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91.
In the structural design of tall buildings, peak factors have been widely used to predict mean extreme responses of tall buildings
under wind excitations. Vanmarcke’s peak factor is directly related to an explicit measure of structural reliability against
a Gaussian response process. We review the use of this factor for time-variant reliability design by comparing it to the conventional
Davenport’s peak factor. Based on the asymptotic theory of statistical extremes, a new closed-form peak factor, the so-called
Gamma peak factor, can be obtained for a non-Gaussian resultant response characterized by a Rayleigh distribution process.
Using the Gamma peak factor, a combined peak factor method was developed for predicting the expected maximum resultant responses
of a building undergoing lateral-torsional vibration. The effects of the standard deviation ratio of two sway components and
the inter-component correlation on the evaluation of peak resultant response were also investigated. Utilizing wind tunnel
data derived from synchronous multi-pressure measurements, we carried out a wind-induced time history response analysis of
the Commonwealth Advisory Aeronautical Research Council (CAARC) standard tall building to validate the applicability of the
Gamma peak factor to the prediction of the peak resultant acceleration. Results from the building example indicated that the
use of the Gamma peak factor enables accurate predictions to be made of the mean extreme resultant acceleration responses
for dynamic serviceability performance design of modern tall buildings. 相似文献
92.
This study is to investigate the reflective learning in a group of secondary school students who participated in an educational tour to Liannan, which is located in a rural area in Guangdong Province, Mainland China. The specific aim is to develop a framework to describe the learning in an educational tour. For this purpose, data were collected through students?? reflective writing in daily journals and end-of-trip sharing passages, triangulated with participant observation and interviews. The data analysis involved the use of grounded theory??s constant-comparative technique??an inductive method for generating hypotheses that are grounded in data. During the analysis of the data, the types of student learning which emerged were categorized in a Reflective Learning Taxonomy for an educational tour, comprising seven levels which are developmental in nature. The interpretative framework based on such a taxonomy of reflective learning reveals the rich context of learning in an educational tour and so makes a contribution to research on learning outside the classroom. 相似文献
93.
Educational Research for Policy and Practice - The provision of feedback is widely practised as part of formative assessment. However, studies that examine the impact of feedback are usually from... 相似文献
94.
Research in Science Education - Many researchers have reported that bridging analogies can productively support students’ scientific meaning-making. How this can be understood semiotically... 相似文献
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97.
The importance of autonomy for children's motivation in collectivistic cultures has been debated hotly. With the understanding that autonomy is not equivalent to freedom of choice, 4 studies addressed this debate by investigating how socioemotional relatedness, choice, and autonomy were related to Chinese children's motivation. Study 1 (N = 56, mean age = 10.77 years), Study 2 (N = 58, mean age = 10.59), and Study 3 (N = 48, mean age = 10.53) found consistently that freedom of choice mattered less if children were socioemotionally close to the adults who made choices for them. However, Study 4 (N = 99, mean age = 11.27) showed that autonomy mattered at every level of socioemotional relatedness. These results suggested that socioemotional relatedness might have facilitated internalization and that children who did not have choice might still feel autonomous. 相似文献
98.
Lam Wai Leong Othman Ibrahim Mohammad Dalvi-Esfahani Hamed Shahbazi Mehrbakhsh Nilashi 《Education and Information Technologies》2018,23(6):2477-2498
With numerous benefits of utilising mobile social network sites (SNSs) for learning purposes, limited studies have been conducted to determine the factors that influence the adoption of mobile SNSs in facilitating learning. Accordingly, the main purpose of this study is to explore the determinants of students’ behavioural intention to use mobile SNSs for their pedagogical purposes by utilising an extended version of Technology Acceptance Model. Furthermore, the moderating effect of users’ experience on their behavioural intention was investigated. Using a structured questionnaire, data were collected from 600 students from top-five public universities of Malaysia. The results revealed perceived task-technology fit as the great predictor of users’ intention and perceived usefulness. Although the moderating impact of students’ experience on the model found to be positive, it was not supported in this study. The contributions of this study both to the literature and practice are discussed. 相似文献
99.
In exploring intricate relationships among environmental factors, internal school conditions and contextual variables that facilitate organisational learning, 90% of staff in six Western Australian secondary schools provided data for this exploratory study. Findings from the study not only shed light on the decade-old debate about the basic momentum for organisational change, but they also help rank-order the sources which initiate change. Additional analyses reveal factors from external environmental and internal school conditions that interact in bringing about organisational learning processes and outcomes in different contextual situations. 相似文献
100.