脑梗死不同病因亚型同血浆同型半胱氨酸浓度的关系研究

为探讨脑梗死患者血浆同型半胱氨酸(HCY)水平同病因分型及疾病严重程度的关系,选择首发脑梗死急性期患者73例,对照组30例,进行TOAST病因分型、NIHSS神经功能缺损评分、血浆HCY检测.结果显示,病例组血浆HCY升高率、水平比对照组显著增高;大动脉粥样硬化亚型病例组血浆HCY水平比对照组明显增高;病例组血浆HCY水平同NIHSS评分呈正相关,提示高HCY血症是脑梗死发病及大动脉粥样硬化亚型脑梗死发病的高危因素,血浆HCY水平同神经功能缺损程度正相关.     

冠心病理想治疗方式的选择

心病的治疗包括针对高危因素病因和临床并发症的综合治疗.其中,药物治疗主要包括:凝/抗血小板、控制血压和调脂等.血管重建术主要包括:入、搭桥、"杂交"手术和分子生物学治疗.药物治疗是冠心痛各种治疗方法的基础,而血管重建术是现代治疗冠心痛的重要手段.如何合理地选择治疗方案是临床医师面临的重要课题.     

护理扩展培训在艾滋病干预模式中的探讨

新疆艾滋病形势严峻,艾滋病重点疫区的护理人员普遍存在着对艾滋病知识的缺乏,对艾滋病患者持有歧视、恐惧的心理及缺乏基本的防护知识等现状,艾滋病护理扩展培训项目的实施,通过对护理人员进行的艾滋病知识培训,对艾滋病干预模式进行了有益的探索和实践.     

社会公理研究现状与展望

社会公理是人们对世界是如何运作的总体感知,它对人们的日常行为起着重要的指导作用.文章首先介绍了社会公理概念的发展,回顾总结了社会公理对行为的预测及其和文化相关的研究,并对未来的研究方向提出了建议与展望.     

子图问题学习对几何解题迁移的影响

将一个图形（称为母图）的若干条线段删除后得到的图形叫做母图的子图。运用实验方法探讨了子图结构学习和子图变式学习对解决问题的迁移效果。结果表明：子图结构学习仅对解决“图形结构相同、逻辑结构相同”问题有明显迁移作用;子图变式学习对解决“图形结构相同、逻辑结构相同”没有明显迁移作用,对“图形结构相似、逻辑结构相同”、“图形结构相同、逻辑结构相似”以及“图形结构相似、逻辑结构相似”四类问题均有明显迁移作用。     

高中生不同类型的沉思对抑郁症状发展的中介作用

探讨不同类型的沉思对抑郁症状变化的中介作用及性别差异。用流调中心用抑郁量表和沉思反应量表等自评量表对512名高中生追踪调查3个月,用层次回归法分析数据。结果表明：（1）男、女生的抑郁情绪、强迫性冥思和反思不存在差异。（2）强迫性冥思对抑郁症状的变化起部分中介作用;反思与第二次抑郁症状不相关,不存在中介作用。（3）女生的强迫性冥思对抑郁症状的变化起部分中介作用;男生的强迫性冥思对抑郁症状变化不存在中介作用。结论不同类型的沉思对抑郁症状变化的中介作用是不同的,并且存在性别差异。     

Age difference in numeral recognition and calculation: an event-related potential study.

In this study, we investigated the age difference in numeral recognition and calculation in one group of school-aged children (n = 38) and one of undergraduate students (n = 26) using the event-related potential (ERP) methods. Consistent with previous reports, the age difference was significant in behavioral results. Both numeral recognition and calculation elicited a negativity peaking at about 170-280 ms (N2) and a positivity peaking at 200-470 ms (pSW) in raw ERPs, and a difference potential (dN3) between 360 and 450 ms. The difference between the two age groups indicated that more attention resources were devoted to arithmetical tasks in school-aged children, and that school-aged children and undergraduate students appear to use different strategies to solve arithmetical problems. The analysis of frontal negativity suggested that numeral recognition and mental calculation impose greater load on working memory and executive function in schoolchildren than in undergraduate students. The topography data determined that the parietal regions were responsible for arithmetical function in humans, and there was an age-related difference in the area of cerebral activation.     

"东西方差异"抑或"元概念"争执——关系概念再思考

“关系”作为社会网络研究乃至整个新经济社会学研究的核心概念,自从它成为一个学术研究对象以来就一直是学者们争论的一个焦点问题。如何对这一概念做出定义、分类、操作乃至如何运用它来建构理论,不同的学者有不同的解释。本文以“东西方差异”作为反思“关系”概念的切入口,指出现有的“关系”概念所包含的东西方差异实质上是一种假象,并就国内学者对“关系”概念的反思进行了梳理、提出自己的理解。     

LAW培养模式在医学教育中的建立

LAW模式的建立是要改变被动的、填鸭式学习方式为积极、主动及高效的学习,培养有能力、高素质、有知识的人才。LAW模式给出学习的目标、学习方式及自我检查的标准,基本特点:多层次、多角度学习潜力的调动;启发式、以问题为导向、以学生为中心的互动学习方法;逻辑性、批判性及创造性思维的培养与应用;重点与相关学科内容的整合方式;观察、思考、信息与实践的有机结合。     

Chinese kindergartners’ automatic processing of numerical magnitude in Stroop-like tasks

Using Stroop-like tasks, this study examined whether Chinese kindergartners showed automatic processing of numerical magnitude. A total of 36 children (mean age 5 5 years 10 months) were asked to perform physical size comparison (i.e., “Which of two numbers is bigger in physical size?”) and numerical magnitude tasks (i.e., “Which of two numbers is bigger in numerical magnitude?”) on 216 number pairs. These number pairs varied in levels of congruence between numerical magnitude and physical size (for Stroop effect) and numerical distance (for distance effect). On the basis of analyses of response time and error rates, we found that Chinese kindergartners showed automatic processing of numerical magnitude. These results are significantly different from previous studies’ findings about the onset age (ranging from around the end of first grade to third grade) for automatic processing of numerical magnitude.