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111.
Warren D. Allmon 《Curator: The Museum Journal》1994,37(2):83-89
The value of museum natural history collections is commonly poorly explained to, and therefore commonly misunderstood by, the general public. This is an increasingly dangerous situation at a time of tight fiscal constraints; if natural history collections are to survive, those charged with their care will have to do more to broadcast their value as both resources for research and public education. Research values include documenting biotas no longer available and present and past biogeographic distributions, housing type, voucher specimens, and (perhaps most importantly) serving as fertile places for scientific discovery and inspiration. Public values include serving as resources for identification of unknown specimens, hands-on education and the support of systematics, and (perhaps most importantly) as the depository for the final physical evidence for the history and diversity of life on Earth. 相似文献
112.
Lucas SJ Anglem N Roberts WS Anson JG Palmer CD Walker RJ Cook CJ Cotter JD 《Journal of sports sciences》2008,26(5):477-489
The aim of this study was to determine the magnitude and pattern of intensity, and physiological strain, of competitive exercise performed across several days, as in adventure racing. Data were obtained from three teams of four athletes (7 males, 5 females; mean age 36 years, s = 11; cycling .VO(2 peak) 53.9 ml . kg(-1) . min(-1), s = 6.3) in an international race (2003 Southern Traverse; 96 - 116 h). Heart rates (HR) averaged 64% (95% confidence interval: +/- 4%) of heart rate range [%HRR = (HR - HR(min))/(HR(max) - HR(min)) x 100] during the first 12 h of racing, fell to 41% (+/-4%) by 24 h, and remained so thereafter. The level and pattern of heart rate were similar across teams, despite one leading and one trailing all other teams. Core temperature remained between 36.0 and 39.2 degrees C despite widely varying thermal stress. Venous samples, obtained before, during, and after the race, revealed increased neutrophil, monocyte and lymphocyte concentrations (P < 0.01), and increased plasma volume (25 +/- 10%; P < 0.01) with a stable sodium concentration. Standardized exercise tests, performed pre and post race, showed little change in the heart rate-work rate relationship (P = 0.53), but a higher perception of effort post race (P < 0.01). These results provide the first comprehensive report of physiological strain associated with adventure racing. 相似文献
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John Warren Stewig 《Children‘s Literature in Education》1995,26(2):119-133
Conclusion In these books and others (see Related Reading), we find a richly varied portrayal of the wise/witch woman. Sometimes these
women work alone, as inThe Earth Witch. Sometimes they work with a single apprentice, as in The Ghost Drum. At other times they live in community, as inSnow-Eyes. Sometimes their work is primarily beneficent, as inSnow-Eyes. Sometimes it is primarily evil, as inThe Earth Witch. And at other times it is a mixture, depending on what evokes the magic, as inThe Ghost Drum. Often these women possess simple herb lore; all three books feature main characters with this ability. Sometimes the abilities
are more complex. They may be complex physical abilities. For example, Chingis inThe Ghost Drum can reinhabit and bring to a semblance of life a dead body. Sometimes the complex abilities are mental. Bronwen inThe Earth Witch is able to make Owen forget his friends and family, desiring only to be with her. An interesting feature of these powerful
women is that their abilities are always limited in some way. InThe Ghost Drum, Chingis cannot write the spells of the drum. Bronwen inThe Earth Witch cannot prevent herself from growing old. And inSnow-Eyes, the servitors cannot call the rains unless they act together. In these fantasies and others published recently, we find
an impressive array of abilities, making the witch/wise woman one of the most interesting characters in this genre.
and a past president of the Wisconsin, and the National Council of Teachers of English. His most recent book isLooking at Picture Books (Highsmith Press), and his children's picture book,Princess Florecita and the Iron Shoes is forthcoming from Apple Soup Books. 相似文献
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Sixteen human subjects were presented with an instrumental task in which pressing a button to produce a visual stimulus was followed by an auditory stimulus. Half of the subjects were assigned to a condition under which pressing the button at the subject’s operant level produced less of the auditory stimulus than the subject would normally choose to receive. For the others, pressing the button at operant level produced more of the auditory stimulus than the subject would choose. Subjects in the former condition showed increases in instrumental performance; those in the latter showed decreases. The results indicated that the rewarding or punishing effects of an event depend upon the relation of the instrumental contingency to the subject’s unconstrained behavior. 相似文献
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This paper tests the extent to which social media is shaping civic engagement initiatives to build trust among people and increase trust in their institutions, particularly the government, police and justice systems. A survey of 502 citizens showed that using social media for civic engagement has a significant positive impact on trust propensity and that this trust had led to an increase in trust towards institutions. Interestingly, while group incentives encouraged citizens to engage online for civic matters, it is civic publications through postings on social media that intensify the urge of citizens for civic action to address social issues. Post-hoc analysis via ten interviews with social activists was conducted to further examine their perceptions on trust towards institutions. The overall findings suggest that institutions, in their effort to promote a meaningful and trusting citizen engagement, need to enhance trust among the public by fostering social capital via online civic engagement and closing the public–police disengagement gap. 相似文献
120.
Bartlett JD Close GL MacLaren DP Gregson W Drust B Morton JP 《Journal of sports sciences》2011,29(6):547-553
The aim of this study was to objectively quantify ratings of perceived enjoyment using the Physical Activity Enjoyment Scale following high-intensity interval running versus moderate-intensity continuous running. Eight recreationally active men performed two running protocols consisting of high-intensity interval running (6 × 3 min at 90% VO(2max) interspersed with 6 × 3 min active recovery at 50% VO(2max) with a 7-min warm-up and cool down at 70% VO(2max)) or 50 min moderate-intensity continuous running at 70% VO(2max). Ratings of perceived enjoyment after exercise were higher (P < 0.05) following interval running compared with continuous running (88 ± 6 vs. 61 ± 12) despite higher (P < 0.05) ratings of perceived exertion (14 ± 1 vs. 13 ± 1). There was no difference (P < 0.05) in average heart rate (88 ± 3 vs. 87 ± 3% maximum heart rate), average VO(2) (71 ± 6 vs. 73 ± 4%VO(2max)), total VO(2) (162 ± 16 vs. 166 ± 27 L) or energy expenditure (811 ± 83 vs. 832 ± 136 kcal) between protocols. The greater enjoyment associated with high-intensity interval running may be relevant for improving exercise adherence, since running is a low-cost exercise intervention requiring no exercise equipment and similar relative exercise intensities have previously induced health benefits in patient populations. 相似文献