204,620 research outputs found
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Simulação numérica da separação de misturas CH4/He e CO2/He em colunas de adsorção em leito fixo
No full textDissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Química, Florianópolis, 2009Os gases metano e dióxido de carbono fazem parte da composição do gás natural, onde o metano encontra-se em maior proporção. Ambos os gases apresentam efeitos indesejáveis, onde o metano é o maior responsável pelo efeito estufa no Planeta e o gás carbônico, pela oxidação de dutos no transporte do gás natural. A separação do CO2 do gás natural promove um aumento do poder calorífico do combustível, possibilitando a utilização do CO2 como matéria prima na indústria química, como por exemplo, na produção de gelo seco. Os processos adsortivos são utilizados na remoção e/ou na purificação de compostos gasosos, quando os métodos tradicionais tornam-se economicamente inviáveis. Neste trabalho foi estudado o processo de adsorção monocomponente das misturas CH4\He e CO2\He em coluna de leito fixo, empacotada com adsorvente pellets de silicalita. As equações diferenciais que descrevem o modelo físico, com as condições iniciais e de contorno, foram aproximadas numericamente pelo método de Volumes Finitos, com um arranjo co-localizado de variáveis em uma malha estruturada. Foi utilizado como função de interpolação o esquema WUDS. Para descrever a transferência de massa da fase fluida para a sólida, foi aplicado o modelo da força motriz linear (LDF), enquanto que, para determinar a concentração de equilíbrio entre a fase sólida e fluida, foi utilizada a equação de Langmuir estendida. As curvas de ruptura obtidas numericamente apresentaram boa concordância com as experimentais, sendo possível avaliar a eficiência de purificação dos gases em leito fixo em função da variação da concentração, temperatura e vazão de alimentação.Methane and carbon dioxide gases are part of natural gas composition and methane is in bigger proportion. Both gases are pollutants which methane is the most responsible by the greenhouse effect and carbon dioxide in turn by pipelines oxidation in natural gas transporting. The separation of CO2 from natural gas promotes an increase in calorific power of the fuel, allowing the use of CO2 as a raw material in chemical industry, as in the production of dry ice. Gas adsorption process have been used on the removal and/or purification of toxic or oxidant pollutant gases, when conventional methods are costly or molecular diameter to be adsorbed are very close to each other. In this work, the performance of a fixed monolayer packed-bed of silicalite pellets for gas mixture adsorption (CH4/He and CO2/He) was studied through the solution of differential equations, with initial and boundary conditions, using the Finite Volume Method with a co-localizated arrangement of variables in a structured grid. In the application of this technique, the Weighted Upstream Differencing Scheme (WUDS) was used as interpolation function. The linear driving force (LDF) model was used to describe the mass transfer from fluid to the solid phase, while extended Langmuir equation was used to calculate equilibrium concentrations between fluid and solid phases. The numerical breakthrough curves obtained in this work showed good agreement with the experimental curves, allowing the prediction of the adsorption efficiency of the fixed bed as function of the feed concentration, feed temperature and feed flux variation
Kustverdediging na 1990 (Kustnota 1990): Technisch rapport 18: Berekeningsresultaten beleidsalternatieven
No full textVanuit een beschrijving van beleidsanalyse in algemene zin en de gebruikelijke terminologie en definiering ervan, wordt toegewerkt naar een specificatie van de voor de discussienota 'Kustverdediging na 1990' gehanteerde beleidsanalytische aanpak. Hierin wordt de doelstelling van de studie uitgewerkt, wordt de uitgangssituatie gespecificeerd en worden de randvoorwaarden beschreven. De gewenste ontwikkelingen ten aanzien van de kustverdediging en de relatie met de maatschappelijke funkties in het kustgebied worden vastgelegd in strategieen. Wanneer ook de maatregelen die deze strategieen konkreet maken worden ingevuld leidt dit tot (beleids) alternatieven. Tevens wordt aangegeven welke ontwikkelingen de inspanningen die voor de kustverdediging de komende decennia nodig zijn, in hoofdzaak bepalen. Deze worden uitgedrukt in scenario's en betreffen vooral de hydrometeorologische randvoorwaarden (zeespiegel, klimaat) en de morfologische ontwikkelingen (gemiddeld, ongunstig). Tot slot worden de criteria beschreven op basis waarvan de ontwikkelingen bij diverse beleidskeuzes kunnen worden vergeleken. Het betreft kosten, verliezen aan duinareaal, e.d. Ten behoeve van de integrale analyse is het systeemanalytische model KUSTBEL (TR-17 ) ontwikkeld waarmee op relatief eenvoudige wijze voor de verschillende beleidsalternatieven de resulterende kustontwikkeling en de effecten daarvan op veiligheid en functies kunnen worden geanalyseerd en vergeleken. De feitelijke uitvoering van de beleidsanalyse richt zich op de analyse van beleidsalternatieven aan de hand van concrete rekengevallen, die in KUSTBEL worden ingevoerd (uitgezonderd de strategie Zeewaarts). Als onderdeel van de analyse is tevens een gevoeligheidsanalyse uitgevoerd om de invloed te kunnen inschatten van de onzekerheden die samenhangen met de beschikbare kennis en informatie.Kustnot
Kustverdediging na 1990 (Kustnota 1990): Technisch rapport 17: Systeemanalytisch model
No full textHet doel van de discussienota 'Kustverdediging na 1990' is het voorbereiden van beleidskeuzen met betrekking tot de landelijke aanpak van de kustverdediging. Een groot aantal afwegingen en keuzen speelt hierbij een rol. Het is noodzakelijk het gehele scala aan mogelijkheden te vertalen in een aantal goed gedefinieerde beleidsalternatieven. Deze moeten systematisch worden onderzocht om tot een vergelijkende beoordeling te kunnen komen. Gekozen is voor de ontwikkeling van een systeemanalytisch model waarmee beleidsalternatieven doorgerekend kunnen worden. Dit model heet KUSTBEL. Het systeemanalytische model maakt het mogelijk een analyse van het kustsysteem uit te voeren. Hierbij wordt een voorspelde kustontwlkkeling getoetst aan maatschappelijke eisen die zijn gespecificeerd in de te onderzoeken beleidsalternatieven. Het model voert de berekeningen uit en bepaalt de gevolgen van een beleidsalternatief in termen van kosten en baten.Kustnot
The urban environment : agendas and problems
No full textThe United Nations estimate that by 2025 there will be around 5 billion people living in urban areas, more than the total world population 20 years ago. Currently, the developed nations are the most urbanised with, on average around three-quarters of their population living in cities, but this is changing. Increased levels of economic growth, of migration, of population expansion and, in some cases, of unprecedented industrial growth, mean that Asia and Africa will be the regions most radically affected by urban development over the next twenty years. Increasing debate on issues of urban sustainability has led to the consolidation of environmental agendas and the definition of a specific body of problems and policy issues on two levels. The first involves green agenda problems occupying the concerns of many in the developed nations such as global warming, ozone-layer depletion, loss of bio-diversity, deforestation, and the exhaustion of non-renewable resources. For the developing world, however, these global environmental problems are less immediate than the need to resolve acute problems relating to poverty and the so-called brown agenda problems of air and water pollution, inadequate waste management, the lack of basic services and green areas, declining infrastructure, and poor housing conditions, as well as issues of health, crime, violence, and social exclusion. It is now a commonly held belief that the green agenda cannot be addressed until the urgent problems of urban social deprivation and inequalities are resolved. This paper reviews the scale and character of contemporary urbanisation and the rapid growth of cities, particularly within the developing nations, and examines associated implications with respect to the physical arrangement of cities, their resource consumption and their environmental impact
Bilingual Chinese Classics
No full textHere are twenty-nine fables presented across from each other on facing pages. The right-hand (English) page contains notes, especially on idiomatic expressions. Each of the stories takes two pages in each language, with one line-drawing for each fable. The first story, illustrated on the cover, has monkeys trying to get the moon out of a well. The second fable, very apt, tells of a poor calligraphy-writing minister who got angry when his nephew could not reproduce his sloppy characters. Why didn't you ask me earlier? Now even I don't know them either (9). These fables are wise. The third tells of a man instructed by his wife in how to make soup. After some time, he took out a spoonful and tasted it; it needed salt, and he salted the soup. Unfortunately, each time he came back, he tasted the soup from the same spoonful. Of course the soup ended up oversalted and undrinkable. Another clever fable (75) tells of two young men who found the lair of a wolf that had terrorized their village. But how could two youths defeat a wolf? They noticed two cubs and took them up separate trees with them. When the wolf returned, they alternated pinching the cubs' ears, frustrating and wearing the wolf out until it died between the two trees. Though there are Aesopic fables here, most of these stories seem to be Chinese stories. MSA appears on 39, though the father and son are bringing the donkey home from market in this version. BW is on 67. This is a well-produced paperback.Language note: Bilingual English/ChineseJayne Rutledg
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No full textDistinguished Alumni Award Program author. LTG David K. Heebner, USA (Ret) (Presented 13 Aug 14)NANAhttp://archive.org/details/adevelopmentndco109451773
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