نتایج جستجو برای: heckman two stage analysis

تعداد نتایج: 4895346  

2007
Ji-Ha Kim

Private tutoring (PT) has been a growing economic phenomenon in South Korea for many years. This study investigated the determinants of the demand for PT in South Korea. Data were collected from 45 proportionally stratified South Korean high schools, and 3,605 questionnaires were analyzed using the Heckman two-stage sample selection correction method. Additionally this study exploited the local...

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2017
Xuecai Xu S C Wong Feng Zhu Xin Pei Helai Huang Youjun Liu

PURPOSE The objective of this paper is to provide a new method for estimating crash rate and severity simultaneously. METHODS This study explores a Heckman selection model of the crash rate and severity simultaneously at different levels and a two-step procedure is used to investigate the crash rate and severity levels. The first step uses a probit regression model to determine the sample sel...

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Journal: :Materials Today: Proceedings 2021

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Journal: :Advances in Applied Mathematics 2017

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Journal: :Games and Economic Behavior 2010

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Journal: :IFAC-PapersOnLine 2019

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Journal: :Pharmaceutica Analytica Acta 2015

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Journal: :Mechanics & Industry 2017

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Journal: :Review of Agricultural and Applied Economics 2015

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2010
Flávio Cunha

Human capital production in the U.S. economy is no longer what it used to be. Graduation rates for high school and college have fallen (Card and Lemieux 2001; Heckman and Lafontaine 2007). As a result, the rate of growth of the stock of human capital has slowed considerably (Goldin and Katz 2008). At the same time, other countries are improving their educational attainment. Although the United ...

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