In order to realize the prediction of a chaotic time series of mine water discharge,an approach incorporating phase space reconstruction theory and statistical learning theory was studied.A differential entropy ratio ...In order to realize the prediction of a chaotic time series of mine water discharge,an approach incorporating phase space reconstruction theory and statistical learning theory was studied.A differential entropy ratio method was used to determine embedding parameters to reconstruct the phase space.We used a multi-layer adaptive best-fitting parameter search algorithm to estimate the LS-SVM optimal parameters which were adopted to construct a LS-SVM prediction model for the mine water chaotic time series.The results show that the simulation performance of a single-step prediction based on this LS-SVM model is markedly superior to that based on a RBF model.The multi-step prediction results based on LS-SVM model can reflect the development of mine water discharge and can be used for short-term forecasting of mine water discharge.展开更多
Constructivism is an important branch of cognitive theory. It is a leading theory of education at the end of 20th century and the early 21th century. Language itself is a kind of social construct, learning a language ...Constructivism is an important branch of cognitive theory. It is a leading theory of education at the end of 20th century and the early 21th century. Language itself is a kind of social construct, learning a language is construct personal knowledge. Under the guidance of constructivist learning theory, English teaching has transformed into a student-centered self-construct mode. It created a new situation that students can receive the overall development and personality development through situation setting, collaborative learning and meaning construction.展开更多
This article critically examines three most influential learning theories that underlie the instruction and learning environments in second language learning (SLL). Evaluation follows the description of each theory. T...This article critically examines three most influential learning theories that underlie the instruction and learning environments in second language learning (SLL). Evaluation follows the description of each theory. The point is to understand the impacts of different theories on second language learning. The paper argues that an integrated approach, which combines the three theories, is needed.展开更多
Mathematical equations are now found not only in the books, but also they help in finding solutions for the biological problems by explaining the technicality of the current biological models and providing predictions...Mathematical equations are now found not only in the books, but also they help in finding solutions for the biological problems by explaining the technicality of the current biological models and providing predictions that can be validated and complemented to experimental and clinical studies. In this research paper, we use the mset theory to study DNA ＆： RNA mutations to discover the mutation occurrence. Also, we use the link between the concept of the meet and topology to determine the compatibility or similarity between ＂types＂, which may be the strings of bits, vectors, DNA or RNA sequences, etc.展开更多
基金supported by the Science and Research projects for Ph.D. candidates in the faculty of Xuzhou Normal University (No.08XLR12)Natural Science Foundation of Xuzhou Normal University (No.09XLA10)
文摘In order to realize the prediction of a chaotic time series of mine water discharge,an approach incorporating phase space reconstruction theory and statistical learning theory was studied.A differential entropy ratio method was used to determine embedding parameters to reconstruct the phase space.We used a multi-layer adaptive best-fitting parameter search algorithm to estimate the LS-SVM optimal parameters which were adopted to construct a LS-SVM prediction model for the mine water chaotic time series.The results show that the simulation performance of a single-step prediction based on this LS-SVM model is markedly superior to that based on a RBF model.The multi-step prediction results based on LS-SVM model can reflect the development of mine water discharge and can be used for short-term forecasting of mine water discharge.
文摘Constructivism is an important branch of cognitive theory. It is a leading theory of education at the end of 20th century and the early 21th century. Language itself is a kind of social construct, learning a language is construct personal knowledge. Under the guidance of constructivist learning theory, English teaching has transformed into a student-centered self-construct mode. It created a new situation that students can receive the overall development and personality development through situation setting, collaborative learning and meaning construction.
文摘This article critically examines three most influential learning theories that underlie the instruction and learning environments in second language learning (SLL). Evaluation follows the description of each theory. The point is to understand the impacts of different theories on second language learning. The paper argues that an integrated approach, which combines the three theories, is needed.
文摘Mathematical equations are now found not only in the books, but also they help in finding solutions for the biological problems by explaining the technicality of the current biological models and providing predictions that can be validated and complemented to experimental and clinical studies. In this research paper, we use the mset theory to study DNA ＆： RNA mutations to discover the mutation occurrence. Also, we use the link between the concept of the meet and topology to determine the compatibility or similarity between ＂types＂, which may be the strings of bits, vectors, DNA or RNA sequences, etc.
