BP neural networks is used to mid-term earthquake prediction in this paper. Some usual prediction parameters of seismology are used as the import units of neural networks. And the export units of neural networks is ca...BP neural networks is used to mid-term earthquake prediction in this paper. Some usual prediction parameters of seismology are used as the import units of neural networks. And the export units of neural networks is called as the character parameter W_0 describing enhancement of seismicity. We applied this method to space scanning of North China. The result shows that the mid-term anomalous zone of W_0-value usually appeared obviously around the future epicenter 1~3 years before earthquake. It is effective to mid-term prediction.展开更多
This paper reports on a study of the relationship between learning strategies and reading comprehension. To establish the variables, a learning strategies’ questionnaire was administered to about 200 students in the ...This paper reports on a study of the relationship between learning strategies and reading comprehension. To establish the variables, a learning strategies’ questionnaire was administered to about 200 students in the second-year of a non-English majors degree course in a university in Changchun. Their learning achievement was established by their scores on a reading comprehension test. The relationship between learning strategies and achievement was then examined through the SPSS 8.0 statistical analysis system. It was found that cognitive strategies were the strongest predictor to reading achievement and four other variables (metacognitive strategies, social-affective strategies, reading habits and examination strategies) also demonstrated a significant relationship with reading achievement to differing degrees. Among these variables, social-affective strategies were the only negative predictor. In addition, a significant difference existed between the high-score group and the low-score group in the use of cognitive strategies, metacognitive strategies and examination strategies.展开更多
文摘BP neural networks is used to mid-term earthquake prediction in this paper. Some usual prediction parameters of seismology are used as the import units of neural networks. And the export units of neural networks is called as the character parameter W_0 describing enhancement of seismicity. We applied this method to space scanning of North China. The result shows that the mid-term anomalous zone of W_0-value usually appeared obviously around the future epicenter 1~3 years before earthquake. It is effective to mid-term prediction.
文摘This paper reports on a study of the relationship between learning strategies and reading comprehension. To establish the variables, a learning strategies’ questionnaire was administered to about 200 students in the second-year of a non-English majors degree course in a university in Changchun. Their learning achievement was established by their scores on a reading comprehension test. The relationship between learning strategies and achievement was then examined through the SPSS 8.0 statistical analysis system. It was found that cognitive strategies were the strongest predictor to reading achievement and four other variables (metacognitive strategies, social-affective strategies, reading habits and examination strategies) also demonstrated a significant relationship with reading achievement to differing degrees. Among these variables, social-affective strategies were the only negative predictor. In addition, a significant difference existed between the high-score group and the low-score group in the use of cognitive strategies, metacognitive strategies and examination strategies.
