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1.
Logical connectives are words or phrases which serve as links between sentences, or between propositions within a sentence,
or between a proposition and a concept. The Logical Connectives in Science Project has identified about 200 such terms commonly
use in school science text material, and has prepared over a thousand test items in order to measure secondary school students’
comprehension of these terms. The primary aim of the research is to identify students’ specific difficulties; a secondary
aim is to explore the relationships between students’ ability to comprehend logical connectives and other variables of interest
to educational researchers.
The research is still in progress; the present paper reports on recent work in four areas: (1) early findings on pupils’ difficulties
with logical connectives, based on data obtained from the trial testing of the items; (2) the relationship between logical
connective ability (LCA) and socio-economic status (SES); (3) the relationship between LCA and cognitive preferences; and
(4) the relationship between LCA and attitudes to a textbook (PSSC Physics) which makes extensive use of a wide range of logical
connectives. Significant correlations were found between LCA and SES; however, LCA was found to be uncorrelated with either
cognitive preferences or with attitudes to the PSSC text. 相似文献
2.
M. Ikhwan Maulana Haeruddin David Pick Htwe Htwe Thein 《Higher Education Quarterly》2020,74(3):257-272
The aim of this study is to explore women academic's identity work in the context of the Global South (Indonesia). This is done by examining how the interplay between macro‐level social, cultural and political influences and micro‐processes produce moments of compliance and resistance. To this end, the following research question is posed: What is the nature of identity work among women academics in higher education institutions of the Global South where there are shifting and conflicting social and cultural conditions? This study contributes by illuminating the ways in which women comply with or resist traditional and contemporary organisational and occupational structures that produce gender inequality. It also contributes to understanding how the interplay of power and resistance influences women's academic identity work in developing nations. 相似文献
3.
应用主动轮廓模型在单摄像机监控系统中的运动目标检测与跟踪 总被引：1，自引：1，他引：0
介绍在实时图像处理中的单摄像机监控系统运动目标检测与跟踪方法.针对运动目标的检测,首先进行帧间图像的匹配,接着计算图像间的误差,检测出运动区域,得到运动物体的大致轮廓.通过利用动态规划法改进的主动轮廓模型方法,提取运动目标轮廓.算法有较好的鲁棒性和抗噪声能力,速度也比较快.这种方法可以在轮渡站实时监控系统中得到应用. 相似文献
4.
通过第3代谱数值波浪模型(Simulating Wave Nearshore, SWAN)预测和估计波浪特性.数值模拟选取2个区域,首先计算85°E ~100°E, 8°N~22°N的大区域,网格数181×169,精度为0.05′×0.05′,然后计算94°E ~98°E, 15°N~18°N的小区域,网格数为49×37,精度为0.05′×0.05′,后者嵌套在前者中.仰光港作为缅甸主要的贸易中心,位于嵌套区域.大区域的SWAN运行结果为小区域计算提供边界条件. 相似文献
5.
6.
Assessing the Correlates of Over- and Underrating of Academic Competence: A Conceptual Clarification and a Methodological Proposal 总被引：1，自引：0，他引：1
Avi Assor Joseph Tzelgov Roman Thein Barbara C. Ilardi James P. Connell 《Child development》1990,61(6):2085-2097
The present article addresses 3 issues pertaining to the conceptualization and assessment of the effects of over- and underrating academic competence. First, it is shown that it is impossible to separate the effects of over- and underrating from the effects of both perceived and actual competence. Second, it is shown that the method used by Connell and Ilardi in a previous article to assess the effect of net overversus underrating is of questionable validity. Finally, a new definition and method for assessing the effects of over- and underrating is presented. The new method was applied to Connell and Ilardi's data to retest the hypothesis that overrating is associated with more problematic psychological profiles than accuracy and underrating. Results did not generally support the hypothesis, but did show that the correlates of over- and underrating vary as a function of both extremity of over- or underrating and the level of children's actual competence. 相似文献
7.
Myint?Swe?Khine Barry?J.?FraserEmail author Ernest?Afari Zeya?Oo Thein?Thein?Kyaw 《Learning Environments Research》2018,21(1):135-152
We investigated students’ perceptions of their science classroom environments with the use of the What Is Happening In this Class? (WIHIC) questionnaire at the university level in Myanmar. The translated questionnaire was administered to 251 students in first-year science classes at a university. Both exploratory factor analysis and confirmatory factor analysis supported the reliability and factorial validity of the Myanmar version of the WIHIC. The constructs of the WIHIC were significantly correlated, but gender differences were not detected in correlations between WIHIC scales. Future research is needed to see if our Myanmar version of the WIHIC fits other samples in schools and universities in this context. It is also suggested that future studies include measures of student attitudes and academic achievement to permit investigation of associations between the learning environment and student outcomes in this country. 相似文献
8.
螺旋桨叶梢与船体表面的间隙大小对船体诱导激振力的影响试验 总被引：2，自引：0，他引：2
以一条集装箱船舶螺旋桨为例,对其3个不同叶梢间隙比情况,即gt=0.25,gt=0.35和gt=0.45,在相同的工况条件下,进行空泡水筒模拟不均匀流场中螺旋桨模型的脉动压力测量.试验结果分析指出,在某一范围内,如gt=0.25~0.35时,增大叶梢间隙比不一定具有减小螺旋桨空泡在船体表面诱导脉动压力的作用,而在gt=0.35~0.45时,则具有较明显降压效果. 相似文献
9.
Marcia S. Marx Pamela Hubbard Jiska Cohen-Mansfield Maha Dakheel-Ali Khin Thein 《Educational gerontology》2013,39(4):263-271
ABSTRACT The impact of traditional activities (e.g., playing board games) were compared with community-service activities (e.g., making first aid kits for a homeless shelter) during a monthly intergenerational visiting program. The participating seniors (n = 19) gave high ratings to both types of activities. However, they felt that they had helped others more during the community-service activities, and they expressed greater interest in community-service activities for future intergenerational visits. Intergenerational programs should be supported by the public as well as by funding agencies, as these have great potential for benefiting not only the participants but also others in the community. 相似文献
10.
图像处理与神经网络识别技术在船舶分类中的应用 总被引：1，自引：1，他引：0
应用图像处理和神经网络技术,提出一种基于静态照片对船舶进行分类的方法.首先通过图像处理技术对照片提取特征,然后将这些特征作为多层前向神经网络的输入,该神经网络用BP算法(反向传播算法)来进行,由该神经网络将照片中的船只分为大型船、中型船、小型船等3类.用真实的船的尺寸作实验,实验结果证明了该方法的有效性.另外,提出一种识别船舶类型的方法,用户可以通过GUI进行模拟实验.最后,讨论海上值班系统的研究现状.研究的目的是将图像处理技术集成到传统的船舶导航设备中. 相似文献