Browsing Faculty of Arts and Sciences by Title
Now showing items 5632-5651 of 24540
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Dueling biological and social contagions
(Springer Nature, 2017)Numerous models explore how a wide variety of biological and social phenomena spread in social networks. However, these models implicitly assume that the spread of one phenomenon is not affected by the spread of another. ... -
Dumbbell Defects in FeSe Films: A Scanning Tunneling Microscopy and First-Principles Investigation
(American Chemical Society (ACS), 2016)The properties of iron-based superconductors (Fe-SCs) can be varied dramatically with the introduction of dopants and atomic defects. As a pressing example, FeSe, parent phase of the highest-Tc Fe-SC, exhibits prevalent ... -
Durable Effects of Concentrated Disadvantage on Verbal Ability among African-American Children
(Proceedings of the National Academy of Sciences, 2008)Disparities in verbal ability, a major predictor of later life outcomes, have generated widespread debate, but few studies have been able to isolate neighborhood-level causes in a developmentally and ecologically appropriate ... -
Duration of Recovery and Susceptibility to Criticism-Induced Information-Processing Biases in Major Depression
(2013-02-22)Major depression is a highly prevalent disorder that affects millions of individuals worldwide each year. Theorists such as Aaron T. Beck (1967; 1976) revolutionized how depression is understood by proposing that cognitive ... -
Dust and Hco+gas in the Star-forming Core W3-se
(American Astronomical Society, 2010)We report new results from recent Combined Array for Research in Millimeter-wave Astronomy (CARMA) observations of both continuum and HCO+(1-0) line emission at lambda 3.4 mm from W3-SE, a molecular core of intermediate ... -
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 in Large Optical Surveys
(2012-08-03)We present results studying the distribution and properties of the diffuse dust in the Milky Way Galaxy using large optical surveys—specifically, the Sloan Digital Sky Survey (SDSS) and the Panoramic Survey Telescope and ... -
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 ... -
Duties of Rescue: a Moderate Account
(2013-10-18)This dissertation clarifies a challenge present in Peter Singer's famine-relief argument and offers a new account of our moral duties of rescue. The challenge, in essence, is to differentiate two classes of idealized ... -
Dürer Endures: The Prospective Aspect of a Drawing on Blue Paper
(2023-05-10)In the autumn of 1506, Albrecht Dürer drew two young faces on blue paper. 92 years later, in 1598, Aegidius Sadeler II, a talented engraver hailing from Antwerp and living in Prague, set out the very same drawing (now split ... -
Dwarfing expectations: The rapid expansion of the transiting brown dwarf population in the era of the TESS mission
(2021-05-13)This thesis presents an analysis of transiting brown dwarf (BD) systems and examines their effectiveness as tests to substellar evolutionary models. The radius, mass, and age of transiting BD systems are the parameters ... -
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 ... -
Dying of Encouragement: From Pitch to Production in Hollywood
(2013-10-08)Social scientists have long held that the media has a profound effect on modern societies. However, the cultural production of motion pictures and television shows has largely been neglected as a topic of inquiry. The ... -
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 Collision-Free Motion Planning for Robotic Manipulation using Graphs of Convex Sets
(2023-05-12)Enabling robots to generates physically feasible and collision-frees trajectories is a fundamental problem in robotics. Current solutions take one of two approaches, using sampling based motion planners to probabilistically ... -
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 ...