改变心境 勇敢面对逆境     

明天在阳光 《教育教学论坛》2012,(6):257

<正>曾经有悲观主义哲学家说,我们出生时之所以哇哇大哭,是因为我们预知生命必然充满痛苦,至于迎接新生命到来的成人之所以满心欢喜,是因为世间又多了一个人来分担他们的苦难。当然,这是消极、负面的论调。人生的苦与乐,都是内心的感受,一切都得靠我们亲自体验,一  相似文献   

A simple microscopy assay to teach the processes of phagocytosis and exocytosis     

Gray R  Gray A  Fite JL  Jordan R  Stark S  Naylor K 《CBE life sciences education》2012,11(2):180-186

Phagocytosis and exocytosis are two cellular processes involving membrane dynamics. While it is easy to understand the purpose of these processes, it can be extremely difficult for students to comprehend the actual mechanisms. As membrane dynamics play a significant role in many cellular processes ranging from cell signaling to cell division to organelle renewal and maintenance, we felt that we needed to do a better job of teaching these types of processes. Thus, we developed a classroom-based protocol to simultaneously study phagocytosis and exocytosis in Tetrahymena pyriformis. In this paper, we present our results demonstrating that our undergraduate classroom experiment delivers results comparable with those acquired in a professional research laboratory. In addition, students performing the experiment do learn the mechanisms of phagocytosis and exocytosis. Finally, we demonstrate a mathematical exercise to help the students apply their data to the cell. Ultimately, this assay sets the stage for future inquiry-based experiments, in which the students develop their own experimental questions and delve deeper into the mechanisms of phagocytosis and exocytosis.  相似文献   

为大亚湾实验室新中微子振荡建造刻度系统     

《实验室研究与探索》编辑部 《实验室研究与探索》2012,31(12):23-24

今年3月8日大亚湾中微子实验国际合作组发言人、中科院高能物理研究所所长王贻芳在北京宣布,大亚湾中微子实验发现了一种新的中微子振荡(图1),并测量到其振荡几率(图2)。该发现被认为是对物质世界基本规律的一项新的认识,  相似文献   

Identifying high-functioning dyslexics: is self-report of early reading problems enough?     

Deacon SH  Cook K  Parrila R 《Annals of dyslexia》2012,62(2):120-134

We used a questionnaire to identify university students with self-reported difficulties in reading acquisition during elementary school (self-report; n=31). The performance of the self-report group on standardized measures of word and non-word reading and fluency, passage comprehension and reading rate, and phonological awareness was compared to that of two other groups of university students: one with a recent diagnosis (diagnosed; n=20) and one with no self-reported reading acquisition problems (comparison group; n=33). The comparison group outperformed both groups with a history of reading difficulties (self-report and diagnosed) on almost all measures. The self-report and diagnosed groups performed similarly on most tasks, with the exception of untimed reading comprehension (better performance for diagnosed) and reading rate (better performance for self-report). The two recruitment methods likely sample from the same underlying population but identify individuals with different adaptive strategies.  相似文献   

曾经的美丽     

袁泉  杨在华指导教师 《青少年日记》2012,(8):37-37

7月12日 晴 童年的记忆中,奶奶家门前有一大片农田。农田四周小河环绕,碧波荡漾。美丽的田野就像一部投影机,一年四季投影着大自然的神奇变化。春夏秋冬,季节轮回,田野宛如一幅千姿百态的风情画。初夏的田野是狂热的。一朵朵油菜花沐浴在阳光下,像个贪婪的孩子,吮吸着太阳,一天一天地长高。走在那弯弯曲曲的田埂上,心里不由感叹,嘿,这油菜花都比我高咯!上面的菜籽都很饱满,用指尖轻轻划开,  相似文献   

论新时期高校思想政治教育的发展趋势     

郧在廷  黄丹 《教育与职业》2012,(5):40-41

高校思想政治教育在全新的境遇下,面临着机遇和挑战,呈现出新的发展趋势,即思想政治教育的主体化、立体化、差异化和隐性化。新时期高校思想政治教育的"四化"发展趋势,既是高校思想政治教育理论和实践创新的结果,也是现代社会对高校思想政治教育的客观要求,具有一定的必然性和时代意义。  相似文献   

带着理想去流浪的女子     

带着理想去流浪 《广东第二课堂》2012,(1)

这个假期好像只下了一场雨。我喜欢深夜下雨,沙沙的雨声在窗外响起,时大时小。从小到大．我一直都是一个夜猫子．喜欢在夜阑人静的时候,一个人窝在房间里．懒洋洋地趴在床上,捧一本心爱的书籍贪婪地阅读,此时仿佛天地间只有自己一个人。若是这样的时刻能够下起一场雨来．那真是堪称人间一等一的美事。  相似文献   

经济学中何以有实验     

K·宾默尔 《淮阴师范学院学报(哲学社会科学版)》2012,34(2):158-163,279

科学的经济学家没有在实验室浪费他们的时间。科学的实验经济学家会专心于双重工作:在经济理论有效的地方夯实该理论,以及在该理论无效的情况的地方提供修正这个理论的灵感源泉。在理论完全不起作用的情景下,我们需要接受我们的局限性,并且留意像心理学这样的学科以寻求答案。实验中的经济学家的比较优势是,不仅了解经济学理论的形式理论,而且了解推导出这些形式理论的假定可能有效的经济环境和制度。  相似文献   

Separating the fish from the sharks: a longitudinal study of preschool response inhibition     

Wiebe SA  Sheffield TD  Andrews Espy K 《Child development》2012,83(4):1245-1261

The development of response inhibition was investigated using a computerized go/no‐go task, in a lagged sequential design where 376 preschool children were assessed repeatedly between 3.0 and 5.25 years of age. Growth curve modeling was used to examine change in performance and predictors of individual differences. The most pronounced change was observed between 3 and 3.75 years. Better working memory and general cognitive ability were related to more accurate performance at all ages, but relations with speed changed with age, where better cognitive skills were initially related to slower responding, but faster responding at later ages. Boys responded more quickly and were more accurate on go trials, whereas girls were better able to withhold responding on no‐go trials.  相似文献   

International trends in health science librarianship: part 1 - the English speaking world     

Browne R  Lasserre K  McTaggart J  Bayley L  McKibbon A  Clark M  Perry GJ  Murphy J 《Health information and libraries journal》2012,29(1):75-80

This is the second in a series of articles exploring international trends in health science librarianship in the first decade of the 21st century. The invited authors were asked to reflect on developments in their country - viz. Australia, Canada, New Zealand and the United States. Future issues will track trends in Northern Europe, the Nordic countries, Southern Europe and Latin America. JM.  相似文献