33,272 research outputs found
Fluidic Ignition Detection
Ignition sensor, utilizing fluidic oscillator device and its ability to react to flow system's molecular weight and temperature changes, detects propellant ignition. Commercial applications include fields of fire protection equipment and fluidics
Interest Arbitration, Outcomes, and the Incentive to Bargain
This study develops a model of bargaining that demonstrates that an interest arbitration procedure will encourage negotiated settlements to the extent that risk aversion dominates the preferences of the parties and there is uncertainty regarding the arbitrator\u27s behavior. The authors conclude that it is likely that risk aversion does dominate preferences, but the evidence is not conclusive. They also argue that uncertainty may be reduced over time for various reasons, leading to increased use of arbitration and a convergence between the terms of negotiated and arbitrated agreements
Linking Light Scalar Modes with A Small Positive Cosmological Constant in String Theory
Based on the studies in Type IIB string theory phenomenology, we conjecture
that a good fraction of the meta-stable de Sitter vacua in the cosmic stringy
landscape tend to have a very small cosmological constant when
compared to either the string scale or the Planck scale , i.e.,
. These low lying de Sitter vacua tend to be
accompanied by very light scalar bosons/axions. Here we illustrate this
phenomenon with the bosonic mass spectra in a set of Type IIB string theory
flux compactification models. We conjecture that small with light
bosons is generic among de Sitter solutions in string theory; that is, the
smallness of and the existence of very light bosons (may be even the
Higgs boson) are results of the statistical preference for such vacua in the
landscape. We also discuss a scalar field model to illustrate
how this statistical preference for a small remains when quantum loop
corrections are included, thus bypassing the radiative instability problem.Comment: 35 pages, 7 figures; added subsection: Finite Temperature and Phase
Transitio
An update on the diagnosis and treatment of early Lyme Disease: Focusing on the bull\u27s eye, you may miss the mark
To confidently diagnose and treat Lyme disease, the clinician must first understand the natural history of this disease, especially its protean early manifestations. Emergency physicians, primary care physicians, and other providers need to be vigilant in terms of the timely recognition of erythema migrans (EM), the unique marker of early localized stage 1 disease. The classic EM, originally described as a slowly expanding bull\u27s eye lesion, is now recognized to be present in only the minority of cases (9%); the dominant morphologic lesion of EM is now recognized to be the diffusely homogenous red plaque or patch, which occurs in over 50% of cases. This update will define the current morphologic features of early Lyme disease, the indication for serologic studies, and the most recent treatment guidelines, including therapeutic pitfalls
Flight-test nacelles
Design modifications for acoustically absorbing flight test nacelles of DC-8 turbofan engin
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