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Hydrological Modeling of Tributaries of Cantareira System, Southeast Brazil, with the Swat Model REA
Pontes,Lucas M.; Viola,Marcelo R.; Silva,Marx L. Naves; Bispo,Diêgo F. A.; Curi,Nilton.
ABSTRACT The lack of hydrological data in Brazil is the main limitation for structuring hydrological models, which are able to assist water resources management. Therefore, studies are needed to evaluate the performance of models without on-site calibration. Within this context, the aim of this study was to calibrate the SWAT hydrological model for the Camanducaia River Basin and to evaluate the performance of this calibration in a contiguous drainage basin, one of the Jaguarí River. For the calibration and validation steps, the SWAT-CUP program was utilized. Uncertainty analysis and calculation of efficiency indexes were carried out through the SUFI-2 algorithm. The SWAT adjustment in the Camanducaia River Basin obtained adequate results, with a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Calibration; Model transfer; Uncertainty analysis; Water security.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000601037
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UNCERTAINTY ANALYSIS OF A WEB-BASED DATA ACQUISITION SYSTEM FOR POULTRY MANAGEMENT WITH SENSOR NETWORKS REA
Yu,Ligen; Teng,Guanghui; Riskowski,Gerald L.; Xu,Xuzhang; Guo,Wenzhong.
ABSTRACT This paper presents a web-based data acquisition system developed by the LabVIEW software program for environment monitoring for poultry management. The measurement error and uncertainty analysis should be conducted accurately to maximize the reliability of this system. An algorithm was proposed for the uncertainty analysis to estimate the sensor networks, with the calibration and validation processes fulfilling the standards of the Guide to the Expression of Uncertainty in Measurement. For the different environmental sensors, the values of the uncertainties were calculated by the methods of type A and B evaluation through a case study. Environmental parameters including air temperature, relative humidity, and CO2 concentration of a compartment...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Uncertainty analysis; Sensor networks; Data acquisition; Measurement; Poultry management.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000600857
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Tidal Energy Round Robin Tests: A Comparison of Flow Measurements and Turbine Loading ArchiMer
Martinez, Rodrigo; Gaurier, Benoit; Ordonez-sanchez, Stephanie; Facq, Jean-valery; Germain, Gregory; Johnstone, Cameron; Santic, Ivan; Salvatore, Francesco; Davey, Thomas; Old, Chris; Sellar, Brian G..
A Round Robin Tests program is being undertaken within the EC MaRINET2 initiative. This programme studies the used facility influence can have on the performance evaluation of a horizontal axis tidal turbine prototype when it is operated under wave and current conditions. In this paper, we present the design of experiments that is used throughout the work programme and the results related to the flow characterisation obtained at the Ifremer wave and current circulating tank, the Cnr-Inm wave towing tank and the ocean research facility FloWave. These facilities have been identified to provide adequate geometric conditions to accommodate a 0.724 m diameter turbine operating at flow velocities of 0.8 and 1.0 m/s. The set-up is replicated in each of the...
Tipo: Text Palavras-chave: Marine energy; Wave and current interactions; Round Robin tests; Flow measurements; Horizontal axis tidal turbine; Uncertainty analysis.
Ano: 2021 URL: https://archimer.ifremer.fr/doc/00689/80090/83144.pdf
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Combining sensitivity and uncertainty analysis to evaluate the impact of management measures with ISIS-Fish: marine protected areas for the Bay of Biscay anchovy (Engraulis encrasicolus) fishery ArchiMer
Lehuta, Sigrid; Mahevas, Stephanie; Petitgas, Pierre; Pelletier, Dominique.
Spatio-seasonal explicit simulation models can predict the impact of spatial management measures on marine fish populations and fishing activities. As fisheries are complex systems, fisheries simulation models are often complex, with many uncertain parameters. Here, the methodology is provided to deliver fishery diagnostics within an uncertainty context using a complex simulation tool. A sensitivity analysis of the model is performed on model outputs using partial least-squares to identify the most sensitive parameters. The impact of several management measures is then simulated using a statistical simulation design taking into account the uncertainty of the selected sensitive parameters. This approach was applied to the Bay of Biscay anchovy stock using...
Tipo: Text Palavras-chave: Bay of Biscay anchovy; Marine protected area; Sensitivity analysis; Simulation; Uncertainty analysis.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00011/12234/9281.pdf
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THE IMPACTS OF CLIMATE CHANGE ON STREAM FLOW IN THE UPPER MISSISSIPPI RIVER BASIN: A REGIONAL CLIMATE MODEL PERSPECTIVE AgEcon
Jha, Manoj K.; Pan, Zaitao; Takle, Eugene S.; Gu, Roy.
We evaluate the impact of climate change on stream flow in the Upper Mississippi River Basin (UMRB) by using a regional climate model (RCM) coupled with a hydrologic model, the Soil and Water Assessment Tool (SWAT). The SWAT model was calibrated and validated against measured stream flow data using observed weather data and inputs from the Environmental Protection Agency's BASINS (Better Assessment Science Integrating Point and Nonpoint Sources) geographical information/database system. The combined performance of the SWAT and RCM was examined using observed weather data as a lateral boundary condition in the RCM. The SWAT and RCM were found to perform well, especially on an annual basis. The potential impacts of climate change on water yield and other...
Tipo: Working or Discussion Paper Palavras-chave: Climate change; Hydrological modeling; RCM; SWAT; Uncertainty analysis; Upper Mississippi River Basin; Environmental Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/18403
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Probabilistic tools for assessment of pest resistance risk associated to insecticidal transgenic crops Scientia Agricola
Maia,Aline de Holanda Nunes; Dourado Neto,Durval.
One of the main risks associated to transgenic crops expressing Bacillus thuringiensis (Bt) toxins is the evolution of pest resistance. The adoption of Bt crops requires environmental risk assessment that includes resistance risk estimation, useful for definition of resistance management strategies aiming to delay resistance evolution. In this context, resistance risk is defined as the probability of the Bt toxin resistance allele frequency (RFreq) exceeding a critical value (CriticalFreq). Mathematical simulation models have been used to estimate (RFreq) over pest generations. In 1998, Caprio developed a deterministic simulation model with few parameters that can be used to obtain RFreq point estimates from point information about model parameters and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacillus thuringiensis; Bt crops; Modeling; Uncertainty analysis.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000500003
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