The high-school timetabling problem regards the weekly scheduling for all the lectures of a high school. The problem consists in assigning lectures to periods in such a way that no teacher (or class) is involved in more than one lecture at a time, and other side constraints are satissed. The problem is NP-complete and is usually tackled using heuristic methods. This paper describes a solution a...

In a country where only two political parties — the Democrats and Republicans — have dominated electoral politics since the Civil War, any electoral headway by a third party or candidate is a noteworthy event. Setting aside Teddy Roosevelt’s Bull Moose Party effort, Perot’s 18.9% of the popular vote in 1992 was the largest third party popular vote since the Civil War. By running again in 1996 a...

SplicePort is a web-based tool for splice-site analysis that allows the user to make splice-site predictions for submitted sequences. In addition, the user can also browse the rich catalog of features that underlies these predictions, and which we have found capable of providing high classification accuracy on human splice sites. Feature selection is optimized for human splice sites, but the se...

On October 18, 1996, hundreds of people, including many mathematicians, gathered at Kerepesi Cemetery in Budapest to pay their last respects to Paul Erdős. If there was one theme suggested by the farewell orations, it was that the world of mathematics had lost a legend, one of its great representatives. On October 21, 1996, in accordance with his last wishes, Paul Erdős’ ashes were buried in hi...

In increasingly many logic programming systems, the Prolog left to right selection rule has been replaced with dynamic selection rules, that select an atom of a query among those satisfying suitable conditions. These conditions describe the form of the arguments of every program predicate, by means of a so-called delay declaration. Dynamic selection rules introduce the possibility of deadlock, ...

Stability of U.S. Consumption Expenditure Patterns: 1996 1999 Lester D. Taylor University of Arizona A cornerstone of macroeconomic analysis since publication of Keynes’s General Theory in 1936 has been a strong belief in a stable aggregate consumption function. At a micro level, there has been an equally strong belief in invariant individual tastes and preferences. The usual approach in testin...

Daniel Shanks was born on January 17, 1917, in the city of Chicago, where he was raised and where in 1937 he received his B.S. in physics from the University of Chicago. In 1940 he worked as a physicist at the Aberdeen Proving Grounds, moving the following year to the position of physicist at the Naval Ordinance Laboratory, a position he retained until 1950. In 1951 his post at the NOL changed ...