Background: Concerns have been raised about physician ownership of onsite advanced imaging equipment as allowed under Stark laws by the in-office ancillary service exception (IOASE). Methods: A web-based survey of orthopedic practices in the United States was used to assign a first date of...

The behaviour of limit order quotes and trading activity are studied using a unique and rich database that includes the identity of market participants from a fully automated derivatives market. The analysis is performed using transactions records for three aggregated trader types and three...

This paper investigates the impact of annual report readability on the corporate bond market. My findings indicate that in the US corporate bond market, firms with less readable annual reports tend to have higher credit spreads, higher credit spread volatilities, higher transaction costs, higher...

One way for jurisdictions with limited analytic resources to increase their capability for doing cost-benefit analysis (CBA) is to use existing shadow prices, or "plug-ins", for important social impacts. This article contributes to the further development of one important shadow price: the value...

Large amounts of e-waste are processed "informally" in lower income countries. Such processing releases dangerous pollutants, which increase mortality and reduce cognitive functioning. This paper estimates the social cost of informal e-waste processing in Southern China. This parameter may be...

This study aims to investigate whether Bangladesh rice still has comparative advantage if fertilizer subsidy is lifted up, and to what extent the reduction of cost inefficiency raise comparative advantage. For that purpose, we calculate “Domestic Resource Cost (DRC)” as an indicator of...

Exchange-traded funds (ETFs) exist for stock, bond and commodity markets. In most cases the underlying feature of an ETF is an index. Fund management today uses the active and the passive way to construct a portfolio. ETFs can be used for passive portfolio management, for which ETFs with...

Seit Mitte der 1990er Jahre werden 'Wetterderivate' als neues Instrument zum Management wetterbedingter Mengenrisiken diskutiert. Im Gegensatz zu schadensbezogenen Versicherungen erfolgt der Hedge bei Wetterderivaten durch an Wetterindizes (Niederschlagssummen, Temperatursummen etc.) gekoppelte...

We investigate a portfolio optimization problem under the threat of a market crash, where the interest rate of the bond is modeled as a Vasicek process, which is correlated with the stock price process. We adopt a non-probabilistic worst-case approach for the height and time of the market crash....

We discuss when and why custom multi-factor risk models are warranted and give source code for computing some risk factors. Pension/mutual funds do not require customization but standardization. However, using standardized risk models in quant trading with much shorter holding horizons is...