for maximum impact, high yielding improved varieties with significant yield advantages must be targeted to farmers and localities that value this trait most. explaining farmers’ demand for yield can serve as a means of targeting the development and dissemination of high yielding varieties. this paper analyzes data collected from 395 farmers in northern ethiopia using a zero-limit tobit regressi...

Fatality Rates for Crashes Involving Heavy Vehicles on Highways: A Random Parameter Tobit Regression Approach Mouyid Islam PhD & Salvador Hernandez PhD a Highway Safety Engineer, CH2M HILL, Inc, 8735 West Higgins Road, Chicago, IL 60631 b Assistant Professor, School of Civil and Construction Engineering, Oregon State University220 Owen Hall, Corvallis, OR 97331, Email: . Accepted author version...

This paper uses stochastic frontier analysis and Tobit regressions to provide international evidence on the impact of regulatory, supervision and environmental factors on bank efficiency. Our contribution is twofold. First, we use a newly constructed database of 3,086 observations from 677 publicly quoted commercial banks operating in 88 countries to provide cross-country evidence on the determ...

In this appendix we explain how to use our estimates and software to predict the EQ-5D when only the SF-12 is available. 1) Using our estimates: In the following example, we use estimates from the Mixture 2 model to make predictions based on classification (CEC). Table 2 shows parameters in the EQ-5D scale but in this example we use parameters in the reversed scale (1-EQ-5D) and we also use est...

This research analyses the efficiency of China’s banks using the data envelopment analysis (DEA). The Chinese government began its reforms of the banking industry reform since 1978. Our data set contains twelve banks in China during the period of 1996 to 2003. All nominal variables are transformed into real variables in the 2003 prices. There are twelve banks including four state-owned speciali...

Quantitative measurements of environmental factors greatly improve the quality of epidemiologic studies but can pose challenges because of the presence of upper or lower detection limits or interfering compounds, which do not allow for precise measured values. We consider the regression of an environmental measurement (dependent variable) on several covariates (independent variables). Various s...

The nonlinear fixed-effects model has two shortcomings, one practical and one methodological. The practical obstacle relates to the difficulty of computing the MLE of the coefficients of non-linear models with possibly thousands of dummy variable coefficients. In fact, in many models of interest to practitioners, computing the MLE of the parameters of fixed effects model is feasible even in pan...

Land, trees, and women : evolution of land tenure institutions in western Ghana and Sumatra / Agnes R. Quisumbing. .. [et al.]. Contents Tables v Figures vii Foreword ix Acknowledgments xi Summary xiii 1. Issues and Motivation for Policy Analysis 1 2. Tables 3.1. Land-use pattern, farm size, and person–land ratio in 1997 in selected villages in Ghana 27 3.2. Distribution of currently adopted in...