Observation Points: The Visual Poetics of National Parks. Thomas Patin,Editor. Minneapolis: University of Minnesota Press, 2012.     

Charlotte L. Quinney 《Journal of American culture (Malden, Mass. : 2003)》2013,36(2):148-149

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Athens 2004: the pollution climate and athletic performance     

Florida-James G  Donaldson K  Stone V 《Journal of sports sciences》2004,22(10):967-80; discussion 980

Athens sits in a basin approximately 450 km2 in area, surrounded by mountains and open sea. Anthropogenic emissions in conjunction with the topographical and meteorological conditions can result in high air pollution within the city. The pollutants of concern for athletes competing in Athens 2004 appear to be nitrogen dioxide (NO2), ozone and particulate (PM10) pollution. Exposure to elevated ozone concentrations has been reported to give rise to symptoms that include cough, chest pain, difficulty in breathing, headache, eye irritation and a decrease in forced expiratory volume in one second. All of these effects are likely to impact upon performance, and several studies of cyclists suggest this to be the case. In contrast, the impact of ambient concentrations of NO2 appears to be negligible on normal activities, but at high exercise intensities the impact remains unclear. The use of currently available information and models to predict the effect of ozone and other pollutants on elite athletes is problematical, since such models are based upon significantly lower ventilation rates than those achieved by some elite athletes. In addition, it is already known that the response to ozone can vary somewhat between individuals. Since the individuals who will be competing in Athens are physiologically very different to the participants in most published studies, it is difficult to predict individual responses. There is some evidence to indicate that adaptation to the adverse health and performance effects of ozone can occur, so that performance is partially recovered on re-exposure. The adaptation is not seen in all studies and appears to be dependent on several factors, including the initial sensitivity of the individual to ozone. Antioxidant supplementation has also been shown in some studies to partially ameliorate the adverse effects of ozone by counteracting the oxidative stress mechanism associated with this pollutant. Whether this transfers to performance enhancement per se remains unclear at present. Additional research is required to gain a sound understanding of the effects of a complex mixed air pollution exposure on the pulmonary function and performance of athletes exercising at high work intensities.  相似文献   

Training principles: evaluation of modes and methods of resistance training--a coaching perspective   总被引：1，自引：0，他引：1  

Stone M  Plisk S  Collins D 《Sports biomechanics / International Society of Biomechanics in Sports》2002,1(1):79-103

Current information and evidence indicate that for most activities free weight training can produce superior results compared to training with machines, particularly when the free weight training involves complex, multi-joint exercises. A number of reasons can account for the superiority of free weights; the major factor deals with mechanical specificity. Mechanical specificity is concerned with appropriate movement patterns, force application and velocity of movement. Considering the available evidence that adherence to the concept of specificity of exercise and training can result in a greater transfer of training effect then free weights should produce a more effective training transfer. Therefore, the majority of resistance exercises making up a training programme should include of free weight exercises with emphasis on mechanical specificity (i.e. large muscle mass exercises, appropriate velocity, contraction type etc.). Generally, machines should be used as an adjunct to free weight training and, depending upon the sport, can be used to a greater or lesser extent during various phases of the training period (preparation, pre-competition, competition).  相似文献   

"Ask A Librarian": the experiences of four hospital libraries     

Stone ME  Foxman C  Sostack M  Francar L  Hall P  Markwell LG 《Medical reference services quarterly》2003,22(2):93-105

The librarians at four hospital libraries describe the electronic reference service, "Ask A Librarian," offered at their institutions. The hospitals are vastly different in size and in number of library staff, and offer the "Ask A Librarian" service to different clientele. The article illustrates that both large hospitals with a large library staff and small hospitals with a solo librarian and some volunteers can offer this type of service.  相似文献   

The walkabout gene     

Charlotte Epstein 《The Urban Review》1976,9(2):141-144

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But I like PE: factors associated with enjoyment of physical education class in middle school girls     

Barr-Anderson DJ  Neumark-Sztainer D  Schmitz KH  Ward DS  Conway TL  Pratt C  Baggett CD  Lytle L  Pate RR 《Research quarterly for exercise and sport》2008,79(1):18-27

The current study examined associations between physical education (PE) class enjoyment and sociodemographic, personal, and perceived school environment factors among early adolescent girls. Participants included 1,511 sixth-grade girls who completed baseline assessments for the Trial of Activity in Adolescent Girls, with 50% indicating they enjoyed PE class a lot. Variables positively associated with PE class enjoyment included physical activity level, perceived benefits of physical activity, self-efficacy for leisure time physical activity, and perceived school climate for girls' physical activity as influenced by teachers, while body mass index was inversely associated with PE class enjoyment. After adjusting for all variables in the model, PE class enjoyment was significantly greater in Blacks than in Whites. In model testing, with mutual adjustment for all variables, self-efficacy was the strongest correlate of PE class enjoyment, followed by perceived benefits, race/ethnicity, and teachers' support for girls' physical activity, as compared to boys, at school. The overall model explained 11% of the variance in PE class enjoyment. Findings suggest that efforts to enhance girls' self-efficacy and perceived benefits and to provide a supportive PE class environment that promotes gender equality can potentially increase PE class enjoyment among young girls.  相似文献   

Optimal search strategies for identifying moderators and predictors of treatment effects in PubMed     

Marcia Tummers  Ralph van Hoorn  Charlotte Levering  Andrew Booth  Gert Jan van der Wilt  Wietske Kievit 《Health information and libraries journal》2019,36(4):318-340

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Language teaching through the ages     

Charlotte V.T. Murakami 《History of education》2015,44(3):399-400

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Care in academia: an exploration of student parents’ experiences     

Marie-Pierre Moreau  Charlotte Kerner 《British Journal of Sociology of Education》2015,36(2):215-233

While student parents now represent a significant proportion of the higher education population in England, this group has been given limited consideration in policy circles. Using a social constructivist and feminist theoretical framework, this paper draws on a research project investigating the role of higher education policies in supporting student parents in England. It focuses on findings from 40 interviews conducted with student parents enrolled on university programmes. It shows that, in the context of the default construction of the university student as carefree, student parents often describe their experience of navigating academia as a struggle, in which time-related, financial, health and emotional problems prevail. However, the stories they tell also emphasise the benefits associated with their dual status. By doing so, they resist the discourse of deficit typically applied to ‘non traditional’ students and produce a counter-discourse that disturbs the long-lived binary opposition between care and academia.  相似文献   

The impact of various creative initiatives on wellbeing: a study of children in English primary schools     

Maurice Galton  Charlotte Page 《Cambridge Journal of Education》2015,45(3):349-369

The following paper builds uon a survey of primary students’ wellbeing in an attempt to assess the impact of various creative initiatives on this aspect of their lives. Three case studies were conducted in schools with some of the highest aggregate wellbeing scores, all three schools having also been engaged in various extended Creative Partnership programmes. Teachers, Creative Practitioners and students were interviewed and observed during both normal lessons and Creative Partnership activities. It is posited that the implementation of creative activities under the framework adopted by Creative Partnership enhances both hedonic and eudaimonic aspects of wellbeing and accords with theories of motivation which stress the value of promoting student competencies and autonomy and creating classroom climates which promote connectedness.  相似文献