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Bruce H. Pugesek Chris Nations Kenneth L. Diem Roger Pradel 《Journal of applied statistics》1995,22(5):625-640
California gulls ( Larus californicus ) of known age and sex were censused on their breeding colony in 1979, 1980 and 1984 through 1993. Ages of 235 males and 196 females ranged from 4 to 27 years. Age classes used in the analysis were limited to 17, 4 through 19, and 20 or more as a final age category because data on gulls over 20 were sparse. Survival declined with age in a way that was parsimoniously modelled with a quadratic function. Other factors, sex and time, did not explain any variation in survival. Resighting depended on age, sex and time. Younger adults skipped breeding more frequently than did older adults, and females skipped breeding more frequently than did males. There was also good evidence for time dependence in resighting probability, but its inclusion in the model occurred at the expense of interpretability and precision. In a data set such as this, resighting probability may assume more importance than a mere 'nuisance parameter'. In this study, resighting history measured attendance at the breeding ground. In turn, attendance rates may be a manifestation of reproductive strategy, which can also have consequences for survival. In this situation, there may be heterogeneity in both survival and resighting probability that is unexplained by the model. While such complexity may well be a nuisance to deal with, it can also point to important biological questions. 相似文献
145.
Roger A. Lohmann 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》1995,6(2):140-158
Very little attention has been devoted by third sector researchers to the question of comparable or related activities in
Asia. This article explores a complex of Asian Buddhist religious beliefs and practices using ‘the commons’ as a comparative
concept. Examination of published, English-language sources provides clear evidence of the existence of a variety of third
sector-like activity in Asia far in the past. Village codes codifying charitable practices and village associations have been
recorded in China, Japan and Korea. In addition, a good deal of charitable and philanthropic activity has been associated
with Asian Buddhism: beliefs supporting gift exchange (dharma anddana), veneration of certain leader-philanthropists, a distinctive model of community organisation (sangha), a Japanese model of fund-raising (kanjin) campaigns, and a long tradition of international Buddhist convocations are among the range of indigenous common goods which
can be found in the Asian context prior to any discernible western influences. 相似文献
146.
Roger Clark 《The Sociological quarterly》1992,33(1):83-98
This study examines two versions of how economic dependency has affected relative gender positioning in non-core nations' labor forces since the 1960s. A "new dependency" version asserts that multinational corporate investment in manufacturing has transformed the labor forces of such nations, permitting women unusual access to relatively high-paying, if ephemeral, light manufacturing positions. A "traditional trade dependency" version suggests that, despite the aforementioned transformation in some non-core nations, the dominant form of dependency in most remains traditional: they export primary goods in return for manufactured imports. This version claims that such structures not only deter women's entry into the formal labor force as a whole, but constrain those who do enter to relatively marginal agricultural positions. Panel analyses of data on non-core nations evaluates these versions and both receive considerable support. 相似文献
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Roger Holmes 《Sociological Forum》1986,1(4):610-631
In this paper, I address a dilemma in the theory of knowledge and argue that this dilemma can be overcome by invoking the work of two well known social scientists—Marx (here considered as a sociologist) and Piaget (a psychologist). The dilemma considered is that of the relationship between what are here called independent (i.e., non-circular) and relational definitions; each form of definition has been the basis of a particular approach to the knowable (the independent definition being the basis of empiricism and the relational definition being the basis of Hegelianism) and each of these approaches can be shown to be unsatisfactory: empiricism, brilliantly successful in practice, runs itself, at the theoretical level, into the circular and the relational; while Hegelianism, although impregnable in logic, gains such impregnability at the cost of any delimitation and, hence of precision and refutability. It is argued that Marx (a follower of Hegel) as adapted by Piaget, can indeed overcome these difficulties and so present us with a theory of knowledge that makes possible an approach that is both successful in practice and reputable in logic. 相似文献
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Daniel M. Byrd III Donald O. Allen Robert L. Beamer Henry R. Besch Jr. David B. Bylund John Doull William W. Fleming Arthur Fries F. Peter Guengerich Roger Hornbrook Louis Lasagna Bert K. B. Lum Elias K. Michaelis Edward T. Morgan Alan Poland Karl K. Rozman J. Bryan Smith Hollie I. Swanson William Waddell James D. Wilson 《Risk analysis》1998,18(1):1-2