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目前 ,课堂教学仍然是教师传授知识与学生获得知识的基本形式 ,既要减轻学生过重的课业负担 ,又要提高教育质量 ,根本的出路在于向四十五分钟要质量 ,提高课堂教学的效益。以下是我的两点体会 : 一、愉快教学、培养兴趣 愉快教学 ,就是兴趣教学 ,就是要使学习充满兴趣 ,把欢乐还给学生。所以 ,在教学中 ,我把诱导学习动机、培养学习兴趣渗透到地理教学方法之中 ,使学生在学习的过程中 ,始终有一个内在的动力。比如中国地理第三章我国主要山脉这一节的教学里 ,我就编了一些容易上口的顺口溜 ,放在“教学小结”后 ,让大家齐读 ,以帮助学… 相似文献
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An alternative Monte Carlo strategy for the computation of global illumination problem was presented.The proposed approach provided a new and optimal way for solving Monte Carlo global illumination based on the zero variance importance sampling procedure. A new importance driven Monte Carlo global illumination algorithm in the framework of the new computing scheme was developed and implemented. Results, which were obtained by rendering test scenes, show that this new framework and the newly derived algorithm are effective and promising. 相似文献
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Medical image registration is the process of finding ageometric transformation between two image-based coordi-nate systems that have the same patient-based coordinates ,i .e .the same anatomic locations .The registered multi-mo-dality images lead to impro… 相似文献
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Dynamic distribution model is one of the best schemes for parallel volume rendering. However, in homogeneous cluster system, since the granularity is traditionally identical, all processors communicate almost simultaneously and computation load may lose balance. Due to problems above, a dynamic distribution model with prime granularity for parallel computing is presented. Granularities of each processor are relatively prime, and related theories are introduced, A high parallel performance can be achieved by minimizing network competition and using a load balancing strategy that ensures all processors finish almost simultaneously, Based on Master-Slave-Gleaner （ MSG） scheme, the parallel Splatting Algorithm for volume rendering is used to test the model on IBM Cluster 1350 system. The experimental results show that the model can bring a considerable improvement in performance, including computation efficiency, total execution time, speed, and load balancing. 相似文献
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随着图书馆微服务的发展和手机使用率的普及,手机APP在图书馆服务中运用得越来越广泛.文章介绍了手机APP的概念、特点及图书馆微服务的发展现状和需求,分析了手机APP在图书馆微服务中的应用形式、服务功能、存在不足及应用前景,对未来发展提出构想. 相似文献
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Ithasbeenwellknownthatglobalilluminationsimu latesthelighttransportamongallthesurfacesandthelightsourcesinavirtualsceneconsideringdiffusereflection/refrac tionandspecularreflection/refraction .Duetosimplicity,generalityanddimensionalindependence,MonteCarlomethodorrandomwalkmethodisoneofthemostimportantmethodsforsolvingthedifficultglobalillumination .Inpartic ular,MonteCarloisthelastresortwhenallotheranalyticalornumericalmethodsfail[1 ] . Lighttransportormultiplelightinteractionsamongthesu… 相似文献
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中国水墨画效果的计算机仿真 总被引：1，自引：0，他引：1
基于长期的绘画实践 ,对中国水墨画的各组成要素的材料特性及相互间作用关系进行了分析 ,提出分解水墨画效果的研究方法 ,给出了仿真模型体系 .借鉴粒子系统的基本概念 ,引入流体仿真技术及层对象混合算法 ,实现了中国水墨画的典型艺术效果 相似文献
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Theaimofthecomputergraphicsistoachieverea listicimage .Traditionalmethods ,suchasradiosity ,hav ingconstructedthemodelofthescene,produceimagesbyilluminationalgorithm .Conventional graphicsfacegreatdifficultiesintwoaspects :over complicatedcom putingandunrealisticimages.Theimage basedmodelingandrendering(IBMR)techniquesareapowerfulalterna tivetothetraditionalgeometry basedtechniquesforim agesynthesisandarewidelystudiedinrecentyears .Im age basedrendering(IBR)techniquesdirectlyrenderthenovelv… 相似文献