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71.
AbstractRachel Fleming and Kristin Calvert of Western Carolina University discuss their study of interlibrary loan borrowing requests in the three years surrounding a journal cancellation project. Noting that the impact of such a cancellation on interlibrary loan has not been studied since the 1990s, they examine numerous facets of requests for cancelled and non-cancelled journals, including request per journal, year of article requested, and request history for newly cancelled journals. Though journal cancellations resulted in a 2 percent increase in interlibrary loan requests, this number proved so small that Calvert and Fleming judged that their cancellations caused no undue effects. 相似文献
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Tobias Wagner Christoph Bröcker Nicolas Saba Dirk Biermann Anton Matzenmiller Kurt Steinhoff 《AStA Advances in Statistical Analysis》2010,94(4):389-404
In this paper, measurements from experiments and results of a finite element analysis (FEA) are combined in order to compute accurate empirical models for the temperature distribution before a thermomechanically coupled forming process. To accomplish this, Design and Analysis of Computer Experiments (DACE) is used to separately compute models for the measurements and the functional output of the FEA. Based on a hierarchical approach, a combined model of the process is computed. In this combined modelling approach, the model for the FEA is corrected by taking into account the systematic deviations from the experimental measurements. The large number of observations based on the functional output hinders the direct computation of the DACE models due to the internal inversion of the correlation matrix. Thus, different techniques for identifying a relevant subset of the observations are proposed. The application of the resulting procedure is presented, and a statistical validation of the empirical models is performed. 相似文献
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This study compares participation in deviant subsistence strategies, street victimization, and lifetime prevalence of five mental disorders (conduct disorder, major depressive disorder, post-traumatic stress disorder, alcohol abuse, and drug abuse) among heterosexual males and females (n = 366) and gay, lesbian, and bisexual (n = 63) homeless and runaway adolescents from the first wave of a longitudinal study of homeless youth in four Midwestern states. The results indicate that gay, lesbian, and bisexual adolescents were more likely to have been physically and sexually abused by caretakers, we more likely to engage in risky survival strategies when on their own (including survival sex), were more likely to be physically and sexually victimized when on the streets, and were more likely to meet criteria for mental disorder than were their heterosexual counterparts. 相似文献
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