University of Arkansas

About: University of Arkansas is a education organization based out in Fayetteville, Arkansas, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 17225 authors who have published 33329 publications receiving 941102 citations. The organization is also known as: Arkansas & UA.

Measurement Error in Research on Human Resources and Firm Performance: Additional Data and Suggestions for Future Research

Abstract: Gerhart and colleagues (2000) and Huselid and Becker (2000) recently debated the presence and implications of measurement error in measures of human resource practices. This paper presents data from 3 more studies, 1 of large organizations from different industries at the corporate level, 1 from commercial banks, and the other of autonomous business units at the level of the job. Results of all 3 studies provide additional evidence that single respondent measures of HR practices contain large amounts of measurement error. Implications for future research into the HR firm performance relationship are discussed.

Surface runoff and tile drainage transport of phosphorus in the midwestern United States.

Abstract: The midwestern United States offers some of the most productive agricultural soils in the world. Given the cool humid climate, much of the region would not be able to support agriculture without subsurface (tile) drainage because high water tables may damage crops and prevent machinery usage in fields at critical times. Although drainage is designed to remove excess soil water as quickly as possible, it can also rapidly transport agrochemicals, including phosphorus (P). This paper illustrates the potential importance of tile drainage for P transport throughout the midwestern United States. Surface runoff and tile drainage from fields in the St. Joseph River Watershed in northeastern Indiana have been monitored since 2008. Although the traditional concept of tile drainage has been that it slowly removes soil matrix flow, peak tile discharge occurred at the same time as peak surface runoff, which demonstrates a strong surface connection through macropore flow. On our research fields, 49% of soluble P and 48% of total P losses occurred via tile discharge. Edge-of-field soluble P and total P areal loads often exceeded watershed-scale areal loadings from the Maumee River, the primary source of nutrients to the western basin of Lake Erie, where algal blooms have been a pervasive problem for the last 10 yr. As farmers, researchers, and policymakers search for treatments to reduce P loading to surface waters, the present work demonstrates that treating only surface runoff may not be sufficient to reach the goal of 41% reduction in P loading for the Lake Erie Basin.

Impacts of License Choice and Organizational Sponsorship on User Interest and Development Activity in Open Source Software Projects

Abstract: What differentiates successful from unsuccessful open source software projects? This paper develops and tests a model of the impacts of license restrictiveness and organizational sponsorship on two indicators of success: user interest in, and development activity on, open source software development projects. Using data gathered from Freshmeat.net and project home pages, the main conclusions derived from the analysis are that (1) license restrictiveness and organizational sponsorship interact to influence user perceptions of the likely utility of open source software in such a way that users are most attracted to projects that are sponsored by nonmarket organizations and that employ nonrestrictive licenses, and (2) licensing and sponsorship address complementary developer motivations such that the influence of licensing on development activity depends on what kind of organizational sponsor a project has. Theoretical and practical implications are discussed, and the paper outlines several avenues for future research.

An Empirical Investigation of Audit Fees, Nonaudit Fees, and Audit Committees*

Abstract: This stody examines the association between audit committee characteristics and the ratioof nonaudit service (NAS) fees to audit fees, using data gathered under the Secuiities andExchange Commission's (SEC's) fee disclosure rules. Issues related to NAS fees have beenof concern to practitioners, regulators, and academics for a number of years. Prior researchsuggests that audit committees possessing certain characteristics are important participantsin the process of managing the client—auditor relationship. We hypothesize that audit com-mittees that are independent and active financial monitors have incentives to limit NAS fees(relative to audit fees) paid to incumbent auditors, in an effort to enhance auditor indepen-dence in either appearance or fact. Our analysis using a sample of 538 flrms indicates thataudit committees comprised solely of independent directors meeting at least four timesamiually are significantly and negatively associated with the NAS fee ratio. This evidence isconsistent with audit committee members perceiving a high level of NAS fees in a negativelight and taking actions to decrease the NAS fee ratio.Keywords Audit committee; Audit fees; Auditor independence; Nonaudit seiYicesCoiidenseLes auteurs examinent le lien entre les caracteristiques du comite de verification et le rapportentre les honoraires des services autres que la verification (designes NAS — non-auditsenAces) et les honoraires des services de verification, a l'aide de donnees recueillies auxEtats-Unis, sous le regime des regies imposees par la Securities and Exchange Commission(SEC) en matiere d'ioformation a foumir sur les honoraires. Depuis bon nombre d'annees,les questions relatives aux honoraires des NAS preoccupent les praticiens, les responsablesde !a reglementation et ies chercheurs. La presente etude est motivee par deux decisions

Imiquimod 5% cream for the treatment of actinic keratosis: results from two phase III, randomized, double-blind, parallel group, vehicle-controlled trials

Abstract: Background The immune system plays a critical role in the development and pathogenesis of actinic keratosis (AK). Imiquimod has been shown to stimulate the cutaneous immune response and be effective for the treatment of nonmelanoma skin cancers. Objective Two phase III, randomized, double-blind, vehicle-controlled studies evaluated the efficacy of imiquimod 5% cream compared with vehicle in the treatment of AK lesions on the face and balding scalp. Methods A total of 436 participants at 24 centers in the United States and Canada were randomized to either imiquimod 5% or vehicle cream. Study cream was applied one time per day, 2 days per week for 16 weeks. Clearance of AK lesions was clinically assessed at an 8-week posttreatment visit. Results The complete clearance rate was 45.1% for the imiquimod group and 3.2% for the vehicle group. The difference in complete clearance rates (imiquimod minus vehicle) was 41.9% with a 95% confidence interval of 34.9% to 49%. The partial (≥75%) clearance rate was 59.1% for the imiquimod group and 11.8% for the vehicle group. The difference in partial clearance rates (imiquimod minus vehicle) was 47.3% with a 95% confidence interval of 39.5% to 55.1%. The median percent reduction in AK lesions was 83.3% for the imiquimod group and 0% for the vehicle group. Local skin reactions were common. Severe erythema was reported by 17.7% of participants who received imiquimod and 2.3% of participants who received vehicle. Overall, imiquimod was very well tolerated. Conclusion Imiquimod 5% cream used 2 times per week for 16 weeks is an effective and well-tolerated treatment for AK.