1,544 research outputs found
Noise in Electron Devices
Contains research objectives and reports on two research projects.Lincoln Laboratory (Purchase Order DDL-B187)Department of the ArmyDepartment of the NavyDepartment of the Air Force under Contract AF19(122)-45
Preemption and Medical Devices: The Courts Run Amok
Perhaps the most dramatic indication that the courts have shifted attitudes on health and safety matters comes from recent cases relating to medical devices and preemption. In this Article, we review the law relating to preemption, the Cipollone decision, the preemption provisions of the MDA, the regulations issued by the Food and Drug Administration ( FDA ) relating to preemption, and the impact of Cipollone on court interpretations of the MDA. Based on our review of the intended preemptive effect of the MDA, we conclude that it is unlikely that either Congress or the FDA intended for the MDA to preempt state tort claims. Moreover, even if preemption were justified for some tort claims-a proposition we reject-the courts have extended the rationale in Cipollone far beyond anything that the Supreme Court intended in its ruling. In short, we maintain that the courts have run amok in their rulings on preemption
Good Faith: A New Look At An Old Doctrine
In this article we sketch the basic contours of the contractual policing devices that apply to special relationships and to arm\u27s length transactions. We then explicate in greater detail the duty of good faith under general contract law and the Uniform Commercial Code. Finally, we explore some strategies for shortening arm\u27s length transactions through consensual extensions of the duty of good faith
Rainbows in the Grass. II. Arbitrary Diagonal Incidence
We consider external reflection rainbow caustic,,; due to the reflection of light from a pendant droplet where the light rays are at an arbitrary angle with respect to the horizontal. We compare this theory to observation of glare spots from, pendant drops on grass; we also consider the potential application of this theory to the determination of liquid surface tension. (C) 2008 Optical Society of Americ
Rainbows in the Grass. I. External Reflection Rainbows from Pendant Droplets
In the mid-morning on a sunny day one can sometimes see glare spots associated with uncolored rainbow (i.e., fold) caustics due to the sunlight reflected from the surface of dew or guttation drops. We show that these dewdrop reflection rainbows are due to places on the droplet (i.e., from an inflection circle ) where its Gaussian curvature becomes zero. We work out the theory of such caustics with horizontally incident light and present a comparison of the theory to measurements made in the laboratory. (C) 2008 Optical Society of Americ
Effect of lisdexamfetamine dimesylate on sleep in adults with attention-deficit/hyperactivity disorder
<p>Abstract</p> <p>Background</p> <p>Sleep problems are common in adults with attention-deficit/hyperactivity disorder (ADHD). This analysis aimed to evaluate the impact of lisdexamfetamine dimesylate (LDX) on sleep quality in adults with ADHD.</p> <p>Methods</p> <p>This 4-week, phase 3, double-blind, forced-dose escalation study of adults aged 18 to 55 years with ADHD randomized participants to receive placebo (n = 62), or 30 (n = 119), 50 (n = 117), or 70 (n = 122) mg/d LDX, taken once a day in the morning. The self-rated Pittsburgh Sleep Quality Index (PSQI) was administered at baseline and at week 4 to assess sleep quality. The PSQI global score assesses 7 sleep components (subjective sleep quality, sleep latency, sleep duration, habitual sleep efficiency, sleep disturbances, use of sleeping medications, and daytime dysfunction) each scored from 0 (no difficulty) to 3 (severe difficulty).</p> <p>Results</p> <p>The mean baseline PSQI global score was 5.8 for LDX and 6.3 for placebo (<it>P </it>= .19) indicating poor overall sleep quality. At endpoint, least squares (LS) mean change from baseline was -0.8 for LDX vs -0.5 for placebo (<it>P </it>= .33). The daytime functioning component showed significant improvement in LS mean change at endpoint for LDX compared with placebo (LDX -0.4 vs placebo 0.0, <it>P </it>= .0001). LS mean changes for the other 6 PSQI components did not significantly differ from placebo. Sleep-related treatment-emergent adverse events with an incidence ≥2% in the active treatment and placebo groups, respectively, were insomnia (19.3% and 4.8%), initial insomnia (5.0% and 3.2%), middle insomnia (3.6% and 0%), sleep disorder (0.6% and 3.2%), somnolence (0.3% and 3.2%), and fatigue (4.7% and 4.8%), and were generally mild or moderate in severity.</p> <p>Conclusion</p> <p>For most subjects, LDX was not associated with an overall worsening of sleep quality and significantly improved daytime functioning in adults with ADHD.</p> <p>Trial Registration</p> <p>clinicaltrials.gov Identifier: NCT00334880</p
Noise in Electron Devices
Contains reports on three research projects.Lincoln Laboratory (Purchase Order DDL-B187)Department of the ArmyDepartment of the NavyDepartment of the Air Force under Contract AF19(122)-45
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