The purpose of this paper is to argue the effectiveness of self-regulated learning in English education in Chinese college classroom instruction. A study is given to show whether the introduction of self-regulated lea...The purpose of this paper is to argue the effectiveness of self-regulated learning in English education in Chinese college classroom instruction. A study is given to show whether the introduction of self-regulated learning can help improve Chinese college students' English learning, and help them perform better in the National English test-CET-4 (College English Test Level-4,).展开更多
Pipeline isolation plugging robot (PIPR) is an important tool in pipeline maintenance operation. During the plugging process, the violent vibration will occur by the flow field, which can cause serious damage to the p...Pipeline isolation plugging robot (PIPR) is an important tool in pipeline maintenance operation. During the plugging process, the violent vibration will occur by the flow field, which can cause serious damage to the pipeline and PIPR. In this paper, we propose a dynamic regulating strategy to reduce the plugging-induced vibration by regulating the spoiler angle and plugging velocity. Firstly, the dynamic plugging simulation and experiment are performed to study the flow field changes during dynamic plugging. And the pressure difference is proposed to evaluate the degree of flow field vibration. Secondly, the mathematical models of pressure difference with plugging states and spoiler angles are established based on the extreme learning machine (ELM) optimized by improved sparrow search algorithm (ISSA). Finally, a modified Q-learning algorithm based on simulated annealing is applied to determine the optimal strategy for the spoiler angle and plugging velocity in real time. The results show that the proposed method can reduce the plugging-induced vibration by 19.9% and 32.7% on average, compared with single-regulating methods. This study can effectively ensure the stability of the plugging process.展开更多
This study aims to explore the effects of motivational beliefs on non-English majors’ use of motivational regulation strategies by establishing a structural equation model. The survey of 301 sophomores indicated that...This study aims to explore the effects of motivational beliefs on non-English majors’ use of motivational regulation strategies by establishing a structural equation model. The survey of 301 sophomores indicated that(1)three motivational beliefs,self-efficacy,mastery goal orientation and task value correlated positively and significantly with each other;(2)all of them had direct and positive effects on the use of motivational regulation strategies and could predict 53% variance of the use of motivational regulation strategies;(3)self-efficacy had the largest direct and positive effects,mastery goal orientation’s effects were the second,and task value’s effects were the third.展开更多
文摘The purpose of this paper is to argue the effectiveness of self-regulated learning in English education in Chinese college classroom instruction. A study is given to show whether the introduction of self-regulated learning can help improve Chinese college students' English learning, and help them perform better in the National English test-CET-4 (College English Test Level-4,).
基金This work was financially supported by the National Natural Science Foundation of China(Grant No.51575528)the Science Foundation of China University of Petroleum,Beijing(No.2462022QEDX011).
文摘Pipeline isolation plugging robot (PIPR) is an important tool in pipeline maintenance operation. During the plugging process, the violent vibration will occur by the flow field, which can cause serious damage to the pipeline and PIPR. In this paper, we propose a dynamic regulating strategy to reduce the plugging-induced vibration by regulating the spoiler angle and plugging velocity. Firstly, the dynamic plugging simulation and experiment are performed to study the flow field changes during dynamic plugging. And the pressure difference is proposed to evaluate the degree of flow field vibration. Secondly, the mathematical models of pressure difference with plugging states and spoiler angles are established based on the extreme learning machine (ELM) optimized by improved sparrow search algorithm (ISSA). Finally, a modified Q-learning algorithm based on simulated annealing is applied to determine the optimal strategy for the spoiler angle and plugging velocity in real time. The results show that the proposed method can reduce the plugging-induced vibration by 19.9% and 32.7% on average, compared with single-regulating methods. This study can effectively ensure the stability of the plugging process.
基金sponsored by the Teaching Reform Project of Fujian Agricultural and Forestry University(111110011)(111416211)Foreign Language Teaching and Research Project of Foreign Languege Teaching and Research Press(2017121302)
文摘This study aims to explore the effects of motivational beliefs on non-English majors’ use of motivational regulation strategies by establishing a structural equation model. The survey of 301 sophomores indicated that(1)three motivational beliefs,self-efficacy,mastery goal orientation and task value correlated positively and significantly with each other;(2)all of them had direct and positive effects on the use of motivational regulation strategies and could predict 53% variance of the use of motivational regulation strategies;(3)self-efficacy had the largest direct and positive effects,mastery goal orientation’s effects were the second,and task value’s effects were the third.
