403 research outputs found
A Lion\u27s Share of Tourism in the 21st Century
Leisure-time activities and tourism are placing overwhelming demands on society and the environment. In order to meet these demands--or prevent the danger they will bring--we might think of three possible solutions: 1) representative tourism; 2) development of local, ethnic sites; 3) use of educational programs, video and movie presentations given to tourists before they enter a country; and formal courses in Popular Culture Studies as Humanities, which will develop thematically the similarities and differences of and between all people, respect for those differences, and a greater respect for humankind and nature
The First VLBI Detection of a Spiral DRAGN Core
The existence of spiral DRAGNs challenges standard galaxy formation theories.
We present the first observation of 0313192, the archetypal spiral DRAGN, at
VLBI resolutions. Spiral DRAGNs are Double Radio Sources Associated with
Galactic Nuclei (DRAGNs) that are hosted by spiral galaxies. 0313192 is an
edge-on spiral galaxy that appears to host a 360 kpc double-lobed radio source.
The core of this galaxy is clearly detected at L, S, and X-bands using the
VLBA, signifying an ongoing active nucleus in the galaxy. This rules out the
possibility that the spiral DRAGN is merely a chance alignment. The radio core
has LW Hz. Radio components are
detected to the South-West of the core, but there are no detections of a
counterjet. Assuming a symmetric, relativistic jet, we estimate an upper limit
to the inclination angle of degrees. The VLBI-detected
radio jet components are extremely well-aligned with the larger-scale radio
source suggesting little to no jet disruption or interaction with the ISM of
the host galaxy.Comment: 6 pages, 4 figure
Subjective response to alcohol and associated craving in heavy drinkers vs. alcohol dependents: An examination of Koob's allostatic model in humans
BACKGROUND: Koob's allostatic model of addiction emphasizes the transition from positive reinforcement to negative reinforcement as dependence develops. This study seeks to extend this well-established neurobiological model to humans by examining subjective response to alcohol (SR) as a biobehavioral marker of alcohol reinforcement. Specifically, this study examines (a) differential SR in heavy drinkers (HDs) vs. alcohol dependent individuals (ADs) and (b) whether HDs and ADs differ in terms of the association between SR and craving. METHODS: Data was culled from two alcohol challenge studies, totaling 91 participants (oversampled on OPRM1 Asp40 carriers). Alcohol was administered intravenously and participants completed standard measures of SR and craving at BrAC's of 0.02, 0.04, and 0.06 g/dl. SR was modeled as a multidimensional construct consisting of stimulation, sedation, and tension relief. RESULTS: ADs reported significantly higher sedation and craving initially and exhibited a blunted response to alcohol along escalating BrACs. ADs exhibited greater initial tension but did not differ from HDs in tension reduction across rising BrACs. Further, alcohol-induced stimulation was associated with alcohol craving to a significantly greater degree in HDs, as compared to ADs. CONCLUSIONS: This study provides initial evidence that HDs and ADs differ in their subjective experience of alcohol and in the association between dimensions of SR and craving for alcohol. Hypotheses derived from the allostatic model were partially supported, such that, while ADs and HDs did not differ on stimulation response, there was a relative dissociation between positive reinforcement and craving in ADs as compared to HDs
Cultural Differences between Indian & US College Students on Attitudes toward Celebrities & the Love Attitudes Scale
We administered the Celebrity Attitude Scale (CAS) and the Love Attitudes Scale (LAS) to 59 university students in the United States and 61university students in India. Students from both countries who scored as dependent, needy lovers tended to also score high on all three subscales of the CAS, suggesting that some persons with failed personal relationships may become attracted to parasocial relationships with celebrities as a safe alternative. Students from the U.S. who tended to view love as a game, as measured by the LAS game-playing subscale, also tended to strongly admire their favorite celebrity in an intense personal way. Differences and similarities between the Indian and American samples on the CAS and LAS were discussed. The study provides additional evidence that the two problematic levels of the CAS are associated with undesirable attitudes and behaviors
POTs: Protective Optimization Technologies
Algorithmic fairness aims to address the economic, moral, social, and
political impact that digital systems have on populations through solutions
that can be applied by service providers. Fairness frameworks do so, in part,
by mapping these problems to a narrow definition and assuming the service
providers can be trusted to deploy countermeasures. Not surprisingly, these
decisions limit fairness frameworks' ability to capture a variety of harms
caused by systems.
We characterize fairness limitations using concepts from requirements
engineering and from social sciences. We show that the focus on algorithms'
inputs and outputs misses harms that arise from systems interacting with the
world; that the focus on bias and discrimination omits broader harms on
populations and their environments; and that relying on service providers
excludes scenarios where they are not cooperative or intentionally adversarial.
We propose Protective Optimization Technologies (POTs). POTs provide means
for affected parties to address the negative impacts of systems in the
environment, expanding avenues for political contestation. POTs intervene from
outside the system, do not require service providers to cooperate, and can
serve to correct, shift, or expose harms that systems impose on populations and
their environments. We illustrate the potential and limitations of POTs in two
case studies: countering road congestion caused by traffic-beating
applications, and recalibrating credit scoring for loan applicants.Comment: Appears in Conference on Fairness, Accountability, and Transparency
(FAT* 2020). Bogdan Kulynych and Rebekah Overdorf contributed equally to this
work. Version v1/v2 by Seda G\"urses, Rebekah Overdorf, and Ero Balsa was
presented at HotPETS 2018 and at PiMLAI 201
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