In a simulated aircraft navigation task, a fusion technique known as triangulation was used to improve the accuracy and onscreen availability of location information from two separate radars. Three experiments investigated whether the reduced cognitive processing required to extract information from the fused environment led to impoverished retention of visual-spatial information. Experienced p...

A method for preparation of the p-nitrophenyl-, N-hydroxysuccinimidyland pentafluorophenyl esters of isonicotinic and picolinic acids from the corresponding acids is reported.

4. Let P be a point inside triangle ABC. The lines AP, BP, and CP intersect the circumcircle of triangle ABC again at the points K , L , and M , respectively. The tangent to at C intersects the line AB at S. Suppose that SC = SP. Prove that MK = ML. 5. In each of six boxes B1, B2, B3, B4, B5, B6 there is initially one coin. There are two types of operation allowed: Type 1: Choose a nonempty box...

ALTHOUGH case reports of painful, red extremities date back at least to 1834,1 Mitchell first analyzed the symptoms in 1878 and suggested the term "erythromelalgia."2 During the ensuing 55 years, reparts of this entity appeared so sporadically that, in 1933, Lewis 3 considered that the term lacked precise definition and should be abandoned. In 1938, however, Smith and Allen4 reported a series o...

Doppler measurements of 51 Pegasi have been made from 1995 October through 1996 August, with a precision of 5 m s~1. We Ðnd a period of 4.231 days, a velocity amplitude of 56^ 1 m s~1, and a velocity curve that is essentially sinusoidal, all in excellent agreement with Mayor & Queloz. The only viable interpretation is a companion having minimum mass, m sin i \ 0.45 in a circular orbit of MJupit...

Are social movements responsible for their unfi nished agendas? Feminist successes in opening the professions to women paved the way for the emergence of the upper middle-class two-career household. These households sometimes hire domestic servants to accomplish their child care work. If, as I shall argue, this practice is unjust and furthers social inequality, then it poses a moral problem for...