Traditionally, keynote talks are delivered by individuals with significant influence on the society. Ministers or secretaries of governments, or presidents of large commercial corporations usually qualify. You also listen to the same people through the media. You want them to tell you what should be done. They quote from the ancient scriptures, which they interpret for you. They quote from mana...

Depending on length-of-stay, somewhere between 29 percent and 38 percent of long-term care insurance purchasers who use nursing homes would qualify for Medicaid payments if they did not own a policy. This is equivalent to between 13 percent and 17 percent of all policyholders. Owning such a policy would, however, reduce spend-down rates among policyholders by 39 percent. Thus, in the presence o...

We investigate an automobile supply chain where a manufacturer and a retailer serve a market with a fuel-effi cient automobile under a scrappage program by the government. The program awards a subsidy to each consumer who trades in his or her used automobile with a new fuel-effi cient automobile, if the manufacturer’s suggested retail price (MSRP) for the new one does not exceed a cutoff level....

In relativistic space-time, Bohmian theories can be formulated by introducing a privileged foliation of space-time. The introduction of such a foliation-as extra absolute space-time structure-would seem to imply a clear violation of Lorentz invariance, and thus a conflict with fundamental relativity. Here, we consider the possibility that, instead of positing it as extra structure, the required...

Today scientists are producing large volumes of data that they wish to explore and visualize. In this paper we describe a system that combines range-based queries with fast lookup to allow a scientist to quickly and efficiently ask “what if?” questions. Unique to our system is the ability to perform “cumulative queries” that work on both an intraand inter-time step basis. The results of such qu...