Crump interprets the stories, rather than simply recounting them. Her background as a research biologist, and her fi eld experience with native peoples, give her a broad perspective on the topic. She weaves a deft blend of summary and commentary, and often returns to emergent themes. Why do particular species appear in leading roles? Why do snakes and toads so often end up both as hero and vill...

This paper presents a discounted cash-flow approach to an inventory model for deteriorating items with the &#10two-parameter Weibull distribution. According to our proposed model, two shortages are considered: back-orders and lost-sales, &#10in which the back-order rate is a varying function of the time when the shortage happens. In general, the demand rate is a linear function of the selling p...

We consider optimal hedging decisions for a firm whose stock returns are affected by market returns and an idiosyncratic factor that is orthogonal to the market return. We show that the level of firm’s cash flows depend on the level of the market and the level of the idiosyncratic factor multiplicatively because of compounding. Minimizing the variance of the cash flow requires a substantial off...

This study aims to investigate the impact of deviation from optimal level of cash holdings on adverse selection and moral hazard problems. The data set includes 106 listed firms of Tehran Stock Exchange during the period of 2005-2016 and both panel data and cross-sectional data multivariate regressions were utilized in different stage of analysis to test the hypotheses. According to the optimal...