The labor flow promotes the industrial structure evolution,thereby affecting the growth of productivity.In the western industrialized countries,improvement in labor productivity has become an important source of econo...The labor flow promotes the industrial structure evolution,thereby affecting the growth of productivity.In the western industrialized countries,improvement in labor productivity has become an important source of economic growth.On the basis of analyzing changes of the industrial structure,changes of the structure of labor factor,changes of labor productivity and the growth rate in Guangdong Province in different periods,we use shift-share method to analyze the labor productivity effect of industrial structure in Guangdong Province,and put forward the following recommendations for the adjustment of industrial structure in Guangdong Province:(i) The adjustment of industrial structure should promote the reasonable and effective flow of labor between industries;(ii) Accelerating the optimization of the industrial structure is conducive to economic growth and improvement in labor productivity;(iii) In addition to structural optimization,the improvement in labor productivity should also focus on the improvement in intra-industry technology.展开更多
The present study is focused on the structure of time frequency spectrum.A scaling law for Eulerian time frequency spectrum and the corresponding temporal structure function are calculated from the sweeping hypothesis...The present study is focused on the structure of time frequency spectrum.A scaling law for Eulerian time frequency spectrum and the corresponding temporal structure function are calculated from the sweeping hypothesis and Kolmogorov’s similarity law regarding spatial structure function.An experiment is designed to study this scaling law in the atmospheric turbulent boundary layer.The results well support the conclusion derived from relevant theoretical analysis.展开更多
This paper discusses how the infinite set of real numbers between 0 and 1 could be represented by a countably infinite tree structure which would avoid Cantor’s diagonalization argument that the set of real numbers i...This paper discusses how the infinite set of real numbers between 0 and 1 could be represented by a countably infinite tree structure which would avoid Cantor’s diagonalization argument that the set of real numbers is not countably infinite. Likewise, countably infinite tree structures could represent all real numbers, and all points in any number of dimensions in multi-dimensional spaces. The objective of this paper is not to overturn previous research based on Cantor’s argument, but to suggest that this situation may be treated as a definitional or axiomatic choice. This paper proposes a “non-Cantorian” branch of cardinality theory, representing all these infinities with countably infinite tree structures. This approach would be consistent with the Continuum Hypothesis.展开更多
One type of covariance structure is known as blocked compound symmetry.Recently,Roy et al.(J Multivar Anal 144:81–90,2016)showed that,assuming this covariance structure,unbiased estimators are optimal under normality...One type of covariance structure is known as blocked compound symmetry.Recently,Roy et al.(J Multivar Anal 144:81–90,2016)showed that,assuming this covariance structure,unbiased estimators are optimal under normality and described hypothesis testing for independence as an open problem.In this paper,we derive the distributions of unbiased estimators and consider hypothesis testing for independence.Representative test statistics such as the likelihood ratio criterion,Waldstatistic,Rao’s score statistic,and gradient statistic are derived,and we evaluate the accuracy of the test using these statistics through numerical simulations.The power of the Wald test is the largest when the dimension is high,and the power of the likelihood ratio test is the largest when the dimension is low.展开更多
文摘The labor flow promotes the industrial structure evolution,thereby affecting the growth of productivity.In the western industrialized countries,improvement in labor productivity has become an important source of economic growth.On the basis of analyzing changes of the industrial structure,changes of the structure of labor factor,changes of labor productivity and the growth rate in Guangdong Province in different periods,we use shift-share method to analyze the labor productivity effect of industrial structure in Guangdong Province,and put forward the following recommendations for the adjustment of industrial structure in Guangdong Province:(i) The adjustment of industrial structure should promote the reasonable and effective flow of labor between industries;(ii) Accelerating the optimization of the industrial structure is conducive to economic growth and improvement in labor productivity;(iii) In addition to structural optimization,the improvement in labor productivity should also focus on the improvement in intra-industry technology.
文摘The present study is focused on the structure of time frequency spectrum.A scaling law for Eulerian time frequency spectrum and the corresponding temporal structure function are calculated from the sweeping hypothesis and Kolmogorov’s similarity law regarding spatial structure function.An experiment is designed to study this scaling law in the atmospheric turbulent boundary layer.The results well support the conclusion derived from relevant theoretical analysis.
文摘This paper discusses how the infinite set of real numbers between 0 and 1 could be represented by a countably infinite tree structure which would avoid Cantor’s diagonalization argument that the set of real numbers is not countably infinite. Likewise, countably infinite tree structures could represent all real numbers, and all points in any number of dimensions in multi-dimensional spaces. The objective of this paper is not to overturn previous research based on Cantor’s argument, but to suggest that this situation may be treated as a definitional or axiomatic choice. This paper proposes a “non-Cantorian” branch of cardinality theory, representing all these infinities with countably infinite tree structures. This approach would be consistent with the Continuum Hypothesis.
文摘One type of covariance structure is known as blocked compound symmetry.Recently,Roy et al.(J Multivar Anal 144:81–90,2016)showed that,assuming this covariance structure,unbiased estimators are optimal under normality and described hypothesis testing for independence as an open problem.In this paper,we derive the distributions of unbiased estimators and consider hypothesis testing for independence.Representative test statistics such as the likelihood ratio criterion,Waldstatistic,Rao’s score statistic,and gradient statistic are derived,and we evaluate the accuracy of the test using these statistics through numerical simulations.The power of the Wald test is the largest when the dimension is high,and the power of the likelihood ratio test is the largest when the dimension is low.
