Effects of different exercise intensities with isoenergetic expenditures on C-reactive protein and blood lipid levels

We investigated the effects of different exercise intensities on C-reactive protein (CRP), and whether changes in CRP levels correlated with blood lipid levels. Ten men exercised at 25%, 65%, and 85% of their maximum oxygen consumption rates. Participants' blood was analyzed for CRP and blood lipid levels before and after the exercise sessions. Although there was an intensity effect for postexercise high-density lipoprotein levels, there were no significant differences or correlations for postexercise CRP levels or between CRP and lipid levels across the three exercise intensities. In an acute aerobic bout model with isoenergetic expenditures, CRP was not affected by the exercise intensity. Additionally, changes in blood lipid levels might not have been connected to CIRP levels for physically fit participants.     

Elementary school parent engagement efforts: Relations with educator perceptions and school characteristics

School efforts to engage parents are posited to influence whether and how they are involved in their children's schooling. The authors examined educators' engagement efforts in beginning reading, their subjective evaluations of engagement practices, and beliefs about parent involvement, in two stratified samples of New Zealand elementary school educators. They explored whether educators' ratings supported multidimensional and multitiered theoretical models of engagement. The authors invited responses from elementary principals and teachers, given their different roles in the nested ecology of schools and relationships with parents, and examined associations between pairs of principals and teachers working in the same school. Finally, the authors examined relations among educators' engagement efforts, evaluations of engagement practices, and beliefs about involvement, and school characteristics including community socioeconomic status, size of school population, ethnic composition of school population, community size, and geographic region.     

Drawing Pedagogies in Higher Education: the Learning Impact of a Collaborative Cross‐disciplinary Drawing Course

Drawing is taught in higher education across art and design but also, increasingly, in medical education, with a variety of aims and approaches. It is argued that there is a need, in both these disciplinary domains, to make more explicit the underpinning pedagogical approach to drawing and the impact that different approaches have on learning. The research described in this article focuses on an optional drawing course for undergraduate craft students and medical students. The course is run by the College of Arts and Humanities at a UK university and has a thematic focus on the human body. This qualitative case study sets out, in the context of selected theory about the teaching and learning of drawing, to explore what the learning impact of a particular collaborative model of teaching drawing was on a cross‐disciplinary student group. Findings included, with reference to Riley's framework of drawing pedagogies, that a range of philosophical and pedagogical ideas about drawing were blended from the teaching perspective in a way that enabled students from distinct disciplinary backgrounds to engage and learn. A shift was observed in students’ perceptions of drawing, with both sets of students questioning previously held assumptions about the use and value of drawing within their learning. Life drawing and anatomy laboratory drawing, in particular, provoked deep and challenging reflections about different cultural conceptions of the human body and the practice of collaborative drawing, with dialogic reflection, enabling insights to be developed into different disciplinary epistemologies.     

A digital game-based assessment of middle-school and college students’ choices to seek critical feedback and to revise

A major goal of contemporary education is to teach students how to learn on their own. Assessments have largely lagged behind this goal, because they measure what students have learned and not necessarily their learning processes. This research presents Posterlet, an assessment that collects evidence regarding the strategies that students choose while learning on their own. Posterlet is an educational game-based assessment that measures two design thinking choices: students’ choices to seek critical (ie, negative) feedback and to revise their work while they learn graphic design principles through creating posters. This research also presents an examination of students’ choices to seek feedback and to revise, as well as of students’ learning outcomes based on these choices. This game-based assessment approach is empirically validated with three research studies sampling nearly 300 middle-school and college students who played Posterlet and completed a posttest. Results show that the game helps students learn, as students who play the game before completing the posttest learn more graphic design principles than students who only complete the posttest. Moreover, the choices to seek critical feedback and to revise can predict learning and can be used as valid outcome measures for learning. Findings can be used in developing and evaluating models of instruction and assessment that may help students make informed learning choices. A discussion of present and future trends in theory regarding digital feedback environments is also included.     

First‐year Pre‐service Teachers in Taiwan—Do they enter the teacher program with satisfactory scientific literacy and attitudes toward science?

Scientific literacy and attitudes toward science play an important role in human daily lives. The purpose of this study was to investigate whether first‐year pre‐service teachers in colleges in Taiwan have a satisfactory level of scientific literacy. The domains of scientific literacy selected in this study include: (1) science content; (2) the interaction between science, technology and society (STS); (3) the nature of science; and (4) attitudes toward science. In this study, the instruments used were Chinese translations of the Test of Basic Scientific Literacy (TBSL) and the Test of Science‐related Attitudes. Elementary education majors (n = 141) and science education majors (n = 138) from four teachers’ colleges responded to these instruments. The statistical results from the tests revealed that, in general, the basic scientific literacy of first‐year pre‐service teachers was at a satisfactory level. Of the six scales covered in this study, the pre‐service teachers displayed the highest literacy in health science, STS, and life science. Literacy in the areas of the nature of science and earth science was rated lowest. The results also showed that science education majors scored significantly higher in physical science, life science, nature of science, science content, and the TBSL than elementary science majors. Males performed better than females in earth science, life science, science content, and the TBSL. Next, elementary education majors responded with more “don’t know” responses than science education majors. In general, the pre‐service teachers were moderately positive in terms of attitudes toward science while science education majors had more positive attitudes toward science. There was no significant difference in attitudes between genders. Previous experience in science indicated more positive attitudes toward science. The results from stepwise regression revealed that STS, the nature of science, and attitudes toward science could explain 50.6% and 60.2% variance in science content in elementary education and science education majors, respectively. For science education majors, the first three scales—the nature of science, health science and physical science—determined basic scientific literacy. However, for elementary education majors, the top three factors were physical science, life science and the nature of science. Based on these results, several strategies for developing the professional abilities of science teachers have been recommended for inclusion in pre‐service programs.     

Challenging the Visual Discourse of Reading: or,Do Teen Readers Look Like Google Images?

Popular culture images of reading tend to portray readers as solitary individuals deeply immersed in reading a single text in a quiet, undisturbed spot. Yet, in our documentation of adolescent students reading in Singapore secondary schools, we find that there are many ways and modes of reading, much of which is social in nature. Through the use of comparative, critical visual analysis, this paper expands the understanding of what it means to read and to understand how adolescent readers experience reading in school contexts. Visual images serve to disrupt dominant readings of what counts as reading to elicit new considerations for engaging adolescents in reading.     

科技期刊的营销策略

期刊"营销"除了发行之外,还涵盖策划、经营、售后服务等更丰富的含义.科技期刊必须改变以作者市场为主体的经营理念,借鉴其他行业及国外先进的营销方式,结合本行业实际,认真研究以读者市场为主体的营销策略,从而拓展自己的功能,实现多元化、产业化发展.     

Preparing students for future learning with Teachable Agents

One valuable goal of instructional technologies in K-12 education is to prepare students for future learning. Two classroom studies examined whether Teachable Agents (TA) achieves this goal. TA is an instructional technology that draws on the social metaphor of teaching a computer agent to help students learn. Students teach their agent by creating concept maps. Artificial intelligence enables TA to use the concept maps to answer questions, thereby providing interactivity, a model of thinking, and feedback. Elementary schoolchildren learning science with TA exhibited “added-value” learning that did not adversely affect the “basic-value” they gained from their regular curriculum, despite trade-offs in instructional time. Moreover, TA prepared students to learn new science content from their regular lessons, even when they were no longer using the software.