生死相拥5000年     

贾庆文 《海外英语》2007,(4):46-47

[1](路透社)意大利瓦尔达罗电——意大利将不会分离它石器时代的“情侣”。[2]科学家说他们决定把这对相拥5000年之久的情侣遗体整体移动并保存,作为献给全国的情人节礼物,在他们永远拥抱的姿势中,他们的胳膊仍然相互缠绕在一起。  相似文献   

Description of an instrument for registering changes of temperature     

Balfour Stewart 《Journal of The Franklin Institute》1857,64(4):281-283

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新一代流行乐之王     

Jenny  Eliscu  阿萌 《海外英语》2004,(2):10

At the Butcher Shop, a steakhouse in downtown Memphis, a banquet-size table is crowded with people who are all somehow asso-ciated with Justin Timberlake: his mother and stepfather, Lynn and Paul Harless (who co-manage his career), his best friend's girlfriend, his publicist, some family friends, business asso-ciates, me. We pass our time laughing and drinking wine and eating filet (鱼片) mignon and twice-baked potatoes, but we're really just waiting  相似文献   

Phosphate loading and the effects on VO2max in trained cyclists     

I Stewart  L McNaughton  P Davies  S Tristram 《Research quarterly for exercise and sport》1990,61(1):80-84

It is known that an increased level of red blood cell 2,3-diphosphoglycerate (DPG) shifts the oxyhemoglobin dissociation curve to the right, thus allowing a greater unloading of oxygen at the tissue level. It has been hypothesized that phosphate might help increase VO2max by increasing 2,3-DPG level. Eight trained cyclists underwent three cycle ergometer tests (control, placebo, and experimental) to determine whether phosphate ingestion had any positive effect on VO2max, time to exhaustion, serum 2,3-DPG, and serum phosphate levels. We found no change between the control, placebo, or experimental conditions in pretest serum phosphate levels, but we did find increases in 2,3-DPG levels in the phosphate condition (p less than .05), which suggests that even a small amount of phosphate could increase levels of 2,3-DPG. We also found significant differences in VO2max between the control (p less than .05) and placebo (p less than .02) conditions and also in time to exhaustion between the three conditions (p less than .05). We suggest that phosphate may have an ergogenic effect, but clearly more work needs to be undertaken to ascertain the amount of phosphate required and the magnitude of the effect.  相似文献   

Audio-visual     

Margaret C. Stewart 《Health information and libraries journal》1990,7(4):227-232

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Audio-visual     

Margaret C. Stewart 《Health information and libraries journal》1989,6(2):100-101

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爱:最神奇的力量     

Jenny 《初中生》2015,(24)

一位大学教授在他的社会学课堂上,让他的学生去巴尔迪摩贫民窟找到两百个男孩的记录,并且要对每个男孩的未来做出评估.学生们给每个孩子的评价都是:“这辈子根本没有机会翻身了.”二十五年后,另外一个社会学教授发现了这个早期做过的社会调查.于是他让自己的学生继续探究这个课题,看看当初那些小男孩现在到底怎么样了.  相似文献   

Using methodological triangulation to examine the effectiveness of a mentoring program for online instructors     

Michelle Drouin  Jennifer Stewart  Karen Van Gorder 《Distance Education》2015,36(3):400-418

In this quasi-experimental mixed methods study, we examined the effectiveness of a faculty-to-faculty mentoring program to increase student success rates in online courses at an American university. Over one semester, 24 faculty mentees worked with 6 faculty mentors on improving course organization and implementing student engagement techniques. Using methodological triangulation, we found positive results for two of our effectiveness measures (i.e., mentor and mentee feedback and mentors’ ratings of mentees’ courses). However, in terms of our third measure (i.e., student learning data), although institutional data showed that there was a 4.1% aggregate increase in online student success after the intervention, the intervention group made no significantly greater gains than two control groups. Our findings highlight some benefits and shortcomings of these types of university initiatives and also emphasize the importance of using triangulation to integrate participant feedback with formal measures of student success.  相似文献   

Ten Salient Practices of Undergraduate Research Mentors: A Review of the Literature     

Jenny Olin Shanahan  Elizabeth Ackley-Holbrook  Eric Hall  Kearsley Stewart  Helen Walkington 《Mentoring & Tutoring: Partnership in Learning》2015,23(5):359-376

This paper identifies salient practices of faculty mentors of undergraduate research (UR) as indicated in the extensive literature of the past two decades on UR. The well-established benefits for students involved in UR are dependent, first and foremost, on high-quality mentoring. Mentorship is a defining feature of UR. As more and different types of colleges and universities strive to meet student demand for authentic scholarly experiences, it is imperative to identify what effective UR mentors do in order to ensure student engagement, quality enhancement, retention, and degree-completion. We offer an original analysis of the literature on UR mentoring in which we identify 10 significant “lessons learned,” or evidence-based practices of effective UR mentors that apply broadly across disciplines, students, institutions, and mentoring approaches.  相似文献   

How students reason about matter flows and accumulations in complex biological phenomena: An emerging learning progression for mass balance     

Emily E. Scott  Jack Cerchiara  Jenny L. McFarland  Mary Pat Wenderoth  Jennifer H. Doherty 《科学教学研究杂志》2023,60(1):63-99

In recent years, there has been a strong push to transform STEM education at K-12 and collegiate levels to help students learn to think like scientists. One aspect of this transformation involves redesigning instruction and curricula around fundamental scientific ideas that serve as conceptual scaffolds students can use to build cohesive knowledge structures. In this study, we investigated how students use mass balance reasoning as a conceptual scaffold to gain a deeper understanding of how matter moves through biological systems. Our aim was to lay the groundwork for a mass balance learning progression in physiology. We drew on a general models framework from biology and a covariational reasoning framework from math education to interpret students' mass balance ideas. We used a constant comparative method to identify students' reasoning patterns from 73 interviews conducted with undergraduate biology students. We helped validate the reasoning patterns identified with >8000 written responses collected from students at multiple institutions. From our analyses, we identified two related progress variables that describe key elements of students' performances: the first describes how students identify and use matter flows in biology phenomena; the second characterizes how students use net rate-of-change to predict how matter accumulates in, or disperses from, a compartment. We also present a case study of how we used our emerging mass balance learning progression to inform instructional practices to support students' mass balance reasoning. Our progress variables describe one way students engage in three dimensional learning by showing how student performances associated with the practice of mathematical thinking reveal their understanding of the core concept of matter flows as governed by the crosscutting concept of matter conservation. Though our work is situated in physiology, it extends previous work in climate change education and is applicable to other scientific fields, such as physics, engineering, and geochemistry.  相似文献