Special relativity — An exoteric narrative     

S. R. Madhu Rao 《Resonance》1998,3(5):63-72

Some time earlier¹ we treated our readers to an exoteric narrative of special relativity’s kinematics in which we shunned the use of mathematical formulas. However, the simple and concise account presented then has left quite a few questions open, and we now present the promised sequel to supply the requisite answers.  相似文献   

175 years of linear programming     

Vijay Chandru  M. R. Rao 《Resonance》1999,4(7):4-13

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The context dependence of physics identity: Examining the role of performance/competence,recognition, interest,and sense of belonging for lower and upper female physics undergraduates     

Zahra Hazari  Deepa Chari  Geoff Potvin  Eric Brewe 《科学教学研究杂志》2020,57(10):1583-1607

While there is a growing body of work that examines disciplinary identity development, unlike qualitative work in this area, quantitative research has not fully incorporated the importance of different contexts, nor has it uniquely focused on underrepresented groups (in this case, women in physics). This study examines how the constructs posited by prior work as important for physics identity, as well as an additional theorized construct, may interrelate and affect female students' physics identity differently depending on the context. Context in this study refers to two different experiential levels in college. The constructs examined include performance/competence, recognition, and interest, as well as sense of belonging. In particular, we used structural equation modeling to examine the effect that these constructs have on the physics identity of two groups of female physics undergraduates: first year students and senior year students. The results reveal that the relationship of the theorized constructs with physics identity vary between the two groups as well as compared to prior research with broad college student populations (not just physics majors). Unlike broad college student populations, for our sample of female physics undergraduates, interest did not have a direct effect on physics identity while sense of belonging was significant only for senior year students. These results exemplify the importance of examining context or different types of student experiences when studying disciplinary identity development rather than generalizing previous frameworks to all contexts.  相似文献   

中小企业业务流程再造系统动力模型研究     

饶曦 《中国科技信息》2010,(21)

在企业业务流程再造的过程中,虽然不少企业取得了高额回报,但仍有高达70%的再造项目未能取得预期的回报。选择恰当的时机进行再造是再造成功的关键因素之一,本文在建立中小企业业务流程再造系统动力综合评价指标体系的基础上,构造了中小企业业务流程再造系统动力综合评估的数学模型。  相似文献   

《电路分析与应用》课程教学改革的思路与实施   总被引：3，自引：0，他引：3  

饶蜀华  梁颖  邹涯梅  胡海华 《成都航空职业技术学院学报》2009,25(4):41-43

基于电子信息工程技术专业人才培养目标,结合职业岗位能力要求,本文对"电路分析与应用"课程的教学内容、教学方法与手段的改革进行了探讨,为电子信息工程技术重点专业的改革和建设提供了支撑.  相似文献   

Chemistry of materials     

C. N. R. Rao 《Resonance》2009,14(5):508-517

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大学对区域经济发展的贡献——以加拿大大西洋省区为例     

饶燕婷 《现代教育论丛》2010,(1):30-35

加拿大大西洋省区在历史上是加拿大较为贫困的地区,当地大学通过为地区经济发展提供人才支持和技术支持,并通过各种消费和购买活动推动了地区经济的发展和产业结构的升级,使该地区在较短时间内弥合了与其他经济发达地区的差距。其成功经验在于政府政策的支持、整体的高等教育战略,以及大学与政府和产业界的紧密合作。  相似文献   

青少年网络成瘾、网络偏差行为与一般问题行为的关系     

王莉  邹泓  任磊  么娆 《中国特殊教育》2010,(8)

以北京市370名中学生为被试,采用网络成瘾问卷、网络偏差行为问卷、一般问题行为问卷考查了青少年网络成瘾与网络偏差行为的关系,并探讨了两者对一般问题行为的影响。结果表明：（1）网络成瘾、网络偏差行为存在显著的性别差异,男生得分均显著高于女生;网络偏差行为存在显著的年级差异,初一学生的网络偏差行为最多;（2）网络偏差行为与网络成瘾呈显著正相关;（3）网络成瘾者比非成瘾者表现出更多的一般问题行为;（4）网络偏差行为在网络成瘾与一般问题行为的关系中起到完全中介作用。  相似文献   

Anhydrobiosis     

T. Ramakrishna Rao 《Resonance》2018,23(5):545-553

In aquatic and moist soil environments subjected to periodic drying, a diverse group of organisms (mostly microscopic) have evolved extreme desiccation tolerance through a physiological adaptation called ‘anhydrobiosis’. Notable among such organisms are tardigrades, bdelloid rotifers, and nematodes. Anhydrobiosis also allows these organisms to tolerate extreme temperatures and ionizing radiation. In this article, the signi-cance and some mechanisms of anhydrobiosis are described.  相似文献   

Trophic Cascades     

T Ramakrishna Rao 《Resonance》2018,23(11):1205-1213

In many ecosystems, apex consumers (top predators) play a crucial role in food web dynamics. Their top-down impacts are known to spread downwards through the food webs in a cascading fashion. Trophic cascades manifest when top predators are excluded from an ecosystem or introduced into a system lacking them. Two such case studies are described here. Trophic cascades are generally more pronounced in the aquatic than in the terrestrial ecosystems, which in turn is related to the differences in the average body sizes of herbivores relative to the plant resources they feed upon and in the structure of their food webs. Scientists express concern that human activities have been leading to planet-wide trophic downgrading (loss of apex consumers) which could affect vital ecological processes of the biosphere.  相似文献