Parallel Rendering
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. GPGPU based image segmentation livewire algorithm implementation.
This thesis presents a Graphic Processing Unit (GPU) implementation of the Livewire algorithm, instead of using traditional architectures, like the CPU. The GPU is a Single Instruction Multiple Data (SIMD) architecture. The algorithm is divided in three phases: Sobel or Laplacian filter convolution, image modeling as a grid graph and solving the non-negative
Publicado em: 2007
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2. DISTRIBUTED VISUALIZATION USING CLUSTERS OF PCS / VISUALIZAÇÃO DISTRIBUÍDA UTILIZANDO AGRUPAMENTOS DE PCS
This work presents a new distributed rendering system destined for PC clusters. The conventional graphics pipeline is extended to a distributed pipeline that parallelizes the operations done on the CPU, the GPU and the network by using multiple threads. This system was the base for the implementation of three distributed rendering architectures: a sort-first
Publicado em: 2005
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3. Regulação da expressão e ativação do fator de transcrição C-JUN no miocardio de ratos submetido a sobrecarga pressora aguda
The early expression of immediate early genes is a fundamental feature of myocardial hypertrophy. The immediate early gene c-jun codifies a transcription factor that has been assigned to be an important regulator of the hypertrophic response in cardiac myocytes. In the present study we investigated whether pressure overload or phenylephrine treatment stimula
Publicado em: 2003
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4. No limiar do silêncio e da letra: traços da autoria em Clarice Lispector / On the threshold of silence and letter: traces of authorship in Clarice Lispector
The field of literature is the field of mimesis. So that it occurs, an object suitable for depiction, a subject that performs it and a language that makes it viable as well as a reader to receive it are imperative. The object to be re-created can be real or virtual and the means for its re-creation is the word. Words aimed at reaching beyond the threshold of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/12/2001
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5. Um metodo rapido para rendering de volumes com perspectiva digital
Volume visualization methods require extensive storage and time-intensive computations. To make them viable, researches have proposed hardware-based and software-based solutions. In most of these solutions, the rendering is based on orthographic parallel projection. However, in many applications such as virtual endoscopy, perspective projection becomes neces
Publicado em: 1999
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6. Atomic force microscope measurements and manipulation of Langmuir-Blodgett films with modified tips.
A simple method for rendering atomic force microscope tips and cantilevers hydrophilic or hydrophobic through glow discharge in an appropriate gas atmosphere is introduced. Force curves at different humidities of these modified cantilevers were taken on freshly cleaved mica (hydrophilic surface) and on a monolayer of dipalmitoylphosphatidylethanolamine trans
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7. Simian virus 40 small t antigen is not required for the maintenance of transformation but may act as a promoter (cocarcinogen) during establishment of transformation in resting rat cells.
Simian virus 40 deletion mutants affecting the 20,000-dalton (20K) t antigen and tsA mutants rendering the 90K T antigen temperature sensitive, as well as double mutants containing both mutations, induced host DNA synthesis in resting rat cells at the restrictive temperature. Nonetheless, the deletion mutants and double mutants did not induce transformation
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8. CD40 and LMP-1 both signal from lipid rafts but LMP-1 assembles a distinct, more efficient signaling complex
CD40, a member of the TNFR-1 receptor family, shares several features with LMP-1, an oncoprotein encoded by Epstein–Barr virus. CD40 and LMP-1 activate transcription by binding to TRAFs, JAK3 and/or TRADD. CD40’s association with CD40L activates signaling. However, LMP-1 signals independently of a ligand but dependently on self-association. We demonstrat
Oxford University Press.
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9. Size of Bicelle Defects Probed via Diffusion Nuclear Magnetic Resonance of PEG
Diffusion of various poly(ethylene glycol) (PEG) tracers of well-defined molecular weight and narrow polydispersity confined within the aqueous interstices between positively magnetically aligned bicelles was measured using pulsed-field-gradient 1H nuclear magnetic resonance. The bicelles consisted of mixtures of dimyristoylphosphatidylcholine (DMPC), dimyri
The Biophysical Society.