5,224 research outputs found
The Scientist–Reporter Collaboration: A Guide to Working with the Press
Science, technology, engineering, and mathematics (STEM) to the public can be challenging. Often, the language that researchers use among themselves is technical and difficult for non-experts to decipher. But as you probably know, communicating your research to non-experts is becoming mandatory. In a direct sense, funding agencies often require outreach for grant fulfillment. There are indirect benefits as well: Conveying the joy of discovery and the relevance of scientific results builds scientific literacy among the public---which of course includes both students who will eventually do research of their own and people who elect the policy makers who allocate funding. How many people know that what scientists do can be fun and interesting
Deidamia Inscriptum (lettered Sphinx Moth) Caterpillars Feeding on Oxydendrum Arboreum (sourwood) and Their Predation by Black Bears in Northeast Tennessee
An outbreak of Deidamia inscriptum (Lettered Sphinx Moth) caterpillars was noted in northeast Tennessee where Oxydendrum arboreum (Sourwood) trees were defoliated. Nearly all published literature and online resources list only plants in the grape family (Vitaceae) as larval food plants. Food-plant preference trials using fresh leaves of 3 woody plant species showed that Deidamiacaterpillars from this region had a preference for Sourwood over Parthenocissus quinquefolia(Virginia Creeper), and rejected Acer rubrum (Red Maple), a non-host species. Ursus americanus(Black Bear) were feeding on the caterpillars as evidenced by bent and broken Sourwood saplings bearing claw marks and by abundant sphingid remains in bear scat
Institutional Fields and Green IS: Understanding the Influence
Although institutional theory has demonstrated that social, political, and cultural pressures within organizational environments shape the diffusion of new practices, few studies have examined whether managers actually perceive different types of field-level pressures to be important and, if so, whether their perceptions are associated with practice adoption. This is particularly true in the context of institutional fields. In this paper, we use survey data from 425 managers to analyze their perceptions of broader field-level pressures relating to climate change, and the relationship between these perceptions and the adoption of green information systems (IS). Our preliminary results reveal that managerial perceptions of pressure from environmental activists are not significantly related to managerial commitment to adoption or to actual adoption, but that managerial perceptions of broader field-level pressures to address climate change are positively related to both. In addition, we find that activist pressures are positively related to field-level pressures, suggesting that activism is more influential as an indirect rather than a direct pressure on corporations in shaping the adoption of green IS
Geographic Variation in Informed Consent Law: Two Standards for Disclosure of Treatment Risks
We analyzed 714 jury verdicts in informed consent cases tried in 25 states in 1985–2002 to determine whether the applicable standard of care (“patient” vs. “professional” standard) affected the outcome. Verdicts for plaintiffs were significantly more frequent in states with a patient standard than in states with a professional standard (27 percent vs. 17 percent, P = 0.02). This difference in outcomes did not hold for other types of medical malpractice litigation (36 percent vs. 37 percent, P = 0.8). The multivariate odds of a plaintiff’s verdict were more than twice as high in states with a patient standard than in states with a professional standard (odds ratio = 2.15, 95% confidence interval = 1.32–3.50). The law’s expectations of clinicians with respect to risk disclosure appear to vary geographically
Does Corporate Lobbying Benefit Society?
Lobbying, defined as an effort to influence policy through strategic communication, has grown dramatically in recent years. This paper presents three viewpoints regarding the societal impact of corporate lobbying on society: one perspective argues that lobbying will be primarily beneficial, an alternative perspective contests this viewpoint and suggests that it is generally harmful, and the third argues that the impact is contingent on a number of factors. Proponents of lobbying argue that it is a vital mechanism to transmit valuable information and expertise to policymakers, leading to substantive legislative solutions for resolving complex societal issues. Critics, on the other hand, point out that business dominates lobbying and can leverage vast resources to push biased information in the pursuit of narrow profit-oriented interests. There are three key axes of contention between these three perspectives; first, concerning the definition of lobbying and its relation to corporate power; second, its relationship to democratic processes; and third, regarding alignment or conflict between societal and business interests. The paper examines these issues and draws implications for future research
Don Juan Pond, Antarctica: Near-surface CaClâ‚‚-brine feeding Earth's most saline lake and implications for Mars
The discovery on Mars of recurring slope lineae (RSL), thought to represent seasonal brines, has sparked interest in analogous environments on Earth. We report on new studies of Don Juan Pond (DJP), which exists at the upper limit of ephemeral water in the McMurdo Dry Valleys (MDV) of Antarctica, and is adjacent to several steep-sloped water tracks, the closest analog for RSL. The source of DJP has been interpreted to be deep groundwater. We present time-lapse data and meteorological measurements that confirm deliquescence within the DJP watershed and show that this, together with small amounts of meltwater, are capable of generating brines that control summertime water levels. Groundwater input was not observed. In addition to providing an analog for RSL formation, CaCl₂ brines and chloride deposits in basins may provide clues to the origin of ancient chloride deposits on Mars dating from the transition period from “warm/wet” to “cold/dry” climates
Cross-Over between universality classes in a magnetically disordered metallic wire
In this article we present numerical results of conduction in a disordered
quasi-1D wire in the possible presence of magnetic impurities. Our analysis
leads us to the study of universal properties in different conduction regimes
such as the localized and metallic ones. In particular, we analyse the
cross-over between universality classes occurring when the strength of magnetic
disorder is increased. For this purpose, we use a numerical Landauer approach,
and derive the scattering matrix of the wire from electron's Green's function.Comment: Final version, accepted for publication in New Journ. of Physics, 27
pages, 28 figures. Replaces the earlier shorter preprint arXiv:0910.427
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A Randomized, Controlled, Phase 2 Study of Maralixibat in the Treatment of Itching Associated With Primary Biliary Cholangitis.
Primary biliary cholangitis (PBC) is typically associated with elevated serum bile acid levels and pruritus, but pruritus is often refractory to treatment with existing therapies. This phase 2 study assessed the efficacy and safety of maralixibat, a selective, ileal, apical, sodium-dependent, bile acid transporter inhibitor, in adults with PBC and pruritus. Adults with PBC and pruritus who had received ursodeoxycholic acid (UDCA) for ≥6 months or were intolerant to UDCA were randomized 2:1 to maralixibat (10 or 20 mg/day) or placebo for 13 weeks in combination with UDCA (when tolerated). The primary outcome was change in Adult Itch Reported Outcome (ItchRO™) average weekly sum score (0, no itching; 70, maximum itching) from baseline to week 13/early termination (ET). The study enrolled 66 patients (maralixibat [both doses combined], n = 42; placebo, n = 24). Mean ItchRO™ weekly sum scores decreased from baseline to week 13/ET with maralixibat (-26.5; 95% confidence interval [CI], -31.8, -21.2) and placebo (-23.4; 95% CI, -30.3, -16.4). The difference between groups was not significant (P = 0.48). In the maralixibat and placebo groups, adverse events (AEs) were reported in 97.6% and 70.8% of patients, respectively. Gastrointestinal disorders were the most frequently reported AEs (maralixibat, 78.6%; placebo, 50.0%). Conclusion: Reductions in pruritus did not differ significantly between maralixibat and placebo. However, a large placebo effect may have confounded assessment of pruritus. Lessons learned from this rigorously designed and executed trial are indispensable for understanding how to approach trials assessing pruritus as the primary endpoint and the therapeutic window of bile acid uptake inhibition as a therapeutic strategy in PBC
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