Robert Barsky and Jeffrey Miron (1989) revealed the seasonal cycle of the U.S. economy from 1948 to 1985 was characterized by a “bubble-like” expansion in the second and fourth quarters, a “crash-like” contraction in the first quarter, and a mild contraction in the third quarter. We...

The idea of stealing cycles has been hyped for some years, boasting unlimited potential by tapping the computational power of millions of under utilized PCs connected to the Internet. Despite a few spectacular success stories (e.g. SETI@HOME), cycle-stealing is today not a widely used...

The extensive context information collection abilities of ubiquitous computing environments represent a significant threat to user privacy. In this paper we address this threat by introducing a context information privacy mechanism. Our approach relies on context-dependent ownership definitions...