菲涅耳波带片成像时的像点分析     

张明霞  刘保义 《天水师范学院学报》2003,23(5):71-72

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。  相似文献   

The Uncertain Future for Digital Visual Collections in the University     

Clifford A. Lynch 《Archives and Museum Informatics》1997,11(1):5-13

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.  相似文献   

文学欣赏的境界     

喻莉娟 《六盘水师范高等专科学校学报》2004,16(1):43-46

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”。  相似文献   

标志中图像和文字的组合式样及意义表述方式     

茅忠德 《连云港职业技术学院学报》2002,15(4):62-64

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。  相似文献   

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

Sulaiman M. Al-Balushi 《International Journal of Science Education》2013,35(3):460-489

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.  相似文献   

积极践行“三个代表”重要思想 公道正派搞好组织人事工作     

郇延民  冯永光 《潍坊教育学院学报》2003,16(4):15-16,21

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。  相似文献   

用ASP实现网络数据库中图片的上传与显示     

严双林 《扬州职业大学学报》2005,9(1):32-34

提出了图片在网络数据库中的上传与显示技术，并用ASP代码与Access和SQL Server进行了系统实现。  相似文献   

周大新小说中抗争女性形象的审美意蕴   总被引：1，自引：0，他引：1  

曹建玲 《南阳师范学院学报》2004,3(4):79-81

周大新在他的盆地小说中塑造了一批生动、鲜活、性格复杂、充满抗争精神的女性形象,她们抗争的对象不一、方式不同,但作家对她们身上所表现出的生命力和人性的追求给予了充分的肯定与赞颂,表现了鲜明的女性立场和现代意识。  相似文献   

城门失火殃及池鱼──谈《红楼梦》中晴雯与赵姨娘形象塑造的潜在互动关系     

陈建平 《天津职业院校联合学报》2000,(4)

《红楼梦》中晴雯的遭遇令人同情,她被赶出贾府后悲愤而死．造成这个悲剧的原因是既复杂又隐微的;如果直接归之于某一件事或某一个人,都失之简单化．说到底,晴雯之死应是王夫人由赵姨娘“从宝珠变成鱼眼珠”的过程中得出的“经验”所致．  相似文献   

The engagement agenda,multimedia learning and the use of images in higher education lecturing: or,how to end death by PowerPoint     

David Roberts 《Journal of Further & Higher Education》2018,42(7):969-985

This article is concerned with student engagement and understanding in large group teaching in Higher Education (HE). Specifically, it is concerned with the application of Multimedia Learning (MML) methods in Politics, History, International Relations, Sociology, Social Work, and Business and Economics teaching that privilege the use of images to complement text in lecture presentations. This ‘visual’ method, it is claimed in the literature, generates engagement and understanding better than text alone. This article develops, applies and empirically tests with students, MML methods across a range of Higher Education disciplines over three years. The research deploys Participatory Action Research (PAR) methods engaging students as active agents of investigation and change. It finds evidence to support the hypothesis that apposite images combined with reduced text increases students’ engagement and understanding with academic content, but that much formal research needs to expand on the range of demographics tested.  相似文献