Exploring the Boundary Conditions of the Redundancy Principle

This experiment investigated whether study of a scientific text and a visual display that contained redundant text segments would affect memory and transfer. The authors randomly assigned 42 students from a university in the southwestern United States in equal numbers to 1 of 2 conditions: (a) a redundant condition, in which participants studied a scientific text that described plate tectonics and a corresponding visual display that contained redundant segments from the text; or (b) a nonredundant condition, in which participants studied the scientific text and a corresponding visual display that lacked the redundant text segments. Embedding redundant text segments within the visual display enhanced performance on 3 measures of memory but not on a measure of transfer. The authors discuss the theoretical and practical implications using the cognitive theory of multimedia learning.     

Sublime Heterogeneities in Curriculum Frameworks

To what extent does the construction of any curriculum framework have to contain axiological assumptions? Educators have been made aware of tacit epistemological assumptions underlying existing curricular frameworks by the continual demands for their revision. , ) suggested that curriculum policy should be centred around imagination; economic rationalists have suggested that it be made more functional and accountable than traditional university disciplines allow for. Is it possible, as ) suggests, to combine competing traditional ideologies of education in a complex postmodern pastiche which can nonetheless provide standards of assessment and evaluation without presuming a grand narrative? ) suggests not. This paper examines the challenge of maintaining principled standards and recognising postmodern relativities, making particular reference to the notion of the sublime and the arts curriculum.     

组织系统的平衡机制

对组织系统中的一种通过合作对内维持协调、通过创新对外适应环境的平衡机制从要素配置角度进行了分析.包括三个问题:(1)机制内容:动力系统、要素配置、组织性能;(2)要素配置对组织性能的影响;(3)动力系统对配置的影响.通过分析发现:调节设计性动力和演化性动力的平衡,组织可以通过控制要素配置影响组织协调性和适应性.得出的结论是:特定环境下的特定组织协调性和适应性同配置的平衡有关,当设计动力较小,演化动力较大,配置不平衡时,组织整体上表现出较差的协调性和适应性;当设计动力较大,演化动力较小,配置比较平衡时,组织整体上表现出较好的协调性和适应性.     

企业成长的内生能力模型与实证研究/FONT

企业成长是一国经济发展与繁荣的微观基础,具有极大的研究价值。本文拟运用现代生态学理论,分析关系企业成长的内源性因素,提出关键种因子、优势种因子和冗余种因子是企业成长能力的内在生态载体,它们的生态属性、生态结构、生态关系和形成机理构成了企业的内生能力。在此基础上,建立企业的内生能力模型。最后,以我国高技术企业2001-2005年的运行与发展情况为例,对企业的内生能力模型进行实证,形成促进中国企业可持续成长的策略。     

谈学生英语听力的提高

本文对英语听力课教师在课堂教学中应注意的几个方面进行了论述。笔者认为,在课堂上英语教师除了传授语言知识外,还应注重培养学生的积极参与意识和良好的心理素质,培养学生的听力技能以及跨文化交际能力。这样有利于提高学生的听力能力。     

非负约束条件下有效边界的链接性质及其确定方法

本文首先证明了有无非负约束条件下马柯维茨模型的解的存在与唯一性,随后通过构筑限制卖空条件下有效边界上各抛物线段链接的一致区间,分析了有效组合边界的链接与可微性质,并由此导出勿需寻优搜索即可确定有效边界表达式的方法,使计算量大为减少,更进一步完善了现有理论。     

基于R-Y通道冗余去除钢筋层阴影方法

将RGB颜色空间下的图像转到YUV颜色空间,分离出R、Y两个通道,利用图像在R、Y两个通道内的阴影区域灰度值接近且钢筋区域亮度差距明显的特性,提出一种基于R-Y通道冗余去除的算法,以消除阴影。对比几种常用的阴影消除方法,该方法可以较好地实现在工厂环境下钢筋层空间重影去除。     

五四思潮对中国近现代美术的影响

五四新化运动所提倡的反传统思潮对于20世纪中国美术的发展影响深远。通过对该问题的考察，作提出了对中国画如何面对传统和异质化、它的未来发展趋向和关键性动因是什么等问题的看法。     

基于异质性偏好的中国城镇居民消费结构研究

对消费者行为的传统研究是建立在"代表者行为"假设基础上的。它的一个明显特征是消费者偏好是同质的。但这与现实不符。为了能更准确地刻画不同特征的消费者偏好,本研究根据 Jorgenson(1982)的异质性消费加总理论,建立了中国的异质性偏好消费模型,并在此基础上深入研究了不同人口特征的中国城镇居民的消费结构。     

How do firms’ knowledge bases affect intra-industry heterogeneity? : An analysis of the Spanish pharmaceutical industry

This paper aims to contribute to the analysis of within industry inter-firm variety. The paper develops two themes: (i) the analysis of intra-industry heterogeneity, and (ii) the extent to which higher performance is associated with the capacity of firms to expand their knowledge base. The main contribution of the paper is empirical, based on a data source consisting of information on documents published in international scientific journals by Spanish pharmaceutical firms. The empirical results support the argument that the firm's knowledge base is a main driver of persistent heterogeneity within industries. We find systematic variety in terms of how firms articulate their research activities, and positive correlation between firms’ knowledge diversification and performance.