The stress combination method for the fatigue assessment of the hatch comer of a bulk carrier was investigated based on equivalent waves. The principles of the equivalent waves of ship structures were given, including...The stress combination method for the fatigue assessment of the hatch comer of a bulk carrier was investigated based on equivalent waves. The principles of the equivalent waves of ship structures were given, including the determination of the dominant load parameter, heading, frequency, and amplitude of the equivalent regular waves. The dominant load parameters of the hatch comer of a bulk carrier were identified by the structural stress response analysis, and then a series of equivalent regular waves were defined based on these parameters. A combination method of the structural stress ranges under the different equivalent waves was developed for the fatigue analysis. The combination factors were obtained by least square regression analysis with the stress ranges derived from spectral fatigue analysis as the target value. The proposed method was applied to the hatch comer of another bulk carrier as an example. This shows that the results from the equivalent wave approach agree well with those from the spectral fatigue analysis. The workload is reduced substantially. This method can be referenced in the fatigue assessment of the hatch comer of a bulk carrier.展开更多
反补贴已经成为WTO成员间贸易摩擦热点,产业损害是反补贴调查的重要内容,而产业损害幅度的确定是产业损害认定的核心问题。本文基于反事实分析与主成分分析方法,运用管理统计学与计量经济学模型,构建反补贴产业损害确定的FC(Factor anal...反补贴已经成为WTO成员间贸易摩擦热点,产业损害是反补贴调查的重要内容,而产业损害幅度的确定是产业损害认定的核心问题。本文基于反事实分析与主成分分析方法,运用管理统计学与计量经济学模型,构建反补贴产业损害确定的FC(Factor analysis and Counterfactanalysis)组合分析法。同时,结合2006年中美铜版纸案件进行实证研究并得出相应结论,以期给我国进口反补贴调查机关在实施进口反补贴措施中的产业损害确定提供现实借鉴。展开更多
To understand complex state behavior, a detailed study of strategic behavior is needed. To get rid of what is out-of-date and take in fresh perspectives, we need to eliminate the current methodological bottleneck and ...To understand complex state behavior, a detailed study of strategic behavior is needed. To get rid of what is out-of-date and take in fresh perspectives, we need to eliminate the current methodological bottleneck and take full advantage of multivariate research methods to explore the complex interactions among variables and develop a basic analytical framework. First, strategic behavior should be divided into four stages, i.e., strategic assessment, strategic decision-making, strategic mobilization and strategic implementation, then the factors affecting each stage should be clarified and their interactions grasped. A preliminary framework for understanding state strategic behavior will help to promote the in-depth development of this field of research.展开更多
基金Supported by the National Natural Science Foundation of China （50809019）.
文摘The stress combination method for the fatigue assessment of the hatch comer of a bulk carrier was investigated based on equivalent waves. The principles of the equivalent waves of ship structures were given, including the determination of the dominant load parameter, heading, frequency, and amplitude of the equivalent regular waves. The dominant load parameters of the hatch comer of a bulk carrier were identified by the structural stress response analysis, and then a series of equivalent regular waves were defined based on these parameters. A combination method of the structural stress ranges under the different equivalent waves was developed for the fatigue analysis. The combination factors were obtained by least square regression analysis with the stress ranges derived from spectral fatigue analysis as the target value. The proposed method was applied to the hatch comer of another bulk carrier as an example. This shows that the results from the equivalent wave approach agree well with those from the spectral fatigue analysis. The workload is reduced substantially. This method can be referenced in the fatigue assessment of the hatch comer of a bulk carrier.
文摘反补贴已经成为WTO成员间贸易摩擦热点,产业损害是反补贴调查的重要内容,而产业损害幅度的确定是产业损害认定的核心问题。本文基于反事实分析与主成分分析方法,运用管理统计学与计量经济学模型,构建反补贴产业损害确定的FC(Factor analysis and Counterfactanalysis)组合分析法。同时,结合2006年中美铜版纸案件进行实证研究并得出相应结论,以期给我国进口反补贴调查机关在实施进口反补贴措施中的产业损害确定提供现实借鉴。
基金support from the National Social Science Foundation Project "Research on the Analytical Framework and Instruments of International Strategic Studies"(No.:12BZZ053)the Ministry of Education Key Institute of the Humanities and Social Sciences(Center of American Studies,Fudan University) Major Project "Strategic Behavior in History:A Comparison between the U.S.and Other Countries"(No.:11JJD810017)
文摘To understand complex state behavior, a detailed study of strategic behavior is needed. To get rid of what is out-of-date and take in fresh perspectives, we need to eliminate the current methodological bottleneck and take full advantage of multivariate research methods to explore the complex interactions among variables and develop a basic analytical framework. First, strategic behavior should be divided into four stages, i.e., strategic assessment, strategic decision-making, strategic mobilization and strategic implementation, then the factors affecting each stage should be clarified and their interactions grasped. A preliminary framework for understanding state strategic behavior will help to promote the in-depth development of this field of research.
