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21.
Quine has argued that modal logic began with the sin of confusing use and mention. Anderson and Belnap, on the other hand, have offered us a way out through a strategy of nominalization. This paper reviews the history of Lewis’s early work in modal logic, and then proves some results about the system in which “A is necessary” is intepreted as “A is a classical tautology.”  相似文献   
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In an earlier paper entitled Synonymous Logics, the authors attempted to show that there are two modal logics so that each is exactly translatable into the other, but they are not translationally equivalent. Unfortunately, there is an error in the proof of this result. The present paper provides a new example of two such logics, and a proof of the result claimed in the earlier paper.  相似文献   
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An Ockham lattice is defined to be a distributive lattice with 0 and 1 which is equipped with a dual homomorphic operation. In this paper we prove: (1) The lattice of all equational classes of Ockham lattices is isomorphic to a lattice of easily described first-order theories and is uncountable, (2) every such equational class is generated by its finite members. In the proof of (2) a characterization of orderings of with respect to which the successor function is decreasing is given.  相似文献   
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Objective: To develop and evaluate a decision aid designed to prepare patients of advanced maternal age for counseling about prenatal diagnostic testing. Setting: A regional genetics center. Design: A before/after study. Interventions: Participants used an audioguided workbook to learn about options and outcomes and to clarify personal risks, values, questions, and predispositions. Subjects: 21 women of advanced maternal age and 17 spouses. Main outcome measures: Knowledge of prenatal testing alternatives, decisional conflict, level of anxiety, and acceptability of the decision aid. Results: After using the decision aid, participants had significantly reduced decisional conflict (uncertainty) and a significant increase in knowledge. There was no effect on state or trait anxiety. More than three-quarters of participants were satisfied with the length, clarity, balance, and acceptability of the decision aid. Conclusions: The decision aid shows promise as a useful aid for preparing couples for counseling.  相似文献   
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In recent years there has been growing scholarly interest in the relationship between bioethics and human rights. The majority of this work has proposed that the normative and institutional frameworks of human rights can usefully be employed to address those bioethical controversies that have a global reach: in particular, to the genetic modification of human beings, and to the issue of access to healthcare. In response, a number of critics have urged for a degree of caution about applying human rights to such controversies. In particular, they have claimed that human rights have unresolved distributive and foundational problems. Interestingly, however, some of these critics have gone on to suggest that it might be possible to draw on certain bioethical insights to remedy these problems with human rights. This paper evaluates these recent attempts to apply insights from bioethics to the theory and practice of human rights. It argues that while these insights do not constitute an entirely new and original contribution to human rights thinking, they do force human rights scholars and campaigners to reflect on some key issues. First of all, they force us to question the prevalent idea that human rights are always ‘inviolable trumps’. Secondly, they demand that we pay close attention to the ‘fairness’ of the institutions we charge with determining our concrete rights. And finally, and perhaps most radically, these insights challenge the notion that human rights are held exclusively by members of the human species.  相似文献   
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Alasdair M. Richmond 《Ratio》2008,21(2):201-217
This paper attempts three tasks in relation to Carter and Leslie's Doomsday Argument. First, it criticises Timothy Chambers' ‘Ussherian Corollary’, a striking but unsuccessful objection to standard Doomsday arguments. Second, it reformulates the Ussherian Corollary as an objection to Bradley Monton's variant Doomsday and Nick Bostrom's Simulation Argument. Finally, it tries to diagnose the epistemic/metaphysical problems facing Doomsday‐related arguments. 1  相似文献   
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This study examined differential symptom functioning (DSF) in ADHD symptoms across Malay and Chinese children in Malaysia. Malay (N=571) and Chinese (N=254) parents completed the Disruptive Behavior Rating Scale, which lists the DSM-IV ADHD symptoms. DSF was examined using the multiple indicators multiple causes (MIMIC) structural equation modeling procedure. Although DSF was found for a single inattention (IA) symptom and three hyperactivity-impulsivity (HI) symptoms, all these differences had low effect sizes. Controlling for these DSF, Chinese children had higher IA and HI latent factor scores. However the effect sizes were small. Together, these findings suggest adequate support for invariance of the ADHD symptoms across these ethno-cultural groups. The implications of the findings for cross-cultural invariance of the ADHD symptoms are discussed.  相似文献   
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