灯头壳多工位拉深级进模设计

针对灯头壳零件的结构特点和生产要求,介绍了灯头壳多工位拉深级进模的结构设计要点和工作原理.提出了控制模具动作顺序的施力措施及设计方法,叙述了采用浮动式凹模在多工位拉深模中的作用.应用结果表明,该模具结构保证了灯头壳冲压变形趋向的稳定性和可靠性,此设计方法对薄壁件多工位拉深级进模的设计具有通适性.     

从教育测验到教育评论相关概念及其关系的辨析

人类对教育进行事实判断和价值判断,走过了从教育测验到教育评论的历程,形成了教育测验、教育统计、教育测量、教育评估、教育评价、教育评论理论,并且这一学科群落已经形成。但由于这些理论和学科群落并不成熟,许多人对该学科群落的相关概念及其关系认识不清。因此,很有必要从多角度对该学科群落的相关概念及其关系进行辨析,并对该学科群落建设进行有益的探索。     

零售商态度承诺和供应商权力使用间的互动关系研究

本文研究了零售商不同的态度承诺与供应商权力使用间的互动关系。通过对中国346对家用电器零售商--供应商关系的问卷调查,利用因子分析及结构方程模型验证了概念模型及假设。本文研究结果表明:供应商强制性权力的使用会增加零售商的算计性承诺,降低其忠诚性承诺,而供应商非强制性权力的使用会增加零售商的忠诚性承诺。同时零售商的算计性承诺会促使供应商更多地使用强制性和非强制性权力,而零售商的忠诚性承诺则会减少供应商强制性权力的使用,增加供应商非强制性权力的使用。     

图书馆学的科学化与合理性

提出图书馆学的科学化和合理性问题。认为以图书馆这一人文社会现象作为自己研究对象的图书馆学,不可能实现绝对科学化和客观性,图书馆学科学化的实质是图书馆学的合理性,即合规律性与合目的性的统一,构建合理性图书馆学理论必须坚持科学实证与哲学人文建构相结合。     

Association between mandibular posterior alveolar morphology and growth pattern in a Chinese population with normal occlusion

Objective:To investigate the relationship between growth patterns and mandibular posterior tooth-alveolar bone complex morphology in a Chinese population with normal occlusion.Methods:Forty-five patients with normal occlusion(23 males,22 females) were included in this study.Among these patients,20 displayed the vertical growth pattern,and 20 had the horizontal growth pattern,while the remaining patients displayed the average growth pattern.All of the patients underwent dental cone beam computed tomography(CBCT),which included the region of the mandibular posterior teeth and the alveolar.A linear regression analysis and a correlation analysis between the facial height index(FHI) and the alveolar bone morphology were performed.Results:The inclination of the molars,the thickness of the cortical bone,and the height of the mandibular bone differed significantly between patients with the horizontal growth pattern and those with the vertical growth pattern(P<0.05).Significant positive correlations were found between:the FHI and the inclination of the molars;the FHI and the thickness of the cortical bone;and the FHI and the height of the mandibular bone.Conclusions:The mandibular posterior tooth-alveolar bone complex morphology may be affected by growth patterns.     

从跨文化角度看《红楼梦》中的称谓翻译

中文中的称谓语往往体现着交际双方的身份地位、学识修养以及亲疏程度,但英文中的称谓语却很难体现出这些。因此如何将汉语的称谓语准确无误地翻译成对应的英语称谓语显得非常重要。在《红楼梦》的两大译本中霍克斯和杨宪益都尽其所能对称谓语进行了翻译,通过对比他们对称谓语的翻译,可以得出在翻译称谓语时,首先应该注重原文称谓语的所指,其次应该注重原文称谓语的文化内涵。     

浅谈如何跨越试题中的“陷阱＂

我们把试题针对学生学习和研究物理问题在认识上的片面性而有意设置时干扰信息和障碍，称为“陷阱”．这类试题充分体现了素质教育的基本要求和考核方向，笔者通过对试题的分析，认为这类试题可分为五类，解题时只要明确目的，理清思路，就能发掘和跨越“陷阱”．     

背越式跳高过杆动作典型错误的分析及纠正

背越式跳高是一项技术动作较为复杂的跳跃项目 ,在公共体育课教学中 ,由于跳高技术动作的复杂性和对身体素质要求较高 ,学生经常出现错误动作 .本文就背越式跳高过杆动作典型错误的产生原因进行分析 ,并提出了纠正的方法     

Introducing teaching cases with face-to-face and computer-mediated discussion: Two multi-classroom quasi-experiments

Two studies were conducted in multisection introductory child and adolescent development classes to determine effects of introducing abbreviated teaching case studies that were then discussed either in face-to-face or online formats. Students receiving teaching case studies in either format in both classes showed improved ability to critically analyze probe and final cases compared to control participants. Both case study groups in the child development class also showed increased application of psychological concepts in analyzing new cases. No differences in course knowledge were expected as a function of condition and none were found. Hypothesized case-related increases in efficacy for teaching also were not observed. Results were interpreted as supporting a case analysis approach in educational psychology classes and use of online methods for presentation and discussion of abbreviated cases.