共查询到20条相似文献,搜索用时 125 毫秒
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为培养新型高素质人才,大学化学教学改革势在必行。本文通过对国内外大学化学教学现状的比较,将国外大学化学教学的宝贵经验应用于国内大学化学课程改革,通过"根据专业差异,开展针对性教学"、"借助计算机及网络辅助教学平台,提高教学质量"、"培养创新能力,注重研究性学习"、"优化考核方式,建立综合评价机制"和"根据化学学科特点,开拓学生视野,激发科研兴趣"五个方面,探索改进高等教育中化学教学的举措。 相似文献
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计算机辅助教学CAI作为一种重要的、现代化的教学手段正广泛应用于教学过程中。本文分析说明了在化工原理课程的理论教学、实验教学和课程设计三个教学环节中运用计算机辅助教学CAI能够确保教学质量和教学效率的提高。 相似文献
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一、计算机辅助教学的应用现状 化工原理整个教学过程主要由课堂教学,实验教学和课程设计等环节构成。随着计算机应用的不断普及,近几年计算机辅助教学这一先进的现代化教学手段逐渐被国内一些高校所接受采用,并逐步渗透入化工原理教学的各个环节。理论课教学中将计算机引入大型习题的计算;实验教学中引入计算机仿真技术模拟实验全过程;课程设计引入计算机辅助计算和辅助设计。 国内一些院校在这方面做了大量的工作。取得了一定成效,这样为改革传统的化工原理教学手段,走出了一条教学改革的新路子。 但随着计算机科学的不断发展和计算 相似文献
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CAI是计算机辅助教学(Computer Aided Instructon)的简称,是一种利用计算机进行辅助教学的崭新教学方式。它以计算机为媒介,通过计算机与学生之间的交互作用达到教学目的。CAI的兴起是在教育领域中实施信息革命最具代表性的 相似文献
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采用计算机辅助教学CAI手段探索有机化学实验教学改革,以Flash为动画平台制作有机化学实验教学课件。总结了有机化学实验CAI课件进行教学的优点,解决了有机化学实验教学中存在的问题,体现了开放式、讨论式、互动式和个性化教学的特点,充分调动了学生主动参与学习的积极性,变传统的被动式教学模式为主动、生动的教学形式,培养学生的实际动手能力和创新能力。 相似文献
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在无机化学的教学中,由于该门课程内容多、理论性强,加上教学时数的进一步压缩,用传统的"黑板+粉笔"或"计算机+多媒体课件"的教学方法已显然不能解决"教学内容与教学时数"的予盾问题,迫切需要构筑"无机化学课程网网络"体系,推进无机化学网络教学的改革。 相似文献
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《化工制图》CAI教学的实践与思考 总被引:2,自引:1,他引:1
在面向21世纪的高等教育改革中,课程改革是一个重要内容,这不仅是各学科交叉综合发展的趋势增强的要求,也是信息技术突飞猛进发展的要求,同时,更是市场经济条件下对人才素质的适应性要求所决定的。 1995年原国家教委便发布了《面向21世纪高等教育教学内容和课程体系改革计划》通知,其中将计算机辅助教学作为教学内容、课程结构、课程体系改革的重要方面。《化工制图》作为化工类专业的必选课程,主要讲述化工设备图以及化工工艺图的阅读和绘制。笔者结合化工制图CAI教学的教改实践,对化工制图课的课程体系、内容等方面作了探讨和研究。 相似文献
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阐述了应用多媒体教学的必要性,及贵州科技工程职业学院院计算机辅助教学的具体运用,就运用过程中存在的问题,提一些个人看法。 相似文献
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苯乙烯是重要的石油化工原料。本文介绍了国内外苯乙烯生产的发展概况,合成乙苯,苯乙烯所用的催化剂种类,并就苯乙烯生产及催化剂的发展趋势提出了自己的观点。 相似文献
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Synthesis and characterization of homopolymers and copolymers of various acrylates and acrylonitrile
Various homopolymers and copolymers of methyl acrylate, ethyl acrylate, butyl acrylate, and acrylonitrile in different feed ratios were synthesized. These were characterized by IR, 13C-NMR, DSC, DTA, and TGA. Spectroscopic characterization helped in differentiating copolymers of different mol ratios. Thermal analysis revealed different degradation patterns for homopolymers and copolymers. The temperature and energy changes associated with various phase transitions were dependent on the chemical composition of homo- and copolymers, as expected. © 1993 John Wiley & Sons, Inc. 相似文献
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责任是人应主动承担的角色义务和对其因过失所造成后果应承担的责罚.有两层涵义:一是义务;二是后果.责任心是个体自觉做好分内事务和履行道德义务的心理倾向,是个性心理品质成分中自我特征维度上的重要内容.责任心具有两个方面的涵义:一是角色分内职责;二是角色道德义务.责任心是一种通过责任认知、责任个性和责任适应的动态形式表现出来的静态品质,责任心是责任心过程结构与责任心关系结构相互制约、相互影响的统一体. 相似文献
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G. R. Hamed 《The Journal of Adhesion》1983,16(1):31-39
A substantially greater detachment energy is required to strip a polyethylene tereph-thalate (Mylar) film from a styrene-butadiene-styrene (SBS) triblock copolymer compared to that for peeling from a random styrene-butadiene (SBR) copolymer. This is true even though the intrinsic interaction between the Mylar and each elastomer is expected to be similar because of their virtually identical chemical composition. It is proposed that this difference in peel strength (between the SBS and SBR) is a consequence of the much higher dissipative capacity of the former elastomer. Another manifestation of this is the higher cohesive tear strength of the SBS compared to the SBR. Extents of energy dissipation within each elastomer during detachment of the Mylar adherend are consistent with the hypothesis that the average maximum stress experience before detachment is some similar fraction of each elastomer's tensile strength. 相似文献
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The variation of the Au 4f binding energy of Au clusters with the cluster size has been established by measuring the binding energies of clusters whose size distributions were independently determined by HREM and STM. The binding energy increases significantly when the cluster size is less than 2 nm. Au-Cu bimetallic clusters of the composition Cu3Au have been deposited for the first time on carbon substrates. The shifts in the core level binding energies of the bimetallic clusters show the effect of alloying in the case of large clusters, but show effects of both alloying and cluster size in the case of the small clusters. The interaction of CO with Cu3Au clusters is stronger than with a bulk Cu metal. The interaction of CO with small Cu clusters also seems to be stronger than with bulk Cu or with large Cu clusters. 相似文献
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Polypentafluorostyrene (PPFS), polymethylacrylate (PMA), and poly(pentafluorostyrene-co-methylacrylate), poly(PFS-co-MA) were prepared and the wetting characteristics of polymer blends of PPFS and PMA were compared with that of poly(PFS-co-MA) via contact angle measurements. The critical surface tension of polypentafluorostyrene was found to be 22.6 dyne/cm, which is comparable to the value reported for polytrifluoroethylene (22 dyne/cm). The critical surface tension of poly(PFS-co-MA) is not linearly related to its composition. The polymer blends of PPFS and PMA exhibit significant surface enrichment of the fluoropolymer. The harmonic-mean method1 was employed to determine surface tensions of these polymers and many known polymers. It is found that the method produces useful surface tension data provided the contact angle values are derived from testing liquids of dissimilar polarity. 相似文献