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Determinants of Female Employment Rate in the European Union 被引量:1
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作者 Irena Spasenoska Merale Fetahu-Vehapi 《Chinese Business Review》 2011年第11期1076-1090,共15页
The aim of this paper is to provide a clear insight about the determinants of female employment rate in the European Union where we have used panel data analyses of 27 countries members of the European Union from 1995... The aim of this paper is to provide a clear insight about the determinants of female employment rate in the European Union where we have used panel data analyses of 27 countries members of the European Union from 1995 till 2009. Applying dynamic modeling, i.e, generalized method of moments (GMM) econometrics findings have driven us to system estimated model where the following institutional variables have been tested: maternity leave, child care facilities, college education, fertility rate, GDP growth, female unemployment rate and part-time employment. We expect these variables to have a positive impact on the female employment rate except for the female unemployment rate and maternity leave 展开更多
关键词 female employment rate European Union dynamic panel data analysis
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Dynamic single-index model for functional data 被引量:2
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作者 MA HaiQiang BAI Yang ZHU ZhongYi 《Science China Mathematics》 SCIE CSCD 2016年第12期2561-2584,共24页
We propose a new functional single index model, which called dynamic single-index model for functional data, or DSIM, to efficiently perform non-linear and dynamic relationships between functional predictor and functi... We propose a new functional single index model, which called dynamic single-index model for functional data, or DSIM, to efficiently perform non-linear and dynamic relationships between functional predictor and functional response. The proposed model naturally allows for some curvature not captured by the ordinary functional linear model. By using the proposed two-step estimating algorithm, we develop the estimates for both the link function and the regression coefficient function, and then provide predictions of new response trajectories. Besides the asymptotic properties for the estimates of the unknown functions, we also establish the consistency of the predictions of new response trajectories under mild conditions. Finally, we show through extensive simulation studies and a real data example that the proposed DSIM can highly outperform existed functional regression methods in most settings. 展开更多
关键词 functional data analysis dynamic single-index model local linear smoothing prediction
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Elliptical distortion of the Milky Way's rotation traced by high-mass star-forming regions
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作者 Ping-Jie Ding Zi Zhu Jia-Cheng Liu 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2017年第11期85-94,共10页
The gravitational potential of the Milky Way is non-axisymmetric, caused by a bar or triaxial halo, which dominates elliptical rotation of the Milky Way. Employing a likelihood analysis, we exploit the astrometric dat... The gravitational potential of the Milky Way is non-axisymmetric, caused by a bar or triaxial halo, which dominates elliptical rotation of the Milky Way. Employing a likelihood analysis, we exploit the astrometric data of masers thoroughly and constrain the elliptical rotation of the Galaxy. Masers in high-mass star-forming regions, observed by VLBA, are more distant tracers than stars observed in the optical bandpass, and thus are more appropriate for studying the global feature of the Milky Way's rotation. A clear elliptical potential of the Milky Way is detected, with an ellipticity of ε0-0.09 at the Sun, and the ellipticity increases towards the outer disk. The minor axis of the elliptical potential (the major axis of the rotation orbit) is found to be near the Sun with a displacement of -32°. Based on the rotation model assumed for an elliptical potential, we also make a kinematical calibration of the Galactocentric distance of the Sun, which gives R0 = 7.63±0.34 kpc. 展开更多
关键词 astrometry -- Galaxy: fundamental parameters -- Galaxy: kinematics and dynamics --methods: data analysis
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A Scalable Infrastructure for Online Performance Analysis on CFD Application 被引量:1
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作者 HU Kai DING Yi +1 位作者 ZHANG Xinyu JIANG Shu 《Chinese Journal of Aeronautics》 SCIE EI CSCD 2012年第4期546-558,共13页
The fast-growing demand of computational fluid dynamics(CFD) application for computing resources stimulates the development of high performance computing(HPC) and meanwhile raises new requirements for the technolo... The fast-growing demand of computational fluid dynamics(CFD) application for computing resources stimulates the development of high performance computing(HPC) and meanwhile raises new requirements for the technology of parallel application performance monitor and analysis.In response to large-scale and long-time running for the application of CFD,online and scalable performance analysis technology is required to optimize the parallel programs as well as to improve their operational efficiency.As a result,this research implements a scalable infrastructure for online performance analysis on CFD application with homogeneous or heterogeneous system.The infrastructure is part of the parallel application performance monitor and analysis system(PAPMAS) and is composed of two modules which are scalable data transmission module and data storage module.The paper analyzes and elaborates this infrastructure in detail with respect to its design and implementation.Furthermore,some experiments are carried out to verify the rationality and high efficiency of this infrastructure that could be adopted to meet the practical needs. 展开更多
关键词 computational aerodynamics computational fluid dynamics scalability online analysis data transmission data storage
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