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科学技术的日新月异发展,推动了素质教育的进程,多媒体技术已经走进了课堂,本文阐述了小学数学教学应用多媒体技术,激发了学生浓厚的学习兴趣,化解了教学重点难点,营造了良好的氛围,优化了课堂教学,提高了课堂教学效率。 相似文献
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科学技术的日新月异发展,多媒体技术已经进入了课堂,优化了课堂教学,提高了教学效率,突出了学生主体地位,激发了学生学习欲望,调动了学生学习的积极性、主动性、创造性,扩大了知识容量,促进了学生想象思维的发展,实现了课堂教学过程的最优化。本文试就多媒体技术在小学语文教学中的应用进行了探讨。 相似文献
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科学技术的日新月异发展,推进了素质教育的进程,多媒体技术已经走进了课堂,为教师教学开辟了广阔空间。多媒体技术激发了学生浓厚的学习兴趣,化解了教学难点,创设了丰富的教学情境,有效地进行了德育渗透,突出了学生主体地位,提高了课堂教学效率。本文试就小学语文教学运用多媒体技术问题进行了探讨。 相似文献
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地震震动了人心,奥运鼓舞了人心,金融海啸席卷了人心。
失业了,郁闷;降息了,还银行贷款少了,高兴。人们在悲喜交织中动荡着。 相似文献
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史学梅 《数字社区&智能家居》2010,(8X):6779-6780
分析了传统WEB系统的局限性,介绍了Ajax技术及工作原理。员工通讯录管理系统采用EXT框架和MVC模式相结合,使用Ajax技术实现了员工管理系统,克服了传统WEB的弊端,实现了界面友好,降低了开发成本,减轻了服务器端的压力,提高了系统的响应速度,减少了使用者的等待时间,使用户感受到使用Ajax技术与EXT框架与MVC模式相结合的优越性。 相似文献
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倒退个五年左右吧,那时国外有个蛮著名的什么经济学家,提出了一个概念——眼球经济。大致的意思就是说——扯住你的眼球,那些网站之类的就能非常爽。因为他们可以烧钱嘛,有了众多的眼球来看,不对,他们的说法叫浏览——有了众多的眼球来浏览他们的站点,就能有大笔的投资,有了投资,就能让那些CEO们财大气粗地烧钱——反正不是他们的钱,不烧白不烧,烧了才NB。后来,时代进步了,金融风暴来了,网络泡沫破裂了,一批又一批网络公司倒闭了,烧钱的CEO们下台了,网民大叫不好了,中国网络经济完蛋了……谁知有线网络崩溃了,无线联络崛起了,手机短信火… 相似文献
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《Calphad》2020
A brief summary of the history of heat measurements is assessed from the Graeco-Roman time period to the first quantitative heat measurement in the 18th century. The concept of heat as energy is emphasized as a milestone in the development.The development of the modern calorimeters are summarized. Illustrations show the different types of equipment as designed for a variety of aims and purpose. In chronological order we illustrated the calorimeters by Lavoisier(1789), by Kawakami(1927), by Kubaschewski and Walter(1939), by Calvet(1950), by Kleppa(1955–2006), by Ticknor and Bever(1954), by Gachon(1979), by Cacciamani(1995), by Jung(2003) and by Navrotsky(2016).We discussed the theoretical and practical significance of calorimetry. The types of calorimetry measurements are briefly described. We also illustrated the international aspect of the use of this technique by showing some of the countries having actively participated in this effort.As a conclusion we compared to what extent the experimental measurements agree with theoretical predictions. 相似文献
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本文论述了Learning by Doing,Learning by Abstracting,Learning by Analogy,Learning byTeaching以及Learing by Simulating等教学模式。分析了其优点,并介绍了我们将其应用于嵌入式软件开发导论和系统结构等课程的效果。文中尤其强调了Learning by Abstracting的重要性。 相似文献
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设计了一种基于条纹投影的自动对焦显微镜系统。通过红外光源将光栅掩膜板投射到被测物表面,用于对焦判断。通过白光光源进行系统照明。使用带通滤光片分离出由红外光源投射的光栅像,并由线阵CCD采集,用于离焦量和离焦方向的判断。由白光光源照射得到被测物的像,并由面阵CCD接受用于直接观测。使用Tracepro对设计的系统进行仿真,分析得到适用于线阵CCD采集的光栅图的一维清晰度评价函数,并使用系统对不同被测物进行仿真对焦实验与误差分析。仿真结果表明,本系统可对不同被测物进行自动对焦。 相似文献
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Mountain region in remotely sensed imagery are usually covered by shadows,which reduce the accuracy of information extraction.Therefore,in this paper a method based on intensity restoration is putting forward necessarily.First,Shadow Detection (SD) was constructed by the Max function and the band ratio to identify shadows.Thus,mountain shadows were extracted combined with the slope factor and SD,through the grid randomly arranged verification point verification accuracy.Second,the intensity curve model of the shadow area was fitted by ground data of the shadow and the transition rules of pixel intensity from the shadow to non\|shaded area.Third,the intensity restoration model was established by the derivative function of intensity curve to remove shadows.The results of the model on Changting Landsat 8 imagery indicated the extraction accuracy of the mountain shadow was 99.06% and the Kappa coefficient was 98%;According to the cluster analysis,the restoration and non\|shaded samples were the same type;Processed by the intensity restoration model,the average intensity of the shadow was increased by 13%,and the standard deviation was reduced by 80% and the clustering distances was reduced by 96%.respectively,average intensity of the shadow increased by 6.7%,the standard deviation was reduced by 73.7% and the clustering distances was reduced by 88.3% when compared with ATCOR_3,and average intensity of the shadow reduced by 1.8%,the standard deviation was increased by 6.7% and the clustering distances was reduced by 90% when compared with unitary linear restoration model.In the process of removing the mountain shadows,the intensity restoration method is neither replacing the shaded pixels nor interference with non\|shaded pixels and could preserve the spectral and intensity characteristics of shaded pixels better.
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参数传递是Java语言中函数调用的重要步骤,清楚地了解参数传递的过程是编写出高质量程序所必需的。大多数程序设计语言具有传值调用和传引用调用两种方法。通过对典型程序的研究与分析可以看出Java语言的参数传递总是传值调用的,但是对于基本类型的参数和对象类型的参数来说,参数传递的情况不完全相同。Java语言不能直接使用传引用调用,但是可以通过数组的方式模拟传引用调用。 相似文献