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 19 of 19 for “"Explicit methods"”.
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Implicit-explicit methods for time-dependent PDE’s
Various methods have been proposed to integrate dynamical systems arising from spatially discretized time-dependent partial differential equations. For problems with terms of different types, implicit-explicit (IMEX) schemes have been used, especially in conjunction with spectral methods. For …
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A development of explicit methods in technological forecasting
Thesis (M.S.)--Massachusetts Institute of Technology, School of Industrial Management, 1959.
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The Application of Improved Numerical Techniques to 1-D Micellar/Polymer Flooding Simulation
… ODE in-tegrators were used. Two of them are explicit methods while the other two are implicit methods. Although the implicit methods did not work as well as the explicit methods, there may be some improve-ment possible. With respect to the computation time, one of the explicit methods which …
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Estimating population density and survival of ocelots in six study sites over multiple years in Belize, Central America
… trap nights. I used classical and spatially explicit methods, including multi-session robust design, to estimate and compare ocelot density and survival across sites and time. Full likelihood single session models estimated densities ranging from 6.4 - 22.5 individuals/100km2 in the broadleaf …
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Exponential Integrators for the Incompressible Navier-Stokes Equations
… time integration (KBEI). These time integration methods provide a high order accurate, stable approach with many of the advantages of explicit methods, and can reduce the computational resources over conventional methods. The method is scalable in the sense that the computational costs grow …
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Variationally consistent methods for Lagrangian dynamics in continuum mechanics
… lead to large distortions in the mesh. Explicit numerical methods are considered to be efficient in these cases where large meshes and small time-steps are employed for spatial and temporal resolution. However, incompressible and nearly incompressible materials pose a problem as the …
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Activation, Automacity, and Mental Health Implications of Colonial Mentality
… automatically, introspection-dependent and explicit methods of investigating the construct may be limited. Thus, using indirect and implicit methodologies, three studies were conducted to test CM theory: Study 1 attempted to activate and capture the existence of a CM-consistent cultural …
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Reliability of copper interconnects in integrated circuits
… increased, compared to previous tools based on explicit methods (Forward Euler method).
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Positivity preserving solutions of partial integro-differential equations
… in chemical engineering. While solution methods for many of these types of problems are well-established, there is growing class of problems that lack standard solution methods: partial integro-differential equations. The primary challenges in solving these problems are due to several …
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Canonical integration methods for Hamiltonian dynamical systems
… special numerical integrators, namely canonical methods. Recent research in this aspect have shown that canonical numerical integrators may be needed for Hamiltonian systems. In this thesis, we explore possibilities for the construction of integrators that preserve the property of being …
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Adaptive Numerical Methods for Large Scale Simulations and Data Assimilation
… efficiency. Adaptive numerical discretization methods can accommodate problems with various physical, scale, and dynamic features by adjusting the resolution, order, and the type of method used to solve them. In applications that simulate real systems, the numerical accuracy of the solution is …
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Multimethods for the Efficient Solution of Multiscale Differential Equations
… Advances in computing hardware and numerical methods have allowed these models to become larger and more sophisticated. Increasingly, problems can be described as multiphysics and multiscale as they combine several different physical processes with different characteristics. If just one part …
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Science Guided Machine Learning: Incorporating Scientific Domain Knowledge for Learning Under Data Paucity and Noisy Contexts
… learning pipeline using different implicit and explicit methods (termed: science-guided machine learning (SGML)). All the novel techniques proposed in this report have been presented in the context of developing SGML to model fluid dynamics applications, but can be easily generalized to other …
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Teachers of students who are deaf and hard-of-hearing: Change in reading instruction through collaborative professional development
… qualitative and quantitative data collection methods. Analysis of the data showed that two of the teachers grew substantially in their knowledge of the structure of language. While the third teacher did not improve on the knowledge assessment, growth in knowledge was apparent from her …
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Risk management practices in global manufacturing investment
… the adoption of complex financial risk analysis methods in industrial investment projects. The approach adopted in this research was to undertake detailed case investigations in a cross section of industrial businesses at different levels of maturity in order to observe current practices, …
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Generalized finite element methods for multiscale structural dynamics and wave propagation
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01
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Fast time- and frequency-domain finite-element methods for electromagnetic analysis
… In addition, among existing time-domain methods, explicit methods can avoid solving a matrix equation. However, their time step is traditionally restricted by the space step for ensuring the stability of a time-domain simulation. Therefore, making explicit time-domain methods …
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"A compelling voice": a qualitative study of the construction and mobilisation of lived experience evidence and expertise in health technology assessment in Scotland
… (HTA), a multidisciplinary process that employs explicit methods to determine the value of a medicine or other health technology (such as a device or test). There are two bodies responsible for HTA in Scotland, the Scottish Medicines Consortium (SMC) and the Scottish Health Technologies Group …
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Αριθμητική επίλυση συνήθων διαφορικών εξισώσεων με περιοδική λύση
… which presents a periodical behaviour. Numerical methods for the numerical solution of the above general problem are being expounded. At first, a sixth order exponentially fitting method, which requires the a priori knowledge of the frequency of the problem, is being expounded. In the same …