Browsing FAS Scholarly Articles by Title
Now showing items 5155-5174 of 18296
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Estimating the Probability of Events that Have Never Occurred: When is Your Vote Decisive?
(American Statistical Association, 1998)Researchers sometimes argue that statisticians have little to contribute when few realizations of the process being estimated are observed. We show that this argument is incorrect even in the extreme situation of estimating ... -
Estimating the Spin of Stellar-Mass Black Holes by Spectral Fitting of the X-Ray Continuum
(American Astronomical Society, 2005)We fit X-ray spectral data in the thermal-dominant, or high-soft, state of two dynamically confirmed black holes, GRO J1655-40 and 4U 1543-47, and estimate the dimensionless spin parameters a* a/M of the two holes. For ... -
Estimating the Spins of Stellar-Mass Black Holes by Fitting Their Continuum Spectra
(AIP Publishing, 2008)We have used the Novikov‐Thorne thin disk model to fit the continuum X‐ray spectra of three transient black hole X‐ray binaries in the thermal state. From the fits we estimate the dimensionless spin parameters of the black ... -
Estimating the timing of early eukaryotic diversification with multigene molecular clocks
(Proceedings of the National Academy of Sciences, 2011)Although macroscopic plants, animals, and fungi are the most familiar eukaryotes, the bulk of eukaryotic diversity is microbial. Elucidating the timing of diversification among the more than 70 lineages is key to understanding ... -
Estimating Trade Flows: Trading Partners and Trading Volumes
(MIT Press, 2008)We develop a simple model of international trade with heterogeneous firms that is consistent with a number of stylized features of the data. In particular, the model predicts positive as well as zero trade flows across ... -
Estimating turning points using large data sets
(Elsevier BV, 2014)Dating business cycles entails ascertaining economy-wide turning points. Broadly speaking, there are two approaches in the literature. The first approach, which dates to Burns and Mitchell (1946), is to identify turning ... -
Estimation of 3D Faces and Illumination from Single Photographs Using a Bilineaur Illumination Model
(Eurographics Association, 2005)3D Face modeling is still one of the biggest challenges in computer graphics. In this paper we present a novel framework that acquires the 3D shape, texture, pose and illumination of a face from a single photograph. ... -
The Estimation of Causal Effects from Observational Data
(Annual Reviews, 1999)When experimental designs are infeasible, researchers must resort to the use of observational data from surveys, censuses, and administrative records. Because assignment to the independent variables of observational data ... -
Estimation of Net Ecosystem Carbon Exchange for the Conterminous United States by Combining MODIS and AmeriFlux Data
(Elsevier, 2008)Eddy covariance flux towers provide continuous measurements of net ecosystem carbon exchange (NEE) for a wide range of climate and biome types. However, these measurements only represent the carbon fluxes at the scale of ... -
Estimation of Spectral Power Laws in Time-Uncertain Series of Data with Application to the GISP2 \(δ^{18}\)O Record
(American Geophysical Union, 2011)Errors in the timing assigned to observations degrade estimates of the power spectrum in a complicated and nonlocal fashion. It is clear that timing errors will smear concentrations of spectral energy across a wide band ... -
Estradiol, estrogen receptor alpha, and osteogenic responses to mechanical loading
(John Wiley & Sons, 2005)Despite evidence that mechanical loads can induce diaphyseal bone growth, there is little consensus about how, and to what extent, strain affects human skeletal phenotype. This project tests a mechanism of mechanotransduction ... -
The ESX System in Bacillus subtilis Mediates Protein Secretion
(Public Library of Science, 2014)Esat-6 protein secretion systems (ESX or Ess) are required for the virulence of several human pathogens, most notably Mycobacterium tuberculosis and Staphylococcus aureus. These secretion systems are defined by a conserved ... -
Etching of Cr tips for scanning tunneling microscopy of cleavable oxides
(AIP Publishing, 2017)We report a detailed three-step roadmap for the fabrication and characterization of bulk Cr tips for spin-polarized scanning tunneling microscopy. Our strategy uniquely circumvents the need for ultra-high vacuum preparation ... -
Etching of Graphene Devices with a Helium Ion Beam
(American Chemical Society, 2009)We report on the etching of graphene devices with a helium ion beam, including in situ electrical measurement during lithography. The etching process can be used to nanostructure and electrically isolate different regions ... -
Eternal Values, Evolving Values, and the Value of the Self
(Princeton University Press, 2015-12-31) -
Ethics and Economics of Medical Supplies in the COVID-19 Pandemic
(European Scientific Institute, ESI, 2021-09-13)Background: The distribution of healthcare resources across local and global communities has triggered alarms throughout the COVID-19 pandemic. Injustice and inefficiency in the transfer of lifesaving medical supplies are ... -
The Ethics of Ethnomusicology in a Cosmopolitan Age
(Cambridge University Press, 2013) -
The Ethics of Uncle Tom's Children
(University of Chicago Press, 2012) -
Ethiopian Lives and Liturgies
(Harvard Divinity School, 2013) -
Ethiopian Musical Invention in Diaspora: A Tale of Three Musicians
(University of Toronto Press, 2006)This essay, based on ethnographic interviews and observation, discusses the lives and careers of three prominent Ethiopian musicians from sacred, folkloric, and popular musical domains (Moges Seyoum, Tesfaye Lemma, and ...