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Collins B Linton A Merril J Pomerantz K Winthrop S 《Medical reference services quarterly》1992,11(4):1-9
Computers are integral to medical practice, education, and research. While medical students learn computer skills during their training, many practicing physicians do not have the same computer experience. To familiarize this group with the exciting developments in medical informatics, the Himmelfarb Health Sciences Library and Department of Computer Medicine at the George Washington University Medical Center organized a workshop "Introducing Your Office Computer!" for attending physicians. The workshop featured a short lecture/video presentation on computer applications in medicine followed by a "computer fair" of five computer applications. Eleven physicians attended the workshop. Feedback was very positive; many called later to request more detailed instructions on using the programs demonstrated. It was a valuable experience for the staff, and new bridges were built between departments and clients. 相似文献
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Through the lens of post-structural agency, this article focuses on how self-identified smart girls strategically negotiate their academic identities within the gendered terrain of the school. Based on interviews with 51 smart high school girls in Canada, our analysis complicates current narrative of girls’ easy achievement in school. Participants discussed balancing the hazards of being overly academic with the rewards of academic success. In response to this tension, girls carefully and consciously performed ‘smart girlhood’, drawing on resources that are more available to some girls than others, and indicating that girls’ academic success is neither easily embraced nor unambivalently accepted. 相似文献
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Dawn H. Currie Deirdre M. Kelly Shauna Pomerantz 《British Journal of Sociology of Education》2007,28(1):23-37
While researchers and concerned adults alike draw attention to relational aggression among girls, how this aggression is associated with girls’ agency remains a matter of debate. In this paper we explore relational aggression among girls designated by their peers as ‘popular’ in order to understand how social power constructs girls’ agency as aggression. We locate this power, hence girls’ agency, in contradictory messages about girlhood that, although ever‐present ‘in girls heads,’ are typically absent in adult panic about girls’ aggression. Within peer culture, power comes from the ability to invoke the unspoken ‘rules’ that police the boundaries of acceptable femininity. We thus challenge the notion advanced by Pipher and others that girls’ empowerment entails (re)gaining an ‘authentic voice.’ In contrast, we suggest that such projects must be informed by an interrogation of how girls are positioned as speaking subjects. 相似文献
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Martin A. Pomerantz 《Journal of The Franklin Institute》1946,241(6):415-433
The secondary electron emission from alkaline-earth oxide-coated cathodes has been investigated under both continuous and pulsed bombardment. Various factors affecting the yield, such as dependence upon primary voltage, collecting voltage, temperature, time, and angle of incidence, are noted, and the present state of the theory is discussed.Experiments have been performed with three types of apparatus. Yield vs. Energy data reveal values of δ of 4–7 at room temperature, with a more or less flat maximum at approximately 1,000 volts primary energy.The yield increases with temperature in an exponential manner, and plots of log Δδ (i.e. δK° ? δ300°K) vs. 1/T give straight lines. Values of Q1 between 0.9 – 1.5 eV. are generally indicated, and from extrapolation of these curves, yields exceeding 100 at 850° C. are deduced. The secondary emission depends upon the degree of activation, and increases with enhancement of the thermionic emission characteristics. Short-time effects such as growth or decay of secondary current after the onset of primary bombardment or persistence after the cessation of bombardment have not been observed, and values of yield obtained by pulsed methods are in accord with those obtained under D.C. conditions. Tail phenomena reported by J. B. Johnson and interpreted as “enhanced thermionic emission” from oxidecoated cathodes become manifest only under experimental conditions characterized by certain space-charge effects, and have been effectively simulated by bombarding a tantalum target adjacent to an electron-emitting tungsten filament. Various measurements of the energy distribution of secondary electrons as a function of primary voltage and temperature have been obtained. It was observed that the average energy of the secondary electrons decreases with temperature at a rate which more than compensates for the increase in the number of secondaries emitted per incident primary. The mechanism of the observed dependence of yield upon temperature is not well understood. Various alternative explanations are discussed and, in the light of the present state of our knowledge, regarded as untenable. 相似文献
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