Digital Commons Network^™

Elicited Imitation As An Oral Proficiency Measure With Asr Scoring, Deryle W. Lonsdale, C. Ray Graham, Casey Kennington, Aaron W. Johnson, Jeremiah Lane Mcghee

Faculty Publications

This paper discusses development and evaluation of a practical, valid and reliable instrument for evaluating the spoken language abilities of second-language (L2) learners of English. First we sketch the theory and history behind elicited imitation (EI) tests and the renewed interest in them. Then we present how we developed a new test based on various language resources, and administered it to a few hundred students of varying levels. The students were also scored using standard evaluation techniques, and the EI results were compared to more traditionally derived scores. We also sketch how we developed a new integrated tool that allows …

Evolution Of Surface Deposits On A High-Pressure Turbine Blade—Part I: Physical Characteristics, James Edward Wammack, Jared M. Crosby, Daniel Fletcher, Jeffrey P. Bons, Thomas H. Fletcher

Faculty Publications

Turbine blade coupons with three different surface treatments were exposed to deposition conditions in an accelerated deposition facility. The facility simulates the flow conditions at the inlet to a first stage high-pressure turbine (T=1150 C, M=0.31). The combustor exit flow is seeded with dust particulate that would typically be ingested by a large utility power plant. The three coupon surface treatments included: (1) bare polished metal; (2) polished thermal barrier coating with bondcoat; and (3) unpolished oxidation resistant bondcoat. Each coupon was subjected to four successive 2 h deposition tests. The particulate loading was scaled to simulate 0.02 parts per …

Effects Of Temperature And Particle Size On Deposition In Land Based Turbines, Jared M. Crosby, Scott Lewis, Jeffrey P. Bons, Weiguo Ai, Thomas H. Fletcher

Faculty Publications

Four series of tests were performed in an accelerated deposition test facility to study the independent effects of particle size, gas temperature, and metal temperature on ash deposits from two candidate power turbine synfuels (coal and petcoke). The facility matches the gas temperature and velocity of modern first stage high pressure turbine vanes while accelerating the deposition process. Particle size was found to have a significant effect on capture efficiency with larger particles causing significant thermal barrier coating (TBC) spallation during a 4 h accelerated test. In the second series of tests, particle deposition rate was found to decrease with …

Evolution Of Surface Deposits On A High-Pressure Turbine Blade—Part Ii: Convective Heat Transfer, Jeffrey P. Bons, James Edward Wammack, Jared M. Crosby, Daniel Fletcher, Thomas H. Fletcher

Faculty Publications

A thermal barrier coating (TBC)-coated turbine blade coupon was exposed to successive deposition in an accelerated deposition facility simulating flow conditions at the inlet to a first stage high pressure turbine (T=1150 C, M=0.31). The combustor exit flow was seeded with dust particulate that would typically be ingested by a large utility power plant. The turbine coupon was subjected to four successive 2 h deposition tests. The particulate loading was scaled to simulate 0.02 parts per million weight (ppmw) of particulate over 3 months of continuous gas turbine operation for each 2 h laboratory simulation (for a cumulative 1 year …

“The Mormon Education Of A Gentile Justice: George Sutherland And Brigham Young Academy”, Edward L. Carter, James C. Phillips

Faculty Publications

Even within the eclectic group of men and women who have sat on the U.S. Supreme Court, Associate Justice George Sutherland (1922-38) was truly one of a kind: The only Justice ever to come from the state of Utah, he grew up as a non-Mormon in a cloistered 19th century Mormon society—and yet he rose to become one of the community’s most popular and even beloved political figures. As a lawyer, Sutherland defended Mormon men charged with “unlawful cohabitation” for polygamous lifestyles—and yet as a U.S. Senator he championed women’s rights, including suffrage. As one of the so-called “Four Horsemen …

First And Second Language Tongue Movements In Spanish And Korean Bilingual Speakers, Christopher Dromey, Shawn L. Nissen, Cynthia Wheeler

Faculty Publications

A number of previous studies have relied on perceptual judgments or acoustic analysis to examine second language (L2) production. However, few researchers have studied L2 performance by directly tracking the physical movements of the articulators. The purpose of the present study was to investigate intraspeaker differences in native (Korean or Spanish) and L2 (English) production through kinematic indices of tongue activity. This involved measurement of the speed, duration, and distance of tongue movements or strokes during speech. Findings indicated that the speakers had significantly slower stroke speeds and longer movement durations for L2 when compared to their native language (L1), …

Is There Something Unique About Marriage? The Relative Impact Of Marital Status, Relationship Quality, And Network Social Support On Ambulatory Blood Pressure And Mental Health, Wendy C. Birmingham, Julianne Holt-Lunstad, Brandon Q. Jones

Faculty Publications

Background Having close social relationships and being married specifically have been reliably associated with health benefits including lower morbidity and mortality. Purpose The purpose of this study was to examine the influence of marital status, relationship quality, and network support on measures of psychological and cardiovascular health. Method We examined ambulatory blood pressure (ABP) among 204 married and 99 single males and females (N=303). Results We found that both marital status and marital quality were important. Married individuals had greater satisfaction with life (SWL) and blood pressure dipping than single individuals. High marital quality was associated with lower ABP, lower …

Deictic Selves And Others In Pastaza Quichua Evidential Usage, Janis B. Nuckolls

Faculty Publications

This article clarifies the perspectival, deictic nature of evidentiality in Pastaza Quichua, a dialect of Quechua spoken in Amazonian Ecuador. I examine the discourse patterning of what have been called the direct and in direct experience morphemes and argue that a source-based characterization of these morphemes cannot be supported by the data. Using insights from liana Mushin's notion of epistemological stance, I outline the Quechua evidential system, identifying perspectives that may be divided into three main categories: the speaking self of a speech event, the speaking self of a narrated event, and a variety of stances that may categorized by …

2008 Weed Science Research Report – Tan Section, Ndsu Weed Science, Dept. Of Plant Sciences

Plant Sciences Weed Science Reports

The Weed Science team at North Dakota State University conduct field research in the State of North Dakota. This specific document reports on field research conducted in 2008. It includes work on adjuvants and formulations in North Dakota.

Margin Trading, Overpricing, And Synchronization Risk, Sanjeev Bhojraj, Robert J. Bloomfield, William B. Tayler

Faculty Publications

We provide experimental evidence that relaxing margin restrictions to allow more short selling can exacerbate overpricing, even though it reduces equilibrium price levels. This is because smart-money traders initially profit more by front-running optimistic investor sentiment than by disciplining prices. When short selling is not possible, competitive pressures among arbitrageurs rapidly drive prices to the equilibrium. However, the risk of margin calls slows the convergence process, because arbitrageurs who sell short too early face substantial losses if they are unable to synchronize their trades with other arbitrageurs (as in Abreu and Brunnermeier. 2002. Journal of Financial Economics 66(2–3):341–60; 2003. Econometrica …

Diversification To Mitigate Expropriation In The Tobacco Industry, Messod D. Beneish, Ivo Ph. Jansen, Melissa F. Lewis-Western, Nathan V. Stuart

Faculty Publications

While it is well established that diversifying acquisitions by large, cash-rich firms destroy shareholder wealth, we document positive abnormal returns to such acquisitions in the tobacco industry. We show that these abnormal returns are associated with proxies for lower expected expropriation costs. Specifically, we show that wealth creation increases in the degree of domestic geographic expansion afforded by the acquisition (increasing tobacco firms’ influence in more political districts) and in the liquidity of tobacco firms’ assets (converting cash to harder-to-expropriate operating assets). We also show that the threat of expropriation constrains payments to shareholders before expropriation becomes certain in 1998.

Nonresident Fathers’ Family Leisure Patterns During Parenting Time With Their Children, Alisha T. Swinton, Patti A. Freeman, Ramon B. Zabriskie, Paul J. Fields

Faculty Publications

The purpose of the study was to examine the leisure patterns of nonresident fathers while spending time with their child(ren), and to examine leisure constraints, leisure facilitators and nonresident fathers’ satisfaction with family leisure activities. Four instruments were used to collect the data. Family leisure involvement was measured using the Family Leisure Activity Profile (FLAP), leisure constraints were measured using the Nonresident Father Leisure Constraint Scale (NFLCS), leisure facilitators were measured using the Nonresident Fathers’ Leisure Facilitator Scale (NFLFS), and family leisure satisfaction was measured using the Family Leisure Satisfaction Scale (FLSS). The sample was nonresident fathers (N = 129) …

An Overview And Tutorial Of The Repertory Grid Technique In Information Systems Research, Aaron Mosiah Curtis, Taylor Michael Wells, Paul Benjamin Lowry, Trevor Higbee

Faculty Publications

Interest in the repertory grid technique has been growing in the IS field. This article seeks to inform the reader on the proper use and application of the technique in IS research. The methodology has unique advantages that make it suitable for many research settings. In this tutorial, we describe the technique, its theoretical underpinnings, and how it may be used by IS researchers. We conclude by detailing many IS research opportunities that exist in respect to the repertory grid technique.

Child–Adult Differences In Second-Language Phonological Learning: The Role Of Cross-Language Similarity, Wendy Baker-Smemoe, Pavel Trofimovich, James E. Flege, Molly Mack, Randall Halter

Faculty Publications

This study evaluated whether age effects on second language (L2) speech learning derive from changes in how the native language (L1) and L2 sound systems interact. According to the “interaction hypothesis” (IH), the older the L2 learner, the less likely the learner is able to establish new vowel categories needed for accurate L2 vowel production and perception because, with age, L1 vowel categories become more likely to perceptually encompass neighboring L2 vowels. These IH predictions were evaluated in two experiments involving 64 native Korean- and English-speaking children and adults. Experiment 1 determined, as predicted, that the Korean children were less …

Redefining The Edge, R Brown

School of Art, Design and Architecture

En (edge) is a distinguishing feature of traditional Japanese architecture; simultaneously inside and outside, the multi-layered external envelope performs a multiplicity of functions and embodies indigenous aesthetic and experiential sensibilities. The traditional form of en has however disappeared from contemporary Japanese architecture. This paper will frame en as a physical element and the roles and values it carries, and examine contemporary Japanese architecture’s move towards a more Westernised, conceptually-based, symbolic and introverted language. It will then consider some wider questions this raises on Japanese life and tradition, as well as the future of architecture in Japan.

Conscious And Unconscious Processes In Human Desire, J Andrade, J May, Dk Kavanagh

School of Psychology

Elaborated Intrusion theory (Kavanagh, Andrade & May 2005) distinguishes between unconscious, associative processes as the precursors of desire, and controlled processes of cognitive elaboration that lead to conscious sensory images of the target of desire and associated affect. We argue that these mental images play a key role in motivating human behavior. Consciousness is functional in that it allows competing goals to be compared and evaluated. The role of effortful cognitive processes in desire helps to explain the different time courses of craving and physiological withdrawal.

Digital Cs1 Study Pack Based On Moodle And Python, Atanas Radenski

Mathematics, Physics, and Computer Science Faculty Books and Book Chapters

We believe that CS1 courses can be made more attractive to students:

• by teaching a highly interactive scripting language – Python
• by using an open source course management system - such as Moodle - to make all course resources available in a comprehensive digital study pack, and
• by offering detailed self-guided online labs

We have used Moodle [1] and Python [2] to develop a "Python First" digital study pack [3] which comprises a wealth of new, original learning modules: extensive e-texts, detailed self-guided labs, numerous sample programs, quizzes, and slides. Our digital study pack pedagogy is described in recent ITiCSE …

Reduced Acute Inflammatory Responses To Microgel Conformal Coatings, Amanda W. Bridges, Neetu Singh, Kellie L. Burns, Julia E. Babensee, L. Andrew Lyon, Andrés J. García

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Implantation of synthetic materials into the body elicits inflammatory host responses that limit medical device integration and biological performance. This inflammatory cascade involves protein adsorption, leukocyte recruitment and activation, cytokine release, and fibrous encapsulation of the implant. We present a coating strategy based on thin films of poly(N-isopropylacrylamide) hydrogel microparticles (i.e. microgels) cross-linked with poly(ethylene glycol) diacrylate. These particles were grafted onto a clinically relevant polymeric material to generate conformal coatings that significantly reduced in vitro fibrinogen adsorption and primary human monocyte/macrophage adhesion and spreading. These microgel coatings also reduced leukocyte adhesion and expression of pro-inflammatory cytokines (TNF-alpha, IL-1 beta, …

Synthesis Of Multifunctional Nanogels Using A Protected Macromonomer Approach, Neetu Singh, L. Andrew Lyon

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Nanoparticles possessing multiple functionalities provide synthetic handles for varied surface chemistries, making them useful for a range of applications such as biotargeting and drug delivery. However, the combination of interfering functionalities on the same particle is often challenging. We have employed a synthetic scheme involving chemical protection/deprotection to combine interfering functional groups on the same hydrogel nanoparticle. The synthesis of amine-containing poly(N-isopropylacrylamide) nanogels was carried out via free radical precipitation polymerization by incorporating a Fmoc-protected amine poly(ethylene glycol) (PEG) macromonomer. The Fmoc group was then removed to obtain free amines, which were shown to be available for conjugation. We further …

Salt Marshes As A Source Of Chromophoric Dissolved Organic Matter (Cdom) To Southern California Coastal Waters, Catherine D. Clark, Liannea P. Litz, Stanley B. Grant

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

To determine chromophoric dissolved organic matter (CDOM) sources in Southern California coastal waters, optical properties of a river outlet and adjacent tidally flushed salt marshes were monitored (dry season; June July 2001). Average absorption coefficients doubled at ebb vs. flood tides (4.8 +/- 1.5 vs. 2.1 +/- 0.9 m(-1); 300 nm), suggesting significant salt marsh CDOM inputs into coastal waters. Average spectral slopes were not statistically different for any sites or tides (0.010 +/- 0.002 nm(-1)), consistent with salt marsh CDOM dominating coastal waters. Three-dimensional fluorescence excitation-emission matrices (EEMs) at ebb tide showed contributions from terrestrial, protein, and marine humic-like …

Interrupted Vs. Uninterrupted Training On Bmd During Growth, B. M. Goettsch, M. Z. Smith, J. A. O'Brien, G. V. Gomez, S. V. Jaque, Ken D. Sumida

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

This study compared a resistance training program where the exercise was uninterrupted (UT, i.e., continuous repetitions) against a resistance training program where the exercise was interrupted (IT, i.e., 3 exercise sessions during a training day) for enhancing bone modeling and bone mineral density (BMD) in maturating animals. The total volume of work performed between the two resistance training programs was equivalent by design. 24 young male rats were randomly divided into Control (Con, n = 8), UT (n = 8) and IT (n=8) resistance trained groups. The UT and IT groups were conditioned to climb a vertical ladder with weights …

Study Of Influence Of Process Parameters On The Deformation And Fracture Of 2024 Aluminum Alloy, Vijay B. Mandava

Theses and Dissertations

No abstract provided.

The Effects Of An Overhead Goal On Vertical Jump Heights, Stephanie R. Sellers

Theses and Dissertations

No abstract provided.

Gordon Henry's The Light People, Stuart C. Rieke

Theses and Dissertations

No abstract provided.

The Near-Infrared Spectroscopy Of Two Main Belt Asteroids, 418 Alemannia And 504 Cora, Chalbeth M. Reynolds

Theses and Dissertations

No abstract provided.

College Students' Attitudes Toward Singlehood, Lisa Peterson

Theses and Dissertations

No abstract provided.

Wind Field Retrievals Using Remotely-Sensed Precipitation Fields, Charles A. Chambers

Theses and Dissertations

No abstract provided.

Solid-State Nanocrystalline Gas Sensor Array Demonstration, Nathaniel Palenaka Ambler

Theses and Dissertations

No abstract provided.

Mentoring In Virtual Environments, Jacob Bell

Theses and Dissertations

No abstract provided.

The Effects Of Activity, Age And Injury On Ciliary Neurotrophic Factor Regulation In The Rat Supraoptic Nucleus, Jason M. Askvig

Theses and Dissertations

No abstract provided.