Digital Commons Network^™

Prediction Of Sawdust Pyrolysis Yields From A Flat-Flame Burner Using The Cpd Model, Aaron D. Lewis, Thomas H. Fletcher

Faculty Publications

High heating rate pyrolysis experiments were performed on a softwood sawdust in a flat-flame burner reactor at temperatures from 1163 to 1433 K with particle residence times ranging from 23 to 102 ms at atmospheric pressure. Volatile yields of the 45−75 μm sawdust were measured and are believed to be similar to those that would occur in an industrial entrained-flow combustor or gasifier. A refractory tar yield near 1.5 wt % (dry, ash-free) was measured. A high percentage of the fully pyrolyzed sawdust char was spherical, having lost the original sawdust structure. It is suggested that the morphology of sawdust …

Techno- Economic Analysis Of Wastewater Biosolids Gasification, Jason M. Porter, Nick Lumley, Robert Braun, Tzahi Cath, Ana Prietro, Dotti Ramey, Greta Buschmann

Faculty Publications

Wastewater treatment biosolids, commonly referred to as sludge, is a dilute suspension of micro-organisms, noxious organic matter, and mineral species in up to 99% water. Sludge is produced at about 250 mg/L of mixed municipal and light industrial wastewater treated. Management of this process stream can present a financial and environmental challenge for wastewater treatment plants (WWTPs), accounting for up to 15% of plant energy consumption. Operators of small urban WWTPs see the greatest challenge as their operations do not benefit from economies of scale, which permit larger facilities to absorb the costs or footprint of anaerobic digestion. This work …

The Effects Of Practice On The Concurrent Performance Of A Speech And Postural Task In Persons With Parkinson Disease And Healthy Controls, Christopher Dromey, K Bo Foreman, Stuart Sondrup, Eon Jarvis, Shawn Nissen, Leland E. Dibble

Faculty Publications

Purpose. Persons with Parkinson disease (PD) demonstrate deficits in motor learning as well as bidirectional interference (the performance of one task concurrently interferes with the performance of another task) during dual-task performance. Few studies have examined the practice dosages necessary for behavioral change in rehabilitation relevant tasks. Therefore, to compare the effects of age and PD on motor learning during dual-task performance, this pilot study examined persons with PD as well as neurologically healthy participants during concurrent performance of postural and speaking tasks. Methods. Seven persons with PD and 7 healthy age-matched and 10 healthy young control subjects were tested …

Interprofessional Education: A Pilot Study Of Rehabilitation Sciences Students Participating In Interdisciplinary International Service-Learning, Celia Pechak, Eugenia Gonzalez, Connie Summers, Stephanie Capshaw

Faculty Publications

Various models of interprofessional education, including service-learning, are used to teach students how to be effective members of healthcare teams. The purpose of this study was to examine pilot data related to the impact of an elective one-credit global health course with an international service-learning experience (ISL) on the student participants. An interdisciplinary team of 3 faculty accompanied 4 students representing occupational therapy, physical therapy, and speech-language pathology programs for an 8-day ISL experience. Students responded to faculty-developed reflection questions pre-travel, during travel, and 2-weeks and 4-months post travel. Content analysis was used to analyze themes that emerged from the …

Young People’S Experiences Of Living With Type 1 Diabetes, Tina M. Taylor, Cheryl Scholes, Barbara Mandleco, Susanne Roper, Karen Dearing, Donna Freeborn

Faculty Publications

Scholes C et al (2013) Young people’s experiences of living with type 1 diabetes. Nursing Times; 109: 45, 23-25. Young people with type 1 diabetes mellitus face a unique set of challenges: their own and their family’s perspectives of the disease and treatment impact on how well they manage metabolic control. Hormonal changes, desire for autonomy and emotional distress can influence self-management. This study aimed to better understand the perspective of young people with diabetes and to find out whether metabolic rate affects how individuals’ view the disease and treatment. The findings are used to make suggestions for treatment approaches.

Issues And Methods In Researching Social Networks: Tools, Trends, And Applications To Language Learning Research, Dan Dewey, Jennifer Brown, Shayla Johnson

Faculty Publications

No abstract provided.

The Knowledge, Experience, Skills, And Characteristics Tesol Employers Seek In Job Candidates, Caprice L. Bailey, Mark W. Tanner, Lynn E. Henrichsen, Dan Dewey

Faculty Publications

In a competitive marketplace, job candidates need to know what TESOL employers are seeking in new hires. A 12-month study of TESOL job announcements examined the types of work offered and the candidate knowledge, experience, skills, and personal characteristics TESOL employers were seeking in fulltime hires. An analysis of 169 job advertisements indicates that employers prefer applicants with knowledge and experience not only in teaching but also in curriculum development, teacher education, and program administration. Regarding candidates’ personal characteristics, employers seek individuals who have strong interpersonal and teamwork skills, as well as effective oral and written communication skills and computer …

Social Network Development During Study Abroad In Japan, Spencer A. Ring, Daniel Gardner, Dan Dewey

Faculty Publications

In this chapter, we investigate how students studying abroad in Japan form social networks. As Whitworth (2006) and Fraser (2002) have found, social networks can play an integral role in language proficiency development and language gains during study abroad (SA). However, much is yet to be understood regarding the processes by which SA students form social networks. The present study addresses this issue. Using the Study Abroad Social Interaction Questionnaire (SASIQ), we collected data regarding the social network formation of 204 students who studied abroad in Japan. Sample trends include students' participation in school and community clubs and social circles, …

Who Says There Is A High Consensus Among Analysts When Market Uncertainty Is High? Some New Evidence From The Commercial Real Estate Market, James D. Shilling, C. F. Sirmans, Barrett A. Slade

Faculty Publications

This paper seeks to determine whether analyst consensus is a function of the level of price informativeness, and therefore attempts to gauge the extent to which analyst consensus is high when market uncertainty is high. There is the view that a small or declining volume of trading implies less information and lower quality information, and that a lower level of price informativeness will lead analysts to put more weight on their private information at the time of forecasting. We add to this view the notion that when uncertainty is high there might be a positive option value of waiting. In …

Planning Prompts As A Means Of Increasing Preventive Screening Rates, Katherine L. Milkman, John Beshears, James J. Choi, David Laibson, Brigitte C. Madrian

Faculty Publications

In the U.S., 18,800 lives could be saved annually if those advised to obtain colorectal screenings based on national guidelines complied (Zauber et al., 2012). Subtle suggestions embedded in a decision-making environment can change people's choices (Thaler and Sunstein, 2008). Past research has shown that prompting people to form plans about where and when they will complete an intended behavior increases engagement in activities ranging from voting to vaccination (Gollwitzer and Sheeran, 2006; Milkman et al., 2011; Nickerson and Rogers, 2010). When plans are formed, they link intended behaviors with a concrete future moment and course of action, creating cues …

Matching Contributions And Saving Outcomes: A Behavioral Economics Perspective, Brigitte C. Madrian

Faculty Publications

Including a matching contribution increases savings plan participation and contributions, although the impact is less significant than the impact of nonfinancial approaches. Conditional on participation, a higher match rate has only a small effect on savings plan contributions. In contrast, the match threshold has a substantial impact, probably because it serves as a natural reference point when individuals are deciding how much to save and may be viewed as advice from the savings program sponsor on how much to save. Other behavioral approaches to changing savings plan outcomes—including automatic enrollment, simplification, planning aids, reminders, and commitment features—potentially have a much …

Testimonials Do Not Convert Patients From Brand To Generic Medication, John Beshears, James J. Choi, David Laibson, Brigitte C. Madrian, Gwendolyn Reynolds

Faculty Publications

Objectives—To assess whether the addition of a peer testimonial to an informational mailing increases conversion rates from brand-name prescription medications to lower-cost therapeutic equivalents, and whether the testimonial’s efficacy increases when information is added about an affiliation the quoted individual shares with the recipient.

Research Design and Methods—5,498 union members were randomly assigned to receive one of three different informational letters: one without a testimonial (No Testimonial Group), one with a testimonial from a person whose shared union affiliation with the recipient was not disclosed (Unaffiliated Testimonial Group), and one with a testimonial from a person whose shared union affiliation …

What Goes Up Must Come Down? Experimental Evidence On Intuitive Forecasting, John Beshears, James J. Choi, Andreas Fuster, David Laibson, Brigitte C. Madrian

Faculty Publications

Do laboratory subjects correctly perceive the dynamics of a mean-reverting time series? In our experiment, subjects receive historical data and make forecasts at different horizons. The time series process that we use features short-run momentum and long-run partial mean reversion. Half of the subjects see a version of this process in which the momentum and partial mean reversion unfold over 10 periods (‘fast’), while the other subjects see a version with dynamics that unfold over 50 periods (‘slow’). Typical subjects recognize most of the mean reversion of the fast process and none of the mean reversion of the slow process.

Consumers’ Misunderstanding Of Health Insurance, George Loewenstein, Joelle Y. Friedman, Barbara Mcgill, Sarah Ahmad, Suzanne Linck, Stacey Sinkula, John Beshears, James J. Choi, Jonathan Kolstad, David Laibson, Brigitte C. Madrian, John A. List, Kevin G. Volpp

Faculty Publications

We report results from two surveys of representative samples of Americans with private health insur-ance. The first examines how well Americans understand, and believe they understand, traditional healthinsurance coverage. The second examines whether those insured under a simplified all-copay insuranceplan will be more likely to engage in cost-reducing behaviors relative to those insured under a traditionalplan with deductibles and coinsurance, and measures consumer preferences between the two plans. Thesurveys provide strong evidence that consumers do not understand traditional plans and would betterunderstand a simplified plan, but weaker evidence that a simplified plan would have strong appeal toconsumers or change their …

Simplification And Saving, John Beshears, James J. Choi, David Laibson, Brigitte C. Madrian

Faculty Publications

The daunting complexity of important financial decisions can lead to procrastination. Weevaluate a low-cost intervention that substantially simplifies the retirement savings planparticipation decision. Individuals received an opportunity to enroll in a retirement savingsplan at a pre-selected contribution rate and asset allocation, allowing them to collapsea multidimensional problem into a binary choice between the status quo and the pre-selected alternative. The intervention increases plan enrollment rates by 10–20 percentagepoints. We find that a similar intervention can be used to increase contribution rates amongemployees who are already participating in a savings plan.

Planning Prompts As A Means Of Increasing Rates Of Immunization And Preventive Screening, Hengchen Dai, Katherine L. Milkman, John Beshears, James J. Choi, David Laibson, Brigitte C. Madrian

Faculty Publications

Building on psychological insights about the way people make decisions, behavioral scientists have proposed various methods to increase behaviors that promote welfare without limiting freedom of choice (Thaler & Sunstein, 2008). Recently, researchers have begun exploring the power of such methods for encouraging people to engage in beneficial health-related behaviors, particularly those that are often put off or forgotten (Loewenstein, Brennan, & Volpp, 2007). For example, motivated by evidence of substantial inertia at the status quo, researchers have demonstrated that if people are automatically assigned an appointment to receive a flu shot (while retaining the right to change or cancel …

Sb Ipos And Ipo Anomalies: An Empirical Analysis Of The Small Firm Uniqueness Hypothesis, James C. Brau, J. Troy Carpenter

Faculty Publications

The purpose of this paper is to provide a direct test of the small-firm uniqueness hypothesis advanced by Ang (1991). We do this by using the SB-IPO program of the SEC as our instrument to define a small firm. Having identified small firms, we test the three IPO anomalies to see if small firms differ from large firms along these dimensions. We find that SB IPOs experience the three anomalies; however, they do so in disparate ways than mainline IPOs do. In sum, we provide support for the small firm uniqueness hypothesis.

Revenge Of The Steamroller: Abcp As A Window On Risk Choices, Carlos Arteta, Mark Carey, Ricardo Correa, Jason Kotter

Faculty Publications

We empirically examine financial institutions’ motivations to take systematic bad-tail risk in the form of sponsorship of credit-arbitrage asset-backed commercial paper vehicles. A run on debt issued by such vehicles played a key role in causing and propagating the liquidity crisis that began in the summer of 2007. We find evidence consistent with important roles for both ownermanager agency problems and government-induced distortions, especially government control or ownership of banks.

Legislating Stock Prices, Lauren Cohen, Karl B. Diether, Christopher Malloy

Faculty Publications

We demonstrate that legislation has a simple, yet previously undetected, impact on stock prices. Exploiting the voting record of legislators whose constituents are the affected industries, we show that the votes of these “interested” legislators capture important information seemingly ignored by the market. A long-short portfolio based on these legislators' views earns abnormal returns of over 90 basis points per month following the passage of legislation. Industries that we classify as beneficiaries of legislation experience significantly more positive earnings surprises and positive analyst revisions in the months following passage of the bill, as well as significantly higher future sales and …

A Structural Model Of Human Capital And Leverage, Ryan Pratt

Faculty Publications

I study the effect of human capital on firms' leverage decisions in a structural dynamic model. Firms produce using physical capital and labor. They pay a cost per employee they hire, thus investing in human capital. In default a portion of this human capital investment is lost. The loss of human capital constitutes a significant cost of financial distress. Labor intensive firms are more heavily exposed to this cost and respond by using less leverage. Thus the model predicts a decreasing relationship between leverage and labor intensity. Consistent with this prediction, I show in the data that high labor intensity …

The Impact Of Securitization On The Expansion Of Subprime Credit, Taylor Nadauld, Shane M. Sherlund

Faculty Publications

This paper investigates the relationship between securitization activity and the extension of subprime credit. The analysis is motivated by two sets of compelling empirical facts. First, the origination of subprime mortgages exploded between the years 2003 and 2005. Second, the securitization of subprime loans increased substantially over the same time period, driven primarily by the five largest independent broker/dealer investment banks. We argue that the relative shift in the securitization activity of investment banks was driven by forces exogenous to factors impacting lending decisions in the primary mortgage market and resulted in lower ZIP code denial rates, higher subprime origination …

Is Your Susceptibility To Phishing Dependent On Your Memory?, Bonnie Brinton Anderson, Anthony Vance, David Eargle

Faculty Publications

Phishing has become a major attack vector for hackers and cost victims $687 million in the first half of 2012 alone. Additionally, despite technical solutions to defend against this threat, reports show that phishing attacks are increasing. There is therefore a pressing need to understand why users continue to fall victim to phishing, and how such attacks can be prevented. In this researchin- progress paper, we argue that the cognitive neuroscience of memory provides a useful lens through which to study the problem of phishing. A commonly reported finding from the field of memory is the eye movement-based memory effect, …

Evaluating Journal Quality And The Association For Information Systems (Ais) Senior Scholars’ Journal Basket Via Bibliometric Measures: Do Expert Journal Assessments Add Value?, Paul Benjamin Lowry, Gregory D. Moody, James Gaskin, Dennis F. Galletta, Sean L. Humpherys, Jordan B. Barlow, David W. Wilson

Faculty Publications

Information systems (IS) journal rankings and ratings help scholars focus their publishing efforts and are widely used surrogates for judging the quality of research. Over the years, numerous approaches have been used to rank IS journals, approaches such as citation metrics, school lists, acceptance rates, and expert assessments. However, the results of these approaches often conflict due to a host of validity concerns. In the current scientometric study, we make significant strides toward correcting for these limitations in the ranking of mainstream IS journals. We compare expert rankings to bibliometric measures such as the ISI Impact Factor™, the h-index, and …

Taking “Fun And Games” Seriously: Proposing The Hedonic-Motivation System Adoption Model (Hmsam), Paul Benjamin Lowry, Bryan Hammer, James Eric Gaskin, Tom L. Roberts, Nathan W. Twyman

Faculty Publications

Hedonic-motivation systems (HMS)—systems used primarily to fulfill users’ intrinsic motivations—are the elephant in the room for IS research. Growth in HMS sales has outperformed utilitarian-motivation systems (UMS) sales for more than a decade, generating billions in revenue annually; yet IS research focuses mostly on UMS. In this study, we explain the role of intrinsic motivations in systems use and propose the hedonic-motivation system adoption model (HMSAM) to improve the understanding of HMS adoption. Instead of a minor, general TAM extension, HMSAM is an HMS-specific system acceptance model based on an alternative theoretical perspective, which is in turn grounded in flow-based …

The Nature Of Adolescent Learner Interaction In A Virtual High School Setting, J. Borup, Charles R. Graham, R.S. Davies

Faculty Publications

This study used survey data to measure the effect of learners’ reported interactions with content, peers, and instructors on several course outcomes in two virtual high school courses that emphasized interactive learning. Surveys found that the large majority of students viewed all investigated types of interaction as educational and motivational. Students perceived learner–instructor and learner–content interactions to have significantly higher educational value (a < 0.01) than learner–learner interactions, and viewed learner–instructor interaction to be significantly more motivational (a < 0.01) than learner–content interaction. Furthermore, nine significant correlations were found involving the time students reported spending on human interaction and course outcomes. Seven of the significant correlations were related to the time students reported spending in human interaction and the more affective outcomes, such as course satisfaction and disposition towards the subject area. Outcomes also indicate that learner–learner interaction had higher correlations with course outcomes than learners’ interactions with the content or their instructor. Students’ perceived learning was not significantly correlated with any type of interaction, and only students’ total reported time spent on learner– learner interaction and students’ social learner–learner interaction were significantly correlated with their grade.

A Framework For Institutional Adoption And Implementation Of Blended Learning In Higher Education, Charles R. Graham, Wendy Woodfield, J. Buckley Harrison

Faculty Publications

There has been rapid growth in blended learning implementation and research focused on course-level issues such as improved learning outcomes, but very limited research focused on institutional policy and adoption issues. More institutional-level blended learning research is needed to guide institutions of higher education in strategically adopting and implementing blended learning on campus. This research investigates six cases of institutional adoption of blended learning to examine the key issues that can guide university administrators interested in this endeavor. Cases were selected to represent institutions at various stages of blended learning adoption including (1) awareness/exploration, (2) adoption/early implementation, and (3) mature …

Towards An Understanding Of The Role Of Standard Setters In Standard Setting, Abigail Allen, Karthik Ramanna

Faculty Publications

We investigate the effect of standard setters in standard setting. We examine how  certain professional and political characteristics of FASB members and SEC commissioners predict the accounting ‘‘reliability’’ and ‘‘relevance’’ of proposed standards. Notably, we find FASB members with backgrounds in financial services are more likely to propose standards that decrease ‘‘reliability’’ and increase ‘‘relevance,’’ partly due to their tendency to propose fair-value methods. We find opposite results for FASB members affiliated with the Democratic Party, although only when excluding financial services background as an independent variable. Jackknife procedures show that results are robust to omitting any individual standard setter.

The Nature Of Parental Interactions In An Online Charter School, Jered Borup, Charles R. Graham, Randall S. Davies

Faculty Publications

A belief commonly held in the K–12 education community is that parents can have a positive impact on their child’s learning. However, little research has examined parental involvement in an online learning environment. In this study, researchers using survey data found that generally students and parents viewed parent–instructor and learner–parent interactions as motivational. Students viewed learner–parent interaction as significantly more motivational than did their parents. The quantity of reported parental interactions was generally negatively correlated with course outcomes. These negative correlations may be the result of parents’ tendency to increase interaction levels following poor student performance and may not reflect …

An Analysis Of Research Trends In Dissertations And Theses Studying Blended Learning, Jeffrey S. Drysdale, Charles R. Graham, Kristian J. Spring, Lisa R. Halverson

Faculty Publications

This article analyzes the research of 205 doctoral dissertations and masters' theses in the domain of blended learning. A summary of trends regarding the growth and context of blended learning research is presented. Methodological trends are described in terms of qualitative, inferential statistics, descriptive statistics, and combined approaches to data analysis. Research topics are divided into nine topics (learner outcomes, dispositions, instructional design, interaction, comparison, demographics, technology, professional development, and other), each containing several sub-topics. Patterns in these topics are analyzed to identify gaps in research and to highlight opportunities for future research as the field of blended learning continues …

The Influence Of Asynchronous Video Communication On Learner Social Presence: A Narrative Analysis Of Four Cases, Jered Borup, Richard E. West, Charles R. Graham

Faculty Publications

Online courses are increasingly using asynchronous video communication. However, little is known about how asynchronous video communication influences students’ communication patterns. This study presents four narratives of students with varying characteristics who engaged in asynchronous video communication. The extrovert valued the efficiency of making video comments but saw little value in viewing the video comments of her peers. Somewhat inversely, the English language learner valued the video comments of her peers but lacked the ability to fully participate herself. The introverted student valued the flexibility and richness of asynchronous video but spent an inordinate amount of time recording her videos. …