Crosscorrelation
Mostrando 13-24 de 107 artigos, teses e dissertações.
-
13. Uma nova estratégia de otimização de arranjos interferométricos aplicada ao Brazilian Decimetric Array / A new strategy for array optimization applied to brazilian decimetric array
Radio interferometric arrays measure the Fourier transform of the sky brightness distribution in a finite set of points that are determined by the cross-correlation of different pairs of antennas of the array. The sky brightness distribution is reconstructed by the inverse Fourier transform of the sampled visibilities. The quality of the reconstructed images
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/03/2006
-
14. Os Efeitos da Política Monetária sobre a Poupança Financeira, o Emprego, a Produção e o Consumo: 1990-1996 / The Effects of Monetary Policy on Financial Savings, Employment, Production and Consumption - 1990/96
This study estimates the length of time that different economic segments take to respond to changes in the interest rate. The investigation ranges from January 1990 to June 1996, which includes the "Collor" Plan and the two first years of the "Real" Plan. In Brazil, the estimation of the response time to the monetary policy is based in American studies. This
Publicado em: 24/11/2005
-
15. Lensing magnification and QSO-galaxy cross-correlations: observations, theory and simulations
We review observations and gravitational lensing theory related to the magnification of background QSOs by intervening overdensities, and the induced cross-correlation between sources and foreground galaxies. We pay special attention to simulations, and present some preliminary results from high resolution cluster simulations, which show the role of the halo
Brazilian Journal of Physics. Publicado em: 2005-12
-
16. Estimativas de correntes oceânicas superficiais pelo método da máxima correlação cruzada / Ocean surface circulation estimated by the maximum cross-correlation technique.
Neste trabalho é aplicada a técnica de Máxima Correlação Cruzada (MCC) em seqüências de imagens AVHRR/NOAA, para se estimar o campo de velocidade advectivo de superfície, através das feições termais superficiais do oceano. As imagens são divididas em janelas de moldura e de busca. Calcula-se a máxima correlação cruzada entre as janelas selecio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/12/2001
-
17. Estimativas de correntes oceânicas superficiais pelo método da máxima correlação cruzada / Ocean surface circulation estimated by the maximum cross-correlation technique.
The Maximum Cross Correlation Method (MCC) is applied to AVHRR/NOAA thermal image pairs to estimate the surface advective velocity fields derived from oceanic thermal features. The images are divided into template and search windows. The maximum crosscorrelation between these windows is calculated to obtain the displacement vector of the tracked features in
Publicado em: 2001
-
18. Dual-color fluorescence cross-correlation spectroscopy for multicomponent diffusional analysis in solution.
The present paper describes a new experimental scheme for following diffusion and chemical reaction systems of fluorescently labeled molecules in the nanomolar concentration range by fluorescence correlation analysis. In the dual-color fluorescence cross-correlation spectroscopy provided here, the concentration and diffusion characteristics of two fluorescen
-
19. Simultaneous two-photon excitation of distinct labels for dual-color fluorescence crosscorrelation analysis
Confocal fluorescence correlation spectroscopy as a time-averaging fluctuation analysis combining maximum sensitivity with high statistical confidence has proved to be a very versatile and powerful tool for detection and temporal investigation of biomolecules at ultralow concentrations on surfaces, in solutions, and in living cells. To probe the interaction
The National Academy of Sciences.
-
20. Motor unit control and force fluctuation during fatigue
During isometric contractions, the fluctuation of the force output of muscles increases as the muscle fatigues, and the contraction is sustained to exhaustion. We analyzed motor unit firing data from the vastus lateralis muscle to investigate which motor unit control parameters were associated with the increased force fluctuation. Subjects performed a sequen
American Physiological Society.
-
21. A protease assay for two-photon crosscorrelation and FRET analysis based solely on fluorescent proteins
GFP and the red fluorescent protein, DsRed, have been combined to design a protease assay that allows not only for fluorescence resonance energy transfer (FRET) studies but also for dual-color crosscorrelation analysis, a single-molecule-based method that selectively probes the concomitant movement of two distinct tags. The measurement principle is based on
National Academy of Sciences.
-
22. Ten-nanosecond molecular dynamics simulation of the motions of the horse liver alcohol dehydrogenase⋅PhCH2O− complex
Molecular dynamics simulations have been carried out for a period of 10 ns with the dimeric enzyme horse liver alcohol dehydrogenase (HLADH) present as the reactive complex HLADH⋅NAD+⋅ PhCH2O−. Cross-correlation analysis of the trajectory was carried out with the latter from 500 ps to 10 ns. The resulting cross-correlation map allowed the identificatio
National Academy of Sciences.
-
23. Intracellular calmodulin availability accessed with two-photon cross-correlation
The availability and interactions of signaling proteins are tightly regulated in time and space to produce specific and localized effects. For calmodulin (CaM), a key transducer of intracellular Ca2+ signaling, binding to its variety of targets initiates signaling cascades and regulates its subcellular localization, thereby making it unavailable for subseque
National Academy of Sciences.
-
24. Real-time enzyme kinetics monitored by dual-color fluorescence cross-correlation spectroscopy
A method for sensitively monitoring enzyme kinetics and activities by using dual-color fluorescence cross-correlation spectroscopy is described. This universal method enables the development of highly sensitive and precise assays for real-time kinetic analyses of any catalyzed cleavage or addition reaction, where a chemical linkage is formed or cleaved
The National Academy of Sciences.