Statistics - Applications and Statistics - Computation
Abstract
Computerized touchscreen "Direct Recording Electronic" DRE voting systems have been used by over 1/3 of American voters in recent elections. In many places, insufficient DRE numbers in combination with lengthy ballots and high voter traffic have caused long lines and disenfranchised voters who left without voting. We have applied computer queuing simulation to the voting process and conclude that far more DREs, at great expense, would be needed to keep waiting times low. Alternatively, paper ballot-optical scan systems can be easily and economically scaled to prevent long lines and meet unexpected contingencies.
Nature Methods. March 2011, Vol. 8 Issue 3, p246, 6 p.
Subjects
Technology application, Fluorescence microscopy -- Technology application, Fluorescence microscopy -- Usage, Cell research -- Equipment and supplies, and Cell research -- Technology application
Abstract
The fluorescence microscope has developed into a versatile quantitative measuring device in cell biology. Advanced imaging techniques including four-dimensional imaging and fluorescence recovery after photobleaching (FRAP) can be used to [...] Quantitative microscopy relies on imaging of large cell numbers but is often hampered by time-consuming manual selection of specific cells. The 'Micropilot' software automatically detects cells of interest and launches complex imaging experiments including three-dimensional multicolor time-lapse or fluorescence recovery after photobleaching in live cells. In three independent experimental setups this allowed us to statistically analyze biological processes in detail and is thus a powerful tool for systems biology.
A power driven micrometer for engaging a workpiece surface has a rotatable screw and a motor for rotatingly driving the screw. The screw and motor are secured together for longitudinal travel as a unit, the screw being threadedly engaged and supported by a nut in the micrometer casing. A key precludes rotation of the motor relative to the casing while enabling longitudinal travel of the motor relative to the casing.
An optical mount enabling independent orthogonal adjustment of the angular position of an optical element comprises a cell adapted to receive an optical element and a base defining a chamber open on one side thereof for receipt of at least a part of the cell therein. The cell comprises a circumferentially extending partial spherical section and a pair of portions extending outwardly of the spherical section, and the base comprises an angular seat on the open side receiving and conforming to at least a portion of the spherical section of the cell and a pair of portions extending outwardly of the seat and facing the cell portions. A pair of independent adjustable means spaced from each other by substantially 90.degree. are secured to one of the portion pairs for movement therewith and have parts adapted to operatively abut against aligned sections of the other of the portion pairs. The parts of the adjustable means and the corresponding aligned sections of the other portion pair are biased towards each other. The cell is pivotable orthogonally about axes passing through the geometric center thereof, without cross-coupling by independent adjustment of the adjustable means.
Columbia Companion to the Twentieth-Century American Short Story; 2000, p117-121, 5p
Subjects
COLLEGE teachers, AMERICAN short stories, AMERICAN literature, and PROSE literature
Abstract
This article presents information related to the writer John Barth who was born in 1930 and grew up on the Eastern Shore of Maryland, a circumstance, he suggests in his autobiographical essay "Some Reasons Why," that is one of the roots of his often unconventional writing style. To date, Barth has published nine novels that range in mode from the nihilistic, "The Floating Opera," and "End of the Road," to the encyclopedic, "The Sot Weed Factor," and "Giles Goat-Boy." He has taught at Pennsylvania State University, the State University of New York at Buffalo, and since 1973, at Johns Hopkins University, where he is currently professor emeritus in the Writing Seminars.
