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2. Age-effects of sport education model on basic psychological needs and intrinsic motivation of adolescent students: A systematic review and meta-analysis.

Author

Dai, Jing, Chen, Jiayong, Huang, Zijing, Chen, Yuhuan, Li, Yezi, Sun, Jian, Li, Duanying, Lu, Min, and Chen, Jiancai

Subjects
INTRINSIC motivation, BASIC needs, ACADEMIC motivation, BASIC education, RANDOM effects model, PSYCHOLOGICAL factors
Abstract

Objective: This study explores the age effects of the sport education model(SEM) on the impact of basic psychological needs (autonomy, competence, relatedness) and intrinsic motivation (interest, enjoyment, satisfaction) among adolescent students. Method: Retrieval of relevant literature from PubMed, Web of Science, Scopus, and China National Knowledge Infrastructure (CNKI). The search period ranged from the starting year to January 7, 2024. Subsequently, literature screening, data extraction, and quality assessment will be conducted, and data analysis will be performed using "Review Manager 5.4" software. Result: Overall, SEM has a positive and statistically significant impact on the basic psychological needs (MD = 0.36,95% CI [0.22, 0.50]) and intrinsic motivation (MD = 0.75, 95% CI [0.58, 0.93]) of adolescent students (P<0.01). Subgroup analysis revealed age effects on the impact of SEM on the basic psychological needs of adolescent students: pre-peak height velocity (PRE-PHV) (MD = 0.39, 95% CI [0.23, 0.56], I2 = 45%, P<0.01), mid-peak height velocity (MID-PHV) (MD = 0.22, 95% CI [0.01, 0.42], I2 = 82%, P<0.05), post-peak height velocity (POST-PHV) (MD = 1.27, 95% CI [0.79, 1.74], I2 = 0%, P<0.01). Similarly, age effects were found for intrinsic motivation: MID-PHV (MD = 0.86, 95% CI [0.62, 1.11], I2 = 68%, P<0.01), POST-PHV (MD = 0.56, 95% CI [0.40, 0.72], I2 = 0%, P<0.01). Conclusion: The SEM is an effective approach to enhancing the basic psychological needs and intrinsic motivation of adolescent students. However, it exhibits age effects among students at different developmental stages. Specifically, in terms of enhancing basic psychological needs, the model has the greatest impact on POST-PHV students, followed by PRE-PHV students, while the improvement effect is relatively lower for MID-PHV students. The enhancement effect on intrinsic motivation diminishes with increasing age. [ABSTRACT FROM AUTHOR]

Published
2024
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5. An improved method for the purification and structural analysis of rubropunctatin from red yeast glutinous rice

Author

Ming Yu Shen, Li Yezi He, Li Xu, Tang Sui, Dong Mei Wei, Chuan Cao, Jing Wei Hu, Rui Yan Fu, and Yi Bin Zhou

Abstract

An improved method for the separation and purification of rubropunctatin from red yeast glutinous rice was developed. In this method, silica gel column chromatography and thin layer chromatography were used to separate the Monascus pigments. Pure methanol and a mixture of ethyl acetate and methanol (13:7, v/v) were selected as the eluent and running solvent, respectively. When compared with previously reported methods, the developed method required fewer types of solvents, and could be suitable for large-scale laboratory production. The extracted pigment was analysed by ultra-high performance liquid chromatography quadrupole time of flight mass spectrometry (UPLC-Q-TOF-MS) and nuclear magnetic resonance (NMR) (1H NMR, 13C NMR). Structural analysis revealed a molecular mass of 353.2 m/z [M－H]－, and a structure including an azaphilone body with two side chains. This structure was consistent with that reported for rubropunctatin. Therefore, the improved purification method reported herein could efficiently be used for the extraction of rubropunctatin from red yeast glutinous rice.

Published
2021

7. Self-Adaptive Tuning of Fuzzy PID control of PV Grid-Connected Inverter

Author

Pan Yan, Qi Jianling, Sun Jinhao, Yan Xiaojin, and Li Yezi

Subjects
Adaptive control, Computer Science::Systems and Control, Control theory, Computer science, Photovoltaic system, PID controller, Inverter, Fuzzy control system, Fuzzy logic, Machine control
Abstract

The control of photovoltaic grid-connected inverter introduced self-adaptive tuning of fuzzy PID control in this paper, via measured the parameter of object under controls, used fuzzy consequence, comes true to parametric PID real time adjustment?achieved best control effect. By simulated demonstration of Matlab/Simulink, self-adaptive tuning of fuzzy PID controlling having improved the PV Grid-connected inverter system stability, has improved the mass of exporting wave, has made system be the fine moving, static state function concurrently.

Published
2009

8. Design of Fuzzy PID Controller and Application in Glass Furnace

Author

Deng Zhenjie, Li Yezi, and Qi Jianling

Subjects
Temperature control, Mathematics::General Mathematics, Computer science, MathematicsofComputing_NUMERICALANALYSIS, Glass furnace, PID controller, ComputerApplications_COMPUTERSINOTHERSYSTEMS, Control engineering, Fuzzy control system, Fuzzy logic, Nonlinear system, Computer Science::Systems and Control, Control theory, Hardware_CONTROLSTRUCTURESANDMICROPROGRAMMING, Intelligent control, Computer Science::Operating Systems
Abstract

In this paper, the structure and feature of fuzzy logic controllers are described first, then a new type of the fuzzy PID (proportional-integral-derivative) controller is presented. The fuzzy PID controller has the simplest structure, but it has the nonlinear properties, which provide the fuzzy PID control system with a superior performance over the conventional PID control system. The fuzzy PID controller is used in the temperature control of the glass furnace. The online running results show that this project is rational and effective.

Published
2007

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