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2,661 results on '"Li, Mengyao"'

63. A comparative study of long-time series of global-scale albedo products

Author

Li Mengyao, Liu Qiang, and Qu Ying

Subjects
albedo, remote sensing, assessment, spatio-temporal variation, Mathematical geography. Cartography, GA1-1776
Abstract

Albedo is a key variable in the study of global or regional earth system models. High-quality albedo products are helpful for the accurate analysis and prediction of the Earth’s environment and climate. This paper analyzes the similarities and differences in several global-scale albedo products. The conclusions are as follows: (1) Ignoring the downward radiation weight leads to a maximum deviation of ±0.2 in the mean albedo in space and time; (2) Most of the products have good consistency at the global scale, especially after 2000, the consistency in the middle latitudes is better than that in the low latitudes and high latitudes; (3) Although there are obvious inter-annual variations and zonal differences in global mean albedo data from 2000 to 2020, the overall trend is not significant. The complex spatio-temporal variation of albedo requires high-quality remote sensing products to characterize its details. However, existing datasets do not show good agreement in these details, and more efforts are needed in this area.

Published
2023
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73. Promoting Academic Self-Efficacy, Positive Relationships, and Psychological Resilience for Chinese University Students' Life Satisfaction

Author

Mao, Yanhui, Xie, Mei, Li, Mengyao, Gu, Chenxi, Chen, Yiping, Zhang, Zhenyu, and Peng, Chuanyu

Abstract

The current study, based on the PERMA model, proposed and examined a hypothetical model exploring the effects of academic self-efficacy, positive relationships, and psychological resilience on university students' life satisfaction. We collected data from a large sample of 1,089 university students in southwest China. The participants completed a battery of self-report questionnaire items measuring academic self-efficacy, positive relationships, psychological resilience, and life satisfaction. The results of the structural equation modeling analysis demonstrated a good fit for our data, suggesting that academic self-efficacy positively predicted university students' life satisfaction through two independent mediators: positive relationships and psychological resilience. Findings yielded from the empirically validated hypothetical model add value to and enrich the PERMA model within a group of Chinese university students. The implications and practical suggestions for improving university students' life satisfaction are discussed in light of these findings.

Published
2023
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98. An investigation of the formation process of Chinese high school students' science career intentions

Author

Li, Mengyao and Airey, Jeremy

Abstract

High school students' lack of science career intentions has attracted the attention of stakeholders and researchers in many fields. Studies relevant to the formation of science career perceptions and the development of science careers have played crucial roles in the science education research field. The current study draws on two widely applied theories in investigating students' science career intentions: social cognitive career theory (SCCT) and science capital theory. The study employs quantitative- dominant mixed methods, including structural equation modelling and case studies. Through the construction of models, this study demonstrates the processes by which Chinese high school students (age 16-18) form their science career intentions. These formation processes consist of a set of interactions between contextual factors (family science capital) and personal cognitive factors (e. g. self-efficacy, interest). This study provides evidence of the applicability of both science capital theory and SCCT in the Chinese context. In addition, at the theoretical level, the current study complements science capital theory and SCCT. It reveals that aspects of personal agency, for example self-efficacy, can mediate the relation between students' family science capital and their science career intentions. Science capital theory posits an indirect relationship between family science capital and science career intentions; the current study's findings complement this observation and strengthen its explanation. For SCCT, the present study investigates the disputed questions from previous literature about some key variables: self-efficacy, interest, and learning experiences; and it refines the understanding of these variables. This study offers insights to help understand the formation processes of Chinese high school students' science career intentions. The study thereby contributes to the development and refinement of relevant theories, and it also provides applied implications for educational policy and future studies.

Published
2022

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