Results 61 to 70 of about 4,775 (117)

Control de procesos de temple con láser mediante dispositivos pirométricos

open access: yesRevista de Metalurgia, 2002
Se presenta un sistema de regulación en tiempo real del temple de aceros con láser basado en el empleo de dispositivos pirométricos de radiación. Se incluye una descripción completa del dispositivo de monitorización junto con un análisis detallado del ...
C. Molpeceres, R. Catalina, J. L. Ocaña
doaj   +1 more source

Subjective Straylight Index: A Visual Test for Retinal Contrast Assessment as a Function of Veiling Glare

open access: yesJournal of Imaging
Spatial aspects of visual performance are usually evaluated through visual acuity charts and contrast sensitivity (CS) tests. CS tests are generated by vanishing the contrast level of the visual charts.
Francisco J. Ávila   +6 more
doaj   +1 more source

Una evaluación on-line a la demanda para el autoaprendizaje

open access: yesArbor: Ciencia, Pensamiento y Cultura, 2011
En la Escuela de Minas de la Universidad Politécnica de Madrid (UPM) se ha llevado a cabo el proceso de adaptación a los principios de Bolonia. Esto ha implicado cambios en la metodología de la enseñanza.
Miguel Balbás   +3 more
doaj   +1 more source

Electromagnetic optics theory of light at the isotropic interface: illustrating the behavior of the electric field

open access: yesJournal of the European Optical Society-Rapid Publications
The electromagnetic behavior of light at the interface between isotropic materials is governed by the Fresnel formulas. These formulas primarily describe the electric field and are straightforward to interpret when dealing with transparent materials and ...
Bosch Salvador, Arteaga Oriol
doaj   +1 more source

Parámetros de Influencia en el Cálculo y la Evaluación de la Sensibilidad al Contraste

open access: yesOptometría Clínica y Ciencias de la Visión
Relevancia: El objetivo principal del estudio es comparar la curva de la Sensibilidad al Contraste (SC) obtenida con tres dispositivos diferentes en pacientes sanos.
Aser Cebollada Martínez   +7 more
doaj   +1 more source

Explicaciones de los estudiantes de primer curso de ingeniería sobre los fenómenos de inducción electromagnética

open access: yesRevista de Enseñanza de la Física, 2011
 
Jenaro Guisasola   +2 more
doaj  

Manufacturing reflection holographic couplers for see-through applications recorded in photopolymers without prisms: An experimental validation

open access: yesJournal of the European Optical Society-Rapid Publications
In the present work, the viability of a novel recording geometry to produce reflection holographic couplers is analyzed. Recalling the idea of previous works, photopolymers are used as the recording material because they have been proven to be well ...
Sirvent-Verdú J.J.   +7 more
doaj   +1 more source

Analysis of the recording of Fibonacci lenses on photopolymers with 3-D diffusion model

open access: yesJournal of the European Optical Society-Rapid Publications
In this work a three-dimensional diffusion model is used to model photopolymers as a recording media. This model allows us to predict the properties of the Diffractive Optical Elements (DOEs) once we recorded into the photopolymer.
Bravo J. C.   +7 more
doaj   +1 more source

Correction to: EEG Connectivity Is an Objective Signature of Reduced Consciousness and Sleep Depth. [PDF]

open access: yesBrain Topogr
Toedt I   +5 more
europepmc   +1 more source

Turbulence and particle dynamics in volcanic clouds in humid atmospheres. [PDF]

open access: yesSci Rep
Zapata F   +4 more
europepmc   +1 more source

Home - About - Disclaimer - Privacy