3,212 research outputs found
Estudo de 434 casos de corpos estranhos corneias no Hospital Universitário da Universidade Federal de Santa Catarina
No full textTrabalho de Conclusão de Curso - Universidade Federal de Santa Catarina. Curso de Medicina. Dapartamento de Clínica Cirúrgica
Synthesis optimization and charge carrier transfer mechanism in LiLuSiO<sub>4</sub>:Ce, Tm storage phosphor
No full textLiLuSiO4:Ce and LiLuSiO4:Ce, Tm show very efficient charge carrier storage properties upon beta irradiation after samples have received treatment in vacuum. They outperform the commercial storage phosphor BaFBr(I):Eu2+ in many aspects. The influence of the synthesis conditions, Ce and Tm concentration, nonstoichiometry and codoping with Ca, Hf, Al and Ge are reported. Based on the results of the synthesis optimization, thermoluminescence (TL) emission and TL excitation spectra a mechanism of charge carrier transfer, storage, and recombination during irradiation and thermal or optical readout is proposed.Accepted Author ManuscriptRST/Fundamental Aspects of Materials and EnergyRST/Luminescence Material
Etude quantitative des relations constituants minéralogiques-réflectance diffuse des latosols brésiliens : application à l'utilisation pédologique des données satellitaires TM (région de Brasilia)
No full textDes échantillons de latosols brésiliens, présentant une large gamme de variation de teneurs en goethite, hématite, gibbsite et kaolinite, sont utilisés pour étudier les relations quantitatives entre composants minéralogiques et réflectance diffuse mesurée au spectrophotomètre dans le domaine du visible au proche et moyen infrarouge (400 à 25000nm). L'intensité des événements spectraux et des indices dérivés des bandes TM, simulées à partir des spectres de réflectance, ont été corrélés aux teneurs des minéraux dans les sols. Des données satellitaires de la région de Brasilia (scène TM 221-71 du 10/10/1987) sont utilisées pour valider les indices développés. On propose trois nouveaux indices radiométriques : l'indice de texture ITx(TM)=TM5-TM7/TM5+TM7; l'indice d'hématite IHm(TM); l'indice ferrique IFe(TM)=TM3-TM2/TM3+TM2. L'application aux données TM montre la pertinence des ces indices pour l'évaluation quantitative de la texture, de la teneur en hématite et du rapport hématite/hématite+goethite des latosols. On discute les effets de la matière organique, de la taille des particules, aussi bien que de l'humidité; des travaux culturaux (rugosité) ou de la présence de résidus végétaux pour préciser les conditions d'application des indices radiométriques proposés. (Résumé d'auteur
Links between the sentence intonation and the melody of caipira songs in small cities of São Paulo State
No full textEsta dissertação busca compreender a relação entoacional entre duas modalidades de voz, a voz falada e a voz cantada de falantes do interior de São Paulo. Desta forma, o que se busca averiguar é o elo entre a entoação frasal e a melodia de músicas caipiras da dupla Mandi e Sorocabinha da cidade de Piracicaba, ambos do sexo masculino. O modelo de análise adotado foi proposto por Ferreira Netto (2006), que analisou a prosódia da língua portuguesa considerando a frequência fundamental (f0) como uma série temporal. Os dados foram obtidos em materiais disponibilizados na plataforma YouTube e foram analisados pelo aplicativo ExProsodia. Como unidade de análise, observou-se a curva da f0 com foco nas finalizações (TM e TF) das frases, tanto no canto, quanto na fala dos cantores. Foram no total 8 amostras, sendo 8 canções e 2 entrevistas. A quantidade de dados analisados soma o total de 14 frases afirmativas, escolhidas por apresentarem uma ordem sintática direta (quando possível). O recorte das frases deu-se a partir da própria percepção da pesquisadora, na avaliação de sentenças mais espontâneas. Os resultados obtidos apontaram para uma relação não significativa, neste corpus, de forma a abrir caminho para a ampliação dos dadosThe aim of this study is to verify the intonational relationship between two voice modalities: spoken voice and sung voice of speakers from the interior of São Paulo. In order to describe the relationship between the sentence intonation and the melody of Caipira songs performed by the male duo Mandi and Sorocabinha, from the city of Piracicaba, we used the analysis model proposed by Ferreira Netto (2006), who examined the Brazilian Portuguese prosody considering the fundamental frequency (f0) as a time series. Data was collected in songs and interviews available on YouTube and analyzed using the software ExProsodia. The f0 curve was observed focusing on finalizations (TM and TF) of phrases in both singing and speech. A total of 8 samples were analyzed, consisting of 8 songs and 2 interviews. The dataset includes 14 declarative sentences, selected for their direct syntactic order (when possible). The sentences chosen were based on the researcher\'s perception of more spontaneous utterances. The results pointed out that there is no significant relationship in this corpus, suggesting the need for further data expansio
GA Landsat 5 TM Analysis Ready Data Collection 3
No full textMaintenance and Update Frequency: asNeededStatement: This product is derived from the USGS Landsat Collection 1 archive.
The Moderate Resolution Imaging Spectroradiometer (MODIS) MCD43A1 Version 6 Bidirectional Reflectance Distribution Function and Albedo (BRDF/Albedo) Model Parameters dataset was provided by the National Aeronautics and Space Administration (NASA). It was produced daily using 16 days of Terra and Aqua MODIS data at 500 m resolution.
The ozone data was provided by Environment Canada.
The Aerosol Optical Thickness data was provided by the Commonwealth Scientific and Industrial Research Organisation (CSIRO).
The Precipitable Water for Entire Atmosphere data was provided by the National Oceanic and Atmospheric Administration (NOAA) / Earth System Research Laboratory (ESRL) / Physical Sciences Division (PSD).
The baseline Digital Surface Model (DSM) data produced from the Shuttle Radar Topography Mission (SRTM) was provided by the National Geospatial-Intelligence Agency (NGA).
Level 1 Collection 1 data was provided by the United States Geological Survey (USGS)'s Earth Resources Observation and Science (EROS) Center.<b>BACKGROUND</b><br/><p><br/><p>The United States Geological Survey's (USGS) Landsat satellite program has been capturing images of the Australian continent for more than 30 years. This data is highly useful for land and coastal mapping studies. <br/><p>In particular, the light reflected from the Earth’s surface (surface reflectance) is important for monitoring environmental resources – such as agricultural production and mining activities – over time. <br/><p>We need to make accurate comparisons of imagery acquired at different times, seasons and geographic locations. However, inconsistencies can arise due to variations in atmospheric conditions, sun position, sensor view angle, surface slope and surface aspect. These need to be reduced or removed to ensure the data is consistent and can be compared over time. <br/><p> </p><br/><b>WHAT THIS PRODUCT OFFERS</b><br/><p><br/><p>GA Landsat 5 TM Analysis Ready Data Collection 3 takes Landsat 5 Thematic Mapper (TM) imagery captured over the Australian continent and corrects for inconsistencies across land and coastal fringes. The result is accurate and standardised surface reflectance data, which is instrumental in identifying and quantifying environmental change. <br/><p><br/><p>The TM instrument is an advanced, multispectral scanning, Earth resources sensor which is designed to categorise the Earth's surface. It is particularly useful for agricultural applications and identification of land use. <br/><p><br/><p>This product is a single, cohesive Analysis Ready Data (ARD) package, which allows you to analyse surface reflectance data as is, without the need to apply additional corrections. <br/><p><br/><p>It contains three sub-products that provide corrections or attribution information:<br/><p><br/><p> 1) GA Landsat 5 TM NBAR Collection 3 <br/><p> 2) GA Landsat 5 TM NBART Collection 3<br/><p> 3) GA Landsat 5 TM OA Collection 3<br/><p><br/><p>The resolution is a 30 m grid based on the USGS Landsat Collection 1 archive
The dependence of light extraction improvement on optimized surface microstructure for AlGaN-based UVC-LEDs considering TM-polarized emission
No full textIn order to improve the light extraction of AlGaN-based short wavelength ultraviolet light emitting diodes (DUC-LEDs), a type of microstructure with high aspect ratio is introduced and optimized on the AlN substrate surface. And, particle swarm optimization (PSO) algorithm is used to inverse design of the surface microstructure to maximize the light extraction efficiency (LEE). Considering that the propagation characteristics of TM-polarized light are different from that of TE-polarized light, the optical field distribution and LEE is analyzed for the UVC-LEDs with different TE-polarized component when the optimized surface microstructure is applied. Furthermore, the preparation process tolerance of the high aspect ratio structure is discussed by calculating the LED's LEE when the structural deviation occurs or morphology changes. Simulation results show that, by using the optimized surface microstructure based on parabola cone array, the LEDs' LEE is increased from 4.4% to 8.7% and from 0.4% to 3.7% for TE-polarized and TM-polarized emission, respectively. In addition, it is demonstrated that the light extraction improvement by the surface microstructure has a good tolerance to the structural deviation and morphology. The results are significant for improving light extraction and realizing high efficient short wavelength AlGaN-based UVC-LEDs by designing surface microstructures.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.ImPhys/Esmaeil Zadeh grou
Rigor and relevance in empirical TM research: Key issues and challenges Author links open overlay panel
No full textThis paper aims to offer a critical reflection on the way Talent Management (TM) is investigated in practice, by addressing the key issues regarding the quality (in terms of rigor and relevance) of academic empirical TM research and therefore the critical scrutiny of TM scholars’ work. We will argue that despite the growth in the quantity, the quality of many empirical TM papers is lagging behind and hindering the progress of the academic field of TM. Based on a content analysis of 174 peer-reviewed articles published between 2006 and 2017, the paper outlines nine critical issues regarding the quality of the existent empirical TM research. In order to improve the positioning of the field as well as the impact of TM research on practice itis absolutely necessary for TM scholars to secure the quality of academic empirical TM research. Also, the collaboration between practitioners and scholars should increase.Peer ReviewedPostprint (author's final draft
Rigor and relevance in empirical TM research: Key issues and challenges Author links open overlay panel
No full textThis paper aims to offer a critical reflection on the way Talent Management (TM) is investigated in practice, by addressing the key issues regarding the quality (in terms of rigor and relevance) of academic empirical TM research and therefore the critical scrutiny of TM scholars’ work. We will argue that despite the growth in the quantity, the quality of many empirical TM papers is lagging behind and hindering the progress of the academic field of TM. Based on a content analysis of 174 peer-reviewed articles published between 2006 and 2017, the paper outlines nine critical issues regarding the quality of the existent empirical TM research. In order to improve the positioning of the field as well as the impact of TM research on practice itis absolutely necessary for TM scholars to secure the quality of academic empirical TM research. Also, the collaboration between practitioners and scholars should increase.Peer Reviewe
Dalla Biblioteca Comunale di Urbania: due raccolte musicali per un interprete
No full textIn the Library of Urbania (Marche, Italy) six musical manuscripts containing seventeenth century arias and cantatas are preserved. They belonged to an aristocratic family of Apecchio, (Marche), the Ubaldini. This article investigates two of them containing cantatas by Cossoni, Giovanni Bonaventura Viviani, Legrenzi Bassani and others, and in which there is the note “ex libris Antonij Barbarini”. This article reconstructs the origin of these two manuscripts, for whom the author individuated the probable owner, the singer Ippolito Fusai, by means the repertory identified in it. A thorough investigation of this hitherto little-known manuscripts may shed new light on the diffusion and transmission of music in Italy during the Seventeenth and early-Eighteenth centurie
Perception and ExProsodia®: correlation between automatic analysis and finalization of isolated assertive phrases in Brazilian Portuguese
No full textA entoação pode ser decomposta em componentes estruturadoras (finalização e sustentação) e, também, semântico-funcionais (foco/ênfase e acento lexical). A proposta assumida pelo grupo de pesquisa ExProsodia, baseada nos estudos de Xu e Wang (1997), permite a análise isolada de cada uma das componentes de F0. Neste estudo tratamos das componentes estruturadoras, especificamente, do estudo da finalização (F). O trabalho tem como objetivo, primeiro, analisar por meio de testes de percepção o que os sujeitos falantes do português brasileiro (doravante PB) julgam ser um final de frase assertiva. Depois, é nosso propósito analisar se os dados perceptivos fornecidos pelos ouvintes coincidem com aqueles disponibilizados pela análise automática obtida por meio da rotina ExProsodia®. É nosso intento, ainda, verificar se, no que tange à percepção dos procedimentos de segmentação frasal com propósito de finalização, é observada a sequência finalizadora proposta por Ferreira Netto (2008), acrescida da hipótese de Consoni et al (2009) e Consoni (2011). Este estudo visa integrar a coletânea de trabalhos desenvolvidos pelo Grupo de pesquisa ExProsodia - Análise automática da entoação na fala de língua portuguesa, linha de pesquisa na área de Percepção de Prosódia sob a orientação do Prof. Dr. Waldemar Ferreira Netto. Elaboramos dois testes. No primeiro teste foram apresentadas nove frases (três frases sem manipulação e seis manipuladas). As frases não manipuladas são, ao longo deste trabalho, mencionadas como frases modelos. As seis frases manipuladas foram subdivididas em dois conjuntos de três frases cada: a de frases monotonais e as frases manipuladas de modo que entre o tom médio (TM) e o tom de finalização (TF) houvesse uma distância de 7st. Nomeamos as primeiras frases como frases neutras e as segundas, frases hipóteses. No segundo teste foram apresentadas seis frases (somente as frases manipuladas, ou seja, as frases neutras e as frases hipóteses). Cada vez que o participante ouvia uma frase era solicitado a este que indicasse se a frase, de acordo com a sua percepção, estava ou não finalizada. Foram dadas duas opções de resposta aos ouvintes: sim, a frase está finalizada ou não, a frase não está finalizada. Os testes foram aplicados em 20 ouvintes de ambos os sexos, com idade entre 18 e 55 anos, todos com escolaridade entre nível médio e nível superior. Os resultados do teste 1 indiciam que as porcentagens dos ouvintes que consideram as frases neutras como não finalizadas sempre foram altas e mantiveram-se, em sua grande maioria, na casa dos 80%. Ademais, o produto da análise das frases hipóteses corrobora os dados dos trabalhos já citados. (CONSONI; FERREIRA NETTO, 2008; CONSONI et al., 2008; CONSONI et al., 2009 e CONSONI, 2011; FERREIRA NETTO, 2006, 2008; ROSA 2009). A análise do teste 2 fora efetuada por meio da teoria da detecção de sinais (TDS) (GREEN; SWETS, 1966; MACMILLAN; CREELMAN, 2005; ADBI, 2007). Ao fazer uso da TDS, pretendemos estimar a força da sensibilidade perceptiva de cada participante do teste 2. O valor dessa força é dada pelo cálculo do dee-prime. Os resultados do teste 2 apontaram dee-primes de três categorias diferentes, a saber: alto; médio e baixo. As respostas da grande maioria dos participantes situaram-se entre uma facilidade extrema e média de discriminar as frases finalizadas e as não finalizadas.The intonation can be decomposed into structuring components (finalization and support component) and also semantic-functional components (focus / emphasis and lexical stress). The proposal assumed by ExProsodia rechearch group, based on the studies of Xu and Wang (1997), it allows separate analysis of each component of F0. In this study we treat structuring components, specifically, the study of finalization (F). The study aims, first, to analyze through perception tests which Brazilian Portuguese (henceforth PB) speakers think that is the ending of declarative sentences. It is our intent also verify if the finalization sequence proposed by Ferreira Netto (2008), plus the assumption of Consoni et al. (2009) e Consoni (2011) is observed. And lastly, our purpose is to inspect whether perceptual data match with those provided by automatic analysis obtained by routine ExProsodia®. This study aims to integrate a collection of work done by the research group ExProsodia - Automatic analysis of intonation in the speech of the Portuguese language, research line in the area of Perception of Prosody under the guidance of Prof. Dr. Waldemar Ferreira Netto. We developed two tests. In the first test, nine sentences were presented to the Brazilian Portuguese listeners (three sentences without manipulation and six manipulated). Non-manipulated sentences, throughout this work, as mentioned as models sentences. The six manipulated sentences were subdivided into two groups of three sentences each one: the monotonous sentences and manipulated sentences. The last one is manipulated so that between the medium tone (MT) and the finalization tone (FT) there is a distance of 7 semitones. We named first sentences as neutral sentences and the others as hypothesis sentences. At the second test, six sentences (only manipulated sentences, i.e. neutral sentences and hypothesis sentences) were presented to Brazilian Portuguese listeners. Each time the participant heard a sentence, he was requested to indicate whether that sentence, according to their perception, or was not finalized. Two response options were given to listeners: yes, the sentence is finished or not, the sentence is not finished. 20 listeners of both sexes, aged between 18 and 55 years, all with education among middle and senior level have participated of the test. The test results indicate that percentages of listeners who consider neutral sentences as unfinished sentences were always high and remained, mostly at around 80%. Moreover, the product of the analysis of hypothesis sentences corroborates data of the work already cited. (CONSONI; FERREIRA NETTO, 2008; CONSONI et al., 2008; CONSONI et al., 2009 e CONSONI, 2011; FERREIRA NETTO, 2006, 2008; ROSA 2009). The analysis of the test 2 has carried out by the signal detection theory (SDT) (GREEN; SWETS, 1966; MACMILLAN; Creelman, 2005; ADBI, 2007). By making use of the TDS, we intend to estimate the strength of the perceptual sensitivity of each participant of the test 2. Results showed dee-primes in three different categories, namely: high; medium and low. The responses of the majority of participants were between one extreme and mean facility to discriminate the finished and unfinished sentences
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