Concept

Pollution lumineuse

Publications associées (329)

ExposureSense: Integrating Daily Activities with Air Quality using Mobile Participatory Sensing

Karl Aberer, Julien Eberle, Zhixian Yan, Dragan Stojanovic

With an increasing number of rich embedded sensors, like accelerometer and GPS, smartphone becomes a pervasive people-centric sensing platform for inferring user’s daily activities and social contexts. Alternatively, wireless sensor network offers a compre ...

2013

Effects of prior light exposure on early evening performance, subjective sleepiness, and hormonal secretion

Jean-Louis Scartezzini, Mirjam Münch, Friedrich Linhart, Apiparn Borisuit

In sighted humans, light intensity, timing, exposure duration, and spectral composition of light are important to entrain the endogenous circadian pacemaker to the 24-h day-night cycle. We tested the impact of two realistic office lighting conditions durin ...

American Psychological Association2012

Régénération des friches urbaines et développement durable. Vers une évaluation intégrée à la dynamique du projet

Les préoccupations environnementales, socioculturelles et économiques liées au développement durable de l'environnement construit remettent clairement en cause les pratiques s'inscrivant dans une poursuite de l'étalement urbain. Dans ce contexte, la régéné ...

Presses Universitaires de Louvain, Collection « Lectures universitaires »2012

A new device for dynamic luminance mapping and glare risk assessment in buildings

Jean-Louis Scartezzini, Laurent Deschamps, Apiparn Borisuit

High dynamic range imaging has been shown to be a reliable tool to assess luminance maps and glare risk probability in buildings. However, there are some limitations of image capturing time, especially when dealing with highly dynamic and contrasted daylig ...

Spie-Int Soc Optical Engineering2012

Face Recognition with Disparity Corrected Gabor Phase Differences

We analyze the relative relevance of Gabor amplitudes and phases for face recognition. We propose an algorithm to reliably estimate offset point disparities from phase differences and show that disparity corrected Gabor phase differences are well suited fo ...

Springer Berlin2012

High-brightness polarized light-emitting diodes

Elison de Nazareth Matioli

Light-emitting diodes are becoming the alternative for future general lighting applications, with huge energy savings compared to conventional light sources owing to their high efficiency and reliability. Polarized light sources would largely enhance the e ...

Nature Publishing Group2012

Contrast Enhancement in Optical Coherence Microscopy

Christophe Pache

Optical Coherence Microscopy (OCM) is a three-dimensional imaging technique that provides cross-sectional views of the subsurface microstructure of biological tissue, with a high axial and lateral resolution. In OCM, a low time coherence light source is sp ...

EPFL2012

Intensity of Light Incident and Photoperiod of LED illumination based system on Scenedesmus vacuolatus growth

Christof Holliger, Christian Ludwig, Jean-Paul Schwitzguebel, Mariluz Bagnoud, Olivier Laurent Emery

The proposal of SunCHem project is to produce methane from the hydrothermal liquefaction of microalgal biomass and recovery high-value products in a bio-refinery concept. In this sense the Environmental Biotechnology Laboratory of EPFL (LBE) has developing ...

2012

Sustainable Lighting: An Introduction to the Environmental Impacts of Lighting

Marilyne Andersen

The intent of this Design Guide is to introduce the topic of sustainability, present its elements, and explain how it affects the design of lighting in process and product. This document is structured into two major sections. Section 1.0 introduces sustain ...

IES - Illuminating Engineering Society2012

Light-induced rearrangements of chemisorbed dyes on anatase(101)

Ulf Anders Hagfeldt

Photoinduced mol. rearrangements are important in daily events essential for life such as visual perception and photo-protection of light harvesting complexes in plants. In this study we demonstrate that similar photorearrangements appear in an analogous t ...

2012

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