We present a method based on photon migration of extracting intrinsic fluorescence spectra from turbid media, using concomitantly measured fluorescence and reflectance. Intrinsic fluorescence is defined as fluorescence that is due only to fluorophores, without interference from the absorbers and scatterers that are present. Application to fluorescence spectra taken with tissue phantoms and huma...

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 ...

The discrete cosine transforms (DCTs) have found wide applications in image/video compression (image coding). DCT-based lapped transforms (LTs), called fast LTs (FLTs), overcome blocking artifacts generated at low bit rate image coding by DCT while keeping fast implementation. This paper presents a realization of more effective integer FLT (IntFLT) for lossy-to-lossless image coding, which is u...

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 ...

We show that greedy left-to-right (right-to-left) parsing is optimal w.r.t. a suux (preex) dictionary. To exploit this observation, we show how to construct a static suux dictionary that supports on-line, linear-time optimal parsing. From this we derive an adaptive on-line method that yields compression comparing favorably to LZW.