Ingeniero Civil Eléctrico / La entrada de las ERNC trae consigo nuevos desafíos al operador del sistema, por la naturaleza variable que poseen. Estas variaciones deben ser cubiertas por centrales convencionales, aumentando los ciclos de toma y bajada de carga junto con el número de encendidos y apagados del parque térmico, incrementando las horas equivalentes de operación (EOH) pudiendo modificar los mantenimientos planificados para estas unidades. Así es que las empresas del sector podrían evaluar la opción comercial de establecer un mantenimiento óptimo de sus instalaciones, para maximizar los beneficios generados. El objetivo principal es diseñar una metodología de optimización para obtener el plan óptimo de mantenimiento de un portafolio de centrales, en un sistema caracterizado por la alta penetración de ERNC. Se establece el estado del arte sobre metodologías para la obtención de un plan óptimo de mantenimiento, se determina la necesidad de mantenimiento en un periodo a partir del historial operacional de la unidad generadora y se evalúa la metodología en el SING. La metodología implementada consiste en una optimización basada en iteraciones, en que el modelo toma como base el perfil de costos marginales del sistema, para definir el calendario óptimo de mantenimiento de un portafolio de centrales. Primero se realiza una simulación de la operación del sistema para obtener el calendario de mantenimientos, éste se incorpora en una nueva simulación de operación del sistema para determinar un nuevo calendario de mantenimientos, y así iterar hasta encontrar el óptimo del portafolio. Entre los resultados obtenidos se destaca que, desde un punto de vista económico, puede ser conveniente adelantar mantenimientos en comparación al momento límite para realizarlos, ya que es beneficioso ejecutarlos cuando los costos marginales se encuentran más bajos. También se observan cambios significativos en el perfil de costos marginales al modificar los mantenimientos de las centrales con tecnología de base. Se concluye que la metodología implementada cumple con lo esperado, determinar la necesidad del mantenimiento a partir del historial de operación de las unidades y definir, así, el calendario óptimo de mantenimiento para el portafolio a partir del perfil de costos marginales. Se aprecia que las empresas con tecnología de base pueden ejercer poder de mercado al momento de decidir cuándo realizar el mantenimiento, ya que los costos marginales se ven alterados. Así, es importante que la entidad correspondiente evalúe y regule lo anterior, para evitar una merma en los niveles de competencia del sistema.

No description available.

Thesis (M.S.W.)--University of Hong Kong, 1982.

This report documents the initial inspiration, development, and rewrites that went into the creation of John Gregory Bellina’s screenplay Shut Up and Sing. Furthermore, the following pages trace the evolution of the author’s writing during the entirety of his program experience. / text

By examining the Minimalist ethos, joint and junctures and light, it is my intention to propose that Minimalist architecture easily and naturally accommodates the environmental ethos of reducing, reusing, recycling and recovering. More over, Minimalism, which draws widespread admiration as all good architecture does, allows us to graft inspiration and inherent environmental queues onto the ever-expanding yet distinct branch of green architecture. Producing a possible hybrid that initiates a new type of architectural discourse, one that moves beyond contemporary convention into the future reality of conservation. I present to you the UBC School of Journalism. Although, this building presently exists, I chose to design and develop the School of Journalism on the basis of green architecture, which means designing with nature in an environmentally responsible way.

By examining the Minimalist ethos, joint and junctures and light, it is my intention to propose that Minimalist architecture easily and naturally accommodates the environmental ethos of reducing, reusing, recycling and recovering. More over, Minimalism, which draws widespread admiration as all good architecture does, allows us to graft inspiration and inherent environmental queues onto the ever-expanding yet distinct branch of green architecture. Producing a possible hybrid that initiates a new type of architectural discourse, one that moves beyond contemporary convention into the future reality of conservation. I present to you the UBC School of Journalism. Although, this building presently exists, I chose to design and develop the School of Journalism on the basis of green architecture, which means designing with nature in an environmentally responsible way. / Applied Science, Faculty of / Architecture and Landscape Architecture (SALA), School of / Graduate

Made available in DSpace on 2014-06-11T19:26:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-02-26Bitstream added on 2014-06-13T20:16:04Z : No. of bitstreams: 1 cavalcanti_mps_me_sjrp.pdf: 612728 bytes, checksum: 47d18c69b5ae7b113879890007734ec5 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / O obejtivo principal deste trabalho é estudar as obstruções sing que desempenham papel importante nas demonstrações de certos resultados sobre decomposição de grupos que satisfazem certas hipóteses de dualidade apresentados em [16] e [17], em particular, sobre decomposição de um grupo G adapatada a uma família S de subgrupos de G com (G,S) um par de dualidade de Poincaré. Alguns invariantes cohomológicos e certos resultados envolvendo tais invariantes, decomposição de grupos e/ou grupos e pares de dualidade são também apresentados. / The main objective of this work to study the obstructions sing which play an important role in demonstrating certain results on the splittings of groups that satisfy certain hypotheses of duality presented in [16] and [17], in particular, the decomposition of a group G adapted to a family S of subgroups of G with (G,S) a Poincaré duality pair. Some cohomological invariants and certain results involving such invariants, a splittings of groups and/or groups and pairs of duality are also presented.

<p>This dissertation identifies four American novels published between 2016 and 2018—Colson Whitehead’s <em>The Underground Railroad</em> (2016), Jesmyn Ward’s <em>Sing, Unburied, Sing</em> (2017), Celeste Ng’s <em>Little Fires Everywhere</em> (2017), and Tommy Orange’s <em>There There</em> (2018)—that deploy a multifocal narrative structure to facilitate readers’ ethical engagement with their content. Specifically, these novels’ narrative structures guide readers through spatial reading, or reading across numerous characters’ perspectives of a shared space instead of with the grain of chronological time. Contextualizing these novels within the nation’s shifting racial beliefs initiated by the election of Barack Obama in 2008 and the election of Donald Trump in 2016, I argue that, in these novels, multifocalization and the spatial reading it activates dismantle the cognitive schemas and cultural discourses that sustain unjust racial ideologies. Spatial reading engages readers in acts of rereading and contextualization that diverge from the practices of generalization and erasure affiliated with myths of racial progress and the rhetoric of colorblindness, and it accordingly builds readers’ capacity to acknowledge racism as systemic, structural, and multifaceted. By emphasizing how each novel facilitates readers’ racial literacy, this project diverges from and complicates the widespread belief that the humanities contribute to antiracism by building readerly empathy, instead championing how the humanities impart upon readers the tools to analyze and critique systemic racism. </p>

Submitted by Erika Demachki (erikademachki@gmail.com) on 2014-09-29T21:36:38Z No. of bitstreams: 2 Faria,CINDY FOLLY - dissertação - 2012.pdf: 451798 bytes, checksum: c0c6b451be0b3a78f83d441bb8ec1c6e (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Approved for entry into archive by Jaqueline Silva (jtas29@gmail.com) on 2014-09-29T21:40:55Z (GMT) No. of bitstreams: 2 Faria,CINDY FOLLY - dissertação - 2012.pdf: 451798 bytes, checksum: c0c6b451be0b3a78f83d441bb8ec1c6e (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Made available in DSpace on 2014-09-29T21:40:55Z (GMT). No. of bitstreams: 2 Faria,CINDY FOLLY - dissertação - 2012.pdf: 451798 bytes, checksum: c0c6b451be0b3a78f83d441bb8ec1c6e (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Previous issue date: 2012-04-16 / Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq / The present work intends to investigate the contributions that the universe of vocal performance, especially in its interpretive and expressive aspects, can offer to the activity of the stringed instrument player, more specifically to the violist, therefore approximating again two practices that were closely related in other historical periods. Up to certain part of the romantic period, we can notice a strong relation between instrumental interpretation and lyrical singing, and between the former and other practical elements related to music and to singing, such as rhetoric and oratory. Through centuries, music was treated as a discourse, and expressiveness, or the way in which notes were “pronounced”, was sought after and explored in a significant manner. Therefore, through a bibliographical research, the first part of this paper presents the close relation through history between performance on instruments and voice, and between viola and singing. Thus, it is noticed that the voice which is manipulated in singing and oratory has many expressive elements to be considered and even imitated. Then, one considers the specific context of the viola and its path since its beginnings until today, also in regard to the influence of the singing. The second part is formed by the analysis of some musical interpretation principles that highlight the expressiveness from vocal model, which are extracted from treatises used today as guide to singing performance. To these instructions are added some approaches to singing made by some string methods’ and treatise’s authors through history, all conformable and pertinent to the viola interpretation. And in order to demonstrate the use of these principles, interpretative suggestions are made for excerpts from the viola repertoire from different styles and periods. / Este trabalho se propõe a investigar as contribuições que o universo da performance vocal, notadamente seus aspectos interpretativos e expressivos, podem oferecer à atuação do instrumentista de cordas, especificamente ao violista, reaproximando assim duas práticas que estiveram bastante próximas em outros períodos da história. Até parte do período romântico, percebe-se uma relação muito intensa entre interpretação instrumental e canto lírico, e entre aquela e outros elementos práticos ligados à música e ao canto, como retórica e oratória. Durante séculos, a música era tratada como um discurso e a expressividade, ou a maneira como eram “pronunciadas” as notas, era buscada e explorada de maneira significativa. Dessa forma, através de pesquisa bibliográfica, a primeira parte deste trabalho apresenta a proximidade interpretativa que houve pela história entre instrumentos e canto, e viola e canto. Assim, é percebido que a voz manipulada no canto e na oratória possui muitos elementos de expressividade a serem observados e até mesmo imitados. Considera-se, em seguida, o contexto específico da viola e o caminho desenvolvido por ela desde seus primórdios até hoje, também de acordo com a influência do canto. A segunda parte é composta da análise de alguns princípios musicais interpretativos que evidenciam a expressividade a partir do modelo vocal, extraídos dos tratados utilizados atualmente como guia para a performance do canto. A essas instruções também são agregadas aproximações com o canto que alguns autores de métodos e tratados de cordas já fizeram ao longo das épocas, todas compatíveis e pertinentes à interpretação na viola. E para que a aplicação destes princípios possa ser demonstrada, são apresentadas sugestões interpretativas para trechos do repertório da viola de diferentes estilos e períodos.

published_or_final_version / Architecture / Master / Master of Architecture