44 research outputs found
The Greta Thunberg Effect: Familiarity with Greta Thunberg predicts intentions to engage in climate activism in the United States
Funder: Energy Foundation; Id: http://dx.doi.org/10.13039/100005710Funder: MacArthur Foundation; Id: http://dx.doi.org/10.13039/100000870Funder: 11th Hour FoundationAbstract: Despite Greta Thunberg's popularity, research has yet to investigate her impact on the public's willingness to take collective action on climate change. Using crossâsectional data from a nationally representative survey of U.S. adults (N = 1,303), we investigate the âGreta Thunberg Effect,â or whether exposure to Greta Thunberg predicts collective efficacy and intentions to engage in collective action. We find that those who are more familiar with Greta Thunberg have higher intentions of taking collective actions to reduce global warming and that stronger collective efficacy beliefs mediate this relationship. This association between familiarity with Greta Thunberg, collective efficacy beliefs, and collective action intentions is present even after accounting for respondentsâ overall support for climate activism. Moderated mediation models testing age and political ideology as moderators of the âGreta Thunberg Effectâ indicate that although the indirect effect of familiarity with Greta Thunberg via collective efficacy is present across all ageâgroups, and across the political spectrum, it may be stronger among those who identify as more liberal (than conservative). Our findings suggest that young public figures like Greta Thunberg may motivate collective action across the U.S. public, but their effect may be stronger among those with a shared political ideology. Implications for future research and for broadening climate activistsâ appeals across the political spectrum are discussed
Human skin penetration of a copper tripeptide in vitro as a function of skin layer
Objective and designSkin retention and penetration by copper applied as glycyl-L-histidyl-L-lysine cuprate diacetate was evaluated in vitro in order to assess its potential for its transdermal delivery as an anti-inflammatory agent.Materials and methodsFlow-through diffusion cells with 1 cm(2) exposure area were used under infinite dose conditions. 0.68% aq. copper tripeptide as permeant was applied on isolated stratum corneum, heat-separated epidermis and dermatomed skin and receptor fluid collected over 48 h in 4 h intervals using inductively coupled plasma mass spectrometry to analyze for copper in tissues and receptor fluid.ResultsThe permeability coefficient of the compound through dermatomed skin was 2.43 Âą 0.51 Ă 10(-4) cm/h; 136.2 Âą 17.5 Îźg/cm(2) copper permeated 1 cm(2) of that tissue over 48 h, while 97 Âą 6.6 Îźg/cm(2) were retained as depot.ConclusionsCopper as tripeptide was delivered in potentially therapeutically effective amounts for inflammatory disease
Human skin penetration of a copper tripeptide in vitro as a function of skin layer
We study a set of 28 GRB light-curves detected between 15 December
2002 and 9Â June 2003 by the anti-coincidence shield of the
spectrometer (SPI) of INTEGRAL. During this period it has detected
50Â bursts, that have been confirmed by other instruments, with a
time resolution of 50Â ms. First, we derive the basic
characteristics of the bursts: various duration measures, the
count peak flux and the count fluence. Second, a sub-sample of 11Â bursts with 12Â individual, well-separated pulses is studied. We
fit the pulse shape with a model by Kocevski et al. (2003)
and find that the pulses are quite self-similar in shape. There is
also a weak tendency for the pulses with steep power-law decays to
be more asymmetric. Third, the variability of the complex
light-curves is studied by analyzing their power-density-spectra
(PDS) and their RMS variability.âŠThe averaged PDS, of the whole sample, is a power-law with index
of and a break between 1â2Â Hz. Fourth, we also
discuss the background and noise levels. We found that the
background noise has a Gaussian distribution and its power is
independent of frequency, i.e., it is white noise. However, it
does not follow a Poisson statistic since on average the variance
is ~1.6 larger than the mean. We discuss our results in
context of the current theoretical picture in which GRBs are
created in an anisotropic, highly relativistic outflow from
collapsing massive stars. Finally, we note that the exact
behaviour of the instrument is not yet known and therefore the
above results should be treated as preliminary.
Large expert-curated database for benchmarking document similarity detection in biomedical literature search
Document recommendation systems for locating relevant literature have mostly relied on methods developed a decade ago. This is largely due to the lack of a large offline gold-standard benchmark of relevant documents that cover a variety of research fields such that newly developed literature search techniques can be compared, improved and translated into practice. To overcome this bottleneck, we have established the RElevant LIterature SearcH consortium consisting of more than 1500 scientists from 84 countries, who have collectively annotated the relevance of over 180 000 PubMed-listed articles with regard to their respective seed (input) article/s. The majority of annotations were contributed by highly experienced, original authors of the seed articles. The collected data cover 76% of all unique PubMed Medical Subject Headings descriptors. No systematic biases were observed across different experience levels, research fields or time spent on annotations. More importantly, annotations of the same document pairs contributed by different scientists were highly concordant. We further show that the three representative baseline methods used to generate recommended articles for evaluation (Okapi Best Matching 25, Term FrequencyâInverse Document Frequency and PubMed Related Articles) had similar overall performances. Additionally, we found that these methods each tend to produce distinct collections of recommended articles, suggesting that a hybrid method may be required to completely capture all relevant articles. The established database server located at https://relishdb.ict.griffith.edu.au is freely available for the downloading of annotation data and the blind testing of new methods. We expect that this benchmark will be useful for stimulating the development of new powerful techniques for title and title/abstract-based search engines for relevant articles in biomedical research
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The Greta Thunberg Effect: Familiarity with Greta Thunberg predicts intentions to engage in climate activism in the United States
Funder: Energy Foundation; Id: http://dx.doi.org/10.13039/100005710Funder: MacArthur Foundation; Id: http://dx.doi.org/10.13039/100000870Funder: 11th Hour FoundationAbstract: Despite Greta Thunberg's popularity, research has yet to investigate her impact on the public's willingness to take collective action on climate change. Using crossâsectional data from a nationally representative survey of U.S. adults (N = 1,303), we investigate the âGreta Thunberg Effect,â or whether exposure to Greta Thunberg predicts collective efficacy and intentions to engage in collective action. We find that those who are more familiar with Greta Thunberg have higher intentions of taking collective actions to reduce global warming and that stronger collective efficacy beliefs mediate this relationship. This association between familiarity with Greta Thunberg, collective efficacy beliefs, and collective action intentions is present even after accounting for respondentsâ overall support for climate activism. Moderated mediation models testing age and political ideology as moderators of the âGreta Thunberg Effectâ indicate that although the indirect effect of familiarity with Greta Thunberg via collective efficacy is present across all ageâgroups, and across the political spectrum, it may be stronger among those who identify as more liberal (than conservative). Our findings suggest that young public figures like Greta Thunberg may motivate collective action across the U.S. public, but their effect may be stronger among those with a shared political ideology. Implications for future research and for broadening climate activistsâ appeals across the political spectrum are discussed