Search results for "rection"
showing 10 items of 965 documents
Combining omnidirectional vision with polarization vision for robot navigation
2012
Polarization is the phenomenon that describes the oscillations orientations of the light waves which are restricted in direction. Polarized light has multiple uses in the animal kingdom ranging from foraging, defense and communication to orientation and navigation. Chapter (1) briefly covers some important aspects of polarization and explains our research problem. We are aiming to use a polarimetric-catadioptric sensor since there are many applications which can benefit from such combination in computer vision and robotics specially robot orientation (attitude estimation) and navigation applications. Chapter (2) mainly covers the state of art of visual based attitude estimation.As the unpol…
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.
Orientation Adaptive Minimal Learning Machine for Directions of Atomic Forces
2021
Machine learning (ML) force fields are one of the most common applications of ML in nanoscience. However, commonly these methods are trained on potential energies of atomic systems and force vectors are omitted. Here we present a ML framework, which tackles the greatest difficulty on using forces in ML: accurate prediction of force direction. We use the idea of Minimal Learning Machine to device a method which can adapt to the orientation of an atomic environment to estimate the directions of force vectors. The method was tested with linear alkane molecules. peerReviewed
Microrrelatos en la red. Desarrollando la escritura creativa a través de Twitter en la clase de E/LE
2016
El propósito de esta propuesta didáctica consiste en desarrollar la expresión escrita a través de la composición de microrrelatos de forma colaborativa, haciendo uso de la plataforma de microblogging Twitter, y la autocorrección de los mismos por parte de los alumnos.
Wireless Charging Systems for Electric Vehicle Batteries
A Bidirectional Converter for the Integration of LiFePO4 Batteries with RES-based Generators Part I: Revising and Finalizing Design
2014
This paper presents a device for controlling and connecting combined Renewable Energy Sources (RES)-based generators and electric storage systems to the supply utility grid. The device is a bidirectional converter that can be controlled in order to facilitate the interface between the low voltage grid and small generators combined with lithium-ion LiFePO4 batteries, contemporary addressing the requirements of the reference technical standards for users connection and providing different ancillary services. The paper describes the revising and finalizing activities carried out by the DEIM of the University of Palermo and ENEA during 2013.
AN ANALYSIS OF CONTINENT-WIDE PATTERNS OF SEXUAL SELECTION IN A PASSERINE BIRD
2006
Patterns of selection are widely believed to differ geographically, causing adaptation to local environmental conditions. However, few studies have investigated patterns of phenotypic selection across large spatial scales. We quantified the intensity of selection on morphology in a monogamous passerine bird, the barn swallow Hirundo rustica, using 6495 adults from 22 populations distributed across Europe and North Africa. According to the classical Darwin-Fisher mechanism of sexual selection in monogamous species, two important components of fitness due to sexual selection are the advantages that the most attractive males acquire by starting to breed early and their high annual fecundity. W…