• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 24
  • 7
  • 4
  • 4
  • 3
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • Tagged with
  • 64
  • 11
  • 10
  • 10
  • 9
  • 9
  • 9
  • 7
  • 6
  • 6
  • 6
  • 5
  • 5
  • 5
  • 5
  • 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.
51

Avaliação dos parâmetros físicos, químicos e microbiológicos dos fertilizantes orgânicos produzidos pelas técnicas de compostagem e vermicompostagem da fração orgânica dos resíduos sólidos urbanos coletada em estabelecimentos alimentícios de São Carlos/SP / Evaluation of physical, chemical and microbiological parameters of an organic fertilizer produced by the composting and vermicomposting of organic fraction of municipal solid wastes collected in São Carlos city

Júlia Inforzato Guermandi 02 October 2015 (has links)
Apesar dos elevados teores de matéria orgânica nos resíduos domiciliares e da implantação da compostagem para os resíduos sólidos orgânicos ser prevista pela Política Nacional de Resíduos Sólidos (Lei n° 12.305/10), a adoção da prática como forma de tratamento ainda apresenta ações incipientes no país. Este trabalho teve como proposta a coleta seletiva da fração orgânica dos resíduos sólidos urbanos (FORSU) produzida em 19 estabelecimentos comerciais de São Carlos para a realização da compostagem e vermicompostagem. A primeira etapa do trabalho consistiu na verificação da adaptação dos proprietários dos estabelecimentos em relação ao sistema de segregação proposto e na avaliação da percepção dos mesmos em relação à separação dos resíduos orgânicos e da compostagem, sendo esta análise realizada através da aplicação de questionários. Na segunda etapa, foi realizada a compostagem em quatro leiras cilíndricas de alambrado de 1,2 m de diâmetro e 1 m de altura. Testou-se os seguintes tratamentos em cada leira: trituração e revolvimento, não trituração e revolvimento, não trituração e não revolvimento (controle) e não trituração e não revolvimento com tubos de PVC. Verificou-se, através do monitoramento dos parâmetros físicos, químicos e microbiológicos e de análises estatísticas, as diferenças e similaridades entre os tratamentos. A terceira etapa iniciou-se após a estabilização dos compostos. Foram inoculadas 500 minhocas da espécie Eisenia foetida em uma quantia entre 20-25 kg de composto retirado das leiras revolvidas e os mesmos parâmetros da etapa anterior foram monitorados na vermicompostagem. Os resultados encontrados na etapa 1 indicaram que: os estabelecimentos realizaram a correta segregação dos resíduos, mostrando-se bem adaptados; quase a metade dos entrevistados desconheciam a técnica de compostagem; e, embora a maioria realizasse a separação da FORSU, a mesma era coletada de forma não diferenciada e encaminhada diretamente ao aterro. Na etapa 2, constatou-se que: o revolvimento influenciou na manutenção da temperatura termofílica por períodos mais prolongados, na correção da umidade, nos valores de pH , nitrogênio, relação C/N, CRA, metais, macro e micro nutrientes e granulometria; em relação à trituração, com exceção da granulometria, os demais parâmetros monitorados foram similares a leira não triturada, demostrando pouca influência de sua adoção no processo de compostagem; na leira composta por tubos de PVC, os registros de temperatura foram menores que as demais, de forma que o dispositivo ocasionou um resfriamento excessivo. Concluiu-se que somente a etapa 2 foi suficiente para o atingimento dos limites legais estabelecidos para os fertilizantes orgânicos, sendo os benefícios da adoção da vermicompostagem na etapa 3 relacionados aos incrementos das propriedades agronômicas de fertilidade de solo. / Despite the presence of high levels of organic matter in household wastes and the implementation of composting for organic wastes provided by the National Policy on Solid Waste (Law No. 12,305/10), the composting practice as a treatment is still incipient in Brazil. This study aimed at the selective collection of the organic fraction of municipal solid wastes (OFMSW) produced in 19 establishments in São Carlos city for use in composting and vermicomposting techniques. The first stage of the study consisted in an investigation on the adaptation to the segregation system proposed and evaluation of the owners\' perceptions regarding the separation of organic waste and composting through questionnaires. The second stage was devoted to the composting. The collected waste was deposited onto four cylindrical piles of 1.2 m diameter and 1 m height. The treatments evaluated in each pile were trituration and turning, no trituration and turning, no trituration and no turning (control), and no trituration and no turning of PVC pipes. The monitoring and statistical analysis of the physical, chemical and microbiological parameters revealed differences and similarities in each treatment. The third stage started after the stabilization of the compost. Five hundred earthworms of Eisenia foetida specie were inoculated in 20-25 kg of compost taken from two piles and the same parameters of the previous step were monitored. In step 2, the turning influenced the maintenance of the thermophilic stage for longer periods, humidity correction, values of pH, nitrogen, C/N relation, WRC, metals, micro and macronutrient and particle size. Except for the particle size, trituration exerted little influence on the parameters. The lowest temperatures were recorded in a pile composed of PVC pipes. It can be concluded that only the second step was sufficient for the achievement of legal limits for organic fertilizers and the benefits of vermicomposting as a post treatment technique (step 3) are related to the increase in the agronomic properties of soil fertility.
52

The potential role of payment for ecosystem services in protected area management in Rwanda: A case study from Gishwati-Mukura national park

Gakunde, Yves P. 21 August 2020 (has links)
No description available.
53

Evaluating AHDriFT Camera Traps and Traditional Survey Methods for Eastern Massasauga Rattlesnake (Sistrurus catenatus) Presence-Absence

Amber, Evan Douglas 05 October 2021 (has links)
No description available.
54

Cycle-GAN for removing structured foreground objects in images / Cycle-GAN för att ta bort strukturerade förgrundsobjekt i bilder

Arriaza Barriga, Romina Carolina January 2020 (has links)
The TRACAB Image Tracking System is used by ChyronHego for the tracking of ball and players on football fields. It requires the calibration of the cameras around the arena which is disrupted by fences and other mesh structures that are positioned between the camera and the field as a safety measure for the public. The purpose of this work was the implementation of a cycle consistent Generative Adversarial Network (cycle-GAN) for removing the fence from the image using unpaired data. Cycle-GANs are part of the state-of-the-art of image-to-image translation and can solve this kind of problem without the need of paired images. This makes it an exciting and powerful method and, according to the latest investigations in the current work, it has never been used for this kind of application before. The model was able to strongly attenuate, and in some cases completely remove, the net structure from images. To quantify the impact of the net removal a homography matching was performed. Then, it was compared with the homography associated to the baseline of blurring the image with a gaussian filter and the original image without the use of any filter. The results showed that the identification of key-points was harder on synthetic images than on the original image with or without small Gaussian filters, but it showed a better performance against images blurred with filters with a standard deviation of 3 pixels or more. Despite the performance not being better than the baseline in all the cases it always added new key-points, and sometimes, it was able to find correct homographies where the baseline could not. Therefore, the cycle-GAN model proved to complement the baseline. / TRACAB Image Tracking System används av ChyronHego för spårning av bollen och spelaren påfotbollsplaner. Detta kräver kalibrering av kamerorna runt arenan som störs av staket och andra nätstrukturer som är placerade mellan kameran och fältet som en säkerhetsåtgärd för publiken. Detta examensabrete fokuserar påimplementeringen av en cycle-GAN för borttagning av nätet från bilden med hjälp av oparade data. Cycle-GAN är en bild-till-bild-översättning state-of-the-art teknik och det kan lösa denna typ av problem utan parade bilder. Detta gör det till en spännande och kraftfull metod och enligt den senaste forskningen har det aldrig använts för denna typ av tillämpning förut. Modellen kunde kraftigt dämpa och i vissa fall helt ta bort nätstrukturen från bilder. För att kvantifiera effekterna av avlägsnandet av nätet utfördes en homografimatchning. Därefter jämfördes det med homografin associerad med baslinjen där bilden görs suddig med ett gaussiskt filter och originalbilden utan användning av något filter. Resultaten visade att identifieringen av nyckelpunkter var svårare påsyntetiska bilder än påoriginalbilder med eller utan småGauss-filter, men det visade bättre prestanda än bilder som var suddigt med filter med en standardavvikelse på 3 pixlar eller mer. Trots att prestandan inte var bättre än baslinjen i alla fall lade versionen utan nätet alltid till nya nyckelpunkter, och ibland kunde den hitta korrekta homografier där baslinjen misslyckades. Därför, cycle-GAN-modellen kompletterar baslinjen.
55

Personal Property

Lindsay, Carolyn M. 03 September 2013 (has links)
No description available.
56

Il nous faut une barrière ! : sociologie politique des mobilisations pro-barrière en Israël et en Arizona (Etats-Unis) / We need a fence! : A political sociology of pro-fence mobilizations in Israel and in Arizona (United States of America)

Simonneau, Damien 06 November 2015 (has links)
En Israël et aux États-Unis, les politiques de défense matérialisant des limites territoriales au moyen de« barrières » ont pour point commun de susciter des mobilisations infra-étatiques (en Israël à partir de2001 pour une « barrière de sécurité » en Cisjordanie ; en Arizona à partir de 2010 pour une « barrièrefrontalière » avec le Mexique). Les opérations homologues de cadrage pro-barrière des situations demobilités et de présence de Palestiniens et de Mexicains que ces mobilisations remplissent, contribuentà entretenir le consensus sur le rôle du militaire dans la construction et le traitement d’un « problèmepublic » de la mobilité. Le territoire marqué par la barrière devient alors le lieu d’une performancepublique destinée à rassurer les citoyens israéliens et états-uniens. Par une analyse des représentations,des modes d’actions et des pratiques de sécurité pro-barrière, nous examinons les spécificitésnationales et géopolitiques de ces deux fabriques de barrière. Au-delà de ces spécificités, ladémonstration compare trois opérations homologues remplies par ces mobilisations dans leurssystèmes politiques : la problématisation des situations de mobilité et de présence d’étrangersindésirables ; la « sécuritisation » en une réponse militaire à apporter à ces situations ; et lapublicisation du cadrage pro-barrière par l’action collective et protestataire contre les gouvernements. / Beyond controlling mobility of undesirables, the function of the building up of “fences” on territorialboundaries is also to reassure fenced-in citizens. By analyzing the cases of Israel and the USA, thepresent dissertation investigates how the fenced territory becomes the place of a public performanceaimed to reassure Israeli and US citizens. The starting point of the demonstration is that such defensepolicies nourish social mobilizations (in Israel from 2001 in favor of a “security fence” in the WestBank; in Arizona from 2010 in favor of a “border fence” with Mexico). I rely on analyses ofrepresentations, actions and security practices of such mobilizations to investigate national andgeopolitical specificities. Beyond these specificities, I compare three analogous political operations bypro-fence movements in their political systems. First, they construct situations of mobility andpresence of undesirables as problematic. Second, they securitize these situations as a security issuescalling for a military response. Finally, they diffuse pro-fence framing by collective and dissentingactions against governments. Thus, they contribute to maintain a consensus over the role of themilitary in the construction and the management of a “public problem” of mobility in these twosocieties.
57

FPC防護柵の性能照査型設計に関する研究

劉, 斌, LIU, Bin, 伊藤, 義人, ITOH, Yoshito 03 1900 (has links)
No description available.
58

Modelagem da paisagem da Floresta Estacional Decidual no Vão do Paranã, Goiás / Modelling landscape of seasonal decidual forest form Vao do Parana Valley, State of Goias

HERMUCHE, Potira Meirelles 10 December 2010 (has links)
Made available in DSpace on 2014-07-29T12:05:37Z (GMT). No. of bitstreams: 1 Tese Potira Hermuche.pdf: 2991051 bytes, checksum: c339e425379e980c3d0328785a889e09 (MD5) Previous issue date: 2010-12-10 / Current dry forests in the Vão do Paranã region, northeastern Goiás State, Brazil, are strongly fragmented mainly because of intense cattle ranching activities. This affects the ecological dynamics of flora and fauna since the connectivity among remaining fragments is reduced. The objectives of this study was: a) to map dry forests occurrences in the study area; b) to determine the relevant geoenvironmental indicators that control dry forest occurrences in the landscape; c) to find areas with high pressure in terms of human occupation of remaining fragments; and d) to propose an operational strategy for dry forest conservation. The map of dry forest occurrences was obtained from the image interpretation of multitemporal LANDSAT satellite scenes. The environmental controllers analyzed were climate, topography, geology and soils. The human occupation pressure in the remaining fragments was analyzed based on the metrics obtained from land use and land cover map, environmental data and social and economical data. The proposal for conservation strategy of dry forests was based on the idea of using tree species such as the Aroeira (Myracroduon urundeuva) found in cultivated pastures as living fences before they are cut as invasors by the farmers. Results indicated the presence of approximately 190,000 hectares of dry forests in the study area. The largest fragments were mostly found in the central and northern parts of Vão do Paranã. It was found that there was a strong relationship between lithology (carbonatic rocks) and the presence of dry forests, both in plain areas and in rocky outcrops. A detailed qualitative analysis indicated the main controls for the establishment of the dry forests: strong water table variation in the soil-bedrock profile, the soil eutrofism and the climatic seasonality, allowing a hierarchy that can be described as: strong water table variation in the soil-bedrock profile > soil eutrofism > lithology > climatic seasonality > rainfall > soils > hipsometry > slope. As the most remaining fragments are located in hilly areas with limestone outcrops, only 1% presented high and very high tendencies for land occupation, though they are facing strong wood selective loggings. The substitution of dead fences for living fences and the increment of isolated trees indicated an increase of permeability of matriz and of conectivity among remaining vegetation fragments. The simulation of a scenery based on three test sites indicated that such substitution would result, for the entire Vao do Paranã region, in 338,520 trees saved (4.2 km2) and 5,077,800 new trees planted in form of living fences (63,5 km2). Regarding isolated trees, in the case of all pasture areas present an average of 310 trees per km2, this would represent 42 km2 of vegetation cover. / Atualmente, a Floresta Estacional Decidual (FED) na região do Vão do Paranã, nordeste do estado de Goiás, encontra-se bastante fragmentada principalmente em função da intensa atividade pecuária, fato que compromete a dinâmica ecológica da flora e da fauna por meio da alteração na conectividade entre os fragmentos remanescentes. O objetivo da presente tese foi: a) mapear as áreas de ocorrência atual de FED na área de estudo; b) determinar os principais controles geoambientais relacionados com o seu estabelecimento na paisagem; c) indicar as áreas com forte tendência de ocupação dos fragmentos remanescentes; e d) apresentar uma estratégia operacional para sua conservação na região. O mapeamento das áreas de ocorrência de FED foi obtido com base na análise de imagens multitemporais do satélite LANDSAT, enquanto os principais controles geoambientais analisados foram clima, topografia, geologia e solos. As tendências de ocupação dos fragmentos remanescentes foram analisadas com base nas métricas obtidas de mapas de uso e cobertura da terra, dados ambientais e dados socioeconômicos. A sugestão de estratégia de conservação da FED foi baseada na proposta de utilizar espécies arbóreas como a Aroeira (Myracroduon urundeuva) que rebrotam em áreas de pastagens cultivadas na produção de cercas vivas. Os resultados indicaram a presença na região de aproximadamente 190.000 hectares de FED. Os fragmentos maiores dessa fitofisionomia encontram-se distribuídos essencialmente na região centro-norte do Vão do Paranã. Verificou-se a existência de uma forte relação entre a litologia (rochas carbonáticas) e a presença de FED, tanto em áreas planas como em afloramentos rochosos. A análise qualitativa detalhada indicou como principais controles para o estabelecimento da FED a variação hídrica do perfil solo-rocha, o eutrofismo dos solos e a sazonalidade climática, permitindo uma hierarquização que pode ser descrita como : variação hídrica do perfil solo-rocha> eutrofismo dos solos> litologia > sazonalidade climática > total pluviométrico > classes de solos > hipsometria > declividade. Como a maioria dos fragmentos remanescentes está localizada nas áreas de relevo acidentado com presença de afloramentos de calcário, apenas 1% apresentou tendências alta e muito alta de uso e ocupação, apesar de sofrerem com intensa exploração seletiva de madeira. A substituição das cercas mortas por cercas vivas e o incremento de árvores isoladas indicou aumento na permeabilidade da matriz e na conectividade entre os fragmentos de vegetação remanescentes. A simulação de um cenário baseado em três áreas-teste indicou que essa substituição resultaria, para todo o Vão do Paranã, em 338.520 árvores poupadas (4,2 km2) e 5.077.800 novas árvores plantadas em forma de cercas vivas (63,5 km2). No que diz respeito às árvores isoladas, caso todas as áreas de pastagem apresentassem uma média de 310 árvores isoladas por km2, essas representariam 42 km2 de cobertura vegetal.
59

On the Fence

Medrano, Estevan 12 1900 (has links)
Living the vast majority of my life in an area that celebrates diversity but thrives because of illegal cross-border activities (undocumented workers, drug imports) at times the distance between the United States and Mexico is in fact as thin as the width of a fence. Though it is typical for a filmmaker to hope to present a unique take on a subject, given how I have seen the topics of immigration and the perspective of the purpose of homeland security portray, I am confident that there is an opportunity to show these issues in a more personal, less aggressive light with the use of first person accounts instead of a dependence on the most violent aspects of these topics. The main subject will give character to this agency by blurring the lines of his life as an agent and as a citizen.
60

Vliv silničních záchytných systémů na počet a druh dopravních nehod / Impact of type road restraint systems on number and type of accidents

Šťastná, Barbora January 2013 (has links)
The aim of the master´s thesis is to analyze the types of road restraint systems, a description of testing road restraint systems and the use of wire rope safety fence in the Czech Republic and abroad. In addition, there is an analysis on the highway of R48 in the section Nový Jičín – Příbor and assessed in terms of the number and type of accidents in connection with wire rope safety fence.

Page generated in 0.0269 seconds