Tesis sobre el tema "Reservoirs – Management"
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Kaseke, Evans. "Fuzzy linear programming and reservoir management". Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26708.
Texto completoApplied Science, Faculty of
Civil Engineering, Department of
Graduate
Xie, Ming 1973. "Prediction of daily net inflows for management of reservoir systems". Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33043.
Texto completoMalik, Kazim A. "An intelligent portfolio management approach to gas storage field deliverability maintenance and enhancement". Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4833.
Texto completoTitle from document title page. Document formatted into pages; contains vii, 105 p. : ill. (some col.) ; map (part col.). Includes abstract. Includes bibliographical references (p. 58-59).
Seetha, Ram Katakam V. "Conjunctive And Multipurpose Operation Of Reservoirs Using Genetic Algorithms". Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/222.
Texto completoSeetha, Ram Katakam V. "Conjunctive And Multipurpose Operation Of Reservoirs Using Genetic Algorithms". Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/222.
Texto completoPong, Chung-nam. "Water quality of reservoirs in Hong Kong /". View the Table of Contents & Abstract, 2007. http://sunzi.lib.hku.hk/hkuto/record/B39604238.
Texto completoKleopa, Xenia A. "Optimal reservoir operation for drought management". Ohio : Ohio University, 1990. http://www.ohiolink.edu/etd/view.cgi?ohiou1183650664.
Texto completoMoore, David L. "Reservoir management during drought an expert system approach". Ohio : Ohio University, 1993. http://www.ohiolink.edu/etd/view.cgi?ohiou1175718241.
Texto completoKistenmacher, Martin. "Reservoir system management under uncertainty". Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/49012.
Texto completo龐仲嵐 y Chung-nam Pong. "Water quality of reservoirs in Hong Kong". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B45013809.
Texto completoHelfer, Fernanda. "Influence of Air-Bubble Plumes and Effects of Climate Change on Reservoir Evaporation". Thesis, Griffith University, 2012. http://hdl.handle.net/10072/365996.
Texto completoThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Griffith School of Engineering
Full Text
Wilson, Helen M. "An evaluation of alternative management strategies for shallow eutrophicated lakes and reservoirs". Thesis, University of Plymouth, 1995. http://hdl.handle.net/10026.1/1870.
Texto completoDuvenage, Paul. "Developing a method for prioritising maintenance for reinforced concrete reservoirs". Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96671.
Texto completoENGLISH ABSTRACT: The Department of Water Affairs and Forestry infrastructure has shown a decline in condition from 2006 to 2011, according to the Infrastructure Report Card. With the increase in population, the additional demand placed on the already ageing infrastructure together with inadequate maintenance exacerbates the deterioration of these structures. Much has been done to improve the provision of basic water services to South Africans, however to ensure that basic water services remain intact, maintenance of the existing structures is of paramount importance. The storage of potable water in a hygienic manner is essential to the water provision network, thus focus is placed on water reservoirs (in particular reinforced concrete water reservoirs). It has been identified that there is a lack of appropriate policies, practices, procedures and guidelines related to the maintenance of municipal water reservoirs. The solution that this study proposes is to develop a maintenance prioritization method for reinforced concrete water reservoirs. This method specifically provides the user (i.e facility manager) with a systematic approach to assessing and allocating a condition value to the reservoir, which is used to prioritize maintenance activities. This method follows the approach used by the TRH/TMH manuals and bridge management systems that are implemented throughout South Africa. This method includes, the breakdown of essential reservoir components thus facilitating the development of future asset registers, the deterioration mechanisms that affect these reservoirs along with the appropriate identification methodologies and the percentage contributions of each component to the overall condition of the facility. The research for the prioritization method is conducted by combining literature with feedback from industry professionals. The literature featured investigation of the components of concrete reservoirs and deterioration mechanisms that affect these components. The results of the feedback from the industry professionals indicated that some of the components contribute more to the overall condition of the facility than others. This contribution is based on the importance of the component with regard to the provision of service and safety. Thus, in the case of a concrete reservoir, the walls are more essential to the provision of service and safety than the access components, thus its contribution percentage is higher. The research suggests that if the prioritization method could successfully be implemented, it will provide the users additional information that can be used to prioritise maintenance activities at both component and network level. Further, it may allow for the development of a comprehensive asset register of concrete reservoirs and may also aid in the financial planning related to the maintenance of these structures.
AFRIKAANSE OPSOMMING: Die Departement van Waterwese en Bosbou se infrastruktuur het n afname in kondisie gradering getoon van 2006 tot 2011 volgens die Infrastruktuur Verslag Kaart. Die toename in die bevolking veroorsaak bykomende druk op die reeds verouderende infrastruktuur wat tesame met swak instandhouding die agteruitgang van hierdie strukture vererger. Baie is gedoen om die voorsiening van basiese waterdienste aan Suid-Afrikaners te verbeter, maar dit is uiters noodsaaklik dat bestaande strukture in stand gehou word om te verseker dat basiese waterdienste beskikbaar bly. Die berging van drinkwater op ’n higiëniese wyse is noodsaaklik vir die watervoorsieningsnetwerk met die gevolg dat daar op waterreservoirs, spesifiek gewapende beton waterreservoirs, gefokus word. Daar is vasgestel dat daar nie toepaslike praktyke, prosedures en riglyne met betrekking tot die instandhouding van van munisipale waterreservoirs bestaan nie. Die oplossing wat deur hierdie studie voorgestel word, is om ’n onderhoud prioritisering metode vir gewapende beton waterreservoirs te ontwikkel. Hierdie metode bied spesifiek aan die gebruiker (reservoir bestuurder) ’n sistematiese benadering om ’n toestandwaarde ten opsigte van die reservoir te bepaal en toe te wys, wat gebruik word om instandhoudingsaktiwiteite te prioritiseer. Hierdie metode volg die benadering van die TRH/TMH en brug bestuur sisteme, wat geimplimenteer word reg deur Suid Afrika. Hierdie metode sluit in die klassifiseering van hoof komponente van ’n gewapende beton reservoir wat die ontwikkeling van toekomstige bateregisters, die degenerasiemeganismes wat hierdie reservoirs beïnvloed tesame met die gepaste identifiseringsmeganismes en die bydrae volgens persentasie van elke komponent tot die algehele toestand van die fasiliteit, fasiliteer. Die navorsing ten opsigte van die prioritiserings metode is uitgevoer deur literatuur met terugvoer van bedryfskundiges te kombineer. Die literatuur wat geraadpleeg is handel oor die ondersoek na die komponente van gewapende beton reservoirs en degenerasiemeganismes wat hierdie komponente beïnvloed. Die studie dui aan dat, aan die hand van die bedryfskundiges se terugvoer, sommige komponente meer as ander tot die algehele toestand van die fasiliteit bydra. Hierdie bydrae is gebaseer op die belangrikheid van die komponent in terme van die voorsiening van dien ek veiligheid. Dus, is die geval van n beton reservoir, is die mure meer van beland as die toegans komponente in terme van voorsiening van diens en veiligheid. Die navorsing gee te kenne dat indien die prioritiserings metode suksesvol geïmplementeer kan word, dit die gebruiker bykomende inligting kan gee wat gebruik kan word om die instandhoudingsaktiviteite te prioritiseer op beide netwerk en komponente vlak. Verder, mag daar ’n omvattende bateregister van gewapende beton reservoirs ontwikkel kan word wat dus sal help met die finansiële beplanning rondom die instandhouding van hierdie strukture.
Ruhl, Nathan A. "The Lotic-Lentic Gradient in Reservoirs and Estuaries". Ohio University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1339177201.
Texto completoPeterson, Nick Ryan. "Subspecies composition, genetic variation and structure of Largemouth Bass in Puerto Rico reservoirs". Thesis, Mississippi State University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1604215.
Texto completoSubspecies composition and genetic variation are important to the growth and survival of Largemouth Bass and information on these genetic characteristics is required for proper management of the species. In Puerto Rico, a genetic evaluation is needed to develop management plans for Puerto Rico reservoirs and maintain Florida Largemouth Bass at the Maricao Hatchery. Subspecies composition was characterized among reservoirs and the contemporary Maricao Hatchery broodstock in Puerto Rico, and metrics were compared between subspecies and hybrids among reservoir populations. Genetic variation and structure was determined and compared to Largemouth Bass populations in their native range. Florida subspecies were prevalent in all populations and non-introgressed subspecies seemed to be better adapted to the island than introgressed forms. Genetic diversity was lower in Puerto Rico populations and substantial genetic structure among populations was lacking. These results provide genetic information to guide future management and propagation of Largemouth Bass in Puerto Rico.
García, Iturbe Selma L. "Simulation of physical and chemical processes in reservoirs: Two case studies". Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc4968/.
Texto completoBertone, Edoardo. "Decision Support System for Manganese Forecasting and Proactive Treatment in Subtropical Water Reservoirs". Thesis, Griffith University, 2015. http://hdl.handle.net/10072/366512.
Texto completoThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Griffith School of Engineering
Science, Environment, Engineering and Technology
Full Text
Corrado, Kristi C. "An Analysis of the Corriental Reservoir Sediments in Relation to Ancient Maya Land Management and Sustainability Practices at Tikal, Guatemala". University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396454782.
Texto completoScott, Robert Nigel. "Algal and related biological studies of reservoirs in South Wales with reference to management of water treatment systems". Thesis, Cardiff University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238187.
Texto completoTaymaz, Esmaeili. "THREE-DIMENSIONAL NUMERICAL STUDY ON FREE-FLOW FLUSHING FOR ENHANCING THE EFFICIENCY OF SEDIMENT MANAGEMENT IN RESERVOIRS". 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/202697.
Texto completoAkpinar, Ezgi. "Aguadas: A Significant Aspect of the Southern Maya Lowlands Water Management Systems". University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1307320694.
Texto completoMorillo, Sebastian. "Engineering solutions to water quality problems in lakes". University of Western Australia. Centre for Water Research, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0153.
Texto completoMulhearn, David Thomas. "Community collaboration and restriction of use for the control of invasive threats in multipurpose reservoirs". Restricted access (UM), 2007. http://libraries.maine.edu/gateway/oroauth.asp?file=orono/etheses/37803141.pdf.
Texto completoBrown, Krista M. "GROUNDWATER-STREAM INTERACTIONS AND WATER QUALITY OF FORMER DAM RESERVOIRS IN NORTHEAST, OHIO". Kent State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=kent1564530847224908.
Texto completoBrown, Allan W. "The use of selected Scottish Reservoirs by waterfowl : the role of monitoring in site designation, conservation and management". Thesis, University of Dundee, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.521702.
Texto completoFernholz, Savannah. "Relative Densities, Population Characteristics, and Sampling Efficiency of Bighead and Silver Carp in Reservoirs of the Tennessee River and Cumberland River". Thesis, Tennessee Technological University, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=10979492.
Texto completoBighead Carp Hypophthalmichthys nobilis and Silver Carp H. molitrix (collectively referred to as bigheaded carp) were introduced to the United States in the 1970s and escaped into the Mississippi River from aquaculture ponds. Since their escape, bigheaded carp have become established in the Mississippi River Basin, including the Ohio River and its tributaries. More recently, bigheaded carp have invaded the Tennessee and Cumberland rivers. Little research has been conducted on bigheaded carp in Tennessee waters, with preliminary studies investigating the distribution and characteristics of established bigheaded carp populations, including growth rates and recruitment. My study represents the first systematic sampling of bigheaded carp in the Tennessee and Cumberland rivers, both tributaries to the Ohio River, and in large reservoirs in the southeast U. S. Standardized, multi-gear sampling methods were used to sample bigheaded carp in Kentucky Lake and Pickwick Lake on the Tennessee River and Lake Barkley and Cheatham Lake on the Cumberland River in 2017 and 2018. Overnight gill nets were the most effective gear, capturing an average of 17 Silver Carp per gill net gang. Short-set gill nets captured an average of one Silver Carp per gill net gang, and electrofishing captured an average of one Silver Carp per 10-minute electrofishing transect. Maximum total length (TL) was 1,390 mm for Bighead Carp and 1,111 mm for Silver Carp, and the maximum age for both species was 11 years. Average age and condition of Silver Carp was higher in upstream impoundments than downstream, and thus suggested an early invasion period from Ohio River movements. Gonadosomatic index (GSI; egg mass weight to body weight ratio) was also higher in upstream impoundments than downstream impoundments. Higher GSI values were observed in the spring and summer, when bigheaded carp may begin to spawn in response to high flows. Length-at-age estimates for the four reservoirs suggested bigheaded carp growth rates in the Tennessee and Cumberland rivers are similar to other populations in the US, indicating populations may be experiencing density effects in southeastern impoundments. No young of year (YOY) bigheaded carp were captured during the study, but weak and missing year classes due to erratic recruitment patterns are common in bigheaded carp, and monitoring for YOY fish should continue. Mean catch-per-unit-effort (CPUE) was not significantly different among reservoirs for the three gear types, and no significant seasonal variation in mean CPUE was observed for overnight gill nets. A lack of differences in CPUE across sampling seasons suggested population densities could be assessed as agencies could fit into their schedules. Overall, the results represent the first large-scale standardized sampling effort for bigheaded carp across four southeastern states and provide integral population information for natural resource managers. Future monitoring efforts should continue to track characteristics of bigheaded carp populations in the Tennessee and Cumberland rivers and determine effective control and management strategies for populations in large impoundments.
Haynie, Rebecca S. "Investigating risks, effects, and a potential management strategy for avian vacuolar myelinopathy on Southeastern reservoirs using an eco-epidemiological approach". Connect to this title online, 2008. http://etd.lib.clemson.edu/documents/1211389032/.
Texto completoSalami, Yunus. "Risk Management in Reservoir Operations in the Context of Undefined Competitive Consumption". Doctoral diss., University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5478.
Texto completoPh.D.
Doctorate
Civil, Environmental, and Construction Engineering
Engineering and Computer Science
Civil Engineering
Brown, Forrest C. "The fish population of an east-central Indiana borrow pit lake with management implications". Virtual Press, 1985. http://liblink.bsu.edu/uhtbin/catkey/412514.
Texto completoChoodegowda, Ravikumar B. "Modeling small reservoirs in the Great Plains to estimate overflow and ground-water recharge". Diss., Kansas State University, 2009. http://hdl.handle.net/2097/4610.
Texto completoDepartment of Biological & Agricultural Engineering
James K. Koelliker
Small reservoirs catch and store water for long periods and they decrease streamflow and increase ground-water recharge. A field monitoring program provided the measured water depth for four years in several reservoirs in the Republican River Basin where there are concerns about their aggregate effects in the basin. The daily water budget operation for one reservoir was developed. Daily seepage rates were estimated by using precipitation, inflow and evaporation which was assumed equal to grass reference evapotranspiration (ET0), that average 120 to 150 cm/yr, along with the measured stage-storage and stage-surface area relationships. Two computer simulation modules, written in FORTRAN 95, were developed to estimate 1) overflow and gross seepage and 2) potential for ground-water recharge underneath the reservoir. Required daily input data are precipitation, ET0, and inflow from the watershed area. Required reservoir site characteristics include stage-storage and stage-surface area relationships, a standard seepage rate (S0) at 14 different levels in the reservoir, soil-water and plant-growth characteristics and a monthly crop-residue factor. The gross seepage module calculates water depth that determines daily overflow, the water-surface area for evaporation and the head of water on the 14 levels to cause seepage losses. If a level is not inundated, seepage is zero. If a level is inundated less than 0.3-m, S0 is used. When the water head (hL) on a level exceeds 0.3 m, the seepage rate (SL) is increased by, SL = S0 * (hL/0.3)0.25. This relationship was chosen after testing several exponent values between 0 and 1. The modules were calibrated on one reservoir and verified on two others in northwestern Kansas. Results showed runoff from the watersheds averaged about 1.2 to 1.6 cm/yr from the average annual precipitation of 46 to 62 cm. The three reservoirs reduced streamflow at the reservoir site by 74 to 97%, but 90 to 95% of the retained runoff was calculated to contribute to ground-water recharge. Several sensitivity analyses for model inputs were done. Results showed that, the ratio of the average annual inflow volume from the watershed area to the reservoir storage volume was the most sensitive input variable tested.
Crouch, Ryan T. "Adding value to upground drinking water reservoirs: what makes a good yellow perch (Perca flavescens) fishery?" Bowling Green State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1291841439.
Texto completoMaia, James Lacerda. "Técnicas para o gerenciamento quanti-qualitativo de reservatórios com usos múltiplos da água: estudo de caso do reservatório de Barra Bonita - SP". Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/18/18139/tde-13102009-101327/.
Texto completoThe quantitative aspects rule the engineering practices aimed at reservoirs management. However, the concern about the qualitative aspects of water has increased, since a growing number of reservoirs are being used for many kinds of applications. In the process of reservoir management it is necessary to take into consideration all the uses that will benefit from the system itself. Hence, the objective of this study was the use of computational techniques for quantitative and qualitative analysis of the multiple applications of the reservoir of Barra Bonita - SP, performing computer simulations using the model MIKE BASIN, proposing and testing an optimization model with non-linear programming based on the constraint method and incorporating the use of geotechnologies for spatial (horizontal distribution) and time (seasonal distribution) analysis of the reservoir water quality. It was selected the reservoir of Barra Bonita for analysis because of the multiple applications of the water (power generation, navigation, recreation, tourism and fishing) and the presence of a lock for transposition of the gap between the dam downstream and the power plant accumulation reservoir, which makes the reservoir a different area of study. The results of the simulations performed in MIKE BASIN model to evaluate the multiple applications of the reservoir showed that the best scenario was the one in which the priorities were the same for power generation and navigation. The maximization of the hydropower generation through the optimization model, did not impair other uses of the reservoir (mainly navigation) and even in the dry season, the average power generated by the model registered values above the average real power generated by the Hydroelectric Power Plant of Barra Bonita-SP (from 2001 to 2005). The use of geotechnologies (Surfer software) provided good conditions for space-time analysis of water quality when coupled with the knowledge about the characteristics and conditions of the studied environment. The data obtained showed that some variables, such as electrical conductivity and turbidity significantly increase from the dry season to the rainy season, since they are directly related to the supply of organic and inorganic materials. The hydrogen potential (pH) undergoes a very small variation from the dry season to the rainy season, but its values vary spatially, with higher values found in the compartment of the dam during the dry season, and at the end of the arm of the Piracicaba river during the wet season. The dissolved oxygen greatly increases from the rainy season to the dry one, but in both periods the highest concentrations are found at the end of the arm of the river Piracicaba - SP. It is emphasized that only the dissolved oxygen (dry season) did not fit the pattern of CONAMA Resolution nº 357/2005, to class II waters.
Weber, Michael [Verfasser], Bertram [Akademischer Betreuer] Boehrer y Andreas [Gutachter] Lorke. "Optimizing withdrawal from drinking water reservoirs to combine downstream river demands with a sustainable raw water management / Michael Weber ; Gutachter: Andreas Lorke ; Betreuer: Bertram Boehrer". Landau : Universität Koblenz-Landau, Campus Landau, 2018. http://d-nb.info/1161409882/34.
Texto completoBrogan, Connor O'Beirne. "A Dam Conundrum: The Role of Impoundments in Stream Flow Alteration". Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/85005.
Texto completoMaster of Science
OCK, Giyoung. "PARTICULATE ORGANIC MATTER DYNAMICS IN THE DOWNSTREAM OF DAM RESERVOIRS: ROLES OF CHANNEL GEOMORPHOLOGY AND RESPONSES OF BENTHOS COMMUNITIES". 京都大学 (Kyoto University), 2010. http://hdl.handle.net/2433/120804.
Texto completoSequeira, Erik Augusto da Cruz. "Gestão do perímetro de rega da Barragem de Banca Furada: uma proposta". Master's thesis, ISA/UL, 2015. http://hdl.handle.net/10400.5/11112.
Texto completoThe São Nicolau Island has recently benefited from its first dam, the Banca Furada. In a region where water availability is limited and it is critical to manage this resource. This work aims to draw up a proposal for improving irrigation management for the irrigation area of the Banca Furada dam. To prepare this paper was performed a socio-economic survey to farmers who will benefit on the irrigation perimeter Were selected 12 crops within the most commonly used by farmers in the area and raised three rainfall scenarios. The irrigation crops consumption was achieved in the three scenarios and then proceeded to the simulation of reservoir operation for the same scenarios with "Simula" programme in VBA (Visual Basic) developed by Pro- Sistemas. As result it was found, that the irrigation areas cannot depass 36 ha, 41 ha and 55 ha, for scenarios 1, 2 and 3 respectively. Crops showed a gross margin exceeding 1,000 euros. The water consumption of crops does not differ much between scenarios, with two water consumption peaks on the perimeter, from November to February and from March to June.
Lambert, Sébastien. "Transmission and management of brucellosis in a heterogeneous wild population of Alpine ibex (Capra ibex)". Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1278.
Texto completoThe management of infectious diseases in wildlife reservoirs is particularly challenging and faces several limitations. The development of appropriate management strategies requires a detailed understanding of the factors affecting the transmission and persistence of the infectious agent in the population. Among these factors, heterogeneity of transmission is a common characteristic in natural host-pathogen systems. Indeed, wild animals express a broad range of behaviours, are organised in a variety of social and spatial structures, occupy many areas with very different characteristics and belong to a large diversity of species. Such heterogeneities, from between-individuals to between-species, may result in different contributions to the overall number of new cases of infections. Thus, understanding transmission heterogeneity could provide valuable insights on how to effectively manage these systems, by targeting the individuals or areas that are responsible for most transmissions. The aim of this thesis was to provide insights on the monitoring and management of infectious diseases in heterogeneous wild populations, using Brucella melitensis infection in a French population of wild Alpine ibex (Capra ibex) as a case study. The biology of brucellosis and the ecology of Alpine ibex makes this case study a good candidate for transmission heterogeneity at several levels. Using bacterial examinations, we first established that only 58% of seropositive individuals were at risk to excrete Brucella, and that this risk decreased with increasing age. Then, we took advantage of detailed information available on ibex population dynamics, behaviour, and habitat use, and on epidemiological surveys, to build an individual-based model in order to quantify heterogeneity at the individual and spatial levels. The transmission is extremely heterogeneous between individuals, with females generating around 90% of the new cases of brucellosis infection, and between spatial units, three of the five socio-spatial units (the core area) accounting for more than 80% of brucellosis transmission. Using statistical models to estimate the temporal dynamics of the seroprevalence and of the force of infection in the population, we found evidence that the massive captures with test-and-remove operations that were conducted in 2015 managed to reduce brucellosis transmission in the population. Based on these results, we evaluated several predictive disease management strategies in the individual-based model. Our results confirmed that the primary strategy should be to remove as many seropositive individuals as possible, and that strategies targeting females and/or the core area are more effective than untargeted management. Although there is no silver bullet for the management of brucellosis in the population of study, targeted strategies offer a wide range of promising refinements to classical sanitary measures. We therefore encourage to look for heterogeneity in other infection-wildlife systems and to evaluate potential targeted strategies for improving management schemes in terms of efficiency and acceptability
Mendes, Ludmilson Abritta. "O impacto dos usos consuntivos na operação de sistemas de reservatórios para produção de energia elétrica". Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/3/3147/tde-10052013-213408/.
Texto completoThis research presents a study conducted to evaluate the impacts of the hydroelectric power plants operation caused by the multipurpose uses of water resources. There are many conflicts involved in the operation of a reservoir system mainly due to competitive uses of water. That is the case of São Francisco River, located between the Southeast and Northeast regions of Brazil. The hydro system in this region has an installed capacity of 10.7 GW and supports 13% of the Brazilian hydro electrical power. Due to the scarcity of water in this region, the operation of this system has been questioned in the last few years. The competitive uses of water in this region are water supply, irrigation and animal raising. The non-consumptive uses of water are navigation and environmental protection. The electrical sector is planning to review the reservoir operation rules in order to attend these demands. The study was conducted by applying the HIDRO model, which is an optimization PNL model developed with GAMS software that maximizes hydropower production. A new objective function was added to the HIDRO model in order to consider the treatment of energy and water demands the both. The trade-offs among energy, consumptive uses and environment protection are presented. The lack of energy due the increasing water demand implies costs which are evaluated according to some demand scenarios and different scarcity historical periods. Also the effect due the operation of the water transfer system from São Francisco to the neighboring basins is considered.
Rezende, Jozrael Henriques. "Um estudo sobre a gestão de resíduos e efluentes em marinas, terminais hidroviários de passageiros e embarcações de turismo e lazer no Reservatório de Bariri/Hidrovia Tietê-Paraná". Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/3/3135/tde-01082007-172554/.
Texto completoThe environmental aspects related to the daily operations in small craft inland harbors, in passenger waterway terminals, in leisure and tour vessels, in addition to other supporting facilities such as fluvial shipyards, indicate the need for adoption of sustainable models of management of such organizations, due to the fact that their activities are directly related to water bodies and to river banks and reservoirs, which are strategic areas for the aquatic ecosystems balance and protected by a strict environmental legislation. This study focus on technological options and proposes the implementation of a management program of waste and sewage in order to adapt the facilities and the operation of the marinas, passenger terminals and recreational boating to the ISO 14000 serial rules and to the environmental legislation in relation to the destination of solid wastes, oily residues and sewage effluents. The proposals were based on data from an investigation about the current situation of the facilities, the equipment, and the waste and sewage management, carried on both a marina and a tour navigation company which operate in the Bariri reservoir in the Tietê-Paraná Waterway. The results of this study demonstrate the importance of the implementation of programs for training and controlling the waste and sewage produced in shore and off-shore activities. These programs are based on the reduction of the production of waste, on the segregation, on the reutilization and the recycling of the materials, as well as on environmental education and on the treatment and final destination of waste and sewage. This way, they may prevent, control and act against water resources pollution besides making business more attractive and the places safer and more appealing for users and workers.
LUCENA, Dátia Paula Marques Maia. "Simulações da implantação de ações de gestão no Açude Epitácio Pessoa e seus impactos na crise hídrica em Campina Grande-PB e região". Universidade Federal de Campina Grande, 2018. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/396.
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Reservatórios localizados em regiões semiáridas apresentam alta variabilidade nas afluências hídricas, baixas vazões de regularização, comparadas a outros em climas mais úmidos, e são sujeitos a grandes perdas por evaporação, principalmente quando cheios, fazendo com que a gestão efetiva dos mesmos seja de extrema importância. Este trabalho mostra como modelos matemáticos podem ser utilizados como ferramenta de apoio a tomada de decisão na operação de reservatórios e como medidas de gestão podem afetar situações de racionamento e crise hídrica. O caso de estudo dessa pesquisa é o reservatório Epitácio Pessoa (Boqueirão), localizado em Campina Grande-PB, semiárido brasileiro. O açude Boqueirão recentemente enfrentou a maior crise hídrica desde sua construção, uma gestão não otimizada pode ser apontada como uma das causas do agravamento dessa crise hídrica. É proposta uma metodologia que consiste na definição de oito cenários, compostos por ações ou conjunto de ações que poderiam ter sido tomadas em relação à gestão hídrica do manancial. Dentre o conjunto de ações propostas, tem-se ações meramente gerenciais e outras que envolvem a utilização de técnicas de redução de perdas por evaporação. Tais cenários foram simulados no modelo matemático AcquaNet, para um período de 63 meses, para analisar qual ação teria sido a mais benéfica para a população, e como cada conjunto de ações poderiam ter impactado, quantitativamente, a questão do racionamento em Campina Grande e região. Para fazer a análise e comparação desses cenários, foram utilizados índices de sustentabilidade (confiabilidade, resiliência e vulnerabilidade), bem como os valores dos volumes finais do reservatório e atendimento médio à demanda em cada cenário. A partir destes, foram feitas as comparações entre os cenários para identificação das medidas que causaram maior impacto no sistema. Os resultados encontrados demonstraram que as medidas que incluíram a adoção de técnicas de redução de evaporação na bacia hidráulica do reservatório poderiam ter evitado completamente a adoção do severo racionamento a que a população foi submetida por um longo período de tempo. Adicionalmente, fica demonstrado que modelos matemáticos de simulação podem ser muito úteis na tomada decisão quanto a gestão de reservatórios em épocas de escassez hídrica, principalmente em regiões de clima árido ou semiárido.
Reservoirs located in semi-arid regions present high hydrological variability, low regularization flows, compared to others in more humid climates, and are subject to large evaporation losses, mainly in their periods of high water levels, making their effective management extremely important. This article aims to show how mathematical models can be used as a tool to support decision-making process in the operation of reservoirs and how management measures can affect rationing and water crises. The case study of this research is the Epitacio Pessoa Reservoir (also called Boqueirão), located in the city of Campina Grande-PB, Brazilian semiarid region. The Boqueirão went through the biggest water crisis since its construction, a non-optimized management of these resources can be pointed as one of the causes of these water crisis aggravation. It is proposed a methodology that consists in the definition of eight scenarios, composed by actions or set of actions that could have been taken regarding to the water management of this reservoir during that period. Among the set of actions proposed, there are managing actions and others involving the use of techniques to reduce evaporation losses. The scenarios were simulated with the mathematical model AcquaNet, for a period of 63 months, in order to analyze which action would have been the most beneficial for the population, and how each set of actions could have, quantitatively, affected the water shortage issue in Campina Grande and region. Sustainability indexes (reliability, resilience and vulnerability), reservoir final volumes and average meeting of the water demand requirements, were used to analyze and compare the scenarios. From these results, comparisons were made among the scenarios to identify the measures that would have caused the greatest impact on the system. The results pointed out that measures which included the use of evaporation rates reduction techniques in the reservoir’s hydraulic basin could have completely avoided the adoption of severe rationing to which the population was submitted for a long time. In addition, it is demonstrated that mathematical simulation models can be useful in decision-making processes regarding the management of reservoirs in a water scarcity situation, especially in arid or semi-arid climate regions.
Allen, Gerald R. "An Analysis of the Fate and Transport of Nutrients in the Upper and Lower Scioto Watersheds of Ohio". The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1310663396.
Texto completoGarcia, Christopher Jacob. "Management of Global Reservoir Sedimentation: Evaluating RESCON 2 for Sediment Management Alternatives". BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7505.
Texto completoNajafiazar, Bahador. "Mathematical Optimization in Reservoir Management". Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for petroleumsteknologi og anvendt geofysikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-27058.
Texto completoKing, James Allen. "Optimal reservoir operation for drought management". Ohio University / OhioLINK, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1183649698.
Texto completoBuchanan, Crawford S. "Benders decomposition method in reservoir management". Thesis, University of Edinburgh, 1999. http://hdl.handle.net/1842/22790.
Texto completoAdams, Lauren. "Optimized Reservoir Management for Downstream Environmental Purposes". Thesis, University of California, Davis, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=10973511.
Texto completoIn regulated rivers, reservoir operation decisions largely determine downstream river temperature and flow. Computational methods can minimize the risk and uncertainty of making regrettable environmental release decisions and aid operations planning and performance prediction. Mathematical modeling in particular can optimize the timing and magnitude of reservoir release decisions for downstream benefit while accounting for seasonal uncertainty, water storage impact, and competing water demands. This dissertation uses optimization and modeling techniques, modifying traditional optimization modeling to include temporal correlation in outcome variables and incorporating long-term planning and risk management into prescribed reservoir operations. The proposed method is implemented in one case, a) with a state variable that tracks outcome benefits over time (fish population size) and, in another case, b) with a maximin stochastic dynamic program solution algorithm that maximizes net operational benefit and minimizes worst-case outcomes (for cold water habitat delivery). This method is particularly useful for environmental flow management, when the water quality and quantity of the river and reservoir in one time step affect the quantity and quality in the reservoir and the river for later periods. Better solutions with these methods internalize risk and hedge releases at the beginning of an operating season to maximize downstream benefit and reduce the probability of catastrophe for the season and future years. Maximizing the minimum cold-water habitat area over months of a season or multiple years, or maximizing a river indicator variable explicitly, could likely help, for example, maximize an out-migrating salmon smolt population downstream. The method is demonstrated with a case study optimizing environmental releases from Folsom Dam and another optimizing temperature management from Shasta Dam in northern California. These results inform general rules for environmental flow management and temperature management of reservoirs, with specific policy recommendations for both Folsom and Shasta reservoirs. In both cases, the added value from employing hedging rules help reservoir operations minimize the risk of environmental catastrophe and conserve storage both within an operating season and across years.
Joinson, Daniel. "Subterranean wireless communication for oil reservoir management". Thesis, University of Cambridge, 2005. https://www.repository.cam.ac.uk/handle/1810/272141.
Texto completoGomes, Jorge S. "Reservoir description of the Arab-C Dukhan carbonate reservoir for improved reservoir management and use as a subsurface analogue". Thesis, Heriot-Watt University, 2001. http://hdl.handle.net/10399/1141.
Texto completoCetinkaya, Oguz Kagan. "Management Of Reservoir Sedimentation Case Studies From Turkey". Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607016/index.pdf.
Texto completoubuk I Dam, Bayindir Dam, ivriz Dam and Borç
ka Dam. Sediment measurements are made by governmental agencies in Turkey. In this study characteristics of these measurements will be presented for the future sediment related studies. Then sediment removal strategies which were used in RESCON will be introduced. Evaluation of RESCON results have been made and compared with previous studies for verification except Borç
ka Dam, since it is under construction.
Mamede, George Leite. "Reservoir sedimentation in dryland catchments : modelling and management". Phd thesis, Universität Potsdam, 2008. http://opus.kobv.de/ubp/volltexte/2008/1704/.
Texto completoSemiaride Gebiete sind hauptsächlich durch geringe Wasserressourcen gekennzeichnet und unterliegen häufig dem Risiko der Wasserknappheit. In diesen Gebieten ist die Wasserbereitstellung für Bewässerung und Trinkwasserversorgung stark von der oberflächlichen Speicherung in Stauseen abhängig, deren Wasserverfügbarkeit nachteilig durch Sedimentablagerung beeinflusst wird. Zur Wiedergabe des komplexen Sedimentablagerungsverhaltens in Stauseen von semiariden Gebieten und die Auswirkungen von Sedimentmanagementmaßnahmen wird ein Sedimentationsmodell entwickelt und mit dem WASA-SED Modell gekoppelt, das für die Modellierung der Abflussbildung und des Sedimenttransportes in Einzugsgebieten geeignet ist. Das Sedimentationsmodell beinhaltet zwei Ansätze, die unter der Berücksichtigung verschiedener Stauseengrößenklassen und Datenverfügbarkeit eingesetzt werden können. Für die Stauseen mit verfügbaren Informationen über ihre geometrischen Eigenschaften (wie Stauseetopographie und Höhe-Fläche-Volumen-Beziehung) und weitere Kenngrößen wie Ablagerungsmächtigkeit, Korngrößenverteilung und Sedimentdichte, kann ein detaillierter Modellansatz für die Sedimentablagerung verwendet werden. Wo diese Informationen nicht verfügbar sind, wird auf einen vereinfachten Ansatz zurückgegriffen. Der detaillierte Modellansatz ermöglicht die Betrachtung von Ablagerungsmustern im Stausee und Einschätzungen über die Effektivität von Sedimentmanagementmaßnahmen hinsichtlich der Sedimententlastung. Dieser Ansatz beruht auf der Simulation des Sedimenttransportes entlang eines Stauseelängsprofils. Für die Berechnung des Sedimenttransfers wird der Stauseekörper in einer Folge von Querprofilen repräsentiert. Der Sedimenttransport wird dabei korngrößenspezifisch entsprechend der Transportkapazität berechnet. Dafür stehen vier verschiedenen Sedimenttransportgleichungen zur Verfügung. Der vereinfachte Modellansatz ist für die Simulation des Sedimenttransfers in Gebieten mit hoher Stauseedichte geeignet, jedoch können weder Sedimentmanagementmaßnahmen noch die räumliche Verteilung der Ablagerungen berücksichtigt werden. Dafür werden die Stauseen in Abhängigkeit von ihrer Größe und Position in kleine und strategische Stauseen unterteilt. Dabei sind strategische Stausseen solche mit mittlerem bis großem Volumen sowie einer Lage im Hauptgerinne oder solche mit sonstiger besonderer Bedeutung. Kleine Stauseen hingegen befinden sich an den Nebenflüssen und werden im Modell in aggregierter Form durch ihre Einteilung in Stauseegrößenklassen repräsentiert. Ein Kaskadenverfahren wird für den Wasser- und Sedimentlauf zwischen den Stauseeklassen verwendet. Dabei werden für jede Stauseeklasse der Wasser- sowie Sedimenthaushalt für einen hypothetischen repräsentativen Stausee mit mittleren Eigenschaften berechnet. Die Sedimentaufnahme und die Korngrößenverteilung des abgegebenen Sediments werden mit dem Überlaufanteil-Ansatz berechnet. In dieser Studie werden drei Modellanwendungen vorgestellt: • Für den 92,2 Mio.m³-großen Barasona-Stausee (Vorland der Zentralpyrenäen, Aragon, Spanien) wird die Modellierung der Sedimentablagerung mit dem detaillierten Modellansatz vorgenommen. Die Kalibrierung dafür wurde in zwei Schritten durchgeführt, um Änderungen im Stauseemanagement Rechnung zu tragen. Die ModellValidierung wird schließlich für eine andere Simulationsperiode vorgenommen. Dabei wird ersichtlich, dass die Prozesse der Sedimentablagerung gut durch das Modell wiedergegeben werden. • Das Modell wird auf das 933 km²-große Benguê-Einzugsgebiet, das sich im semiariden Nordosten Brasiliens befindet, angewendet. Dieses Einzugsgebiet ist durch eine hohe Dichte an kleinen Stauseen, charakterisiert, die fast 45% des Gebietes umfasst, wofür jedoch wenige Messdaten verfügbar sind. Deshalb werden der Wasser- und Sedimenttransport mit dem vereinfachten Modellansatz berechnet. Dabei werden drei Konfigurationen des Kaskadenverfahrens getestet. • Die Modellanwendung erfolgt erneut für den Barasona-Stausee bezüglich der Effektivität der Sedimentmanagementmaßnahmen. Eine Kostenanalyse ermöglicht die Auswahl geeigneter Maßnahmen für den Stausee. Dadurch wird eine Beurteilung der verschiedenen Sedimentmanagementstrategien ermöglicht. Im Allgemeinen unterliegen die Simulationsergebnisse großen Unsicherheiten, teilweise wegen der geringen Datenverfügbarkeit, andererseits durch die Unsicherheiten in der Modellstruktur zur korrekten Wiedergabe der Sedimentablagerungsprozesse.