Recently, sharing the radio access network (RAN) has become an important issue for 3G and beyond mobile wireless operators. In addition to user and service considerations, there are economic and technical advantages to 3G and beyond shared networks. This is driving optimizations in the deployment and development of national 3G and 4G rollouts. However, shared 3G and 4G networks exhibit many of ...

Because of the heterogeneity of human tumors, cancer patient populations are usually composed of multiple subgroups with different molecular and/or histologic characteristics. In screening new anticancer agents, there might be a scientific rationale to expect some degree of similarity in clinical activity across the subgroups. This poses a challenge to the design of phase II trials assessing cl...

Perfect capital markets require linear budget constraints, without credit rationing creating any tight borrowing constraints before the end of agents’ economic lifetimes. Yet lifetime linear budget constraints are totally unenforceable. This paper considers what allocations can be enforced through monitoring in a simple two period economy when agents have private information regarding their end...

In this paper, I present two models that describe the relationship between stock option incidence and stock price volatility. First, I present an industry-clockspeed human resources (HR) model. Firms in industries where products obsolesce quickly will grant stock options to motivate employees to exert high e.ort and shorten the product development cycle, which increases volatility of .rm perfor...

Because of the heterogeneity of human tumors, cancer patient populations are usually composed of multiple subgroups with different molecular and/or histologic characteristics. In screening new anticancer agents, there might be a scientific rationale to expect some degree of similarity in clinical activity across the subgroups. This poses a challenge to the design of phase II trials assessing cl...

The university’s libraries have always had too many resources to be found by readers so the value of many books has been reduced for missing prescription. Although there have already been a lot of book recommendation researches in university library, few studies have been carried out in respect of the fact how to recommend the new-come books. New books should be more valuable to be recommended,...