The National Plans (The Ten-Foot, Five-Foot, Twenty-Five-Inch, and Six-Inch Scales)

The Ruling and Performance of a Ten-Inch Diffraction Grating.

Ten Problems About Twenty- Five Horses

It is understood that each horse always runs the distance in the same time and the horses have distinct speeds. You have no stopwatch, but can make deductions from the finishing order in the races. When deciding which horses to race, information obtained from previous races may be used. These conditions apply for all problems we present here. As often happens, the problem leads to many interest...

Dracunculiasis eradication: the final inch.

This report summarizes the status of the Dracunculiasis Eradication Program as of early 2005. Nine of the 20 countries that were endemic for this disease when the program began have already interrupted transmission, Asia is free of Guinea worm, and five of the remaining disease-endemic countries reported less than 50 cases each in 2004. Ghana and Sudan each reported 45% of the 16,026 cases in 2...

Pattern transfer fidelity of nanoimprint lithography on six-inch wafers

We studied the pattern transfer fidelity of nanoimprint lithography (NIL) by patterning sub-micron MESFET gates on six-inch wafers. The critical dimensions (CD) of the gate patterns on the mould, imprinted in resist, as well as after oxygen reactive ion etching (RIE) and metal lift-off were measured, separately, using an ultrahigh-resolution scanning electron microscope. Comparison of the measu...

The First Twenty-Five Years

At the initial meeting of the AES, held in November 1927, among the resolutions passed, two were of particular significance. They were: 1. That the object of this Society be to promote the study and discussion of epidemiological problems. 2. That membership shall consist only of those active and interested in the study of epidemiology. Although the by-laws did not specify that unfinished work c...