Between 1996 and 2003, a series of amendments were made to the Tax Reform Act of 1986 that gradually increased the tax deduction for health insurance purchases by the self-employed (SE) from 25 to 100 percent. We study how these changes have influenced the likelihood that a SE person has health insurance coverage as the policyholder. The Current Population Survey is used to construct a data set...

Large genomic DNA insert-containing libraries are required as critical tools for physical mapping, positional cloning, and genome sequencing of complex genomes. The bacterial artificial chromosome (BAC) cloning system has become a dominant system over others to clone large genomic DNA inserts. As the costs of positional cloning, physical mapping, and genome sequencing continuously decrease, the...

We apply Berry, Levinsohn and Pakes (1995) to jointly estimate demand and cost parameters for all 178 brands (products) in Retail Carbonated Soft Drinks over 28 bi-monthly periods. Our innovation is to randomize over store coverage (weighted by store size) to create a distribution of consumers’ taste for location convenience to each brand. Such distributions and their interaction with price ent...

In cellular communications, the amount of total available resources (frequency-time plane) and the QoS requirements jointly determine the capacity per cell. And, the transmit power (especially in the reverse-link) and the propagation conditions determine the cell size. If the demand per cell happens to be (much) greater than the cell capacity, there exists a capacity shortage. Well-known soluti...

Wireless networks, as compared to its wired counterpart, bring improved coverage yet enhanced convenience and low cost in deployment. As a result, a couple of emerging wireless networks, such as cognitive radio networks, wireless sensor networks, WiMAX/LTE, adaptive communications, etc., have proliferated to meet the surge wireless traffic demand and provide ubiquitous communication at diverse ...

We explore how private drug plans set cost-sharing in the context of Medicare Part D. While publicly-provided drug coverage typically involves uniform cost-sharing across drugs, we document substantial heterogeneity in the cost-sharing for different drugs within privately-provided plans. We also document that private plans systematically set higher consumer cost sharing for drugs or classes ass...