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531.
Over the last few decades, there has been a significant increase in the number of student service personnel, yet demand has outstripped this growth leading to turnover and low employee satisfaction. Scholars and practitioners alike have called for increased levels of empowerment of these workers, but the outcomes of this approach need further analysis. We utilize data from a survey of international centre directors in the United States and employ a partial least squares-based structural equation modelling to investigate the relationship between empowerment and employ perceptions including work satisfaction, organizational commitment, perspective of leadership and personal engagement. Specifically, trust meaning and personal consequence are strong components of empowerment in this sample. Our results indicate a positive relationship between empowerment and job satisfaction, organizational commitment and perspectives on leadership. In addition, we find that organizational commitment mediates the relationship between empowerment and personal engagement.  相似文献   
532.
The statement by Hunter R. Rawlings III that “there are no good studies on what constitutes bad online pedagogy” coincides with the creation of a Global Learning Council to define the guidelines that previous online educators have allegedly failed to identify. This article discusses these disparaging remarks by the President of the Association of American Universities about the distance education (DE) field and the likely influence on the Council’s deliberations by the motives of its members—American university presidents, corporate representatives, and providers of support for massive open online courses. The influence of their conclusions on public attitudes to new educational practices is anticipated, and the distorted pedagogical principles being offered in support of massive course practices are defined as arising from a form of plagiarism. A formal response by DE and online learning specialists to the rejection of their previous literature is encouraged; and an analysis of the situation is offered by a fictitious educational historian in the year 2031.  相似文献   
533.
The techniques used in massive open online courses (MOOCs) are compared with supersizing in the fast food industry. Similarities include the profit motives, marketing techniques, criticisms, industry defences, and evolution of the two controversies. While fast food restaurants strategically increase the size of their meal courses and consumer base, MOOC providers increase the size of their student enrolments and the amounts of online course material they provide for the students to consume. In the two contexts, franchise owners and educational administrators deliver the supersized courses to their customers with apparent disregard for their widening negative effects. Educational institutions are encouraged to consider the ethics of these practices in order to prevent the unmonitored spread of junk education.  相似文献   
534.
AIM: To analyze the multiple factors affecting the risk of maltreatment in young children within a comprehensive theoretical framework. METHODS: The research is based on a large UK cohort study, the Avon Longitudinal Study of Parents and Children. Out of 14,256 children participating in the study, 293 were investigated by social services for suspected maltreatment and 115 were placed on local child protection registers prior to their 6th birthday. Data on the children have been obtained from obstetric data and from a series of parental questionnaires administered during pregnancy and the first 3 years of life. Risk factors have been analyzed using an hierarchical approach to logistic regression analysis. RESULTS: In the stepwise hierarchical analysis, young parents, those with low educational achievement, and those with a past psychiatric history or a history of childhood abuse were all more likely to be investigated for maltreatment, or to have a child placed on the child protection register, with odds ratios between 1.86 and 4.96 for registration. Examining strength of effect, the highest risks were found with indicators of deprivation (3.24 for investigation and 11.02 for registration, after adjusting for parental background factors). Poor social networks increased the risk of both investigation (adjusted OR 1.93) and registration (adjusted OR 1.90). Maternal employment seemed to reduce the risk of both outcomes but adjusted odds ratios were no longer significant for registration. After adjusting for higher order confounders, single parents and reordered families were both at higher risk of registration. Reported domestic violence increased the risk of investigation and registration but this was no longer significant after adjusting for higher order variables. Low birthweight children were at higher risk of registration as were those whose parents reported few positive attributes of their babies. CONCLUSIONS: This study supports previous research in the field demonstrating that a wide range of factors in the parental background, socio-economic and family environments affect the risk of child maltreatment. By combining factors within a comprehensive ecological framework, we have demonstrated that the strongest risks are from socio-economic deprivation and from factors in the parents' own background and that parental background factors are largely, but not entirely, mediated through their impact on socio-economic factors.  相似文献   
535.
Fifty-four students were tested at specific time intervals over 10 years to determine best native language (NL) predictors of oral and written foreign language (FL) proficiency and FL aptitude. All participants completed two years of Spanish, French, or German. Each was administered measures of NL literacy, oral language, and cognitive ability in elementary school. A measure of FL aptitude was administered at the beginning of ninth grade and FL proficiency was evaluated at the end of the 10th grade. Among the variables, NL literacy measures were the best predictors of FL proficiency, and NL achievement and general (verbal) intelligence were strong predictors of FL aptitude. Results suggest that indices of NL literacy as early as first grade are related to FL proficiency and FL aptitude nine and 10 years later. Findings provide strong support for connections between L1 and L2 skills, and for speculation that “lower level” skills in phonological processing are important for written language development and oral proficiency in a FL.  相似文献   
536.
Although a low rolling resistance is advantageous in mountain bike cross-country racing, no studies have used the virtual elevation method to compare tyres from different manufacturers as used in international competitions so far. The aims of this study were to assess the reliability of this method, to compare the off-road rolling resistance between tyres and to calculate the influence on off-road speed.

Nine 29-in. mountain bike cross-country tyres were tested on a course representing typical ground surface conditions 5 or 6 times. The coefficient of rolling resistance was estimated with the virtual elevation method by 3 investigators and corresponding off-road speeds were calculated.

The virtual elevation method was highly reliable (typical error = 0.0006, 2.8%; limits of agreement <0.0005, r ≥ 0.98). The mean coefficient of rolling resistance was 0.0219 and differed from 0.0205 to 0.0237 (P < 0.001) between tyres. The calculated differences in off-road speed amounted to 2.9–3.2% (0% slope) and 2.3–2.4% (10% slope) between the slowest and the fastest tyre.

The reliability of the method and the differences in rolling resistance between the tyres illustrate the value of testing tyres for important competitions on a representative ground surface using the virtual elevation method.  相似文献   

537.
The objective was to investigate the relationship between Catechol-O-methyltransferase (COMT) rs4680 and serotonin-transporter-linked polymorphic region (5-HTTLPR) genotypes with concussion history and personality traits. Rugby players (“all levels”: n = 303), from high schools (“junior”, n = 137), senior amateur, and professional teams (“senior”, n = 166), completed a self-reported concussion history questionnaire, Cloninger’s Tridimensional Personality Questionnaire, and donated a DNA sample. Participants were allocated into control (non-concussed, n = 140), case (all) (previous suspected or diagnosed concussions, n = 163), or case (diagnosed only) (previous diagnosed concussion, n = 140) groups. COMT rs4680 Val/Val genotypes were over-represented in controls in all levels (= 0.013, OR:2.00, 95% CI:1.15–3.57) and in juniors (= 0.003, OR:3.57, 95% CI:1.45–9.09). Junior Val/Val participants displayed increased “anticipatory worry” (= 0.023). The 5-HTTLPR low expressing group was under-represented in controls when all levels were considered (= 0.032; OR:2.02, 95% CI:1.05–3.90) and in juniors (= 0.021; OR:3.36, 95% CI:1.16–9.72). Junior 5-HTTLPR low and intermediate expressing groups displayed decreased “harm avoidance” (= 0.009), “anticipatory worry” (= 0.041), and “fear of uncertainty” (< 0.001). This study provides preliminary indications that personality associated genetic variants can influence concussion in rugby.  相似文献   
538.
The purpose of this study was to investigate the effects of using an internal versus external focus of attention during resistance training on muscular adaptations. Thirty untrained college-aged men were randomly assigned to an internal focus group (INTERNAL) that focused on contracting the target muscle during training (n?=?15) or an external focus group (EXTERNAL) that focused on the outcome of the lift (n?=?15). Training for both routines consisted of 3 weekly sessions performed on non-consecutive days for 8 weeks. Subjects performed 4 sets of 8–12 repetitions per exercise. Changes in strength were assessed by six repetition maximum in the biceps curl and isometric maximal voluntary contraction in knee extension and elbow flexion. Changes in muscle thickness for the elbow flexors and quadriceps were assessed by ultrasound. Results show significantly greater increases in elbow flexor thickness in INTERNAL versus EXTERNAL (12.4% vs. 6.9%, respectively); similar changes were noted in quadriceps thickness. Isometric elbow flexion strength was greater for INTERNAL while isometric knee extension strength was greater for EXTERNAL, although neither reached statistical significance. The findings lend support to the use of a mind–muscle connection to enhance muscle hypertrophy.  相似文献   
539.
540.
  • A group of UK-based learned societies were anonymously interviewed to understand how trends are affecting their missions, strategies, and operations.
  • The societies' missions focus on supporting academics and disseminating knowledge, with publishing being a means to achieve those goals rather than an end in itself.
  • The responses were concerned about addressing open access (OA) but, particularly in the post-COVID-19 era, this was not necessarily their highest priority.
  • The societies expressed reliance on larger corporate publishers on them to navigate the transition to OA publishing.
  • The societies' focus is on evolving their missions to meet the changing needs of their academic communities, with issues around premises as a result of COVID-19 being more pressing than publishing industry changes.
  • The societies face challenges in adapting to the shift to online and digital operations, particularly in regards to maintaining engagement with their members.
  相似文献   
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