Digital Commons Network^™

Unique Properties Of Quadratic Solitons, G. I. Stegeman, R. Fuerst, R. Malendevich, R. Schiek, Y. Baek, I. Bauman, W. Sohler, G. Leo, G. Assanto, Ch. Bosshard, P. Günter

Faculty Bibliography 1990s

Quadratic spatial solitons exist in media with second order nonlinearities near the phase-matching condition for frequency mixing processes involving two or three waves of different frequency. Discussed here are a number of properties of these special solitons which are different from those of other spatial solitons which rely on optically induced index changes for guiding. First, the self-guiding properties of quadratic solitons are shown to have completely different origins than solitons which rely on index changes. Second, it is shown that there exists a large variety of quadratic solitons which contain two or three distinct spectral components with relative amplitudes …

Studies On Passivation Behavior Of Tungsten In Application To Chemical Mechanical Polishing, D. Tamboli, S. Seal, V. Desai, A. Maury

Faculty Bibliography 1990s

Chemical mechanical polishing (CMP) is considered to be the enabling technology for meeting the planarization requirements in < 0.35 mu m feature sized multilevel semiconductor device fabrication. CMP of tungsten is done in order to planarize and remove excess tungsten in the process to form inter-level contacts. Considerable importance is given to the role played by the passive oxide film formation on the surface during tungsten CMP. In this study, x-ray photoelectron spectroscopy (ICPS) is used to understand the oxide growth mechanism in tungsten. Tungsten wafers are polarized to different anodic potentials in static pH 4 solutions of KIO3 and H2O2, two commonly used oxidizers in CMP. XPS measurements are employed to probe the chemical and stoichiometric changes in the surface oxide films treated under these conditions. These results are then compared with the electrochemical polarization results.

Invariant Painleve Analysis And Coherent Structures Of Two Families Of Reaction-Diffusion Equations, Ugur Tanriver, S. Roy Choudhury

Faculty Bibliography 1990s

Exact closed-form coherent structures (pulses/fronts/domain walls) having the form of complicated traveling waves are constructed for two families of reaction-diffusion equations by the use of invariant Painleveacute analysis. These analytical solutions, which are derived directly from the underlying PDE's, are investigated in the light of restrictions imposed by the ODE that any traveling wave reduction of the corresponding PDE must satisfy. In particular, it is shown that the coherent structures (a) asymptotically satisfy the ODE governing traveling wave reductions, and (b) are accessible to the PDE from compact support initial conditions. The solutions are compared with each other, and with …

Quasi-Analytical Solutions For Apsidal Motion In The Three-Body Problem: Sun - Minor Planet - Jupiter, Wan Xian Wang, N. Y. Misconi

Faculty Bibliography 1990s

This paper deals with the effect of a third body on the apsidal motion of two bodies. The specific case involves a third body-planet Jupiter and the apsidal line motion of a minor planet that orbits the Sun and has its apsidal line go through the major axis of an ellipse. The third body (Jupiter) which satisfies the Langrangian solution will affect the apsidal line motion and therefore affects the ascending and descending motions of the minor planet. In this case no analytical solutions can be obtained, and therefore specific assumptions are made along with numerical solutions. For convenience, we …

Histogram Specification Of 24-Bit Color Images In The Color Difference (C-Y) Color Space, A. R. Weeks, L. J. Sartor, H. R. Myler

Faculty Bibliography 1990s

Histogram equalization and specification have been widely used to enhance information in a gray scale image, with histogram specification having the advantage of allowing the output histogram to be specified as compared to histogram equalization, which attempts to produce an output histogram that is uniform Unfortunately, expanding histogram techniques to color images is not very straightforward Since humans are sensitive to chromatic changes, care must be taken to ensure that incorrect colors are not produced. Additionally expanding the one-dimensional histogram used in gray level histogram techniques to a joint histogram (usually of three variables representing the primary colors of red, …

Nscat Normalized Radar Backscattering Coefficient Biases Using Homogenous Land Targets, Josko Zec, David G. Long, W. Linwood Jones

Faculty Bibliography 1990s

The NASA scatterometer (NSCAT) is a spaceborne radar sensor designed to measure the normalized radar backscattering coefficient sigma(o) of the Earth's surface. Over the ocean, backscatter measurements are used to infer surface wind vectors. Wind retrieval is based on a statistical relationship between short-ocean wave roughness (that causes the backscatter) and the surface wind speed and direction. For NSCAT geometry, multiple antennas are used to provide backscatter measurements at several azimuth directions to resolve wind direction ambiguities. To achieve the desired wind vector accuracy, these antenna beams must be calibrated within a few tenths of a decibel. A simple relative-calibration …

Nitrogen Incorporation And Trace Element Analysis Of Nanocrystalline Diamond Thin Films By Secondary Ion Mass Spectrometry, D. Zhou, F. A. Stevie, L. Chow, J. Mckinley, H. Gnaser, V. H. Desai

Faculty Bibliography 1990s

Nitrogen has been successfully incorporated into nanocrystalline diamond films produced by a CH4/N-2 microwave plasma-enhanced chemical vapor deposition method. High mass resolution secondary ion mass spectrometry (SIMS) characterization shows that the density of the incorporated nitrogen, monitored via CN-, can be as high as 10(21) atoms/cm(3) depending on the ratio of CH4 to N-2 in the reactant gas and on the substrate temperature used for the film preparation. SIMS depth profiles demonstrate that the incorporated nitrogen is uniform within the diamond films (about 1.5 mu m thick) except at the surfaces and at the interface between film and substrate. Furthermore, …

Crummer Graduate School, Rollins College

Text Materials of Central Florida

Rollins College catalogue with list of faculty and students and courses by department.

Rollins College Brevard Campus, Rollins College

Text Materials of Central Florida

Rollins College catalogue with list of faculty and students and courses by department.

Finding A Voice: Poetry And Performance With First Graders, Lisa Lenz Bianchi

Doctoral Dissertations

This is a qualitative research study of a ten week immersion unit in the reading, writing, and performance of poetry conducted in a first grade classroom in Closter, New Jersey during the winter of 1995. The three girls selected as case studies show the ways in which remarkably different children expand their repertoires of ways with words as speakers, readers, and writers. Danielle, a performative speaker, learns to make her tacit knowledge about performance part of her explicit frames of reference. This shift enables her to serve as a coach for peers who are less adept at crafting performative texts. …

At The Heart Of It: Middle School Writers Use Talk And Multimedia Journals To Forge A Literate Classroom Community, Julie A. Pantano

Doctoral Dissertations

In this research study, I investigated how middle school writers use talk and multi-media journals to forge a literate classroom community. Talk and multi-media journals helped middle school writers to construct and maintain a safe, caring, supportive, and respectful learning environment where transformative literacy and learning experiences could take place.

Classroom talk played a vital role in improving students' relationships in this literate classroom community and engaging them in meaningful ways with their multi-media journals. During the research study, explicit instruction in the social aspects of talk emerged as important as explicit instruction in language arts content.

The multi-media approach …

Queering/Querying Identities: The Roles Of Integrity And Belonging In Becoming Ourselves, Cari Ann Elizabeth Moorhead

Doctoral Dissertations

This dissertation presents a picture of the complexities and contradictions in the daily lives of people in the Seacoast area of New Hampshire who identify as, or are identified as, lesbian, gay, bisexual, transgender, queer, questioning and allied people (LGBTQQA). The focus of this study is the "Create Our Destiny" conference, a social change project. Philosophically, I viewed this project through a Postmodern feminist lens, and methodologically I used a grounded theory approach.

This dissertation is divided into three sections. Within section one, I present more detailed descriptions of my philosophical and methodological approaches, a description of the geographical and …

Memoirs, Movements, And Meaning: Teacher/Student Research In Freshman Composition, Carol Ann Hawkins

Doctoral Dissertations

The author interprets her memoirs as a reader and writer to describe how the movement from I to We, a process of "repositioning," shifted her perceptions from "hating school" to wanting to teach. She begins by tracing her roots as a "white," working-class woman from Cleveland (1952--1970) and ends by disclosing "what worked and what didn't work" when teaching freshman composition at the University of New Hampshire (1994--1997). She draws on feminist, ethnographic, rhetorical, and critical theory to compose "thick descriptions" of her reading, writing, and teaching life. She juxtaposes her struggles with Others', like Min-Zhan Lu, to identify, interpret, …

Domestic Visions And Shifting Identities: The Urban Novel And The Rise Of A Consumer Culture In America, 1852-1925, Nancy Helen Von Rosk

Doctoral Dissertations

Domestic Visions reexamines the tradition of the urban novel in America by reading the works of Nathaniel Hawthorne, Henry James, William Dean Howells, Theodore Dreiser, Paul Laurence Dunbar, Edith Wharton, Abraham Cahan and Anzia Yezierska within the historical and cultural contexts of an evolving urban consumer culture. Bringing together not only a wide range of canonical and non-canonical texts, but also an analysis of America's shifting domestic ideals over the last half of the nineteenth and early twentieth centuries, this study traces the impact of a new spectacular urban public culture on both the private realm and those who are …

Thinking Through Performance: Children Make Sense Of Characters And Social Relationships Through A Gesture-Based Theatre Convention (Tableau), Georgia Patricia Wilson

Doctoral Dissertations

This inquiry considers a gesture-based theatre convention called tableau as used by first and second graders during language arts instruction. I argue that tableau acts as a medium of thinking, used to make sense of literary text and of social relationships. Tableau is largely non-language-based; it augments instructional practices that are primarily language-based. Tableau reveals sophisticated understandings children cannot yet put into language. As such, tableau offers educators a means to cast children as capable analysts of literature.

Qualitatively oriented, this inquiry uses instrumental case study methods of observation and data analysis coupled with a concurrent conceptual study of the …

Motherwork, Artwork: The Mother/Artist In Fiction By Parton, Phelps, Chopin, Woolf, Drabble, And Walker, Nancy Hoyt Lecourt

Doctoral Dissertations

This study asks the question, What happens to a practicing (fictional) mother who also tries to be a practicing artist? How do literary texts represent such people? How do they represent the relationship between material and artistic work? The primary works studied are Sarah Parton's Ruth Hall, (1855), Elizabeth Stuart Phelps' The Story of Avis (1877), Kate Chopin's The Awakening (1899), Virginia Woolf's To the Lighthouse (1927), and Margaret Drabble's The Millstone (1965). The conclusion focuses on Alice Walker's short story, "Everyday Use."

Mother-artists finds themselves on the "wrong" side of the nature/culture binary, where ideologies about "true womanhood" and …

Confronting The War Machine: Draft Resistance During The Vietnam War, Michael Stewart Foley

Doctoral Dissertations

This dissertation recovers the history of the draft resistance movement in Boston during the Vietnam War. It is a blend of social, political, and cultural history that seeks not merely to assert the importance of draft resistance to our understanding of the antiwar movement and the Vietnam War era, but also to capture the experience of draft resisters and their supporters.

It is an actor-oriented history. The sources used include the personal private manuscript collections of participants, court records, underground newspapers, a 1997 survey administered to 310 former resisters and draft resistance activists (185 responded), and interviews with more than …

Using Writing Composition Pedagogy In An Introductory Teacher Education Practicum To Learn About The Motivations, Journeys, And Understandings Of Preservice Teachers, Daniel Archer Rothermel

Doctoral Dissertations

Over the last third of the twentieth century, best practice in America's public schools has evolved from a focus on the teacher's behavior in presenting material to a focus on whether and how students learn. Over that same period, writing composition pedagogy has focused on the emphasis on students' growth and development as they think reflectively, write drafts, and self-monitor. Integrating writing composition pedagogy in the education of preservice teachers, I use Exploring Teaching, a learner-centered introductory course in teacher education that I teach, as the specific context of my inquiry. As my students write Dear Classmates Letters, portfolio reflections, …

Language's "Bliss Of Unfolding" In And Through History, Autobiography And Myth: The Poetry Of Rita Dove, Carol Keyes

Doctoral Dissertations

This dissertation focuses on the first five books of poetry published by the American poet Rita Dove: The Yellow House on the Corner (1980), Museum (1983), Thomas and Beulah (1986; awarded the Pulitzer Prize in 1987), Grace Notes (1989), and Mother Love (1995). It situates her work within the whole field of American poetic discourse. Dove's relationship to myriad strands of American ars poetica traditions arises out of patterns of amplification and negotiation worked out in Dove's poetry in relation to a wide range of such traditions. Thus, the study's methodology proceeds from the poet T. S. Eliot's dictum that …

Learning To Read Music Cooperatively In A Choral Setting: A Case Study, Andrew Inzenga

Doctoral Dissertations

Two volunteer cooperative teams of ninth grade girls were studied for six months to discover whether and how they learned to read music. The two teams represented novice students and students who had received private instruction. Study teams represented the population of the freshman Girls Chorus. Teams met regularly during daily chorus rehearsals, with only occasional help from the director. These meetings were analyzed through video tape recordings to observe if students employed traditional teaching and learning strategies to assist each other in learning. It was determined that team members regularly use certain teaching and learning strategies to assist in …

"The Law Will Make You Smart": Legal Consciousness, Rights Rhetoric, And African American Identity Formation In Massachusetts, 1641-1855, Scott Hancock

Doctoral Dissertations

In 1834, one of the informal leaders of Boston's black community rebuked a black defendant in court, declaring "the law will make you smart." This dissertation uncovers how African Americans in Massachusetts did indeed become 'smart' through an ongoing engagement with the law for over two hundred years. While the law could be oppressive, the accessibility of the legal system in Massachusetts enabled black women and men, slave and free, to learn to use the law in efforts to exercise some control over their daily lives. In the deteriorating racial atmosphere during the first half of the nineteenth century, the …

Class In Seventeenth-Century British Drama By Women, Erika Mae Olbricht

Doctoral Dissertations

This dissertation argues that seventeenth-century drama by women should be analyzed as a public discursive practice rather than as privatized "closet drama." This study focuses on class in order to delineate the texts' participation in public modes of representation and offers post-marxist readings as an alternative to the gynocritical/biographical model that dominates criticism on literature by women of the early modern period.

Chapter one of this dissertation problematizes separate spheres ideology, lest texts by women become separated from the economic sites that inform them. I consider the ideological importance of generic conventions, arguing that conventions of tragedy and comedy are …

Monograph Distribution Letter (Participants) For Pew Symposium In Learning And Technology In Roanoke, Carol Twigg

Monograph Distribution for Pew Symposium in Roanoke

No abstract provided.

Monograph Distribution Letter For Pew Symposium In Learning And Technology In Roanoke, Carol Twigg

Monograph Distribution for Pew Symposium in Roanoke

No abstract provided.

Invite List For Pew Symposium In Learning And Technology In Roanoke, Carol Twigg

Invitations for Pew Symposium in Roanoke

No abstract provided.

Monograph Distribution Letter (Russ And Michele) For Pew Symposium In Learning And Technology In Roanoke, Carol Twigg

Monograph Distribution for Pew Symposium in Roanoke

No abstract provided.

Invite Letter For Pew Symposium In Learning And Technology In Roanoke, Carol Twigg

Invitations for Pew Symposium in Roanoke

No abstract provided.

Questions For Case Study Presenters For Pew Symposium In Learning And Technology In Roanoke, Carol Twigg

Pre-Symposium Materials for Roanoke

No abstract provided.

Pre-Symposium Paper For Pew Symposium In Learning And Technology In Roanoke, Carol Twigg

Pre-Symposium Materials for Roanoke

No abstract provided.

University Of Wisconsin Madison Case Study For Pew Symposium In Learning And Technology In Roanoke, Carol Twigg

Pre-Symposium Materials for Roanoke

No abstract provided.