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随着社会主义经济建设脚步的快速增长,我国的信息化进程也得到了飞速的发展。相应的,现代化的信息技术在教育过程中也得到了一定的应用,特别是计算机在教育领域的广泛应用极大地推动了教育进程的改革。因此,有效、合理地对计算机进行运用,是未来教育界能够得到长远发展的必要条件。本文通过对现代教育技术进行了探讨,重点对教学活动中有效地利用现代教育技术的策略进行了分析。 相似文献
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从理论上讲,在建筑初步设计阶段,计算机可以为建筑师提供很有意义的帮助。为了充分利用计算机的能力,有必要让计算机自己来完成初步设计。为了达到这个目的。在编写这个程序时,应把注意力集中在让机器易于使用而又不妨碍于人的创造性思维过程上。该程序工作时处理空间、窗户之类的设计元素而不用图纸。这样,该程序就就为一种更高效的工具,而且与现在用图纸来进行初步设计的方法完全不同。 相似文献
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As-cast Cu-La alloys with La contents in the range of 0–0.32 wt.% were fabricated by vacuum melting method. The effects of La on microstructure and mechanical properties of as-cast pure copper were investigated using optical microscopy(OM), scanning electronic microscopy(SEM), transmission electron microscopy(TEM), X-ray diffraction(XRD) and tensile test. The results showed that La had obvious effects on the solidification microstructure and the grain refinement of as-cast pure copper. With the increase of La content, the ultimate tensile strength, the yield strength and the microhardness increased gradually, but the elongation increased first and then decreased while La content exceeded 0.089 wt.%. The improvement of mechanical properties was attributed to the effect of grain refinement strengthening, solid solution strengthening, second phase strengthening and purifying. However, excessive adding La would deteriorate the elongation owing to the excessive Cu6 La phases. 相似文献
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