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The purpose of this investigation was to study the effects of an acute bout of aerobic exercise on state anxiety of women while controlling for iron status (hemoglobin and serum ferritin). Participants were 24 active women, ages 18-20 years (n = 12) and 35-45 years (n = 12). In addition to a nonexercise control condition, participants completed one exercise bout at 60% maximal oxygen uptake (VO2max) and one at 80% VO2max. Each exercise session consisted of a 33-min bout in which participants exercised at their target intensities for a 20-min segment. Immediately before each exercise trial, participants were given the Spielberger State Anxiety Inventory (SAI). The SAI was again administered immediately following the exercise session and at 30, 60, and 90 min postexercise. Data were analyzed using an Age x Intensity x Time (2 x 3 x 5) repeated measures analysis of covariance (ANCOVA) with iron status serving as the covariate. The ANCOVA on state anxiety yielded significant effects for time (p < .0001, eta2(p) = .48), the Intensity x Time interaction (p = .0006, eta2(p) = .19), and the Intensity x Age interaction (p = .04, eta2(p) = .15). All three exercise conditions (including control) showed a decline in state anxiety across time, but the 80% VO2max condition showed a sharper decline. Intensity of exercise conditions did not differ in state anxiety at baseline or immediately after exercise, but a difference favoring the 80% VO2max condition over the control condition emerged at 30 min postexercise. After controlling for iron status, older women who exercised at 80% VO2max exhibited lower SAI scores compared to the control condition. 相似文献
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Pam Fochtman 《Publishing Research Quarterly》2007,23(4):254-261
After settling in to his second term, Brazil’s president Lula da Silva has pledged to improve on his country’s woefully inadequate
education system. This means addressing illiteracy, which is one of Brazil’s most serious development issues. While Brazil
has the potential to be one of the world’s largest economies, it is hampered by high rates of functional illiteracy. Furthermore,
those that can read are non-readers. Consequently the Brazilian government has pledged to resolve illiteracy and launched
a nationwide reading program in 2005 with the optimistic goal of increasing the national reading rate by 50%. The article
analyzes the political risk in Brazil in light of the da Silva administration’s stated objectives. It will also assess the
impact of state literacy campaigns will have on the publishing industry and the potential for investment in the country. Finally,
it will discuss the importance of foreign investors in Brazil’s development goals. 相似文献
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Dr. des. Dirk Richter M.A. Prof. Dr. Mareike Kunter Prof. Dr. Oliver Lüdtke Prof. Dr. Uta Klusmann Prof. Dr. Jürgen Baumert 《Zeitschrift für Erziehungswissenschaft》2011,14(1):35-59
This study investigates the support that novice teachers receive from their mentors and peers during the teacher induction phase in Germany. It examines the relationship between the support of these two groups and the development of new teachers’ professional competencies. The sample comprises 551 novice teachers in mathematics, who were surveyed twice within one year during their induction period. Results show that both mentors and peers are perceived as providing important support, but that the two groups support different aspects of teaching competencies. Structural equation models indicate that informational and emotional support provided by mentors is associated with an increase in the teachers’ self-efficacy beliefs and a decline in their emotional exhaustion, whereas the support of peers has both positive and negative effects. 相似文献
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Whereas parasocial experience is conceptualized as imagined interaction identification is defined as the merging of one’s identity with a character’s. Thus, having a character face the camera and directly address viewers should increase the sense of parasocial experience but not affect the intensity of identification. An experiment compared the levels of parasocial experience and identification among viewers of clips from the show House of Cards that included or omitted direct address tested this prediction. Results provide support for the previously theorized conceptualdistinction between parasocial experience and identification. 相似文献
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Oliver Neumann Christian Matt Benedikt Simon Hitz-Gamper Lisa Schmidthuber Matthias Stürmer 《Government Information Quarterly》2019,36(4):101411
Creating public value is a key goal of public administrations, both in their daily business and in the growing field of smart government and smart cities, which focuses on IT-enabled innovations in the public sphere. However, many public administrations still struggle with such innovations due to complex technologies, high investments, and the numerous stakeholders involved. To address this issue, some local governments in continental Europe have turned to collaborative innovation approaches, partnering with (semi-)public utility companies in the hope that their additional innovation assets will boost innovativeness. Nevertheless, it remains unclear how exactly such collaborations should be governed to ensure that the focus remains on creating public value, as utility companies may have their own agendas. To explore this question, we conducted a comparative case study in the context of smart city initiatives with four cases in Swiss local governments. Drawing on agency and stewardship theory, we then propose a model of public-value-focused collaborative innovation, enabling us to explore various collaboration characteristics and their effects on public value creation. Our findings suggest that both agency- and stewardship-based collaborations increase innovativeness. However, while agency collaborations tend to produce smart city innovations that mainly serve the utility companies' business interests, stewardship relationships lead to innovations that are focused more on public value creation. As such, our study extends the literature on the effects of collaborative innovation on public value, and it provides practical recommendations on how such collaborative innovation should be designed. 相似文献