对爱因斯坦相对论的改正   总被引：3，自引：1，他引：2  

徐宽 《科技通报》1998,14(6):389-394

在审查相对论质速关系的基础上 ,提出了对相对论的改正方案 ,建立了一种全新的理论。新理论克服了相对论的缺陷。应用已有的实验数据对结论进行了必要的检验 ,给出了宇宙学和科研生产实践中的证据  相似文献   

A study of serum lipid profile part-1: Establishment of normal reference values of serum lipid levels in healthy vegetarian population of Gujarat     

C. I. Jhala  U. V. Shah  T. K. Shah  B. K. Naik  J. D. Dafda 《Indian journal of clinical biochemistry : IJCB》1998,13(1):1-7

Fasting samples of 1329 apparently healthy vegetarian Gujarati population were tested for total cholesterol, triglycerides and three major fractions of lipoproteins, i.e. high density lipoproteins, low density lipoproteins and very low density lipoproteins. All the values showed marked increase with the age. Except for serum triglycerides, values differ in males and females in the age group of above 45 years. Compared to Northern Indian population low density lipoprotein and high density lipoprotein values were higher, but values of triglycerides and very low density lipoproteins were lower. There is no significant difference in total cholesterol values. Compared to Southern Indian population low density lipoprotein and very low density lipoprotein values were higher but values of triglycerides, total cholesterol and high density lipoprotein were lower. All serum lipid values were significantly lower than the Westem population. The range of values for both the sexes is presented for different age groups.  相似文献   

On parallel computing — Indian trends     

U. N. Sinha 《Resonance》1998,3(11):2-5

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Multiple worlds/mismatched meanings: Barriers to minority women engineers     

Pauline W. U. Chinn 《科学教学研究杂志》1999,36(6):621-636

Despite receiving over 55% of U.S. bachelor's degrees in 1996, women earned <19% of engineering degrees. Polynesian and Filipino women compose an almost vanishing percentage of these graduates. Interviews with four minority women who were close to or had recently completed degrees in civil or mechanical engineering reveal issues of class, race, and gender that affect school success in general and science success in particular. They specifically describe how stereotyping can lead to social stratification and unequal academic and occupational expectations. Narratives are interpreted through Butler's sex/gender theories, Bhaba's postcolonial theories of mimicry, Bourdieu's concepts of social capital and habitus, Bakhtin's theory of speech genres, and Stanton‐Salazar's concept of social networks. The results suggest that Grade K–12 educators, especially in elementary grades, need to challenge practices that segregate students into groups that reflect socioeconomic and ethnic status. In addition to content knowledge, teachers need the kind of multicultural preparation that will help them work effectively with diverse students and their families. © 1999 John Wiley & Sons, Inc. J Res Sci Teach 36: 621–636, 1999  相似文献   

Authentic science experiences as a vehicle for assessing orientation towards science and science careers relative to identity and agency: a response to “learning from the path followed by Brad”     

Pauline W. U. Chinn 《Cultural Studies of Science Education》2009,4(3):639-647

This response draws from the literature on adaptive learning, traditional ecological knowledge, and social–ecological systems to show that Brad’s choice is not a simple decision between traditional ecological knowledge and authentic science. This perspective recognizes knowledge systems as dynamic, cultural and historical activities characterized by diverse worldviews and ways of constructing and legitimizing knowledge. Brad’s decision is seen as an example of adaptive learning, identity development and personal/collective agency oriented to increasing tribal influence in resource management decisions and policies. I will conclude that science literacy for all is not served by a transcendent, universal, Western modern view of science.

Pauline W. U. ChinnEmail:

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Factors influencing faculty satisfaction with online teaching and learning in higher education     

Doris U. Bolliger  Oksana Wasilik 《Distance Education》2009,30(1):103-116

Faculty satisfaction is considered an important factor of quality in online courses. A study was conducted to identify and confirm factors affecting the satisfaction of online faculty at a small research university, and to develop and validate an instrument that can be used to measure perceived faculty satisfaction in the context of the online learning environment. The online faculty satisfaction survey (OFSS) was developed and administered to all instructors who had taught an online course in fall 2007 or spring 2008 at a small research university in the USA. One hundred and two individuals completed the web‐based questionnaire. Results confirm that three factors affect satisfaction of faculty in the online environment: student‐related, instructor‐related, and institution‐related factors.  相似文献   

An industrial educational laboratory at Ducati Foundation: narrative approaches to mechanics based upon continuum physics     

Federico Corni  Hans U. Fuchs  Giovanni Savino 《International Journal of Science Education》2018,40(3):243-267

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Policy and evidence: a critical analysis of the Year 1 Phonics Screening Check in England          下载免费PDF全文

Hans U. Grundin 《Literacy》2018,52(1):39-46

“This paper aims to present a critical analysis of the Year 1 Phonics Screening Check (PSC), with special focus on the relationship between the UK Department for Education's policy‐making and the evidence considered in the process of developing and evaluating the PSC. The reports from the in‐house Standards and Testing Agency and from commissioned external organisations with limited remits have been analysed, with emphasis on how the screening check findings have been used in DfE decision‐making. My conclusion is that the department has overestimated both the validity and the reliability of the check: partly because important sources of measurement error have not been explored, and partly because the available evidence has not been analysed in sufficient depth — or perhaps simply been ignored by the department. The whole phonics screening check seems to be the product of policy‐based evidence, rather than evidence‐based policy‐making. This has, in my view, seriously undermined the value of the PSC as a screening instrument, and one must wonder whether it is ‘fit for purpose’.  相似文献   

新升本科院校内部控制制度建设初探     

陈燕  刘娟  谢军  秦凤萍  张贤昌 《六盘水师范高等专科学校学报》2013,(5):86-88

高校的内部控制建设是一个新的课题,是高校提高综合办学实力和社会竞争力的必要手段,在高校管理中的作用越来越重要,建立和完善高校内部控制制度已势在必行。针对新升本科院校内部控制存在的意识淡薄、制度不健全、缺乏风险控制意识等问题进行了分析探讨,提出了相关建议及措施。  相似文献   

Youths with migration backgrounds and their experiences of physical education: an examination of three cases     

D. Barker  N. Barker-Ruchti  M. Gerber  E. Gerlach  S. Sattler  U. Pühse 《Sport, Education and Society》2013,18(2):186-203

While understanding young people has never been easy, migration trends make it increasingly difficult. Many classrooms have become culturally heterogeneous and teachers are often faced with pupils with diverse linguistic and cultural heritages. Current scholarship suggests that as a discipline, physical education has not adapted to this diversity. In fact, commentators have suggested that physical education alienates pupils from minority groups and that traditional practices work to maintain cultural difference. The broad objective of this paper is to provide insights into how physical education intersects with biographies shaped by migration. Drawing from a case study investigation, this paper presents interview data from three youths with migration backgrounds living in a German-speaking region of Switzerland. The cases were selected because they highlight various ways in which physical education (PE) comes to make sense for adolescents. The key arguments that we develop are that ethnicity often works at an implicit level in PE, that young people experience the effects of migration backgrounds in diverse ways, and that migrants themselves support official educational discourses that work to disadvantage people with migration backgrounds. A key implication is that in a cultural milieu in which generalisations are normal and sometimes considered desirable, both researchers and practitioners need to be wary of racialising discourses. As an alternative, it is suggested that focusing on individual processes can improve the conceptualisation and implementation of physical education pedagogies.  相似文献