Academic literature on the topic 'Semi-conducteur à large bande'

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Journal articles on the topic "Semi-conducteur à large bande"

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Baili, G., M. Alouini, D. Dolfi, and F. Bretenaker. "Laser semi-conducteur de classe A et de très faible bruit sur une large bande passante." Journal de Physique IV (Proceedings) 135, no. 1 (2006): 165–66. http://dx.doi.org/10.1051/jp4:2006135042.

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Naudan, F., C. Nicolas, and J. P. Huignard. "Filtrage des modes latéraux d'un laser semi-conducteur à cavité large par rétroinjection conjuguée." Annales de Physique 20, no. 5-6 (1995): 599–600. http://dx.doi.org/10.1051/anphys:199556030.

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Pan, Hengxing, Danail Obreschkow, Cullan Howlett, et al. "Multiwavelength consensus of large-scale linear bias." Monthly Notices of the Royal Astronomical Society 493, no. 1 (2020): 747–64. http://dx.doi.org/10.1093/mnras/staa222.

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ABSTRACT We model the large-scale linear galaxy bias bg(x, z) as a function of redshift z and observed absolute magnitude threshold x for broad-band continuum emission from the far-infrared to ultraviolet, as well as for prominent emission lines, such as the H α, H β, Ly a, and [O ii] lines. The modelling relies on the semi-analytic galaxy formation model galform, run on the state-of-the-art N-body simulation surfs with the Planck 2015 cosmology. We find that both the differential bias at observed absolute magnitude x and the cumulative bias for magnitudes brighter than x can be fitted with a
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Sloan, G. C., K. E. Kraemer, B. Aringer, et al. "Temporal Changes in the Infrared Spectra of Magellanic Carbon Stars." Galaxies 12, no. 5 (2024): 61. http://dx.doi.org/10.3390/galaxies12050061.

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A Medium-Resolution Spectrometer on a Mid-Infrared Instrument on the JWST obtained spectra of three carbon stars in the Large Magellanic Cloud. Two of the spectra differ significantly from spectra obtained ∼16–19 years earlier with the Infrared Spectrograph on the Spitzer Space Telescope. The one semi-regular variable among the three has changed little. The long-period Mira variable in the sample shows changes consistent with its pulsation cycle. The short-period Mira shows dramatic changes in the strength of its molecular absorption bands, with some bands growing weaker and some stronger. Whe
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Partamies, Noora, James M. Weygand, and Liisa Juusola. "Statistical study of auroral omega bands." Annales Geophysicae 35, no. 5 (2017): 1069–83. http://dx.doi.org/10.5194/angeo-35-1069-2017.

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Abstract. The presence of very few statistical studies on auroral omega bands motivated us to test-use a semi-automatic method for identifying large-scale undulations of the diffuse aurora boundary and to investigate their occurrence. Five identical all-sky cameras with overlapping fields of view provided data for 438 auroral omega-like structures over Fennoscandian Lapland from 1996 to 2007. The results from this set of omega band events agree remarkably well with previous observations of omega band occurrence in magnetic local time (MLT), lifetime, location between the region 1 and 2 field-a
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Marcati, Carmen Regina, Veronica Angyalossy, and Ray Franklin Evert. "SEASONAL VARIATION IN WOOD FORMATION OF CEDRELA FISSILIS (MELIACEAE)." IAWA Journal 27, no. 2 (2006): 199–211. http://dx.doi.org/10.1163/22941932-90000149.

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Cambial activity and periodicity of secondary xylem formation in Cedrela fissilis, a semi-ring-porous species, were studied. Wood samples were collected periodically from 1996 to 2000. The phenology was related to climate data of the region. The cambium has one active and one dormant period per year. The active period coincides with the wet season when trees leaf-out. The dormant period coincides with the dry season when trees lose their leaves. Growth rings are marked by parenchyma bands that begin to be formed, together with the small latewood vessels, just before the cambium becomes dormant
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Rahimi, Iraj, Lia Duarte, Wafa Barkhoda, and Ana Cláudia Teodoro. "Comparative Analysis of Non-Negative Matrix Factorization in Fire Susceptibility Mapping: A Case Study of Semi-Mediterranean and Semi-Arid Regions." Land 14, no. 7 (2025): 1334. https://doi.org/10.3390/land14071334.

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Semi-Mediterranean (SM) and semi-arid (SA) regions, exemplified by the Kurdo-Zagrosian forests in western Iran and northern Iraq, have experienced frequent wildfires in recent years. This study proposes a modified Non-Negative Matrix Factorization (NMF) method for detecting fire-prone areas using satellite-derived data in SM and SA forests. The performance of the proposed method was then compared with three other already proposed NMF methods: principal component analysis (PCA), K-means, and IsoData. NMF is a factorization method renowned for performing dimensionality reduction and feature extr
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Li, Zongrui, Jun Pan, Zhuoer Zhang, Mi Wang, and Likun Liu. "MTCSNet: Mean Teachers Cross-Supervision Network for Semi-Supervised Cloud Detection." Remote Sensing 15, no. 8 (2023): 2040. http://dx.doi.org/10.3390/rs15082040.

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Cloud detection methods based on deep learning depend on large and reliable training datasets to achieve high detection accuracy. There will be a significant impact on their performance, however when the training data are insufficient or when the label quality is low. Thus, to alleviate this problem, a semi-supervised cloud detection method, named the mean teacher cross-supervision cloud detection network (MTCSNet) is proposed. This method enforces both consistency and accuracy on two cloud detection student network branches, which are perturbed with different initializations, for the same inp
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Cabrera, Densil, Shuai Lu, Jonothan Holmes, and Manuj Yadav. "Sound Reflections in Indian Stepwells: Modelling Acoustically Retroreflective Architecture." Acoustics 4, no. 1 (2022): 227–47. http://dx.doi.org/10.3390/acoustics4010014.

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Retroreflection is rarely used as a surface treatment in architectural acoustics but is found incidentally with building surfaces that have many simultaneously visible concave right-angle trihedral corners. Such surfaces concentrate reflected sound onto the sound source, mostly at high frequencies. This study investigated the potential for some Indian stepwells (stepped ponds, known as a kund or baori/baoli in Hindi) to provide exceptionally acoustically retroreflective semi-enclosed environments because of the unusually large number of corners formed by the steps. Two cases—Panna Meena ka Kun
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Ayres, J. F., R. D. Murison, A. D. Turner, and S. Harden. "A rapid semi-quantitative procedure for screening hydrocyanic acid in white clover (Trifolium repens L.)." Australian Journal of Experimental Agriculture 41, no. 4 (2001): 515. http://dx.doi.org/10.1071/ea97069.

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The presence of cyanogenic glucosides in white clover (Trifolium repens L.) is an anti-nutritional factor due to the potential for cyanide to pre-dispose selenium deficiency in grazing animals. Considerable genotypic variation in cyanogenesis occurs in white clover and it is important that highly cyanogenic white clover lines are identified to ensure that germpasm used in breeding programs does not lead to the release of cultivars that exceed safe levels. A procedure for rapid semi-quantitative screening of large white clover germplasm collections is described. This procedure is based on the p
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Dissertations / Theses on the topic "Semi-conducteur à large bande"

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Forster, Simon. "Nouveau matériau semi-conducteur à large bande interdite à base de carbures ternaires - Enquête sur Al4SiC4." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAI095.

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Les matériaux semi-conducteurs à large bande interdite sont capables de résister aux environnements difficiles et de fonctionner dans une large plage de températures. Celles-ci sont idéales pour de nombreuses applications telles que les capteurs, la haute puissance et les radiofréquences.Cependant, des matériaux plus nouveaux sont nécessaires pour atteindre une efficacité énergétique significative dans diverses applications ou pour développer de nouvelles applications destinées à compléter les semi-conducteurs à bande interdite tels que le GaN et le SiC.Dans cette thèse, trois méthodes différe
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Pacuski, Wojciech. "Spectroscopie optique de semi-conducteurs magnétiques dilués à large bande interdite, à base de ZnO et GaN." Phd thesis, Grenoble 1, 2007. http://www.theses.fr/2007GRE10310.

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Ce travail porte sur la spectroscopie magnéto-optique de semi-conducteurs magnétiques dilués (DMS) : ZnO et GaN dopés manganese, fer et cobalt. Les deux semi-conducteurs hôtes, ZnO et GaN ont une grande bande interdite, une structure wurtzite, une faible interaction spin - orbite et une forte interaction d'échange excitonique entre trous et électrons. En présence de champs magnétiques, les ions magnétiques induisent un effet Zeeman géant dont l'interprétation est complexe : les excitons s'anti-croisent et leurs énergies de transition et leurs forces d'oscillateur sont fortement influencées par
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Pacuski, Wojciech. "Spectroscopie optique de semi-conducteurs magnétiques dilués à large bande interdite, à base de ZnO et GaN." Phd thesis, Université Joseph Fourier (Grenoble), 2007. http://tel.archives-ouvertes.fr/tel-00296634.

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Ce travail porte sur la spectroscopie magnéto-optique de semi-conducteurs magnétiques dilués (DMS) : ZnO et GaN dopés manganese, fer et cobalt. Les deux semi-conducteurs hôtes, ZnO et GaN ont une grande bande interdite, une structure wurtzite, une faible interaction spin - orbite et une forte interaction d'échange excitonique entre trous et électrons. En présence de champs magnétiques, les ions magnétiques induisent un effet Zeeman géant dont l'interprétation est complexe : les excitons s'anti-croisent et leurs énergies de transition et leurs forces d'oscillateur sont fortement influencées par
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Fisne, Christophe. "Métasurfaces actives pour applications large bande." Thesis, Toulouse, INPT, 2020. http://www.theses.fr/2020INPT0086.

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Les métasurfaces offrent des propriétés électromagnétiques particulières permettant de générer des indices de réfraction inhabituels, produire des bandes électromagnétiques interdites, ou encore créer des surfaces à haute-impédance. Ces dernières, aussi nommées « Artificial Magnetic Conductor (AMC) » sont particulièrement intéressantes dans le domaine antennaire. En effet elles permettent de réduire les couplages de divers éléments rayonnants, mais aussi de miniaturiser les antennes comportant un plan réflecteur. Cependant, leur bande de fonctionnement inférieure à 10%, les rend souvent incomp
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Bouffaron, Renaud. "Modélisation et Réalisation de Réseaux Sub-Longueur d'Onde :Application au Contrôle de la Réflectivité Large Bande, Large Incidence." Phd thesis, Université Paul Cézanne - Aix-Marseille III, 2008. http://tel.archives-ouvertes.fr/tel-00353626.

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Les antireflets permettent d'accroître l'efficacité des cellules photovoltaïques, d'augmenter la sensibilité des détecteurs optroniques, et même d'améliorer l'extraction lumineuse des diodes électroluminescentes. Traditionnellement, des empilements de matériaux en couches minces sont utilisés pour les fabriquer. Nous avons étudié une technique alternative qui s'appuie sur la microstructuration de l'interface air-substrat. Il s'agit, plus précisément, de modéliser et de fabriquer des surfaces microstructurées bi-périodiques sur silicium et sur germanium présentant un effet antireflet très effic
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Regnat, Guillaume. "Onduleur à forte intégration utilisant des semi-conducteurs à grand gap." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAT050/document.

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Les composants semi-conducteurs à base de matériaux à grand gap (SiC et GaN) présentent des caractéristiques intéressantes pour la réalisation de convertisseurs d’électronique de puissance toujours plus intégrés. Cependant, le packaging des composants traditionnels en silicium ne semble plus adapté pour ces nouveaux composants et apparaît même comme un facteur limitant. Le développement d’un packaging adapté aux caractéristiques des composants à grand gap est alors nécessaire. Les travaux développés dans cette thèse proposent un nouveau packaging tridimensionnel basé sur un procédé de fabricat
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Grelier, Michael. "Miniaturisation des antennes large bande à l'aide de matériaux artificiels." Phd thesis, Télécom ParisTech, 2011. http://pastel.archives-ouvertes.fr/pastel-00574620.

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Dans le domaine de la guerre électronique, la maîtrise du spectre électromagnétique est primordiale. Les antennes doivent donc posséder une couverture fréquentielle extrêmement large. Leur bande de fréquences de fonctionnement peut dépasser la décade, i.e. un rapport 10 entre fréquences haute et basse. De plus, la fréquence basse peut être voisine de la centaine de MHz augmentant de ce fait l'encombrement de l'antenne dans le sens de l'épaisseur. L'intégration d'antenne bande basse sur porteur constitue donc un enjeu majeur. Les antennes classiques dédiées a la guerre électronique font habitue
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Raboin, Jean-Christophe. "Complexes de métaux de transition pour la photosensibilisation de semi-conducteurs à large bande interdite." Metz, 1999. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1999/Raboin.Jean_Christophe.SMZ9940.pdf.

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Des ligands tridentates de la famille des terpyridines et des analogues cyclométallants ainsi que des ligands bidentates 5-(2-pyridyl)-tétrazoles sont préparés. Ces ligands sont fonctionnalisés par des acides carboxyliques vicinaux pour obtenir une bonne fixation et un transfert de photoélectron maximum sur TiO2 ou par des coumarines condensées pour augmenter l'efficacité de captation de la lumière et accéder à des états excités de plus basse énergie. Les ligands sont utilisés pour coordiner des cations de Ru, Fe et Rh. Des problèmes de décarboxylation sélective ou d'absence de cyclométallatio
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Vigué, Florence. "Optoélectronique visible et ultraviolette à base de semi-conducteurs II-VI à large bande interdite." Nice, 2001. http://www.theses.fr/2001NICE5632.

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Depuis plusieurs années, un effort de recherche important est consacré aux semi-conducteurs à large bande interdite pour leur applications optoélectroniques. Les principaux objectifs sont la réalisation de détecteurs ultraviolet (UV) et la fabrication de diodes laser émettant dans le bleu ou l'UV. C'est avec cet objectif que nous avons étudié les composés II-VI à base de ZnSe et ZnO. Des photodétecteurs UV en ZnSe et (Zn,Mg,Be,Se) sont tout d'abord décrits. Trois types de structures ont été fabriquées avec de bonnes performances. Il s'agit des photodiodes p-i-n, à barrière Schottky et métal-se
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Kaddour, Darine. "Conception et réalisation de filtres RF passe-bas à structures périodiques et filtres Ultra Large Bande, semi localisés en technologie planaire." Phd thesis, Grenoble 1, 2007. http://www.theses.fr/2007GRE10095.

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La technologie planaire constitue une technologie attrayante pour la réalisation de filtres, en terme de coût, de volume, ainsi que des possibilités d'intégration. Dans ce contexte, le développement de filtres planaires sélectifs et peu encombrants est à l'heure actuelle un domaine d'activité d'un intérêt fondamental. Les travaux présentés dans ce manuscrit s'inscrivent dans cet axe de recherche. Après un état de l'art sur les différentes familles de filtres planaires, une nouvelle topologie de filtre passe-bas compact, constituée d'une ligne de propagation périodiquement chargée par des capac
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Books on the topic "Semi-conducteur à large bande"

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1921-, Bhargava Rameshwar Nath, ed. Properties of wide bandgap II-VI semiconductors. INSPEC, Institute of Electrical Engineers, 1997.

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J, Pearton S., ed. Wide bandgap semiconductors: Growth, processing and applications. Noyes Publications, 2000.

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Properties of Wide Bandgap Ii-VI Semiconductors (E M I S Datareviews Series). Institution of Electrical Engineers, 1997.

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Litvinov, Vladimir. Wide Bandgap Semiconductor Spintronics. Jenny Stanford Publishing, 2016.

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Wide Bandgap Semiconductor Spintronics. Taylor & Francis Group, 2016.

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Litvinov, Vladimir. Wide Bandgap Semiconductor Spintronics. Jenny Stanford Publishing, 2016.

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Wide Bandgap Semiconductor Spintronics. Jenny Stanford Publishing, 2024.

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Characterization of Wide Bandgap Power Semiconductor Devices. Institution of Engineering & Technology, 2018.

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Wang, Fei, Zheyu Zhang, and Edward A. Jones. Characterization of Wide Bandgap Power Semiconductor Devices. Institution of Engineering & Technology, 2018.

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Ohshima, Takeshi, Hiroshi Yano, Kazuma Eto, Shinsuke Harada, and Takeshi Mitani. Silicon Carbide and Related Materials 2019. Trans Tech Publications, Limited, 2020.

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Book chapters on the topic "Semi-conducteur à large bande"

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Benabdelouahab, Tarik, Hayat Lionboui, Rachid Hadria, Riad Balaghi, Abdelghani Boudhar, and Bernard Tychon. "Support Irrigation Water Management of Cereals Using Optical Remote Sensing and Modeling in a Semi-Arid Region." In Geospatial Technologies for Effective Land Governance. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-5939-9.ch008.

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Irrigated agriculture is an important strategic sector for Morocco, contributing to food security and employment. Nowadays, irrigation scheme managers shall ensure that water is optimally used. The main objective was to support the irrigation monitoring and management of wheat in the irrigated perimeter using optical remote sensing and crop modeling. The potential of spectral indices derived from SPOT-5 images was explored for quantifying and mapping surface water content changes at large scale. Indices were computed using the reflectance in red, near infrared, and shortwave infrared bands. A
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Brocx, Margaret, Vic Semeniuk, Tom J. Casadevall, and Dan Tormey. "Volcanoes: Identifying and Evaluating Their Significant Geoheritage Features from the Large to Small Scale." In Updates in Volcanology - Transdisciplinary Nature of Volcano Science. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97928.

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Across the globe, volcanoes and volcanic terrains present one of the most complex geological systems on Earth that, depending on magma type, viscosity, and water and gas content, form a diverse range of products in terms of geomorphology, lithologic suites, structures, and stratigraphy. In broad terms, magmas, with their diagnostic composition, derive from specific tectonic settings, e.g., basalt-dominated oceanic crusts, acidic magma from continental plates, and andesitic convergent-plate margins. In addition to magma composition and volcanic rock types, there is a wide range of volcanic prod
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Ordóñez, Diego, Carlos Dafonte, Bernardino Arcay, and Minia Manteiga. "Connectionist Systems and Signal Processing Techniques Applied to the Parameterization of Stellar Spectra." In Soft Computing Methods for Practical Environment Solutions. IGI Global, 2010. http://dx.doi.org/10.4018/978-1-61520-893-7.ch012.

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A stellar spectrum is the finger-print identification of a particular star, the result of the radiation transport through its atmosphere. The physical conditions in the stellar atmosphere, its effective temperature, surface gravity, and the presence and abundance of chemical elements explain the observed features in the stellar spectra, such as the shape of the overall continuum and the presence and strength of particular lines and bands. The derivation of the atmospheric stellar parameters from a representative sample of stellar spectra collected by ground-based and spatial telescopes is esse
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Conference papers on the topic "Semi-conducteur à large bande"

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Partovi, Afshin, Alan Kost, Elsa m. Garmire, George C. Valley, and Marvin B. Klein. "Band edge photorefractive effect in GaAs." In OSA Annual Meeting. Optica Publishing Group, 1989. http://dx.doi.org/10.1364/oam.1989.mcc1.

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Photorefractive semiconductors have short response times and high sensitivity in the infrared; however, their relatively small electrooptic coefficients are a disadvantage for many devices. One possible solution is to operate at wavelengths closer to the band edge, where the electrooptic coefficient is larger and other nonlinearities may contribute. We have investigated for the first time the photorefractive effect near the band edge of a compound semiconductor. We present measurements of the wavelength dependence of the two-beam coupling gain in semi-insulating GaAs. A large increase in the a
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Partovi, A., A. M. Glass, D. H. Olson, et al. "High sensitivity resonant photorefractive effect in semi-insulating CdZnTe/ZnTe multiple quantum wells." In Photorefractive Materials, Effects, and Devices II. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/pmed.1991.mc1.

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Although the photorefractive sensitivity of the semiconductors is many orders of magnitude larger than the oxides, their small Pockels electro-optic coefficient has been a serious drawback. By taking advantage of the quadratic effects near the band-edge, nonlinearity and sensitivity of semiconductor photorefractivcs can be dramatically improved. Recently, two-beam-coupling gain coefficients of 16.3 cm−1 in GaAs [1] and 26.0 cm−1 in InP [2] have been reported near the band-edge. Quantum confinement of excitons in multiple quantum wells (MQWs) provides an additional enhancement of the resonant e
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Chen, Cheng, and James M. Ricles. "Experimental Evaluation of an Adaptive Actuator Control Scheme for Real-Time Tests of Large-Scale Magneto-Rheological Damper Under Variable Current Inputs." In ASME 2009 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2009. http://dx.doi.org/10.1115/smasis2009-1302.

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A Magneto-Rheological (MR) fluid damper is a semi-active device for vibration control of engineering structures subjected to dynamic loading. The characteristics of MR dampers vary under different current inputs to achieve optimized vibration control of structural systems. Experimental evaluation of MR dampers under different control laws is necessary before the device can be accepted by the practical design community. Real-time hybrid simulation provides an economical and efficient dynamic testing technique by accounting for the damper rate-dependency and the damper-structure interaction. A s
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Zhang, Qinqiang, Meng Yang, Ken Suzuki, and Hideo Miura. "Highly Sensitive Strain Sensor Using Dumbbell-Shape Graphene Nanoribbon." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70318.

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A nano-scale strip of graphene is known as graphene nano-ribbon (GNR). Previous studies have shown that the armchair-type GNR (aGNR) can open the electronic band gap at room temperature, and the band gap increases monotonically with the decrease in the width of aGNR. The critical width at which aGNR shows semi-conductive characteristics at room temperature is about 70 nm, when it is passivated by hydrogen on both sides. However, the electronic band structure varies frequently as a function of the number of carbon atoms along its width direction. In order to decrease the large variation of the
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Martinazzo, Ana, and Nina Sumiko Tomita Hirata. "Multiband image classification of astronomical objects." In XXXII Conference on Graphics, Patterns and Images. Sociedade Brasileira de Computação - SBC, 2019. http://dx.doi.org/10.5753/sibgrapi.est.2019.8314.

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Astronomy has entered the era of large digital sky surveys, transitioning from a relatively data-scarce field of study to a very data-rich one. The images coming from these new surveys are hyperspectral (having up to a few dozen bands) and noisy (due to limitations on telescope resolution and atmospheric conditions), present faint and saturated signals, and can amount to tens of terabytes. This unique set of characteristics make them very attractive for trying out deep learning methods. In this short paper, we present a multiband image classifier for stars, galaxies and quasars, and propose st
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Simos, Alexandre N., Joa˜o V. Sparano, Jose´ A. P. Aranha, and Vini´cius L. F. Matos. "2nd Order Hydrodynamic Effects on Resonant Heave, Pitch and Roll Motions of a Large-Volume Semi-Submersible Platform." In ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57430.

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During the last decades, as oil production offshore Brazil moved to deeper waters, technical and economical constraints led to a new generation of floating platforms. Nowadays, in the Brazilian offshore scenario, design trends concerning hull form, size and mooring configurations bring novel characteristics of wave-induced dynamics, including non-linear resonant effects. As part of an extensive study on new semi-submersible configurations for Campos basin, recent model tests have shown that their hulls may be subjected to second-order slow motions in heave, pitch and roll. These resonant motio
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Watanuki, Keiichi, Tetsuhiro Suzuki, Yusuke Osawa, Kazunori Kaede, and Shinsuke Kazama. "Automatic Generation of AI-based Cancer Pathology Data and Highly Accurate Colorectal Cancer Pathology Diagnosis Support." In 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022). AHFE International, 2022. http://dx.doi.org/10.54941/ahfe1001787.

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Owing to the increase in the number of pathological diagnoses and the shortage of pathologists, the burden on pathologists has been increasing. Accordingly, support systems are expected to be utilized for analyzing pathological images using deep learning to reduce the burden on pathologists. However, the deep learning model needs to be trained using a dataset consisting of a large number of cases, to improve its performance. However, the creation of such a dataset is labor-intensive and time-consuming. Thus, an efficient method for creating datasets is required to create large datasets for fut
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Han, Sang-Kook, Ramakant Srivastava, and Ramu V. Ramaswamy. "Determination of refractive index of MBE grown InGaAlAs from composition." In Integrated Photonics Research. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/ipr.1991.tud14.

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Recently the InGaAlAs system has attracted considerable attention since its band-gap can be tuned over a relatively large wavelength-range (0.85-1.60μm) by varying the ratio of Ga to Al. Moreover, this material system is a promising alternative to InGaAsP for the fabrication of laser diodes emitting at 1.55μm. Inspite of the growing interest in this material system, very little work has been reported on its refractive index and material dispersion.1,2 In this paper, we develop semi-empirical relations to predict the refractive index and material dispersion of bulk In0.53Ga0.47-yAlyAs in the tr
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Ziari, Mehrdad, William H. Steier, Marvin B. Klein, and Sudhir Trivedi. "Photorefractive properties and alternating electric field gain enhancement of vanadium-doped cadmium telluride and related compounds." In Photorefractive Materials, Effects, and Devices II. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/pmed.1991.tua6.

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Recent studies of the photorefractive response of CdTe have demonstrated it to be a highly sensitive material with a broad near infrared sensitivity extending to beyond 1.5 μm[1,2]. Desirable parameters, such as large electrooptic coefficient, small dielectric constant, large carrier mobility and availability in semi-insulating form, makes CdTe a potential material of choice for many applications[3]. This study focuses on photorefractive characterization of Bridgeman grown crystals with the goal of providing the information that can lead to the optimization of key photorefractive parameters. W
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Zhao, Qichao, Ran Yang, Xiaoqing Zhu, et al. "Systematic Comparison of Signal Quality in Portable and Wearable Wireless EEG Devices: Methods and Standards." In 15th International Conference on Applied Human Factors and Ergonomics (AHFE 2024). AHFE International, 2024. http://dx.doi.org/10.54941/ahfe1004813.

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Electroencephalography (EEG) is a technique that captures the electrical activity of the cerebral cortex, effectively reflecting various rapid cognitive processes. Traditional EEG devices, often large and bulky, are impractical for real-world applications. To address this, wearable and wireless EEG systems have been developed as cutting-edge technology. However, there remains uncertainty about their signal quality .In this study, we introduce a systematic comparison method customized for portable wireless EEG devices. This experiment includes three tasks: α-suppression, Biofeedback, and the St
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