Search results for "Correction"

Presentations of constrained systems with unconstrained positions

2005

International audience; We give a polynomial-time construction of the set of sequences that satisfy a finite-memory constraint defined by a finite list of forbidden blocks, with a specified set of bit positions unconstrained. Such a construction can be used to build modulation/error-correction codes (ECC codes) like the ones defined by the Immink-Wijngaarden scheme in which certain bit positions are reserved for ECC parity. We give a lineartime construction of a finite-state presentation of a constrained system defined by a periodic list of forbidden blocks. These systems, called periodic-finite-type systems, were introduced by Moision and Siegel. Finally, we present a linear-time algorithm for con…

Multiple Structured Light-Based Depth Sensors for Human Motion Analysis: A Review

2012

Human motion analysis is an increasingly important active research domain with various applications in surveillance, human-machine interaction and human posture analysis. The recent developments in depth sensor technology, especially with the release of the Kinect device, have attracted significant attention to the question of how to take advantage of this technology in order to achieve accurate motion tracking and action detection in marker-less approaches. In this paper, we review the benefits and limitations deriving from the adoption of structured light-based depth sensors in human motion analysis applications. Surveying the relevant literature, we have identified in calibration, interf…

Geometric Optimal Control of Simple Quantum Systems

2011

International audience

Comparaison de deux méthodes de correction atmosphérique des données thermiques de Landsat TM

1996

The high resolution of Landsat Thematic Mapper (TM) thermal infrared data can be interesting in applications such as energy balance and crop water stress studies. However, surface temperature measurements are strongly affected by atmospheric effects, particularly by water vapour absorption, therefore a correction method is absolutely necessary. The impossibility of applying a split-window equation and the difficulty of having temporarily coincident radiosondes produce a slight use of Landsat TM data to obtain surface temperature. Vidal et al. show that in a zone with homogeneous climatic conditions, atmospheric correction can be evaluated by using energy balance equation and standard meteor…

Flexibilité du contrôle moteur dans les mouvements complexes dirigés

2011

The main objective of this thesis is to study the motor flexibility in complex movements when an unexpected event makes the initial motor plan inefficient. In this way, three kinematic and electromyographic studies and a fourth with functional magnetic resonance imaging were realized. (1)The main result of the first study clearly demonstrate that during complex movements express motor corrections in the upper and lower limbs, with latency responses of less than 100 ms, were revealed by contrasting electromyographic activities in perturbed and unperturbed trials. Such findings could indicate that visual on-going movement corrections may be accomplished via fast loops at the level of the uppe…

Recherches sur le tribunal correctionnel de la Seine aux 19e et au 20e siècles

1995

Fonētisko traucējumu mazināšana vidējā pirmsskolas vecuma bērniem artikulācijas vingrinājumos

2022

Ar literatūras izpēti sākas jebkurš pētnieciskais darbs. (Albrehta, 1998, 9). Darba autore izvēlētajam darba tematam piemeklēja un aplūkoja daudzus literatūras avotus, lai sekmīgi veiktu pētījumu, kuri vienmēr balstās uz teorētiskiem uzskatiem, un kā tiks veikts arī šajā diplomdarbā. Darba autore 1. nodaļā veic teorētiskās literatūras analīzi, lai izzinātu noteiktā vecumposma (4-5 gadu jauna) bērna attīstības raksturojumu veselumā. 2.nodaļā autore pēta un analizē literatūru par runas traucējumu rašanās cēloņiem, izpausmēm un fonētisko traucējumu raksturojumu. Balstoties uz vairāku autoru darbiem, 3.nodaļā tika veikta izpēte par artikulācijas aparātu un tā vingrinājumiem, un artikulācijas ap…

A preterm child grows : focus on speech and language during the first two years

2000

Spectral calibration of hyperspectral imagery using atmospheric absorption features

2006

One of the initial steps in the preprocessing of remote sensing data is the atmospheric correction of the at-sensor radiance images, i.e., radiances recorded at the sensor aperture. Apart from the accuracy in the estimation of the concentrations of the main atmospheric species, the retrieved surface reflectance is also influenced by the spectral calibration of the sensor, especially in those wavelengths mostly affected by gaseous absorptions. In particular, errors in the surface reflectance appear when a systematic shift in the nominal channel positions occurs. A method to assess the spectral calibration of hyperspectral imaging spectrometers from the acquired imagery is presented in this p…

Photochemistry of oxidized Hg(I) and Hg(II) species suggests missing mercury oxidation in the troposphere.

2020

8 pags., 5 figs., 2 tabs.