Search results for "lighting"
showing 10 items of 140 documents
Luce per rivivere… Alla scoperta di Baetulo, Catalogna / Light to relive…Discovering Baetulo, Catalonia
2013
L'illuminazione artificiale deve rientrare a pieno titolo nelle competenze di quanti siano impegnati ad affrontare la questione della valorizzazione dei siti archeologici, specialmente nell’area mediterranea. Negli ultimi decenni, infatti, abbiamo assistito a una progressiva apertura e proiezione verso il mondo esterno di quelli che possiamo definire i “luoghi della memoria”. Artificial lighting needs to return with full titles in the expertize of those committed to tackle the issue of enriching archeological sites, especially in the mediterranean area. As a matter of fact, in the last ten years, we have aided an openminded progression towards the external world of those who we can call “pl…
Luce per comunicare. I colori in tre importanti siti archeologici della Catalogna
2011
La volontà di restituire alla collettività la lettura storica della città del passato ha fatto sì che nei siti archeologici della Catalogna la luce fosse utilizzata per consentire ai cittadini di riappropriarsi della propria identità e ai turisti di comprenderne la storia. Ai visitatori tutti, in generale, è data la possibilità di godere delle rovine delle città, non solo per quanto riguarda il valore estetico aggiunto, ma anche, e soprattutto, per l’aspetto didattico del tipo d’intervento realizzato.
Toothguide Training Box for Dental Color Choice Training
2011
The purpose of this study was to evaluate the use of the Toothguide Training Box (TTB) for training dental students in color identification. The seventy-four volunteers who took part in the study attended a seminar on the Vita 3D Master Guide (MG) and the TTB system as well as a demonstration of the equipment before training began. At the end of the training they took the TTB final test. In addition, the participants were asked to recognize ten MG shade tabs in a blind manner before and after TTB training. The training times and percentages of correct answers were compared using the paired t-test. Variations in scores with training times and percentages of correct answers before and after t…
Les impacts sanitaires de la lumière artificielle nocturne - Un état des lieux des connaissances et des hypothèses
2008
Face à la lumière artificielle nocturne (LAN - Light At Night - dans la littérature médicale), la recherche clinique n'en est qu'à ses prémices, dans une situation comparable à celle dans laquelle elle se trouvait face à la pollution par le bruit il y a une trentaine d'années. Pour autant, les scientifiques s'intéressent de plus en plus aux impacts que l'éclairage artificiel peut avoir sur la santé humaine par le biais d'un dérèglement des rythmes circadiens (d'environ 24 heures - du latin circa, environ, et dies, jour), cycles biologiques souvent " calés " sur l'alternance naturelle d'un jour et d'une nuit. Pour l'être humain, comme pour la plupart des espèces complexes, cette rythmicité j…
Innovative Approaches for Light-Emitting Electrochemical Cells
2023
El uso de nuevos materiales, como las moléculas emisoras de luz o los polímeros transportadores de iones, tiene una importancia fundamental a la hora de mejorar la vida útil o de conseguir altos niveles de luminancia en dispositivos de tipo LEC. Al mismo tiempo, los avances más recientes han llevado a la tecnología LED y OLED a una nueva clase de dispositivos con propiedades atractivas, como la flexibilidad o la transparencia, desarrollo que se ha llevado a cabo de forma muy limitada en los LECs. Teniendo esto en cuenta, el trabajo de esta Tesis se centró en la implementación de nuevos materiales, en particular nuevos emisores iTMC y un polímero conductor iónico, y el diseño y fabricación d…
Cost optimal analysis of lighting retrofit scenarios in educational buildings in Italy
2017
Abstract The European Energy Performance of Buildings Directive (EPBD) recast proposes, a comparative methodology to calculate cost-optimal levels of minimum energy performance requirements for buildings. This paper presents a method able to select the best retrofit action for lighting system, selectively analysing the daylight conditions and applying the cost-optimal methodology for different scenarios proposed for two existing educational buildings located in Italy. With the aim to improve both energy efficient and visual comfort conditions, the retrofit scenarios include lighting solutions with different combinations. They consider the replacement of lamps with more efficient lighting so…
Active lighting applied to three-dimensional reconstruction of specular metallic surfaces by polarization imaging
2006
International audience; In the field of industrial vision, the three-dimensional inspection of highly reflective metallic objects is still a delicate task. We deal with a new automated three-dimensional inspection system based on polarization analysis. We first present an extension of the shape-from-polarization method for dielectric surfaces to metallic surfaces. Then, we describe what we believe to be a new way of solving the ambiguity concerning the normal orientation with an active lighting system. Finally, applications to shape-defect detection are discussed, and the efficiency of the system to discriminate defects on specular metallic objects made by stamping and polishing is presente…
Ideologie e culture della vendita: luci e spazi al supermercato
2022
This paper investigates the role of lighting in the quintessential commercial place: the supermarket. The aim of the article is to understand how lights contribute to construct the sense of a place and to define the supermarket as a text. Supermarket's system of illumination reveals the construcion of a framed text the connect fresh products with canned product. From a structuralistic pont of view, both industrial and organic supermarkets will be considered as the different treatment of lighting gives rise ti twi opposing ideologies of sale and consumption.
Understanding the White-Emitting CaMoO4 Co-Doped Eu3+, Tb3+, and Tm3+ Phosphor through Experiment and Computation
2019
In this article, the synthesis by means of the spray pyrolysis method, of the CaMoO4 and rare-earth cation (RE3+)-doped CaMoO4:xRE3+ (RE3+ = Eu3+, Tb3+, and Tm3+; and x = 1, 2, and 4% mol) compounds, is presented. The as-synthesized samples were characterized using X-ray diffraction, Rietveld refinement, field emission scanning electron microscopy (FE-SEM), Raman spectroscopy, and photoluminescence (PL) spectroscopy. To complement and rationalize the experimental results, first-principles calculations, at the density functional theory level, have been performed to analyze the band structure and density of states. In addition, a theoretical method based on the calculations of surface energie…
L’illuminazione notturna per valorizzare Pompei
2014
Il caso seguente indagato è di particolare importanza perché riguarda l'applicazione di strategie di intervento, facenti parte di un approccio multidisciplinare volto a trovare un modo per "sfruttare" le antiche meraviglie di Pompei, attraverso l'uso della luce. Le esperienze progettuali e le sperimentazioni sono state effettuate con la Soprintendenza Archeologica di Pompei. Le caratteristiche degli impianti di illuminazione e il modo di uso sono state valutate da esperti, studiosi e tecnici, ma anche da parte dei visitatori che hanno espresso il loro punto di vista, compilando questionari a conclusione della visita del sito. The following case investigated is of particular importance becau…