airway, intrinsic swelling (as in anaphylaxis), or extrinsic compression. Thyromegaly has rarely been reported as a source of airway compromise. We present a patient whose thyromegaly is presumed to have been induced by lithium and was massive enough to cause s...