Example An operating system is a widely-used example of a complex concurrent system that manages many different types of applications and hardware. For instance, it coordinates and demultiplexes the communication between standard Internet networking applications, such as telnet, ftp, smtp, dns, and inetd, and hardware I/O devices, such as network interfaces, disk controllers, end-user terminals...

A standard view of Southern history identifies the Civil War and emancipation as a key stage in the transition to capitalism or “modernization”. This interpretation is closely associated with the work of Charles and Mary Beard, and was epitomized in C. Vann Woodward’s Origins of the New South, a survey of postbellum Southern history that remains highly influential today, more than half a centur...

The title of my lecture, "Philosophical Ambiguities in Ostensibly Unambiguous Times: The Moral Evaluation of Terrorism," is meant to signal, among other things, a certain apprehension I feel about addressing this subject in the aftermath of September 11. I can imagine some in the audience becoming impatient with what they are about to hear, impatient, that is, with philosophical reflection on t...

Australia’s National Health and Hospital Reform Commissions e-health agenda has necessitated an improvement in our understanding of the factors impacting the intention to adopt integrated information systems. This imperative is echoed by OECD health ministers and forms the focus for the ministerial meeting schedule for October 2010, ‘Health Priorities in the Aftermath of the Crisis’. This paper...

We present deep H i observations of the compact high-velocity cloud HVC125+41–207 using the 100m Effelsberg telescope. Our goal was in particular to study the warm neutral medium (WNM) in detail. The Effelsberg data reveals a two phase core/halo structure – one component with a velocity width of FWHM ≈ 5 km s (Westerbork data show FWHM ≈ 2 km s, Braun & Burton 2000) and one with FWHM ≈ 18 km s....

The protests that swept the Arab Middle East and North Africa (MENA) are expected to have influenced two key civic attitudes fundamental to well-functioning democracies: trust and tolerance. However, systematic comparative assessments of the general patterns and particularities in this region are rare. This contribution theorizes the uprisings’ impact and presents new society-level measurements...

Consider the minimum number f(m,n) of zeroes in a 2m×2n (0, 1)-matrixM that contains no m×n submatrix of ones. This special case of the well-known Zarankiewicz problem was studied by Griggs and Ouyang, who showed, for m ≤ n, that 2n+m+1 ≤ f(m,n) ≤ 2n + 2m − gcd(m,n) + 1. The lower bound is sharp when m is fixed for all large n. They proposed determining limm→∞{f(m,m+ 1)/m}. In this paper, we sh...