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 20 of 35 for “"Implicit-Explicit"”.
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Implicit-explicit methods for time-dependent PDE’s
… For problems with terms of different types, implicit-explicit (IMEX) schemes have been used, especially in conjunction with spectral methods. For convection-diffusion problems, for example, one would use an explicit scheme for the convection term and an implicit scheme for thediffusion term. …
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Making "implicit" explicit--toward an account of implicit linguistic knowledge
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Linguistics and Philosophy, 1991.
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Implementation of an implicit-explicit scheme for hybridizable discontinuous Galerkin
… is whether time integration should be performed implicitly or explicitly. Both approaches have their advantages but, for some problems, a combination of these methods is a better choice than either on their own. Thus, an implicit-explicit (IMEX) scheme that splits the computational domain into …
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Efficient Formulation of the Modified Nodal Integral Method and Development of Implicit, Explicit, and Multigrid Schemes Applied to the Two-Dimensional Burgers' Equation
Made available in DSpace on 2017-07-06T18:59:25Z (GMT). No. of bitstreams: 3 Wescott_Bradley_L_MS.pdf: 37261682 bytes, checksum: 07a50e858d2c887376e024b00579ea4e (MD5) Wescott_Bradley_L_MS_ABS.pdf: 705169 bytes, checksum: e042a4f022fb6236e683141b34fd34c1 (MD5) license.txt: 4813 bytes, checksum: …
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Análise dinâmica não-linear de sistemas rígido-flexíveis
… problems is advantageous to treat each region by implicit or explicit algorithms implemented in the same computational program. The objective of the present work is to study a mixed time integration algorithm applied to non-linear problems. The explicit integration is obtained by the Central …
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ITSICALL: investigating teaching strategies in computer assisted language learning
… English speakers of various teaching strategies Implicit, Explicit and Exploratory, implemented as a CALL program, 'Itsicall' (Investigating Teaching Strategies in Computer Assisted Language Learning). It is an original piece of research with school children in London which uses a variety of L2 …
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Cognitive effort in contextual interference and implicit motor learning
… accounts of contextual interference and implicit motor learning from the perspective of cognitive effort. Three key outcomes have emerged. First, from a theoretical perspective, the thesis offers a previously unexplored account for the contextual interference effect – one that potentially …
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Development of stable operator splitting numerical algorithms for phase-field modeling and surface diffusion applications
Implicit, explicit and spectral algorithms were used to create Allen-Cahn and Cahn-Hilliard phase field models. Individual terms of the conservation equations were approached by different methods using operator splitting techniques found in previous literature. In addition, dewetting of gold films …
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Efficient Multiphysics Coupling for Fast Burst Reactors in Slab Geometry
… algorithm of diffusion neutronics and linear. An implicit-explicit (IMEX) algorithm was used to follow the dynamical time-scale of the problem. However, as noted by him and his co-authors, the diffusion model does not adequately represent the neutronics of the system due to its small. Our …
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Polynomial-Based Methods for Time-Integration
… order conditions and easily construct a range of implicit or explicit integrators with properties such as parallelism and high-order of accuracy. The breadth of our framework is made possible by combining ideas from complex analysis, approximation theory, and general linear methods. In this work, …
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The Effect of Age-Related Stereotypes on Memory Self-Efficacy and Memory Task-Performance of Older Adults
… of memory self-efficacy, four measures of implicit, explicit, and working memory, and two measures of implicit and explicit sequential learning. Structural equation modeling was used to analyze the relationships among stereotypes of age, memory self-efficacy, and subsequent performance on …
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Hybrid explicit-implicit FDTD-FEM time-domain solver for electromagnetic problems
… the stability of algorithm is proposed. Both explicit and implicit time-stepping schemes were treated in the framework of the developed method. An improved version of the implicit-explicit FEM-FDTD hybrid method was developed. The new method minimizes reflection from the interface between …
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Towards an implicit measure of religiousness-spirituality.
… associations between a newly-developed implicit measure of religiousness-spirituality, well-validated explicit measures and pro-social behavior. In Study 1, undergraduates (n = 109) at a private institution completed self-report measures of a broad spectrum of religiousness-spirituality …
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Transient nonlinear heat transfer using finite elements
… Temporal discretisation is obtained through an implicit/explicit difference scheme. The material properties are allowed to be temperature dependent, and consequently a modified Newton-Raphson iterative scheme is employed to solve the equations. The fully discretised equations are solved by …
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An iterative pressure-correction method for the unsteady incompressible Navier-Stokes Equation
… the Stokes and Navier-Stokes equations, using Implicit-Explicit Backwards Difference Formula and Runge-Kutta time integration solvers. The test cases comprises a now classical manufactured solution in the projection method literature and a modified version of a more recently proposed …
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Exploring the Effects of Conversational Repair as a Scaffolding Strategy to Promote Mathematics Explanations of Students with Learning Disabilities
… the different repair request techniques in the implicit-explicit continuum to elicit repair of self-explanation from students with LD. Using a multiple-baseline-across-participants design, the study found that the intervention was effective for improving the students' problem solving and …
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Adaptive Numerical Methods for Large Scale Simulations and Data Assimilation
… We develop and investigate novel multirate and implicit-explicit methods that are appropriate for multiscale and multiphysics numerical discretizations. We construct and explore data assimilation approaches for, but not restricted to, atmospheric chemistry applications. A generic approach for …
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Multimethods for the Efficient Solution of Multiscale Differential Equations
… and to address these issues. First, new implicit multirate Runge–Kutta methods are analyzed with a special focus on stability. This is extended into implicit multirate infinitesimal methods. We introduce approaches for constructing implicit-explicit methods based on Runge–Kutta and …
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The Effect of Oral Reading Fluency on Analysis Skills
… miscues were noted. This was followed by 8 text implicit- explicit questions. Students were given a second passage to read; however, with the second passage the students were permitted to practice reading it 3 times prior to their assessment.</p> <p>All students showed an increase in the number …
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The 'I'-tag theory of perception, memory and consciousness.
The distinction between explicit and implicit psychological performance is held to arise as a consequence of differences in self-related processing. In the former, outputs from sensory and memory activity gain ready access to a model of self, referred to here as 'I'. Implicit performance comes …
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