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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1041

White Parents’ Color-Blind Racial Ideology and Implicit White Preference as Predictors of Children’s Racial Attitudes

January 2020 (has links)
abstract: This study examined relations between White parents’ color-blind and implicit racial attitudes and their children’s racial bias as well as moderation by diversity in children’s friends and caregivers, parental warmth, child age, and child sex. The sample included 190 White/Non-Hispanic children (46% female) between the ages of 5 and 9 years (M = 7.11 years, SD = .94) and their mothers (N = 184) and fathers (N = 154). Data used were parents’ reports of color-blind racial attitudes (Color-blind Racial Attitudes Scale; CoBRAS), parental warmth, and racial/ethnic diversity of children’s friendships and caregivers, direct assessment of primary parent implicit racial attitudes (Implicit Association Test; IAT), and direct assessment of children’s racial attitudes. Results supported hypothesized relations between parent racial attitudes and some child racial bias variables, especially under certain conditions. Specifically, both mothers’ and fathers’ color-blind racial attitudes were positively related to children’s social inclusion preference for White children over Black children and parents’ implicit White preference positively predicted child social inclusion racial bias, but only for younger children. Fathers’ color-blind racial attitudes positively predicted children’s social inclusion racial bias only when children’s pre-K caregivers were mostly White and were inversely related to children’s implicit White preference when children’s caregivers were more racially heterogeneous. Finally, parental warmth moderated relations such that, when mothers’ warmth was low, mother color-blind attitudes were negatively related to children’s racial bias in social distance preference and fathers’ color-blind attitudes positively predicted children’s social inclusion bias only when father warmth was low or average. / Dissertation/Thesis / Doctoral Dissertation Family and Human Development 2020
1042

Color Spill Suppression in Chroma Keying

Luo, Ya 06 January 2020 (has links)
Alpha matting is one of the key techniques in image processing and is used to extract accurate foreground from a still image or video sequences. Chroma keying is a special case of alpha matting with a solid background color. Color spill is one of the difficulties in chroma keying, and it has not been effectively solved by current methods. Sometimes, an image contains both reflected regions and transparent regions. When the foreground in such images is chroma keyed, reflection on the foreground is often falsely treated as transparency and causes unreal foreground extraction and composition. This problem is called color spill. Color spill suppression aims to extract the opaque foreground with the correct transparency descriptor (i.e. alpha value) and remove the reflected background color on it. When the background color presented on the foreground is simultaneously caused by reflection and transparency, color spill suppression becomes extremely challenging. It is because that the reflection removal and the actual transparency estimation is a dilemma. Our proposed method for color spill suppression is to separate reflected regions from transparent regions, and process reflected regions as foreground while keeping transparency unchanged at the same time. In this thesis, we propose a novel method for color spill suppression for chroma keying. The quality of the estimated alpha matte could be significantly improved. In our approach, we suppress color spill by using the polarization and the optical flow algorithm based on disparity estimation. Specifically, we make the assumption that reflection changes more than transparency when the scene is captured by a binocular camera with a polaroid filter. Based on this assumption, we took stereo images with polarization filter, registered stereo images by optical flow and conducted the variance analysis on histograms of input images to separate transparency and reflection. Our experiments show that the opaque foreground with background color spill can be reliably extracted while the real transparency can be kept.
1043

The Physiological Effect of Colored Background on One's Ability to See Colors

Waldrip, Rankin Carroll 08 1900 (has links)
This study is an attempt to understand if backgrounds with color impact physiology and the ability of a viewer to see color.
1044

Micro-images, Genera and Poème Exotique: a Guide to Tone Color Selection, Relative Dynamics and Temporal Pacing for Effective Performances of Three Microtonal Flute Works by Daniel Kessner

Sánchez, Terri 08 1900 (has links)
Micro-Images for Solo Flute, Genera for Flute/Alto Flute/Bass Flute and Clarinet/Bass Clarinet, and Poème exotique for Flute and Piano by American composer Daniel Kessner (b. 1946) utilize a hybrid compositional approach in which microtones are incorporated with more traditional chromatic writing. Through representative musical examples from each piece, this document highlights the timbral, dynamic and pacing complexities associated with the microtonal fingerings and prompts flutists to forgo idiosyncratic tendencies in favor of contextually based choices. In order to help guide musicians toward effective performances of these three pieces and similar works, a new tone color spectrum and description of relative dynamics are provided along with a discussion of the relationships between tone colors, relative dynamics and temporal pacing. Appendices include transcripts of email interviews with composer Daniel Kessner and Carla Rees, British contemporary flutist, as well as an updated list of Kessner’s flute works.
1045

Design and Application of Optical Polymers / 高分子の光学構造の設計と応用

Andrew, Harold Gibbons 25 March 2019 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(理学) / 甲第21547号 / 理博第4454号 / 新制||理||1640(附属図書館) / 京都大学大学院理学研究科物理学・宇宙物理学専攻 / (主査)教授 田中 耕一郎, 教授 前野 悦輝, 教授 山本 潤 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DGAM
1046

Flower color polymorphism in Hepatica nobilis var. japonica with reference to genetic backgrounds and reproductive success / ミスミソウにおける花色多型、 特に遺伝的背景と繁殖成功に関連して

Kameoka, Shinichiro 25 March 2019 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(人間・環境学) / 甲第21875号 / 人博第904号 / 新制||人||215(附属図書館) / 2018||人博||904(吉田南総合図書館) / 京都大学大学院人間・環境学研究科相関環境学専攻 / (主査)教授 瀬戸口 浩彰, 教授 加藤 眞, 教授 市岡 孝朗, 准教授 西川 完途 / 学位規則第4条第1項該当 / Doctor of Human and Environmental Studies / Kyoto University / DGAM
1047

Combined coagulation-microfiltration process for dye and fruit drink wastewater treatment

Eguagie, Alexander Ekenatanse January 2017 (has links)
No description available.
1048

Cubic Representations of Open-String Effective Action Contact Terms and BCJ Relations at Four-Point One-Loop

Micah, Tegevi January 2021 (has links)
The tree amplitudes of string theory low-energy effective actions admit a diagrammatic expansion in terms of higher-than-cubic contact terms. These tree amplitudes can be used to build loop amplitudes using unitary cuts or the forward limit. In this thesis we study the possibility of constructing four-point cubic representations for the resulting one-loop contact terms that obey the Bern-Carrasco-Johansson (BCJ) color-kinematics relation. From the string theory effective action we study the contact terms carrying ζ2, ζ3, ζ4, and ζ5. For the even ζ2 and ζ4 cases we find that the cubic representations are incompatible with the BCJ relations, as expected from their disappearance in the closed-string effective action. We find a unique, local set of numerators at ζ3 that obey the BCJ relations. For ζ5 we find two choices of representations: one obeys BCJ but requires non-trivial contributions for the tadpole; the other contains no tadpoles but breaks one of the BCJ relations.
1049

Caracterización in situ de mineral aurífero previo a su procesamiento mediante el sistema de colores Munsell en labores de cateo libre – Compañía Minera Poderosa S. A.

Anchelia Guerrero, Anuar Robert 07 April 2018 (has links)
Estudio de la aplicación del Sistema de Colores Munsell, para la caracterización de mineral aurífero proveniente de “labores de cateo libre” antes de su procesamiento; para tal efecto se considerarán los aportes que brindan las disciplinas de geología, mineralogía, química de los minerales y el mismo proceso metalúrgico.La investigación se llevó a cabo en la cordillera oriental de los Andes, al norte de Perú en la provincia de Pataz, donde se encuentra el Batolito de Pataz, yacimiento de tipo orogénico asociado a procesos de metamorfismo y caracterizado por vetas auríferas acompañadas de cuarzo y sulfuro; específicamente en el área de influencia de las actividades de la Compañía Minera Poderosa S.A. / Studying the possibility of Munsell Color System application in order to get gold ore characterization before its process. It is important, to mention that this research consider several contributions, which have been taken from geology, mineralogy, ore chemistry, and metallurgical process. This research took place in the eastern mountain range of the Andes, in the north of Peru in the province of Pataz, where the Pataz Batholith is located, an orogenic type deposit associated with processes of metamorphism and distinguished by its auriferous veins accompanied by quartz and sulfur; this mining site is specifically in the area of influence of the activities of Compañía Minera Poderosa S.A. / Tesis
1050

Apuntes de diseño de interiores. Principios básicos de escalas, espacios, colores y más [Capítulo 1]

Montes de Oca, Irina, Risco, Lucía January 1900 (has links)
Este primer manual didáctico surgió ante la inquietud de crear un instrumento de apoyo para los alumnos de la Carrera de Diseño Profesional de Interiores y demás personas que deseen aprender a organizar procesos e ideas al momento de enfrentar un proyecto de diseño interior. Los espacios se logran diseñar gracias a la imaginación y a las sensaciones que percibimos en un ambiente. Es gracias al diseño de interiores que podemos transmitir las emociones, ya que determinados espacios, ya sean públicos o privados, logran comunicarnos sensaciones de confort y comodidad. El diseñador es capaz de captar las necesidades y gustos del cliente para lo cual desarrolla una propuesta integral de diseño de interior. Apuntes de diseño de interiores es la primera publicación de las diseñadoras Irina Montes de Oca y Lucía Risco quienes proponen métodos para la concepción del diseño según al espacio, proporciones y escalas humanas. Asimismo, las autoras explican en los 7 capítulos, los elementos de la composición, la representación gráfica y la teoría de colores. Este libro espera ser un aporte y una herramienta básica para que el estudiante entienda los principios del diseño de interiores.

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