Understanding the Char-Bending Technique in Shipwreck Planks

Fractional Planks

In 1950 Bang proposed a conjecture which became known as “the plank conjecture”: Suppose that a convex set S contained in the unit cube of <n and touching all its sides is covered by planks. (A plank is a set of the form {(x1, . . . , xn): xj ∈ I } for some j ∈ {1, . . . , n} and a measurable subset I of [0, 1]. Its width is defined as |I |.) Then the sum of the widths of the planks is at least...

The shipwreck of the singular.

In 1962, Louis Lasagna was one of the central figures in the creation of our current drug regulation systems. His influence on the practice of modern medicine, through a series of unanticipated consequences of these systems, has been profound. In the 1960s, he was one of the most progressive thinkers in medicine. By the 1980s, he had apparently become one of the most reactionary. This article a...

Target definition for shipwreck hunting

The research described in the present article was implemented to define the locations of two World War II shipwrecks, the German raider Kormoran, and the Australian light cruiser HMAS Sydney. The paper describes the long and complex trail that led through inefficient oceanographic prediction to ambiguous historical prediction involving a single report and on to precise cognitive prediction base...

trichloroanisole in aqueous samples from cork planks

Survival after Shipwreck