Do Community Characteristics Influence Environmental Outcomes? Evidence from the Toxics Release Inventory

This research uses neighborhood characteristics (at the zip code level) in 1990 to explain toxic releases in 1993. It combines the Toxics Release Inventory data with demographic data from the 1990 U.S. Census. We first analyze the location of manufacturing facilities in a particular neighborhood using a sample selection model, and then estimate the relationship between releases in 1993 and the demographic characteristics of the neighborhood in 1990. We conduct the analysis for the entire U.S. as well as for different geographic regions to study regional differences in determinants of environmental outcomes. Releases in nonurban areas of the southeastern U.S. exhibit a pattern suggesting that race might be an important determinant of release patterns. Economic characteristics of neighborhoods (such as income levels and unemployment) also affect releases. Our variables that proxy the propensity for communities to engage in political action exert greater influence on environmental outcomes in nonurban areas.     

Image and cost factors in the choice of mental health-care organizations: A causal model

The importance of image as a determinant of choice has been demonstrated for banks, supermarkets, hospitals and other service organizations, but not in the instance of mental health-care providers. Based on a mail survey of residents of a medium-sized metropolitan area, this study explores the components of image for mental health-care institutions. A causal model is hypothesized and validated, specifying the relationships between preferences towards mental health-care institutions, with image and cost factors as potential determinants. The findings suggest that cost does not play a significant role in the choice of mental health providers, whereas image has a significant impact.     

The effect of multi-purpose shopping on pricing and location strategy for grocery stores

Though it is a well-accepted fact that consumers indulge in multi-purpose shopping, most previous models of store choice assume that grocery shopping trips are single-purpose trips. This paper provides the first empirical analysis of multi-purpose shopping using data on actual shopping trips. A latent class factor analytic logit model is proposed, which provides a representation of the market structure of grocery store competition, while integrating; multi-purpose shopping, retail pricing format and location strategy. We conclude that incorporating multi-purpose shopping trips provides a better understanding of the competitive market structure, and discuss the managerial implications for the selection of marketing strategies.     

On someE-optimal block designs

Summary TheE-optimality of block designs is the concern of this paper. Bounds for the smallest positive eigenvalue of theC-matrix of block designs are obtained in some general classes of connected designs with equal or unequal block sizes. Use of these bounds is made to obtainE-optimal block designs in various classes.     

Binomial Option Pricing Biases and Inconsistent Implied Volatilities

We evaluate the binomial option pricing methodology (OPM) by examining simulated portfolio strategies. A key aspect of our study involves sampling from the empirical distribution of observed equity returns. Using a Monte Carlo simulation, we generate equity prices under known volatility and return parameters. We price American–style put options on the equity and evaluate the risk–adjusted performance of various strategies that require writing put options with different maturities and moneyness characteristics. The performance of these strategies is compared to an alternative strategy of investing in the underlying equity. The relative performance of the strategies allows us to identify biases in the binomial OPM leading to the well–known volatility smile . By adjusting option prices so as to rule out dominated option strategies in a mean–variance context, we are able to reduce the pricing errors of the OPM with respect to option prices obtained from the LIFFE. Our results suggest that a simple recalibration of inputs may improve binomial OPM performance.     

Entry in a Dynamic Model with Equilibrium Price Dispersion with an Application to the Market for Long-Distance Telephone Services

Models of entry based on the traditional models of oligopoly do not allow for price dispersions on homogenous products. Yet, such price dispersions do exist for homogenous products, and a firm does not lose its entire market share when it fails to charge the lowest price. Existing models of equilibrium price dispersion are not designed to analyze entry in a dynamic framework. A dynamic model is developed that allows an analysis of the effects of entry into a previously monopolized market. Despite asymmetric initial shares, the market shares of equally efficient firms tend to equalize over time. An application is the market for long‐distance telephone services following the divestiture of the bell operating companies from AT&T.     

BUDGET DEFICITS, DOMESTIC INVESTMENT, AND TRADE DEFICITS

This paper summarizes recent empirical studies on the effects of budget deficits on interest rates, investment, and trade deficits in the United States. It also reports new evidence on the effects of budget deficits on investment and on trade deficits for the 1980s. The results support the view that budget deficits crowd out domestic investment and increase trade deficits.     

A critical examination of team-teaching of health care administration courses: student, faculty, and administration perspective

There are several teaching techniques adopted by faculty in order to provide information to students in the most effective manner. One of the relatively new teaching techniques is known as team-teaching. It has been observed that over the recent years this form of teaching has been gaining increasing interest and popularity among academicians. Nevertheless, there seems to be a great deal of confusion associated with team-teaching format. This paper attempts to clarify the various definitions and concerns that are associated with this form of teaching. The pros and cons of this form of teaching are discussed in detail.     

An application of models of speculative behaviour to oil prices

We estimate three different models of speculative behaviour using oil price data. Our findings provide support for the claim by Phillips and Yu (2011) and Gilbert (2010) that a bubble in oil prices existed for a short period in 2008.