“我有一个梦想”之奋斗与悲歌演说     

谢春晖 《语文学刊:高等教育版》2008,(8):62-65

“我有一个梦想”是美国非裔民权运动领袖马丁·路德·金的著名演说。本文从历史的角度。展开对美国非裔民权奋斗的研究,探讨民权运动的历程和民权运动的主要方式——悲歌演说,阐明马丁·路德·金的“我有一个梦想”是美国非裔百年不屈不挠的民权奋斗的结晶。  相似文献   

一种新型甲基碘化吡啶的合成与表征     

刘道富  丁爱民 《淮南师范学院学报》2008,10(3):136-137

以水合肼、二硫化碳、氯化苄为原料合成了肼基硫代酸苄酯;再以碘甲烷、4-甲酰基吡啶、肼基硫代酸苄酯为原料,合成了新型的有机化合物C16H16N3S2I。其结构经IR、UV、^1HNMR、ESI—MS和元素分析确证。  相似文献   

释“吾丧我”——以《庄子·内篇》为例     

赵雪敏 《巢湖学院学报》2021,(1)

“我”是指沾染了世俗气息的我,“吾”是天然本性的我。“吾”的质性经过外部和自身因素的施动作用而分化出“成心”和“有待”的“我”。庄子为达体道超脱之境界做出策应,主张“吾”通过“心斋”和“坐忘”来达到“丧我”。心斋的境界是虚,即虚以待物,以虚来强调心灵的涵容性,让自己摒除杂念,虚静纯一,内心复归于空明洁净,以凸显“吾”的存在;“坐忘”要求进入到物我两忘、是非皆泯、十方虚空、一灵独觉的境界,如此便可“同于大通”,达到心凝形释、神与物游、与物冥一的“物化”状态,“物化”之后,人的身心两方面俱得超脱,由此便实现了体道逍遥的最终目标。  相似文献   

功成身退戏沧洲——李白“直挂云帆济沧海”新解     

徐伯鸿 《信阳师范学院学报(哲学社会科学版)》2008,28(4):123-125

李白《行路难三首》其一的结句“长风破浪会有时,直挂云帆济沧海”,长期以来,人们一直把它当成“相信自己的理想抱负总有实现的一天”的意思来看待。事实上,这两句诗是李白人生理想的完整表达,第一句侧重表达的是坚信自己的政治理想和抱负总有实现的一天,第二句则表达的是坚信自己“功成身退”的生活理想一定会实现。  相似文献   

Comparing teacher salaries: Insights from the U.S. census     

Lori L. Taylor 《Economics of Education Review》2008

Teachers are more likely to be found in rural communities and low-wage metropolitan areas than are college-educated workers in other occupations. This analysis explores the extent to which the geographic distribution of teachers explains the relatively low average wage found in other studies. The analysis suggests that excluding geographic indicators from the analysis downwardly biases estimates of relative teacher wages. One important implication of these findings is that researchers should pay attention to geographic wage variations when making earnings comparisons between teaching and other occupations.  相似文献   

Incentives and effort in the public sector: Have US education reforms increased teachers’ work hours?     

Christiana Stoddard  Peter Kuhn 《Economics of Education Review》2008

Beyond some contracted minimum, salaried workers’ hours are largely chosen at the worker's discretion and should respond to the strength of contract incentives. Accordingly, we consider the response of teacher hours to accountability and school choice laws introduced in US public schools over the past two decades. Total weekly hours of full-time teachers have risen steadily since 1983 by about an hour, and after-school instructional hours have increased 34 percent since 1987. Average hours and the rate of increase also vary widely across states. However, after accounting for a common time trend in hours, we find no association between the introduction of accountability legislation and the change in teacher hours. Education reforms are, however, associated with an increase in student test scores, presumably due to other types of changes in school and teacher behavior.  相似文献   

Three measures of returns to education: An illustration for the case of Spain     

María Arrazola  José de Hevia 《Economics of Education Review》2008

In this article, in a context of wage equations with sample selection, we propose a novel interpretation of the partial effects linked to education as additional measures of returns to education that complement the traditional one, which is directly obtained from the estimation of the wage offer equation. Using European Household Panel data for Spain these partial effects were calculated. The results show that there are incentives in Spain for investing in education not only because it means an increase in wages but also because it raises the probability of obtaining any wage at all.  相似文献   

Efficiency,technology and productivity change in Australian universities, 1998–2003     

Andrew C. Worthington  Boon L. Lee 《Economics of Education Review》2008

In this study, productivity growth in 35 Australian universities is investigated using non-parametric frontier techniques over the period 1998–2003. The five inputs included in the analysis are full-time equivalent academic and non-academic staff, non-labour expenditure and undergraduate and postgraduate student load while the six outputs are undergraduate, postgraduate and Ph.D. completions, national competitive and industry grants and publications. Using Malmquist indices, productivity growth is decomposed into technical efficiency and technological change. The results indicate that annual productivity growth averaged 3.3% across all universities, with a range from −1.8% to 13.0%, and was largely attributable to technological progress. However, separate analyses of research-only and teaching-only productivity indicate that most of this gain was attributable to improvements in research-only productivity associated with pure technical and some scale efficiency improvements. While teaching-only productivity also contributed, the largest source of gain in that instance was technological progress offset by a slight fall in technical efficiency.  相似文献   

Double your major,double your return?     

Alison F. Del Rossi  Joni Hersch 《Economics of Education Review》2008

We use the 2003 National Survey of College Graduates to provide the first estimates of the effect on earnings of having a double major. Overall, double majoring increases earnings by 2.3% relative to having a single major among college graduates without graduate degrees. Most of the gains from having a double major come from choosing fields across two different major categories. Graduates who combine an arts, humanities or social science major with a major in business, engineering, science or math have returns 7–50% higher than graduates with a single major in arts, humanities or social science. But such double major combinations have returns no higher than single majors in business, engineering, science or math. Majors combining business and science or math have returns more than 50% greater than the returns to having a single major in these fields.  相似文献   

基于Nafion固定天青I和纳米CdS共修饰玻碳电极的H2O2生物传感器     

李华刚 《黔南民族师范学院学报》2008,28(3):68-72

利用滴涂于玻碳电极（GCE）表面的以Nnfion膜中负电性的磺酸基与天青I（AI）阳离子之间的静电作用,实现天青I在电极上的固定化,再通过静电吸附和自组装技术将纳米CdS吸附的辣根过氧化物酶（HRP）修饰到电极表面,制备出性能良好的H2O2生物传感器。采用循环伏安法（CV）和计时电流法考察了该传感器的电化学性质。实验表明,该传感器具有良好的生物催化活性,较高的灵敏度,良好的选择性和稳定性,且易于制作等特点。响应电流与H2O2浓度在8．0×10^-6～1．6×10^-3 moL／L范围呈现良好的线性关系,检出限为2．72×10^-6 moL／L。  相似文献