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701.
Jon Pérez Laraudogoitia 《国际科学哲学研究》2006,20(2):173-183
In this paper, an example is presented for a dynamic system analysable in the framework of the mechanics of rigid bodies. Interest in the model lies in three fundamental features. First, it leads to a paradox in classical mechanics which does not seem to be explainable with the conceptual resources currently available. Second, it is possible to find a solution to it by extending in a natural way the idea of global interaction in the context of what is called interaction by impenetrability. Third, the solution presented throws light on a problem posed and discussed in the recent literature in connection with the mass conservation principle. 相似文献
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ABSTRACTIn this paper, we reply to Eric Moore’s argument that Lance Armstrong did not cheat, at least according to one, standard account of cheating. If that is the case, we argue, so much the worse for the standard account of cheating, since Armstrong was a cheat. We argue that the standard account of cheating fails on several counts: it specifies conditions that are not necessary for cheating: that cheating involves trying to secure an unfair advantage and that cheating depends on fair application of the rules. We dispute Moore’s claim that doping in the peloton was a convention that had normative force, and reject his anti-formalist analogy between doping in the peloton and bodily contact in basketball. 相似文献
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David Johnson Starla D. Fitch Jon P. Alston William Alex McIntosh 《Suicide & life-threatening behavior》1980,10(3):157-166
ABSTRACT: Analysis of the attitudes of a 1977 cross-sectional sample of 1,530 American adults concerning euthanasia and suicide indicates that sex, age, and education are significant variables. Males, those who are younger and those who are better educated, are more likely to approve of euthanasia and suicide when a person has an incurable disease. Religious affiliation was not an important variable, although those who were frequent church-service attenders or who were high on religiosity were highly likely to reject euthanasia and suicide. 相似文献
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The temporal organization of sounds used in social contexts can provide information about signal function and evoke varying responses in listeners (receivers). For example, music is a universal and learned human behavior that is characterized by different rhythms and tempos that can evoke disparate responses in listeners. Similarly, birdsong is a social behavior in songbirds that is learned during critical periods in development and used to evoke physiological and behavioral responses in receivers. Recent investigations have begun to reveal the breadth of universal patterns in birdsong and their similarities to common patterns in speech and music, but relatively little is known about the degree to which biological predispositions and developmental experiences interact to shape the temporal patterning of birdsong. Here, we investigated how biological predispositions modulate the acquisition and production of an important temporal feature of birdsong, namely the duration of silent pauses (“gaps”) between vocal elements (“syllables”). Through analyses of semi-naturally raised and experimentally tutored zebra finches, we observed that juvenile zebra finches imitate the durations of the silent gaps in their tutor's song. Further, when juveniles were experimentally tutored with stimuli containing a wide range of gap durations, we observed biases in the prevalence and stereotypy of gap durations. Together, these studies demonstrate how biological predispositions and developmental experiences differently affect distinct temporal features of birdsong and highlight similarities in developmental plasticity across birdsong, speech, and music.
Research Highlights
- The temporal organization of learned acoustic patterns can be similar across human cultures and across species, suggesting biological predispositions in acquisition.
- We studied how biological predispositions and developmental experiences affect an important temporal feature of birdsong, namely the duration of silent intervals between vocal elements (“gaps”).
- Semi-naturally and experimentally tutored zebra finches imitated the durations of gaps in their tutor's song and displayed some biases in the learning and production of gap durations and in gap variability.
- These findings in the zebra finch provide parallels with the acquisition of temporal features of speech and music in humans.
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