Digital Commons Network^™

The Unified-Fft Method For Fast Solution Of Integral Equations As Applied To Shielded-Domain Electromagnetics, Brian J. Rautio

Dissertations - ALL

Electromagnetic (EM) solvers are widely used within computer-aided design (CAD) to improve and ensure success of circuit designs. Unfortunately, due to the complexity of Maxwell's equations, they are often computationally expensive. While considerable progress has been made in the realm of speed-enhanced EM solvers, these fast solvers generally achieve their results through methods that introduce additional error components by way of geometric approximations, sparse-matrix approximations, multilevel decomposition of interactions, and more. This work introduces the new method, Unified-FFT (UFFT). A derivative of method of moments, UFFT scales as O(N log N), and achieves fast analysis by the unique combination of …

Rooting For The Story: Institutional Sports Journalism In The Digital Age, Brian Peter Moritz

Dissertations - ALL

This dissertation examines contemporary daily sports journalism through the lenses of media sociology and new institutional theory. In-depth interviews with 25 sports journalists (reporters and editors) identified the institutionalized norms, values, practices and routines of American sports journalism, demonstrated how that institutionalization affects story selection, and showed how the profession is changing due to digital and social media. The interviews show that although traditional sports journalism is highly institutionalized, digital sports journalism is far less so. Traditional sports journalism is still centered around a story, and digital sports journalism follows Robinson's (2011) journalism-as-process model. The journalists interviewed are expected to …

Lacustrine Turbidites From Tropical African Lakes As Indicators Of Hydrologic And Climatic Changes, Xuewei Zhang

Dissertations - ALL

Flood-sourced turbidites (i.e. hyperpycnites) preserved in lake basins are proven indicators of hydrologic changes, yet their usefulness as recorders of tropical paleoclimate variability has long been overlooked. The primary focus of this dissertation research is to investigate the late Quaternary hydroclimatic changes in tropical Africa, using hyperpycnites, dated sediment cores, and high-resolution seismic reflection profiles from Lake Kivu in the East African Rift and Lake Bosumtwi in equatorial West Africa. A secondary focus of this dissertation is to image ancient turbidite systems of the Lake Albert rift in East Africa, using 2-D and 3-D seismic reflection data, and to assess …

Kant And The Neglected Alternative, Andrew F. Specht

Dissertations - ALL

In this work, I conduct a reconstruction and evaluation of the Neglected Alternative objection to Immanuel Kant's philosophy. Kant famously argues in the Transcendental Aesthetic section of the Critique of Pure Reason that space and time are subjective forms of human intuition, and the Neglected Alternative maintains that this argument is a failure. According to the Neglected Alternative, Kant completely overlooks the possibility that space and time are in some way both subjective and objective, and so Kant's conclusions about the nature of space and time are not justified by his arguments. This objection was first formulated very soon after …

Leaders' Accounts: A Study Of Transnational Ngos Leadership Views On Accountability, Paloma Raggo

Dissertations - ALL

The increased involvement of non-state actors such as nongovernmental organizations (NGOs) in The increased involvement of non-state actors such as nongovernmental organizations (NGOs) in shaping various national and global policy processes raises serious questions about the accountability, authority, and legitimacy of these important yet unelected actors. Although there is no consensus on how to define accountability, broadly the concept refers to the idea that some hold others responsible for their actions according to a set of standards defining proper behavior. However, deciding to whom and to what standards NGOs are accountable and how they are (or should be) held accountable …

Is Faith On The Campus Tour? Rural, Public College Students' Exploration Of Spiritual And Religious Identity, Tamara Durant

Dissertations - ALL

Abstract

This dissertation examined how students of diverse spiritual or religious beliefs or worldviews at a rural, public college interpreted, made meaning of, and drew upon their spirituality in relation to other aspects of their identity (e.g., race, gender, sexual identity), focusing particularly on the intersections of students' multiple marginalized identities. It was a single-site, qualitative study involving 20 participants attending a rural, mid-sized, predominantly-White northeastern public university. The researcher used semi-structured, in-person interviews, gathering and analyzing data using symbolic interactionism (Blumer, 1969) with the critical stance possible from applying the lens of the Reconceptualized Model of Multiple Dimensions of …

Determination Of The X(3872) Meson Quantum Numbers, Bin Gui

Dissertations - ALL

The Large Hadron Collider beauty (LHCb) is one of the several experiments located at the ring of the Large Hadron Collider (LHC) in Geneva. The LHCb detector is a single arm forward spectrometer and is designed to perform high precision measurements of Charge Parity (CP) violation parameters and rare decays of the beauty and charm hadrons. The detector was successfully operated at a center-of-mass energy of 7 TeV in 2010 and 2011 and at 8 TeV in 2012. Over 3 fb-1 of data has been collected by the LHCb. The LHCb experiment is also well suited for studies on hadron …

The Synthesis, Characterization, And Application Of Carborane-Cluster Based Macrocycles And Boron Nitride Nanosheets In Photovoltaics, Christopher Robert Petrelli

Dissertations - ALL

Chapter 1: Dye-sensitized solar cell (DSSC) efficiencies have not significantly improved in recent years, primarily because of their single band gap design, limitations in dye absorption energies, and the Shockley-Queisser (SQ) limit. DSSCs require incident photon energy in the visible spectrum for the cell to produce a usable current. While the possibility of absorbing two

near-infrared photons is a known concept for surmounting the SQ limit, the opportunities presented by mesoporous systems for creating such a sensitizer do not appear to have been studied. By incorporating carborane cluster-based macrocyclic compounds as "electron reservoirs," a number of the inherent limitations in …

Three Essays In Applied Econometrics: With Application To Natural Resource And Energy Markets, Chong Li

Dissertations - ALL

Abstract

Chapter 1

This essay examines the effect of state renewable energy policies in inducing innovation and the spillover effect of these policies on innovation in neighboring states. The analysis is conducted with patent data related to renewable technology using wind power for the United States over the period 1983-2010. We run a panel data regression of a log transformation of states' yearly patent counts on state renewable energy policies and spatially weighted average of renewable energy policies in neighboring states using the Tobit model with individual effects. The results show that renewable energy rules, regulation and mandates such as …

Adaptive Power Management For Computers And Mobile Devices, Hao Shen

Dissertations - ALL

Power consumption has become a major concern in the design of computing systems today. High power consumption increases cooling cost, degrades the system reliability and also reduces the battery life in portable devices. Modern computing/communication devices support multiple power modes which enable power and performance tradeoff. Dynamic power management (DPM), dynamic voltage and frequency scaling (DVFS), and dynamic task migration for workload consolidation are system level power reduction techniques widely used during runtime. In the first part of the dissertation, we concentrate on the dynamic power management of the personal computer and server platform where the DPM, DVFS and task …

Discrete Gate Sizing Methodologies For Delay, Area And Power Optimization, Jiani Xie

Dissertations - ALL

The modeling of an individual gate and the optimization of circuit performance has long been a critical issue in the VLSI industry. In this work, we first study of the gate sizing problem for today's industrial designs, and explore the contributions and limitations of all the existing approaches, which mainly suffer from producing only continuous solutions, using outdated timing models or experiencing performance inefficiency.

In this dissertation, we present our new discrete gate sizing technique which optimizes different aspects of circuit performance, including delay, area and power consumption. And our method is fast and efficient as it applies the local …

Distinct Conformational Behaviors Of Four Mammalian Dual-Flavin Reductases (Cytochrome P450 Reductase, Methionine Synthase Reductase, Neuronal Nitric Oxide Synthase, Endothelial Nitric Oxide Synthase) Determine Their Unique Catalytic Profiles, Mohammad Mahfuzul Haque, Mekki Bayachou, Jesus Tejero, Claire T. Kenney, Naw M. Pearl, Sang-Choul Im, Lucy Waskell, Dennis J. Stuehr

Chemistry Faculty Publications

Multidomain enzymes often rely on large conformational motions to function. However, the conformational setpoints, rates of domain motions and relationships between these parameters and catalytic activity are not well understood. To address this, we determined and compared the conformational setpoints and the rates of conformational switching between closed unreactive and open reactive states in four mammalian diflavin NADPH oxidoreductases that catalyze important biological electron transfer reactions: cytochrome P450 reductase, methionine synthase reductase and endothelial and neuronal nitric oxide synthase. We used stopped-flow spectroscopy, single turnover methods and a kinetic model that relates electron flux through each enzyme to its conformational …

The Impact Of Mindfulness And Test Anxiety On Academic Performance., Mariam A. Altairi

College of Arts & Sciences Senior Theses

No abstract provided.

Is It The Thought That Counts? : Investigating Children's Understanding Of Helpfulness, Effort, And Utility., Danielle Mccarty

College of Arts & Sciences Senior Theses

How do children consider helpfulness, specifically effort and utility, when evaluating potential informants? We tested preschoolers on three conditions, asking them to choose between a character high in both effort and utility and a character who acted with either 1) low effort and high utility, 2) high effort and low utility, or 3) low effort and no utility (removed from social contexts). The opposing characters provided conflicting information when labeling novel objects, and participants were asked which label they endorsed. They were then asked to choose which character was the more helpful, which worked harder, and which was nicer. We …

Examining The Effects Of Nebraska's Good Time Laws - Research Brief, Benjamin M. Steiner, Calli M. Cain

Reports

The purpose of this research brief is to summarize the findings of a study of Nebraska’s good time laws conducted by Dr. Benjamin Steiner and Calli Cain for the Nebraska Center for Justice Research at the University of Nebraska-Omaha. An electronic copy of the full report can be accessed through the link at the end of this brief. This brief lists each of the three specific research questions, the primary findings for each question, and the major conclusion from each set of findings. Please refer to the full report for the executive summary, full findings, and methodological details of the …

Examining The Effects Of Nebraska's Good Time Laws - Final Report, Benjamin M. Steiner, Calli M. Cain

Reports

Sentencing credit laws provide opportunities for inmates to gain a reduction in their prison sentence, and such laws have at least four intended goals: 1) reducing prison populations; 2) promoting prosocial behavior during imprisonment by offering inmates incentive for good behavior and/or deterring them from engaging in antisocial behavior; 3) reducing recidivism by providing offenders incentive for good behavior and participation in rehabilitative programming; and, 4) lowering correctional costs (Lawrence & Lyons, 2011; Weisburd & Chayet, 1989).

The state of Nebraska currently has a sentencing credit law that automatically awards good time credits to inmates. The study described in this …

Trends In Young Adult Male Incarceration Admissions In Nebraska, Jonathan R. Brauer

Reports

Contents: Notes/Acknowledgements; Executive Summary; General Admission Trends; Admissions by Race/Ethnicity; Admissions by Offense Type; Average Sentence Lengths; and Estimated Incarceration Costs.

Examining The Effects Of Nebraska's Good Time Laws: Final Report, Benjamin M. Steiner, Calli Cain

Reports

Sentencing credit laws provide opportunities for inmates to gain a reduction in their prison sentence, and such laws have at least four intended goals: 1) reducing prison populations; 2) promoting prosocial behavior during imprisonment by offering inmates incentive for good behavior and/or deterring them from engaging in antisocial behavior; 3) reducing recidivism by providing offenders incentive for good behavior and participation in rehabilitative programming; and, 4) lowering correctional costs (Lawrence & Lyons, 2011; Weisburd & Chayet, 1989). The state of Nebraska currently has a sentencing credit law that automatically awards good time credits to inmates. The study described in this …

Examining The Effects Of Nebraska's Good Time Laws: Research Brief, Benjamin Steiner, Calli Cain

Reports

The purpose of this research brief is to summarize the findings of a study of Nebraska’s good time laws conducted by Dr. Benjamin Steiner and Calli Cain for the Nebraska Center for Justice Research at the University of Nebraska-Omaha. An electronic copy of the full report can be accessed through the link at the end of this brief. This brief lists each of the three specific research questions, the primary findings for each question, and the major conclusion from each set of findings. Please refer to the full report for the executive summary, full findings, and methodological details of the …

Trends In Young Adult Male Incarceration Admissions In Nebraska, 2000-2013: Final Report, Jonathan R. Brauer, Nebraska Center For Justice Research, University Of Nebraska At Omaha

Reports

No abstract provided.

An Evaluation Of The Effectiveness Of E-Learning, Mobile Learning, And Instructor-Led Training In Organizational Training And Development, Tyechia Paul

College of Business and Economics

Employee training is a strategic investment. While workforce training has depended on traditional, face-to-face, classroom delivery, new methods have emerged. Electronic learning (e-learning) is training via electronic medium. Mobile learning (m-learning) is a subset of e-learning modalities and specifically refers to electronic delivery of training via mobile devices such as smartphones, tablets, and laptops. The new generation of e-learning is delivered in a mobile environment. Yet, there has been little research to establish the efficacy of the newer training methods.

This study was among the first to fill this research gap through an experiment that tested the comparative effectiveness of …

Screening St. Augustinegrass For Usda Zone 7, Nathaniel Gambrell

All Theses

St. Augustinegrass [Stenotaphrum secundatum (Walt.) Kuntze] generally has poor cold tolerance yet excellent shade tolerance. As mostly hot summers follow cold winters in USDA Hardiness Zone 7, severely damaging tall fescue [Festuca arundineacea Schreb.] and centipedegrass [Eremochloa ophiuroides (Munro) Hack.], a St. Augustinegrass cultivar cold tolerant enough to be grown for shady lawns would greatly benefit both home owners and sod growers in USDA Hardiness Zone 7. Eight St. Augustinegrass samples were selected, including industry standards 'Raleigh' and 'Palmetto', for further testing from an established germplasm collection of material collected from lawns grown in USDA Hardiness Zone 7. …

Comparative Fecundity During Laboratory Rearing In South Carolina (March-May) Of Field-Collected Versus F1 Laboratory-Reared Laricobius Nigrinus (Coleoptera: Derodontidae), Dragana Trninic

All Theses

The purpose of this study was to determine whether there is a difference in Laricobius nigrinus Fender fecundity between field-collected and laboratory-reared beetles. Laricobius nigrinus used for this study were separated into four cohorts based on origin: Cohort 1 – Wild-caught from Seattle, WA – native population; Cohort 2 – Wild-caught from Banner Elk, NC – naturalized population; Cohort 3 – Laboratory-reared F1generation from Seattle, WA parents; and Cohort 4 – Laboratory-reared F1 generation from Banner Elk, NC parents. In 2013, the first year of this study, gender determination of live beetles had not been developed for L. nigrinus. For …

Composite Panel Impact Testing For The Down-Selection Of Material For Use In The Outer Shell Of Football Helmets, Natalie Genevieve Patzin

All Theses

Each year, there are an estimated 3.8 million sports-related concussions that occur in the United States alone, the majority occurring during football collisions. These staggering numbers occur even with the use of mandated protective helmets, which are designed to decrease potential brain injuries. The outer shell of a football helmet acts as a shield for vulnerable areas of the cranium by providing the initial impact force dispersion to allow a more distributed load to be transferred to the inner foam padding. The current material standard for the exterior casing is a polycarbonate blend. Multiple studies demonstrate insufficiencies in current helmets …

The Effects Of Ipad Apps On Student Achievement In Literacy For Children In 2nd And 3rd Grade, Deena M. Reyes

Dissertations, Masters Theses, Capstones, and Culminating Projects

Many educators consider using educational iPad apps to supplement literacy curriculum and facilitate greater student engagement. Student literacy achievement is crucial at the lower elementary level. Students who do not progress through the grade level literacy standards of the Common Core State Standards need intervention instruction to achieve mastery. The purpose of this paper is to examine the effectiveness of using iPad apps based instruction in reading intervention programs for second and third grade students.

This study followed a mixed method approach, a pretest, post-test quasi experimental design where students enrolled in an after school reading intervention program used iPad …

Collaborative Teaching: A Delivery Model To Increase Responsiveness To The Needs Of All Learners Through Academic And Social Inclusion, Dayna Reilly

Dissertations, Masters Theses, Capstones, and Culminating Projects

Students with special needs often miss out on classroom curricula for specialized instruction. While these services are valued for educational benefits, this instruction method often has negative impacts on social-emotional development and targets students for their differing needs.

Integrated collaborative teaching models include collaborative teaching among general and special educators in an inclusive environment. In this descriptive study, the author examined integrated collaborative teaching as a delivery model to increase responsiveness to the needs of all learners through academic and social inclusion.

This study involved students with a wide range of disabilities from two different grade leveled collaborative classrooms, who …

2014 Winter Graduate & Undergraduate Commencement, Lindenwood University

Commencement Programs

Lindenwood University Commencement program.

Mediaeval Baebes To Perform Dec. 9 At Ford Center, Christina Steube

University of Mississippi News

No abstract provided.

Hispanic Entrepreneurship In Nebraska: Trends And Economic Profile, Lissette Aliaga-Linares

Latino/Latin American Studies Policy Briefs

The growth of the Hispanic population in Nebraska was accompanied by a significant increase in Hispanic entrepreneurship at the beginning of the 2000s. From 2002 to 2007, the 3,065 Hispanic-owned businesses constituted a small but dynamic and resilient segment of business growth in the state. Did participation in self-employment decrease for Hispanics after the economic crisis of 2008? What are the characteristics of Hispanic-owned businesses and Hispanics business-owners in Nebraska? Do some of these characteristics reveal social or economic barriers that could prevent these businesses from succeeding?

Uno Website: Business And Finance - Code Of Professional Ethics, Uno Business And Finance University Of Nebraska At Omaha

Business/Finance/Operations

No abstract provided.