共查询到20条相似文献，搜索用时 390 毫秒
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社会科学类文章指的是介绍、阐述、诠释、论证社会科学情况及成果的文章,包括哲学、政治学、经济学、教育学、语言学、社会学、历史学、文化学、伦理学、民俗学、宗教学、文艺 相似文献
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为庆祝中国成功申办2010年上海世博会五周年,汇集年度红人的2007超级盛典在上海大舞台璀璨上演。谢霆锋、赵薇、郑秀文、黄耀明、五月天、萧亚轩、李冰冰、蔡卓妍、张震岳、吴佩慈、信、徐帆、胡兵、薛之谦、姚晨、黄渤、苏有朋、赵本山等各路明星汇聚一堂,帕丽斯·希尔顿的到来更是带来让人惊艳的一刻。 相似文献
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贺功保 《中学数学研究(江西师大)》2009,(5):23-24
我们先约定：用a、b、c、p分别表示△ABC的边长和半周长;F、K、E、G、O、I、H、I1、I2、I3分别表示ΔABC的费马点、界心、九点圆的圆心、重心、外心、内心、垂心及∠A、∠B、∠C内的旁心;m、n、r分别表示KA、KB、KC的长度．于是,我们有 相似文献
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王生 《中学历史教学参考》2003,(7):26-27
对 2 0 0 3年高考 (夏季 )的评说 ,随考试的落幕而起 ,可谓众说纷纭 ;与此同时 ,投往本刊的评析稿件也如雪片纷飞。赞扬者溢于言表 ,批评者也颇显中肯。无论如何 ,这些评论都是我们总结和改革高考命题与教学复习值得借鉴的。尤值一提的是 ,成都成人教育学院历史系教授冯一下、南京师范大学历史系姚锦祥、西南师范大学历史地理所严奇岩、北京师范大学历史系博士生何成刚、浙江大学附中特级教师何凡、浙江温州育英国际实验学校孙双武等教研名家 ,都倾情赐稿 ,参与评析 ;而出自下列老师之手的稿件也无不显示出各自的分量和特色 ,他们是———江苏的王晓伟、范从华、王生、陆建良、刘爱军、樊兆龙、周龙祥、徐为章、张永生、赵立民、朱根林、徐士君 ,吉林的张守权 ,山西的杨作仁 ,北京的刘赋斌、赵建玲 ,甘肃的田鸿、杨源明 ,湖南的易卓、周振飞、何端跃、龚明才 ,河北的申宪法、李军素 ,河南的代玉东、马雪 ,江西的刘道梁、杨剑辉、艾美告、周良臣 ,福建的陈祥龙 ,山东的陈秀凤、刘世欣、赵桂臻、张凯、王立江 ,湖北的詹维东、张少男、王大良、姜桂平、陈佼、朱晨辉、程远斌、许青山、柳三星 ,安徽的黄静、黄小波、林桂平、吴长楼、胡志宏 ,浙江的胡尧兴、陈碧霄、徐金卫、陈春露、李永康、徐峻、姜建武、 相似文献
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红学的研究在国内外进行得轰轰烈烈。国外的红学研究主要是依据《红楼梦》的外译本。《红楼梦》先后被译成法语、英语、德语、意大利语、俄语、捷克语、匈牙利语、波兰语、罗马尼亚语、荷兰语、西班牙语、日语、朝语、越语、蒙古语、泰国语等,涉及的国家包括法国、英国、澳大利亚、新西兰、加拿大、美国、意大利、德国、俄国、捷克、匈牙利、波兰、西班牙、日本、朝鲜、韩国、越南、蒙古、泰国、新加坡等。《红楼梦》的对外翻译及研究主要有以下特点： 相似文献
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本文介绍了陕西平利方言的情态语气词,包括:唦、喔、啦、赦、噢、的、得、啵、的了、的耶、的啰、了啰、去了等,并描写它们的语气表达状态. 相似文献
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An approximate χ2 statistic based on McDonald's (1967) nonlinear factor analytic representation of item response theory was proposed and investigated with simulated data. The results were compared with Stout's T statistic (Nandakumar & Stout, 1993; Stout, 1987). Unidimensional and two-dimensional item response data were simulated under varying levels of sample size, test length, test reliability, and dimension dominance. The approximate χ2 statistic had good control over Type I errors when unidimensional data were generated and displayed very good power in identifying the two-dimensional data. The performance of the approximate χ2 was at least as good as Stout's T statistic in all conditions and was better than Stout's T statistic with smaller sample sizes and shorter tests. Further implications regarding the potential use of nonlinear factor analysis and the approximate χ2 in addressing current measurement issues are discussed. 相似文献
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Theories of psychology and mathematics education recommend two instructional approaches to develop students’ mental representations of number: The “exact” approach focuses on the development of exact representations of organized dot patterns; the “approximate” approach focuses on the approximate representation of analogue magnitudes. This study provides for the first time empirical evidence for the specific effects of these approaches by implementing them in a highly controlled learning environment. 147 first-graders were randomly assigned to one of three intervention groups that used an “exact”, an “approximate”, or both versions of the same computer game, or to a control group. Performance on tasks requiring exact or approximate number processing as well as achievement in arithmetic were measured before and after the intervention. Results show that performance improved on tasks related to the exact or approximate number aspect trained, but there was no crossover effect. Achievement in arithmetic increased for the experimental groups and tended to be higher after only exact or only approximate training. Implications for teaching and learning in the classroom are discussed. 相似文献
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将双向S-粗集上的近似算子推广为程度近似算子,定义了新的近似算子和近似集合,给出了近似算子和近似集合的性质定理,扩大了S-粗集理论的应用范围. 相似文献
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王用源 《信阳师范学院学报(哲学社会科学版)》2014,(1):90-94
通过历史语料考察概数义重复表达和矛盾表达的语言事实,概数义的重复表达不是语病,它只是为了满足表意的需要而没有遵守语言经济性原则;概数义的矛盾表达形式也客观存在,可利用语法结构层次和语义指向来化解"矛盾"。其实,重复表达和矛盾表达方式在语言中应该具有一定地位和存在价值。本文根据语法位置对概数词的词性进行了讨论,前置概数词为表示测度语气的副词,后置概数词为表数的助词,概数词"数"、"几"为数词。 相似文献
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黄正达 《浙江大学学报(A卷英文版)》2003,4(1):80-85
A judgment criterion to guarantee a point to be a Chen's approximate zero of Newton method for solving nonlinear equation
is sought by dominating sequence techniques. The criterion is based on the fact that the dominating function may have only
one simple positive zero; assuming that the operator is weak Lipschitz continuous, which is much more relaxed and can be checked
much more easily than Lipschitz continuous in practice. It is demonstrated that a Chen's approximate zero may not be a Smale's
approximate zero. The error estimate obtained indicated the convergent order when we use |f(x)|<ε to stop computation in software. The result can also be applied for solving partial derivative and integration equations.
Project supported by the Special Funds for Major State Basic Research (973) Program(No. 19990328) and the National Natural
Science Foundation of China(No. 10271112), and Y. C. Tang Disciplinary Development Fund of Zhejiang University, China 相似文献
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考虑计算四阶微分方程广义特征值的近似值的算法，运用泛函证明了主要结果：利用三个引理，采用Galerkin方法来构造适当的基函数，并利用Cauchv不等式给出了其特征值计算的误差估计式；最后得到其问题的算法，而且可以用第n次近似值来估计第n-1次的近似值的精确度。并给出了应用实例。 相似文献
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Kelly S. Mix Corinne A. Bower Gregory R. Hancock Lei Yuan Linda B. Smith 《Child development》2022,93(3):778-793
Place value concepts were measured longitudinally from kindergarten (2017) to first grade (2018) in a diverse sample (n = 279; Mage = 5.76 years, SD = 0.55; 135 females; 41% Black, 38% White, 8% Asian, 12% Latino). Children completed three syntactic tasks that required an explicit understanding of base-10 symbols and three approximate tasks that could be completed without this explicit understanding. Approximate performance was significantly better in both age groups. A factor analysis confirmed that syntactic and approximate tasks tapped separate latent variables in kindergarten, but not in first grade. Path analyses indicated that only kindergarten approximate performance predicted overall first-grade place value understanding. These findings suggest that explicit understanding of base-10 principles develops from implicit, partial knowledge of multidigit numbers. 相似文献
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采用Galerkin方法来构造适当的基函数,计算一类微分算子特征值的近似值,且可用第n次近似值来估计第n-1次近似值的精确度.随着n的增大,特征值λk的精确度逐步提高,只要适当选取n,就可以求得所需精确度的特征值的近似值,此算法具有一定的实用价值和理论价值. 相似文献
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Jos Renato De Nbrega 《Teaching Statistics》2017,39(1):16-19
A strategy to facilitate understanding of spatial randomness is described, using student activities developed in sequence: looking at spatial patterns, simulating approximate spatial randomness using a grid of equally‐likely squares, using binomial probabilities for approximations and predictions and then comparing with given Poisson probabilities. Key questions are discussed with students on concepts needed to understand the approximate models and to generate predictions based on the approximations. The sequence is structured to be interactive to encourage student's interest and curiosity. 相似文献