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61.
In this article we introduce the notion of I-acceleration convergence of sequences. We prove the decomposition theorem for I-acceleration convergence of sequences as well as for subsequence transformations. We study different properties of I-acceleration convergence of sequences. 相似文献
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Henry Nsubuga Kiwanuka Jan Van Damme Wim Van Den Noortgate Dickson Nkafu Anumendem Gudrun Vanlaar Chandra Reynolds 《School Effectiveness & School Improvement》2017,28(1):1-21
This study investigated the effects of student and classroom characteristics on math self-confidence, perceived usefulness, and enjoyment of mathematics as multiple outcomes. A sample of 7th-grade students from 78 classes of 49 schools was studied. The data were collected using, among other instruments, an attitude questionnaire. The results of the multivariate multilevel analysis showed that the variance of the 3 indicators was situated mostly at the student level, and that the indicators correlated strongly at the class level. Higher prior mathematics achievement and positive parental beliefs and attitudes were significant predictors of higher scores across the 3 indicators. Each of the baseline indicators was significantly associated with its corresponding final indicator. At the classroom level, classroom assessment was significantly associated with less endorsement of all 3 indicators, higher levels of classroom modeling with greater endorsement of perceived usefulness of mathematics, and classroom questioning with greater enjoyment of mathematics. 相似文献
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Peer group contexts of girls' and boys' academic experiences 总被引：1，自引：0，他引：1
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AbstractThe current study focuses on the calculation and word problem-solving skill profiles at the end of middle school and their relationships to previous skills and interest in math. The sample included 818 (48% boys) Estonian students from 31 schools. Math skills, reasoning, text comprehension, and interest in math were assessed in Grade 8. Latent profile analysis was used to identify latent profiles of calculation and word problem-solving skills in Grade 9 (age 15 years). Five latent profiles were found. Results indicated that students had significantly different math and cognitive skills; however, the interest level for average and lower-achieving students was quite similar. Students with the highest skills had an exceptionally high interest in math, showing that enhancing students’ interest together with academic skills might help to reach a high level of math skills by the end of middle school. 相似文献
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In this part of the article, various experimental techniques for investigating materials under high pressure are discussed.
The effect of pressure on the behaviour of materials is discussed with suitable examples.
P Ch Sahu (left) is at the Materials Science Division of Indira Gandhi Centre for Atomic Research, Kalpakkam. He is a specialist
in the field of high pressure science and is presently heading this activity at his institute.
N V Chandra Shekar (right) is a Senior Scientist at the Materials Science Division of Indira Gandhi Centre for Atomic Research,
Kalpakkam. His primary research areas are in high pressure phase transitions and in synthesis and study of novel materials
under extreme pressure and temperature conditions. 相似文献
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