A Novel Whiteheadean Science Program for 14-16 Year Olds in England and Wales     

Michael Akeroyd 《Interchange》2007,38(2):167-173

A novel “Whiteheadean” science program was initiated in England and Wales in September 2006. Following a critical House of Commons report in 2002, the government altered the National Curriculum targets and thus forced the Examination Boards to alter their specifications in order to come in line. Assessment at GCSE level (i.e., the 14-16 year cohort) was criticised for: a) failing to inspire students to continue with science, b) discouraging students from thinking for themselves, c) neglecting contemporary science, d) lacking flexibility, and e) making practical work into a tedious and dull activity. The British government has insisted that all pupils in state funded schools must know the names of some modern scientists and their work. They must discuss some current scientific problems. History and philosophy of science is included under the topic heading “How Science Works.” In Chemistry these objectives have destroyed the traditional linear top-down sequential approach of teaching into an approach based more closely on Whiteheadean lines (cf., the ideas expressed in The Aims of Education, 1926, Chapters 1-3).  相似文献   

吴语处州方言豪肴二韵的分合     

王文胜 《台州学院学报》2007,29(4):40-45,59

通过实地调查，运用地理语言学的研究方法，平面揭示吴语处州方言豪、肴二韵的语音特点，并对其历史层次进行分析。处州方言豪、肴二韵的今读状态，是其自身演变和受外来方言影响的结果。  相似文献   

Random vibration analysis of switching apparatus based on Monte Carlo method     

ZHAI Guo-fu CHEN Yang-hua REN Wan-bin 《浙江大学学报(A卷英文版)》2007,8(3):422-425

The performance in vibration environment of switching apparatus containing mechanical contact is an important element when judging the apparatus’s reliability. A piecewise linear two-degrees-of-freedom mathematical model considering contact loss was built in this work, and the vibration performance of the model under random external Gaussian white noise excitation was investigated by using Monte Carlo simulation in Matlab/Simulink. Simulation showed that the spectral content and statistical characters of the contact force coincided strongly with reality. The random vibration character of the contact system was solved using time (numerical) domain simulation in this paper. Conclusions reached here are of great importance for reliability design of switching apparatus.  相似文献   

《说文解字》鬼部与中国鬼神文化     

吕胜男  王寒娜 《和田师范专科学校学报》2006,26(4):106-107

绵延几千年的鬼神文化是中国俗文化的根基,它间接反映了上古社会生活的各个层面,向我们展现精彩纷呈的上古文化风貌。本文通过对《说文解字》鬼部字的研究,从鬼神崇拜和恐惧鬼神两面来探讨汉民族的远古鬼神文化。  相似文献   

水稻免耕栽培生理基础——Ⅱ.免耕水稻的光合特性     

李小林  王永锐 《中山大学学报论丛》1989,(5)

威优64、陆青早1号作为试验材料,免耕能提高功能叶的光合速率、生育前期功能叶的呼吸强度、绿叶面积、叶绿素和可溶性蛋白含量,并延缓它们在生育后期的下降速率,降低后期功能叶的呼吸速率。主分量分析说明,在研究光合作用时,光合强度、叶绿素、可溶性蛋白质、叶片含氮量,可以任意选择一个作为光合特性指际。粒/叶比说明,免耕对源的改善较对库的改善较好些。  相似文献   

Homoharringtonine induces apoptosis of endothelium and down-regulates VEGF expression of K562 cells     

叶琇锦  林茂芳 《浙江大学学报(A卷英文版)》2004,5(2):230-234

Homoharringtonine (HHT) has currently been used successfully in the treatment of acute and chronic myeloid leukemias and has been shown to induce apoptosis of different types of leukemic cells in vitro. Emerging evidence suggests that angiogenesis may play an important role in hematological malignancies, such as leukemia. How ever, whether HHT can relieve leukemia by anti-angiogenesis is still unknown. We investigated the anti-angiogenesis potential of HHT with the human umbilical vein endothelial cell line (ECV304) and leukemic cell line (K562) in vitro. Cellular proliferation was determined by MTT assay and apoptosis was analyzed by flow cytometry. The mRNA expression of vascular endothelial growth factor (VEGF) was assessed by RT-PCR and VEGF protein production was detected by Western blot. Inhibition of cell proliferation and induction of apoptosis by HHT were discovered in ECV304 cells, and appeared in a dose- and time-dependent manner. Also, treatment with HHT caused down-regulation of VEGF mRNA expression in K562 cells in similar dose- and time-dependent manner and inhibition of VEGF protein production in K562 cells in response to the enhancing concentration of HHT. The results demonstrated that HHT could also induce apoptosis in endothelium and down-regulate VEGF expression in K562 cells. In conclusion, we believe HHT has anti-angiogenesis potential and speculate that HHT might exert its anti-leukemia effects via reduction of angiogenesis.  相似文献   

高等职业教育投资效益的经济学分析   总被引：3，自引：0，他引：3  

王林 《教学研究(河北)》2001,24(4):258-263

运用经济效益理论，对高等职业教育的投资效益指标进行了分析，并总结出提高高等职业教育投资效益的途径。  相似文献   

Attitudes toward computers of preservice teachers of hearing-impaired students     

D M Mertens  Z L Wang 《American annals of the deaf》1988,133(1):40-42

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Two categories of e-learning in Japan     

Minoru Nakayama  Rowena Santiago 《Educational technology research and development : ETR & D》2004,52(3):100-111

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浅谈交际教学法在英语教学中的应用     

王鲁宁 《辽宁科技学院学报》2003,5(4):72-74

从语言是人类交际工具的角度分析了传统英语教学方法的不足，提出了交际教学法这一较有影响力的语言教学法，及其在英语教学实践中运用的具体方法。  相似文献