scholarly journals Asymmetric transmission in planar chiral split-ring metamaterials: Microscopic Lorentz-theory approach

2012 ◽  
Vol 86 (7) ◽  
Author(s):  
Andrey V. Novitsky ◽  
Vladimir M. Galynsky ◽  
Sergei V. Zhukovsky
Keyword(s):  
Theory Approach ◽  
Split Ring ◽  
Asymmetric Transmission ◽  
Lorentz Theory

Asymmetric transmission with double bands based on chiral twisted double-split-ring resonators

2014 ◽  
Vol 323 ◽  
pp. 19-22 ◽  
Author(s):  
Dao-Ya Liu ◽  
Xiao-Min Zhai ◽  
Li-Fang Yao ◽  
Jian-Feng Dong
Keyword(s):  
Ring Resonators ◽  
Split Ring ◽  
Asymmetric Transmission ◽  
Split Ring Resonators

Ab initio band theory approach to electron energy loss near edge structures

1988 ◽  
Vol 46 ◽  
pp. 506-507
Author(s):  
Xudong Weng ◽  
O.F. Sankey ◽  
Peter Rez
Keyword(s):  
Ab Initio ◽  
Local Density ◽  
Interpolation Method ◽  
Atomic Orbital ◽  
Plane Waves ◽  
Large Set ◽  
Theory Approach ◽  
Band Theory ◽  
Atomic Orbitals ◽  
Pseudopotential Calculations

Single electron band structure techniques have been applied successfully to the interpretation of the near edge structures of metals and other materials. Among various band theories, the linear combination of atomic orbital (LCAO) method is especially simple and interpretable. The commonly used empirical LCAO method is mainly an interpolation method, where the energies and wave functions of atomic orbitals are adjusted in order to fit experimental or more accurately determined electron states. To achieve better accuracy, the size of calculation has to be expanded, for example, to include excited states and more-distant-neighboring atoms. This tends to sacrifice the simplicity and interpretability of the method.In this paper. we adopt an ab initio scheme which incorporates the conceptual advantage of the LCAO method with the accuracy of ab initio pseudopotential calculations. The so called pscudo-atomic-orbitals (PAO's), computed from a free atom within the local-density approximation and the pseudopotential approximation, are used as the basis of expansion, replacing the usually very large set of plane waves in the conventional pseudopotential method. These PAO's however, do not consist of a rigorously complete set of orthonormal states.

Perceptions of a Collaborative Professional Learning Program: Seeing the “Bigger Picture”

2020 ◽  
Vol 5 (1) ◽  
pp. 290-303
Author(s):  
P. Charlie Buckley ◽  
Kimberly A. Murza ◽  
Tami Cassel
Keyword(s):  
Data Analysis ◽  
Professional Learning ◽  
Social Communication ◽  
Special Educators ◽  
Service Providers ◽  
Integrative Approach ◽  
Theory Approach ◽  
Learning Program ◽  
Speech Language Pathologists ◽  
Related Service

Purpose The purpose of this study was to explore the perceptions of special education practitioners (i.e., speech-language pathologists, special educators, para-educators, and other related service providers) on their role as communication partners after participation in the Social Communication and Engagement Triad (Buckley et al., 2015 ) yearlong professional learning program. Method A qualitative approach using interviews and purposeful sampling was used. A total of 22 participants who completed participation in either Year 1 or Year 2 of the program were interviewed. Participants were speech-language pathologists, special educators, para-educators, and other related service providers. Using a grounded theory approach (Glaser & Strauss, 1967 ) to data analysis, open, axial, and selective coding procedures were followed. Results Three themes emerged from the data analysis and included engagement as the goal, role as a communication partner, and importance of collaboration. Conclusions Findings supported the notion that educators see the value of an integrative approach to service delivery, supporting students' social communication and engagement across the school day but also recognizing the challenges they face in making this a reality.

Processing Loci of the BRCA Gist Intelligent Tutor: A Fuzzy-Trace Theory Approach

2014 ◽  
Author(s):  
Christopher Wolfe ◽  
Valerie Reyna ◽  
Priscila G. Brust-Renck ◽  
Colin L. Widmer ◽  
Elizabeth M. Cedillos ◽  
...  
Keyword(s):  
Theory Approach ◽  
Trace Theory ◽  
Fuzzy Trace Theory ◽  
Intelligent Tutor
Sign in / Sign up

Export Citation Format

Share Document