We measured the response to breathing a mixture of 80% helium and 20% oxygen (He) during a maximum expiratory flow-volume (MEFV) maneuver in 66 nonsmokers and 48 smokers, aged 17-67. All of the subjects studied had (forced expiratory volume in 1 s/forced vital capacity [FEV(1.0)/FVC]) x 100 of greater than 70%. While the flow rates of the smokers were within +/-2 SD of those of the nonsmokers a...

Recent protest movements brought attention to the one percent, a segment of the population that is critical to understanding inequality and social mobility but that attracts relatively little research attention. In this article, I survey current research on the one percent in the United States. I distinguish income from wealth and show that both are very concentrated but that the concentration ...

Four containerized deciduous ornamental shrubs [deutzia (Deutzia gracilis L.), silverleaf dogwood (Cornus nlba 'Elegantissima'), red-osier dogwood (Cornus sericea L.), and ninebark (Physocarpirs optilifolius L.)] were grown during each of two separate growing seasons using 12 different immature (nonaged) composts as media (year one, 12 weeks from start of windrowing; year two, 16-weeks) and als...

An extention of the alpha-beta tree priming strategy to game trees with "probability" nodes, whose values are defined as the (possibly weighted) average of their successors' values, is developed. These '*-minhnax' trees pertain to games involving chance but no concealed infornzation. Based upon our search strategy, )re formulate and then analyze several algorithnzs for *-minimax trees. An initi...

Increasing system and algorithmic complexity, combined with a growing number of tuanble application parameters, pose significant challenges for analytical performance modeling. This report outlines a series of robust techniques that enable efficient parameter space exploration based on empirical statistical modeling. In particular, this report applies statistical techniques such as clustering, ...

arlier this year, two L6-year-oIds E l injured in a drunk-driving accident ; near their high school were taken to Scripps .Mercy Hospital in San Diegoone by Mercy Air, the hospital's helicopter service, and the other by ambulance. Once inside the trauma room, physicians and nurses tried valiantly to save their lives. When the victims parents arrived at Mercy, they experienced the tragedy of sud...

Expanded aluminum honeycomb with a nominal cell width of 0. 156 inch was used to fabricate a 24-inch-diameter unzoned lens for operation at 5 5 GHz. The lens exhibits good focusing properties but its efficiency of only 18 percent reflects significant random phase errors. These errors are shown to result mainly from variations of the cell width. From the me sured radiation characteristics the av...

To determine if the hemodynamic response to vasodilator therapy can be assessed noninvasively by pulsed Doppler velocimetry, we compared the hemodynamic changes after treatment to changes in Doppler aortic blood flow measurements. The relationship between the absolute values and percent changes of invasively measured systemic vascular resistance (SVR) and stroke volume (SV) and Doppler-measured...