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Age-publishing profiles are estimated for four fields of science using data from the 1977 Survey of Doctorate Recipients. The five measures of publishing activity used allow for analysis of the sensitivity of the age-publishing relationship to output measure. Results are presented separately for graduate faculty and faculty at nongraduate departments. Although age is found to be a fairly weak predictor of performance, in physics and earth science older scientists publish less than their youngest peers and in physiology and biochemistry older scientists publish less than their middle-aged colleagues. Given the time frame of the data, the results suggest that the graying of America's scientific community was accompanied with slowed rates of research in higher education. 相似文献
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Print magazines are unique among nonfiction media in their dedication of staff and resources to in-depth, word-by-word verification of stories. Over time, this practice has established magazines’ reputation for reliability, helped them retain loyal readers amid a glut of information sources, and protected them from litigation. But during the past decade, websites, mobile platforms, and social media have expanded the types of stories and other content that magazines provide for readers. Doing so has shortened the time between the creation and dissemination of content, challenging and in some cases squeezing out fact-checkers’ participation. This study examines the procedures applied to stories in magazines and their non-print platforms, seeking to discern what decisions were made in response to the speed of digital publication, what effects these decisions have had, what lessons have been learned and what changes have been made over time. The results suggest that fact-checking practices for print content remain solidly in place at most magazines, if executed with diminished resources; however, magazine media are also exploring new processes to ensure accuracy and protect their reputations in an accelerated media environment. 相似文献
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Ten rhesus monkeys were trained on five tasks, each of which consisted of eight concurrently presented object discrimination problems. Sequences of presentation were devised to allow one, two, or three new tasks to intervene between acquisition and retention tests or to provide a 30-day period of no testing. Equivalent and proficient performances were obtained in all retention tests, and no relationship was observed between retention and the initial preference characteristics of various objects. Object pReferences did produce significant influences upon acquisition, but these effects were not as pronounced in early tasks as in later ones. An additional retention test provided support for the contention that monkeys do not necessarily process information about specific object pair discriminations. Rather, they appeared to retain a list of previously rewarded objects even when object pairings were different from those provided during acquisition. Concurrent discriminations involving many distinct objects were resistant to interference and independent of preference characteristics over long retention periods. 相似文献
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Sharon Leslie 《Medical reference services quarterly》2017,36(1):90-96
This column describes the creation of an online interactive tutorial for health sciences students in a general library at a large, urban university. The project was a collaborative effort among the health sciences subject librarian, the library’s web programmer, an assessment and user services librarian, and an instructional support specialist. The column details the initial exploration, design, web programming, student usability study, and subsequent upgrades to the tutorial. Implementation of the tutorial is discussed as well as sampled student input. The effort resulted in the design of improved and more versatile open access coding available for any library to use. 相似文献
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PolicyMap is a mapping resource from The Reinvestment Fund that offers access to a range of demographic and health-related data, including chronic disease incidence, health care provider locations, food access, mass transit, and other social determinates of health. This column features a sample search and describes the types of outputs available with PolicyMap. 相似文献