Descripción completa.

Descripción completa.

The apparent diffusion coefficients for sucrose and water during osmotic dehydration of jenipapos were determined. Long time experiments (up to 60 h) were carried out in order to determine equilibrium concentrations inside jenipapos, whereas short time experiments (up to 4…

The labor supply of female household heads is distributed across a wide
variety of hours and weeks choices. This papers explores the differential
nature of the weeks per year and hours per week decisions among female heads.
A model of…

This paper investigates the effect of entrepreneurs’ personal income tax situations on their
use of labor. We analyze the income tax returns of a large number of sole proprietors before and
after the Tax Reform Act of 1986 and determine…

Instrumental Variables (IV) estimates tend to be biased in the same direction as
Ordinary Least Squares (OLS) in finite samples if the instruments are weak. To address
this problem we propose a new IV estimator which we call Split Sample…

This paper develops a model of occupational matching where, within an
occupation, information at one job may be useful for predicting the match at
other jobs. Recent developments in the theory of superprocesses are used to
derive the optimal sampling…

This paper provides a long-term follow-up of students who participated in the Tennessee STAR experiment. The Tennessee STAR experiment randomly assigned l 1,600 elementary school
students and their teachers to a small class, regular-size class or regular-size class with a…

2010

An instrumental variable can be used to identify the labor market return to schooling by
allowing comparisons between groups of individuals whose differences in schooling levels are
uncorrelated with their underlying marginal benefit from schooling and with other aspects of