To Block or Not To Block: That's Not the Question     

《The Journal of educational research》2012,105(4):196-202

Abstract

The block schedule emerged in the late 1980s as one structuring practice that allowed educators to address several problems associated with the traditional high school schedule. Among its posited advantages is the opportunity for teachers to engage students in active teaching strategies that require more time than the traditional schedule allows. Research on the use of teaching strategies in traditional and block schedule high schools is limited. Similarities and differences in survey responses of more than 2,000 teachers working in traditional- and block-schedule schools were described and analyzed in this study. In general, few differences were evident in opinions about level of use, appropriateness, and training for a variety of instruction approaches.  相似文献   

读周生杰博士《鲍廷博藏书与刻书研究》     

孙振田 《大学图书情报学刊》2012,30(2):80-81,85

周生杰博士的《鲍廷博藏书与刻书研究》一书对于徽籍文献巨子鲍廷博的研究与表彰有两点值得注意:其一,全景式展现鲍廷博之家世、行实及其藏书、献书、刻书活动等;其二,注重往深处开掘,揭示鲍氏藏书、刻书的背景、思想、特色及其影响等。此外,《研究》以细腻而又饱蘸情感的笔墨展开论述,为鲍廷博的研究与表彰增色不少。  相似文献   

特殊分块矩阵的Jordan标准形及应用     

杨晓苗  任芳国 《咸阳师范学院学报》2012,27(4):4-9

Jordan标准形是矩阵分析中一类重要的标准形。利用数学归纳法,证明4种特殊分块矩阵的Jordan标准形,并且应用所得的结果证明两个矩阵Kronecker积的特征值所对应Jordan块的个数及其阶。  相似文献   

基于GSM的电热水器控制系统设计     

刘焕茹 《石家庄职业技术学院学报》2012,24(2):43-46,50

基于GSM的电热水器控制系统利用单片机控制GSM模块接收来自手机的短消息,远程控制电热水器的开关并进行相关参数设定,实现了电热水器的远程启动,既避免等待,又减少电能浪费.  相似文献   

Intensive mode delivery of a neuroanatomy unit: Lower final grades but higher student satisfaction     

Stephney Whillier  Reidar P. Lystad 《Anatomical sciences education》2013,6(5):286-293

In 2011, Macquarie University moved to a three‐session academic year which included two 13‐week sessions (traditional mode) and one seven‐week session (intensive mode). This study was designed to compare the intensive and traditional modes of delivery in a unit of undergraduate neuroanatomy. The new intensive mode neuroanatomy unit provided the same quantity and quality of material to the same standard, delivered by the same teachers and over the same total hours, but in a shorter timeframe. All students enrolled in session 2 (traditional mode) and session 3 (intensive mode) were invited to participate in this study. The main outcome measures were the final course grades and level of satisfaction with the course. Although there was no significant difference between the two cohorts in self‐rated level of knowledge (P = 0.148), the traditional mode cohort achieved significantly higher final grades compared to the intensive mode cohort (P = 0.001). Similarly, the distribution of final grades was also different between the two cohorts. The two cohorts were equally satisfied with the unit overall, and with the lectures and tutorials. However, the intensive mode cohort was more satisfied with the laboratory practical classes compared to the traditional mode cohort (P < 0.001). Thus this study demonstrates that in the case of neuroanatomy, which is high in content, when the course is taught to the same standards as exist in the traditional mode of delivery, the students do not do as well even though they enjoy the course equally. Anat Sci Educ 6: 286–293. © 2013 American Association of Anatomists.  相似文献   

基于分块颜色和形状特征的图像检索     

陈慧 《泉州师范学院学报》2013,(6):53-56

针对图像检索中单一特征检索的不足,提出一种结合分块颜色特征和形状特征的图像检索方法,用空间局部信息增强全局颜色特征,采用分块颜色直方图提取图像的颜色特征,利用Hu不变矩提取图像的形状特征,以分块颜色和形状作为综合特征,采用相应的相似性度量方法进行图像匹配．实验结果证明了该方法的可行性,适用于基于区域或对象的图像检索．  相似文献   

块复合矩阵之块特征值的若干性质     

侯春娟 《贵阳金筑大学学报》2009,(1)

特征值问题的研究一直以来都是数学矩阵方面的重点课题,从而块复合矩阵的块特征值领域的研究也颇具系统。通常的特征值问题是块复合矩阵之块特征值的一种特殊形式。因此,块特征值问题的研究起到了十分重要的作用。讨论块复合矩阵之块特征值的若干性质,同时系统地研究块复合矩阵特征值及其本身相关的一些基本性质和特点。还研究了一类特殊块复合矩阵A和B可换的条件,并加以证明。  相似文献   

BP Group and CAS institute to co-establis an energy lab in Dalian     

Supported by the National Basic Research Program 《中国科学院院刊(英文版)》2008,22(1):54-54

The CAS Dalian Institute of Chemical Physics （DICP） and BP Group will join efforts to set up an Energy Innovation Laboratory （BP-DICP ElL） at DICP. The agreement for the new initiative was signed by DICP Director ZHANG Tao and BP Group Vice President Tony Meggs on 5 December, 2007 in Dalian.  相似文献   

PEO-PPO-PEO嵌段共聚物的聚集行为及其在胶团萃取中的应用     

苏延磊  刘会洲 《中国科学院大学学报》2005,22(6):767-772

从分子水平研究了PEO-PPO-PEO嵌段共聚物聚集过程中分子基团微环境和构象的变化.FTIR光谱给出了温度、溶剂、嵌段共聚物组成等影响PEO-PPO-PEO嵌段共聚物胶团结构的定量信息。用无机盐和脂肪醇调控PEO-PPO-PEO嵌段共聚物聚集,荧光光谱技术提供了降低PPO链段与水的相互作用,推动嵌段共聚物在水中胶团化的证据。用水凝胶包埋PEO-PPO-PEO嵌段共聚物,实现了萃取水中低浓度多环芳烃的工艺循环。  相似文献   

中国印刷图书文化的源与流   总被引：1，自引：0，他引：1  

肖东发 《图书情报工作》2000,44(7):5-9,51

印刷术的发明有很深的渊源,并且有一个不断积累的由量变到质变逐渐完善的长期过程,其间很难划分出鲜明的分界时限。根据古代文献,结合近年来的考古实物发现综合考证,可以得出雕版印刷术产生于隋至初唐之际的结论。公元7世纪前期的佛像雕印是雕版印刷术的最初形式;8世纪大量出现的经咒印本标志着雕版技术已有长足的进步;9世纪图文并茂的整部佛经《金刚经》印本说明雕版印刷术已臻成熟。  相似文献