Browsing FAS Scholarly Articles by Title
Now showing items 4242-4261 of 18292
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Dust Emission from the Perseus Molecular Cloud
(American Astronomical Society, 2008)Using far-infrared emission maps taken by IRAS and Spitzer and a near-infrared extinction map derived from 2MASS data, we have made dust temperature and column density maps of the Perseus molecular cloud. We show that the ... -
The Dust Emissivity Spectral Index in the Starless Core TMC-1C
(American Astronomical Society, 2009)In this paper, we present a dust emission map of the starless core TMC-1C taken at \(2100 \mu m\). Along with maps at 160, 450, 850, and 1200 μm, we study the dust emissivity spectral index from the (sub)millimeter spectral ... -
Dust Spectral Energy Distributions in the Era of Herschel and Planck: A Hierarchical Bayesian-Fitting Technique
(American Astronomical Society, 2012)We present a hierarchical Bayesian method for fitting infrared spectral energy distributions (SEDs) of dust emission to observed fluxes. Under the standard assumption of optically thin single temperature (T) sources, the ... -
Dwelling on the Negative: Incentivizing Effort in Peer Prediction
(Association for the Advancement of Artificial Intelligence, 2014)Agents are asked to rank two objects in a setting where effort is costly and agents differ in quality (which is the probability that they can identify the correct, ground truth, ranking). We study simple output-agreement ... -
Dynamic Chromatin Organization during Foregut Development Mediated by the Organ Selector Gene PHA-4/FoxA
(Public Library of Science (PLoS), 2010)Central regulators of cell fate, or selector genes, establish the identity of cells by direct regulation of large cohorts of genes. In Caenorhabditis elegans, foregut (or pharynx) identity relies on the FoxA transcription ... -
Dynamic compression of dense oxide (Gd3Ga5O12) from 0.4 to 2.6 TPa: Universal Hugoniot of fluid metals
(Nature Publishing Group, 2016)Materials at high pressures and temperatures are of great current interest for warm dense matter physics, planetary sciences, and inertial fusion energy research. Shock-compression equation-of-state data and optical ... -
Dynamic control of light emission faster than the lifetime limit using VO2 phase-change
(Nature Pub. Group, 2015)Modulation is a cornerstone of optical communication, and as such, governs the overall speed of data transmission. Currently, the two main strategies for modulating light are direct modulation of the excited emitter ... -
Dynamic control of liquid-core/liquid-cladding optical waveguides
(National Academy of Sciences, 2004)This report describes the manipulation of light in waveguides that comprise a liquid core and a liquid cladding (liq/liq waveguide). These waveguides are dynamic: Their structure and function depend on a continuous, laminar ... -
Dynamic daylight control system implementing thin cast arrays of polydimethylsiloxane-based millimeter-scale transparent louvers
(Elsevier BV, 2014)The deep building layouts typical in the U.S. have led to a nearly complete reliance on artificial lighting in standard office buildings. The development of daylight control systems that maximize the penetration and optimize ... -
Dynamic Equilibrium Mechanism for Surface Nanobubble Stabilization
(American Physical Society, 2008)Recent experiments have convincingly demonstrated the existence of surface nanobubbles on submerged hydrophobic surfaces. However, classical theory dictates that small gaseous bubbles quickly dissolve because their large ... -
Dynamic Factor Models
(Oxford University Press, 2011)This article surveys work on a class of models, dynamic factor models (DFMs), that has received considerable attention in the past decade because of their ability to model simultaneously and consistently data sets in which ... -
Dynamic ham-sandwich cuts in the plane
(Elsevier BV, 2009)We design efficient data structures for dynamically maintaining a ham-sandwich cut of two point sets in the plane subject to insertions and deletions of points in either set. A ham-sandwich cut is a line that simultaneously ... -
Dynamic Incentive Mechanisms
(Association for the Advancement of Artificial Intelligence, 2010-10-13)Much of AI is concerned with the design of intelligent agents. A complementary challenge is to understand how to design “rules of encounter” (Rosenschein and Zlotkin 1994) by which to promote simple, robust and beneficial ... -
Dynamic Logit with Choice Aversion
(The Econometric Society, 2015)We characterize a generalization of discounted logistic choice that incorporates a parameter to capture different views the agent might have about the costs and benefits of larger choice sets. The discounted logit model ... -
Dynamic Matching with a Fall-Back Option
(IOS Press, 2010)We study dynamic matching without money when one side of the market is dynamic with arrivals and departures and the other is static and agents have strict preferences over agents on the other side of the market. In enabling ... -
Dynamic Measurements of the Position, Orientation, and DNA Content of Individual Unlabeled Bacteriophages
(American Chemical Society (ACS), 2016-04-22)A complete understanding of the cellular pathways involved in viral infections will ultimately require a diverse arsenal of experimental techniques, including methods for tracking individual viruses and their interactions ... -
Dynamic Models for File Sizes and Double Pareto Distributions
(2001)In this paper, we introduce and analyze a new generative user model to explain the behavior of file size distributions. Our Recursive Forest File model combines ideas from recent work by Downey with ideas from recent work ... -
Dynamic Multiplier Ideal Sheaves and the Construction of Rational Curves in Fano Manifolds
(Uppsala Universitet. Acta Universitatis Upsaliensis, 2009) -
A Dynamic Network Approach for the Study of Human Phenotypes
(Public Library of Science, 2009)The use of networks to integrate different genetic, proteomic, and metabolic datasets has been proposed as a viable path toward elucidating the origins of specific diseases. Here we introduce a new phenotypic database ... -
Dynamic Nuclear Polarization in Double Quantum Dots
(American Physical Society, 2010)We theoretically investigate the controlled dynamic polarization of lattice nuclear spins in GaAs double quantum dots containing two electrons. Three regimes of long-term dynamics are identified, including the buildup of ...