Now showing items 31-40 of 24508
Positive interactions between alpine plant species and the nurse cushion plant Laretia acaulis do not increase with elevation in the Andes of central Chile
In alpine habitats, positive interactions among plants tend to increase with elevation as a result of altitudinal increase in environmental harshness. However, in mountains located in arid zones, lower elevations are also ...
Posicionamento por ponto de alta precisão utilizando o GPS: Uma solução para a geodinâmica
Point positioning from GPS data can provide precision varying from 100 meters to a few millimeters at the level of 95% probability. To reach the best level of accuracy, users need proper equipment and software, as well as ...
Mitigating systematic errors for single frequency GPS receivers employing a penalized least squares methodology
Among the positioning systems that compose GNSS (Global Navigation Satellite System), GPS has the capability of providing low, medium and high precision positioning data. However, GPS observables may be subject to many ...
Pose estimation of a humanoid robot using images from a mobile external camera
(IFAC Workshop on Multivehicle Systems, 2006)
This paper describes an ongoing project to move a simple humanoid robot, without an advanced embedded electronics. We used another wheeled mobile robot which already has a locating system and is equipped with a camera. We ...
An effective wavelet method to detect and mitigate low-frequency multipath effects
To ensure high accuracy results from GPS relative positioning, the multipath effects have to be mitigated. Although the careful selection of antenna site and the use of especial antennas and receivers can minimize multipath, ...
On the solutions of the position-dependent effective mass Schrodinger equation of a nonlinear oscillator related with the isotonic oscillator
(Iop Publishing Ltd, 2009-10-16)
We study exact solutions of the position-dependent effective mass Schrodinger equation by considering the new solvable nonlinear oscillator that relates to the isotonic oscillator through the method of point canonical ...
Aprendizagem relacional com posições como estímulo em macacos-prego (Cebus apella).Relational learning with location as stimulus in capuchin monkeys (Cebus apella)
(Acta ComportamentaliaActa Comportamentalia: Revista Latina de Análisis del Comportamiento, 2010)
Análise do modelo troposférico empregado na geração de uma estação de referência virtual utilizando o posicionamento por ponto preciso
(Universidade Federal do Paraná (UFPR), Centro Politecnico, 2009-07-01)
In the past few years the interest is accomplishing a high accuracy positioning increasing. One of the methods that has been applied by the scientific community is the network based on positioning. By using multiple reference ...