Digital Commons Network^™

Marine Ice Modification Of Fringing Ice Shelf Flow, Christina L. Hulbe, R. Johnston, Ian R. Joughin, Ted A. Scambos

Geology Faculty Publications and Presentations

Locally derived ice is often observed to fill through-cutting rifts and uneven fronts in ice shelves. That ice may nucleate as fast ice at the shelf front, by growth at the sea surface within rifts, or by basal accretion. Here, we investigate the role of such ice in the flow of the Brunt Ice Shelf and adjacent Stancomb-Wills ice tongue, along the Caird Coast of Antarctica. Much of the shelf system is severely rifted, with locally derived ice filling the space between rift walls and around ice rafts. A series of numerical experiments that account for thermal properties of the …

Methods For Correcting Topographically Induced Radiometric Distortion On Landsat Thematic Mapper Images For Land Cover Classification, David Michael Rosen

Geography Masters Research Papers

Satellite imagery is commonly used to study land-use, land-cover change in mountainous areas. Classification of land-cover types is particularly difficult in this type of terrain because topography affects the spectral response of surface features. Several techniques have been developed to help compensate for this topographic effect and to increase classification accuracy.

The purpose of this study is to compare topographic correction methods to determine which produces the most accurate results. Method 1 does not use any topographic correction, serving as a control. Method 2 is based on the Lambertian model, and uses topographical data as variables in an equation. Method …

Agriculture, Aesthetic Appreciation And The Worlds Of Nature, Pauline Von Bonsdorff

Contemporary Aesthetics (Journal Archive)

Agriculture has received relatively little attention in environmental aesthetics, given its importance culturally for the physical sustenance of societies and from an eco-system perspective. In this article I take some steps towards developing a life-world approach to the agricultural landscape, where the intimate and long-term relationship between farmer and land is understood as having the potential for being a norm rather than the opposite of an aesthetic appreciation of landscape. This requires a narrative understanding of landscape, where culture and nature are seen as plural and relative to each other. I claim that the aesthetic competence of the farmer is …

Does Sad Music Make One Sad? An Ethnographic Perspective, Peter Manuel

Contemporary Aesthetics (Journal Archive)

The question of the presence and role of negative emotions in the experience of music - Does sad music make one sad? - has been recognized as a key to understanding much musical experience, especially in terms of the apprehension and expressive power of specifically formal features of music. One set of scholars, sometimes loosely labeled "emotivists," has argued that negative emotional responses do play a central role in the apprehension of much music, that is, that actual sadness is a natural, intentional and essential response to sad music. Advocates of this view base their arguments in large part on …

Identification Of Recql1 As A Holliday Junction Processing Enzyme In Human Cell Lines, Gary Leroy, Robert Carroll, Saw Kyin, Masayuki Seki, Michael D. Cole

Dartmouth Scholarship

Homologous recombination provides an effective way to repair DNA double-strand breaks (DSBs) and is required for genetic recombination. During the process of homologous recombination, a heteroduplex DNA structure, or a ‘Holliday junction’ (HJ), is formed. The movement, or branch migration, of this junction is necessary for recombination to proceed correctly. In prokaryotes, the RecQ protein or the RuvA/RuvB protein complex can promote ATP-dependent branch migration of Holliday junctions. Much less is known about the processing of Holliday junctions in eukaryotes. Here, we identify RecQL1 as a predominant ATP-dependent, HJ branch migrator present in human nuclear extracts. A reduction in the …

Silencing Of Retrotransposons In Dictyostelium By Dna Methylation And Rnai, Markus Kuhlmann, Branimira E. Borisova, Markus Kaller, Pontus Larsson, Dirk Stach, Jianbo Na, Ludwig Eichinger, Frank Lyko, Victor Ambros, Fredrik Soderbom, Christian Hammann, Wolfgang Nellen

Dartmouth Scholarship

We have identified a DNA methyltransferase of the Dnmt2 family in Dictyostelium that was denominated DnmA. Expression of the dnmA gene is downregulated during the developmental cycle. Overall DNA methylation in Dictyostelium is ∼0.2% of the cytosine residues, which indicates its restriction to a limited set of genomic loci. Bisulfite sequencing of specific sites revealed that DnmA is responsible for methylation of mostly asymmetric C-residues in the retrotransposons DIRS-1 and Skipper. Disruption of the gene resulted in a loss of methylation and in increased transcription and mobilization of Skipper. Skipper transcription was also upregulated in strains that had genes encoding …

Infrared Response Of Charge-Coupled Devices, Matthias Loch, Ralf Widenhorn, Erik Bodegom

Physics Faculty Publications and Presentations

With a band gap of silicon of 1.1eV, the largest wavelength that can excite electrons from the valence to the conduction band is roughly 1100nm. As a consequence, in, for instance, a charge-coupled device, the quantum efficiency (QE) for wavelengths larger than 1100nm is assumed to be zero. We found that there is a response at those longer wavelengths and that the response decreases with increasing wavelength. The QE increases with increasing chip temperature which suggests a thermally activated process. Impurities in the silicon provide the energy levels in the band gap, from which electrons can be excited either thermally …

Making Sense Of Nanocrystal Lattice Fringes, P. Fraundorf, Wentao Qin, Peter Moeck, Eric Mandell

Physics Faculty Publications and Presentations

The orientation dependence of thin-crystal lattice fringes can be gracefully quantified using fringe-visibility maps, a direct-space analog of Kikuchi maps [Nishikawa and Kikuchi, Nature (London) 121, 1019 (1928)]. As in navigation of reciprocal space with the aid of Kikuchi lines, fringe-visibility maps facilitate acquisition of crystallographic information from lattice images. In particular, these maps can help researchers to determine the three-dimensional lattice of individual nanocrystals, to 'fringe-fingerprint' collections of randomly oriented particles, and to measure local specimen thickness with only a modest tilt. Since the number of fringes in an image increases with maximum spatial-frequency squared, these strategies (with help …

Spoonwood, Ernest Hebert

Dartmouth Scholarship

Ernest Hebert's series of novels set in Darby, New Hampshire, has been hailed by the Boston Globe as "one of the most interesting accomplishments of contemporary American fiction . . . [a series] into which the texture of class is as skillfully woven as it is in Faulkner's Yoknapatawpha County." After almost fifteen years, Hebert has returned to this rich literary landscape for a new novel of the changing economic and social character of New England. Hebert's previous Darby novel, Live Free or Die, recounted the ill-fated love between Freddie Elman, son of the town trash collector, and Lilith Salmon, …

Arsenite Regulates Cystic Fibrosis Transmem­Brane Conductance Regulator And P-Glycoprotein: Evidence Of Pathway Independence, Rangan Maitra, Joshua Hamilton

Dartmouth Scholarship

In the past, people have argued for and against the theory of reciprocal regulation of the Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) and P-glycoprotein (Pgp). Data have indicated that this may occur in vitro during drug-induced selection of cells, and in vivo during development. Much of this debate has been caused by a severe lack of mechanistic details involved in such regulation. Our past data indicate that certain Pgp modulators can affect CFTR expression and function. The goal of this study was to investigate the effects of trivalent arsenic (arsenite), a known transcriptional activator of Pgp, on CFTR expression. In …

Spectroscopy Of Kiss Emission-Line Galaxy Candidates. Iii. A Second Set Of Mdm Observations, Anna Jangren, Gary Wegner, John J. Salzer, Jessica K. Werk, Caryl Gronwall

Dartmouth Scholarship

Spectroscopic observations for 315 emission-line galaxy (ELG) candidates from the KPNO International Spectroscopic Survey (KISS) have been obtained using the MDM Observatory 2.4 m telescope on Kitt Peak. KISS is a wide-field objective-prism survey for extragalactic emission-line objects that has cataloged over 2200 ELG candidates to date. Spectroscopic follow-up observations are being carried out to study the characteristics of the survey objects. The observational data presented here include redshifts, reddening estimates, line equivalent widths, Hα line fluxes, and emission-line ratios. The galaxies have been classified based on their emission-line characteristics. The procedure for selecting the ELG candidates in KISS is …

Synthetic Studies In Phytochrome Chemistry, Peter A. Jacobi, Imad Odeh, Subhas Buddhu, Guolin Cai, Sundaramoorthi Rajeswari, Douglas Fry, Wanjun Zheng, Robert W. Desimone, Jiasheng Guo, Lisa D. Coutts, Sheila I. Hauck, Sam H. Leung, Indranath Ghosh, Douglas Pippin

Dartmouth Scholarship

An account is given of the author’s several approaches to the synthesis of the parent chromophore of phytochrome (1), a protein-bound linear tetrapyrrole derivative that controls photomorphogenesis in higher plants. These studies culminated in enantioselective syntheses of both (2R)- and (2S)-phytochromobilin (4), as well as several ¹³C-labeled derivatives designed to probe the site of Z,E-isomerization during photoexcitation. When reacted in vitro, synthetic 2R-4 and recombinant-derived phytochrome apoprotein N-C produced a protein-bound chromophore with identical difference spectra to naturally occurring 1.

Development Of A Ctd System For Environmental Measurements Using Novel Pcb Mems Fabrication Techniques, Heather Allison Broadbent

USF Tampa Graduate Theses and Dissertations

The development of environmental continuous monitoring of physicochemical parameters via portable small and inexpensive instrumentation is an active field of research as it presents distinct challenges. The development of a PCB MEMS-based inexpensive CTD system intended for the measurement of environmental parameters in natural waters, is presented in this work. Novel PCB MEMS fabrication techniques have also been developed to construct the conductivity and temperature transducers. The design and fabrication processes are based on PCB MEMS technology that combines Cu-clad liquid crystal polymer (LCP) thin-film material with a direct write photolithography tool, chemical etching and metallization of layers of electroless …

The Impact Of Privatization Of Primary Care Programs In Large County Health Departments In Florida, Arlesia Lynn Brock

USF Tampa Graduate Theses and Dissertations

Since the mid-1970s, top managers, politicians, and officials in both public and private institutions have promoted contracting-out services (privatization) as a means of increasing efficiency, flexibility, and quality. The privatization trend has occurred in many public sector organizations particularly in city services and prisons. Public health services are not immune to this trend. Today many county health departments have contracted the provision of public health services like womens health, primary care, and laboratory services. However, very few studies have analyzed the impact of these privatizations on cost, access, and health outcomes. Proponents favoring the private provision of these services argue …

Estimation Of Subject Specific Icp Dynamic Models Using Prospective Clinical Data, Wayne W. Wakeland, Joe Fusion, B. Goldstein

Complex Systems Faculty Publications and Presentations

We used a prospective clinical trial to generate physiologic data to create subject-specific in silico (computer simulation) models of intracranial pressure dynamics in children with severe traumatic brain injury. The trial included a physiologic challenge protocol with changes in head-of-bed elevation and minute ventilation, applied over multiple iterations to three subjects. Physiologic signals (electrocardiogram, respiration, arterial blood pressure, intracranial pressure [ICP], oxygen saturation) were recorded continuously, along with clinical annotations indicating the precise timing of physiologic challenges. Several parameters within the model of ICP dynamics were estimated for each subject based on the ICP response to the challenges. Estimation was …

Dynamic Systems And Organizational Decision-Making Processes In Nonprofits, Jennifer S. Tucker, Jennifer C. Cullen, Robert S. Sinclair, Wayne Wakeland

Complex Systems Faculty Publications and Presentations

Social purpose organizations (SPOs) are nonprofit organizations that fulfill their social missions by seeking revenue from traditional business activities. SPOs often face difficulties attracting and retaining organizational members with the necessary mix of social and business skills and values. When coupled with resource limitations and an unstable environment, these issues create serious strategic challenges for leaders of small SPOs. In the present article, the authors describe several systems thinking concepts that may enable leaders to understand and therefore more effectively contend with the challenges of the SPO context. The authors also present a case study demonstrating the utility of systems …

University Studies Annual Assessment 2004-2005, Portland State University. University Studies Program

University Studies Annual Assessment Reports

No abstract provided.

Incorporating Science Into The Environmental Policy Process: A Case Study From Washington State, Tessa B. Francis, Kara A. Whittaker, Vivek Shandas, April V. Mills, Jessica K. Graybill

Urban Studies and Planning Faculty Publications and Presentations

The incorporation of science into environmental policy is a key concern at many levels of decision making. Various institutions have sought to standardize the protection of natural resources by requiring that decisions be made based on the "best available science." Here we present empirical data describing the incorporation of best available science in the land-use policy process on a local scale. Results are based on interviews with planners and others who conducted scientific reviews associated with a Washington State Growth Management Act amendment that requires the inclusion of best available science in protecting critical areas. Our results show that jurisdictions …

Are Supertasters Good Candidates For Being Human Ideal Critics?, Francis Raven

Contemporary Aesthetics (Journal Archive)

This paper asks whether supertasters possess the criteria for ideal critics that David Hume outlines in his essay "Of the Standard of Taste." This might seem like a straightforward question, but there is a paradox involving supertasters: They possess more tastebuds than normal tasters, making it reasonable to assume they fulfill the requirements for Humean ideal critics with respect to taste. However, because they have more tastebuds, supertasters find certain foods bitter that normal tasters do not and thus negatively evaluate them. This might indicate that supertasters actually make poor candidates for being Humean ideal critics with respect to taste. …

Avant-Garde Or Pré-Jugé?, Sinead Murphy

Contemporary Aesthetics (Journal Archive)

This paper receives its impetus from Gadamer's account of effective history (Wirkungsgeschichte) and his corresponding challenge to the 'problem of purity' that he locates in Kant's critique of aesthetic judgment and that derives from the attempt to establish universal founding principles for thought and action. This is a deep and wide-ranging issue, and so I focus on a very specific aspect of it: the division between intuition and understanding, between history as a given flux and enlightenment as a unifying synthesis, that motivates Kant's search for pure reflective grounds to reconcile them, and on the challenge posed to this division …

The Aesthetic Dissonance Of Industrial Wind Machines, Jon Boone

Contemporary Aesthetics (Journal Archive)

Yuriko Saito recently published an essay in this journal, "Machines in the Ocean: The Aesthetics of Wind Farms" (Contemporary Aesthetics, 2 (2004)). The bulk of her essay is a search for the right aesthetic justification for wind plants sited in the ocean as well as for those onshore. Because wind power does not emit toxins into the air and its source of energy is recurrent, it offers the promise of a clean, renewable alternative to fossil fuels. The central problem with harnessing any form of energy is that enormous energies are wasted in the process of producing and channeling a …

Carrying The Jade Tablet: A Consideration Of Confucian Artistry, Eric C. Mullis

Contemporary Aesthetics (Journal Archive)

In this paper I discuss the aesthetic dimension of ritual action. In order to demonstrate how the rites render action aesthetically expressive, I draw on the notion of an "art of context" and further detail the Confucian understanding of artistic practice as an essential component for moral cultivation. In turn, I use John Dewey's account of aesthetic form in order to support and further demonstrate the ability of the rituals and arts to organize action and to thereby render it aesthetically significant. However, Dewey's account entails that we question either conceptual or institutional limitations of aesthetic form as such limitations …

Anchorage To The World, Ken-Ichi Sasaki

Contemporary Aesthetics (Journal Archive)

We are anchored to the world because we are bodies. For us, the world means human society based upon nature. Nature is an essential constituent. For human being is bodily existence: social relationships are basically formed through the contact between these bodily existences, one with another, and the cultural space, that is, the city, is based on matter and surrounded by nature. Hence the possibility and the necessity of anchorage. An inanimate object is simply thrown into the sea of matter. Human bodies, on the contrary, do not only belong to this material texture in a passive way but can …

Expert Evidence After Daubert, David Faigman, Michael J. Saks

Faculty Scholarship

No abstract provided.

Teacher Learning: Documentation, Collaboration, And Reflection, William A. Parnell

Dissertations and Theses

Inspired by the Municipal preprimary schools of Reggio Emilia, Italy, two art studio teachers and a researcher have explored experiences and meaning in the atelier. When studio teachers document children's thinking through digital photographs. transcribed audio tapes, quotations of a child's verbal thoughts, and copies of their work, an indescribable moment in teacher thinking interweaves with the child's learning, As teachers capture children's representations, investigate, interpret, and share their ideas with colleagues and community-an underlying question emerges. What are studio teachers' experiences o/teaching-learning in the atelier as they utilize documentation, collaboration, and reflection as a way to inform their practices? …

The Modernization Of European Antitrust Enforcement: The Economics Of Regulatory Competition, Ben Depoorter, Francesco Parisi

Faculty Scholarship

No abstract provided.

Corrective Feedback In Online Asynchronous And Synchronous Environments In Spanish As A Foreign (Sfl) Classes, Martha E. Castañeda

USF Tampa Graduate Theses and Dissertations

This dissertation reports on an investigation of corrective feedback provided by instructors to learners in sixteen online asynchronous and synchronous interactions. The overarching objective of this study was to examine the provision of corrective feedback in computer-mediated communication (CMC) environments. This study also sought to examine the frequency of corrective feedback types and the relationship between learner error and corrective feedback provision. Finally, this study investigated what types of corrective feedback led to repaired learner responses.

Over the course of one university semester, the instructors and students in four second-semester Spanish courses participated in bulletin board and chat room discussions …

Learning To Dance While Becoming A Dancer: Identity Construction As A Performing Art, Matthew A. Caudill

USF Tampa Graduate Theses and Dissertations

In a university undergraduate dance department, students seem to be learning more than pirouettes and pas de bourées; students are learning how to construct their identities and present themselves as ‘dancers’. As they progress through their undergraduate careers, the students are not only developing technical skills, but they are also learning the ins and outs of how dancers look, speak and behave. Based on three months of observation and in-depth interviews, it seems that developing into a dancer requires developing into an individual who shows unique commitment both to him/herself and to the art of dance itself. While many …

The Predictive Validity Of Four Reading Fluency Measures On A State's "High-Stakes" Outcome Assessment, Jose Michael Castillo

USF Tampa Graduate Theses and Dissertations

This study examined the long-term predictive validity of four reading fluency measures on a statewide reading assessment. The reading fluency measures were administered to a group of first and second grade students and their utility for predicting outcomes on a state's reading assessment in third grade was examined. Specifically, the amount of variance accounted for on the outcome assessment by Curriculum-Based Measurement ñ Reading (R-CBM) probes from two sources, a list fluency measure, and a group measure of fluency was investigated. The extent to which each is an accurate predictor of long-term performance when considered individually and in combination with …

Eros, Paideia And Arête: The Lesson Of Plato’S Symposium, Jason St. John Oliver Campbell

USF Tampa Graduate Theses and Dissertations

Commentators of Plato’s Symposium rarely recognize the importance of traditional Greek conceptions of Eros, paideia and arête in understanding Plato’s critique of the various educational models presented in the dialogue. I will show how Plato contests these models by proposing that education should consist of philosophy. On this interpretation, ancient Greek pedagogy culminates in a philosophical education. For this new form of education, the dialogical model supplants the traditional practices of kléos and poetic mimēsis, inextricably bound to archaia paideia and traditional forms of education. Plato’s Socrates is searching for knowledge and immortality through an application of the philosophical method, …