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991.
992.
Ada?K.?H.?Pak Alice?Cheng-laiEmail author Ivy?F.?Tso Hua?Shu Wenling?Li Richard?C.?Anderson 《Reading and writing》2005,18(5):437-454
This study investigated the development of visual chunking skills in the processing of Chinese characters among Hong Kong
pupils. One-hundred-seventy-nine primary school students from first, second and fourth grades were administered a character
copying task. Children as young as 6 years of age were aware of character units and were able to apply visual chunking strategies
when processing characters. Children in higher grades performed better than those in lower grades on every character type,
and the types of errors they made revealed that their chunking level was higher than that of younger children. Differences
between ability groups emerged in second grade and vanished in fourth grade, suggesting that children with a lower reading
ability are slower to develop advanced chunking skills. 相似文献
993.
Serum protein fingerprinting coupled with artificial neural network distinguishes glioma from healthy population or brain benign tumor 总被引:6,自引:0,他引:6
To screen and evaluate protein biomarkers for the detection of gliomas (Astrocytoma grade Ⅰ-Ⅳ) from healthy individuals and gliomas from brain benign tumors by using surface enhanced laser desorption/ionization time of flight mass spectrometry (SELDI-TOF-MS) coupled with an artificial neural network (ANN) algorithm. SELDI-TOF-MS protein fingerprinting of serum from 105 brain tumor patients and healthy individuals, included 28 patients with glioma (Astrocytoma Ⅰ-Ⅳ), 37 patients with brain benign tumor, and 40 age-matched healthy individuals. Two thirds of the total samples of every compared pair as training set were used to set up discriminating patterns, and one third of total samples of every compared pair as test set were used to cross-validate; simultaneously, discriminate-cluster analysis derived SPSS 10.0 software was used to compare Astrocytoma grade Ⅰ-Ⅱ with grade Ⅲ-Ⅳ ones. An accuracy of 95.7%, sensitivity of 88.9%, specificity of 100%, positive predictive value of 90% and negative predictive value of 100% were obtained in a blinded test set comparing gliomas patients with healthy individuals; an accuracy of 86.4%, sensitivity of 88.9%, specificity of 84.6%, positive predictive value of 90% and negative predictive value of 85.7% were obtained when patient's gliomas was compared with benign brain tumor. Total accuracy of 85.7%, accuracy of grade Ⅰ-Ⅱ Astrocytoma was 86.7%, accuracy ofⅢ-Ⅳ Astrocytoma was 84.6% were obtained when grade Ⅰ-Ⅱ Astrocytoma was compared with grade Ⅲ-Ⅳ ones (discriminant analysis). SELDI-TOF-MS combined with bioinformatics tools, could greatly facilitate the discovery of better biomarkers. The high sensitivity and specificity achieved by the use of selected biomarkers showed great potential application for the discrimination of gliomas patients from healthy individuals and glioma from brain benign tumors. 相似文献
994.
关于因材施教的断想——做苏格拉底式还是做孔子式的教师? 总被引:1,自引:0,他引:1
因材施教是地道的教育原则,当人们追溯这条原则起源的时候,追到了西方的圣贤苏格拉底和中国的圣贤孔子。苏格拉底的产婆术、孔子的启发式教学被后人归纳为因材施教的教学原则。我们可以从两位圣贤展开教育实践的不同前提进行分析,判断一下苏格拉底和孔子谁更像教育学意义上的教 相似文献
995.
996.
安姝 《呼伦贝尔学院学报》2006,14(1):7-9
察举制是科举制的前身与母体。在长达七八百年的选官过程中,察举制曾经有:“以德取人”、“以能取人”、“以文取人”、“以名取人”和“以族取人”等等因素作用其间,结果则是“以文取人”为主导的原则、标准和方法。最终成了定局,发展成为科举制。从察举制到科举制,是中国古代官僚体制理性行政的必然。 相似文献
997.
998.
通过对遗传学一题多解,探讨解题的思路和方法,以利于学生巩固和融会贯通所学知识,全面掌握遗传学的基本概念、规律、理论和基本研究方法,培养学生分析问题和解决问题的能力。 相似文献
999.
刘树友 《渭南师范学院学报》2003,18(1):82-85
素质教育是我国政府面向新世纪实施的一项重要战略。本文从提高学生思想道德素质、人文素质、身心素质、“通才”培养、创新能力培养五个方面评述了《中国古代史》学科和素质教育的紧密联系。 相似文献
1000.
普通话水平测试是一项国家级的测试,属于政府行为。要保证普通话水平测试的信度和效度,必须从以下几个方面完善它的机制:1.建立完整的试题库,实行教考分离的原则;2.细化评分的标准,使评分有据可依;3.加强测试员队伍的培养和考核;4.加强考前辅导工作,做好考后复审工作;5.启动大中小学教师队伍的测试工作,为以后公务员的测试做好准备。 相似文献