80 research outputs found
You Get What You Vote For: Electoral Determinants of Economic Freedom
While several cross-sectional studies (La Porta et. al. 2002, Norton 2002) examine institutional and cultural determinants of economic freedom, changes in economic freedom remain unexamined. I construct a measure of median voter preferences and find changes in voter preferences for economic freedom to be a significant determinant of changes in economic freedom in a panel of 25 OECD countries. The voter preference measure is robust to several alternative specifications, including the addition of institutional variables.Economic Freedom, Median Voter, Manifesto Data, Voter Preferences,
The Price of everything The Value of Nothing: A (Truly) External Review Of BERL’s Study Of Harmful Alcohol and Drug Use
In March 2009, Business and Economic Research Limited ("BERL") published “Costs of Harmful Alcohol and Other Drug Use,” a report jointly commissioned by the Ministry of Health and ACC. BERL was asked to measure the costs of drug and alcohol abuse to New Zealand society, but not to evaluate specific interventions. BERL calculated annual social costs of alcohol and illicit drug consumption of 4.8 billion in social costs from alcohol alone. The report was cited by Law Commission President Sir Geoffrey Palmer as evidence in support of greater regulation, gaining considerable media coverage. We find substantial flaws in BERL’s method that together account for well over 90% of BERL’s calculated costs of alcohol use. Corrected external costs of alcohol use amount to 516 million collected in alcohol excise taxes. The BERL report is wholly inadequate for use in assisting policy development.costs and benefits of alcohol usage; alcohol policy; New Zealand; adequacy of consultancy reports
Expressive and Instrumental Voting: The Scylla and Charybdis of Constitutional Political Economy
Brennan and Hamlin (2002) note that expressive voting still holds at the constitutional phase. The argument, when taken to its necessary conclusion, proves quite problematic for Constitutional Political Economy. Veil mechanisms following Buchanan induce expressive voting at the constitutional phase, removing the normative benefits ascribed to the hypothetical unanimity principle. If the constitution is authored by a small group and the veil is thereby removed, instrumental considerations come to bear and the authors of the constitution establish themselves as Oligarch.expressive voting, constitutional political economy, Leviathan
Does Cyberspace Need Antitrust?
E-commerce may prove a double-edged sword for antitrust enforcement. While the internet massively increases the potential size of the relevant market for any antitrust investigation, thereby reducing the need for antitrust activity, it also opens firms up to protectionist uses of antitrust by foreign authorities using an economic effects rule for jurisdiction. An origin-based policy of regulation is recommended.internet, antitrust, extraterritoriality
The Top Ten List of Gravitational Lens Candidates from the HST Medium Deep Survey
A total of 10 good candidates for gravitational lensing have been discovered
in the WFPC2 images from the HST Medium Deep Survey (MDS) and archival primary
observations. These candidate lenses are unique HST discoveries, i.e. they are
faint systems with sub-arcsecond separations between the lensing objects and
the lensed source images. Most of them are difficult objects for ground-based
spectroscopic confirmation or for measurement of the lens and source redshifts.
Seven are ``strong lens'' candidates which appear to have multiple images of
the source. Three are cases where the single image of the source galaxy has
been significantly distorted into an arc. The first two quadruply lensed
candidates were reported in Ratnatunga et al 1995 (ApJL, 453, L5) We report on
the subsequent eight candidates and describe them with simple models based on
the assumption of singular isothermal potentials. Residuals from the simple
models for some of the candidates indicate that a more complex model for the
potential will probably be required to explain the full structural detail of
the observations once they are confirmed to be lenses. We also discuss the
effective survey area which was searched for these candidate lens objects.Comment: 26 pages including 12 figures and 10 tables. AJ Vol. 117, No.
Approach for Structurally Clearing an Adaptive Compliant Trailing Edge Flap for Flight
The Adaptive Compliant Trailing Edge (ACTE) flap was flown on the National Aeronautics and Space Administration (NASA) Gulfstream GIII testbed at the NASA Armstrong Flight Research Center. This smoothly curving flap replaced the existing Fowler flaps creating a seamless control surface. This compliant structure, developed by FlexSys Inc. in partnership with the Air Force Research Laboratory, supported NASA objectives for airframe structural noise reduction, aerodynamic efficiency, and wing weight reduction through gust load alleviation. A thorough structures airworthiness approach was developed to move this project safely to flight. A combination of industry and NASA standard practice require various structural analyses, ground testing, and health monitoring techniques for showing an airworthy structure. This paper provides an overview of compliant structures design, the structural ground testing leading up to flight, and the flight envelope expansion and monitoring strategy. Flight data will be presented, and lessons learned along the way will be highlighted
The Maunakea Spectroscopic Explorer Book 2018
(Abridged) This is the Maunakea Spectroscopic Explorer 2018 book. It is
intended as a concise reference guide to all aspects of the scientific and
technical design of MSE, for the international astronomy and engineering
communities, and related agencies. The current version is a status report of
MSE's science goals and their practical implementation, following the System
Conceptual Design Review, held in January 2018. MSE is a planned 10-m class,
wide-field, optical and near-infrared facility, designed to enable
transformative science, while filling a critical missing gap in the emerging
international network of large-scale astronomical facilities. MSE is completely
dedicated to multi-object spectroscopy of samples of between thousands and
millions of astrophysical objects. It will lead the world in this arena, due to
its unique design capabilities: it will boast a large (11.25 m) aperture and
wide (1.52 sq. degree) field of view; it will have the capabilities to observe
at a wide range of spectral resolutions, from R2500 to R40,000, with massive
multiplexing (4332 spectra per exposure, with all spectral resolutions
available at all times), and an on-target observing efficiency of more than
80%. MSE will unveil the composition and dynamics of the faint Universe and is
designed to excel at precision studies of faint astrophysical phenomena. It
will also provide critical follow-up for multi-wavelength imaging surveys, such
as those of the Large Synoptic Survey Telescope, Gaia, Euclid, the Wide Field
Infrared Survey Telescope, the Square Kilometre Array, and the Next Generation
Very Large Array.Comment: 5 chapters, 160 pages, 107 figure
Correlation of the ratio of metastatic to non-metastatic cancer cases with the degree of socioeconomic deprivation among Texas counties
<p>Abstract</p> <p>Background</p> <p>Previous studies have demonstrated that cancer registrations and hospital discharge rate are closely correlated with census data-based socioeconomic deprivation indices. We hypothesized that communities with higher degrees of socioeconomic deprivation tend to have a higher ratio of metastatic to non-metastatic cancer cases (lung, breast, prostate, female genital system, colorectal cancers or all types of cancers combined). In this study, we investigate the potential link between this ratio and the Wellbeing Index (WI) among Texas counties.</p> <p>Results</p> <p>Cancer data in 2000 were provided by the Texas Cancer Registry, while data on the ten socioeconomic variables among the 254 Texas counties in 2000 for building the WI were obtained from U.S. Census Bureau. The ten socioeconomic status variables were subjected to the principal component analysis, and the first principal component scores were grouped into deciles for the WI (1 to 10) and the 254 Texas counties were classified into 10 corresponding groups. Weighted linear regression analyses and a Cochran-Armitage trend test were performed to determine the relationship between the ratio of age-adjusted metastatic to non-metastatic cancer incidence cases and WI. The ratios of metastatic to non-metastatic cases of female genital system cancer (<it>r</it><sup>2 </sup>= 0.84, <it>p </it>= 0.0002), all-type cancers (<it>r</it><sup>2</sup>= 0.73, <it>p </it>= 0.0017) and lung cancer (<it>r</it><sup>2</sup>= 0.54, <it>p </it>= 0.0156) at diagnosis were positively correlated with WI.</p> <p>Conclusions</p> <p>The ratios of metastatic to non-metastatic cases of all-type, female genital system and lung cancers at diagnosis were statistically correlated with socioeconomic deprivation. Potential mediators for the correlation warrant further investigation in order to reduce health disparities associated with socioeconomic inequality.</p
On helicases and other motor proteins
Helicases are molecular machines that utilize energy derived from ATP hydrolysis to move along nucleic acids and to separate base-paired nucleotides. The movement of the helicase can also be described as a stationary helicase that pumps nucleic acid. Recent structural data for the hexameric E1 helicase of papillomavirus in complex with single-stranded DNA and MgADP has provided a detailed atomic and mechanistic picture of its ATP-driven DNA translocation. The structural and mechanistic features of this helicase are compared with the hexameric helicase prototypes T7gp4 and SV40 T-antigen. The ATP-binding site architectures of these proteins are structurally similar to the sites of other prototypical ATP-driven motors such as F1-ATPase, suggesting related roles for the individual site residues in the ATPase activity
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