Gender-Based Harvesting in Wildlife Disease Management

Wildlife disease management strategies traditionally focus on lowering aggregate host density below a host-density threshold, reducing infectious contacts (when transmission is density-dependent) to reduce prevalence. The focus on aggregate host density is because controls such as harvests are typically nonselective with respect to disease status. Such nontargeted strategies increase control costs and may not optimally lead to eradication. We consider targeting an observable trait correlated with infection—gender. Two endogenous host-density thresholds emerge, in contrast to the exogenous thresholds arising in the ecological literature on multiple-host-pathogen problems. The ability to manage these thresholds reduces control costs and makes eradication optimal.     

A framework for agro-terrorism intentions detection using overt data sources

Agro-terrorism is a hostile attack, towards an agricultural environment, including infrastructures and processes, in order to significantly damage national and international political interests. This article provides a framework for reducing agro-terrorism-related risks by either means of foresight (prevention) or early detection of exotic/foreign pathogenic agents and their dispersion patterns. It focuses on intention detection using overt data sources on the World Wide Web as they relate to agro-terrorism threats. The paper defines agro-terrorism, examines data characteristics, identifies weaknesses among the intelligence community that must be addressed, then integrates the classical intelligence cycle for early detection that may lead to prevention of such acts.     

Tax arbitrage restrictions and financial leverage clienteles

This paper argues that while total short sale constraints are often introduced to rule out tax arbitrage, such constraints are both unrealistic and conceptually problematic. Instead, milder constraints are advocated, which prevent tax arbitrage while still allow short positions. It is demonstrated that a model with these constraints employed can support bond pricing as in the Miller equilibrium, although it leads to a richer set of tax clienteles.     

The Aggregation and Valuation of Deferred Taxes

Review of Accounting Studies - This paper clarifies some of the conflicting arguments about the value relevance of deferred taxes. We address two questions. First, does accounting aggregation hold,...     

Valuation of Internet Stocks—An IPO Perspective

We empirically investigate valuations of Internet firms at various stages of the initial public offering (IPO) from two perspectives. First, we examine the association between the valuation of Internet IPOs and a set of financial and nonfinancial variables, which prior anecdotal or empirical evidence suggests may serve as value drivers. Second, we document differences in IPO valuations between Internet and non-Internet firms as well as across different stages in the IPO process—i.e., initial prospectus price, final offer price, and first trading day price—within each set of firms. Our primary two conclusions are as follows. First, there are noticeable differences between valuations of Internet and non-Internet firms, especially at the prospectus and final IPO stage. Specifically, the valuation of non-Internet firms generally follows the conventional wisdom regarding valuation: positive earnings and cash flows are priced, while negative earnings and negative cash flows are not. The valuation of Internet firms, however, departs from conventional wisdom, with earnings not being priced, and negative cash flows being priced perhaps because they are viewed as investments. This difference between the two classes of firms may be expected, given the age and unique nature of the Internet industry. Second, there are significant differences between the initial valuation of firms at the prospectus and IPO stage and their valuation by the stock market at the end of the first trading day. For non-Internet firms, the difference is largely ascribed to the relative offering size. For Internet firms, however, the differences are with respect to positive cash flows, sales growth, R&D, and high-risk warnings, in addition to the relative offering size.     

Manure Applications and Nutrient Standards

Because of environmental concerns, many states are regulating animal manure applications to crops. A conceptual model is presented to describe manure demand for crop nutrient application under alternative regulatory standards. Demand relationships are incorporated into a spatial equilibrium model to estimate welfare costs of phosphorus and nitrogen regulatory standards for manure applications. Model estimates for Virginia indicate that regulatory standards for manure application achieve large reductions in excess nitrogen and phosphorus and result in 5–15% welfare losses excluding nonmarket environmental valuation.     

Strategy,strategy-making,and performance in a business game

In a recent study, Segev (1987) examined the relationships among strategy, strategy-making, and performance, focusing on the connection between two important typologies: Miles and Snow's (1978) concept of strategic types and Mintzberg's (1973) concept of strategy-making modes. The findings of that study clearly indicated links between the two, and partially supported propositions asserting the effects of the strategy/stategy-making fit on organizational performance. In the current study a business game served as the vehicle for examining this tripartite relationship. The two typologies were applied to the firms' in the game, and then an inquiry was made into the relationships between them. An hypothesis regarding the effect of fit on performance was tested, and the findings compared with previously reported empirical results.