This paper presents a methodology extension of Deaton's (1990) model for estimating price elasticities, by pooling data from several surveys to improve the inter-cluster variability of unit values which is one of the key elements used inthe derivation of these elasticities. Since the surveys...

We study postpartum decisions about paid work and breastfeeding using a simultaneous equations model. For our sample of higher socioeconomic status mothers, we find a joint decision process for three sets of decisions modeled: work leave duration and duration of any, as well as of exclusive,...

We present a simple model which describes elastic response of single-stranded DNA (ssDNA) to stretching, including the regime of very high force (up to 1000pN). ssDNA is modelled as a discrete persistent chain, whose ground state is a zigzag rather than a straight line configuration. This mimics...

Traditional economic theory predicts that unfunded social security can be justified on the basis of its ability to efficiently finance retirement, and also for its ability to provide insurance against mortality risk and uninsurable shocks to labor income. In this paper, I demonstrate that the...

This study examined consumer demand for organic fluid milk in the current maturing organic market using a nationwide weekly retail scanner data set. An Almost Ideal Demand System in which both organic milk and conventional milk were further decomposed into products with different fat content was...