It is well known that some XML elements correspond to objects (in the sense of object-orientation) and others do not. The question we consider in this paper is what benefits we can derive from paying attention to such object semantics, particularly for the problem of keyword queries. Keyword queries against XML data have been studied extensively in recent years, with several lowest-common-ances...

Rescue robotics is an important steppingstone in the scientific challenge to create autonomous systems. There is a significant market for rescue robots, which has unique features that allow a fruitful combination of application oriented developments and basic research. Unlike other markets for advanced robotics systems like service robots, the rescue robotics domain benefits from the fact that ...

over the past 25 years, autonomy has been a popular focus for discussion and increasingly influential in foreign language educa- tion. most research is concentrated on learner autonomy, while teacher autonomy has been seriously neglected. recently, however, researchers and experts have realized that to enhance learner autonomy, we must enhance teacher autonomy (e.g., benson 2000; little 1995; l...