1.Introduction In the previous discussion on the logic of thinking of Zhou Yi,we have attempted to examine the evolution from the eight diagrams to the sixty-four hexagrams,in the hope of fi nding out what it tries to...1.Introduction In the previous discussion on the logic of thinking of Zhou Yi,we have attempted to examine the evolution from the eight diagrams to the sixty-four hexagrams,in the hope of fi nding out what it tries to convey to its readers and how it achieves its aim.1Our conclusion is:Zhou Yi set up a thinking model which deeply infl uenced the Chinese traditional culture and we can see its infl uences in today’s China.Moreover,the interpretations of the symbolic diagrams provided展开更多
We use the functional principal component analysis(FPCA) to model and predict the weight growth in children.In particular,we examine how the approach can help discern growth patterns of underweight children relative t...We use the functional principal component analysis(FPCA) to model and predict the weight growth in children.In particular,we examine how the approach can help discern growth patterns of underweight children relative to their normal counterparts,and whether a commonly used transformation to normality plays any constructive roles in a predictive model based on the FPCA.Our work supplements the conditional growth charts developed by Wei and He(2006) by constructing a predictive growth model based on a small number of principal components scores on individual's past.展开更多
Teachers and textbooks are two important elements in curriculum implementation.Based on Concerns-Based Adoption Model(CBAM),a curriculum implementation measurement model designed by G.Hall and S.M.Hord,this paper anal...Teachers and textbooks are two important elements in curriculum implementation.Based on Concerns-Based Adoption Model(CBAM),a curriculum implementation measurement model designed by G.Hall and S.M.Hord,this paper analyzes the general process of curriculum implementation in terms of textbook use,establishes a model that gauges the level of textbook use and thus improves TC component check list designed by S.M.Hord.By studying five primary school math teachers,this paper measures their level of textbook use and makes a relevant comparative analysis.The result shows that the level of textbook use model is valid and accurate,and could therefore help improve teacher’s skill of textbook use and their professional development.展开更多
Most of the previous researches about portfolio analysis focus on short-selling. In fact, no short-selling is also important because short-selling is not allowed in stock markets of some countries. This paper gives th...Most of the previous researches about portfolio analysis focus on short-selling. In fact, no short-selling is also important because short-selling is not allowed in stock markets of some countries. This paper gives the sufficient and necessary conditions and proposes an optimal algorithm for Markowitz’s mean-variance models and Sharpe’s ratio with no short-selling. The optimal algorithm makes it easier to obtain the efficient frontiers with no short-selling.展开更多
文摘1.Introduction In the previous discussion on the logic of thinking of Zhou Yi,we have attempted to examine the evolution from the eight diagrams to the sixty-four hexagrams,in the hope of fi nding out what it tries to convey to its readers and how it achieves its aim.1Our conclusion is:Zhou Yi set up a thinking model which deeply infl uenced the Chinese traditional culture and we can see its infl uences in today’s China.Moreover,the interpretations of the symbolic diagrams provided
基金supported by National Natural Science Foundation of China (Grant No. 10828102)a Changjiang Visiting Professorship, the Training Fund of Northeast Normal University’s Scientific Innovation Project (Grant No. NENU-STC07002)the National Institutes of Health Grant of USA (Grant No. R01GM080503-01A1)
文摘We use the functional principal component analysis(FPCA) to model and predict the weight growth in children.In particular,we examine how the approach can help discern growth patterns of underweight children relative to their normal counterparts,and whether a commonly used transformation to normality plays any constructive roles in a predictive model based on the FPCA.Our work supplements the conditional growth charts developed by Wei and He(2006) by constructing a predictive growth model based on a small number of principal components scores on individual's past.
文摘Teachers and textbooks are two important elements in curriculum implementation.Based on Concerns-Based Adoption Model(CBAM),a curriculum implementation measurement model designed by G.Hall and S.M.Hord,this paper analyzes the general process of curriculum implementation in terms of textbook use,establishes a model that gauges the level of textbook use and thus improves TC component check list designed by S.M.Hord.By studying five primary school math teachers,this paper measures their level of textbook use and makes a relevant comparative analysis.The result shows that the level of textbook use model is valid and accurate,and could therefore help improve teacher’s skill of textbook use and their professional development.
基金the National Natural Science Foundation of China (Grant Nos. 10501005, 10701021)Northeast Normal University (Grant No. NENU-STC07001)
文摘Most of the previous researches about portfolio analysis focus on short-selling. In fact, no short-selling is also important because short-selling is not allowed in stock markets of some countries. This paper gives the sufficient and necessary conditions and proposes an optimal algorithm for Markowitz’s mean-variance models and Sharpe’s ratio with no short-selling. The optimal algorithm makes it easier to obtain the efficient frontiers with no short-selling.
