Structural and performance patterns

Author(s):  
Magdi S. Mahmoud ◽  
Yuanqing Xia
2012 ◽  
Vol 22 (6) ◽  
pp. 444-451 ◽  
Author(s):  
Rochelle D. Kirwan ◽  
Lindsay K. Kordick ◽  
Shane McFarland ◽  
Denver Lancaster ◽  
Kristine Clark ◽  
...  

Purpose:The purpose of this study was to determine the dietary, anthropometric, blood-lipid, and performance patterns of university-level American football players attempting to increase body mass during 8 wk of training.Methods:Three-day diet records, body composition (DEXA scan), blood lipids, and performance measures were collected in redshirt football players (N = 15, age 18.5 ± 0.6 yr) early season and after 8 wk of in-season training.Results:There was an increase (p < .05) from early-season to postseason testing for reported energy (+45%), carbohydrate (+82%), and protein (+29%) intakes and no change in the intake of fat. Fat intake was 41% of energy at the early-season test and 32% of energy at the postseason test. Increases (p < .05 for all) in performance measures, lean mass (70.5 ± 7.7–71.8 ± 7.7 kg), fat mass (15.9 ± 6.2–17.3 ± 6.8 kg), plasma total cholesterol (193.5 ± 32.4–222.6 ± 40.0 mg/dl), and low-density lipoproteins (LDL; 92.7 ± 32.7–124.5 ± 34.7 mg/dl) were measured. No changes were measured in triglycerides, very-low-density lipoproteins, or high-density lipoproteins.Conclusion:Increases in strength, power, speed, total body mass, muscle mass, and fat mass were measured. Cholesterol and LDL levels increased during the study to levels associated with higher risk for cardiovascular disease. It is possible that this is a temporary phenomenon, but it is cause for concern and an indication that dietary education to promote weight gain in a manner less likely to adversely affect the lipid profile is warranted.


The authors study the performance consequences of exposure to corporate social responsibility (CSR) through stock holdings for mutual funds. Using a large sample of US domestic mutual funds, they find that funds overweighting low-CSR stocks outperform funds underweighting them by 1.7% to 2.6% annually. This outperformance, however, reverses during the 2008-2009 financial crisis. They also find similar performance patterns among stocks. An equal-weighted high-minus-low CSR stock return spread can explain the CSR-based fund performance spread, whereas a value-weighted spread cannot. These results are consistent with the interpretation that low-CSR funds overweight low-CSR small-cap stocks that offer high returns to investors who are averse to low-CSR investments. Investors tend to avoid low-CSR stocks due to either social norms against these stocks or risk of underperformance of these investments when overall trust in corporations suffers a negative shock (such as during a financial crisis).


Author(s):  
Abi Brooker ◽  
Linda Corrin ◽  
Paula De Barba ◽  
Jason Lodge ◽  
Gregor Kennedy

Recent scholarly discussions about massive open online courses (MOOCs) highlight pedagogical and practical issues that separate MOOCs from other learning settings, especially how theories of learning translate to MOOC students’ motivation, participation, and performance. What is missing from these discussions is the purpose of the MOOC. We report a comparative study of two MOOCs that differ in educational purpose, but are similar in design. Our sample consisted of 983 students in a professional development MOOC, and 648 students in a MOOC focused on general interest. We first report differences between the two MOOCs, in terms of student demographics, achievement motivation, and participation. For each MOOC, we ran a two-stage regression analysis to determine the extent to which motivation variables (stage 1) and participation variables (stage 2) predicted performance. Patterns in demographic background and motivation differed in ways that were consistent with the MOOCs' purposes. Motivation and participation predicted performance, but this relationship differed between the two MOOCs and reflected the patterns of participation. Professional development motivation contributed to final grade in the professional development MOOC, but not the general interest MOOC. The findings have implications for how MOOC designers think about their target audience, and for students who aim for high final grades.


1997 ◽  
Vol 2 (1) ◽  
pp. 1-64 ◽  
Author(s):  
Lane Kenworthy

Convergence among national economies is viewed by a growing number of observers as an inevitable result of increasing global integration of product and financial markets. Yet there is reason to doubt that globalization has yet brought about, or will in the future bring about, the degree of convergence assumed by some. First, markets require effectiveness, not optimality. This allows considerable space for continued differences in national economic policy choices, institutional structures, and performance patterns. Second, domestic institutions mediate the impact of international market forces. Institutions differ markedly across countries, generating substantial cross-national variation in the preferences and capacities of economic actors (firms, unions, policy makers, and so on). To assess the convergence thesis empirically, I examine developments in the 17 richest industrialized nations from 1960 to 1994. There is some indication of convergence in a few areas, but it is limited. This appears to owe partly to the fact that globalization itself remains limited and in part to the fact that globalization's convergence-generating effects are limited.


1992 ◽  
Vol 36 (1) ◽  
pp. 106-110
Author(s):  
Kathy McCloskey ◽  
Stephen Popper ◽  
Daniel Repperger ◽  
Lloyd Tripp

The effects of long term exposure to a high g simulated aerial combat maneuver (SACM, or alternating peaks of +4.5Gz to +7.0Gz) were examined using blood oxygen saturation (SAO2) levels and performance measures (RTs, error rates, and comfort ratings). Four different anti-g protection device configurations were evaluated: the standard issue CSU-13 B/P anti-g suit, an experimental retrograde inflation anti-g suit (RIAGS), the RIAGS with capstan sleeves, and the RIAGS with occlusion cuffs. Overall, RIAGS with sleeves allowed subjects to endure much longer times at high g. However, when SA02 levels were correlated with time to exhaustion, there were no differences between protective suit configurations. RIAGS with sleeves appeared to lead to a slower decrement in blood oxygen saturation levels during long term exposure, allowing subjects to remain at high g longer. It was also shown that SA02 levels “rebounded” to some extent before each of the next +7Gz onsets, but when subjects approached their endurance limits this rebound effect diminished. It seems the longer subjects endured high g, the less able they were to physiologically compensate. The simplest task condition showed an increased in RT when subjects neared their exhaustion point. The more difficult task conditions showed too much variability in RTs to discern any performance patterns. It seemed enough effort and attention was directed to the task to maintain stable performance in the easy condition, but was not enough to maintain performance in the more difficult conditions. Error rates also increased as subjects neared exhaustion, as expected. However, error rates were sensitive to differences among suit configurations, whereas RTs were not. Error rates covaried with time at SACM and comfort ratings. In summary, subjects wearing RIAGS with sleeves withstood high g for longer periods of time, had less error in their performance, and rated the suit most comfortable.


2015 ◽  
Vol 9 (3) ◽  
pp. 259-292 ◽  
Author(s):  
JOSÉ ANTONIO BOWEN

AbstractThis essay explores the multiple histories, traditions, and authorities present in more than 200 recorded performances of “Body and Soul.” The early recordings (dozens of them from 1930 alone) demonstrate both enormous variety and distinct British and American performance patterns, but few of these innovations survive beyond 1940. Coleman Hawkins's version from 1939, and not the original sheet music or early performance history, set a standard key (D-flat—even for singers!) and a slower standard tempo (quarter = 90, although later it became even slower). Charlie Parker and others in the 1940s, however, were influenced by the Chu Berry and Roy Eldridge recording of 1938, which introduced a “jump” chorus widely reproduced for two decades. Billie Holiday determined which set of lyrics would be sung, but not the form in which they would occur. John Coltrane and McCoy Tyner's new modal approach in 1960 created both direct imitators and also a new tradition of trying to neutralize the harmonic complexity of the tune, which Hawkins had so carefully exploited. This study asks whether a more African and less European model of jazz tunes might reveal a less fixed and more complex notion of a musical work that includes orally preserved and recorded innovations and performance traditions. This research also explores how the record itself, as a physical object, has become an authority.


2016 ◽  
Vol 11 (1) ◽  
pp. 81-106 ◽  
Author(s):  
Max Stille

This article argues that conceptual change can be brought about and shaped by communication practice by approaching emotional experience in a particular strand of Islamic sermons from contemporary Bangladesh. It utilizes an extended rhetorical analysis, pertaining to the intertwining of concepts to be communicated, concepts of communication, and performance patterns of the sermons. It argues that by the juncture of narrative techniques of immediacy and momentarization with a bodily grounding of the voice, the listeners and preacher jointly reach the self-affection of the bodily and salvific emotions of (com)passion. From this perspective, the role of rhetorical practice is not limited to an ex post facto translation of conceptual change into practice; instead, the rhetorical goal of self-affection turns out to be an active factor in shaping concepts decisive for contemporary Islamic religiosity.


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