Bounds for the median of the negative binomial distribution

Summary Bounds are obtained for the median of the negative binomial distribution which are valid for all possible parameter values of the distribution when the median is defined as inf {x: P(X≤x)≥1/2}.     

The moderating influence of HR operational autonomy on the entrepreneurial orientation–performance link in franchise systems

This study investigates the concept of HR Operational Autonomy, i.e., the freedom a franchisor offers to franchisees throughout the system with regards to their creation of HR practices. It is shown to have a significant positive moderating effect on the EO-performance link among UK franchise systems, explaining over 20 % of the variance in performance outcomes. Implications and future research directions are discussed.     

Conditional risk premia in currency markets and other asset classes

The downside risk capital asset pricing model (DR-CAPM) can price the cross section of currency returns. The market-beta differential between high and low interest rate currencies is higher conditional on bad market returns, when the market price of risk is also high, than it is conditional on good market returns. Correctly accounting for this variation is crucial for the empirical performance of the model. The DR-CAPM can jointly rationalize the cross section of equity, equity index options, commodity, sovereign bond and currency returns, thus offering a unified risk view of these asset classes. In contrast, popular models that have been developed for a specific asset class fail to jointly price other asset classes.