菲涅耳波带片成像时的像点分析

菲涅耳波带片可使入射光会聚起来，产生极大的光强，使点光源形成一系列的实像点和虚像点，其作用如同透镜成像。利用半波带分析法可分析菲涅耳波带片对称轴上的点光源通过菲涅耳波带片成像时像点在对称轴上的分布及 焦距的变化情况。     

The Uncertain Future for Digital Visual Collections in the University

Digital documents in the networked information environment fundamentally change the ways that visual materials can be used in education and scholarly discourse. These new uses raise questions about research library strategies with regard to digitized visual materials as a part of their collections, challenge assumptions underlying intellectual property rights for images and their scope, and offer ways in which visual literacy can become a more integral part of the common educational experience.     

文学欣赏的境界

文学欣赏是一种特殊的精神活动,达到的是一种精神升华的境界。在欣赏过程中,欣赏者注视着的是具体的艺术形象,文学欣赏是对形象艺术的感悟过程,在这个感悟过程中,欣赏者应始终是对文学作品的整体艺术的感受,而不是局部的寻章摘句,如仅仅盯住某个细节、某个动作,就不能感受到整部作品的特征。从某种意义上讲艺术作品创造欣赏者,因此,在进行文学欣赏时,一定要选择最为优秀的作品,——“取法乎上”。     

镜像服务器在我馆的应用

本文论述了镜像服务器的功能和特点,并介绍了其在本馆电子阅览室中的应用及使用方法。     

标志中图像和文字的组合式样及意义表述方式

标志中图形可以分为图像系统和字系统进行研究，一是确定图像和字之间的建构模式，二是确定图形和字之间谁为主要概念和谁为次要概念，以及主次概念在视觉选择过程中对标志内涵的理解方式。     

空间太阳望远镜中摆镜支架装夹变形的研究

空间太阳望远镜上的自适应光学摆镜要求具有高形面精度、高机械谐振频率,由于机械接口原因,只有通过连接支架才能装夹于摆镜平台。该支架结构直接影响摆镜的形面精度以及整个系统的机械谐振频率。运用接触非线性有限元技术,对四种不同结构的支架在螺栓装夹力作用下的变形进行详细计算,分析螺栓压力、螺栓压力差、重力以及螺栓垫片材料等因素对不同结构支架变形影响,为摆镜的装夹实验提供理论依据。     

论神话与神魔小说之关系

明清神魔小说因其题材形态上与神话的同一,经常而自觉地借用神话形象、观念、情节等母题,注定了与神话的不解之缘。本文从神话思维、神话形象、神话情节、神话主题等若干方面论述神话与神魔小说的关系。     

含蓄蕴藉的委婉语

委婉语是人类语言中普遍存在而又十分复杂的一种语言现象。委婉语属于社会文化现象,是文明社会的产物。委婉语不仅属于修辞学范畴,还是其他学科如社会语言学、心理学、哲学等的研究对象。委婉语深深植根于一个民族的社会土壤之中,蕴藏着丰富的文化内涵,承载着一个民族的社会结构、民族心理、宗教信仰、价值取向和风俗习惯等因素。委婉语是特定社会和文化的一面忠实的镜子,反映了形形色色的社会价值观和社会心理状态以及与之相应的文化传统。委婉语的生成、发展、转换乃至衰亡都与时代精神息息相关。委婉语的存在体现了意境和社会文化对语言使用的影响和制约,也体现了不同民族对交际方式的要求。     

Exploring Verbal,Visual and Schematic Learners' Static and Dynamic Mental Images of Scientific Species and Processes in Relation to Their Spatial Ability

The current study compared different learners’ static and dynamic mental images of unseen scientific species and processes in relation to their spatial ability. Learners were classified into verbal, visual and schematic. Dynamic images were classified into: appearing/disappearing, linear-movement, and rotation. Two types of scientific entities and their related processes were investigated: astronomical and microscopic. The sample included 79 female students from Grades 9 and 10. For the purpose of the study, three instruments were used. The Mental Images by Guided Imagery instrument was designed to investigate participants' visualization of static and dynamic mental images. The Water-Level Task was adopted to estimate participants' spatial ability. The Learning Styles Inventory was used to classify participants into verbal, visual and schematic learners. The research findings suggest that schematic learners outperformed verbal and visual learners in their spatial ability. They also outperformed them in their vividness of microscopic images; both micro-static and micro-dynamic images; especially in the case of appearing/disappearing images. The differences were not significant in the case of astronomical images. The results also indicate that appearing/disappearing images received the least vividness scores for all three types of learners.     

积极践行“三个代表”重要思想 公道正派搞好组织人事工作

本文结合自己的工作实际,畅谈学习“三个代表”重要思想,开展“树组工干部形象”活动的重要意义及落实其要求的五项具体措施。