Les nouveaux systèmes développés par le secteur automobile font de plus en plus appel à l'électronique et nécessiteront bientôt plus de puissance que ce que peuvent fournir les batteries 12 et 24 Volts actuelles. C'est dans ce cadre que de nouvelles batteries 42 Volts vont être introduites. Dans un premier temps, nous avons montré que les solutions "classiques", permettant de diminuer la résistance à l'état passant des composants unipolaires conventionnels, n'étaient plus satisfaisantes car elles se heurtaient à une limitation fondamentale, dite "limite du silicium". C'est pour cette raison que nos travaux de recherche se sont orientés vers de nouveaux transistors MOS de puissance (FLYMOS") adaptés au 42 Volts. Le travail présenté dans ce mémoire est basé sur le concept des îlots flottants (FLi-Diode) et de son application aux composants MOS (FLYMOS"), afin d'améliorer le compromis "tenue en tension/ résistance à l'état passant". Ce concept consiste en l'introduction d'une région flottante P dans une zone N- afin d'étaler le champ électrique dans le volume : la tenue en tension peut ainsi être augmentée sans pour autant dégrader la résistance à l'état passant. Dans un deuxième temps, les paramètres technologiques ont été optimisés à l'aide de la simulation physique bidimensionnelle pour concevoir un transistor FLYMOS" (cellules de bord et centrale) présentant un compromis optimal entre tenue en tension et résistance à l'état passant. Le concept des îlots flottants a ensuite été validé par la réalisation technologique de FLi-Diodes et de FLYMOS" basse tension (BVdss < 100V). Les meilleurs transistors FLYMOS" ainsi réalisés présentent une tenue en tension supérieure à la tenue en tension de la jonction plane et une résistance à l'état passant fortement améliorée puisqu'elle est proche de la limite conventionnelle du silicium.

<p>Syftet med denna C-uppsats är att försöka ta reda på hur Scientologikyrkan undervisar sina medlemmar och om det kan vara så att Scientologikyrkans syn på undervisning kan vara något för oss pedagoger att ta till oss eller om vi inte alls ska ta till oss av deras syn. För att kunna ta reda på detta finns några frågor jag behöver reda ut:</p><ul><li>Hur ser undervisningsmiljön ut?</li><li>Vilka är det som sköter undervisningen?</li><li>Hur går kurserna till?</li><li>Hur ser den inre och yttre undervisningsmiljön ut?</li><li>Kan man försvara så pass (enligt mig) gamla teorier som Scientologkyrkan använder sig av då Hubbard var verksam för ungefär 50 år sedan, alltså under mitten av 1900-talet?</li><li>Hur stämmer Hubbards teorier överens med vad tidigare forskare inom undervisning säger och hur stämmer det överens med vad som står i LPF94?</li></ul> / Uppsatsen är inte helt komplett i föreliggande form.

Syftet med denna C-uppsats är att försöka ta reda på hur Scientologikyrkan undervisar sina medlemmar och om det kan vara så att Scientologikyrkans syn på undervisning kan vara något för oss pedagoger att ta till oss eller om vi inte alls ska ta till oss av deras syn. För att kunna ta reda på detta finns några frågor jag behöver reda ut: Hur ser undervisningsmiljön ut? Vilka är det som sköter undervisningen? Hur går kurserna till? Hur ser den inre och yttre undervisningsmiljön ut? Kan man försvara så pass (enligt mig) gamla teorier som Scientologkyrkan använder sig av då Hubbard var verksam för ungefär 50 år sedan, alltså under mitten av 1900-talet? Hur stämmer Hubbards teorier överens med vad tidigare forskare inom undervisning säger och hur stämmer det överens med vad som står i LPF94? / Uppsatsen är inte helt komplett i föreliggande form.

Thesis (M.A.)--West Virginia University, 1999. / Title from document title page. Document formatted into pages; contains vi, 96 p. Includes abstract. Includes bibliographical references (p. 95-96).

Thesis (Ph. D.)--University of California, Santa Cruz, 1993. / Typescript. Includes bibliographical references (leaves [238]-254).

abstract: The North Park Middle School Band, in Pico Rivera, California, is an exemplary model of a band program grounded in the principles of social justice. Three facets guide the program: Social Outreach, Cultural Outreach, and Kids Helping Kids. This qualitative study explores what led the director to create this program, its current structure as well as its historical development, and the impact the program is having on the students involved and the community to which they reach. Between the months of September and December 2012, I spent a total of three weeks with the students, parents, and the director of the North Park Band, Ron Wakefield. In that time, the students were observed during band rehearsals on typical school days. Additionally, I traveled with the band to three separate outreach concerts at the Los Angeles Veterans Healthcare Facility, nursing homes and assisted living centers, as well as the Isaiah House, a homeless shelter for women and children. I observed the students and their interactions with the residents of those facilities, and took detailed observation notes. In addition, a survey was distributed to students in the top two bands, interviews were conducted with current students and a former student, a parent and a former parent, and the director. The North Park Band program structure leads students to develop an unusually high level of responsibility. Students gain an understanding of current issues in society and demonstrate compassion towards other human beings. In many cases, the students discover a sense of life purpose through the program and feel that they have a responsibility to help their community. While a central focus of the program is on humanistic values, it is evident that the students also receive a quality music education. / Dissertation/Thesis / D.M.A. Music 2013

O nucléolo é uma organela subnuclear formada pela atividade transcricional dos genes ribossomais 18S-5.8S-26S (rDNA 45S) e consequente biogênese dos ribossomos. A atividade destes genes resulta na região organizadora do nucléolo (NOR), na forma de uma constrição secundária em cromossomos metafásicos. As constrições secundárias se condensam progressivamente durante a mitose e se descondensam ao final da telófase quando a reestruturação do nucléolo se inicia. Genomas que apresentam mais de um locus de rDNA 45S deve apresentar, obrigatoriamente, pelo menos um par de NORs, enquanto os demais loci poderão ou não serem expressos. O controle da expressão dos genes ribossomais e a formação da cromatina nucleolar são modulados por eventos epigenéticos. Embora alguns pontos sobre o funcionamento dos genes ribossomais e a formação do nucléolo estejam bem estabelecidos, questões como o padrão de condensação da cromatina nucleolar durante a mitose, o padrão de funcionamento de sítios adicionais de genes ribossomais, o papel das modificações epigenéticas na dinâmica da cromatina nucleolar e na expressão do rDNA 45S e o mecanismo de herança dos genes ativos, permanecem abertas. A espécie Crotalaria juncea (Leguminosae-Papilionoideae), com 2n=2x=16 cromossomos, que possui um locus de rDNA 45S no braço curto do cromossomo 1, que sempre forma constrição secundária, e um sítio adicional com atividade facultativa no braço curto do cromossomo 4, é um excelente modelo para o estudo destas questões. No contexto apresentado, foram estudadas a dinâmica de condensação das NORs durante o ciclo celular e sua correlação com a atividade dos genes ribossomais, incluindo o locus adicional, e ainda o papel da metilação da citosina do DNA durante estes processos. Os resultados demonstram que a cromatina da região organizadora do nucléolo segrega em um estado descondensado durante a mitose, na forma de constrição secundária, ou seja, tal estrutura não se condensa durante a metáfase e não volta a se distender no início da telófase. Aparentemente, o que causa correlações equivocadas entre a atividade nucleolar e a observação morfológica da constrição secundária na metáfase é a contração forçada da cromatina da NOR causada por agentes antimitogênicos. Este modelo de segregação em um estado aberto pode ser explicado pela descrição de diversas proteínas que permanecem diretamente ligadas ou indiretamente associadas à região da NOR durante a mitose, funcionando como uma barreira física para a compactação. Ambos os sítios, principais e adicionais, do rDNA 45S presentes em Crotalaria juncea apresentam atividade transcricional, embora o locus do cromossomo 4 mostre atividade facultativa. Ao contrário do que foi anteriormente proposto, uma vez ativo, o locus adicional permanece descondensado durante todo o ciclo mitótico, seguindo o mesmo comportamento dos sítios principais. As constrições secundárias e a cromatina nucleolar são hipermetiladas em nível citológico, independentemente de sua atividade. A aparente hipometilação observada no rDNA 45S em cromossomos mitóticos e núcleos interfásicos se deve ao menor grau de compactação da região organizadora do nucléolo e, consequentemente, à baixa densidade de cromatina. / The nucleolus is a subnuclear organelle formed as a result of transcriptional activity of ribosomal RNA genes 18S-5.8S-26S (45S rDNA) and subsequent ribosome biogenesis. This activity forms the nucleolar organizing region (NOR) as a secondary constriction in metaphase chromosomes. The secondary constrictions progressively condense during mitosis and decondense at the end of telophase, when nucleoli start to reassemble. Genomes presenting more than one 45S rDNA locus must have at least one pair of NOR bearing chromosomes, while other loci may be expressed or not. Ribosomal gene expression and nucleolar chromatin assembly are modulated by specific epigenetic events. Although some topics related to rDNA gene activity and nucleolus formation are well understood, questions such as the behavior of nucleolar chromatin condensation during mitosis, standard functions associated with rDNA additional sites, role of epigenetic modifications in nucleolar chromatin and 45S rDNA expression processes, and inheritance mechanism of active genes, remain to be solved. Crotalaria juncea (Leguminosae - Papilionoideae) has 2n=2x=16 chromosomes and carries a 45S rDNA locus at the short arm of chromosome 1, always presenting a secondary constriction, and an additional site with facultative activity at the short arm of chromosome 4, being an excellent model to resolve these questions. Thus, this study aimed to study NOR condensation dynamics during the cell cycle and its correlation with ribosomal gene activity, including the additional locus, while analyzing the role of rDNA cytosine methylation during this process. The results show that NOR chromatin segregate in a decondensed way throughout mitosis, as a secondary constriction. In other words, this structure does not condense during metaphase and the NOR is not reassembled at the beginning of telophase. Misinterpretations relating nucleolar activity with morphological observations of secondary constrictions, appear to be induced by the artificial contraction of NOR chromatin caused by antimitotic drugs. This segregation model in an open state may be supported by strong diversity of proteins that are maintained attached to NORs during mitosis, serving as a physic barrier for condensation. Both principal and additional 45S rDNA sites of C. juncea are transcriptionally active, although the additional locus in chromosome 4 presented facultative activity depending upon ribosomal request. Unlike what was previously proposed, once the additional site is activated, it remains in an open configuration throughout the cell cycle, similarly to principal site behavior. Secondary constrictions and nucleolar chromatin are hypermethylated at cytological level, regardless of their activity. The seeming hipomethylated state of 45S rDNA in interphase nucleus and mitotic chromosomes is due to a lower compaction level of nucleolar organizing regions and subsequent low chromatin density.

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Thesis (MA (Psychology))--University of Stellenbosch, 2005. / The purpose of this study was to ascertain whether certain Ron Davis techniques which have been applied by the Davis Dyslexia Correction Center in America the past two decades could in the short term have a significantly positive influence on the reading ability and psychological functioning of children with a reading disorder, especially regarded against the background of escalating concern about the reading ability of South African learners in general and learners with a reading disorder in particular.