55 research outputs found
Entrepreneurship among Black Americans: A Theoretical Perspective on Modes of Adjustment and Entrepreneurial Education
In this paper Butler argues that despite a stronger, group-wide emphasis on new venture creation among black Americans in the past, entrepreneurship continues to be a means of economic security and wealth creation for this group. To frame his argument, Butler examines Modes of Adjustment theory and the decline of venture development among African Americans. His emphasis is on understanding the theory\u27s implication for black entrepreneurship and for the entrepreneurial education of future generations. Using data from both the Survey of Minority-owned Business Enterprises and Characteristics of Business Owners, Butler highlights the present status of black entrepreneurship to explain patterns of business and educational participation of successive generations of black Americans, from slavery onward. Butler concludes that entrepreneurship as a mode of adjustment will continue to serve as a building block for economic security, value structures, and job creation within African-American communities
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Survey of Texas Black-owned Businesses
Report on the state of black-owned businesses in Texas, based on 2010 Census data and a statewide survey of black business owners conducted in 2013. The demographic portion of the study found that the number of black-owned businesses in Texas grew faster in the early 2000s than the state average for all businesses, but the vast majority of black-owned businesses in Texas were small, with no paid employees other than the owner. In sales and number of employees, black-owned businesses lagged behind state averages. In their survey responses, a majority of black business owners indicated they felt they had the education and skills needed to succeed. They saw room for improvement in the areas of political access and contracting opportunities.Bureau of Business Researc
Upper limits on the strength of periodic gravitational waves from PSR J1939+2134
The first science run of the LIGO and GEO gravitational wave detectors
presented the opportunity to test methods of searching for gravitational waves
from known pulsars. Here we present new direct upper limits on the strength of
waves from the pulsar PSR J1939+2134 using two independent analysis methods,
one in the frequency domain using frequentist statistics and one in the time
domain using Bayesian inference. Both methods show that the strain amplitude at
Earth from this pulsar is less than a few times .Comment: 7 pages, 1 figure, to appear in the Proceedings of the 5th Edoardo
Amaldi Conference on Gravitational Waves, Tirrenia, Pisa, Italy, 6-11 July
200
Improving the sensitivity to gravitational-wave sources by modifying the input-output optics of advanced interferometers
We study frequency dependent (FD) input-output schemes for signal-recycling
interferometers, the baseline design of Advanced LIGO and the current
configuration of GEO 600. Complementary to a recent proposal by Harms et al. to
use FD input squeezing and ordinary homodyne detection, we explore a scheme
which uses ordinary squeezed vacuum, but FD readout. Both schemes, which are
sub-optimal among all possible input-output schemes, provide a global noise
suppression by the power squeeze factor, while being realizable by using
detuned Fabry-Perot cavities as input/output filters. At high frequencies, the
two schemes are shown to be equivalent, while at low frequencies our scheme
gives better performance than that of Harms et al., and is nearly fully
optimal. We then study the sensitivity improvement achievable by these schemes
in Advanced LIGO era (with 30-m filter cavities and current estimates of
filter-mirror losses and thermal noise), for neutron star binary inspirals, and
for narrowband GW sources such as low-mass X-ray binaries and known radio
pulsars. Optical losses are shown to be a major obstacle for the actual
implementation of these techniques in Advanced LIGO. On time scales of
third-generation interferometers, like EURO/LIGO-III (~2012), with
kilometer-scale filter cavities, a signal-recycling interferometer with the FD
readout scheme explored in this paper can have performances comparable to
existing proposals. [abridged]Comment: Figs. 9 and 12 corrected; Appendix added for narrowband data analysi
Search for gravitational wave bursts in LIGO's third science run
We report on a search for gravitational wave bursts in data from the three
LIGO interferometric detectors during their third science run. The search
targets subsecond bursts in the frequency range 100-1100 Hz for which no
waveform model is assumed, and has a sensitivity in terms of the
root-sum-square (rss) strain amplitude of hrss ~ 10^{-20} / sqrt(Hz). No
gravitational wave signals were detected in the 8 days of analyzed data.Comment: 12 pages, 6 figures. Amaldi-6 conference proceedings to be published
in Classical and Quantum Gravit
A922 Sequential measurement of 1 hour creatinine clearance (1-CRCL) in critically ill patients at risk of acute kidney injury (AKI)
Meeting abstrac
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Sustaining The Technopolis: High-Technology Development in Austin, Texas 1988-2012
Update and elaboration of the 1988 Journal of Business Venturing article "Creating the Technopolis: High-Technology Development in Austin, Texas" which emphasized the role of key influencers, institutions and networks that made possible Austin’s extraordinary technology-based growth. Elaborates the "Technopolis Wheel" framework to better reflect challenges and opportunities as well as review lessons learned during the past 25 years. While new aspects have emerged an unchanging, fundamental reality is that the "magic" of the Austin Model continues to be based on 1st- and 2nd-level influencers — key leaders and visionaries from academia, business, and government networking and working together to achieve targeted objectives.IC2 Institut
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County Agent Model for Entrepreneurship: An Economic Development Vision for Texas
In Texas, the entrepreneurial spirit of our people is our most renewable resource. We
believe that innovations from Texas entrepreneurs will drive our State’s economic
growth in the 21
st
century. When it comes to planning for our economic future, we
see a choice – continue relying on the serendipitous good fortune that there will be
another Michael Dell in our future, or begin aiding our own entrepreneurs with a
systematic and intentional focus on their issues.
To achieve a better future for Texas, we envision the implementation of a County
Agent Model for Entrepreneurship – an entrepreneurship support system analogous
to the county agent system that helped build our agricultural economy in the 20
th
century.IC2 Institut
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