Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"growth simulation"”.
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Análise da propagação de trincas em estruturas metálicas predominantemente axissimétricas
… work is to realize an Evaluation of the Crack-Growth of Quasi-Axisymmetric Steel Structures by the FEM. Axisymmetric shell finite elements are used in the axisymmetric regions of the structure and 3-D shell elements in the regions where geometric deviations are found. The interface between …
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Designing Massive 3-Dimensional Neural Networks with Chromosomal-Based Simulated Development
… The neural networks were designed by a cell growth simulation program that decoded the structural and functional information on the chromosome. The cell growth simulation program is capable of producing patterns of differentiation unique for any slight variations in the genetic parameters. …
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The economic and environmental implications of feedlot manure utilization in the Texas High Plains
… Impact Calculator (EPIC) biological crop/growth simulation model.
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Mixed-Mode Crack Propagation in Functionally Graded Materials
… non-proportional loadings. Each step of crack growth simulation consists of calculation of mixed-mode SIFs, determination of crack growth based on fracture criteria, and local automatic remeshing along the crack path. The present approach requires a user-defined crack increment at the beginning …
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Growth Models and Mortality Functions for Unthinned and Thinned Loblolly Pine Plantations
Effects of thinning, such as increased diameter growth and decreased mortality in the residual stand, have been recognized by foresters for many years. These effects are largely the result of increased tree vigor which is induced by a decreased level of competition. These relationships are …
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Diameter and height increment and mortality functions for loblolly pine trees in thinned and unthinned plantations
… as to the benefits of individual tree growth and yield prediction models over stand-level models, individual tree models still have wide acceptance. A generalized thinning response variable which can account for the intensity of thinning, as well as the age of the stand at the time of …
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Reducing Corn Yield Variability and Enhancing Yield Increases Through the Use of Corn-Specific Growth Models
Crop simulation models (CSMs) are used to evaluate management and environmental scenarios on crop growth and yields. Two corn (Zea Mays L.) crop growth simulation models, Hybrid-Maize, and CERES-Maize were calibrated and validated under Virginia conditions with the goal of better understanding corn …
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Financial costs and economic tradeoffs of alternative manure management policies on dairy and dairy/poultry farms in Rockingham County, Virginia
… nutrient losses estimated by EPIC, a soil/plant growth simulation model, indicate the highest nitrogen losses on grass hay and pasture and the highest phosphorus losses on no-till com. The highest nutrient applications and nutrient losses occur on the 60 and 100-cow dairy/poultry farms. INCORP is …
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Towards effective use of climate forecasts in agricultural decision making: Bridging the gap between modeling and empirical studies
… valuation framework that integrates a crop growth simulation model and an economic decision-making model. Focusing on the 2012 drought in U.S. Midwest, it is shown that crop insurance and crop price could significantly reduce the value of improved seasonal forecasts during drought …
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Investigation of climate variability and climate change impacts on corn yield in the Eastern Corn Belt, USA
… Therefore, correct representation of corn growth and yield projection under various climate conditions (limited or oversupplied water) is essential for quantifying the relative benefits of alternative biofuel crops.</p> <p>The main objective of this study is to improve the evaluation of …
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Climate Change and Virtual Water: Implications for UK Food Security
… crops. Due to the crucial role of water in crop growth and yield formation, prolonged or severe soil water deficits in crop producing areas can result in substantial yield penalties. The potential of food trade to help address food insecurity as a result of insufficient water availability for …
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Modelle der Nutzungsplanung auf der Basis von Wiederholungsinventuren
… einer Wiederholungsaufnahme liefert stabile Simulationsergebnisse über vier Jahrzehnte.
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Microstructure evolution and interconnect realiability
… (EM) induced interconnect failure, normal grain growth in thin films was studied, analytic models were built for the grain structure statistics in 2D and 3D interconnects, and simulation programs were developed for generation of process and complex-geometry-sensitive interconnect structures. The …
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Refined theories and Discontinuous Galerkin methods for the analysis of multilayered composite structures
… without incurring in critical failure. The crack-growth simulation is a challenging task for the finite element method because it involves domain's separation and stress singularities at the crack tip. It is therefore necessary to introduce methods that account for crack-tip singularities and that …
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Effect of bioenergy crops and fast growing trees on hydrology and water quality in the Little Vermilion River Watershed
… and hydrologic and water quality responses to growth is important should it be widely planted in the Midwestern U.S. Subsurface tile drainage systems enable the Midwest area to become highly productive agricultural lands, but also create environmental problems like nitrate-N contamination of …
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Dynamic system modeling and decision support for grow-finish swine barn operation
Understanding both swine growth performance and swine barn management under different conditions is essential to evaluate the swine production system. The integrated effect of swine growth and swine barn management is difficult to investigate because of their complex relationships. To estimate the …
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The potential implications of bioenergy crop production for water and energy balance and carbon and nitrogen dynamics in the United States
… investigate the impacts of large-scale growth of bioenergy crops on water and energy balance and coupled carbon and nitrogen dynamics in the US. To achieve this objective, I apply and extend a coupled biogeochemical and biogeophysical model, the Integrated Science Assessment Model …