Browsing FAS Scholarly Articles by Title
Now showing items 4377-4396 of 18292
-
Early Urban Development in the Near East
(American Association for the Advancement of Science, 2007) -
Early Warning Signals of Ecological Transitions: Methods for Spatial Patterns
(Public Library of Science, 2014)A number of ecosystems can exhibit abrupt shifts between alternative stable states. Because of their important ecological and economic consequences, recent research has focused on devising early warning signals for ... -
Early- And Late-time Observations of Sn 2008ha: Additional Constraints for the Progenitor and Explosion
(American Astronomical Society, 2010) -
Early-Life Malaria Exposure and Adult Outcomes: Evidence from Malaria Eradication in India
(American Economic Association, 2010)We examine the effects of exposure to malaria in early childhood on educational attainment and economic status in adulthood by exploiting geographic variation in malaria prevalence in India prior to a nationwide eradication ... -
Early-Type Galaxies in the Sloan Digital Sky Survey. I. The Sample
(2003)A sample of nearly 9000 early-type galaxies, in the redshift range 0.01 ≤ z ≤ 0.3, was selected from the Sloan Digital Sky Survey (SDSS) using morphological and spectral criteria. This paper describes how the sample was ... -
Early-type Galaxies in the Sloan Digital Sky Survey. II. Correlations between Observables
(IOP Publishing, 2003)A magnitude-limited sample of nearly 9000 early-type galaxies, in the redshift range 0.01 ≤ z ≤ 0.3, was selected from the Sloan Digital Sky Survey using morphological and spectral criteria. The sample was used to study ... -
Early-Type Galaxies in the Sloan Digital Sky Survey. III. The Fundamental Plane
(IOP Publishing, 2003)A magnitude-limited sample of nearly 9000 early-type galaxies in the redshift range 0.01 ≤ z ≤ 0.3 was selected from the Sloan Digital Sky Survey (SDSS) using morphological and spectral criteria. The fundamental plane ... -
Early-Type Galaxies in the Sloan Digital Sky Survey. IV. Colors and Chemical Evolution
(IOP Publishing, 2003)The colors and chemical abundances of early-type galaxies at redshifts z < 0.3 are studied using a sample of nearly 9000 galaxies, selected from the Sloan Digital Sky Survey using morphological and spectral criteria. In ... -
Earth rotation changes since ?500 CE driven by ice mass variations
(Elsevier BV, 2016)We predict the perturbation to the Earth's length-of-day (LOD) over the Common Era using a recently derived estimate of global sea-level change for this time period. We use this estimate to derive a time series of “clock ... -
Earth's gravitational field: seismic tomography resolves the enigma of the Laurentian anomaly
(American Geophysical Union, 1992) -
An Earth-sized planet with an Earth-like density
(Springer Nature, 2013)Recent analyses1–4 of data from the NASA Kepler spacecraft5 have established that planets with radii within 25 per cent of Earth’s (R⊕) are commonplace throughout the Galaxy, orbiting at least 16.5 per cent of Sun-like ... -
Earthquake Cycle Deformation in the Tibetan Plateau with a Weak Mid-Crustal Layer
(Wiley-Blackwell, 2013)Geodetic observations of interseismic deformation across the Tibetan plateau contain information about both tectonic and earthquake cycle processes. Time-variations in surface velocities between large earthquakes are ... -
Earthquake Ruptures with Thermal Weakening and the Operation of Major Faults at Low Overall Stress Levels
(American Geophysical Union, 2009)We model ruptures on faults that weaken in response to flash heating of microscopic asperity contacts (within a rate-and-state framework) and thermal pressurization of pore fluid. These are arguably the primary weakening ... -
Earthquake Slip Between Dissimilar Poroelastic Materials
(American Geophysical Union, 2008)A mismatch of elastic properties across a fault induces normal stress changes during spatially nonuniform in-plane slip. Recently, Rudnicki and Rice showed that similar effects follow from a mismatch of poroelastic properties ... -
Earth’s Multi-Scale Topographic Response to Global Mantle Flow
(Springer Science and Business Media LLC, 2019-09-16)Earth’s surface topography is a direct physical expression of our planet’s dynamics. Most is isostatic, controlled by thickness and density variations within the crust and lithosphere, but a substantial proportion arises ... -
Earth’s Polar Night Boundary Layer as an Analog for Dark Side Inversions on Synchronously Rotating Terrestrial Exoplanets
(American Astronomical Society, 2020-04-03)A key factor in determining the potential habitability of synchronously rotating planets is the strength of the atmospheric boundary layer inversion between the dark side surface and the free atmosphere. Here we analyze ... -
An Easier Way to Calibrate
(Elsevier, 1999)Forecasts are said to be calibrated if the frequency predictions are approximately correct. This is a refinement of an idea first introduced by David Blackwell in 1955. We show that “<i>K</i>-initialized myopic strategies” ... -
Easily searched encodings for number partitioning
(Springer, 1996)Can stochastic search algorithms outperform existing deterministic heuristics for the NP-hard problem Number Partitioning if given a sufficient, but practically realizable amount of time? In a thorough empirical investigation ... -
Eastern Asian emissions of anthropogenic halocarbons deduced from aircraft concentration data
(Wiley-Blackwell, 2003)The Montreal Protocol restricts production of ozone-depleting halocarbons worldwide. Enforcement of the protocol has relied mainly on annual government statistics of production and consumption of these compounds (bottom-up ... -
Easy Freshness with Pequod Cache Joins
(USENIX, 2014)Pequod is a distributed application-level key-value cache that supports declaratively defined, incrementally maintained, dynamic, partially-materialized views. These views, which we call cache joins, can simplify application ...