Digital Commons Network^™

Exploring The Design Space Of Multichannel Peer-To-Peer Live Video Streaming Systems, Miao Wang, Lisong Xu, Byrav Ramamurthy

School of Computing: Faculty Publications

Most of the commercial peer-to-peer (P2P) video streaming deployments support hundreds of channels and are referred to as multichannel systems. Recent research studies have proposed specific protocols to improve the streaming quality for all channels by enabling cross-channel cooperation among multiple channels. In this paper, we focus on the following fundamental problems in designing cooperating multichannel systems: 1) what are the general characteristics of existing and potential designs? and 2) under what circumstances should a particular design be used to achieve the desired streaming quality with the lowest implementation complexity? To answer the first question, we propose simple models based …

Health Effects Associated With Foreclosure: A Secondary Analysis Of Hospital Discharge Data, Nancy N. Menzel, Sheniz Moonie, Melva Thompson-Robinson

Environmental & Global Health Faculty Research

Objectives: The purpose of this study was to assess the health effects of high home foreclosure rates in an area of the United States of America and the utility of hospital discharge data for this purpose.

Methods: We analyzed hospital discharge data from three postal zip codes using the principal diagnosis for 25 Diagnostic Related Groups associated with stress. Descriptive statistics were used to characterize hospital discharge rates for each condition by year and zip code. To test for differences across time, the Cochran-Armitage trend test was performed.

Results: Most conditions did not demonstrate a statistical change between 2005 and …

A Greener Synthesis Of 2-Aminochromenes In Ionic Liquid And Evaluation Of Their Antiproliferative Activities, M. Sudershan Rao, Bhupender S. Chhikara, Rakesh Tiwari, Amir Nasrolahi Shirazi, Keykavous Parang, Anil Kumar

Pharmacy Faculty Articles and Research

An improved simple and facile synthesis of chromene derivatives by employing threecomponent one-pot condensation reaction of β-naphthol, aromatic aldehydes, and malononitrile in ionic liquids is described.

Framing In Cognitive Clinical Interviews About Intuitive Science Knowledge: Dynamic Student Understandings Of The Discourse Interaction, Rosemary S. Russ, Victor R. Lee, Bruce L. Sherin

Instructional Technology and Learning Sciences Faculty Publications

Researchers in the science education community make extensive use of cognitive clinical interviews as windows into student knowledge and thinking. Despite our familiarity with the interviews, there has been very limited research addressing the ways that students understand these interactions. In this work we examine students’ behaviors and speech patterns in a set of clinical interviews about chemistry for evidence of their tacit understandings and underlying expectations about the activity in which they are engaged. We draw on the construct of framing from anthropology and sociolinguistics and identify clusters of behaviors that indicate that students may alternatively frame the interview …

What A Long Strange Trip It’S Been: A Comparison Of Authors, Abstracts, And References In The 1991 And 2010 Icls Proceedings, Victor R. Lee, Lei Ye, Mimi Recker

Instructional Technology and Learning Sciences Faculty Publications

We examine differences in authorship, word usage, and references in full papers from the 1991 and 2010 ICLS proceedings. Through a series of analyses, we observe that, while authors largely hail from the US, national and regional participation in the LS community has broadened. Word usage suggests a shift in emphasis from cognitive issues to ones that are both cognitive and cultural. Reference analysis indicates a shift in core literatures and influential authors.

Mild Cognitive Impairment: Statistical Models Of Transition Using Longitudinal Clinical Data, Erin L. Abner, Richard J. Kryscio, Gregory E. Cooper, David W. Fardo, Gregory A. Jicha, Marta S. Mendiondo, Peter T. Nelson, Charles D. Smith, Linda J. Van Eldik, Lijie Wan, Frederick A. Schmitt

Sanders-Brown Center on Aging Faculty Publications

Mild cognitive impairment (MCI) refers to the clinical state between normal cognition and probable Alzheimer's disease (AD), but persons diagnosed with MCI may progress to non-AD forms of dementia, remain MCI until death, or recover to normal cognition. Risk factors for these various clinical changes, which we term "transitions," may provide targets for therapeutic interventions. Therefore, it is useful to develop new approaches to assess risk factors for these transitions. Markov models have been used to investigate the transient nature of MCI represented by amnestic single-domain and mixed MCI states, where mixed MCI comprised all other MCI subtypes based on …

The Fulbright Program's Contemporary Relevance, Julia Catherine Starr

CMC Senior Theses

The most valuable contribution of the Fulbright Program, at its founding in 1946 and today in 2012, remains its ability to inculcate mutual understanding, which represents a vital component in the success of multilateral cooperation necessary to create a secure and thriving international community. During the Cold War, promoting mutual understanding was valued for its ability to share the ideals and benefits of American democracy and create strong relationships between Americans and foreigners in direct competition with the Soviet Union’s projection of communist ideology. This thesis demonstrates how, through the lenses of leadership, multiculturalism, soft power, and public diplomacy, the …

Caught Between A Rock And A Hard Place: The Title Ix Generation, Mathematics, And The State Of Feminist Quantitative Social Science Research, Jill R. Williams

Journal of Feminist Scholarship

In this essay I reflect on the fortieth anniversary of the Mink Equal Opportunity in Education Act of 1972 (Title IX), which prohibited discrimination based on sex in federally funded education programs in the United States and inspired educational programs that encourage girls to pursue math and science careers. I argue that despite the feminist underpinnings of Title IX, in recent years feminism has discouraged the advancement of women in math and science by excluding quantitative research from its publications, quantitative researchers from women's and gender studies programs, and quantitative training from its curriculum. I examine my own experience of …

An Overview Of Static Pipelining, Ian Finlayson, Gang-Ryung Uh, David Whalley, Gary Tyson

Computer Science Faculty Publications and Presentations

A new generation of mobile applications requires reduced energy consumption without sacrificing execution performance. In this paper, we propose to respond to these conflicting demands with an innovative statically pipelined processor supported by an optimizing compiler. The central idea of the approach is that the control during each cycle for each portion of the processor is explicitly represented in each instruction. Thus the pipelining is in effect statically determined by the compiler. The benefits of this approach include simpler hardware and that it allows the compiler to perform optimizations that are not possible on traditional architectures. The initial results indicate …

End-To-End Models: Management Applications, John H. Steele, Eileen E. Hofmann, Dian J. Gifford

CCPO Publications

Preface to the 2012 issue of Progress in Oceanography.

The Rise And Fall Of Crassostrea Virginica Oyster Reefs: The Role Of Disease And Fishing In Their Demise And A Vignette On Their Management, Eric N. Powell, John M. Klinck, Kathryn Ashton-Alcox, Eileen E. Hofmann, Jason Morson

CCPO Publications

We describe a model designed to simulate the shell carbonate budget of an oyster reef.We identify five parameters descriptive of basic characteristics of the shell carbonate budget of a reef that limit simulation accuracy. Two describe the TAZ (taphonomically-active zone) and the distribution of shell carbonate within it. One is the taphonomic rate in the TAZ. Two determine the volume contribution of shell carbonate and the taphonomic loss rate within the reef framework. For Mid-Atlantic estuaries, model simulations suggest that reef accretion only occurs if oyster abundance is near carrying capacity. Simulations further suggest that reef accretion is infeasible for …

Circulation And Behavior Controls On Dispersal Of Eastern Oyster (Crassostrea Virginica) Larvae In Delaware Bay, Diego A. Narvaez, John M. Klinck, Eric N. Powell, Eileen E. Hofmann, John Wilkin, Dale B. Haidvogel

CCPO Publications

The degree of genetic connectivity among populations in a metapopulation has direct consequences for species evolution, development of disease resistance, and capacity of a metapopulation to adapt to climate change. This study used a metapopulation model that integrates population dynamics, dispersal, and genetics within an individual-based model framework to examine the mechanisms and dynamics of genetic connectivity within a metapopulation. The model was parameterized to simulate four populations of oysters (Crassostrea virginica) from Delaware Bay on the mid-Atlantic coast of the United States. Differences among the four populations include a strong spatial gradient in mortality, a spatial gradient …

From The Editors, Anna M. Klobucka, Jeannette E. Riley, Catherine Villanueva Gardner

Journal of Feminist Scholarship

No abstract provided.

In Pursuit Of Consensus: Disagreement And Legitimization During Small Group Argumentation, Leema K. Berland, Victor R. Lee

Instructional Technology and Learning Sciences Faculty Publications

In recent years, an emphasis on scientific argumentation in classrooms has brought into focus collaborative consensus-building as an instructional strategy. In these situations, students with differing and competing arguments are asked to work with one another in order to establish a shared perspective. However, the literature suggests that consensus-building can be challenging for students because their interpretations of the argumentative task and context may not enable their productive engagement with counter-arguments and evidence. In this paper, our goal is to explore the ways in which interactions of students support or inhibit their consensus-building. To that end, we examine and describe …

Superstorm Sandy Changed The Shape Of Connecticut, Peg Vanpatten

Wrack Lines

Superstorm Sandy, followed quickly by a Nor'easter, arrived in our region just in time to cancel Halloween. While the wind wasn't up to hurricane strength in most of Connecticut, its storm surges and high winds still caused plenty of damage.

Following The Trail Of Ants: An Examination Of The Work Of E.O. Wilson, Samantha Kee

Writing Across the Curriculum

No abstract provided.

Abelian Groups With Partial Decomposition Bases In LΔ∞Ω, Part I, Carol Jacoby, Katrin Leistner, Peter Loth, Lutz Strungmann

Mathematics Faculty Publications

We consider the class of abelian groups possessing partial decomposition bases in L^δ_∞ω for δ an ordinal. This class contains the class of Warfield groups which are direct summands of simply presented groups or, alternatively, are abelian groups possessing a nice decomposition basis with simply presented cokernel. We prove a classification theorem using numerical invariants that are deduced from the classical Ulm-Kaplansky and Warfield invariants. This extends earlier work by Barwise-Eklof, Göbel and the authors.

Development And Deployment Of A Bioreactor For The Removal Of Sulfate And Manganese From Circumneutral Coal Mine Drainage, C. B. Mastin, J. D. Edwards, Christopher D. Barton, Anastasios D. Karathanasis, Carmen T. Agouridis, Richard C. Warner

Forestry and Natural Resources Faculty Publications

Surface mining, in the form of contour mining and mountain-top removal, is a common means for retrieving coal in the Appalachian Coal Belt region of Kentucky. Overburden or excess spoil generated by these two methods is placed in valley fills. Traditionally Constructed fills have been shown to adversely impact headwater ecosystems via stream burial and through alterations to the hydrology, sediment supply, water quality and biological composition of downstream reaches. Mine drainages emanating from the toe of valley fills often contain elevated levels of total dissolved solids and heavy metals. Drainage chemistry from Guy Cove, a valley fill located in …

Mining Functional Subgraphs From Cancer Protein-Protein Interaction Networks, Ru Shen, Nalin Goonesekere, Chittibabu Guda

Faculty Work

Background: Protein-protein interaction (PPI) networks carry vital information about proteins’ functions. Analysis of PPI networks associated with specific disease systems including cancer helps us in the understanding of the complex biology of diseases. Specifically, identification of similar and frequently occurring patterns (network motifs) across PPI networks will provide useful clues to better understand the biology of the diseases.

Results: In this study, we developed a novel pattern-mining algorithm that detects cancer associated functional subgraphs occurring in multiple cancer PPI networks. We constructed nine cancer PPI networks using differentially expressed genes from the Oncomine dataset. From these networks we …

What Can Music Theory Pedagogy Learn From Mathematics Pedagogy?, Leigh Vanhandel

Journal of Music Theory Pedagogy

No abstract provided.

Volume 26, Various Authors

Journal of Music Theory Pedagogy

No abstract provided.

Evaluation Of Algae Concentration In Manure Based Media, Maira Freire Pecegueiro Do Amaral

Theses and Dissertations--Biosystems and Agricultural Engineering

Algae can be used to treat wastewater and manure while producing a feedstock for renewable energy. Algae require nutrients to achieve their maximum growth and manure could provide those nutrients, thereby reducing the cost of algae production and the impact of manure treatment. Algae concentration during cultivation is a critical variable that is difficult to measure due to the high concentration of suspended solids present in manure. This dissertation addresses methods to measure algae concentration in the presence of manure solids.

Quantifying the algae concentration gravimetrically or by optical density was unreliable due to manure solids interfering with the measurement. …

Integrated Chemostratigraphy And Paleoceanography Of The Mississippian Barnett Formation, Krystin Chantel Robinson

Earth & Environmental Sciences Theses - Archive

The Barnett Formation was deposited on a gently sloping marine margin that ultimately became the Fort Worth Basin (FWB), a foreland basin that evolved during the late Paleozoic Era. The FWB formed as a result of the early Ouachita Orogeny, due to the collision of Laurasia and Gondwana. The Mississippian Barnett Formation is an organic-rich lithologic unit composed primarily of laminated siliceous mudrock with some calcareous mudrock intervals. The objective of the project is to develop and interpret stratigraphic changes in the geochemistry of the Barnett Formation for the purposes of understanding the paleoceanography of the northernmost Fort Worth Basin, …

Which Accelerates Faster – A Falling Ball Or A Porsche?, James D. Rall, Wathiq Abdul-Razzaq

Faculty & Staff Scholarship

An introductory physics experiment has been developed to address the issues seen in conventional physics lab classes including assumption verification, technological dependencies, and real world motivation for the experiment. The experiment has little technology dependence and compares the acceleration due to gravity by using position versus time graphs and the kinematic equation. The students are then asked to compare the acceleration they found to the one of a Porsche car which they seem surprised when they learn about it. This experiment may contribute significantly to the understanding of the concept of acceleration and the appreciation for the force of gravity.

Interseismic Strain Accumulation Along The Western Boundary Of The Indian Subcontinent, Walter Szeliga, Roger Bilham, Din Mohammad Kakar, Sarosh H. Lodi

Faculty Scholarship for the Cascadia Hazards Institute

Despite an overall sinistral slip rate of approximately 3 cm/yr, few major earthquakes have occurred in the past 200 years along the Chaman fault system, the western boundary of the India Plate with the Eurasia Plate. GPS and InSAR data reported here indicate sinistral shear velocities of 8-17 mm/yr across the westernmost branches of the fault system, suggesting that a significant fraction of the plate boundary slip is distributed in the fold and fault belt to the east. At its southernmost on-land segment, near the triple junction between the Arabia, Eurasia, and India Plates, we find the velocity across the …

Capability Of 2 Gait Measures For Detecting Response To Gait Training In Stroke Survivors: Gait Assessment And Intervention Tool And The Tinetti Gait Scale, Janice Zimbelman, Janis J. Daly, Kristen L. Roenigk, Kristi Butler, Richard Burdsall, John P. Holcomb Jr.

Mathematics and Statistics Faculty Publications

Zimbelman J, Daly JJ, Roenigk KL, Butler K, Burdsall R, Holcomb JP. Capability of 2 gait measures for detecting response to gait training in stroke survivors: Gait Assessment and Intervention Tool and the Tinetti Gait Scale. Objective:To characterize the performance of 2 observational gait measures, the Tinetti Gait Scale (TGS) and the Gait Assessment and Intervention Tool (G.A.I.T.), in identifying improvement in gait in response to gait training. Design: In secondary analysis from a larger study of multimodal gait training for stroke survivors, we measured gait at pre-, mid-, and posttreatment according to G.A.I.T. and TGS, assessing their capability to …

A Kinetic Model For Semidilute Bacterial Suspensions, Shawn D. Ryan, Leonid Berlyand, Brian M. Haines, D. A. Karpeev

Mathematics and Statistics Faculty Publications

Suspensions of self-propelled microscopic particles, such as swimming bacteria, exhibit collective motion leading to remarkable experimentally observable macroscopic properties. Rigorous mathematical analysis of this emergent behavior can provide significant insight into the mechanisms behind these experimental observations; however, there are many theoretical questions remaining unanswered. In this paper, we study a coupled PDE/ODE system first introduced in the physics literature and used to investigate numerically the effective viscosity of a bacterial suspension. We then examine the kinetic theory associated with the coupled system, which is designed to capture the long-time behavior of a Stokesian suspension of point force dipoles (infinitesimal …

Integrable Models For Shallow Water With Energy Dependent Spectral Problems, Rossen Ivanov, Tony Lyons

Articles

We study the inverse problem for the so-called operators with energy depending potentials. In particular, we study spectral operators with quadratic dependence on the spectral parameter. The corresponding hierarchy of integrable equations includes the Kaup–Boussinesq equation. We formulate the inverse problem as a Riemann–Hilbert problem with a Z₂ reduction group. The soliton solutions are explicitly obtained.

The Big Banks: Background, Deregulation, Financial Innovation, And Too Big To Fail, Charles W. Murdock

Denver Law Review

No abstract provided.

On Some New Inequalities For Convex Functions, Mevlüt Tunç

Turkish Journal of Mathematics

In the present paper we establish some new integral inequalities analogous to the well known Hadamard's inequality by using a fairly elementary analysis.