239,781 research outputs found
The Correlation of Dental Arch Width and Ethnicity
This study sought to demonstrate a correlation between arch width, ethnic background, individual height, weight, and whether orthodontic treatment had been rendered. Conclusions revealed that arch widths were significantly larger (p= 0.002 for the mandible and p= 0.008 for the maxilla) in non-Whites than in Whites. In addition, arch widths of the mandible were significantly larger in individuals who had had orthodontic treatment compared to those who had not (p=0.005). This did not carry through to those arch widths in the maxilla of orthodontic versus nonorthodontic care (p=0.258)
Neural-inspired sensors enable sparse, efficient classification of spatiotemporal data
Sparse sensor placement is a central challenge in the efficient
characterization of complex systems when the cost of acquiring and processing
data is high. Leading sparse sensing methods typically exploit either spatial
or temporal correlations, but rarely both. This work introduces a new sparse
sensor optimization that is designed to leverage the rich spatiotemporal
coherence exhibited by many systems. Our approach is inspired by the remarkable
performance of flying insects, which use a few embedded strain-sensitive
neurons to achieve rapid and robust flight control despite large gust
disturbances. Specifically, we draw on nature to identify targeted
neural-inspired sensors on a flapping wing to detect body rotation. This task
is particularly challenging as the rotational twisting mode is three
orders-of-magnitude smaller than the flapping modes. We show that nonlinear
filtering in time, built to mimic strain-sensitive neurons, is essential to
detect rotation, whereas instantaneous measurements fail. Optimized sparse
sensor placement results in efficient classification with approximately ten
sensors, achieving the same accuracy and noise robustness as full measurements
consisting of hundreds of sensors. Sparse sensing with neural inspired encoding
establishes a new paradigm in hyper-efficient, embodied sensing of
spatiotemporal data and sheds light on principles of biological sensing for
agile flight control.Comment: 21 pages, 19 figure
No Longer Home
A father and his wife struggle to adapt to their son just home from the long War on Terrorism.
Articles, stories, and other compositions in this archive were written by participants in the Mighty Pen Project. The program, developed by author David L. Robbins, and in partnership with Virginia Commonwealth University and the Virginia War Memorial in Richmond, Virginia, offers veterans and their family members a customized twelve-week writing class, free of charge. The program encourages, supports, and assists participants in sharing their stories and experiences of military experience so both writer and audience may benefit.
Articles, stories, and other compositions in this archive were written by participants in the Mighty Pen Project. The program, developed by author David L. Robbins, and in partnership with Virginia Commonwealth University and the Virginia War Memorial in Richmond, Virginia, offers participants a twelve-week writing class customized for veterans and their family members, free of charge. The program encourages, supports, and assists participants in sharing their stories and experiences related to their military experience so the writer and readers may benefit from the stories shared
Who\u27s That Again?
When a student came to my office to introduce himself as Roy King, my onomastic perception quotient was immediately activated; I realized that what I had here was a prime example of an onomastic tautology. For the cognoscenti, further explanation of this is probably not necessary, but as I often find myself in the rands of the incognoscenti, let me explain that even though the words have different linguistic origins, they denote the same idea and have the same meaning. (Roy is French or Anglo-American for King.
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Changes in the Distribution of Income Among Tax Filers Between 1996 and 2006: The Role of Labor Income, Capital Income, and Tax Policy
[Excerpt] This report examines changes in income inequality among tax filers between 1996 and 2006. In particular, the role of changes in wages, capital income, and tax policy, especially the 2001 and 2003 tax cuts, is investigated. During this period, there were changes in the sources of income that differed by income category and there were changes in tax policy. The years 1996 and 2006 are examined for several reasons. First, both years were at approximately similar points of the business-cycle with moderate inflation (about 3%), a modest unemployment rate (about 5%), and moderate economic growth (3.7% in 1996 and 2.7% in 2006). Second, 2006 was the year before the August 2007 liquidity crunch and the onset of the severe 2007-2009 recession. Third, there were major tax policy changes between these two years. Fourth, both 1996 and 2006 were three years after the enactment of tax legislation that affected tax rates and are unlikely to be affected by short-run behavioral responses to these changes
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The Bush Tax Cuts and the Economy
[Excerpt] A series of tax cuts were enacted early in the George W. Bush Administration by the Economic Growth and Tax Relief Reconciliation Act of 2001 (EGTRRA; P.L. 107-16) and the Jobs and Growth Tax Relief Reconciliation Act of 2003 (JGTRRA; P.L. 108-27). These tax cuts, which are collectively known as the Bush tax cuts, are scheduled to expire at the end of 2010. Beginning in 2011, many of the individual income tax parameters (such as tax rates) will revert back to 2000 levels. The major tax provisions in EGTRRA and JGTRRA that are part of the current debate over the Bush tax cuts are the reduced tax rates, the reduction of the marriage penalty (and increase in the marriage bonus), the repeal of the personal exemption phaseout and the limitation on itemized deductions, the reduced tax rates on long-term capital gains and qualified dividends, and expanded tax credits. This report examines the Bush tax cuts within the context of the current and long-term economic environment
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