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Physical Sciences and Mathematics Commons™

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Georgia State University

Series

2009

Articles 1 - 6 of 6

Full-Text Articles in Physical Sciences and Mathematics

Mathematics Teacher Educators As Cultural Workers: A Dare To Those Who Dare To Teach (Urban?) Teachers, David W. Stinson Dec 2009

Mathematics Teacher Educators As Cultural Workers: A Dare To Those Who Dare To Teach (Urban?) Teachers, David W. Stinson

Middle-Secondary Education and Instructional Technology Faculty Publications

In his editorial, the author challenges urban mathematics educators to institute as the primary goal for the community of mathematics educators the cultural transformation of the discipline of mathematics from the psychologically brutalizing discipline of stratification into the psychologically humanizing discipline of freedom.

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The Effect Of Wavelet Families On Watermarking, Evelyn Brannock, Michael Weeks, Robert W. Harrison Jan 2009

The Effect Of Wavelet Families On Watermarking, Evelyn Brannock, Michael Weeks, Robert W. Harrison

Computer Science Faculty Publications

With the advance of technologies such as the Internet, Wi-Fi Internet availability and mobile access, it is becoming harder than ever to safeguard intellectual property in a digital form. Digital watermarking is a steganographic technique that is used to protect creative content. Copyrighted work can be accessed from many different computing platforms; the same image can exist on a handheld personal digital assistant, as well as a laptop and desktop server computer. For those who want to pirate, it is simple to copy, modify and redistribute digital media. Because this impacts business profits adversely, this is a highly researched field …

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Slc30a3 (Znt3) Oligomerization By Dityrosine Bonds Regulates Its Subcellular Localization And Metal Transport Capacity, Gloria Salazar, Juan M. Falcon-Perez, Robert W. Harrison, Victor Faundez Jan 2009

Slc30a3 (Znt3) Oligomerization By Dityrosine Bonds Regulates Its Subcellular Localization And Metal Transport Capacity, Gloria Salazar, Juan M. Falcon-Perez, Robert W. Harrison, Victor Faundez

Computer Science Faculty Publications

Non-covalent and covalent homo-oligomerization of membrane proteins regulates their subcellular localization and function. Here, we described a novel oligomerization mechanism affecting solute carrier family 30 member 3/zinc transporter 3 (SLC30A3/ZnT3). Oligomerization was mediated by intermolecular covalent dityrosine bonds. Using mutagenized ZnT3 expressed in PC12 cells, we identified two critical tyrosine residues necessary for dityrosine-mediated ZnT3 oligomerization. ZnT3 carrying the Y372F mutation prevented ZnT3 oligomerization, decreased ZnT3 targeting to synaptic-like microvesicles (SLMVs), and decreased resistance to zinc toxicity. Strikingly, ZnT3 harboring the Y357F mutation behaved as a ‘‘gain-of-function’’ mutant as it displayed increased ZnT3 oligomerization, targeting to SLMVs, and increased resistance …

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Teachers Reflecting Differently: Deconstructing The Discursive Teacher/Student Binary, David W. Stinson, Ginny C. Powell Jan 2009

Teachers Reflecting Differently: Deconstructing The Discursive Teacher/Student Binary, David W. Stinson, Ginny C. Powell

Middle-Secondary Education and Instructional Technology Faculty Publications

This session explores the ways that practicing teachers came to reflect differently regarding the discursive teacher/student binary during a graduate-level course entitled “Mathematics Education within the Postmodern.” Using Dewey’s concept of reflective thinking, as well as Foucault’s discourse and Derrida’s deconstruction, we show how the course provided new suggestions for the students as they continued their journey of becoming teachers. Through interweaving comments written by the students with concepts borrowed from postmodern philosophers and theorists, we illustrate how the teachers began to understand that teachers and students might indeed be described differently in the postmodern.

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The Proliferation Of Theoretical Paradigms Quandary: How One Novice Researcher Used Eclecticism As A Solution, David W. Stinson Jan 2009

The Proliferation Of Theoretical Paradigms Quandary: How One Novice Researcher Used Eclecticism As A Solution, David W. Stinson

Middle-Secondary Education and Instructional Technology Faculty Publications

When a doctoral student plans to conduct qualitative education research, the aspect of the dissertation that often becomes problematic is determining which theoretical paradigm(s) might frame the study. In this article, the author discusses how he resolved the quandary through eclecticism. The author begins by describing briefly the purpose of his dissertation study, providing a justification for eclecticism in the selection of theories. He follows with a description of the three theories— poststructural theory, critical race theory, and critical theory—that framed his study and discusses briefly the methodology employed. The author concludes with a discussion of likely objections of his …

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Zpc Matrices And Zero Cycles, Marina Arav, Frank Hall, Zhongshan Li, Bhaskara Rao Jan 2009

Zpc Matrices And Zero Cycles, Marina Arav, Frank Hall, Zhongshan Li, Bhaskara Rao

Mathematics and Statistics Faculty Publications

Let H be an m x n real matrix and let Zi be the set of column indices of the zero entries of row i of H. Then the conditions |Zk ∩(Uk-1 i=1 Zi)| ≤ 1 for all k (2 ≤ k ≤ m) are called the (row) Zero Position Conditions (ZPCs). If H satisfies the ZPC, then H is said to be a (row) ZPC matrix. If HT satisfies the ZPC, then H is said to be a column ZPC matrix. The real matrix H is said to …

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