47 research outputs found
Internet Daters’ Body Type Preferences: Race–Ethnic and Gender Differences
Employing a United States sample of 5,810 Yahoo heterosexual internet dating profiles, this study finds race–ethnicity and gender influence body type preferences for dates, with men and whites significantly more likely than women and non-whites to have such preferences. White males are more likely than non-white men to prefer to date thin and toned women, while African-American and Latino men are significantly more likely than white men to prefer female dates with thick or large bodies. Compatible with previous research showing non-whites have greater body satisfaction and are less influenced by mainstream media than whites, our findings suggest Latinos and African Americans negotiate dominant white idealizations of thin female bodies with their own cultures’ greater acceptance of larger body types
Foreground modelling via Gaussian process regression: an application to HERA data
The key challenge in the observation of the redshifted 21-cm signal from cosmic reionization
is its separation from the much brighter foreground emission. Such separation relies on the
different spectral properties of the two components, although, in real life, the foreground
intrinsic spectrum is often corrupted by the instrumental response, inducing systematic effects
that can further jeopardize the measurement of the 21-cm signal. In this paper, we use Gaussian
Process Regression to model both foreground emission and instrumental systematics in ∼2 h
of data from the Hydrogen Epoch of Reionization Array. We find that a simple co-variance
model with three components matches the data well, giving a residual power spectrum with
white noise properties. These consist of an ‘intrinsic’ and instrumentally corrupted component
with a coherence scale of 20 and 2.4 MHz, respectively (dominating the line-of-sight power
spectrum over scales k ≤ 0.2 h cMpc−1) and a baseline-dependent periodic signal with a period of ∼1 MHz (dominating over k ∼ 0.4–0.8 h cMpc−1), which should be distinguishable
from the 21-cm Epoch of Reionization signal whose typical coherence scale is ∼0.8 MH
THE ROLE OF RISK ASSESSMENT IN MANAGING RISK
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