Dissertations / Theses on the topic 'Water resources development Computer simulation'
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Mounir, Adil. "Development of a Reservoir System Operation Model for Water Sustainability in the Yaqui River Basin." Ohio University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1513880139368117.
Full textHu, Zhengyu, and D. Phillip Guertin. "The Effect of GIS Database Grid Size on Hydrologic Simulation Results." Arizona-Nevada Academy of Science, 1991. http://hdl.handle.net/10150/296461.
Full textThe use of geographic information systems (GIS) for assessing the hydrologic effects of management is increasing. In the near future most of our spatial or "mapped" information will come from GIS. The direct linkage of hydrologic simulation models to GIS should make the assessment process more efficient and powerful, allowing managers to quickly evaluate different landscape designs. This study investigates the effect the resolution of GIS databases have on hydrological simulation results from an urban watershed. The hydrologic model used in the study was the Soil Conservation Service Curve Number Model which computes the volume of runoff from rainfall events. A GIS database was created for High School Wash, a urban watershed in Tucson, Arizona. Fifteen rainfall-runoff events were used to test the simulation results. Five different grid sizes, ranging from 25x25 square feet to 300x300 square feet were evaluated. The results indicate that the higher the resolution the better the simulation results. The average ratio of simulated over observed runoff volumes ranged from 0.98 for the 25x25 square feet case to 0.43 for the 300x300 square feet case.
McMahon, Paul Christopher. "Simulation of corn yield by a water management model for a Coastal Plain soil in Virginia." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/53719.
Full textMaster of Science
Cadot, Paule-Darly 1960. "Development of a model for design of water harvesting systems in small scale rainfed agriculture." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277109.
Full textPioltine, Victor. "Análise do atendimento às demandas hídricas superficiais no reservatório da usina Bariri (SP) utilizando o simulador computacional Mike Basin." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/18/18139/tde-04122009-110435/.
Full textIt is clear the importance of water availability both qualitative and quantitative for the development of a region inserted into a catchment area. This development must be planned and managed to the minimization of conflicts caused by multiple uses of water so that all demands have the maximum reliability in their care and also may be the maximization of social, economic and environmental in the region. Thus, this study, analyzed the surface water and its demands for different sectors users located in the drainage of the reservoir of the Bariri (SP) power plant. Through the application of hydrological simulation MIKE BASIN was examined system performance in meeting the demands for water current conditions (year 2008) and for future scenarios with years to 2010, 2025 and 2050. From this study, it is concluded that volume of water needed to meet the demands water surface in the region of study and energy production reached its goal in every period simulated.
Ferreira, Antonio de Pádua Scott Alves. "Análise de conflitos de usos múltiplos da água auxiliada por simulação computacional: bacia do rio Sapucaí - Mirim/Grande." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/18/18139/tde-09062016-092814/.
Full textIn the same proportion that fresh water sources are been reduced, competition for its has grown, immediate consequence of urban areas expansion and new agroindustrial demands. Conflicts generated by this competition tend to affect the sustainable development and the progress as well, once this competitiveness situation means efficacy loss to large amounts of public and privy investments, and also injuries to less structured users. Considering above facts, the goal of this paperwork is to establish water availability allocation scenarios between Sapucai-Mirim/Grande basin\'s users, aiming to settle a balanced distribution of the several use finalities came from the same water resource. Such goal can be reached through system performance indicators analysis - reliability, vulnerability and resilience - which will be estimated through IRAS simulation model aid.
Polynkin, A., L. Bai, J. F. T. Pittman, J. Sienz, Leigh Mulvaney-Johnson, Elaine C. Brown, A. Dawson, et al. "Water assisted injection moulding: development of insights and predictive capabilities through experiments on instrumented process in parallel with computer simulations." Maney Publishing, 2008. http://hdl.handle.net/10454/3511.
Full textAn idealised model of core-out in water assisted injection moulding (WAIM) is set up to isolate the effect of cooling by the water on the deposited layer thickness. Based on simulations, this is investigated for a specific case as a function of Pearson number and power law index. It is found that cooling significantly reduces the layer thickness to the extent that a change in the flow regime ahead of the bubble, from bypass to recirculating flow, is possible. For shear thinning melts with high temperature coefficient of viscosity, the simulations show very low layer thickness, which may indicate unfavourable conditions for WAIM. Although in the real moulding situation, other effects will be superimposed on those found here, the results provide new insights into the fundamentals of WAIM. Investigation of other effects characterised by Fourier and Reynolds numbers will be reported subsequently. Some early process measurement results from an experimental WAIM mould are presented. Reductions in residual wall thickness are observed as the water injection set pressure is increased and the duration of water bubble penetration through the melt is determined experimentally. The formation of voids within the residual wall is noted and observed to reduce in severity with increasing water injection pressure. The presence of such voids can be detected by the signature from an infrared temperatures sensor.
Zaini, Raafat Mahmoud. "Modeling Manifest and Latent Structures in a University: Understanding Resources and Dissent Dynamics." Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-dissertations/435.
Full textLingen, Carl, and Nathan Buras. "Dynamic Management of a Surface and Groundwater System on Both Sides of the Lower Yellow River." Department of Hydrology and Water Resources, University of Arizona (Tucson, AZ), 1987. http://hdl.handle.net/10150/614178.
Full textCardoso, Fernanda Armelinda. "Educação ambiental utilizando a temática recursos hídricos para sensibilizar professores do ensino básico." Universidade Tecnológica Federal do Paraná, 2015. http://repositorio.utfpr.edu.br/jspui/handle/1/1427.
Full textThis work performed through both quantitative and qualitative approaches, using the methodological principles of action research. It has as objective to draw the attention of basic education teachers as far as the Hydric Resources (HR) are concerned, as well as to the importance of the insertion of Environmental Education (EE) in pedagogical practices. In order to attain this objective, a course, called “Environmental Education emphasizing Water Resources”, was offered to teachers from 6th to 9th grades from Parana’s public schools. The course, which lasted 16 weeks, performed both in three in-person meetings and through the Virtual Learning Environment (VLE), Moodle 2.5 platform. Texts, papers, videos and articles were available for the teachers in VLE. Forums about the studied themes also carried, so that participants could interact and exchange experiences. Data obtained through the analysis from the questionnaires answered by the attenders during both the in- person meetings and in VLE, and through attender’s reports during the course, VLE’s activities and Environment Action Projects (EAP) developed by teacher groups in schools. First, a diagnosis about the 82 attender’s environmental knowledge and perception was perform were. Some of the questions from this first data gathering guided the course’s following steps. The participants considered the Moodle platform easy to work with. More than that, they considered the materials published in the libraries enriching the tutor’s help adequate. The tasks considered well elaborated and important in aiding the comprehension of the proposed themes. Considering all offered resources, the videos received considerable attention, since they obtained several views and use were by the teachers in the classroom. As far as the forums are concerned, opinions diverged. Some considered the exchange of experiences very helpful, while others considered it not helpful or proposed other approaches. The course attenders also suggested that a higher number of in-person meetings would improve the quality of the course. Besides containing interesting talks, they favor the exchange of experiences and a better understanding of the themes in focus, since there is real time interaction. Finally, the course was finished with 17 EAP, which performed by participant teachers in schools. These EAPs involved the school environment and its surroundings, promoting improvements for the community. It is possible to conclude from this research that updating courses, as well as continuous formation courses, can act as an alternative to reduce existing gaps in teacher’s education and encourage them to work with Environmental Education and its pedagogical practices.
Scherberg, Jacob N. "The development of a hydrological model of the Walla Walla Basin using Integrated Water Flow Model." Thesis, 2012. http://hdl.handle.net/1957/29731.
Full textGraduation date: 2012
Atim, Janet. "Application of integrated water resources management in computer simulation of River Basin's status - case study of River Rwizi." Thesis, 2010. http://hdl.handle.net/10352/110.
Full textDuring the last few years, concern has been growing among many stakeholders all over the world about declining levels of surface water bodies accompanied by reduced water availability predominantly due to ever increasing demand and misuse. Furthermore, overexploitation of environmental resources and haphazard dumping of waste has made the little water remaining to be so contaminated that a dedicated rehabilitation/remediation of the environment is the only proactive way forward. River Rwizi Catchment is an environment in the focus of this statement. The overall objective of this research was to plan, restore and rationally allocate the water resources in any river basin with similar attributes to the study area. In this research, Integrated Water Resources Management (IWRM) methodology was applied through Watershed/Basin Simulation Models for general river basins. The model chosen and used after subjection to several criteria was DHI Model, MIKE BASIN 2009 Version. It was then appropriately developed through calibration on data from the study catchment, input data formatting and its adaptation to the catchment characteristics. The methodology involved using spatio-temporal demographic and hydrometeorological data. It was established that the model can be used to predict the impact of projects on the already existing enviro-hydrological system while assigning priority to water users and usage as would be deemed necessary, which is a significant procedure in IWRM-based environmental rehabilitation/remediation. The setback was that the available records from the various offices visited had a lot of data gaps that would affect the degree of accuracy of the output. These gaps were appropriately infilled and gave an overall output that was adequate for inferences made therefrom. Several scenarios tested included; use and abstraction for the present river situation, the effect of wet/dry seasons on the resultant water available for use, and proposed projects being constructed on and along the river. Results indicated that the river had insufficient flow to sustain both the current and proposed water users. It was concluded that irrespective of over exploitation, lack of adequate rainfall was not a reason for the low discharge but rather the loss of rainwater as evaporation, storage in swamps/wetlands, and a considerable amount of water recharging groundwater aquifers. Thus, the proposed remedy is to increase the exploitation of the groundwater resource in the area and reduce the number of direct river water users, improve farming methods and conjunctive use of groundwater and surface water - the latter as a dam on River Rwizi. The advantage of the dam is that the water usage can be controlled as necessary in contrast to unregulated direct abstraction, thus reducing the risk of subsequent over-exploitation.
Vaal University of Technology
Giacomoni, Marcio. "Complex Adaptive Systems Simulation-Optimization Framework for Adaptive Urban Water Resources Management." Thesis, 2012. http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11474.
Full textTeweldebrhan, Aynom Tesfay. "The hydrosalinity module of ACRU agrohydrological modelling system (ACRUsalinity) : module development and evaluation." Thesis, 2003. http://hdl.handle.net/10413/3613.
Full textThesis (M.Sc.)-University of Natal, Pietermaritzburg, 2003.
Olofintoye, Oluwatosin Onaopemipo. "Real time optimal water allocation in the Orange River catchment in South Africa." 2015. http://hdl.handle.net/10321/2392.
Full textThe planning and management of water resources systems often involve formulation and establishment of optimal operating policies and the study of trade-off between different objectives. Due to the intricate nature of water resources management tasks, several models with varying degrees of complexities have been developed and applied for resolving water resources optimisation and allocation problems. Nevertheless, there still exist uncertainties about finding a generally consistent and trustworthy method that can find solutions which are very close to the global optimum in all scenarios. This study presents the development and application of a new evolutionary multi-objective optimisation algorithm, combined Pareto multi-objective differential evolution (CPMDE). The algorithm combines methods of Pareto ranking and Pareto dominance selections to implement a novel generational selection scheme. The new scheme provides a systematic approach for controlling elitism of the population which results in the simultaneous creation of short solution vectors that are suitable for local search and long vectors suitable for global search. By incorporating combined Pareto procedures, CPMDE is able to adaptively balance exploitation of non-dominated solutions found with exploration of the search space. Thus, it is able to escape all local optima and converge to the global Pareto-optimal front. The performance of CPMDE was compared with 14 state-of-the-art evolutionary multi-objective optimisation algorithms. A total of ten test problems and three real world problems were considered in the benchmark of the algorithm. Findings suggest that the new algorithm presents an improvement in convergence to global Pareto-optimal fronts especially on deceptive multi-modal functions where CPMDE clearly outperformed all other algorithms in convergence and diversity. The convergence metric on this problem was several orders of magnitude better than those of the other algorithms. Competitive results obtained from the benchmark of CPMDE suggest that it is a good alternative for solving real multi-objective optimisation problems. Also, values of a variance statistics further indicate that CPMDE is reliable and stable in finding solutions and converging to Pareto-optimal fronts in multi-objective optimisation problems. CPMDE was applied to resolve water allocation problems in the Orange River catchment in South Africa. Results obtained from the applications of CPMDE suggest it represents an improvement over some existing methods. CPMDE was applied to resolve water allocation problems in the agricultural and power sectors in South Africa. These sectors are strategic in forging economic growth, sustaining technological developments and contributing further to the overall development of the nation. They are also germane in capacitating the South African government’s commitment towards equity and poverty eradication and ensuring food security. Harnessing more hydropower from existing water sources within the frontier of the country is germane in capacitating the South African Government’s commitment to reduction of the countries’ greenhouse gas emissions and transition to a low-carbon economy while meeting a national target of 3 725 megawatts by 2030. Application of CPMDE algorithm in the behavioural analysis of the Vanderkloof reservoir showed an increase of 20 310 MWH in energy generation corresponding to a 3.2 percent increase. On analysis of storage trajectories over the operating period, it was found that the real time analysis incorporating a hybrid between CPMDE and ANN offers a procedure with a high ability to minimize deviation from target storage under the prevailing water stress condition. Overall, the real time analysis provides an improvement of 49.32 percent over the current practice. Further analysis involving starting the simulation with a proposed higher storage volume suggests that 728.53 GWH of annual energy may be generated from the reservoir under medium flow condition without system failure as opposed to 629 GWH produced from current practice. This corresponds to a 13.66 percent increase in energy generation. It was however noted that the water resources of the dam is not in excess. The water in the dam is just enough to meet all current demands. This calls for proper management policies for future operation of the reservoir to guard against excessive storage depletions. The study herein also involved the development of a decision support system for the daily operation of the Vanderkloof reservoir. This provides a low cost solution methodology suitable for the sustainable operation of the Vanderkloof dam in South Africa. Adopting real time optimisation strategies may be beneficial to the operation of reservoirs. Findings from the study herein indicate that the new algorithm represents an improvement over existing methods. Therefore, CPMDE presents a new tool that nations can adapt for the proper management of water resources towards the overall prosperity of their populace.
D
Singh, Vidya Bhushan. "User Modeling and Optimization for Environmental Planning System Design." Thesis, 2014. http://hdl.handle.net/1805/6114.
Full textEnvironmental planning is very cumbersome work for environmentalists, government agencies like USDA and NRCS, and farmers. There are a number of conflicts and issues involved in such a decision making process. This research is based on the work to provide a common platform for environmental planning called WRESTORE (Watershed Restoration using Spatio-Temporal Optimization of Resources). We have designed a system that can be used to provide the best management practices for environmental planning. A distributed system was designed to combine high performance computing power of clusters/supercomputers in running various environmental model simulations. The system is designed to be a multi-user system just like a multi-user operating system. A number of stakeholders can log-on and run environmental model simulations simultaneously, seamlessly collaborate, and make collective judgments by visualizing their landscapes. In the research, we identified challenges in running such a system and proposed various solutions. One challenge was the lack of fast optimization algorithm. In our research, several algorithms are utilized such as Genetic Algorithm (GA) and Learning Automaton (LA). However, the criticism is that LA has a slow rate of convergence and that both LA and GA have the problem of getting stuck in local optima. We tried to solve the multi-objective problems using LA in batch mode to make the learning faster and accurate. The problems where the evaluation of the fitness functions for optimization is a bottleneck, like running environmental model simulation, evaluation of a number of such models in parallel can give considerable speed-up. In the multi-objective LA, different weight pair solutions were evaluated independently. We created their parallel versions to make them practically faster in computation. Additionally, we extended the parallelism concept with the batch mode learning. Another challenge we faced was in User Modeling. There are a number of User Modeling techniques available. Selection of the best user modeling technique is a hard problem. In this research, we modeled user's preferences and search criteria using an ANN (Artificial Neural Network). Training an ANN with limited data is not always feasible. There are many situations where a simple modeling technique works better if the learning data set is small. We formulated ways to fine tune the ANN in case of limited data and also introduced the concept of Deep Learning in User Modeling for environmental planning system.