subject:(Adaptive Method)

Rice University

1. Zou, Keguan. Study of Adaptive Passive Stiffness Systems with Nonlinear Vibrations: New Analytical and Computational Techniques.

Degree: PhD, Engineering, 2014, Rice University

URL: http://hdl.handle.net/1911/88417

► A new class of adaptive passive stiffness systems undergoing nonlinear oscillations are proposed and studied in this Ph.D. thesis. Adaptive passive stiffness systems that have… (more)

▼ A new class of adaptive passive stiffness systems undergoing nonlinear oscillations are proposed and studied in this Ph.D. thesis. Adaptive passive stiffness systems that have been proposed in this thesis and by other researchers recently allow for new ways of vibration isolation, seismic protection, and tuned mass damping of vibrations. New characteristics which emerge in these adaptive passive stiffness systems, like the coexistence of negative stiffness and positive stiffness, pose the need of analytical methods for studying these systems. Existing analytical and computational techniques that permit such a study are explored and new techniques are developed. A new analytical technique called the multi-frequency homotopy analysis method is proposed to this end. This multi-frequency homotopy analysis method can not only be adopted to solve a wide variety of nonlinear problems with periodic and quasi-periodic steadystate solutions, but can also be utilized to obtain analytical expressions of nonlinear dynamic systems’ transient response. These abilities of the multi-frequency homotopy analysis method make it a powerful tool for studying the new adaptive passive stiffness systems. Besides, the pseudo-force method is adapted to analytically solve a nonlinear system involving negative stiffness. Other analytical and numerical methods like the modified Lindstedt–Poincar´e method, the event-driven simulation technique and the time stepping method are also explored for analyzing such adaptive passive stiffness systems. In this Ph.D. study, a new adaptive passive stiffness device called universal stiffness devices (USD) is proposed. The newly proposed USD can generate a wide range of smooth and piecewise smooth restoring forces with positive as well as negative stiffnesses. The stiffness of the USD can be changed smoothly and continuously by simply adjusting a physical parameter of the USD. The variability of the USD’s stiffness can provide retuning capability of vibration isolation systems and other control systems with such a USD. The proposed USD can serve as a core element in a vibration isolation system to adaptively attenuate the vibration transmitted to the primary structure. Moreover, as an adaptive passive device, the USD brings better adaptability than a purely passive system. An analytical model of the USD has been established and experimental study has been conducted. The force–displacement loops of the USD are measured and compared to the results computed by using the newly formulated analytical model. The USD’s capability of changing its stiffness as it is designed has been tested. The performance of a vibration isolation system with the proposed USD has been verified experimentally under a range of harmonic excitations that cover dominant vibration frequencies and amplitudes. For future research, further application of the proposed analytical method for investigating nonlinear vibration isolation systems of different types could be expected; more practical applications of the proposed USD in vibration control… Advisors/Committee Members: Nagarajaiah, Satish (advisor), Padgett, Jamie E. (committee member), Dick, Andrew J. (committee member).

Subjects/Keywords: Adaptive passive stiffness device; analytical method

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APA (6^th Edition):

Zou, K. (2014). Study of Adaptive Passive Stiffness Systems with Nonlinear Vibrations: New Analytical and Computational Techniques. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/88417

Chicago Manual of Style (16^th Edition):

Zou, Keguan. “Study of Adaptive Passive Stiffness Systems with Nonlinear Vibrations: New Analytical and Computational Techniques.” 2014. Doctoral Dissertation, Rice University. Accessed March 03, 2021. http://hdl.handle.net/1911/88417.

MLA Handbook (7^th Edition):

Zou, Keguan. “Study of Adaptive Passive Stiffness Systems with Nonlinear Vibrations: New Analytical and Computational Techniques.” 2014. Web. 03 Mar 2021.

Vancouver:

Zou K. Study of Adaptive Passive Stiffness Systems with Nonlinear Vibrations: New Analytical and Computational Techniques. [Internet] [Doctoral dissertation]. Rice University; 2014. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1911/88417.

Council of Science Editors:

Zou K. Study of Adaptive Passive Stiffness Systems with Nonlinear Vibrations: New Analytical and Computational Techniques. [Doctoral Dissertation]. Rice University; 2014. Available from: http://hdl.handle.net/1911/88417

University of Southern Mississippi

2. Dong, Yichuan. Adaptive Method of Approximate Particular Solution for One-Dimensional Differential Equations.

Degree: MS, Mathematics, 2014, University of Southern Mississippi

URL: https://aquila.usm.edu/masters_theses/9

► An adaptive algorithm for the Method Approximate Particular Solution (MAPS) using radial basis functions for solving boundary value problems is discussed in this work.… (more)

Subjects/Keywords: Adaptive Method; MAPS; Boundary Value Problem; Adaptive MAPS

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APA (6^th Edition):

Dong, Y. (2014). Adaptive Method of Approximate Particular Solution for One-Dimensional Differential Equations. (Masters Thesis). University of Southern Mississippi. Retrieved from https://aquila.usm.edu/masters_theses/9

Chicago Manual of Style (16^th Edition):

Dong, Yichuan. “Adaptive Method of Approximate Particular Solution for One-Dimensional Differential Equations.” 2014. Masters Thesis, University of Southern Mississippi. Accessed March 03, 2021. https://aquila.usm.edu/masters_theses/9.

MLA Handbook (7^th Edition):

Dong, Yichuan. “Adaptive Method of Approximate Particular Solution for One-Dimensional Differential Equations.” 2014. Web. 03 Mar 2021.

Vancouver:

Dong Y. Adaptive Method of Approximate Particular Solution for One-Dimensional Differential Equations. [Internet] [Masters thesis]. University of Southern Mississippi; 2014. [cited 2021 Mar 03]. Available from: https://aquila.usm.edu/masters_theses/9.

Council of Science Editors:

Dong Y. Adaptive Method of Approximate Particular Solution for One-Dimensional Differential Equations. [Masters Thesis]. University of Southern Mississippi; 2014. Available from: https://aquila.usm.edu/masters_theses/9

University of Windsor

3. Sun, Weiwei. Adaptive boundary element method.

Degree: PhD, Mathematics and Statistics, 1991, University of Windsor

URL: https://scholar.uwindsor.ca/etd/6150

Subjects/Keywords: ADAPTIVE; ADAPTIVE BOUNDARY ELEMENT METHOD; Adaptive boundary element method; BOUNDARY; ELEMENT; METHOD

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APA (6^th Edition):

Sun, W. (1991). Adaptive boundary element method. (Doctoral Dissertation). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/6150

Chicago Manual of Style (16^th Edition):

Sun, Weiwei. “Adaptive boundary element method.” 1991. Doctoral Dissertation, University of Windsor. Accessed March 03, 2021. https://scholar.uwindsor.ca/etd/6150.

MLA Handbook (7^th Edition):

Sun, Weiwei. “Adaptive boundary element method.” 1991. Web. 03 Mar 2021.

Vancouver:

Sun W. Adaptive boundary element method. [Internet] [Doctoral dissertation]. University of Windsor; 1991. [cited 2021 Mar 03]. Available from: https://scholar.uwindsor.ca/etd/6150.

Council of Science Editors:

Sun W. Adaptive boundary element method. [Doctoral Dissertation]. University of Windsor; 1991. Available from: https://scholar.uwindsor.ca/etd/6150

Queensland University of Technology

4. Sarkar, Samrat. Blur adaptation with source and observer methods.

Degree: 2017, Queensland University of Technology

URL: https://eprints.qut.edu.au/103277/

► Blur adaptation is the improvement of visual and perceptual performance with time following viewing of a blurred target. It is possible to generate blurred images… (more)

Subjects/Keywords: Adaptive optics; Blur adaptation; Defocus; Higher order aberrations; Observer method; Source method; Visual acuity

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APA (6^th Edition):

Sarkar, S. (2017). Blur adaptation with source and observer methods. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/103277/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sarkar, Samrat. “Blur adaptation with source and observer methods.” 2017. Thesis, Queensland University of Technology. Accessed March 03, 2021. https://eprints.qut.edu.au/103277/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sarkar, Samrat. “Blur adaptation with source and observer methods.” 2017. Web. 03 Mar 2021.

Vancouver:

Sarkar S. Blur adaptation with source and observer methods. [Internet] [Thesis]. Queensland University of Technology; 2017. [cited 2021 Mar 03]. Available from: https://eprints.qut.edu.au/103277/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sarkar S. Blur adaptation with source and observer methods. [Thesis]. Queensland University of Technology; 2017. Available from: https://eprints.qut.edu.au/103277/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Waterloo

5. Rahman, G M Ashikur. Numerical Simulation of Nonlinear and Dispersive Wave Equations using Adaptive Mesh Refinement (AMR).

Degree: 2020, University of Waterloo

URL: http://hdl.handle.net/10012/16015

► Numerical solution of time dependent Partial Differential Equations plays an important role in different fluid flow modelling problems. Sometimes a little portion of the computational… (more)

▼ Numerical solution of time dependent Partial Differential Equations plays an important role in different fluid flow modelling problems. Sometimes a little portion of the computational domain needs high grid resolution in order to resolve phenomena such as steep fronts or shocks while use of a very high resolution mesh for the whole computational domain is a waste of computational resources since they are not required all over the domain. An Adaptive Mesh Refinement (AMR) procedure is an efficient and practical method for the numerical solution of Partial Differential Equation problems with regions of large gradients occupying a small subregion of the domain. An AMR algorithm refines grids by placing finer and finer subgrids in the different portions of the computational domain where they are required. For the time dependent problem the refinement is dynamic since the regions requiring refinement change with time and the AMR algorithm adaptively changes that. In this thesis we developed an AMR code for the numerical solution of linear, nonlinear and dispersive wave equations inspired by existing algorithms in the literature. In this work we kept the implementation simple and we use simple refinement criteria although the code allows for the use of more complex refinement criteria. In addition the implementation of the data structure was also kept simple. We have done the refinement in both time and space. In our code we generate finer grids which can also have finer grids using a recursive grid generation procedure. We give a review of some existing work along with the necessary components of our work. Numerical simulations of the linear advection equation, Burger's equation and the Regularized Long Wave (RLW) equation have been run with our AMR code. The results of these simulations are shown to have good agreement with numerical solutions obtained on fine resolution single grids which signify the success of our code. A significant time reduction in all the numerical simulations suggests the good performance of our code.

Subjects/Keywords: partial differential equation; finite volume method; finite difference method; adaptive mesh refinement

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APA (6^th Edition):

Rahman, G. M. A. (2020). Numerical Simulation of Nonlinear and Dispersive Wave Equations using Adaptive Mesh Refinement (AMR). (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/16015

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rahman, G M Ashikur. “Numerical Simulation of Nonlinear and Dispersive Wave Equations using Adaptive Mesh Refinement (AMR).” 2020. Thesis, University of Waterloo. Accessed March 03, 2021. http://hdl.handle.net/10012/16015.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rahman, G M Ashikur. “Numerical Simulation of Nonlinear and Dispersive Wave Equations using Adaptive Mesh Refinement (AMR).” 2020. Web. 03 Mar 2021.

Vancouver:

Rahman GMA. Numerical Simulation of Nonlinear and Dispersive Wave Equations using Adaptive Mesh Refinement (AMR). [Internet] [Thesis]. University of Waterloo; 2020. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/10012/16015.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rahman GMA. Numerical Simulation of Nonlinear and Dispersive Wave Equations using Adaptive Mesh Refinement (AMR). [Thesis]. University of Waterloo; 2020. Available from: http://hdl.handle.net/10012/16015

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

6. Badowski, Tomasz. Das adaptive Importance Sampling durch Minimierung der Schätzer der Kreuzentropie, des mittleren Quadrats, und der Ineffizienz-Konstante.

Degree: 2016, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-5241

► Die Ineffizienz der Verwendung einer erwartungstreuen Schätzfunktion in einer Monte-Carlo-Methode (MC-Methode) kann durch eine Ineffizienz-Konstante quantifiziert werden, die gleich dem Produkt der Varianz der Schätzfunktion… (more)

Subjects/Keywords: adaptive importance sampling; stochastic counterpart method; Monte Carlo method; 500 Naturwissenschaften und Mathematik

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APA (6^th Edition):

Badowski, T. (2016). Das adaptive Importance Sampling durch Minimierung der Schätzer der Kreuzentropie, des mittleren Quadrats, und der Ineffizienz-Konstante. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-5241

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Badowski, Tomasz. “Das adaptive Importance Sampling durch Minimierung der Schätzer der Kreuzentropie, des mittleren Quadrats, und der Ineffizienz-Konstante.” 2016. Thesis, Freie Universität Berlin. Accessed March 03, 2021. http://dx.doi.org/10.17169/refubium-5241.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Badowski, Tomasz. “Das adaptive Importance Sampling durch Minimierung der Schätzer der Kreuzentropie, des mittleren Quadrats, und der Ineffizienz-Konstante.” 2016. Web. 03 Mar 2021.

Vancouver:

Badowski T. Das adaptive Importance Sampling durch Minimierung der Schätzer der Kreuzentropie, des mittleren Quadrats, und der Ineffizienz-Konstante. [Internet] [Thesis]. Freie Universität Berlin; 2016. [cited 2021 Mar 03]. Available from: http://dx.doi.org/10.17169/refubium-5241.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Badowski T. Das adaptive Importance Sampling durch Minimierung der Schätzer der Kreuzentropie, des mittleren Quadrats, und der Ineffizienz-Konstante. [Thesis]. Freie Universität Berlin; 2016. Available from: http://dx.doi.org/10.17169/refubium-5241

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cincinnati

7. Bapat, Milind S. New Developments in Fast Boundary Element Method.

Degree: PhD, Engineering and Applied Science: Mechanical Engineering, 2012, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1331296947

► Boundary element method (BEM) is a numerical technique based on integral equations. BEM has found to be very efficient for boundary value problems where… (more)

▼ Boundary element method (BEM) is a numerical technique based on integral equations. BEM has found to be very efficient for boundary value problems where the domains are infinite or singularities are involved. As a result, the use of BEM has become very popular in areas like acoustics and fracture mechanics. The standard formulation for BEM involves solution to a linear system of equations Ax=b where A is a dense and nonsymmetrical matrix. The computational time is seen to be order O(N²) with iterative solvers. The Fast multipole method (FMM) and Adaptive cross approximation (ACA) methods are two methods that have been developed in recent years to reduce the order of computation to O(N). In this research we investigate the ACA and FMM, and conduct a comparison study between the two. This research discusses the FMM in details. The FMM is a tree based algorithm to do fast matrix vector multiplication. Over the years, a variety of techniques have been developed to make FMM more efficient. Some of these techniques are studied and implemented. The research considers three different types of problems, viz. potential, acoustic and elastostatic problems for the purpose of comparison. A new L2 modification has been introduced in this research. An efficient usage of adaptive tree is also presented. Finally, a composite technique encompassing the existing strategies with the new proposed modifications has been presented as the new adaptive algorithm. An implementation of this technique, coded in FORTRAN, has yielded the capacity of solving very large engineering problems (up to 1 million DOFs) on a desktop PC in small amount of time. Numerical results have been presented which emphasize the efficiency of this new implementation. The second part of this research is to study ACA and compare with FMM. A study of ACA has been done and a modified implementation of the ACA has been proposed. This implementation has enabled one to solve a few large problems (more than a half million DOFs) on a desktop PC. Finally a comparison study has been conducted between the FMM and ACA for simple acoustic problems. It was found that the ACA is much more efficient for solving small to medium sized problems (up to 200,000 DOFs) while the FMM was found to be more efficient for large sized problems (more than 200,000 DOFs). This thesis research has significantly improved the computational efficiencies of both the FMBEM and ACA BEM towards applications of the BEM in solving real engineering problems on desktop PCs. Advisors/Committee Members: Liu, Yijun (Committee Chair).

Subjects/Keywords: Mechanical Engineering; Fast Multipole Method; Boundary Element Method; Adaptive Cross Approximation; Acoustics

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APA (6^th Edition):

Bapat, M. S. (2012). New Developments in Fast Boundary Element Method. (Doctoral Dissertation). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1331296947

Chicago Manual of Style (16^th Edition):

Bapat, Milind S. “New Developments in Fast Boundary Element Method.” 2012. Doctoral Dissertation, University of Cincinnati. Accessed March 03, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1331296947.

MLA Handbook (7^th Edition):

Bapat, Milind S. “New Developments in Fast Boundary Element Method.” 2012. Web. 03 Mar 2021.

Vancouver:

Bapat MS. New Developments in Fast Boundary Element Method. [Internet] [Doctoral dissertation]. University of Cincinnati; 2012. [cited 2021 Mar 03]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1331296947.

Council of Science Editors:

Bapat MS. New Developments in Fast Boundary Element Method. [Doctoral Dissertation]. University of Cincinnati; 2012. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1331296947

Universiteit Utrecht

8. Pouw, R. Adaptive d-dimensional finite difference methods.

Degree: 2014, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/296904

► The finite difference method is a numerical approach to approximate the solution to initial boundary value problems. In my thesis I will endeavour to solve… (more)

Subjects/Keywords: Finite Difference Method; Adaptive; higher-dimensionality; r-refinement

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APA (6^th Edition):

Pouw, R. (2014). Adaptive d-dimensional finite difference methods. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/296904

Chicago Manual of Style (16^th Edition):

Pouw, R. “Adaptive d-dimensional finite difference methods.” 2014. Masters Thesis, Universiteit Utrecht. Accessed March 03, 2021. http://dspace.library.uu.nl:8080/handle/1874/296904.

MLA Handbook (7^th Edition):

Pouw, R. “Adaptive d-dimensional finite difference methods.” 2014. Web. 03 Mar 2021.

Vancouver:

Pouw R. Adaptive d-dimensional finite difference methods. [Internet] [Masters thesis]. Universiteit Utrecht; 2014. [cited 2021 Mar 03]. Available from: http://dspace.library.uu.nl:8080/handle/1874/296904.

Council of Science Editors:

Pouw R. Adaptive d-dimensional finite difference methods. [Masters Thesis]. Universiteit Utrecht; 2014. Available from: http://dspace.library.uu.nl:8080/handle/1874/296904

9. -0284-2733. Adaptive mesh refinement for Multigrid Solver.

Degree: MS, Mathematics, 2016, Texas Tech University

URL: http://hdl.handle.net/2346/72358

► In this work, we introduce the Galerkin finite element Method for Elliptic Problems. The estimates of the approximation error in both energy norm and L²… (more)

Subjects/Keywords: Numerical method; Adaptive refinement.

…TECHNIQUE FOR ADAPTIVE MESH REFINEMENT In Chapter IV, we introduced the method of adaptive mesh… …THE FINITE ELEMENT METHOD FOR ELLIPTIC PROBLEMS In this chapter, we focus on the Elliptic… …Elliptic problem. Galerkin finite element method is used to discretize the Elliptic problems… …Approximation by the Galerkin method In the section, the numerical solution of the elliptic problems… …considered in the previous section is described by the Galerkin method. We suppose that V is an…

11 more images…

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APA (6^th Edition):

-0284-2733. (2016). Adaptive mesh refinement for Multigrid Solver. (Masters Thesis). Texas Tech University. Retrieved from http://hdl.handle.net/2346/72358

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-0284-2733. “Adaptive mesh refinement for Multigrid Solver.” 2016. Masters Thesis, Texas Tech University. Accessed March 03, 2021. http://hdl.handle.net/2346/72358.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-0284-2733. “Adaptive mesh refinement for Multigrid Solver.” 2016. Web. 03 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-0284-2733. Adaptive mesh refinement for Multigrid Solver. [Internet] [Masters thesis]. Texas Tech University; 2016. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/2346/72358.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-0284-2733. Adaptive mesh refinement for Multigrid Solver. [Masters Thesis]. Texas Tech University; 2016. Available from: http://hdl.handle.net/2346/72358

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Manitoba

10. Xue, Lin. Adaptive L1 regularized second-order least squares method for model selection.

Degree: Statistics, 2015, University of Manitoba

URL: http://hdl.handle.net/1993/30757

► The second-order least squares (SLS) method in regression model proposed by Wang (2003, 2004) is based on the first two conditional moments of the response… (more)

Subjects/Keywords: Adaptive LASSO; Second-order least squares method; Variable selection

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APA (6^th Edition):

Xue, L. (2015). Adaptive L1 regularized second-order least squares method for model selection. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/30757

Chicago Manual of Style (16^th Edition):

Xue, Lin. “Adaptive L1 regularized second-order least squares method for model selection.” 2015. Masters Thesis, University of Manitoba. Accessed March 03, 2021. http://hdl.handle.net/1993/30757.

MLA Handbook (7^th Edition):

Xue, Lin. “Adaptive L1 regularized second-order least squares method for model selection.” 2015. Web. 03 Mar 2021.

Vancouver:

Xue L. Adaptive L1 regularized second-order least squares method for model selection. [Internet] [Masters thesis]. University of Manitoba; 2015. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1993/30757.

Council of Science Editors:

Xue L. Adaptive L1 regularized second-order least squares method for model selection. [Masters Thesis]. University of Manitoba; 2015. Available from: http://hdl.handle.net/1993/30757

Delft University of Technology

11. de Wit, Shirley (author). Self-efficacy of Dutch primary school teachers towards programming education.

Degree: 2019, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:f8eafd9b-e58e-47d1-946e-2a684c839b1a

► Only 32% of the Dutch primary schools do something with programming, despite its benefits on students’ skills, job opportunities, understanding of the world, and diversity.… (more)

▼ Only 32% of the Dutch primary schools do something with programming, despite its benefits on students’ skills, job opportunities, understanding of the world, and diversity. Primary school teachers not getting involved with programming education can be caused by a lack of belief in their teaching programming abilities. The belief in your own abilities towards a certain task is referred to as self-efficacy. We hypothesize that Dutch primary school teachers have a low self-efficacy towards programming education (partially) due to the teaching method used in programming education. Programming is often taught via discovery learning while Dutch primary school teachers use teacher-centered methods such as direct instruction more often. The usage of a certain teaching method can also influence the performance of the teacher. When teachers are able to use their existing knowledge and skills, then they have adaptive expertise. This research aims at answering the following question: What is the effect of teaching methods on the self-efficacy of Dutch primary school teachers towards programming education? The research question is answered through a mixed methods study consisting of a questionnaire, as part of a quantitative research, and an experiment, as part of a qualitative research. The questionnaire includes questions about teaching methods, self-efficacy, and demographics. In total 259 teachers participated within the questionnaire. We found that both direct instruction and discovery learning are well known by Dutch primary school teachers. Direct instruction is used by almost all participating teachers in their regular education. However, discovery learning is used by only 53% of the teachers in our sample. We also found that gender, grade, programming experience, and programming teaching experience result in differences in teachers’ self-efficacy towards programming education. Furthermore, teachers who expect to use discover learning in programming lessons have a different self-efficacy than teachers that do not expect this. An experiment is set-up in which ten Dutch primary school teachers give four programming lessons in Scratch while following either a direct instruction or discovery learning approach. Data is gathered on self-efficacy and adaptive expertise. We found that getting involved in programming education, independently of the teaching method, can increase the self-efficacy of teachers. However, the teachers in the discovery learning expressed more negative feelings towards the experience of teaching programming. The usage of discovery learning also seems to bring the risk of a decrease in self-efficacy. We think that adaptive expertise gives us more insights into this decrease. The teachers with a decreased self-efficacy showed higher levels of adaptive expertise. We think that this contributes to them having higher expectations of themselves. When these expectations are not met, a decrease in self-efficacy can occur. The research we have done indicate that the self-efficacy towards programming education of… Advisors/Committee Members: Hermans, Félienne (mentor), Wehrmann, Caroline (mentor), Bruggink, Martin (graduation committee), Brinkman, Willem-Paul (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: programming education; Self-efficacy; adaptive expertise; teaching method; primary school

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APA (6^th Edition):

de Wit, S. (. (2019). Self-efficacy of Dutch primary school teachers towards programming education. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:f8eafd9b-e58e-47d1-946e-2a684c839b1a

Chicago Manual of Style (16^th Edition):

de Wit, Shirley (author). “Self-efficacy of Dutch primary school teachers towards programming education.” 2019. Masters Thesis, Delft University of Technology. Accessed March 03, 2021. http://resolver.tudelft.nl/uuid:f8eafd9b-e58e-47d1-946e-2a684c839b1a.

MLA Handbook (7^th Edition):

de Wit, Shirley (author). “Self-efficacy of Dutch primary school teachers towards programming education.” 2019. Web. 03 Mar 2021.

Vancouver:

de Wit S(. Self-efficacy of Dutch primary school teachers towards programming education. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Mar 03]. Available from: http://resolver.tudelft.nl/uuid:f8eafd9b-e58e-47d1-946e-2a684c839b1a.

Council of Science Editors:

de Wit S(. Self-efficacy of Dutch primary school teachers towards programming education. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:f8eafd9b-e58e-47d1-946e-2a684c839b1a

Louisiana State University

12. Gu, Shiyuan. C0 Interior Penalty Methods for Cahn-Hilliard Equations.

Degree: PhD, Applied Mathematics, 2012, Louisiana State University

URL: etd-06052012-123115 ; https://digitalcommons.lsu.edu/gradschool_dissertations/1744

► In this work we study C0 interior penalty methods for Cahn-Hilliard equations. In Chapter 1 we introduce Cahn-Hilliard equations and the time discretization that leads… (more)

Subjects/Keywords: preconditioner; medius analysis; adaptive mesh refinement; discontinuous Galerkin method

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APA (6^th Edition):

Gu, S. (2012). C0 Interior Penalty Methods for Cahn-Hilliard Equations. (Doctoral Dissertation). Louisiana State University. Retrieved from etd-06052012-123115 ; https://digitalcommons.lsu.edu/gradschool_dissertations/1744

Chicago Manual of Style (16^th Edition):

Gu, Shiyuan. “C0 Interior Penalty Methods for Cahn-Hilliard Equations.” 2012. Doctoral Dissertation, Louisiana State University. Accessed March 03, 2021. etd-06052012-123115 ; https://digitalcommons.lsu.edu/gradschool_dissertations/1744.

MLA Handbook (7^th Edition):

Gu, Shiyuan. “C0 Interior Penalty Methods for Cahn-Hilliard Equations.” 2012. Web. 03 Mar 2021.

Vancouver:

Gu S. C0 Interior Penalty Methods for Cahn-Hilliard Equations. [Internet] [Doctoral dissertation]. Louisiana State University; 2012. [cited 2021 Mar 03]. Available from: etd-06052012-123115 ; https://digitalcommons.lsu.edu/gradschool_dissertations/1744.

Council of Science Editors:

Gu S. C0 Interior Penalty Methods for Cahn-Hilliard Equations. [Doctoral Dissertation]. Louisiana State University; 2012. Available from: etd-06052012-123115 ; https://digitalcommons.lsu.edu/gradschool_dissertations/1744

Virginia Tech

13. Alexe, Mihai. Adjoint-based space-time adaptive solution algorithms for sensitivity analysis and inverse problems.

Degree: PhD, Computer Science, 2011, Virginia Tech

URL: http://hdl.handle.net/10919/37515

► Adaptivity in both space and time has become the norm for solving problems modeled by partial differential equations. The size of the discretized problem makes… (more)

▼ Adaptivity in both space and time has become the norm for solving problems modeled by partial differential equations. The size of the discretized problem makes uniformly refined grids computationally prohibitive. Adaptive refinement of meshes and time steps allows to capture the phenomena of interest while keeping the cost of a simulation tractable on the current hardware. Many fields in science and engineering require the solution of inverse problems where parameters for a given model are estimated based on available measurement information. In contrast to forward (regular) simulations, inverse problems have not extensively benefited from the adaptive solver technology. Previous research in inverse problems has focused mainly on the continuous approach to calculate sensitivities, and has typically employed fixed time and space meshes in the solution process. Inverse problem solvers that make exclusive use of uniform or static meshes avoid complications such as the differentiation of mesh motion equations, or inconsistencies in the sensitivity equations between subdomains with different refinement levels. However, this comes at the cost of low computational efficiency. More efficient computations are possible through judicious use of adaptive mesh refinement, adaptive time steps, and the discrete adjoint method. This dissertation develops a complete framework for fully discrete adjoint sensitivity analysis and inverse problem solutions, in the context of time dependent, adaptive mesh, and adaptive step models. The discrete framework addresses all the necessary ingredients of a stateâ ofâ theâ art adaptive inverse solution algorithm: adaptive mesh and time step refinement, solution grid transfer operators, a priori and a posteriori error analysis and estimation, and discrete adjoints for sensitivity analysis of fluxâ limited numerical algorithms. Advisors/Committee Members: Sandu, Adrian (committeechair), Ribbens, Calvin J. (committee member), Cao, Yang (committee member), De Sturler, Eric (committee member), Borggaard, Jeffrey T. (committee member).

Subjects/Keywords: Inverse problems; Adjoint Method; Adaptive Mesh Refinement; Automatic Differentiation

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APA (6^th Edition):

Alexe, M. (2011). Adjoint-based space-time adaptive solution algorithms for sensitivity analysis and inverse problems. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/37515

Chicago Manual of Style (16^th Edition):

Alexe, Mihai. “Adjoint-based space-time adaptive solution algorithms for sensitivity analysis and inverse problems.” 2011. Doctoral Dissertation, Virginia Tech. Accessed March 03, 2021. http://hdl.handle.net/10919/37515.

MLA Handbook (7^th Edition):

Alexe, Mihai. “Adjoint-based space-time adaptive solution algorithms for sensitivity analysis and inverse problems.” 2011. Web. 03 Mar 2021.

Vancouver:

Alexe M. Adjoint-based space-time adaptive solution algorithms for sensitivity analysis and inverse problems. [Internet] [Doctoral dissertation]. Virginia Tech; 2011. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/10919/37515.

Council of Science Editors:

Alexe M. Adjoint-based space-time adaptive solution algorithms for sensitivity analysis and inverse problems. [Doctoral Dissertation]. Virginia Tech; 2011. Available from: http://hdl.handle.net/10919/37515

Purdue University

14. Blunt, Janell R. ADAPTIVE MEMORY: ANIMACY AND THE METHOD OF LOCI.

Degree: PhD, Psychological Sciences, 2015, Purdue University

URL: https://docs.lib.purdue.edu/open_access_dissertations/1169

► A functionalist approach to cognition assumes that people’s minds are tuned to process and remember information that benefits our survival or reproduction (Nairne, 2005). One… (more)

Subjects/Keywords: adaptive memory; Animacy; evolution; memory; memory palace; method of loci

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APA (6^th Edition):

Blunt, J. R. (2015). ADAPTIVE MEMORY: ANIMACY AND THE METHOD OF LOCI. (Doctoral Dissertation). Purdue University. Retrieved from https://docs.lib.purdue.edu/open_access_dissertations/1169

Chicago Manual of Style (16^th Edition):

Blunt, Janell R. “ADAPTIVE MEMORY: ANIMACY AND THE METHOD OF LOCI.” 2015. Doctoral Dissertation, Purdue University. Accessed March 03, 2021. https://docs.lib.purdue.edu/open_access_dissertations/1169.

MLA Handbook (7^th Edition):

Blunt, Janell R. “ADAPTIVE MEMORY: ANIMACY AND THE METHOD OF LOCI.” 2015. Web. 03 Mar 2021.

Vancouver:

Blunt JR. ADAPTIVE MEMORY: ANIMACY AND THE METHOD OF LOCI. [Internet] [Doctoral dissertation]. Purdue University; 2015. [cited 2021 Mar 03]. Available from: https://docs.lib.purdue.edu/open_access_dissertations/1169.

Council of Science Editors:

Blunt JR. ADAPTIVE MEMORY: ANIMACY AND THE METHOD OF LOCI. [Doctoral Dissertation]. Purdue University; 2015. Available from: https://docs.lib.purdue.edu/open_access_dissertations/1169

University of Kansas

15. Shi, Lei. Adaptive High-Order Differential Formulation for the Compressible Navier-Stokes Equations.

Degree: PhD, Aerospace Engineering, 2014, University of Kansas

URL: http://hdl.handle.net/1808/27533

► High-order methods have the potential to achieve higher accuracy at lower cost than lower order methods. This potential has been demonstrated conclusively for smooth problems… (more)

Subjects/Keywords: Aerospace engineering; Adaptive Method; Adjoint-based Adaptation; Computational Fluid Dynamics; High-order Method; Navier-Stokes Equations

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APA (6^th Edition):

Shi, L. (2014). Adaptive High-Order Differential Formulation for the Compressible Navier-Stokes Equations. (Doctoral Dissertation). University of Kansas. Retrieved from http://hdl.handle.net/1808/27533

Chicago Manual of Style (16^th Edition):

Shi, Lei. “Adaptive High-Order Differential Formulation for the Compressible Navier-Stokes Equations.” 2014. Doctoral Dissertation, University of Kansas. Accessed March 03, 2021. http://hdl.handle.net/1808/27533.

MLA Handbook (7^th Edition):

Shi, Lei. “Adaptive High-Order Differential Formulation for the Compressible Navier-Stokes Equations.” 2014. Web. 03 Mar 2021.

Vancouver:

Shi L. Adaptive High-Order Differential Formulation for the Compressible Navier-Stokes Equations. [Internet] [Doctoral dissertation]. University of Kansas; 2014. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1808/27533.

Council of Science Editors:

Shi L. Adaptive High-Order Differential Formulation for the Compressible Navier-Stokes Equations. [Doctoral Dissertation]. University of Kansas; 2014. Available from: http://hdl.handle.net/1808/27533

Michigan Technological University

16. Liang, Xiaoyu. JOINT ANALYSIS OF MULTIPLE PHENOTYPES IN ASSOCIATION STUDIES.

Degree: PhD, Department of Mathematical Sciences, 2018, Michigan Technological University

URL: https://digitalcommons.mtu.edu/etdr/602

► Genome-wide association studies (GWAS) have become a very effective research tool to identify genetic variants of underlying various complex diseases. In spite of the… (more)

▼ Genome-wide association studies (GWAS) have become a very effective research tool to identify genetic variants of underlying various complex diseases. In spite of the success of GWAS in identifying thousands of reproducible associations between genetic variants and complex disease, in general, the association between genetic variants and a single phenotype is usually weak. It is increasingly recognized that joint analysis of multiple phenotypes can be potentially more powerful than the univariate analysis, and can shed new light on underlying biological mechanisms of complex diseases. Therefore, developing statistical methods to test for genetic association with multiple phenotypes has become increasingly important. This dissertation contains three chapters and the three chapters include three new methods we developed for jointly analyzing multiple phenotypes. In the first chapter of this dissertation, we propose an Adaptive Fisher’s Combination (AFC) method for joint analysis of multiple phenotypes in association studies. The AFC method combines p-values obtained in standard univariate GWAS by using the optimal number of p-values which is determined by the data. In the second chapter, we propose an Allele-Based Clustering (ABC) approach for the joint analysis of multiple non-normal phenotypes in association studies. In the ABC method, we consider the alleles at a SNP of interest as a dependent variable with two classes, and the correlated phenotypes as predictors to predict the alleles at the SNP of interest. In the third chapter, we develop a novel variable reduction method using hierarchical clustering method (HCM) for joint analysis of multiple phenotypes in association studies. HCM involves two steps. The first step applies a dimension reduction technique by using a representative phenotype for each cluster of phenotypes. Then, existing methods are used in the second step to test the association between genetic variants and the representative phenotypes rather than the individual phenotypes. We perform extensive simulations to evaluate performances of AFC, ABC, and HCM methods and compare the powers of our methods with the powers of some existing methods. Our simulation studies show that the proposed methods have correct type I error rates and are either the most powerful test or comparable with the most powerful test. Finally, we illustrate our proposed methodologies AFC and HCM by analyzing whole-genome genotyping data from a lung function study. The results of real data analysis demonstrated that the proposed methods have great potential in GWAS on complex diseases with multiple phenotypes. Advisors/Committee Members: Shuanglin Zhang, Qiuying Sha.

Subjects/Keywords: Association Study; Multiple Phenotypes; Adaptive Fisher’s Combination Method; Allele-based Clustering Approach; Hierarchical Clustering Method; Applied Statistics; Biostatistics; Statistical Methodology

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APA (6^th Edition):

Liang, X. (2018). JOINT ANALYSIS OF MULTIPLE PHENOTYPES IN ASSOCIATION STUDIES. (Doctoral Dissertation). Michigan Technological University. Retrieved from https://digitalcommons.mtu.edu/etdr/602

Chicago Manual of Style (16^th Edition):

Liang, Xiaoyu. “JOINT ANALYSIS OF MULTIPLE PHENOTYPES IN ASSOCIATION STUDIES.” 2018. Doctoral Dissertation, Michigan Technological University. Accessed March 03, 2021. https://digitalcommons.mtu.edu/etdr/602.

MLA Handbook (7^th Edition):

Liang, Xiaoyu. “JOINT ANALYSIS OF MULTIPLE PHENOTYPES IN ASSOCIATION STUDIES.” 2018. Web. 03 Mar 2021.

Vancouver:

Liang X. JOINT ANALYSIS OF MULTIPLE PHENOTYPES IN ASSOCIATION STUDIES. [Internet] [Doctoral dissertation]. Michigan Technological University; 2018. [cited 2021 Mar 03]. Available from: https://digitalcommons.mtu.edu/etdr/602.

Council of Science Editors:

Liang X. JOINT ANALYSIS OF MULTIPLE PHENOTYPES IN ASSOCIATION STUDIES. [Doctoral Dissertation]. Michigan Technological University; 2018. Available from: https://digitalcommons.mtu.edu/etdr/602

NSYSU

17. Cheng, Chao-Chun. Adaptive stepsize control in path tracking for total degree homotopy continuation method.

Degree: Master, Applied Mathematics, 2012, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0706112-135542

► The theory of solving polynomial systems by homotopy continuation method has been proposed by Garcia, Zangwill and Drexler, and the most typical method in this… (more)

Subjects/Keywords: continuation method; isolated solutions; polynomial equations; adaptive stepsize control; prediction and correction

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APA (6^th Edition):

Cheng, C. (2012). Adaptive stepsize control in path tracking for total degree homotopy continuation method. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0706112-135542

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cheng, Chao-Chun. “Adaptive stepsize control in path tracking for total degree homotopy continuation method.” 2012. Thesis, NSYSU. Accessed March 03, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0706112-135542.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cheng, Chao-Chun. “Adaptive stepsize control in path tracking for total degree homotopy continuation method.” 2012. Web. 03 Mar 2021.

Vancouver:

Cheng C. Adaptive stepsize control in path tracking for total degree homotopy continuation method. [Internet] [Thesis]. NSYSU; 2012. [cited 2021 Mar 03]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0706112-135542.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cheng C. Adaptive stepsize control in path tracking for total degree homotopy continuation method. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0706112-135542

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Colorado

18. Reckinger, Shanon Marie. Adaptive Wavelet-Based Ocean Circulation Modeling.

Degree: PhD, Mechanical Engineering, 2011, University of Colorado

URL: https://scholar.colorado.edu/mcen_gradetds/29

► Ocean modeling is a crucial component in understanding our climate system. The advancement of the numerical methods used for ocean modeling is the focus… (more)

Subjects/Keywords: adaptive grid; boundary currents; immersed boundary method; ocean modeling; tsunami; wavelets; Applied Mathematics; Mechanical Engineering

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APA (6^th Edition):

Reckinger, S. M. (2011). Adaptive Wavelet-Based Ocean Circulation Modeling. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/mcen_gradetds/29

Chicago Manual of Style (16^th Edition):

Reckinger, Shanon Marie. “Adaptive Wavelet-Based Ocean Circulation Modeling.” 2011. Doctoral Dissertation, University of Colorado. Accessed March 03, 2021. https://scholar.colorado.edu/mcen_gradetds/29.

MLA Handbook (7^th Edition):

Reckinger, Shanon Marie. “Adaptive Wavelet-Based Ocean Circulation Modeling.” 2011. Web. 03 Mar 2021.

Vancouver:

Reckinger SM. Adaptive Wavelet-Based Ocean Circulation Modeling. [Internet] [Doctoral dissertation]. University of Colorado; 2011. [cited 2021 Mar 03]. Available from: https://scholar.colorado.edu/mcen_gradetds/29.

Council of Science Editors:

Reckinger SM. Adaptive Wavelet-Based Ocean Circulation Modeling. [Doctoral Dissertation]. University of Colorado; 2011. Available from: https://scholar.colorado.edu/mcen_gradetds/29

University of Washington

19. Griffin, Maryclare Carney. Model-Based Penalized Regression.

Degree: PhD, 2018, University of Washington

URL: http://hdl.handle.net/1773/43160

► This thesis contains three chapters that consider penalized regression from a model-based perspective, interpreting penalties as assumed prior distributions for unknown regression coefficients. In the… (more)

Subjects/Keywords: adaptive inference; empirical Bayes; method of moments; penalized regression; shrinkage priors; structured data; Statistics; Statistics

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APA (6^th Edition):

Griffin, M. C. (2018). Model-Based Penalized Regression. (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/43160

Chicago Manual of Style (16^th Edition):

Griffin, Maryclare Carney. “Model-Based Penalized Regression.” 2018. Doctoral Dissertation, University of Washington. Accessed March 03, 2021. http://hdl.handle.net/1773/43160.

MLA Handbook (7^th Edition):

Griffin, Maryclare Carney. “Model-Based Penalized Regression.” 2018. Web. 03 Mar 2021.

Vancouver:

Griffin MC. Model-Based Penalized Regression. [Internet] [Doctoral dissertation]. University of Washington; 2018. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1773/43160.

Council of Science Editors:

Griffin MC. Model-Based Penalized Regression. [Doctoral Dissertation]. University of Washington; 2018. Available from: http://hdl.handle.net/1773/43160

University of Saskatchewan

20. Huang, Danny. Large Growth Deformations of Thin Tissue using Solid-Shells.

Degree: 2020, University of Saskatchewan

URL: http://hdl.handle.net/10388/13124

► Simulating large scale expansion of thin structures, such as in growing leaves, is challenging. Sold-shells have a number of potential advantages over conventional thin-shell methods,… (more)

Subjects/Keywords: Physics-Based Simulation; Finite Element Method; Growth; Solid-Shells; Diffusion; Adaptive Remeshing; Collision Handling

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APA (6^th Edition):

Huang, D. (2020). Large Growth Deformations of Thin Tissue using Solid-Shells. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/13124

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Huang, Danny. “Large Growth Deformations of Thin Tissue using Solid-Shells.” 2020. Thesis, University of Saskatchewan. Accessed March 03, 2021. http://hdl.handle.net/10388/13124.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Huang, Danny. “Large Growth Deformations of Thin Tissue using Solid-Shells.” 2020. Web. 03 Mar 2021.

Vancouver:

Huang D. Large Growth Deformations of Thin Tissue using Solid-Shells. [Internet] [Thesis]. University of Saskatchewan; 2020. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/10388/13124.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Huang D. Large Growth Deformations of Thin Tissue using Solid-Shells. [Thesis]. University of Saskatchewan; 2020. Available from: http://hdl.handle.net/10388/13124

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Indian Institute of Science

21. Samantaray, Swastik. Robust Adaptive Control of a Laser Beam System for Static and Moving Targets.

Degree: MSc Engg, Faculty of Engineering, 2018, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/3204

► The motivation of this thesis is to propose a robust control technique for a laser beam system with target estimation. The laser beam is meant… (more)

▼ The motivation of this thesis is to propose a robust control technique for a laser beam system with target estimation. The laser beam is meant to track and fall on a particular portion of the target until the operation is accomplished. There are many applications of such a system. For example, laser range finder uses laser beam to determine the distance of the target from the source. Recently, unmanned aerial drones have been developed that run on laser power. Drone batteries can be recharged with power sup-ply from laser source on the ground. Laser is also used in high energy laser weapon for defence applications. However, laser beams travelling long distances deviate from the desired location on the target due to continually changing atmospheric parameters (jitter effect) such as pressure, temperature, humidity and wind speed. This deviation error is controlled precisely using a lightweight fast steering mirror (FSM) for fine correction. Furthermore, for a moving target, minimizing the deviation of the beam is not sufficient. Hence, in coarse correction, the target has to be tracked by determining its position and assigning the corresponding azimuth and elevation angles to the laser sources. Once these firing angles are settled within an accuracy of +3 mrad, the effort for minimizing the beam deviation (fine correction) takes place to improve the accu-racy to +10 rad. The beam deviation due to jitter effect is measured by a narrow field of view (NFOV) camera at a high frame rate (1000 frames per second), which takes one frame to com-pute this error information. As a result, controller receives error information witha delay from NFOV. This data cannot be modelled for prediction and hence, a few promising data driven techniques have been implemented for one step ahead prediction of the beam deviation. The predictions are performed over a set of sliding window data online after rejecting the outliers through least square approximated straight line. In time domain, methods like auto-regressive least square, polynomial extrapolation (zeroth, first and second order), Chebyshev polynomial extrapolation, spline curve extrapolation are implemented. Further, a convex combination of zeroth order hold and spline extrapolation is implemented. In frequency domain, Fourier series-Fourier transform and L-point Discrete Fourier Transform stretching are implemented where the frequency component of the signal are analysed properly and propagated for one step ahead prediction. After one step ahead prediction, three nominal controllers (PID, DI and DLQR) are designed such that the output of FSM tracks the predicted beam deviation and the performances of these controllers are compared. Since the FSM is excited by high frequency signals, its performance degrades, which leads to parameter degradation in the mathematical model. Hence, three adaptive controllers have been implemented, namely, model reference adaptive control (MRAC), model reference adaptive sliding mode control (MRASMC) and model following neuro-adaptive control…

Subjects/Keywords: Laser Beam System; Laser System; Adoptive Control Method; Optics Theory; Steering Mirror Modelling; Tracking Radars; Fine Correction; Robust Control; Model Reference Adaptive Control (MRAC),; Model Reference Adaptive Sliding Mode Control (MRASMC); Model Following Neuro-Adaptive Control (MFNAC); Robust Adaptive Control; Aerospace Engineering

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APA (6^th Edition):

Samantaray, S. (2018). Robust Adaptive Control of a Laser Beam System for Static and Moving Targets. (Masters Thesis). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/3204

Chicago Manual of Style (16^th Edition):

Samantaray, Swastik. “Robust Adaptive Control of a Laser Beam System for Static and Moving Targets.” 2018. Masters Thesis, Indian Institute of Science. Accessed March 03, 2021. http://etd.iisc.ac.in/handle/2005/3204.

MLA Handbook (7^th Edition):

Samantaray, Swastik. “Robust Adaptive Control of a Laser Beam System for Static and Moving Targets.” 2018. Web. 03 Mar 2021.

Vancouver:

Samantaray S. Robust Adaptive Control of a Laser Beam System for Static and Moving Targets. [Internet] [Masters thesis]. Indian Institute of Science; 2018. [cited 2021 Mar 03]. Available from: http://etd.iisc.ac.in/handle/2005/3204.

Council of Science Editors:

Samantaray S. Robust Adaptive Control of a Laser Beam System for Static and Moving Targets. [Masters Thesis]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/3204

Johannes Gutenberg Universität Mainz

22. Müller, Andreas. Untersuchungen zur Genauigkeit adaptiver unstetiger Galerkin-Simulationen mit Hilfe von Luftblasen-Testfällen.

Degree: 2012, Johannes Gutenberg Universität Mainz

URL: http://ubm.opus.hbz-nrw.de/volltexte/2012/3168/

►

Allgemein erlaubt adaptive Gitterverfeinerung eine Steigerung der Effizienz numerischer Simulationen ohne dabei die Genauigkeit des Ergebnisses signifikant zu verschlechtern. Es ist jedoch noch nicht erforscht,… (more)

▼

Allgemein erlaubt adaptive Gitterverfeinerung eine Steigerung der Effizienz numerischer Simulationen ohne dabei die Genauigkeit des Ergebnisses signifikant zu verschlechtern. Es ist jedoch noch nicht erforscht, in welchen Bereichen des Rechengebietes die räumliche Auflösung tatsächlich vergröbert werden kann, ohne die Genauigkeit des Ergebnisses signifikant zu beeinflussen. Diese Frage wird hier für ein konkretes Beispiel von trockener atmosphärischer Konvektion untersucht, nämlich der Simulation von warmen Luftblasen. Zu diesem Zweck wird ein neuartiges numerisches Modell entwickelt, das auf diese spezielle Anwendung ausgerichtet ist. Die kompressiblen Euler-Gleichungen werden mit einer unstetigen Galerkin Methode gelöst. Die Zeitintegration geschieht mit einer semi-implizite Methode und die dynamische Adaptivität verwendet raumfüllende Kurven mit Hilfe der Funktionsbibliothek AMATOS. Das numerische Modell wird validiert mit Hilfe einer Konvergenzstudie und fünf Standard-Testfällen. Eine Methode zum Vergleich der Genauigkeit von Simulationen mit verschiedenen Verfeinerungsgebieten wird eingeführt, die ohne das Vorhandensein einer exakten Lösung auskommt. Im Wesentlichen geschieht dies durch den Vergleich von Eigenschaften der Lösung, die stark von der verwendeten räumlichen Auflösung abhängen. Im Fall einer aufsteigenden Warmluftblase ist der zusätzliche numerische Fehler durch die Verwendung der Adaptivität kleiner als 1% des gesamten numerischen Fehlers, wenn die adaptive Simulation mehr als 50% der Elemente einer uniformen hoch-aufgelösten Simulation verwendet. Entsprechend ist die adaptive Simulation fast doppelt so schnell wie die uniforme Simulation.

Adaptive mesh refinement generally serves to increase computational efficiency without compromising the accuracy of the numerical solution significantly. However it is an open question in which regions the spatial resolution can actually be coarsened without affecting the accuracy of the result significantly. This question is investigated for a specific example of dry atmospheric convection, namely the simulation of warm air bubbles. For this purpose a novel numerical model is developed that is tailored towards this specific meteorological problem. The compressible Euler equations are solved with a Discontinuous Galerkin method. Time integration is done with a semi-implicit approach and the dynamic grid adaptivity uses space filling curves via the AMATOS function library. The numerical model is validated with a convergence study and five standard test cases. A method is introduced which allows one to compare the accuracy between different choices of refinement regions even in a case when the exact solution is not known. Essentially this is done by comparing features of the solution that are strongly sensitive to spatial resolution. For a rising warm air bubble the additional error by using adaptivity is smaller than 1% of the total numerical error if the average number of elements used for the adaptive simulation is about 50% smaller than the number used for…

Subjects/Keywords: Adaptive Gitterverfeinerung, Verfeinerungsgebiete, Unstetige Galerkin Methode, Warmluftblase, Fehlerschaetzer; adaptive mesh refinement, refinement region, Discontinuous Galerkin method, warm air bubble, error estimator; Natural sciences and mathematics

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APA (6^th Edition):

Müller, A. (2012). Untersuchungen zur Genauigkeit adaptiver unstetiger Galerkin-Simulationen mit Hilfe von Luftblasen-Testfällen. (Doctoral Dissertation). Johannes Gutenberg Universität Mainz. Retrieved from http://ubm.opus.hbz-nrw.de/volltexte/2012/3168/

Chicago Manual of Style (16^th Edition):

Müller, Andreas. “Untersuchungen zur Genauigkeit adaptiver unstetiger Galerkin-Simulationen mit Hilfe von Luftblasen-Testfällen.” 2012. Doctoral Dissertation, Johannes Gutenberg Universität Mainz. Accessed March 03, 2021. http://ubm.opus.hbz-nrw.de/volltexte/2012/3168/.

MLA Handbook (7^th Edition):

Müller, Andreas. “Untersuchungen zur Genauigkeit adaptiver unstetiger Galerkin-Simulationen mit Hilfe von Luftblasen-Testfällen.” 2012. Web. 03 Mar 2021.

Vancouver:

Müller A. Untersuchungen zur Genauigkeit adaptiver unstetiger Galerkin-Simulationen mit Hilfe von Luftblasen-Testfällen. [Internet] [Doctoral dissertation]. Johannes Gutenberg Universität Mainz; 2012. [cited 2021 Mar 03]. Available from: http://ubm.opus.hbz-nrw.de/volltexte/2012/3168/.

Council of Science Editors:

Müller A. Untersuchungen zur Genauigkeit adaptiver unstetiger Galerkin-Simulationen mit Hilfe von Luftblasen-Testfällen. [Doctoral Dissertation]. Johannes Gutenberg Universität Mainz; 2012. Available from: http://ubm.opus.hbz-nrw.de/volltexte/2012/3168/

23. Morshed, Monjur. Efficient Finite-difference Methods for Sensitivity Analysis of Stiff Stochastic Discrete Models of Biochemical Systems.

Degree: 2017, University of Waterloo

URL: http://hdl.handle.net/10012/12683

► In the study of Systems Biology it is necessary to simulate cellular processes and chemical reactions that comprise biochemical systems. This is achieved through a… (more)

Subjects/Keywords: Chemical Master Equation; Sensitivity analysis; Discrete stochastic model; Finite-difference approximation; Adaptive tau-leaping method; Adaptive implicit tau-leaping strategies; Identifiability analysis

10 more images…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Morshed, M. (2017). Efficient Finite-difference Methods for Sensitivity Analysis of Stiff Stochastic Discrete Models of Biochemical Systems. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/12683

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Morshed, Monjur. “Efficient Finite-difference Methods for Sensitivity Analysis of Stiff Stochastic Discrete Models of Biochemical Systems.” 2017. Thesis, University of Waterloo. Accessed March 03, 2021. http://hdl.handle.net/10012/12683.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Morshed, Monjur. “Efficient Finite-difference Methods for Sensitivity Analysis of Stiff Stochastic Discrete Models of Biochemical Systems.” 2017. Web. 03 Mar 2021.

Vancouver:

Morshed M. Efficient Finite-difference Methods for Sensitivity Analysis of Stiff Stochastic Discrete Models of Biochemical Systems. [Internet] [Thesis]. University of Waterloo; 2017. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/10012/12683.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Morshed M. Efficient Finite-difference Methods for Sensitivity Analysis of Stiff Stochastic Discrete Models of Biochemical Systems. [Thesis]. University of Waterloo; 2017. Available from: http://hdl.handle.net/10012/12683

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

INP Toulouse

24. Daquin, Priscillia. Méthodes quasi-optimales pour la résolution des équations intégrales de frontière en électromagnétisme : Quasi-optimal and frequency robust methods for solving integral equations in electromagnetics.

Degree: Docteur es, Electromagnétisme et Systèmes Haute Fréquence, 2017, INP Toulouse

URL: http://www.theses.fr/2017INPT0094

►

Il existe une grande quantité de méthodes numériques adaptées d’une part à la modélisation, et d'autre part à la résolution des équations de Maxwell. En… (more)

▼

Il existe une grande quantité de méthodes numériques adaptées d’une part à la modélisation, et d'autre part à la résolution des équations de Maxwell. En particulier, la méthode des éléments nis de frontière (BEM), ou méthode des Moments (MoM), semble appropriée pour la mise en équation des phénomènes de diffraction par des objets parfaitement conducteurs, en limitant le cadre de l'étude à la frontière entre l'objet diffractant et le milieu extérieur. Cette méthode mène systématiquement à la résolution d’un système linéaire dense, que nous parvenons à compresser en l'approchant numériquement par une matrice hiérarchique creuse, appelée H-matrice. Cette approximation peut être complétée d'une ré-agglomération permettant d'améliorer la sparsité de la H-matrice et ainsi d'optimiser davantage la résolution du système traité. La hiérarchisation du système s'effectue en considérant la matrice traitée par blocs, que l'on peut ou non compresser selon une condition d'admissibilité. L'Approximation en Croix Adaptative (ACA) ou l'Approximation en Croix Hybride (HCA) sont deux méthodes de compression que l'on peut alors appliquer aux blocs admissibles. Il existe une grande quantité de méthodes numériques adaptées d’une part à la modélisation, et d'autre part à la résolution des équations de Maxwell. En particulier, la méthode des éléments finis de frontière (BEM), ou méthode des Moments (MoM), semble appropriée pour la mise en équation des phénomènes de diffraction par des objets parfaitement conducteurs, en limitant le cadre de l'étude à la frontière entre l'objet diffractant et le milieu extérieur. Cette méthode mène systématiquement à la résolution d’un système linéaire dense, que nous parvenons à compresser en l'approchant numériquement par une matrice hiérarchique creuse, appelée H-matrice. Cette approximation peut être complétée d'une ré-agglomération permettant d'améliorer la sparsité de la H-matrice et ainsi d'optimiser davantage la résolution du système traité. La hiérarchisation du système s'effectue en considérant la matrice traitée par blocs, que l'on peut ou non compresser selon une condition d'admissibilité. L'Approximation en Croix Adaptative (ACA) ou l'Approximation en Croix Hybride (HCA) sont deux méthodes de compression que l'on peut alors appliquer aux blocs admissibles. Le travail de cette thèse consiste dans un premier temps à valider le format H-matrice en 2D et en 3D en utilisant l'ACA, puis d'y appliquer la méthode HCA, encore peu exploitée. Nous pouvons alors résoudre le système linéaire issu de la BEM en utilisant différents solveurs, directs ou non, adaptés au format hiérarchique. En particulier, nous pourrons constater l'efficacité du préconditionnement LU hiérarchique sur un solveur itératif. Nous pourrons alors appliquer ce formalisme au cas des surfaces rugueuses ou encore des fibres à cristaux photoniques (PCF). Il sera également possible de paralléliser certaines opérations sur architecture partagée afin de réduire de nouveau le coût temporel de la résolution.

A lot of numerical methods are…

Advisors/Committee Members: Poirier, Jean-René (thesis director), Perrussel, Ronan (thesis director).

Subjects/Keywords: Méthodes numériques; Equations intégrales de frontière; Matrices hiérarchiques; Adaptive Cross Approximation; Hybrid Cross Approximation; Parallélisation; Numerical methods; Boundary element method; Hierarchical matrices; Adaptive Cross Approximation; Hybrid Cross Approximation; Parallel computing

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Daquin, P. (2017). Méthodes quasi-optimales pour la résolution des équations intégrales de frontière en électromagnétisme : Quasi-optimal and frequency robust methods for solving integral equations in electromagnetics. (Doctoral Dissertation). INP Toulouse. Retrieved from http://www.theses.fr/2017INPT0094

Chicago Manual of Style (16^th Edition):

Daquin, Priscillia. “Méthodes quasi-optimales pour la résolution des équations intégrales de frontière en électromagnétisme : Quasi-optimal and frequency robust methods for solving integral equations in electromagnetics.” 2017. Doctoral Dissertation, INP Toulouse. Accessed March 03, 2021. http://www.theses.fr/2017INPT0094.

MLA Handbook (7^th Edition):

Daquin, Priscillia. “Méthodes quasi-optimales pour la résolution des équations intégrales de frontière en électromagnétisme : Quasi-optimal and frequency robust methods for solving integral equations in electromagnetics.” 2017. Web. 03 Mar 2021.

Vancouver:

Daquin P. Méthodes quasi-optimales pour la résolution des équations intégrales de frontière en électromagnétisme : Quasi-optimal and frequency robust methods for solving integral equations in electromagnetics. [Internet] [Doctoral dissertation]. INP Toulouse; 2017. [cited 2021 Mar 03]. Available from: http://www.theses.fr/2017INPT0094.

Council of Science Editors:

Daquin P. Méthodes quasi-optimales pour la résolution des équations intégrales de frontière en électromagnétisme : Quasi-optimal and frequency robust methods for solving integral equations in electromagnetics. [Doctoral Dissertation]. INP Toulouse; 2017. Available from: http://www.theses.fr/2017INPT0094

NSYSU

25. Ting, Fu-Hsuan. Approach to the Influencing Factors of Partnership in E-Marketplace.

Degree: Master, Business Management, 2001, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629101-143834

► Approach to the Influencing Factors of Partnership in E-Marketplace Abstract In light of the inter-dependency between emerging technology and inter-organizational relationship, an initial research framework… (more)

Subjects/Keywords: Adaptive Struturation Theory; E-marketplace; Partnership; Fuzzy Delphi Method

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ting, F. (2001). Approach to the Influencing Factors of Partnership in E-Marketplace. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629101-143834

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ting, Fu-Hsuan. “Approach to the Influencing Factors of Partnership in E-Marketplace.” 2001. Thesis, NSYSU. Accessed March 03, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629101-143834.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ting, Fu-Hsuan. “Approach to the Influencing Factors of Partnership in E-Marketplace.” 2001. Web. 03 Mar 2021.

Vancouver:

Ting F. Approach to the Influencing Factors of Partnership in E-Marketplace. [Internet] [Thesis]. NSYSU; 2001. [cited 2021 Mar 03]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629101-143834.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ting F. Approach to the Influencing Factors of Partnership in E-Marketplace. [Thesis]. NSYSU; 2001. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629101-143834

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

26. Claudino, Marco Alexandre. O uso do estimador residual no refinamento adaptativo de malhas em elementos finitos.

Degree: Mestrado, Matemática Aplicada, 2015, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/45/45132/tde-25052015-230057/ ;

►

Na obtenção de aproximações numéricas para Equações Diferenciais Parciais Elípticas utilizando o Método dos Elementos Finitos (MEF) alguns problemas apresentam valores maiores para o erro… (more)

▼

Na obtenção de aproximações numéricas para Equações Diferenciais Parciais Elípticas utilizando o Método dos Elementos Finitos (MEF) alguns problemas apresentam valores maiores para o erro somente em algumas determinadas regiões do domínio como, por exemplo, regiões onde existam singularidades na solução contínua do problema. Uma possível alternativa para reduzir o erro cometido nestas regiões é aumentar o número de elementos nos trechos onde o erro cometido foi considerado grande. A questão principal é como identificar essas regiões, dado que a solução do problema contínuo é desconhecida. Neste trabalho iremos apresentar a chamada estimativa residual, que fornece um estimador do erro cometido na aproximação utilizando apenas os valores conhecidos dos contornos e a aproximação obtida sobre uma dada partição de elementos. Vamos discutir a relação entre a estimativa residual e o erro cometido na aproximação, além de utilizar as estimativas na construção de um algoritmo adaptativo para as malhas em estudo. Utilizando o software FreeFem++ serão obtidas aproximações para a Equação de Poisson e para o sistema de equações associado à Elasticidade Linear e por meio do estimador residual será analisado o erro cometido nas aproximações e a necessidade do refinamento adaptativo das malhas.

In obtaining numerical approximations for solutions to Elliptic Partial Differential Equations using the Finite Element Method (FEM) one sees that some problems have higher values for the error only in certain domain regions such as, for example, regions where the solution of the continous problem is singular. A possible alternative to reduce the error in these regions is to increase the number of elements in the partions where the error was considered large. The main issue is how to identify these regions, since the solution of the continuous problem is unknown. In this work we present the so-called residual estimate, which provides an error estimation approach which uses only the known values on the contours and the obtained approximation on a given discretization. We will discuss the relationship between the residual estimate and the error, and how to use the estimate for adaptively refining the mesh. Solutions for the Poisson equation and the Linear elasticity system of equations, and the residual estimates for the analysis of mesh refinement will be computed using the FreeFem++ software.

Advisors/Committee Members: Kuhl, Nelson Mugayar.

Subjects/Keywords: Adaptive mesh refinement; Estimativas residuais; Finite element method; Método dos elementos finitos; Refinamento adaptativo de malhas.; Residual estimates

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Claudino, M. A. (2015). O uso do estimador residual no refinamento adaptativo de malhas em elementos finitos. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/45/45132/tde-25052015-230057/ ;

Chicago Manual of Style (16^th Edition):

Claudino, Marco Alexandre. “O uso do estimador residual no refinamento adaptativo de malhas em elementos finitos.” 2015. Masters Thesis, University of São Paulo. Accessed March 03, 2021. http://www.teses.usp.br/teses/disponiveis/45/45132/tde-25052015-230057/ ;.

MLA Handbook (7^th Edition):

Claudino, Marco Alexandre. “O uso do estimador residual no refinamento adaptativo de malhas em elementos finitos.” 2015. Web. 03 Mar 2021.

Vancouver:

Claudino MA. O uso do estimador residual no refinamento adaptativo de malhas em elementos finitos. [Internet] [Masters thesis]. University of São Paulo; 2015. [cited 2021 Mar 03]. Available from: http://www.teses.usp.br/teses/disponiveis/45/45132/tde-25052015-230057/ ;.

Council of Science Editors:

Claudino MA. O uso do estimador residual no refinamento adaptativo de malhas em elementos finitos. [Masters Thesis]. University of São Paulo; 2015. Available from: http://www.teses.usp.br/teses/disponiveis/45/45132/tde-25052015-230057/ ;

University of Alberta

27. Boraey, Mohammed A. A Particle Engineering Approach for the Design of Structured Microparticles.

Degree: PhD, Department of Mechanical Engineering, 2014, University of Alberta

URL: https://era.library.ualberta.ca/files/7p88ch910

► The process of microparticle formation from evaporating microdroplets is the main production method for many products. For most of these applications (especially pharmaceutical ones) the… (more)

▼ The process of microparticle formation from evaporating microdroplets is the main production method for many products. For most of these applications (especially pharmaceutical ones) the properties and morphology of the final dry particle have to be precisely tailored to ensure the proper functionality of the final product. Particle engineering focuses on improving particle production processes by developing physical understanding and applying models to deliberately alter the properties of the particles. The present work discusses two aspects of the microparticle formation process, the evaporation rate and the transient concentration profiles. Although many other aspects are involved, it is thought that these two are the most influential ones. Chapter one gives a brief introduction to the process of structured microparticle formation along with the important particle physical properties and the associated challenges. Chapter two and three introduce a new particle formation theory for the formation of microparticles when diffusion is the main mechanism of mass transport. They also introduce a simplification of the theory results through a hybrid analytical/numerical model to ease the use of the results. Chapter four introduces a novel hybrid technique for calculation of the variable evaporation rate of microdroplets given knowledge of the droplet trajectory and the solvent material properties. A simplification of this approach is also proposed in the case when the trajectory data has a wide margin of uncertainty. In chapter five, the asymptotic state solution and the transient solution of the concentration profiles of an evaporating cylindrical cylinder were derived. These results are used to verify the new model proposed in chapters six and seven. Chapter six and seven propose a new numerical model (The Adaptive Interface Sweeping Method) for the calculation of the transient concentration profiles of an evaporating solution droplet. This model is capable of modeling many physical mechanisms involved in the particle formation process. It also offers a viable technique in dealing with variable material properties and evaporation rates. Chapter eight gives a brief discussion of the results introduced through the thesis and recommendations for future work.

Subjects/Keywords: Diffusion controlled microparticles formation; The Adaptive Interface Sweeping Method; Concentration profiles; Variable evaporation rate; Structured microparticles; Particle Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Boraey, M. A. (2014). A Particle Engineering Approach for the Design of Structured Microparticles. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/7p88ch910

Chicago Manual of Style (16^th Edition):

Boraey, Mohammed A. “A Particle Engineering Approach for the Design of Structured Microparticles.” 2014. Doctoral Dissertation, University of Alberta. Accessed March 03, 2021. https://era.library.ualberta.ca/files/7p88ch910.

MLA Handbook (7^th Edition):

Boraey, Mohammed A. “A Particle Engineering Approach for the Design of Structured Microparticles.” 2014. Web. 03 Mar 2021.

Vancouver:

Boraey MA. A Particle Engineering Approach for the Design of Structured Microparticles. [Internet] [Doctoral dissertation]. University of Alberta; 2014. [cited 2021 Mar 03]. Available from: https://era.library.ualberta.ca/files/7p88ch910.

Council of Science Editors:

Boraey MA. A Particle Engineering Approach for the Design of Structured Microparticles. [Doctoral Dissertation]. University of Alberta; 2014. Available from: https://era.library.ualberta.ca/files/7p88ch910

Université de Grenoble

28. Rameau, Julien. Caractérisation de la population de planètes géantes à grandes séparations. Imagerie différentielle avec NaCo et SPHERE au VLT : Characterization of the population of wide-orbit giant planets. Differential imaging with NaCo and SPHERE at the VLT.

Degree: Docteur es, Astronomie et astrophysique, 2014, Université de Grenoble

URL: http://www.theses.fr/2014GRENY051

►

La formation, l’évolution et la structure des planètes géantes font parties des grandesproblématiques de l’astrophysique moderne. Les planète géantes ont un rôle majeur carelles possèdent… (more)

▼

La formation, l’évolution et la structure des planètes géantes font parties des grandesproblématiques de l’astrophysique moderne. Les planète géantes ont un rôle majeur carelles possèdent la plupart de la masse des systèmes planétaires et donc influencent leursévolutions dynamiques. Mon travail de thèse s’inscrit dans une démarche observationnellequi est essentielle pour apporter des contraintes sur la diversité des systèmes exoplanétaires.Mes premiers résultats de thèse sont issus d’une campagne d’observations sur trois ansréalisées avec l’instrument NaCo au VLT. Mes observations de HD142527 excluent laprésence d’une planète géante dans le disque et favoriseraient plutôt un système multiplede faible masse pour expliquer les structures de ce disque de transition. J’ai égalementdétecté une planète géante autour de HD95086. Cette planète possède des propriétés atmosphériquesparticulières. Sa présence fait de HD95086 un rare exemple de systèmesimagés possédant un disque de débris et une planète géante. Enfin, j’ai réalisé une étudestatistique sur l’ensemble du relevé et montré que les planètes géantes sur des orbiteséloignées sont rares (10 − 20 %) et ne peuvent pas s’être formées majoritairement pareffondrement direct du gaz dans un disque instable.La dernière partie de mon travail de thèse a été consacrée à l’étude du mode d’imageriedifférentielle simultanée spectrale. J’ai identifié les biais particuliers liés à la réductionde ce type de données et ai montré que leurs analyses nécessitent l’utilisation de modèlesd’évolution. Cette étude permettra d’exploiter les données de l’instrument IRDISde SPHERE installé au VLT.

How giant exoplanet form, evolve and are made of is one of the biggest challenge of modernastronomy. They play an important role as they carry most of the planetary systemmasses. Therefore, they strongly impact their dynamics and the fate of these systems tohost life. My PhD thesis falls within an observational approach that is mandatory to bringconstraints on the diversity of planetary systems.I got my first results from a three-year survey, with NaCo at VLT. My observations ofHD142527 excluded the presence of massive giants planets to explain the structures of thistransitional disk and might favor a light multiple system. I also detected a giant planetaround HD95086 and I showed that it has particular atmospheric properties. Finally, Icarried out a statistical analysis of the whole survey to show that giant planets on wideorbitsare rare (10 − 20 %) and could not be formed via direct collapse of unstable disks.I dedicated the last part of my work to investigate the spectral simultaneous differentialimaging mode. I pointed out the biases associated to the reduction of these data andshowed that evolutionary models have to be used to analyze them. This study might helpto exploit the full potential of SPHERE/IRDIS data.

Advisors/Committee Members: Lagrange, Anne-Marie (thesis director), Chauvin, Gaël (thesis director).

Subjects/Keywords: Instrumentation : optique-adaptative; Méthode : statistique; Étoiles : HD95086, HD142527; Système planétaire; Instrumentation : adaptive-optics; Method : statistics; Stars : HD95086, HD142527; Planetary system; 530

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Rameau, J. (2014). Caractérisation de la population de planètes géantes à grandes séparations. Imagerie différentielle avec NaCo et SPHERE au VLT : Characterization of the population of wide-orbit giant planets. Differential imaging with NaCo and SPHERE at the VLT. (Doctoral Dissertation). Université de Grenoble. Retrieved from http://www.theses.fr/2014GRENY051

Chicago Manual of Style (16^th Edition):

Rameau, Julien. “Caractérisation de la population de planètes géantes à grandes séparations. Imagerie différentielle avec NaCo et SPHERE au VLT : Characterization of the population of wide-orbit giant planets. Differential imaging with NaCo and SPHERE at the VLT.” 2014. Doctoral Dissertation, Université de Grenoble. Accessed March 03, 2021. http://www.theses.fr/2014GRENY051.

MLA Handbook (7^th Edition):

Rameau, Julien. “Caractérisation de la population de planètes géantes à grandes séparations. Imagerie différentielle avec NaCo et SPHERE au VLT : Characterization of the population of wide-orbit giant planets. Differential imaging with NaCo and SPHERE at the VLT.” 2014. Web. 03 Mar 2021.

Vancouver:

Rameau J. Caractérisation de la population de planètes géantes à grandes séparations. Imagerie différentielle avec NaCo et SPHERE au VLT : Characterization of the population of wide-orbit giant planets. Differential imaging with NaCo and SPHERE at the VLT. [Internet] [Doctoral dissertation]. Université de Grenoble; 2014. [cited 2021 Mar 03]. Available from: http://www.theses.fr/2014GRENY051.

Council of Science Editors:

Rameau J. Caractérisation de la population de planètes géantes à grandes séparations. Imagerie différentielle avec NaCo et SPHERE au VLT : Characterization of the population of wide-orbit giant planets. Differential imaging with NaCo and SPHERE at the VLT. [Doctoral Dissertation]. Université de Grenoble; 2014. Available from: http://www.theses.fr/2014GRENY051

29. Manna, Manpreet singh. electromagnetic field analysis of linear induction motor by self adaptive finite element method; -.

Degree: Electrical and instrumentation Engineering, 2014, INFLIBNET

URL: http://shodhganga.inflibnet.ac.in/handle/10603/39286

None

References p.251-270

Advisors/Committee Members: Marwaha, Sanjay.

Subjects/Keywords: electromagnetic field; finite element method; linear induction; self adaptive

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Manna, M. s. (2014). electromagnetic field analysis of linear induction motor by self adaptive finite element method; -. (Thesis). INFLIBNET. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/39286

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Manna, Manpreet singh. “electromagnetic field analysis of linear induction motor by self adaptive finite element method; -.” 2014. Thesis, INFLIBNET. Accessed March 03, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/39286.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Manna, Manpreet singh. “electromagnetic field analysis of linear induction motor by self adaptive finite element method; -.” 2014. Web. 03 Mar 2021.

Vancouver:

Manna Ms. electromagnetic field analysis of linear induction motor by self adaptive finite element method; -. [Internet] [Thesis]. INFLIBNET; 2014. [cited 2021 Mar 03]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/39286.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Manna Ms. electromagnetic field analysis of linear induction motor by self adaptive finite element method; -. [Thesis]. INFLIBNET; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/39286

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

30. Wang, Yanqing. Relative Risks Analysis in Nutritional Epidemiology.

Degree: PhD, Statistics, 2014, Texas A&M University

URL: http://hdl.handle.net/1969.1/153663

► Motivated by a logistic regression problem involving diet and cancer, we reconsider the problem of forming a confidence interval for the ratio of two location… (more)

▼ Motivated by a logistic regression problem involving diet and cancer, we reconsider the problem of forming a confidence interval for the ratio of two location parameters. We develop a new methodology, which we call the Direct Integral Method for Ratios (DIMER). In simulations, we compare this method to many others, including Wald's method, Fieller's interval, Hayya's method, the nonparametric bootstrap and the parametric bootstrap. These simulations show that, generally, DIMER more closely achieves the nominal confidence level, and in those cases that the other methods achieve the nominal levels, DIMER generally has smaller confidence interval lengths. We also show that DIMER eliminates the probability of infinite length or enormous length confidence intervals, something that can occur in Fieller's interval. Furthermore, we study the real Healthy Eating Index-2005 (HEI-2005) data set from the NIH-AARP Study of Diet and Health, consider a weighted logistic regression model in which there are multiple subpopulations, and multiple diseases within each subpopulation. Based on this model, we present six different approaches to form the confidence intervals for the relative risks of different diseases in different subpopulations, including DIMER. The asymptotic distributions of the estimates for the log(relative risks) by the maximum likelihood and the nonparametric bootstrap method are provided. Next, the algorithms are presented to perform hypothesis tests and likelihood ratio tests to check there are significant differences between our proposed model and the other three logistic regression models or not. In addition, the adaptive lasso and an estimator with bounded constrains are described for variable selection and a novel algorithm to solve the nonlinear regression model with L1 norm penalty is proposed. The application of all those methods to the HEI-2005 data are illustrated. Additionally, we expand the linear function of nutrition components inside the logistic regression model to a nonlinear case. More than that, we consider there are some limitations from the knowledge of biology and nutrition and propose a logistic regression model involving I-spline basis functions and an algorithm to solve it. Application to the real HEI-200d data set and comparison to a logistic model with total HEI scores are also presented. Advisors/Committee Members: Carroll, Raymond (advisor), Mallick, Bani (advisor), Baladandayuthapani, Veera (committee member), Braga-Neto, Ulisses (committee member).

Subjects/Keywords: Adaptive Lasso; DIMER; Direct Integral Method for Ratios; HEI-2005; I-spline; Relative Risk; Variable Selection.

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APA (6^th Edition):

Wang, Y. (2014). Relative Risks Analysis in Nutritional Epidemiology. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/153663

Chicago Manual of Style (16^th Edition):

Wang, Yanqing. “Relative Risks Analysis in Nutritional Epidemiology.” 2014. Doctoral Dissertation, Texas A&M University. Accessed March 03, 2021. http://hdl.handle.net/1969.1/153663.

MLA Handbook (7^th Edition):

Wang, Yanqing. “Relative Risks Analysis in Nutritional Epidemiology.” 2014. Web. 03 Mar 2021.

Vancouver:

Wang Y. Relative Risks Analysis in Nutritional Epidemiology. [Internet] [Doctoral dissertation]. Texas A&M University; 2014. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1969.1/153663.

Council of Science Editors:

Wang Y. Relative Risks Analysis in Nutritional Epidemiology. [Doctoral Dissertation]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/153663

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