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Four pigeons pecked for food reinforcement on variable interval 1-min schedules and on the variable-interval 1-min components of multiple, concurrent, and pseudoconcurrent schedules. The pseudoconcurrent schedule provided only one schedule of reinforcement; but, any reinforcer could be collected by responding on either of two keys. The rate of responding generated by the variable interval schedule was not greater than the rates of responding generated by the components of the complex schedules. But, the rate of reinforcement obtained from the variable interval schedule was greater than the rates of reinforcement obtained from the components of the multiple schedule. These results may contradict the equation proposed by Herrnstein (1970). The equation predicts that the rate of responding generated by a schedule of reinforcement will be greater when the schedule appears alone, than when it appears as one component of a complex schedule. 相似文献
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Library directors are part of the infrastructure of information management, but how well do they manage their institutional knowledge for succession planning? Our study looked at strategies to ease managerial transitions between libraries, focusing on knowledge management, communities of practice, and mentorship. Our survey found that succession planning was dictated by local practice and size of library. The results of this paper inform knowledge of succession planning and reveal existing gaps between informal transfer of knowledge and structured knowledge management (KM), as well as librarians' resourcefulness. Library directors use KM strategies, mentoring, and involvement with communities of practice to foster innovation. 相似文献
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Hooded rats were reared in very restricted environments with angular, curved, or white-field stimulation. The extent of transfer from this exposure was assessed in adulthood by testing subjects for (a) learning ability in form, brightness, and pattern discrimination tasks, and (b) exploration and activity differences in an open field. The angle-reared group performed better than the other two rearing groups in all three discrimination tasks. Moreover, the curved and white-field groups were equivalent. These learning differences did not appear to result from differences in (a) exploration or activity or (b) dependence on kinesthetic cues. The results demonstrated that one type of early visual stimulation produced transfer to discrimination tasks that varied in difficulty and in degree of relevancy to the rearing forms. This effect was related to the results and interpretations from previous form-rearing studies. Three interpretations were proposed for this transfer and for the advantage of angular vs. curved stimulation. 相似文献
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This study argues that the genre of apologia has distinct situational, substantive, and stylistic factors that are dynamically related. A dynamic theoretical framework using these three factors is proposed and used to analyze the protracted apologia of the Dow Chemical Company from 1966‐1969 in response to charges by antiwar protesters of immorality for producing napalm. Dow's rhetorical choices become much clearer when seen through the clear, serious, unprecedented, and diffuse accusatory climate that precipitated the adoption of a self actualized motive and an argumentative battle on the grounds of jurisdiction. Special constraints that corporate apologists may face as nonpersons are advanced to complete the configuration of this dynamic generic framework. 相似文献
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Fetal Antecedents of Infant Temperament 总被引：2，自引：0，他引：2
Janet A. DiPietro Denice M. Hodgson Kathleen A. Costigan Timothy R. B. Johnson 《Child development》1996,67(5):2568-2583
This study established the emergence of stable individual differences in neurobehavioral functioning prior to birth and examined their relation to subsequent infant temperament. Fetal heart rate and movement were recorded longitudinally for 31 fetuses at 6 gestational ages beginning at 20 weeks' gestation. Maternally reported temperament data were collected at 3 and 6 months. Moderate stability in all measures except reactivity was apparent at some time before birth. By 36 weeks, fetal neurobehavior accounted for between 22% and 60% of the variance in prediction of temperament scores. In general, more active fetuses were more difficult, unpredictable, unadaptable, and active infants. Higher fetal heart rate was associated with lower emotional tone, activity level, and predictability. We conclude that features of fetal neurobehavior provide the basis for individual differences in reactivity and regulation in infancy. 相似文献
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There previously has been little research specifically about use of Open Access (OA) content in Ghana for information retrieval and for publication or information sharing, although several articles indicate that the infrastructure and the attitudes are in place. The objectives of this article are (1) to document research scientists’ awareness of OA journals, (2) to determine their attitudes toward OA journal use and publication, and (3) to determine the levels of use of OA materials. This article contributes to the growing body of literature on the potential of OA for the developing world in two ways: it provides information about OA adoption in Ghana, where little research has been done thus far, and it provides information about the beliefs of research scientists in a governmental organization, an area where little research heretofore has been done. 相似文献
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The current article presents a proof of concept wherein personas were created that could support library services and collections for Latinx community members in the Midwestern United States. Personas are first described and their use in the library literature is explored. The reproducible method employed in creating the personas is then presented in detail, followed by a short discussion of the results of the persona creation. Next, a high-level discussion of the project is presented, as well as reflections on how librarians can adapt this process in efforts to design products and services to meet the needs of specific groups. 相似文献
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Denice Adkins 《Public Library Quarterly》2019,38(2):211-233
Scholarly or research-based journal articles related to public librarianship and public libraries are posited in previous literature as not being useful to the public library practitioner, and potentially less valuable to the researcher than other forms of research. Building off previous research, this article explores journal-based public library research literature to determine the trends in authorship, coverage, and venues. Publication venues are relatively static, with Public Library Quarterly and Library Quarterly publishing most public library research literature. LIS educators and public librarians dominate authorship of public library research, and the topical coverage of that research is gradually evolving in response to new technologies and a renewed focus on user services. 相似文献