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21世纪是一个信息化高速发展的时代,网络逐渐渗透到大学生的生活和学习的方方面面。不可否认网络给他们带来方便和快捷,但同时由于网络使用不当而产生的不良后果也日益凸现出来,相当一部分大学生因此而精神萎靡,丧失自信,人际关系紧张,甚至荒废学业,已严重地影响了他们的身心健康。 相似文献
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The paper reviews briefly the concise history of the publication of the LC Subject Headings by means of emphatically analysing the macroscopic and microscopic structure of LCSH 11-14 and making a quantization statistics and analysis of the latest edition.Also,a pertinent review for and an approach to the way forward of the LC Subject Headings with a list of strong and weak points are given which are of pratical and theoretical significances for reference to the subject indexing.3 tabs.9 refs. 相似文献
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