FOK判断等级及其准确性的实验研究

通过实验集中控制了ＦＯＲ判断等级及其准确性的影响因素。实验以中文字串为学习材料,使用组内设计的实验方法研究了被激活信息的量和强度对ＦＯＤ等级及准确性的影响。实验结果表明：ＦＯＫ判断的等级是由被激活信息的总量决定;的,和被激活信息的正确与否无关;ＦＯＤ判断的准确性是由被激活信息的强度决定的;且二者是在内联系的。     

Consistent Fragments of Grundgesetze and the Existence of Non-Logical Objects

In this paper, I consider two curious subsystems ofFrege's Grundgesetze der Arithmetik: Richard Heck's predicative fragment H, consisting of schema V together with predicative second-order comprehension (in a language containing a syntactical abstraction operator), and a theory T in monadic second-order logic, consisting of axiom V and ¹ ₁-comprehension (in a language containing anabstraction function). I provide a consistency proof for the latter theory, thereby refuting a version of a conjecture by Heck. It is shown that both Heck and T prove the existence of infinitely many non-logical objects (T deriving,moreover, the nonexistence of the value-range concept). Some implications concerning the interpretation of Frege's proof of referentiality and the possibility of classifying any of these subsystems as logicist are discussed. Finally, I explore the relation of T toCantor's theorem which is somewhat surprising.     

Easy bayes estimation for rasch-type models

A Bayes estimation procedure is introduced that allows the nature and strength of prior beliefs to be easily specified and modal posterior estimates to be obtained as easily as maximum likelihood estimates. The procedure is based on constructing posterior distributions that are formally identical to likelihoods, but are based on sampled data as well as artificial data reflecting prior information. Improvements in performance of modal Bayes procedures relative to maximum likelihood estimation are illustrated for Rasch-type models. Improvements range from modest to dramatic, depending on the model and the number of items being considered.This research was supported by ORN Contact #00014-86-K0087. We wish to thank Sheng-Hui Chu and Dzung-Ji Lii for providing intelligent and energetic programming support for this article. We also thank one of the reviewers for pointing out several interesting and useful perspectives.     

Quantifiers and 'If'-Clauses

Stephen Barker ( The Philosophical Quarterly , 47 (1997), pp. 195–211) has presented a new argument for a pure material implication analysis of indicative conditionals. His argument relies crucially on the assumption that general indicatives such as 'Every girl, if she gets a chance, bungee-jumps' are correctly analysed as having the formal structure (for all x)(if x gets a chance, x bungee-jumps). This paper argues that an approach first proposed by David Lewis must be pursued: the 'if'-clause in these sentences restricts the quantifier. Only the Lewis-style analysis can deal with sentences involving non-universal quantifiers such as 'Most letters are answered if they are shorter than 5 pages'. I show that Barker's reasons for rejecting the restrictor analysis are not cogent and that the restrictor analysis connects widely with recent work in natural language semantics.     

Necessity and God

International Journal for Philosophy of Religion -     

如何理解作为一门科学的医学--关于医学中的非科学与伪科学

分析了医学作为一门科学的特点,提出了宽容地理解医学的必要性与意义,探讨了医学中的科学、非科学与伪科学的划分,并就由此而引发的几个问题作了讨论。     

HGP和中国HGP

人类基因组计划的研究取得了令人瞩目的成就,其成果主要表现在“四张图”上：遗传图谱、物理图谱、转录图谱和序列图谱。结构基因组学时代正向功能基因组学时代过渡,新时代的最终目的,是阐明基因组所表达的真正执行生命活动的全部蛋白质的表达规律和生物功能。中国面临着严峻的挑战,必须采取相应对策,吸收和借鉴国外在人类基因组计划研究中采用的最新技术和方法,并不断创新。     

Information seeking behavior on Facebook: The role of censorship endorsement and personality

Current Psychology - Facebook started as a platform intended for connecting people but it has developed into a rich information source. Based on the uses-and-gratification approach, we examined to...     

Wandering eyes: Eye movements during mind wandering in video lectures

Video lectures are increasingly prevalent, but they present challenges to learners. Students' minds often wander, yet we know little about how mind wandering affects attention during video lectures. This paper presents two studies that examined eye movement patterns of mind wandering during video lectures. In the studies, mind wandering reports were collected by either self-caught reports or thought probes. Results were similar across the studies: mind wandering was associated with an increased allocation of fixations to the instructor's image. For fixations on the slides, the average duration increased but the dispersion decreased. Moreover, preliminary evidence suggested that fixation duration and dispersion can diminish soon after self-caught reports of mind wandering. Overall, these findings help advance our understanding of how learners' attention is affected during mind wandering and may facilitate efforts in objectively identifying mind wandering. Future research is needed to determine if these findings can extend to other instructional formats.