Rotating mandrel for assembly of inflatable devices Patent

Rotating, multisided mandrel for fabricating gored inflatable spacecraf

An experimental investigation of S-duct flow control using arrays of low-profile vortex generators

An experimental investigation was undertaken to measure the effect of various configurations of low-profile vortex generator arrays on the flow in a diffusing S-duct. Three parameters that characterize the vortex generator array were systematically varied to determine their effect: (1) the vortex generator height; (2) the streamwise location of the vortex generator array; and (3) the vortex generator spacing. Detailed measurements of total pressure at the duct exit, surface static pressure, and surface flow visualization were gathered for each vortex generator configuration. These results are reported here along with total pressure recovery and distortion coefficients determined from the experimental data. Each array of vortex generators tested improved total pressure recovery. The configuration employing the largest vortex generators was the most effective in reducing total pressure recovery. No configuration of vortex generators completely eliminated the flow separation that naturally occurs in the S-duct, however the extent of the separated flow region was reduced

Giant microwave photoresistance of two-dimensional electron gas

We measure microwave frequency (4-40 GHz) photoresistance at low magnetic field B, in high mobility 2D electron gas samples, excited by signals applied to a transmission line fabricated on the sample surface. Oscillatory photoresistance vs B is observed. For excitation at the cyclotron resonance frequency, we find an unprecedented, giant relative photoresistance (\Delta R)/R of up to 250 percent. The photoresistance is apparently proportional to the square root of applied power, and disappears as the temperature is increased.Comment: 4 pages, 3 figure

What Judges Tell Juries about Negligence: A Review of Pattern Jury Instructions

The purpose of this Article is to help answer the question how do judges convey the meaning of the negligence standard to juries? The partial answer suggested in this Article comes from collecting, categorizing, and reporting on the different states\u27 uniform or pattern jury instructions, a rich, largely untapped resource for legal scholars. The analysis of pattern negligence instructions suggests some plausible but tentative answers to other questions: how do juries understand the negligence instructions and how do they apply those instructions to the facts of individual cases? Finally, the Article discusses the relevance of those tentative answers to recurring problems in formulating an accurate descriptive theory of negligence liability

What Judges Tell Juries about Negligence: A Review of Pattern Jury Instructions

The purpose of this Article is to help answer the question how do judges convey the meaning of the negligence standard to juries? The partial answer suggested in this Article comes from collecting, categorizing, and reporting on the different states\u27 uniform or pattern jury instructions, a rich, largely untapped resource for legal scholars. The analysis of pattern negligence instructions suggests some plausible but tentative answers to other questions: how do juries understand the negligence instructions and how do they apply those instructions to the facts of individual cases? Finally, the Article discusses the relevance of those tentative answers to recurring problems in formulating an accurate descriptive theory of negligence liability