ABCD2评分法预测短暂性脑缺血发作后脑卒中发病风险的研究

为探讨APCD2评分法在短暂性脑缺血发作（T1A）后脑卒中发生风险的预测价值,选择发病48小时内的颈内动脉系统TIA患者112例进行ABCD2评定并分为0分、低危、中危、高危组并随访6个月。结果显示,高危组血管狭窄和软斑块程度较0分组、低危组、中危组显著严重;7天时高危组较中危、低危组卒中发生率显著增高;30天、60天...     

Cut Elimination inside a Deep Inference System for Classical Predicate Logic

Deep inference is a natural generalisation of the one-sided sequent calculus where rules are allowed to apply deeply inside formulas, much like rewrite rules in term rewriting. This freedom in applying inference rules allows to express logical systems that are difficult or impossible to express in the cut-free sequent calculus and it also allows for a more fine-grained analysis of derivations than the sequent calculus. However, the same freedom also makes it harder to carry out this analysis, in particular it is harder to design cut elimination procedures. In this paper we see a cut elimination procedure for a deep inference system for classical predicate logic. As a consequence we derive Herbrand's Theorem, which we express as a factorisation of derivations.     

子宫及卵巢切除术对女性内分泌和性功能的影响

子宫与卵巢是女性性器官,具有多种内分泌功能,产生许多生物活性物质调节机体内分泌系统,二者保持平衡状态可使机体内分泌稳定,性功能正常。因良性疾病切除子宫后,卵巢血供受损,功能下降,可发生卵巢功能早衰,更年期症状提前出现;因病需要同时切除卵巢者,可使更年期症状加重,影响女性内分泌及性功能并可增加心血管系统疾病和骨质疏松症的发病率。因此建议在外科手术时应严格掌握子宫及卵巢切除的适应证,尽量减少不必要的损伤给女性带来的不良后果。     

Naïve Realism,Hallucination, and Causation: A New Response to the Screening Off Problem

This paper sets out a novel response to the ‘screening off’ problem for naïve realism. The aim is to resist the claim (which many naïve realists accept) that the kind of experience involved in hallucinating also occurs during perception, by arguing that there are causal constraints that must be met if an hallucinatory experience is to occur, ones that are never met in perceptual cases. Notably, given this response, it turns out that, contra current orthodoxy, naïve realists need not adopt any particular view about the psychological nature of hallucinatory experience to handle the screening off problem. Consequently, room opens up for naïve realists to endorse whatever theory of hallucinatory experience seems to best capture the distinctive nature of such episodes.     

Off‐Task Social Breaks and Group Creativity

This study investigates the effect of off‐task breaks, where individuals engage in a collective off‐task activity, on group creativity. Using an experimental method comprising 36 groups of 5 individuals, the relationships between different types of off‐task group break and performance in creative tasks post‐break are explored. When compared to the no‐break case, it is seen that off‐task breaks, in which all individuals participate in the group activity, lead to more original ideas being generated post‐break. On the other hand, individual incubation breaks and self‐organizing group breaks, lead to lower levels of post‐break idea originality when compared with the no‐break case. This research thus highlights the positive benefits of off‐task breaks involving full member participation, on the creative process in groups.     

Robust inference with binary data

In this paper robustness properties of the maximum likelihood estimator (MLE) and several robust estimators for the logistic regression model when the responses are binary are analysed. It is found that the MLE and the classical Rao's score test can be misleading in the presence of model misspecification which in the context of logistic regression means either misclassification's errors in the responses, or extreme data points in the design space. A general framework for robust estimation and testing is presented and a robust estimator as well as a robust testing procedure are presented. It is shown that they are less influenced by model misspecifications than their classical counterparts. They are finally applied to the analysis of binary data from a study on breastfeeding.The author is partially supported by the Swiss National Science Foundation. She would like to thank Rand Wilcox, Eva Cantoni and Elvezio Ronchetti for their helpful comments on earlier versions of the paper, as well as Stephane Heritier for providing the routine to compute the OBRE.     

小学优生与差生完成系列回忆任务错误类型发展的实验研究

主要探讨了小学优生与差生在完成系列回忆记忆任务时出现错误的发展情况。实验以小学一、三、五年级的学生作为被试,每年级优生与差生各10名。以普通(不形似,不近音)、形似和近音三种类型汉字为实验材料,要求被试按材料呈现的顺序进行回忆。结果发现：在完成系列回忆任务时,小学生表现出四种错误类型,错误率从高到低依次是：移动错误、遗漏错误、侵入错误、重复错误。每一类型的错误率都是优生显著少于差生。研究还发现四种错误受材料特点的影响,即各年级小学生错误率从高到低近音字、形似字、普通字。     

On Reduction Systems Equivalent to The Lambek Calculus with the Empty String

The paper continues a series of results on cut-rule axiomatizability of the Lambek calculus. It provides a complete solution of a problem which was solved partially in one of the author's earlier papers. It is proved that the product-free Lambek Calculus with the empty string (L ₀) is not finitely axiomatizable if the only rule of inference admitted is Lambek's cut rule. The proof makes use of the (infinitely) cut-rule axiomatized calculus C designed by the author exactly for this purpose.     

Peer-mediated reinforcement plus prompting as treatment for off-task behavior in children with attention deficit hyperactivity disorder

Functional analyses revealed that peer attention was one variable maintaining the off-task behavior exhibited by 3 students with a diagnosis of attention deficit hyperactivity disorder (ADHD). Peer-mediated reinforcement plus prompting was then used to reduce off-task behavior in a simulated classroom environment. Implications for future applications of this procedure with children diagnosed with ADHD are discussed.     

The Long‐Term Impact of Natural Mentoring Relationships: A Counterfactual Analysis

Previous research suggests that youth's natural mentoring relationships are associated with better academic, vocational, and psychosocial functioning. However, little is known about the extent to which the impact of mentoring endures beyond adolescence and early adulthood. Furthermore, most natural mentoring research is confounded by selection bias. In this study, we examined the long‐term impact of mentoring using the nationally representative, longitudinal Add Health dataset. We conducted counterfactual analysis, a more stringent test of causality than regression‐based approaches. Compared to their unmentored counterparts, adults (ages 33–42) who had a natural mentor during adolescence or emerging adulthood reported higher educational attainment, more time spent volunteering, and more close friends, after controlling for a range of confounding factors. However, outcomes differed when mentors were classified as “strong ties” (e.g., grandparents, friends) or “weak ties” (e.g., teachers, coaches, employers). Having a strong‐tie mentor was associated with having more close friends and a lower income. In contrast, having a weak‐tie mentor was associated with higher educational attainment, higher income, and more time spent volunteering. These findings suggest that natural mentoring relationships can exert lasting influence on young people's developmental trajectories, providing strong rationale for efforts to expand their availability and scope.