26,538 research outputs found
Effect of Auto Plant Openings on Net Migration in the Auto Corridor, 1980-1997
In linking demographic trends of the last two decades to the geographic dispersion of the auto industry, this article finds that the addition of a large plant significantly influences the migration experience of the host county as well as counties adjacent to it
Effect of auto plant opening on net migration in the auto corridor, 1980-97
In linking demographic trends of the last two decades to the geographic dispersion of the auto industry, this article finds that the addition of a large plant significantly influences the migration experience of the host county as well as counties adjacent to it.Automobile industry and trade
Towards the First Galaxies
The formation of the first galaxies at redshifts z~10-15 signaled the
transition from the simple initial state of the universe to one of ever
increasing complexity. We here review recent progress in understanding their
assembly process with numerical simulations, starting with cosmological initial
conditions and modelling the detailed physics of star formation. In particular,
we study the role of HD cooling in ionized primordial gas, the impact of UV
radiation produced by the first stars, and the propagation of the supernova
blast waves triggered at the end of their brief lives. We conclude by
discussing promising observational diagnostics that will allow us to probe the
properties of the first galaxies, such as their contribution to reionization
and the chemical abundance pattern observed in extremely low-metallicity stars.Comment: 12 pages, 14 figures, appeared in "First Stars III", eds. B. O'Shea,
A. Heger and T. Abel, a high resolution version (highly recommended) can be
found at http://www.ita.uni-heidelberg.de/~tgreif/files/gjb07.pd
The Taliban insurgency and an analysis of Shabnamah (night letters)
http://dx.doi.org/10.1080/09592310701674176The Taliban has recently re-emerged on the Afghan scene with vengeance. Five years after being defeated by a US coalition, the resurgent Taliban, backed by al-Qaeda, are mounting an increasingly virulent insurgency, especially in the east and south, near the Afghanistan-Pakistan border. The Taliban now represents a significant challenge to the survival of President Hamid Karazi's government. This article assesses the narrative strategy the Taliban has employed to garner support with the Afghan people. Specifically, this paper assesses the narratives of Taliban shabnamah, commonly referred to as 'night letters' in an effort to unravel what the Taliban represents
A STOCHASTIC DOMINANCE ANALYSIS OF CONTRACT GRAZING FEEDER CATTLE
Contract grazing feeder cattle is an arrangement where cattle owned by one party graze forage produced on land owned by another party. The forage producer is paid a fixed price per pound gained. Stochastic dominance analysis is used to compare contract grazing and the more traditional system in which the same individual owns both the cattle and land.Livestock Production/Industries,
Book Review by Thomas H. Johnson of Taliban: the Unknown Enemy by James Ferguson
The article of record as published may be found at http://dx.doi.org/10.1111/j.1540-6564.2012.00334_2.
A Variable Acceleration Calibration System
A variable acceleration calibration system that applies loads using gravitational and centripetal acceleration serves as an alternative, efficient and cost effective method for calibrating internal wind tunnel force balances. Two proof-of-concept variable acceleration calibration systems are designed, fabricated and tested. The NASA UT-36 force balance served as the test balance for the calibration experiments. The variable acceleration calibration systems are shown to be capable of performing three component calibration experiments with an approximate applied load error on the order of 1% of the full scale calibration loads. Sources of error are indentified using experimental design methods and a propagation of uncertainty analysis. Three types of uncertainty are indentified for the systems and are attributed to prediction error, calibration error and pure error. Angular velocity uncertainty is shown to be the largest indentified source of prediction error. The calibration uncertainties using a production variable acceleration based system are shown to be potentially equivalent to current methods. The production quality system can be realized using lighter materials and a more precise instrumentation. Further research is needed to account for balance deflection, forcing effects due to vibration, and large tare loads. A gyroscope measurement technique is shown to be capable of resolving the balance deflection angle calculation. Long term research objectives include a demonstration of a six degree of freedom calibration, and a large capacity balance calibration
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