763 research outputs found
Terahertz spectroscopy of spin excitations in magnetoelectric LiFePO4 in high magnetic fields
Contains fulltext :
283891.pdf (Publisherâs version ) (Open Access
Moduli of mathematical instanton vector bundles with odd c_2 on projective space
The problem of irreducibility of the moduli space I_n of rank-2 mathematical
instanton vector bundles with arbitrary positive second Chern class n on the
projective 3-space is considered. The irreducibility of I_n was known for small
values of n: Barth 1977 (n=1), Hartshorne 1978 (n=2), Ellingsrud and Stromme
1981 (n=3), Barth 1981 (n=4), Coanda, Tikhomirov and Trautmann 2003 (n=5). In
this paper we prove the irreducibility of I_n for an arbitrary odd n.Comment: 62 page
UNLV Authors Honored for Publications in 2002
Lists UNLV authors and their publications who were honored at the 2003 UNLV authors reception. Includes cover art
Where do highârisk drinking occasions occur more often? A crossâsectional, crossâcountry study
Introduction
The current paper examines the proportion of drinking occasions and total alcohol consumed that takes place at off-premise locations. Comparisons are made between high-income countries: Australia, New Zealand, England and Scotland, and across drinker-types: high-risk and lower-risk.
Methods
Data were taken from the International Alcohol Control study in Australia (Nâ=â1789), New Zealand (Nâ=â1979), England (Nâ=â2844) and Scotland (Nâ=â1864). The cross-national survey measures location and beverage-specific alcohol consumption. The number of drinking occasions and mean consumption across on- and off-premise locations and the proportion of drinking occasions that high- and lower-risk drinkers had at on- and off-premise locations was estimated for each country.
Results
The majority of drinking occasions among high-risk drinkers occurred at off-premise locations across all four countries; Australia 80.1%, New Zealand 72.0%, England 61.7% and Scotland 60.7%. High-risk drinkers in Australia had significantly larger proportions of drinking occasions occurring at off-premise locations compared to England and Scotland. Across all countries, high-risk drinkers and lower-risk drinkers consumed significantly larger quantities of alcohol per occasion at off-premise locations compared to on-premises locations. Finally, the majority of total alcohol consumed occurred at off-premise locations across all countries for high- and lower-risk drinkers.
Discussion and Conclusions
As the accessibility to alcohol outside of licensed premises continues to increase, particularly with the expansion of home delivery services, it is important to be mindful of the high proportion of heavy drinking occasions that occur off-premise
Characteristics of individuals presenting to treatment for primary alcohol problems versus other drug problems in the Australian patient pathways study
Background: People seeking treatment for substance use disorders often have additional health and social issues.
Although individuals presenting with alcohol as the primary drug of concern (PDOC) account for nearly half of all
treatment episodes to the Australian alcohol and other drug (AOD) service system, previous treatment cohort
studies have focused only on the profile of Australian heroin or methamphetamine users. While studies overseas
indicate that clients seeking treatment primarily for their drinking are less likely to experience social and economic
marginalisation than those seeking treatment primarily for illicit or pharmaceutical drug use, very little research has
directly compared individuals presenting with alcohol as the PDOC to those primarily presenting with other drugs
as their PDOC.
Methods: Seven hundred and ninety-six participants were recruited at entry to specialist AOD treatment in Victoria
and Western Australia, and completed measures of demographic and social factors, substance use, quality of life,
service use, and criminal justice involvement. We compared those with alcohol as their PDOC to those with other
drugs as their PDOC using Pearson chi-square and MannâWhitney U tests.
Results: Rates of social disadvantage, poor quality of life, high severity of substance dependence, and past-year
AOD, mental health, acute health, and social service use were high in all groups. However, participants with alcohol as
the PDOC were older; more likely to have an educational qualification; less likely to report criminal justice involvement,
housing/homelessness service use, tobacco smoking, or problems with multiple substances; and reported better
environmental quality of life; but were more likely to have used ambulance services, than those with other drugs
as their PDOC.
Conclusions: While those seeking treatment primarily for alcohol problems appear less likely to suffer some forms of
social and economic disadvantage or to use multiple substances than those with a primary drug problem, they
experience similarly high levels of substance dependence severity and mental health and AOD service use. These
findings reinforce the need for AOD services to integrate or coordinate care with programs that address the many
complexities clients frequently present with, while also acknowledging differences between those seeking treatment
for alcohol versus other drug problems
A Thousand Contradictory Ways: Addiction, Neuroscience, and Expert Autobiography
Neuroscientific accounts of addiction are increasingly influential in health and medical circles. At the same time a diverse, if equally scientifically focused, opposition to addiction neuroscience is emerging. In this struggle over the merits of addiction neuroscience are elements of a uniquely 21st-century public engagement with science. No longer trusted by the public as the unerring source of objective knowledge about the world, science is, at least in some contexts, increasingly treated as just one voice among many. Observing the difficulties this loss of faith in science poses for effective action on pressing issues such as climate change, philosopher Bruno Latour develops a different (ecological) approach to scientific knowledge, one that for the first time allows scientists (and other âmodernsâ) to understand it for what it really is and locate it âdiplomaticallyâ alongside other modes of knowing. In this article, I ask whether a similar innovation is needed to allow more effective understanding of addiction. I explore this question by analyzing two recent, widely discussed, popular books (Marc Lewisâs Memoirs of an Addicted Brain: A Neuroscientist Examines His Former Life on Drugs, 2011 and Carl Hartâs High Price: A Neuroscientistâs Journey of Self-discovery that Challenges Everything You Think You Know About Drugs and Society, 2013) as well as reviews of these books. Written by neuroscientists, and drawing heavily on personal memoir to illustrate and ratify their competing views on drugs and addiction, both books crystallize contemporary dilemmas about science, empiricism, and the nature of evidence and truth. How are we to understand their mix of âscientific factâ and individual self-observation, what does this mix suggest about scientific knowledge, and what are its implications for dominant notions of âevidence-basedâ drug policy and treatment? I argue that these books both trouble and reinforce our taken-for-granted distinctions between science and personal stories, between objectivity and subjectivity, and note the lost opportunities the books represent for a more searching and productive (Latour might say âecologicalâ) engagement with science
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