Production function studies have mainly been directed at the formal health care sector, in particular hospitals. Health production function relating medical and/or non-medical health inputs to good health, however, have not been intensively investigated. This paper explores the possibility of employing a health production function to examine the relationship between preventive health programs a...

This paper presents a simple model in which a community must decide on the amount of real investment and investment in information so as to maximise the expected utility of consumption over two periods. It is shown that under conditions involving the product of the elasticity of the marginal utility of consumption and the elasticity of the production function that optimal real investment is eit...

We show how to greatly improve precision when determining bending elasticity of giant unilamellar vesicles. Taking advantage of the well-known quasi-spherical model of liposome flickering, we analyze the full probability distributions of the configurational fluctuations instead of limiting the analysis to the second moment measurements only as usually done in previously published works. This le...

Publication selection bias represents one of the most serious challenges to the integrity of empirical economics. We develop Heckman regression methods to solve this potentially persistent problem and apply these meta-regression methods to seventy five empirical estimates from the efficiency-wage literature. Although many researchers find mixed or ambiguous support for the efficiency wage hypot...

This paper studies the role of land as a factor of production in a simple monopolistic competition model of trade and geography. Overall we find that land for production is a powerful dispersion force. More specifically, we show that, in contrast to the new trade literature, a larger country will have lower wages, in general. Moreover, allowing for labor mobility, we show that agglomeration is ...

This note estimates the long-run demand for skilled and unskilled labor using panel data for Colombian manufacturing plants. Unobserved heterogeneity and measurement error problems that commonly arise in microdata production estimates are examined. Output measurement errors cause OLS estimators to underestimate the output and wage response of employment demand. Time-difference estimators exagge...

BACKGROUND Antioxidant supplementations have the potential to alleviate the atherosclerotic damage caused by excessive production of reactive oxygen species (ROS). The present study evaluated the effects of prolonged antioxidant treatment on arterial elasticity, inflammatory and metabolic measures in patients with multiple cardiovascular risk factors. METHODS Study participants were randomly ...

BACKGROUND/AIMS Our previous study confirmed that Aloe sterol stimulates collagen and hyaluronic acid production in human dermal fibroblasts. This study aims to investigate whether Aloe sterol intake affects skin conditions. METHODS We performed a 12-week, randomized, double-blind, placebo-controlled study to evaluate the effects of oral Aloe sterol supplementation on skin elasticity, hydrati...