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冯丹 《中学生数理化(高中版)》2014,(9):83-83
近年来,在学生培养的过程中,高校愈加重视其选修课课程的建设情况.但在投入了大量的人力、财力和物力之后,高校学生却很少能够从选修课中获得有利于其发展的相关知识.因此,为了提高高校选修课的教学效率,本文以上海地区高校选修课中《化学·生活·趣味实验》课程为主要研究对象,从课程的内容、目标与实验方法的设定方面对高校《化学·生活·趣味实验》选修课课程的建设方法进行探索. 相似文献
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随着巴扬手风琴在我国的蓬勃发展,巴扬手风琴演奏教学是一个亟待研究和探索的时代性课题,一种更科学、更有效的教学方法应运而生。以“研究巴扬手风琴的演奏教学方法为中心”,力图帮助学生有效地解决演奏练习中的各种问题,使巴扬手风琴演奏教学真正科学的健康发展。 相似文献
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File semantic has proven effective in optimizing large scale distributed file system. As a consequence of the elaborate and
rich I/O interfaces between upper layer applications and file systems, file system can provide useful and insightful information
about semantic. Hence, file semantic mining has become an increasingly important practice in both engineering and research
community. Unfortunately, it is a challenge to exploit file semantic knowledge because a variety of factors could affect this
information exploration process. Even worse, the challenges are exacerbated due to the intricate interdependency between these
factors, and make it difficult to fully exploit the potentially important correlation among various semantic knowledges. This
article proposes a file access correlation miming and evaluation reference (FARMER) model, where file is treated as a multivariate
vector space, and each item within the vector corresponds a separate factor of the given file. The selection of factor depends
on the application, examples of factors are file path, creator and executing program. If one particular factor occurs in both
files, its value is non-zero. It is clear that the extent of inter-file relationships can be measured based on the likeness
of their factor values in the semantic vectors. Benefit from this model, FARMER represents files as structured vectors of
identifiers, and basic vector operations can be leveraged to quantify file correlation between two file vectors. FARMER model
leverages linear regression model to estimate the strength of the relationship between file correlation and a set of influencing
factors so that the “bad knowledge” can be filtered out. To demonstrate the ability of new FARMER model, FARMER is incorporated
into a real large-scale object-based storage system as a case study to dynamically infer file correlations. In addition FARMER-enabled
optimize service for metadata prefetching algorithm and object data layout algorithm is implemented. Experimental results
show that is FARMER-enabled prefetching algorithm is shown to reduce the metadata operations latency by approximately 30%–40%
when compared to a state-of-the-art metadata prefetching algorithm and a commonly used replacement policy. 相似文献
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一、知识构建
分析课程标准“联系城市地域结构的有关理论,说明不同规模城市服务功能的差异”（简称：“不同规模城市”）,关键在于两方面,其一是了解关于城市地域结构的理论,其二是明了研究的对象是城市群,不是单一城市个体。城市地域结构是指区域中的城市体系。研究城市地域结构可以帮助人们揭示城市发展布局规律。 相似文献
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在高等教育国际化大背景下,生源竞争不断加剧,为进一步提高我国高校在国际上的影响力和知名度,加强高校留学生管理势在必行。为此,本文在分析加强高校留学生管理必要性的基础上,指出目前高校留学生管理中存在的问题,并提出切实可行的解决策略。 相似文献
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通过对黑龙省图书馆的实地参观,作者对其布局、区域划分、网络设计、环境艺术、时代功能等方面进行了详细的论述,阐述了对省图书馆建筑的感想。 相似文献
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冯丹 《大科技．科学之谜》2009,(12)
一个曾经与可口可乐和福特汽车齐名的全球知名品牌,是如何败走麦城,进而消逝于世人的视野?按下快门,等待60秒,照片从相机前方噗哧一声吐出来。颜色清新而稍微有点失真,有种独特的艺术美感,没有底片,不能复制,不可润饰,在显影的最后一刻一切都是未知数,这就是宝丽来和它被人称为孤本艺术的拍立得照片。 相似文献
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家庭教育在中学生教育中具有明显的优势,在中学生教育中实现家庭教育与学校教育的结合是推动中学生形成健康正确价值观并健康成长的重要途径。本文在对家庭教育在中学生教育中的地位进行分析的基础上,对家庭教育开展的主要原则进行了分析。 相似文献
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文章简单介绍了EPUB标准的内容,归纳了EPUB3的新特性。结合我国数字出版产业的发展现状及其在发展过程中存在的问题,分析EPUB3对我国数字出版产业发展的启示,指出合理借鉴国外标准,建立具有自主知识产权的出版标准的重要性。 相似文献