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You searched for +publisher:"U of Massachusetts : PhD" +contributor:("Nathaniel Whitaker"). Showing records 1 – 3 of 3 total matches.

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1. Law, Kody John Hoffman. Existence, Stability, and Dynamics of Solitary Waves in Nonlinear Schroedinger Models with Periodic Potentials.

Degree: PhD, Mathematics, 2010, U of Massachusetts : PhD

The focus of this dissertation is the existence, stability, and resulting dynamical evolution of localized stationary solutions to Nonlinear Schr¨odinger (NLS) equations with periodic confining potentials in 2(+1) dimensions. I will make predictions about these properties based on a discrete lattice model of coupled ordinary differential equations with the appropriate symmetry. The latter has been justified by Wannier function expansions in a so-called tight-binding approximation in the appropriate parametric regime. Numerical results for the full 2(+1)-D continuum model will be qualitatively compared with discrete model predictions as well as with nonlinear optics experiments in optically induced photonic lattices in photorefractive crystals. The predictions are also relevant for BECs (Bose-Einstein Condensates) in optical lattices. Advisors/Committee Members: Panayotis G. Kevrekidis, Nathaniel Whitaker, Hans Johnston.

Subjects/Keywords: DNLS; NLS; Non-square lattices; Nonlinear waves; Photonic lattices; Saturable nonlinearity; Mathematics; Statistics and Probability

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APA (6th Edition):

Law, K. J. H. (2010). Existence, Stability, and Dynamics of Solitary Waves in Nonlinear Schroedinger Models with Periodic Potentials. (Doctoral Dissertation). U of Massachusetts : PhD. Retrieved from https://scholarworks.umass.edu/open_access_dissertations/179

Chicago Manual of Style (16th Edition):

Law, Kody John Hoffman. “Existence, Stability, and Dynamics of Solitary Waves in Nonlinear Schroedinger Models with Periodic Potentials.” 2010. Doctoral Dissertation, U of Massachusetts : PhD. Accessed January 17, 2020. https://scholarworks.umass.edu/open_access_dissertations/179.

MLA Handbook (7th Edition):

Law, Kody John Hoffman. “Existence, Stability, and Dynamics of Solitary Waves in Nonlinear Schroedinger Models with Periodic Potentials.” 2010. Web. 17 Jan 2020.

Vancouver:

Law KJH. Existence, Stability, and Dynamics of Solitary Waves in Nonlinear Schroedinger Models with Periodic Potentials. [Internet] [Doctoral dissertation]. U of Massachusetts : PhD; 2010. [cited 2020 Jan 17]. Available from: https://scholarworks.umass.edu/open_access_dissertations/179.

Council of Science Editors:

Law KJH. Existence, Stability, and Dynamics of Solitary Waves in Nonlinear Schroedinger Models with Periodic Potentials. [Doctoral Dissertation]. U of Massachusetts : PhD; 2010. Available from: https://scholarworks.umass.edu/open_access_dissertations/179

2. Guillory, Laurice Ann. An Exploratory Study of Students and Teachers Attitudes Toward Three Types of Bullying: Physical, Verbal and Social Exclusion.

Degree: PhD, Education (also CAGS), 2013, U of Massachusetts : PhD

The primary purpose of this study is to explore student and teacher attitudes toward three types of bullying (physical, verbal and social-exclusion) in elementary schools. The secondary purpose of this study was to explore the role of gender and grade in attitudes towards the three types of bullying. An ANOVA design was used to investigate the research questions. The population consisted of third and fifth grade students and their classroom teachers in mid to large inner city school districts. The data sets are attitudes, i.e. seriousness and empathy toward three types of bullying (physical, verbal and social exclusion) and a personal data questionnaire was used to gather demographic information and additional information about the participants. Six vignettes were used to assess student judgment about seriousness of the incident and empathy for the victim. The ANOVA for the seriousness of the incident revealed significant differences with regard to grade level but not gender. There was no interaction between grade level and vignette and gender and vignette. With regard to empathy, there were significant differences with regard to gender and grade level. Again, there was no interaction between grade level and vignette and gender and vignette. A post hoc analysis revealed significant differences between the vignettes. Students in the study identified hitting and the threat of being hit as the most serious bullying incidents Advisors/Committee Members: Ernest Washington, Alfred Karlson, Nathaniel Whitaker.

Subjects/Keywords: Education

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

APA (6th Edition):

Guillory, L. A. (2013). An Exploratory Study of Students and Teachers Attitudes Toward Three Types of Bullying: Physical, Verbal and Social Exclusion. (Doctoral Dissertation). U of Massachusetts : PhD. Retrieved from https://scholarworks.umass.edu/open_access_dissertations/742

Chicago Manual of Style (16th Edition):

Guillory, Laurice Ann. “An Exploratory Study of Students and Teachers Attitudes Toward Three Types of Bullying: Physical, Verbal and Social Exclusion.” 2013. Doctoral Dissertation, U of Massachusetts : PhD. Accessed January 17, 2020. https://scholarworks.umass.edu/open_access_dissertations/742.

MLA Handbook (7th Edition):

Guillory, Laurice Ann. “An Exploratory Study of Students and Teachers Attitudes Toward Three Types of Bullying: Physical, Verbal and Social Exclusion.” 2013. Web. 17 Jan 2020.

Vancouver:

Guillory LA. An Exploratory Study of Students and Teachers Attitudes Toward Three Types of Bullying: Physical, Verbal and Social Exclusion. [Internet] [Doctoral dissertation]. U of Massachusetts : PhD; 2013. [cited 2020 Jan 17]. Available from: https://scholarworks.umass.edu/open_access_dissertations/742.

Council of Science Editors:

Guillory LA. An Exploratory Study of Students and Teachers Attitudes Toward Three Types of Bullying: Physical, Verbal and Social Exclusion. [Doctoral Dissertation]. U of Massachusetts : PhD; 2013. Available from: https://scholarworks.umass.edu/open_access_dissertations/742

3. Guillory Bryant, Marsha Marie. A Study of Pre-Service Teachers: Is it Really Mathematics Anxiety?.

Degree: Doctor of Education (EdD), Education (also CAGS), 2009, U of Massachusetts : PhD

This research study was motivated by a hypothesis, generated on the basis of formal and informal observations, personal and professional experiences, discussions with prospective teachers and a pilot study conducted by this author; that pre-service teachers have a high level of mathematics anxiety and negative attitudes about mathematics. The primary purpose of this research was to examine the relationship between mathematics anxiety and pre-service teachers. The secondary purposes of this study were to examine the relationship between anxiety and performance and to examine the relationship between math anxiety, test anxiety, and stereotype threat. A quantitative experimental research design was used to investigate the research questions. The population consisted of prospective teachers at colleges and universities in Louisiana. The sets of data are mathematics anxiety of prospective teachers, a test anxiety inventory and a mathematics performance task. A personal data questionnaire was used to gather demographic information and attitudinal information about the participants. The implications of this study for elementary teacher education programs point to increased attention on the mathematics anxiety of pre-service teachers. This process is two-fold. One, it is recommended that pre-service teachers be made aware of their mathematics anxiety level and their attitudes about mathematics and two, it is recommended that teacher education programs acknowledge and address the importance of these affective variables and their role in pedagogy. Advisors/Committee Members: Ernest D. Washington, Portia C. Elliott, Nathaniel Whitaker.

Subjects/Keywords: Attitudes towards mathematics; Math anxiety; Pre-service teachers; Stereotype threat; Teacher education; Test anxiety; Education; Educational Psychology; Teacher Education and Professional Development

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

APA (6th Edition):

Guillory Bryant, M. M. (2009). A Study of Pre-Service Teachers: Is it Really Mathematics Anxiety?. (Doctoral Dissertation). U of Massachusetts : PhD. Retrieved from https://scholarworks.umass.edu/open_access_dissertations/43

Chicago Manual of Style (16th Edition):

Guillory Bryant, Marsha Marie. “A Study of Pre-Service Teachers: Is it Really Mathematics Anxiety?.” 2009. Doctoral Dissertation, U of Massachusetts : PhD. Accessed January 17, 2020. https://scholarworks.umass.edu/open_access_dissertations/43.

MLA Handbook (7th Edition):

Guillory Bryant, Marsha Marie. “A Study of Pre-Service Teachers: Is it Really Mathematics Anxiety?.” 2009. Web. 17 Jan 2020.

Vancouver:

Guillory Bryant MM. A Study of Pre-Service Teachers: Is it Really Mathematics Anxiety?. [Internet] [Doctoral dissertation]. U of Massachusetts : PhD; 2009. [cited 2020 Jan 17]. Available from: https://scholarworks.umass.edu/open_access_dissertations/43.

Council of Science Editors:

Guillory Bryant MM. A Study of Pre-Service Teachers: Is it Really Mathematics Anxiety?. [Doctoral Dissertation]. U of Massachusetts : PhD; 2009. Available from: https://scholarworks.umass.edu/open_access_dissertations/43

.