大鼠左心室流出道电生理特性的观察

目的为了观察大鼠左心室流出道组织是否具有自动节律性.方法利用细胞内微电极记录技术,观察了18例大鼠左心室流出道组织的电生理特征.结果16例(88.89%)出现了自律性电活动,并且可在局部组织记录到典型的慢反应动作电位.结论大鼠左心室流出道组织具有自律性.其生理功能有待进一步研究.     

The Impact of an SES-Based Model on a College's Undergraduate Admissions Outcomes

In Grutter vs. Bollinger, the U.S. Supreme Court ruled that the use of race as one factor, among many in admissions decisions is constitutional. It is not known, however, whether future legal opinions will continue to uphold the use of affirmative action policies. Some have argued that class-based preferences can achieve many of the same goals as in affirmative action while being more likely to withstand legal challenges. To date, no empirical studies have been conducted on the potential impact of a class-based admissions policy if implemented at an undergraduate institution. This paper reports on a study at a selective public college and compares a number of outcomes under three admissions models: the original admissions decisions, a purely academic model, and an socio-economic status (SES)-based model. The findings showed that use of the SES-based model would have led to a more academically qualified class than in the original admitted class while maintaining substantially greater student diversity that was found under the academic model. An admissions policy based on preferences for socio-economically disadvantaged applicants appears to hold promise for other colleges and universities with similar institutional and applicant characteristics. The ideas and research design reported in this paper are based on the doctoral dissertation study of the second author, Undergraduate Admissions Models Incorporating Socioeconomic Factors (Johnson, 2000).     

实践理性和道德的合理性--当代西方哲学道德合理性理论评析

怎样证明道德行为的合理性一直是西方伦理学研究的主题之一。本从实践理性和实践理性的根据即价值着手，根据与行动相关的价值和中立于行动的价值之同的区别，内在主义和外在主义之同的区别，将西方关于实践理性的理论即论证道德合理性的理论分为四类：与行动相关的外在主义理论，与行动相关的内在主义理论，中立于行动的内在主义理论，以及中立于行动的外在主义理论。并对这些理论的内容及其优劣一一进行了述评。     

烟花算法在联合补货问题中的应用研究

烟花算法作为一种新型群体智能优化算法,在众多领域得到成功应用。联合采购品种的不断扩大对算法性能提出了巨大挑战。针对联合补货问题设计了基于烟花算法的求解方案,并利用基础算例证明方案有效性。随机生成的大规模算例表明,烟花算法相较于混合差分进化算法,在求解大规模联合补货问题时可获得更优的近似最优解,具有更快的收敛速度和更高的稳定性,验证了烟花算法在混合整数规划方面的应用效果。     

电教实验深入发展的行动研究法

本文从我国三大电教实验出发 ,对其所蕴含的行动研究思想进行阐述 ,并对应用行动研究法来深入发展电教实验的策略进行了分析研究。     

论教学情境的主要类型

传统教学也注重情境创设,新课程从以人为本、回归生活、注重发展的教育理念出发,大大丰富了情境的内涵,并对情境创设提出了新的要求,情境创设因此成为了新课程课堂教学改革的一个热门话题。     

形体教学课与美育教学

本文通过形体课教学与美育教学的关系，阐明了在形体教学课中对学生进行美育教学，不仅可以培养学生的审美观，而且可以增强学生在学习形体动作中的信心，从而更好地进行形体课教学。     

An educational framework for participatory action learning and action research (PALAR)

The purpose of this article is to provide an educational, theoretical, and methodological framework for using a special kind of action research, namely PALAR (participatory action learning and action research). This integrated methodology of lifelong action learning (AL) and participatory action research (PAR) has been developed over the past 25 years. It has been proven to be an effective approach to individual, professional, organizational, community (and generally practice) development. PALAR can be instrumental in pursuit of social justice and is well suited for both experienced and beginning researchers interested in researching and improving their own practice. The article illustrates with case examples how this framework has been put into practice for various programs in a variety of fields and countries. The PALAR framework is the basis for a generic program design, structure, and content, and for processes of learning, teaching, assessment, evaluation, and leadership development. It is a systemic and systematic program on how to design, justify, conduct, evaluate, write, and publish research that is particularly useful for community or work-based theses at master’s, professional doctorate, and PhD levels. An original feature of this article is its comprehensive overview and summary of the theory and practice of PALAR for the first time, with references to further readings.     

企业文化创新与企业核心竞争力

21世纪企业之间的竞争,根本上是企业文化的竞争。随着知识经济的发展,创新企业文化对企业核心竞争力的提升将发挥越来越重要的作用。中国企业进入了新的发展阶段,需要企业文化再上新台阶与之匹配。企业文化的创新与发展是一个逐步探索、逐步深入的系统工程,面对加入世界竞争带来的机遇和挑战,我国企业也应审时度势,调整自身行为,重视企业文化建设。从基于企业文化创新力的“合力”入手,阐述了文化创新对企业核心竞争力的作用,旨在通过促进企业文化创新,提升企业的核心竞争力。     

高通量药物筛选中靶分子固定化数学物理模型的建立

通过对高能量药物筛选基本过程的分析 ,探索了靶分子固定化可能对筛选质量构成的影响 .从分子相互作用看 ,实际的过程远较理想的情况复杂 .分子间存在的静电力、疏水作用力及氢键力能对固定化的机理构成较大影响 ,甚至可能诱发多层吸附的固定化模式 .基于固定化过程中可能存在的靶分子与靶分子、靶分子与微球、体相与表面相之间的相互作用 ,构筑了相应的数学物理模型 ,为实际的筛选工作提供了可参考的理论依据 .