The Interplay of Organizational Demography and Institutional Change

Our paper analyzes the interplay of organizational demography with the propensity to adopt an innovative practice. In particular, we examine how the demographical composition of professional German football teams influenced the adoption of the chain-defense-system (?Viererkette?) as well as the success of implementing this system. In doing so we strongly believe that the underlying relationship between organizational demography and the innovation diffusion process is not only relevant for football teams: Other smaller organizations or profit centers whose team structures seem comparable to those of football teams might be subject to similar processes. We hypothesize that a high level of team heterogeneity leads to a greater propensity to change. We also hypothesize that homogeneous teams are more successful in executing a new practice once they have overcome their skepticism. Our results support the hypotheses on change, but do not provide final support for our hypothesis on performance. --Organizational Behavior,Economics of Sports,Innovation and Invention,Diffusion Process,Duration Analysis,Performance Analysis

Examining Doctoral Attrition: A Self-Determination Theory Approach

Doctoral student attrition is a troubling and costly phenomenon. Alarmingly, 40-60% of doctoral students will not complete their Ph.D. Several explanations for this high and persistent attrition rate have been discussed in the extant literature, including questioning the quality, mental health, and motivation of doctoral students. However, stricter admission standards and empirical evidence provide little support that any one of these current explanations is adequate on its own. Empirical clues suggest that Self-Determination Theory may be useful in trying to understand the doctoral attrition phenomenon. Self- Determination Theory is presented and used as a framework to identify potential causes and barriers in the doctoral student experience that may lead to drop out. These issues are discussed and preliminary suggestions for potential strategies to rectify these issues are given

The Examination of Nonparametric Person-Fit Statistics as Appropriate Measures of Response Bias in Ordered Polytomous Items

Survey research is ubiquitous within the social sciences; however, surveys are vulnerable to response biases. Response biases introduce construct-irrelevant variance into survey responses, which degrades the accuracy of conclusions drawn through the use of surveys. Nonparametric person-fit statistics have been shown to accurately identify response biases in dichotomous response data but are not well studied in polytomous response data. This study examines the accuracy of nonparametric person-fit statistics in polytomous response data. A 6 x 4 x 4 x 2 simulation study was conducted, with type of aberrancy (6), number of response options (4), dimensionality (4), and test length (2) as factors. The sensitivity, specificity, positive predictive value, and negative predictive value for U3, the normed number of Guttman errors, and HTi were calculated using a bootstrapped cutoff. Findings indicate that these person-fit statistics with a conservative cutoff had excellent specificity but poor sensitivity. Advisor: Kurt F. Geisinge

Examining Doctoral Attrition: A Self-Determination Theory Approach

Doctoral student attrition is a troubling and costly phenomenon. Alarmingly, 40-60% of doctoral students will not complete their Ph.D. Several explanations for this high and persistent attrition rate have been discussed in the extant literature, including questioning the quality, mental health, and motivation of doctoral students. However, stricter admission standards and empirical evidence provide little support that any one of these current explanations is adequate on its own. Empirical clues suggest that Self-Determination Theory may be useful in trying to understand the doctoral attrition phenomenon. Self- Determination Theory is presented and used as a framework to identify potential causes and barriers in the doctoral student experience that may lead to drop out. These issues are discussed and preliminary suggestions for potential strategies to rectify these issues are given

An Evidence-Based Approach to a Replacement Hospital Training Curriculum

Creation of a training and educational curriculum for a new or replacement facility is daunting in its own right, but without a repository of organizational knowledge cataloging the transfer of tacit to explicit knowledge from the organizations previous library of facility openings, the task becomes Herculean, with as many tasks and cast of characters as the original myths. Navigating the shoals, eddies and tides of the various aspects of this project revealed the need for a comprehensive knowledge management solution to training that is coupled with healthcare design principles and initiatives. This purpose of the DNP project is about the assessment, design, implementation and evaluation of a major training program to prepare for a new hospital opening

Efficient Follow-Up of Exoplanet Transits Using Small Telescopes

11 pages, 5 figures, to be published in PASP, comments welcomeHere, we introduce an online tool for the prediction of exoplanet transit light curves. Small telescopes can readily capture exoplanet transits under good weather conditions when the combination of a bright star and a large transiting exoplanet results in a significant depth of transit. However, in reality there are many considerations that need to be made to obtain useful measurements. This paper and the accompanying website lay out a procedure based on timeseries differential photometry that has been successfully employed using 0.4 m aperture telescopes to predict the expected precision for a whole light curve. This enables robust planning to decide whether the observation of a particular exoplanet transit should be attempted, and in particular to be able to readily see when it should not to be attempted. This may result in a significant increase in the number of transit observations captured by non-specialists. The technique and website are also appropriate for planning a variety of variable star observations where a prediction of the light curve can be made.Peer reviewe

Examining Grit Like Qualities in NFL QBs

International Journal of Exercise Science 13(5): 912-923, 2020. In order to excel in the National Football League (NFL) it would seem reasonable to assume an athlete has grit which consists of the constructs of consistency of interest and perseverance of effort. Grit-like qualities such as endurance, urgency and intensity, self-confidence, need for encouragement, and self-criticality may be of particular value for the athlete playing the Quarterback (QB) position. The purpose of the study was to assess the 5 grit-like constructs of endurance, urgency and intensity, self-confidence, need for encouragement, and self-criticality among NFL QBs. The Flippen ProfileTM assessment was administered to 29 NFL QBs and the 5 grit-like constructs were recorded. Each of the 5 grit-like constructs were scored on a scale of 0-100, where high scores were considered desirable for endurance, urgency and intensity, and self-confidence, while lower scores were considered as desirable for need for encouragement, and self-criticality. The scores for each of the 5 grit-like constructs were then partitioned by three categories of QB years played: 1-2 (n=8), 3-7 (n=13), and ≥8 (n=8) years. Four key findings emerged following the analysis: the NFL QBs scored favorably on all of the 5 grit-like constructs independent of years played, QBs with ≥8 years’ experience scored the most favorably for endurance and the need for encouragement, QBs with 1-2 years’ experience scored the most favorably for self-criticality. These results may provide coaches and athletes aspiring to play QB in the NFL with benchmarks regarding the 5 grit-like constructs that are associated with successful NFL QBs

Destabilization of α-helical structure in solution improves bactericidal activity of antimicrobial peptides: Opposing effects on bacterial and viral targets

We have previously examined the mechanism of antimicrobial peptides on the outer membrane of vaccinia virus. Here we show that the formulation of peptides LL37 and magainin-2B amide in polysorbate 20 (Tween-20™) results in greater reductions in virus titre than formulation without detergent, and the effect is replicated by substitution of polysorbate 20 with high ionic strength buffer. In contrast, formulation with polysorbate 20 or high ionic strength buffer has the opposite effect on bactericidal activity of both peptides, resulting in lesser reductions in titre for both gram-positive and gram-negative bacteria. Circular dichroism spectroscopy shows that the differential action of polysorbate 20 and salt on the virucidal and bactericidal activities correlates with the α-helical content of peptide secondary structure in solution, suggesting that the virucidal and bactericidal activities are mediated through distinct mechanisms. The correlation of a defined structural feature with differential activity against a host-derived viral membrane and the membranes of both gram-positive and gram-negative bacteria suggests that overall helical content in solution under physiological conditions is an important feature for consideration in the design and development of candidate peptide-based antimicrobial compounds