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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.
91

Lugar do lixo é no lixo: estudo de caso de assimilação da informação

Tavares, Carla 21 February 2003 (has links)
Made available in DSpace on 2015-10-19T11:50:12Z (GMT). No. of bitstreams: 1 carlatavares.pdf: 3229506 bytes, checksum: ef8b27da6d9b2236c083b8955ac78115 (MD5) Previous issue date: 2003-02-21 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / This present study investigates the assimilation of information: "the place for trash is in the trash" through the analysis of reports from three groups of students in the 4th grade of elementary school. For such, craft workshops of recycled paper of the projeto Recicloteca of non-governmental Organization - Ecomarapendi - were transformed in information aggregate and named experimental workshops. This type of approach defines its insertion on Information Science and its social responsibility with knowledge communication, has been woven a conceptual web joining threads of information and environmental education. Although there were barriers of communication, the results of the research show that the information was absorbed by a significant number of children which reveals the coherence and up-to-date-ness of this research in the problematic of solid waste - trash / presente estudo investiga a assimilação da informação: lugar do lixo é no lixo através da análise de depoimentos textuais e gráficos de três grupos de alunos da 4ª série do ensino fundamental. Para isso, foram utilizadas como base as oficinas de reciclagem artesanal de papel do Projeto Recicloteca da ONG Ecomarapendi, transformadas em agregado de informação e denominadas de oficinas experimentais. Esse tipo de abordagem define sua inserção na Ciência da Informação e sua responsabilidade social na comunicação do conhecimento, tendo sido tecido uma rede conceitual unindo fios da informação e da educação ambiental. Além da constatação da presença de barreiras de comunicação, os resultados da pesquisa apontaram que a informação foi assimilada por um número significativo de crianças revelando a coerência e atualidade dessa pesquisa na problemática dos resíduos sólidos [lixo].
92

Estoques de carbono e agregados do solo cultivado com cana-de-açucar: efeito da palhada e do clima no centro-sul do Brasil / Soil carbon stocks and soil aggregation under sugar cane: the effect of green trash and climate in Central and Southern Brazil

Gábor Gyula Julius Szakács 08 October 2007 (has links)
O estudo foi dividido em quatro partes. Na primeira parte analisou-se o impacto do clima na estocagem de carbono em solos de canaviais sem a queima da palhada. Foram escolhidos três regimes climáticos contrastantes do centro-sul do Brasil. O potencial de seqüestro de carbono orgânica no solo (COS) foi determinado, em cada regime climático, de acordo com a taxa anual de carbono remanescente no solo proveniente da palhada depositada. Para obter esta taxa, compararam-se os estoques de COS em canaviais com e sem queima da palhada. Esse ganho anual foi comparado com a entrada anual de carbono via palhada depositada. O ganho anual de COS (0-30 cm) em canaviais sem queima da palhada não resultou em diferenças significativas por clima: 1, 97 Mg ha-1 (clima norte), 2,00 Mg ha-1 (clima centro) e 1,70 Mg ha-1 (clima sul). Os regimes climáticos estudados também não revelaram diferenças significativas entre suas temperaturas e precipitações médias anuais. Porém, o aumento anual de COS um pouco menor no clima sul levou à conclusão que o potencial de seqüestro de carbono diminui ligeiramente em latitudes mais altas, devido à maior precipitação no centro-sul do Brasil. Na segunda parte avaliou-se o impacto da palhada sobre a estabilidade de agregados dos solos, que foi calculada pelo método de fracionamento proposto por Six et al. (2000a). A estabilidade de agregados no solo do canavial sem a queima da palhada aumentou, em média, 15,3% por ano na profundidade 0-30 cm. Na terceira parte, avaliou-se a diferença da estabilidade de agregados entre canaviais e mata nativa. O solo da mata nativa mostrou uma estabilidade de agregados significativamente maior (7,2 vezes). Supõe-se que a estabilidade de agregados seja maior na mata nativa como resultado da maior presença de matéria orgânica e biota no solo. Na quarta parte avaliou-se a origem do carbono nos agregados estáveis em água de fluxo contínuo para determinar que forma de agregação possui a melhor proteção contra a decomposição de carbono. Houve uma diferença significativa de \'delta\'13C entre os macroagregados e microagregados na camada superior, com 10% mais \'delta\'13C nos macroagregados. Isto indica mais carbono derivado da cobertura vegetal atual (C4), ou seja, mais incorporação da palhada nos macroagregados. O \'delta\'13C da fração de partículas livres ou agregados não estáveis em água de fluxo contínuo é menor em todas as profundidades, indicando que a matéria orgânica recente (C4) encontra-se no solo principalmente de forma agregada estável em água, evidenciando seu papel fundamental na estabilidade dos agregados. Constatou-se também, que quanto mais novo o macroagregado, maior o seu teor em carbono. Nos microagregados verificou-se o efeito contrário. Quanto mais velho o microagregado, maior o seu teor em carbono. Isso indica que o microagregado possui uma melhor proteção contra a decomposição de carbono, e também a capacidade de um aumento no teor de carbono, no decorrer do tempo, em virtude da assimilação de carbono mais novo. Conclui-se, que em termos de seqüestro de carbono de longa duração, é propício avaliar mecanismos de proteção do carbono recalcitrante dentro dos microagregados e estudar como técnicas agrícolas podem proteger melhor esta fração / The study was divided in four parts. The first part investigated climate impact on soil carbon stocks in sugar cane fields cultivated without green trash burning. For this purpose, three contrasting climates were chosen in Central and Southern Brazil. The sequestration potential of soil organic carbon (SOC) was determined for each climate, calculating how much of the carbon derived from deposited green trash remains in the soil every year. To obtain this rate, SOC stocks of sugar cane fields cultivated with and without green trash burning were compared. The annual difference (0-30 cm) did not differ significantly between climates: 1, 97 Mg ha-1 (Northern Climate), 2,00 Mg ha-1 (Central Climate) and 1,70 Mg ha-1 (Southern Climate). The climates did not show significant differences between their average annual temperatures and their annual precipitation. Nevertheless, a slightly smaller gain of SOC stocks in the Southern Climate leads to the conclusion that higher latitudes tend to stock slightly less COS due to higher annual precipitation. The second part evaluated the impact of green trash deposition on soil aggregate stability, which was calculated according to Six et al. (2000a). Soil aggregate stability under sugar cane fields cultivated with green trash burning had an average increase of 15,3% for soil depth 0-30 cm. The third part studied soil aggregate stability between sugar cane and natural forest vegetation. The forest soil revealed significantly higher (7,2 times) aggregate stability, supposedly due to higher organic matter content and more soil biota. The forth part examined the origin of carbon inside water-stable aggregates to determine which aggregation form provides better protection against carbon decomposition. The top soil layer showed a significant difference in \'delta\'13C between macro-aggregates (10% more \'delta\'13C) and microaggregates which means that more carbon derived from green trash (C4) was incorporated in macro-aggregates. \'delta\'13C of free soil particles or water-unstable aggregates is smaller for all soil layers indicating that fresh organic matter (green trash) is predominantly encountered in a water stable aggregated form in the soil. Furthermore, a correlation analysis revealed that more recent macro-aggregates had higher C content. The opposite was observed for micro-aggregates: the older the micro-aggregate, the higher its carbon content, leading to the conclusion that microaggregates protect carbon better against decomposition and are also capable to enrich their carbon pool through C assimilation. Given its long-term soil carbon sequestration potential, it is recommended to investigate carbon protection mechanisms for the recalcitrant C pool in micro-aggregates and also to study how agricultural techniques could improve the protection of the recalcitrant C pool
93

Catadores de materiais recicláveis da cidade de Pelotas: situações de trabalho

Severo, Ricardo Gonçalves 27 June 2008 (has links)
Made available in DSpace on 2014-08-20T13:46:40Z (GMT). No. of bitstreams: 1 Ricardo_Goncalves_Severo_Dissertacao.pdf: 439387 bytes, checksum: 2ba702f97fe816caf300814fa04c11e6 (MD5) Previous issue date: 2008-06-27 / O presente estudo analisa as relações de trabalho dos catadores de materiais recicláveis da cidade de Pelotas, Rio Grande do Sul, Brasil. A atividade da catação de materiais é estudada dentro do cenário atual de desestruturação dos postos de trabalho formais e em uma cidade que há muitos anos apresenta uma economia estagnada, não dando oportunidades de emprego, em especial, para as camadas dos trabalhadores não especializados, caso da maioria dos catadores. Assim, com o aumento da demanda de materiais recicláveis, o que não escapa à lógica de desperdício produtivo, são estudadas as formas de subordinação e trabalho na catação local, quais os vínculos com os atravessadores de materiais, as condições de trabalho e a estrutura local da reciclagem.
94

Thrash metal: del sonido al contenido. Origen y gestación de una contracultura

Sánchez Mondaca, Maximiliano January 2007 (has links)
Autor no autoriza el acceso a texto completo de su documento / La modernidad ha impactado fuertemente en las nuevas formas de relación entre los jóvenes, este hecho se hizo aún más visible en nuestro país con la irrupción del régimen militar en 1973. Este nuevo régimen político re-estructuro el país en muchas esferas e hizo que los jóvenes se adoptaran diferentes formas de enfrentarse y desenvolverse en este escenario. La siguiente investigación da cuenta del origen de la contracultura Thrash Metal en Chile en un contexto de dictadura donde la represión policial, la censura a los medios de comunicación y la exacerbada estigmatización por parte de la sociedad adulta hacia las nacientes sub-culturas juveniles generan una respuesta de un cierto sector de jóvenes mediante formas de agrupación contraculturales y apolíticas que van dando cuenta una nueva sensibilidad juvenil. En el primer capítulo se plantea el problema a investigar articulando todas las dimensiones que de él se desprenden, tomando en cuenta el contexto sociopolítico y de que forma el Thrash se gesta como un movimiento contracultural juvenil alternativo dentro de ese contexto. A Partir de la problematización de esas temáticas se plantean objetivos que darán cuenta del movimiento Thrash en sus orígenes. Un segundo capítulo corresponde a una aproximación conceptual al tema, lo que muestra de que manera se puede encausar teóricamente el problema a investigar. En éste capítulo se incluyen tópicos tales como el contexto sociopolítico, la juventud, las sub-culturas y las contraculturas, el Rock chileno y una aproximación al fenómeno Thrash en Chile. El tercer capitulo da cuentas de los enfoques metodológicos más idóneos para aproximarnos a nuestro objeto de estudio, y de que forma vamos a producir la información para dar cuenta del problema de investigación y de los objetivos propuestos. El siguiente capítulo nos entrega el análisis de la información que producimos. Mediante el análisis de los discursos de las y los jóvenes se pretende dar cuenta de ciertas estructuras subyacentes a la realidad del Thrash. Los análisis son guiados mediante una pauta que fue estructurada de acuerdo a los objetivos de la investigación. Un último capítulo da cuenta de las conclusiones obtenidas en base a la información analizada y los objetivos propuestos. La idea de la conclusión es básicamente lograr una formulación teórica respecto al problema que aporte una visión fidedigna respecto a la contracultura Thrash.
95

Le Survenant : la figure du fuyard hors-la-loi dans la littérature québécoise contemporaine en milieu rural

Malafouris, Layla 05 1900 (has links)
Consacré à l’étude de deux romans contemporains, soit La liberté des détours (2015) de Mathieu Blais et Dixie (2013) de William S. Messier, ce mémoire étudie la présence d’une régionalité transformée, voire déconstruite dans l’imaginaire littéraire québécois. Pour ce faire, il examine ces lieux fictifs à la lumière de la reprise de la figure du Survenant, imaginée par Germaine Guèvremont en 1945. Le premier chapitre présente la figure du nomade, des récits historiques au roman de la terre, pour réfléchir sur son évolution. Il explore ensuite la conception novatrice que lui accorde Guèvremont dans Le Survenant au moyen d’une analyse textuelle. Le deuxième chapitre s’attache à la définition de la régionalité, telle qu’elle est définie par Francis Langevin, en fonction des besoins relatifs au corpus primaire de cette étude. Cette approche nous permet d’analyser les filiations en relation avec le topos de l’étranger en milieu rural, et plus précisément la dichotomie entre « habitant » et « étranger » imposée par la littérature terroiriste. La méthode employée pour l’analyse des textes est inspirée des théories de l’intertextualité, de l’hypertextualité et de la narratologie. Finalement, le troisième chapitre examine les thématiques intertextuelles de la liberté et de l’héritage dans les romans contemporains, lesquelles adoptent une esthétique « rurale trash » caractérisée par un refus de l’idéalisation, comme la définit Mathieu Arsenault. De ce fait, le Survenant, idéalisé dans le roman de Guèvremont, se transforme en figure de fuyards hors-la-loi dans La liberté des détours et dans Dixie. / Dedicated to the study of two contemporary novels, La liberté des détours (2015) by Mathieu Blais and Dixie (2013) by William S. Messier, this thesis examines the presence of a transformed, even deconstructed, regionality in Quebec's literary imagination. To do so, it examines these fictitious places in light of the revival of the figure of the Survenant, imagined by Germaine Guèvremont in 1945. The first chapter presents the figure of the nomad, from the tales of history to the rural novel, to reflect on its evolution. It then explores Guèvremont's innovative conception of Le Survenant through textual analysis. The second chapter focuses on Francis Langevin's definition of regionality, based on the needs of the primary corpus of this study. It is a novel way of reflecting on their filiations to the topos of the foreigner in rural areas, and more specifically to the dichotomy between “inhabitant” and “foreigner” imposed by terroirist literature. The method used for the analysis of the texts is inspired by the theories of intextextuality, hypertextuality and narratology. Finally, the third chapter examines the intertextual themes of freedom and heritage in contemporary novels, which adopt a “rural trash” aesthetic characterized by a refusal of idealization, as Mathieu Arsenault defines it. As a result, the Survenant, idealized in Guèvremont's novel, is transformed into the figure of outlaw fugitives in La liberté des détours and Dixie.
96

Hydraulický čistící stroj / Hydraulic cleaner-machine

Lužný, Jan January 2020 (has links)
This diploma thesis deals with the design of hydraulic trash rack cleaning machine for waste water treatment plant. The first part of the thesis describes methods of removing coarse impurities from intake water to technological equipment. Furthermore, a specific design including calculation and choice of the drive is made. Part of the work is also solving the course of force effects and strength analysis of the most stressed parts. The work also deals with the comparison of design solution of hydraulic and mechanical drive of the machine. The attachment contains a drawing of the cleaning machine assembly and selected welded complex.
97

Design systému kontejnerů pro tříděný odpad / Design of Sorting Waste Containers System

Vostrikova, Daria January 2014 (has links)
Separated waste collection is one step in the recycling process. For this purpose, containers for recycling are used. This thesis investigates the new concept of containers design towards creating an original and compact solution for cities. The final solution is a set of containers where the key idea is based on the principle of building blocks. Another innovative feature of the design solution is the possibility to choose opening configurations. It provides variability along with adapting to surrounding area. The result is a design concept hat has effectively fulfilled functional, technological, ergonomic and aesthetic needs.
98

Simulátor čístícího stroje česlí / Simulator of Trash Rack Cleaning Machine

Boďa, Michal January 2017 (has links)
This diploma thesis deals with the realization of a simulator for a trash-rack cleaning machines in small hydroelectric power stations. This thesis contains adequate research about a trash-rack cleaning mashines. This diploma thesis is focused on detailed description of the hardware and software part of the created simulator and describes the realization of a control system, which verified the functionality of the simulator.
99

What makes a good loser? : An Ethnographic Study of Toxic Behaviors in Competitive Multiplayer Games

Romo Flores, Azul January 2020 (has links)
Over the past decades, the scholarly discourse of violent video games as a possible influence for aggressive behaviors has gained much attention, primarily relying on the content of such games. This study aims to explore the environment of competitive multiplayer gaming interms of technicality (e.g. game mechanics), social interactions within a video game, and additional resources outside of the game as possible influential factors for toxic behaviors in competitive multiplayer games. Bourdieusian social theory is applied to gain a better understanding of the relationship between agents (players) and the field (competitive gaming) and the relevance of gaming capital. This study is based on a digital ethnographic approach to gain a comprehensive understanding of the gaming environment, and reports on semi-structured online interviews with 14 participants aged between 17-40, to gain insight on players’ perception and responses towards toxic behaviors in competitive games. This study proposes a spectrum of toxic behaviors in competitive multiplayer games, in which actions may be distinguished based on the form of expression (eg. verbal, physical or in-game). Primary findings suggest there may be a causal relationship between a player’s knowledge ofa game and their conveyance of toxicity, regardless of age and gender. The degree of toxicity may vary depending on the player, and is more frequently performed by men. Lastly, toxic behaviors should not be examined in isolation from contextual factors such as game mechanics or social interactions, but need to be further explored as a medium-specific phenomenon.
100

Origins of Basal Sediment within Kettle Lakes in Southern Michigan and Northern Indiana

Dziekan, Mitchell Ryan January 2017 (has links)
No description available.

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