On the sovereignty of school rhetoric: Representations of science among scientists and guidance counsellors

This article sheds light on views held by actors who enjoy a certain degree of institutional legitimacy for “talking about science,” either as practitioners in the field of science or as guidance counsellors working with youths interested in having a science-related career. One hundred and seven scientists and technologists who worked either in a university or industrial research centre and 182 guidance counsellors working in high school settings participated in our survey; the main instrument for data collection was a questionnaire developed using the bank of items from “VOSTS.” Excepting a few aspects of the production of scientific knowledge, the predominant tendency suggests that both professional groups share a relatively similar discursive outlook on science—an outlook which presents a “family resemblance” with the usual school rhetoric on the exceptional status of science.     

浅谈对比法在高等代数教学运用的意见

文章通过新与旧的对比、正面与反面的对比、正确与错误的对比、题型间的对比、解题方法的对比等,运用具体的例子,讨论对比法在高等代数中的运用、论述运用对比法教学的好处。     

2009年中国科技论文统计与分析简报

自1987年以来,中国科学技术信息研究所一直承担着中国科技人员在国内外发表论文数量和影响的统计分析工作,每年定期公布中国科技论文发表趋势和状况。国际部分的统计采用国际权威检索数据库《科学引文索引》(SCI)、《工程索引》(Ei)和《科学技术会议录索引》(ISTP)、《医学索引》(MEDLINE)和《社会科学引文索引》(SSCI)。国内部分的统计采用中国科学技术信息研究所1987年建立的《中国科技论文与引文数据库》(CSTPCD),该数据库2009年收录中国1946种中国各学科重要科技期刊,即中国科技论文统计源期刊。本文按我国论文数在世界所处位置及影响、我国国际论文收录数和被引用情况以及分布情况、我国国内论文发表数和被引用情况以及分布情况、中国科技论文的国际合作情况、中国香港特区、中国台湾省以及中国澳门科技论文收录情况、社会科学论文统计情况等部分公布统计结果。2010年,我们继续发布我国表现不俗论文的简要统计结果。     

Association of serum ADMA,SDMA and L-NMMA concentrations with disease progression in COVID-19 patients

IntroductionThis study determines and compares the concentrations of arginine and methylated arginine products ((asymmetric dimethylarginine (ADMA), symmetric dimethylarginine (SDMA), n-monomethyl-1-arginine (L-NMMA) and homoarginine (HA)) for assessment of their association with disease severity in serum samples of COVID-19 patients.Materials and methodsSerum arginine and methylated arginine products of 57 mild-moderate and 29 severe (N = 86) COVID-19 patients and 21 controls were determined by tandem mass spectrometry. Moreover, the concentrations of some of the routine clinical laboratory parameters -neutrophil lymphocyte ratio (NLR), C-reactive protein, ferritin, D-dimer, and fibrinogen measured during COVID-19 follow-up were also taken into consideration and compared with the concentrations of arginine and methylated arginine products.ResultsSerum ADMA, SDMA and L-NMMA were found to be significantly higher in severe COVID-19 patients, than in both mild-moderate patients and the control group (P < 0.001 for each). In addition, multiple logistic regression analysis indicated L-NMMA (cut-off =120 nmol/L OR = 34, 95% confidence interval (CI) = 3.5-302.0, P= 0.002), CRP (cut-off = 32 mg/L, OR = 37, 95% CI = 4.8-287.0, P < 0.001), and NLR (cut-off = 7, OR = 22, 95% CI = 1.4-335.0, P = 0.020) as independent risk factors for identification of severe patients.ConclusionsThe concentration of methylated arginine metabolites are significantly altered in COVID-19 disease. The results of this study indicate a significant correlation between the severity of COVID-19 disease and concentrations of CRP, NLR and L-NMMA.     

全测验与锚测验题型分值比对等值误差的影响

为探讨全测验与锚测验不同的客观题与主观题分值比对等值误差造成的影响,本文设计两种全测验与锚测验题型分值比,以等值标准误为因变量,构建2X2的两因素完全随机化设计进行等值误差的方差分析。结果表明,全测验题型分值比与锚测验题型分值比两因素的主效应显著（P〈0．001）,交互作用显著（P〈0．01）,简单效应检验表明两因素在各水平上差异显著（P〈0．01）。全测验题型分值比与锚测验题型分值比对等值误差产生一定的影响,在等值过程中应该考虑这两个影响因素,为了减小等值过程的误差,锚测验题型分值比应该尽量与全测验题型分值比相一致。     

数学建模课内容和教学方法的探索

数学建模课程的开设以及如何组织教学,如何培训学生参加竞赛一直是近几年来高校的热点。本文根据我们几年来的实践摸索,就数学建模课程的内容设置,以及教学方法、培训方法的经验作一些简单介绍,以期对广大有兴趣的老师和学生有所帮助。     

论传媒教育及其实施策略

传媒教育是一种关涉掌握传媒知识、获取传媒技能、提升传媒素养的活动,传媒素养的提高是传媒教育的核心目的和最终结果。作为一种通识的素养教育,各级学校实施切实有效的传媒教育是必需的,但实践中,在具体操作和思想认同等方面仍存在问题。需着力进行传媒教育的社会组织建设;根据不同教育发展水平选择不同的传媒教育课程模式:或独立设置课程,或将传媒内容渗透于其他课程;多途径培养和提高传媒教育的师资水平;创新传媒教育的教学方法。     

高校素质教育要紧扣专业特点--论财经政法类大学生规则意识与权利意识的培育

以人为本,体现个性化、人性化是高校素质教育的目标。财经政法院校所实施的素质教育应该紧扣专业特点,体现专业思想、精神及其要求,以规则意识与权利意识的培育为切入点,通过更新观念和提高制度设计意识、强化教育教学的主渠道作用以及开拓多种形式的课外实践等途径,强化财经政法类大学生的权利意识和规则意识的培育。     

The Future of Educational Neuroscience

The primary goal of the emerging field of educational neuroscience and the broader movement called Mind, Brain, and Education is to join biology with cognitive science, development, and education so that education can be grounded more solidly in research on learning and teaching. To avoid misdirection, the growing worldwide movement needs to avoid the many myths and distortions in popular conceptions of brain and genetics. It should instead focus on integrating research with practice to create useful evidence that illuminates the brain and genetic bases as well as social and cultural influences on learning and teaching. Scientists and educators need to collaborate to build a strong research foundation for analyzing the “black box” of biological and cognitive processes that underpin learning.