Unlike the limit equilibrium method(LEM), with which only the global safety factor of the landslide can be calculated, a local safety factor(LSF) method is proposed to evaluate the stability of different sections of a...Unlike the limit equilibrium method(LEM), with which only the global safety factor of the landslide can be calculated, a local safety factor(LSF) method is proposed to evaluate the stability of different sections of a landslide in this paper. Based on three-dimensional(3D) numerical simulation results, the local safety factor is defined as the ratio of the shear strength of the soil at an element on the slip zone to the shear stress parallel to the sliding direction at that element. The global safety factor of the landslide is defined as the weighted average of all local safety factors based on the area of the slip surface. Some example analyses show that the results computed by the LSF method agree well with those calculated by the General Limit Equilibrium(GLE) method in two-dimensional(2D) models and the distribution of the LSF in the 3D slip zone is consistent with that indicated by the observed deformation pattern of an actual landslide in China.展开更多
This paper presents a framework to study consumers＇ behaviors and the equilibrium in a durable market which includes secondary markets. The author puts forward a two-period model extending the Tirole＇s literature, a...This paper presents a framework to study consumers＇ behaviors and the equilibrium in a durable market which includes secondary markets. The author puts forward a two-period model extending the Tirole＇s literature, and analyzes the equilibrium in the used durable market under perfect and imperfect information. Moreover, the conclusion shows the important role of information to consumers＇ behaviors and the equilibrium in the entire market.展开更多
In the context of economic globalization,territory-based bilateral trade statistics are no longer compatible with the reality of cross-border flow of capital factor and rapid emergence of multinational firms.On the ba...In the context of economic globalization,territory-based bilateral trade statistics are no longer compatible with the reality of cross-border flow of capital factor and rapid emergence of multinational firms.On the basis of survey of literature studies,this paper has created a three-country model of bilateral trade based on ownership principle and demonstrated that ownership-based statistical system under this model can reflect bilateral trade volume and balance more objectively,truthfully and comprehensively.In addition to theoretical demonstration,this paper has revaluated China-US trade balance using ownership-based statistical methodology and the result indicates that the existing statistical system of trade severely overestimates the real level of China-US trade balance and FDI in China is a major reason behind increasing China-US trade surplus.展开更多
Using the trade statistical method based on asset ownership,this paper recalculated Sino-US bilateral trade volume and the result indicates that against traditional trade statistics,Chinese exports to the US reduced b...Using the trade statistical method based on asset ownership,this paper recalculated Sino-US bilateral trade volume and the result indicates that against traditional trade statistics,Chinese exports to the US reduced by an average of 51%while Chinese imports from the US increased by an average of 41%between 2004 and 2010.Balance of trade is in the range between US$2,189 billion of deficit and US$12.77 billion of surplus on the part of China,which are far smaller than the balance of Sino-US trade calculated by traditional statistical method.In order to reflect the real scale of China's foreign trade and effectively respond to Sino-US trade frictions,it is necessary for China to establish its trade statistics system based on asset ownership.展开更多
The aim of this study is to examine the profitabilily of multi-finance companies. This study uses macroeconomic determinants and fundamental variables as factors that affected profitability. The samples of the study w...The aim of this study is to examine the profitabilily of multi-finance companies. This study uses macroeconomic determinants and fundamental variables as factors that affected profitability. The samples of the study was multifinance company in Indonesia over period 2005-2007. The study uses an unbalanced panel data as a methodology. The result suggests that, the ownership of financial assets doesn＇t significantly affect multi-finance performances. This result indicates that multi-finance face difficult situation to generate profit from the credit given. And the result also suggests that all macroeconomic determinants affect multi-finance profitability, with more concern on inflation that have negative significant.展开更多
A class of robust location estimators called weighted randomly trimmed means are introduced and not only their consistency and asymptotic normality are proved, but their influence functions, asymptotic variances and b...A class of robust location estimators called weighted randomly trimmed means are introduced and not only their consistency and asymptotic normality are proved, but their influence functions, asymptotic variances and breakdown points are also derived. They possess the same breakdown points as the median, and some of them own higher asymptotic relative efficiencies at the heavy-tailed distributions than some other well-known location estimators; whereas the trimmed means, Winsorized means and Huber＇s M-estimator possess higher asymptotic relative efficiencies at the light-tailed distributions, in which Huber＇s M-estimator is the most robust.展开更多
基金financially supported by the National Natural Science Foundation of China(Grant No.51178402,10902112)Department of Transportation Technology Projects(Grant No.2011318740240)the Fundamental Research Funds for the Central Universities(Grant No.2682014CX074)
文摘Unlike the limit equilibrium method(LEM), with which only the global safety factor of the landslide can be calculated, a local safety factor(LSF) method is proposed to evaluate the stability of different sections of a landslide in this paper. Based on three-dimensional(3D) numerical simulation results, the local safety factor is defined as the ratio of the shear strength of the soil at an element on the slip zone to the shear stress parallel to the sliding direction at that element. The global safety factor of the landslide is defined as the weighted average of all local safety factors based on the area of the slip surface. Some example analyses show that the results computed by the LSF method agree well with those calculated by the General Limit Equilibrium(GLE) method in two-dimensional(2D) models and the distribution of the LSF in the 3D slip zone is consistent with that indicated by the observed deformation pattern of an actual landslide in China.
文摘This paper presents a framework to study consumers＇ behaviors and the equilibrium in a durable market which includes secondary markets. The author puts forward a two-period model extending the Tirole＇s literature, and analyzes the equilibrium in the used durable market under perfect and imperfect information. Moreover, the conclusion shows the important role of information to consumers＇ behaviors and the equilibrium in the entire market.
文摘In the context of economic globalization,territory-based bilateral trade statistics are no longer compatible with the reality of cross-border flow of capital factor and rapid emergence of multinational firms.On the basis of survey of literature studies,this paper has created a three-country model of bilateral trade based on ownership principle and demonstrated that ownership-based statistical system under this model can reflect bilateral trade volume and balance more objectively,truthfully and comprehensively.In addition to theoretical demonstration,this paper has revaluated China-US trade balance using ownership-based statistical methodology and the result indicates that the existing statistical system of trade severely overestimates the real level of China-US trade balance and FDI in China is a major reason behind increasing China-US trade surplus.
基金General Program of National Social Sciences Fund "Development and Application Research for theModel of Estimating the Structure of Sino-US Trade Interests(Approval No.13BJL055)"
文摘Using the trade statistical method based on asset ownership,this paper recalculated Sino-US bilateral trade volume and the result indicates that against traditional trade statistics,Chinese exports to the US reduced by an average of 51%while Chinese imports from the US increased by an average of 41%between 2004 and 2010.Balance of trade is in the range between US$2,189 billion of deficit and US$12.77 billion of surplus on the part of China,which are far smaller than the balance of Sino-US trade calculated by traditional statistical method.In order to reflect the real scale of China's foreign trade and effectively respond to Sino-US trade frictions,it is necessary for China to establish its trade statistics system based on asset ownership.
文摘The aim of this study is to examine the profitabilily of multi-finance companies. This study uses macroeconomic determinants and fundamental variables as factors that affected profitability. The samples of the study was multifinance company in Indonesia over period 2005-2007. The study uses an unbalanced panel data as a methodology. The result suggests that, the ownership of financial assets doesn＇t significantly affect multi-finance performances. This result indicates that multi-finance face difficult situation to generate profit from the credit given. And the result also suggests that all macroeconomic determinants affect multi-finance profitability, with more concern on inflation that have negative significant.
基金This research is supported by the National Natural Science Foundation of China （Grant No. 10371012, 10231030,and 40574020）.
文摘A class of robust location estimators called weighted randomly trimmed means are introduced and not only their consistency and asymptotic normality are proved, but their influence functions, asymptotic variances and breakdown points are also derived. They possess the same breakdown points as the median, and some of them own higher asymptotic relative efficiencies at the heavy-tailed distributions than some other well-known location estimators; whereas the trimmed means, Winsorized means and Huber＇s M-estimator possess higher asymptotic relative efficiencies at the light-tailed distributions, in which Huber＇s M-estimator is the most robust.
