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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.
21

Sediment budget template applied to Aberdeen Pool

Sharp, Jeremy A. January 2007 (has links)
Thesis (M.S.)--Mississippi State University. Department of Civil and Environmental Engineering. / Title from title screen. Includes bibliographical references.
22

Navigacijos sąlygų gerinimo Nemuno upės ruože Kauno HE-Druskininkai ekonominis-socialinis įvertinimas / The economic-social evaluation of the navigation conditions dvelopment on Nemunas river section "Kaunas hydroeletric power station-Druskininkai"

Punys, Petras 03 June 2009 (has links)
Rengiant mokslinius tiriamuosius darbus, galimybių studijas, investicinius projektus bei kitus įvairių objektų plėtros galimybes apibūdinančius dokumentus, dažnai atliekama išsami techninė analizė, nuošalyje paliekant ekonominį-socialinį įvertinimą, viena tai lemiančių problemų – nesukurta universali ekonominio-socialinio įvertinimo metodika. Siekdama supaprastinti ir suvienodinti objektų plėtros galimybių tyrimą ir pagrindimą ekonominiu-socialiniu aspektu Europos Komisija patvirtino metodiką „Guide to cost-benefit analysis of investment projects“. Darbo objektas - mokslinis tiriamasis darbas „Navigacijos sąlygų gerinimas Nemuno upės ruože Kauno HE-Lietuvos-Baltarusijos valstybių siena“. Jame pateikiama vandens kelio Kauno HE-Druskininkai plėtros galimybių analizė technologiniu bei ekonominiu aspektais. Norint nustatyti ruožo Kauno HE-Druskininkai paruošimo bei naudojimo laivybai užtikrinimo eksploatacinius kaštus, atsiperkamumą, įvertinti alternatyvius scenarijų variantus, būtina atlikti technologinį bei ekonominį-socialinį įvertinimus. Tai suponuoja tyrimo problemą – optimaliausio ekonominiu-socialiniu požiūriu scenarijaus parinkimą bei įvertinimą. Naudojantis ekonominės-socialinės metodikos gairėmis atliekama 2006 m. LŽŪU mokslininkų VĮ Vidaus Vandens kelių direkcijos užsakymu parengto mokslinio tiriamojo darbo „Navigacijos sąlygų gerinimas Nemuno upės ruože Kauno HE-Lietuvos-Baltarusijos valstybių siena“ duomenų analizė, siekiant parinkti technologiniu bei... [toliau žr. visą tekstą] / During prepare process of scientific researches, feasibility studies, investment projects and other objects development feasibilities documentation, the technical evaluation is performed often, the economical-social evaluation isn’t popular as the technical. One of the main problems – the universal methodology of economical-social evaluation isn’t created. European Commission decided to simplify and unify objects development feasibilities documentation, and the methodology “Guide to cost-benefit analysis of investment projects“ was confirmed. The object – scientific research “The navigation conditions development on Nemunas river section “Kaunas hydroelectric power station-Lithuanian-Belarus border””. The feasibility analysis of the Nemunas river section “Kaunas hydroelectric power station-Druskininkai” development is formulated by the technological and economical aspects. Trying to count the expenditure of the adjusting the river section for navigation, the rentability, evaluate alternative scenarios, the full technological and socio-economic evaluation is needed. The main problem of the research is the selection and evaluation of the optimal scenario by the socio-economical aspects. According to this methodology, the data analysis of scientific research of LUOA scientists “The navigation conditions development on Nemunas river section “Kaunas hydroelectric power station-Lithuanian-Belarus border”” was made, tried to select the most optimal navigation conditions development... [to full text]
23

A multi-component indicator of stream condition for waterway managers: balancing scientific rigour with the need for utility

Ladson, Anthony Richard Unknown Date (has links) (PDF)
Measuring the environmental condition of waterways is of interest to river managers, governments and the community. In the State of Victoria, Australia and elsewhere, there is concern that environmental values of streams are declining and that information about the environment, needs to be considered when river management decisions are being made. / This thesis explores the use of environmental indicators as a tool to assist management of rivers. The promise of indicators is that they can turn large amounts of environmental data into simple, timely results and thereby provide an effective means of incorporating this information into river management decisions. It is also suggested that indicators will be useful for measuring the outcomes of management intervention and provide feedback on the effectiveness of strategies. / Can environmental indicators live up to this promise? This thesis examines this question by reviewing indicator systems that have been developed by others and then exploring, in detail, the Index of Stream Conditions (ISC) that is is intended as a tool to assist the management of rivers in Victoria. I argue that environmental indicators have a role at the level of regional waterway management authorities but only if they are closely aligned with managers’ needs. Without consideration of non-technical issues, indicators are unlikely to be used, so it is important to establish a balance between pragmatic constraints and the need for scientific rigour. A procedure to achieve this balance is described in this thesis and was applied to the development of the ISC. Selection of indicators and the choice of indicator frameworks are explored and the value judgements behind the interpretation of indicator scores are examined. / It is also important to consider the accuracy and sensitivity of indicators. Possible objectives for the use of indicators include benchmarking, detecting change and providing information to trigger management intervention. Case studies are used to explore the performance of indicators in practical applications in streams in Victoria in relation to these objectives. Extensive use is made of non-traditional statistical procedures, including bootstrapping, and results are presented that show the likely variance of indicator scores and the relationship between indicator objectives and required sampling effort.
24

Conservation and management of paddlefish in Mississippi with emphasis on the Tennessee-Tombigbee Waterway

O'Keefe, Daniel Mark, January 2006 (has links)
Thesis (Ph.D.)--Mississippi State University. Department of Wildlife and Fisheries. / Title from title screen. Includes bibliographical references.
25

A hidrovia Tietê-Paraná e a intermodalidade no Estado de São Paulo /

Felipe Júnior, Nelson Fernandes. January 2008 (has links)
Orientador: Márcio Rogério Silveira / Banca: Eliseu Savério Sposito / Banca: Adauto de Oliveira Souza / Resumo: A mundialização do capital se caracteriza pela existência de espaços relativos, que são decorrentes da própria lógica do sistema capitalista. Partindo dessa premissa, é notório que o crescimento da produção da natureza, das paisagens materiais e dos meios de produção conduz ao aumento progressivo da divisão do trabalho e das contradições sociais, diante de uma dialética intrínseca aos diferentes espaços geográficos. A acumulação de capitais no início do século XXI se baseia em processos de re-ordenamentos, como os de caráter técnicocientífico- informacional e público-privado, resultando num desenvolvimento desigual entre os diferentes territórios, sendo que as ações, articulações e investimentos do capital privado são fatores que possibilitam a existência desses antagonismos. A Hidrovia Tietê-Paraná e os portos interiores de Pederneiras-SP, Anhembi-SP e Santa Maria da Serra-SP representam a utilização da intermodalidade visando a otimização do transporte de mercadorias, a integração de diferentes territórios e a intensificação das interações espaciais e econômicas. / Abstract: The mundialization of capital is characterized by the existence of relative spaces resulted from the logic of the capitalistic system. Thus, it's notorious that the growth of nature production, material landscapes and productive forces lead to a progressive increase of the work division and social antagonisms, in front of a dialectic common to different geographic spaces. The capital accumulation in the beginning of the 21st century is based on the reorganization of technical, scientific, informative and public private proceedings, resulting in an unequal development among the different territories. The actions, articulations and investments on private capital are factors that enable the existence of these contradictions. The Tietê-Paraná Waterway and the inside ports of Pederneiras-SP, Anhembi-SP e Santa Maria da Serra-SP represents the use of the intermodality aiming the improvement on merchandises transportation, the integration of different territories and intensification of spatial and economical interactions. / Mestre
26

Estudo do efeito de acidentes na Hidrovia Tietê-Paraná: aspectos preventivos. / Study of the effect of accidents in the Tietê-Paraná Waterway: preventive aspects.

Alex Nunes Ferreira 11 December 2000 (has links)
Este trabalho examina os acidentes registrados na hidrovia Tietê-Paraná, identificando os mais importantes e respectivas causas, com a finalidade de propor formas de reduzir a probabilidade de ocorrência de tais acidentes. A revisão bibliográfica efetuada, embora contemple um número relativamente pequeno de obras, contribui para que se compreenda melhor os aspectos mais relevantes de acidentes ocorridos no transporte hidroviário. A análise da hidrovia, com a identificação dos pontos críticos para a navegação, das embarcações utilizadas e da mão-de-obra disponível, permite que se configure um painel para uma melhor compreensão dos principais acidentes e de suas causas. O estudo estatístico realizado, a partir de dados disponíveis na Capitania Fluvial de Barra Bonita, levou as seguintes conclusões: o principal problema são as colisões envolvendo comboios fluviais, representando 48,8 % do total de acidentes registrados; 60 % do total das colisões registradas se referiam a colisões contra pilares de pontes; a metodologia em vigor para a determinação dos vãos para a navegação na hidrovia Tietê-Paraná não atende as condições atuais de navegação. Com relação ao principal acidente identificado, apresenta-se uma discussão sobre a metodologia atualmente em vigor para o estabelecimento dos vãos para a navegação na Hidrovia Tietê-Paraná, examinando-se as medidas atualmente em implantação visando a minimização da probabilidade de ocorrência de colisões contra pilares de pontes e de suas conseqüências. A conclusão é que somente com estudos mais aprofundados, utilizando modelos de simulação de manobras para se obter o embasamento teórico-experimental de modo a se estudar o problema de colisões de embarcações contra pilares de pontes na hidrovia Tietê-Paraná, se poderá alcançar um metodologia para a determinação de vãos para a navegação, que contemple de maneira efetiva a segurança no tráfego hidroviário. / This study examines the accidents registered in Tietê-Paraná waterway, identifying the most important ones and respective causes, with the purpose of proposing means of reducing the probability of occurrence of such accidents. The bibliography survey carried out, although it includes a relatively small number of studies, contributes to a better understanding of the most important aspects of the accidents occurred in waterway transportation. From the analysis of Tietê-Paraná waterway, with the identification of its critical points for navigation, the employed vessels and the available workmanship, it is possible to sketch the scenary for a better comprehension of the main accidents and their causes. The accomplished statistical analysis, using the data available at the Barra Bonita Fluvial Command, lead to the following conclusions: the main problem are the collisions involving pushtows, representing 48,8 % of the total registered accidents; 60 % of the total registered collisions corresponds to collisions against bridges pillars. With respect to the main identified accident, it is presented a discussion about the methodology used for the determination of brigde span openings, showing that it does not fit to local navigation conditions. Procedures regarding to minimize the probability of collisions against bridges pillars and reduce their effects are mentioned. The conclusion is that only with more detailed studies, using both maneuvring simulation models and experimental trials with scale models, it will be possible to reach a methodology for the determination of bridge span openings which assures safer conditions for navigation along the Tietê-Paraná.
27

Avaliação estratégica dos corredores de exportação da soja cultivada no estado do Mato Grosso. / Strategic evaluation of the export corridors used to transport the soybeans produced in the state of Mato Grosso.

Giovani Pontes Trindade 18 August 2014 (has links)
Uma das principais razões para a falta de competitividade dos produtores de soja da região centro-oeste do Brasil é o custo de transporte da fazenda até o porto de destino para exportação, o que ocorre em função do desbalanceamento da matriz de transporte brasileira. Tendo por objetivo demonstrar as vantagens do modal hidroviário para o transporte de commodities agrícolas por longas distâncias, este trabalho de pesquisa propõe o uso da análise de decisão multicritérios para fazer a avaliação estratégica de sete corredores de exportação da soja cultivada no estado do Mato Grosso, de acordo com quatro objetivos fundamentais: Impacto Social; Impacto Ambiental; Impacto Econômico; Custos de Manutenção da Via. Um caso hipotético demonstra a aplicação do modelo MCDA. / One of the main reasons for the Brazilian soybean producers lack of competitiveness is the cost of transportation from the farm to the export Ports, due to the country´s unbalanced transport matrix. Trying to show the advantages of water transportation to transport commodities for long distances, this research proposes the use of multi-criteria decision analysis to support the strategic evaluation of seven freight transportation corridors used to export the soybean produced in the state of Mato Grosso, according to four fundamental objectives: Social Impacts, Environmental Impacts, Economic Impacts and Investment Costs. A hypothetical case demonstrates the application of the MCDA model.
28

Valoração econômica do impacto ambiental decorrente dos resíduos gerados pelo transporte fluvial no porto da Manaus Moderna

Santos, Antonio Tadeu Barbosa dos 19 May 2011 (has links)
Made available in DSpace on 2015-04-13T12:17:41Z (GMT). No. of bitstreams: 1 DISSERTACAO ANTONIO TADEU.pdf: 1591471 bytes, checksum: c2a31d58b09c4e2f4fd749053949dd9a (MD5) Previous issue date: 2011-05-19 / FAPEAM - Fundação de Amparo à Pesquisa do Estado do Amazonas / It is a fact that the population growth is responsible by demand increasing for transport services, by land, air or waterway. Given the almost nonexistence of the first two, the latter prevails in the case of the Amazon. Consisting of medium and large ships, which, it transports between 200 and 600 passengers by trip. The main consequence is the increased volume of waste generated during the travels. An alternative to this problem would be to create a tax system designed specifically to mitigate the environmental impact caused. As it is expected such taxation would minimize the adverse effects, once the obtained funds by taxation could be used to pay all or part of collection and disposal services for such wastes. Thus, it can suggest the following questions: "Would the passengers are willing to pay a monetary amount for the mitigation of environmental impact caused by solid waste generation? If so, how much is that amount? Consequently, the researched goal is to verify if the waterway transport users in Amazonas are willing to pay a monetary value, monthly, to mitigate the environmental impact resulting from waste generated during the travels. According to the results, it can conclude that users are willing to pay a value, being approximately R$ 67.00 / user / month. However, the charging of a monthly fee becomes impractical, since the frequency to use the service is not monthly, and neither constant. In this sense it is suggested that in future work should be considered a DAP value/passenger/trip. This value may also be biased by the distance or time of travel. / É fato que, com o grande crescimento da população, cresce também a demanda por serviços de transportes, sejam eles terrestres, aéreos ou marítimos. No caso da Amazônia prevalece o último. Representado em seu maior percentual por embarcações de médio e grande porte, as quais chegam a transportar de 200 a 600 passageiros em uma única viagem. A principal conseqüência disso é o aumento do volume de resíduos gerados nos deslocamentos. Uma alternativa para esse problema seria a criação de um sistema de tributação destinado especificamente à mitigação dos impactos ambientais gerados. Tendo-se como expectativa que tal tributação minimizaria os efeitos nocivos que até o momento são inevitáveis diante da ausência de infraestutura adequada para a coleta e destinação desses resíduos, uma vez que, o capital proveniente da tributação poderia ser utilizado para custear total ou parcialmente os serviços de coleta e destinação adequada para esses resíduos. Dessa forma podem-se levantar os seguintes questionamentos: Os usuários do transporte fluvial estariam dispostos a pagar um valor monetário para a mitigação dos impactos ambientais decorrentes dos resíduos sólidos gerados? Em caso afirmativo, qual seria esse valor? Consequentemente a meta almejada neste trabalho é a de verificar se os usuários do transporte fluvial que aportam no cais da Manaus Moderna, possuem disposição a pagar um valor monetário, mensal, para mitigar os impactos ambientais decorrente dos resíduos gerados durante o deslocamento. De acordo com os resultados obtidos, pode-se concluir que os usuários tem disposição a pagar, sendo esse valor de aproximadamente R$ 67,00 / usuário / mês. No entanto, a cobrança de um valor mensal torna-se impraticável, uma vez que a freqüência de uso do serviço pelos usuários não é mensal, e nem constante. Nesse sentido sugere-se que em trabalhos futuros seja considerada uma DAP por usuário por viagem. Podendo ainda esse valor ser ponderado pela distancia ou pelo tempo do deslocamento.
29

Os rios e as cidades. Estudo da hidrovia Paraguai-Paraná-Prata e o espaço urbano circundante / The rivers and the cities. Study of waterway Paraguay-Paraná-Plata and the surrouding urban-space

Gabriel Manzi Frayze Pereira 23 May 2014 (has links)
O trabalho considera a relação da Hidrovia Paraguai-Paraná-Prata com o espaço urbano latino-americano circundante. Essa hidrovia, apesar de ter estruturado a rede de cidades da região, gerou muitos conflitos geopolíticos, principalmente entre Brasil e Argentina, e questões macroeconômicas entre os cinco países envolvidos que não contemplam aspectos da realidade das populações ribeirinhas e dos espaços que habitam. O núcleo deste trabalho é a pesquisa realizada, ao longo de toda a extensão da hidrovia, por intermédio da qual foi possível observar o aproveitamento que as próprias cidades ribeirinhas fazem dos recursos fluviais. No trabalho são apresentados: o contexto geopolítico da hidrovia Paraguai-Paraná-Prata; a pesquisa de campo realizada; uma descrição e uma análise do território, a partir dos pontos de vista físico e da navegação, com base na hidrografia; as cidades adjacentes aos rios, visitadas durante a pesquisa, assim como algumas reflexões acerca desses espaços. Finalmente, apresentamos as principais conclusões às quais chegamos com o trabalho. / The work considers the relationsbip of the Paragoay-Paraná-Plata with the surrounding Latiu- American urban space. This waterway, despite having a structured network of cities in the region, generated many geopolítica! conflicts, espedally between Brazil and Argentina, and macroeconomic issues among the five countries involved that does not consider aspects of the reality of coastal populations and the spaces they inhabit. The core of this work is the field research we conducted along the entire length of the waterway, througb which we could see the marks of use that the riverside towns make of the river resources. Are presented in the work: the geopolitical context ofthe Paragoay-Paraná-Plata; the field research; a description and an analysis of the territory, from the physical and the navigation points of view based on hydrography; the visited towns adjacent to rivers, as well as some reflections on these spaces. Finally, we present the main conclusions to which we come througb the work.
30

Lodní doprava na kanálu Rýn - Mohan - Dunaj / Shipping on the Rhine-Main-Danube-Canal

Charousková, Lucie January 2008 (has links)
This paper surveys the inland water transportation on the Rhine-Main-Danube-Canal. Beginning with a consideration of the inland water transportation in Europe in the analysis, it briefly describes the canal's evolution and fundamental terms, which are related to the water-ways. The last part of the first chapter is dedicated to the comparison of several traffic carriers. In the second chapter the two predecessors of the Rhine-Main-Danube-Canal and the motivations to their construction are reviewed. In the more detailed inspection of the formation of the RMD-Canal, the crucial institutions, which are involved in this domain, are described. Besides the corporation "Rhein-Main-Donau AG", the "Deutscher Wasserstraßen- und Schifffahrtsverein Rhein-Main-Donau e.V." and the "Wasser- und Schifffahrtsdirektion Süd" belong to it. The third part of the available paper analyzes the shipping on the RMD-Canal and on the German part of the Danube out of an economic-geographical perception. Regarded are not only differences in shipping on the Rhine, on the canal itself and on the Danube, but also the charges for using the canal and for the locking of ships. Moreover, the RMD-Canal is observed out of the traffic-geographical aspect, whilst also analysing the prognoses in comparison to the reality of the amount of shipping. The present time situation is illustrated by the example of the amount of cargo, which has been transported in the last years. At the end of the paper the problematic passage between Straubing and Vilshofen and the solution of the abolishment of this bottleneck is described.

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