5,166 research outputs found
Factors affecting U.S. marketers\u27 decisions on Latin America
John Gunther\u27s opening comment in his book titled Inside Latin America was, The first thing to say about Latin America is that no such thing exists. What does exist are twenty independent and highly individual countries which differ from one another strikingly.
There are many who support this school of thought and it is true that the republics of Latin America vary drastically in size, wealth, culture, race, and population; and are presently involved in different stages of political, economic and social revolution.
However, there are many points of common ground for these groups of countries
The demand for higher education.
Thesis (M.A.)--Boston UniversityThe primary objective is to find the most effective influences on the demand for higher education. To do so it is necessary to attempt to measure the effect of several factors on enrollment, but there are so many difficulties involved that a measurement of the quantity of demand is impractical.
Higher education is an especially involved type of service, not only because it is held apart from the usual market conditions, but because of its great diversity and the fact that it is offered for sale in several different ways, to direct consumers such as students and indirect consumers who do not use the services themselves but help pay for them because they are believed beneficial to the community. Much of this complexity is avoided by omitting large areas such as the demand by indirect consumers and the differences in demand for different types of institutions, course offerings, and degree programs. An attempt is made, however, to at least identify as many different aspects of the demand picture as possible. [TRUNCATED
Environmental Injustice: The Failure of American Civil Rights and Environmental Law to Provide Equal Protection from Pollution
Alien Registration- Frye, Grace M. (Calais, Washington County)
https://digitalmaine.com/alien_docs/1176/thumbnail.jp
A Sub-Damped Ly Absorber with Unusual Abundances: Evidence of Gas Recycling in a Low-Redshift Galaxy Group
Using Hubble Space Telescope/Space Telescope Imaging Spectrograph G140M
spectroscopy, we investigate an absorption-line system at =0.07489 in the
spectrum of the quasi-stellar object PG 1543+489 (=0.401). The
sightline passes within kpc of an edge-on disk galaxy at a
similar redshift, but the galaxy belongs to a group with four other galaxies
within kpc. We detect H I [log (H I/) = 19.120.04]
as well as N I, Mg II, Si II, and Si III, from which we measure a gas-phase
abundance of [N/H] = . Photoionization models indicate that the
nitrogen-to-silicon relative abundance is solar, yet magnesium is underabundant
by a factor of 2. We also report spatially resolved emission-line
spectroscopy of the nearby galaxy, and we extract its rotation curve. The
galaxy's metallicity is higher than [N/H] in the absorber,
and interestingly, the absorber velocities suggest that the gas at 66
kpc is corotating with the galaxy's stellar disk, possibly with an inflow
component. These characteristics could indicate that this sub-damped Ly
absorber system arises in a "cold-accretion" flow. However, the absorber
abundance patterns are peculiar. We hypothesize that the gas was ejected from
its galaxy of origin (or perhaps is a result of tidal debris from interactions
between the group galaxies) with a solar nitrogen abundance, but that
subsequently mixed with (and was diluted by) gas in the circumgalactic medium
(CGM) or group. If the gas is bound to the nearby galaxy, this system may be an
example of the gas "recycling" predicted by theoretical galaxy simulations. Our
hypothesis is testable with future observations.Comment: 16 pages (in print): The Astrophysical Journal, vol 872, 12
Observations of the Gas Reservoir around a Star Forming Galaxy in the Early Universe
We present a high signal-to-noise spectrum of a bright galaxy at z = 4.9 in
14 h of integration on VLT FORS2. This galaxy is extremely bright, i_850 =
23.10 +/- 0.01, and is strongly-lensed by the foreground massive galaxy cluster
Abell 1689 (z=0.18). Stellar continuum is seen longward of the Ly-alpha
emission line at ~7100 \AA, while intergalactic H I produces strong absorption
shortward of Ly-alpha. Two transmission spikes at ~6800 Angstroms (A) and ~7040
A are also visible, along with other structures at shorter wavelengths.
Although fainter than a QSO, the absence of a strong central ultraviolet flux
source in this star forming galaxy enables a measurement of the H I flux
transmission in the intergalactic medium (IGM) in the vicinity of a high
redshift object. We find that the effective H I optical depth of the IGM is
remarkably high within a large 14 Mpc (physical) region surrounding the galaxy
compared to that seen towards QSOs at similar redshifts. Evidently, this
high-redshift galaxy is located in a region of space where the amount of H I is
much larger than that seen at similar epochs in the diffuse IGM. We argue that
observations of high-redshift galaxies like this one provide unique insights on
the nascent stages of baryonic large-scale structures that evolve into the
filamentary cosmic web of galaxies and clusters of galaxies observed in the
present universe.Comment: Accepted for publication in ApJL (corrected typos
Group Behavior: Social Context Modulates Behavioral Responses to Sensory Stimuli
SummaryA new study reveals an unanticipated role for social context in driving group behavior of a solitary species to a sensory stimulus and is mediated by mechanosensory neurons signaling touch interactions among individuals
Cosmic ray measurements Final report
Balloon flight measurements of cosmic gamma radiation above 50 MeV in Northern Hemispher
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