排序方式： 共有36条查询结果，搜索用时 31 毫秒
21.
Kwon Kyong-Ah Jeon Shinyoung Castle Sherri Ford Timothy G. 《Early Childhood Education Journal》2022,50(7):1221-1232
Early Childhood Education Journal - Using the nationally representative Head Start Family and Child Experiences Survey 2014 (FACES 2014), this study examined the associations... 相似文献
22.
The transition phase of a golf swing is considered to be a decisive instant required for a powerful swing. However, at the same time, the low back torsional loads during this phase can have a considerable effect on golf-related low back pain (LBP). Previous efforts to quantify the transition phase were hampered by problems with accuracy due to methodological limitations. In this study, vector-coding technique (VCT) method was proposed as a comprehensive methodology to quantify the precise transition phase and examine low back torsional load. Towards this end, transition phases were assessed using three different methods (VCT, lead hand speed and X-factor stretch) and compared; then, low back torsional load during the transition phase was examined. As a result, the importance of accurate transition phase quantification has been documented. The largest torsional loads were observed in healthy professional golfers (10.23 ± 1.69 N · kg?1), followed by professional golfers with a history of LBP (7.93 ± 1.79 N · kg?1), healthy amateur golfers (1.79 ± 1.05 N · kg?1) and amateur golfers with a history of LBP (0.99 ± 0.87 N · kg?1), which order was equal to that of the transition phase magnitudes of each group. These results indicate the relationship between the transition phase and LBP history and the dependency of the torsional load magnitude on the transition phase. 相似文献
23.
Min-Jeong Jeon Guemin Lee Jeong-Won Hwang Sang-Jin Kang 《Asia Pacific Education Review》2009,10(2):149-158
The purpose of this study was to investigate the methods of estimating the reliability of school-level scores using generalizability
theory and multilevel models. Two approaches, ‘student within schools’ and ‘students within schools and subject areas,’ were
conceptualized and implemented in this study. Four methods resulting from the combination of these two approaches with generalizability
theory and multilevel models were compared for both balanced and unbalanced data. The generalizability theory and multilevel
models for the ‘students within schools’ approach produced the same variance components and reliability estimates for the
balanced data, while failing to do so for the unbalanced data. The different results from the two models can be explained
by the fact that they administer different procedures in estimating the variance components used, in turn, to estimate reliability.
Among the estimation methods investigated in this study, the generalizability theory model with the ‘students nested within
schools crossed with subject areas’ design produced the lowest reliability estimates. Fully nested designs such as (students:schools)
or (subject areas:students:schools) would not have any significant impact on reliability estimates of school-level scores.
Both methods provide very similar reliability estimates of school-level scores. 相似文献
24.
Hyun-Joo Jeon Kyong-Ah Kwon Bridget Walsh Melissa M. Burnham Yun-Jung Choi 《Early education and development》2019,30(1):131-144
Research Findings: This study used teacher questionnaires to investigate the relationships of early childhood education teachers’ depressive symptoms, professional motivation, and job-related stress to their beliefs about children and teaching practices. Teachers (N = 207) were recruited from early childhood education programs in the southern United States. Path analyses showed that teachers who exhibited fewer depressive symptoms were more likely to have a career orientation to their jobs and indicated feeling less job-related stress. Teachers with a career orientation to their jobs were also more likely to have child-centered beliefs and endorse developmentally appropriate teaching practices. Teachers’ job-related stress, however, was not related to beliefs about children or teaching practices. Practice or Policy: These results suggest that teachers’ psychological and job-related well-being are linked to their beliefs about children and teaching practice in early childhood education. It is therefore important to provide support systems and preventive programs for teachers to enhance their well-being. 相似文献
25.
Wim J. van der Linden Minjeong Jeon Steve Ferrara 《Journal of Educational Measurement》2011,48(4):380-398
According to a popular belief, test takers should trust their initial instinct and retain their initial responses when they have the opportunity to review test items. More than 80 years of empirical research on item review, however, has contradicted this belief and shown minor but consistently positive score gains for test takers who changed answers they found to be incorrect during review. This study reanalyzed the problem of the benefits of answer changes using item response theory modeling of the probability of an answer change as a function of the test taker’s ability level and the properties of items. Our empirical results support the popular belief and reveal substantial losses due to changing initial responses for all ability levels. Both the contradiction of the earlier research and support of the popular belief are explained as a manifestation of Simpson’s paradox in statistics. 相似文献
26.
Arthur C. Graesser Jennifer Wiley Susan R. Goldman Tenaha O’Reilly Moongee Jeon Bethany McDaniel 《Metacognition and Learning》2007,2(2-3):89-105
We investigated the impact of a Web tutor on college students’ critical stance and learning while exploring Web pages on science.
Critical stance is an aspect of self-regulated learning that emphasizes the need to evaluate the truth and relevance of information
as the learner engages in systematic inquiry to answer challenging questions. The Web tutor is called SEEK, an acronym for
Source, Evidence, Explanation, and Knowledge. The SEEK Tutor was designed to promote a critical stance through several facilities
in a computer environment: spoken hints on a mock Google™ search page, on-line ratings on the reliability of particular Web
sites, and a structured note-taking facility that prompted them to reflect on the quality of particular Web sites. We conducted
two experiments that trained students how to take a critical stance and that tracked their behavior while exploring Web pages
on plate tectonics to research the causes of the volcanic eruption of Mt. St. Helens. The SEEK Tutor did improve critical
stance, as manifested in essays on the causes of the volcanic eruption, and did yield learning gains for some categories of
information (compared with comparison conditions). However, many measures were unaffected by either the presence of the SEEK
Tutor or by prior training on critical stance. We anticipate that robust improvements on critical stance and learning will
require more training and/or some expert feedback and interactive scaffolding of critical stance in the context of specific
examples.
This work was conducted while Tenaha O’Reilly was a postdoctoral fellow at the University of Memphis. 相似文献
27.
Sarah N. Lang Sarah J. Schoppe-Sullivan Lieny Jeon 《Early education and development》2017,28(1):96-114
By adapting a self-administered assessment of coparenting, we sought to provide a new tool, the Cocaring Relationship Questionnaire, to measure parent-teacher, or cocaring relationships, and provide additional construct validity for the multidimensional concept of cocaring. Next, recognizing the importance of parental involvement for young children’s development, we examined the associations between dimensions of cocaring and aspects of parental involvement. We investigated the parent-teacher relationships of 90 families utilizing full-time, center-based childcare for their 12–36 month old children. Parents and teachers completed a set of questionnaires. Research findings: exploratory factor analysis revealed a four factor structure for the cocaring relationship: Support, Undermining, Endorsement, and Agreement. After controlling for a number of child- and parent-level covariates, parents’ perceptions of different dimensions within the cocaring relationship were associated with different aspects of their self-reported and teacher-reported involvement. Most notably, parents’ perception of cocaring support was positively associated with three different forms of parental involvement. Practice or Policy: the Cocaring Relationship Questionnaire offers researchers and practitioners a means to assess multiple dimensions within parent-teacher relationships. Understanding that parent-teacher relationships are multifaceted can help practitioners consider their interactions with families in new ways, which may influence, or be influenced by, parental involvement. 相似文献
28.
SHIN Bong-cheol KIM Gun-hee CHOI Jin-hwa JEON Byung-cheol LEE Honghee CHO Myeong-woo HAN Jin-yong PARK Dong-sam 《浙江大学学报(A卷英文版)》2006,7(9):1467-1473
INTRODUCTION Recently, the application of the information technology into manufacturing fields gets more and more importance on the whole manufacturing shop floors. Currently, many researches reflect the effec- tiveness of knowledge-based production system re- lated to the exchange and management of various manufacturing information using information tech- nology via the Internet in order to increase the com- petitive power of industries. This research suggests a Web-based machining proce… 相似文献
29.
Hemanth Tumkur Lakshmikantha Naresh Kumar Ravichandran Mansik Jeon Jeehyun Kim Hyo-sang Park 《Journal of Zhejiang University. Science. B》2018,19(11):818-828
Objectives
The study was done to evaluate the efficacy of optical coherence tomography (OCT), to detect and analyze the microdamage occurring around the microimplant immediately following its placement, and to compare the findings with micro-computed tomography (μCT) images of the samples to validate the result of the present study.Methods
Microimplants were inserted into bovine bone samples. Images of the samples were obtained using OCT and μCT. Visual comparisons of the images were made to evaluate whether anatomical details and microdamage induced by microimplant insertion were accurately revealed by OCT.Results
The surface of the cortical bone with its anatomical variations is visualized on the OCT images. Microdamage occurring on the surface of the cortical bone around the microimplant can be appreciated in OCT images. The resulting OCT images were compared with the μCT images. A high correlation regarding the visualization of individual microcracks was observed. The depth penetration of OCT is limited when compared to μCT.Conclusions
OCT in the present study was able to generate high-resolution images of the microdamage occurring around the microimplant. Image quality at the surface of the cortical bone is above par when compared with μCT imaging, because of the inherent high contrast and high-resolution quality of OCT systems. Improvements in the imaging depth and development of intraoral sensors are vital for developing a real-time imaging system and integrating the system into orthodontic practice.30.
Research Findings: Early childhood teachers’ psychological well-being influences the nurturing and learning classroom climate in early care and education as well as children’s development. However, less is known about predictors of teachers’ psychological well-being in preschool. The purpose of this study was to explore associations between potential predictors of teachers’ psychological well-being—such as professional background, teaching efficacy, and work environment—and teachers’ self-perceived depression, stress, and emotional exhaustion after controlling for individual demographics. A total of 1,129 teachers serving preschool-age children (3- and 4-year-olds) in the United States participated in the study. Teachers responded to a questionnaire asking about their background, work environment, and social-emotional attributes. Multiple regression analysis revealed that levels of teachers’ self-efficacy and work environments are generally associated with their psychological well-being above and beyond their personal and professional backgrounds. Practice or Policy: The results of this study suggest that it is important to help teachers build teaching competence and efficacy and to prepare them to handle stressors from work environments in order to reduce their psychological burden. In addition, we suggest that positive work climates need to be created for teachers and children at the program level. 相似文献