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971.
The European higher education landscape is inhabited by three clans: the Euro-philiac, his wicked twin, the Euro-phobic and most interesting of all, the Euro-sceptic. This unholy trinity has long been with us. Though the recent Euro electoral fiasco has in all probability served to bolster the ranks of the second and third tribes1 相似文献
972.
The purposes of this study were to determine the relationships between: (a) measures of body size/composition and heat production/storage, and (b) heat production/storage and heart rate (HR) drift during running at 95% of the velocity that elicited lactate threshold, which was determined for 20 healthy recreational male runners. Subsequently, changes in skin and tympanic temperatures associated with a vigorous 20-min run, HR, and VO2 data were recorded. It was found that heat production was significantly correlated with body mass (r = .687), lean mass (r = .749), and body surface area (BSA, r = .699). Heat storage was significantly correlated with body mass (r = .519), fat mass (r = .464), and BSA (r = .498). The percentage of produced heat stored was significantly correlated with body mass (r = .427), fat mass (r = .455), and BSA (r = .414). Regression analysis showed that the sum of body mass, percentage of body fat, BSA, lean mass, and fat mass accounted for 30% of the variability in heat storage. It was also found that HR drift was significantly correlated with heat storage (r = .383), percentage of produced heat stored (r = .433), and core temperature change (r = .450). It was concluded that heavier runners experienced greater heat production, heat storage, and core temperature increases than lighter runners during vigorous running. 相似文献
973.
974.
This paper identifies two conceptions of security in contemporary concerns over the vulnerability of computers and networks
to hostile attack. One is derived from individual-focused conceptions of computer security developed in computer science and
engineering. The other is informed by the concerns of national security agencies of government as well as those of corporate
intellectual property owners. A comparative evaluation of these two conceptions utilizes the theoretical construct of “securitization,”developed
by the Copenhagen School of International Relations.
This article has been on the drawing boards for longer than I dare to admit. Along the way, many have helped its development
by generously sharing their wisdom: James Der Derian, Niva Elkin-Koren, Ed Felten, Batya Friedman, Lene Hansen, audiences
at CEPE, TPRC, the Yale Cybercrime and Digital Law Enforcement Conference, and Watson Institute’s Symposium in Dis/Simulations
of War and Peace,” and University of Newcastle, Computer Science Department. Thanks, also, to Sam Howard-Spink for excellent
editorial assistance. 相似文献
975.
This explorative case study aims at shedding light on the utilization of a specific Intranet-based knowledge-sharing platform, the ShareNet. This system is part of a €1bn investment campaign to transform Siemens into an e-driven company, and it is an important example of system enabling knowledge sharing between local subsidiaries within large multinationals. By investigating how such company-wide system is structured and employed a theoretical model and three propositions about IT contribution to intra-firm knowledge sharing are formulated. Findings lead to the conclusion that, on one hand, IT systems represent an efficient mechanism for knowledge duplication through imitation between units with similar capabilities and, on the other, as a trigger for direct interaction resulting in knowledge development through joint problem solving between units having complementary capabilities. 相似文献
976.
Ring C Carroll D Hoving J Ormerod J Harrison LK Drayson M 《Journal of sports sciences》2005,23(5):501-508
It has been suggested that the psychological stress associated with competitive sports events may help to explain the increased susceptibility to respiratory infections due to reductions in secretory immunity. In the current study, we investigated the influence of competitive exercise and psychological stress on secretory immunoglobulin A (s-IgA). Salivary s-IgA and heart rate were measured in 62 healthy young recreationally active men at rest and, in a between-subjects design, following one of four 8-min tasks: mental arithmetic, cycling at workloads of 60 to 180 W (mean = 146 W), mental arithmetic while cycling, or competitive cycling. Mental arithmetic was associated with significant increases in s-IgA concentration (mean = 49 microg.min(-1)) and s-IgA secretion rate (mean = 25 microg.ml(-1)) compared with rest, while mental arithmetic combined with exercise was associated with a significant increase in s-IgA concentration only (mean = 124 microg.min(-1)). In contrast, competitive exercise and exercise alone did not influence s-IgA concentration or secretion rate. Heart rate increased modestly to mental arithmetic (mean = 7 beats.min(-1)) and substantially, and similarly, to the three exercise tasks (mean = 56(62 beats.min(-1)). The hypothesis that the psychological stress of competitive exercise contributes to increased susceptibility to infection via reductions in s-IgA requires further investigation. 相似文献
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980.
Marco?A.?HaanEmail author S.?Gerhard?Dijkstra Peter?T.?Dijkstra 《Journal of Cultural Economics》2005,29(1):59-78
For centuries, there have been discussions as to whether only experts can judge the quality of cultural output, or whether the taste of the public also has merit. This paper tries to answer that question empirically, using national finals of the Eurovision Song Contest. We show that experts are better judges of quality in the sense that the outcome of finals judged by experts is less sensitive to factors unrelated to quality than the outcome of finals judged by public opinion. Yet, experts are not perfect; their judgment does still depend on such factors. This is also the case in the European finals of the contest. 相似文献