Browsing FAS Scholarly Articles by Title
Now showing items 8870-8889 of 18292
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Likelihood-based analysis of causal effects of job-training programs using principal stratification
(Informa UK Limited, 2009)Government-sponsored job-training programs must be subject to evaluation to assess whether their effectiveness justifies their cost to the public. The evaluation usually focuses on employment and total earnings, although ... -
LILRB2 Interaction with HLA Class I Correlates with Control of HIV-1 Infection
(Public Library of Science, 2014)Natural progression of HIV-1 infection depends on genetic variation in the human major histocompatibility complex (MHC) class I locus, and the CD8+ T cell response is thought to be a primary mechanism of this effect. ... -
Limit Games and Limit Equilibria
(Elsevier, 1986)We provide a necessary and sufficient condition for equilibria of a game to arise as limits of ε-equilibria of games with smaller strategy spaces. As the smaller games are frequently more tractable, our result facilitates ... -
A Limit on the Polarized Anomalous Microwave Emission of Lynds 1622
(IOP Publishing, 2009)The dark cloud Lynds 1622 is one of a few specific sites in the Galaxy where, relative to observed free-free and vibrational dust emission, there is a clear excess of microwave emission. In order to constrain models for ... -
Limitations of inclusive fitness
(National Academy of Sciences, 2013)Until recently, inclusive fitness has been widely accepted as a general method to explain the evolution of social behavior. Affirming and expanding earlier criticism, we demonstrate that inclusive fitness is instead a ... -
Limited Attention and Income Distribution
(American Economic Association, 2008)Economists have long been interested in the idea that there is a direct circular relation between poverty and low productivity, and not just one that is mediated by market failures, usually in asset markets. The nutrition-based ... -
Limited Gene Flow in the Brooding Coral Favia fragum (Esper, 1797)
(Springer Science + Business Media, 2010)Understanding population connectivity in corals is particularly important as these organisms are increasingly threatened by abiotic and biotic factors. This study examined the population genetic structure of the brooding ... -
Limits from the Hubble Space Telescope on a Point Source in SN 1987A
(American Astronomical Society, 2005)We observed supernova 1987A ( SN 1987A) with the Space Telescope Imaging Spectrograph ( STIS) on the Hubble Space Telescope ( HST) in 1999 September and again with the Advanced Camera for Surveys ( ACS) on the HST in 2003 ... -
The limits of diversification when losses may be large.
(Elsevier, 2007)Recent results in value at risk analysis show that, for extremely heavy-tailed risks with unbounded distribution support, diversification may increase value at risk, and that generally it is difficult to construct an ... -
The limits of Tartary: Manchuria in imperial and national geographies
(Cambridge University Press (CUP), 2000)Mark C. Elliott examines the Qing geographical imagination as it related to the frontier region of Manchuria. He identifies the different approaches adopted by the Qing court toward this area and shows how each of these ... -
Limits on Active to Sterile Neutrino Oscillations from Disappearance Searches in the MINOS, Daya Bay, and Bugey-3 Experiments
(American Physical Society (APS), 2016)Searches for a light sterile neutrino have been performed independently by the MINOS and the Daya Bay experiments using the muon (anti)neutrino and electron antineutrino disappearance channels, respectively. In this Letter, ... -
Limits on Fluorescence Detected Circular Dichroism of Single Helicene Molecules
(American Chemical Society, 2009)Fluorescent imaging of single helicene molecules is applied to study the optical activity of chiral fluorophores. In contrast to the previous report by Hassey et al. (Science 2006, 314, 1437), the dissymmetry factors of ... -
Limits on Intergalactic Dust During Reionization
(American Astronomical Society, 2016)In this Letter, we constrain the dust-to-gas ratio in the intergalactic medium (IGM) at high redshifts. We employ models for dust in the local Universe to contrain the dust-to-gas ratio during the epoch of reionization at ... -
Limits on Isotropic Lorentz Violation in QED from Collider Physics
(American Institute of Physics, 2009)We consider the possibility that Lorentz violation can generate differences between the limiting velocities of light and charged matter. Such effects would lead to efficient vacuum Cherenkov radiation or rapid photon decay. ... -
Limits on Perceptual Encoding Can Be Predicted From Known Receptive Field Properties of Human Visual Cortex.
(American Psychological Association (APA), 2016)Human cognition has a limited capacity that is often attributed to the brain having finite cognitive resources, but the nature of these resources is usually not specified. Here, we show evidence that perceptual interference ... -
Limits on the Position Wander of Sgr A*
(American Astronomical Society, 2008)We present measurements with the Very Long Baseline Array of the variability in the centroid position of Sgr A* relative to a background quasar at 7 mm wavelength. We find an average centroid wander of 71 +/- 45 mu as for ... -
Limits to Resolution of CW STED Microscopy
(Academic Press (Elsevier BV), 2013)We report a systematic theoretical and experimental study of the limits to spatial resolution for stimulated emission depletion (STED) superresolution fluorescence microscopy using continuous wave (CW) laser beams. We ... -
Line Imaging of Orion KL at 865 μm with the Submillimeter Array
(IOP Publishing, 2005)We present the first submm (865 µm) imaging spectral line survey at one arcsecond resolution conducted with the Submillimeter Array toward Orion-KL. Within the two × two GHz bandpasses (lower and upper sidebands, 337.2–339.2GHz ... -
Lineage conversion induced by pluripotency factors involves transient passage through an iPS cell stage
(2016)Brief expression of pluripotency-associated factors such as Oct4, Klf4, Sox2 and c-Myc (OKSM), in combination with differentiation-inducing signals, was reported to trigger transdifferentiation of fibroblasts into other ... -
Lineage of origin in rhabdomyosarcoma informs pharmacological response
(Cold Spring Harbor Laboratory Press, 2014)Lineage or cell of origin of cancers is often unknown and thus is not a consideration in therapeutic approaches. Alveolar rhabdomyosarcoma (aRMS) is an aggressive childhood cancer for which the cell of origin remains ...