New species of Parmeliaceae (lichenized Ascomycotina) from South America

The species Flavoparmelia quichuaensis Elix & T. H. Nash, Hypotrachyna divaricatica Elix & T. H. Nash, Hypotrachyna goiasii Elix & Nash, Hypotrachyna hypoalectorialica Elix & T. H. Nash and Relicina xanthoparmeliformis Elix & T. H. Nash are described as new to science

Identifying a sufficient core group for trachoma transmission.

BackgroundIn many infectious diseases, a core group of individuals plays a disproportionate role in transmission. If these individuals were effectively prevented from transmitting infection, for example with a perfect vaccine, then the disease would disappear in the remainder of the community. No vaccine has yet proven effective against the ocular strains of chlamydia that cause trachoma. However, repeated treatment with oral azithromycin may be able to prevent individuals from effectively transmitting trachoma.Methodology/principal findingsHere we assess several methods for identifying a core group for trachoma, assuming varying degrees of knowledge about the transmission process. We determine the minimal core group from a completely specified model, fitted to results from a large Ethiopian trial. We compare this benchmark to a core group that could actually be identified from information available to trachoma programs. For example, determined from the rate of return of infection in a community after mass treatments, or from the equilibrium prevalence of infection.Conclusions/significanceSufficient groups are relatively easy for programs to identify, but will likely be larger than the theoretical minimum

Areal Variation in the 1976 Presidential Vote: A Case Study of Akron

Author Institution: University of AkronA comprehensive, city-wide analysis, based on electoral precincts, was done for the City of Akron concerning the Presidential election of 1976. By superimposing a voting pattern map showing precinct votes, on a census data map showing socioeconomic data by census tracts, certain observations were made concerning the Presidential election in Akron. Black voters and lower income groups overwhelmingly supported Carter, higher income groups and college educated voters tended notably to support Ford, and middle income groups supplied the swing votes. The election of 1976 could be called both a maintaining and a deviating type of election in which the majority party, the Democrats, elected a President largely because numerous lifelong Democrats were bolstered by overwhelming percentages of black voters who voted for their party. There are also indications of white voter deviation, particularly among middle and upper income groups

Multiplayer Cost Games with Simple Nash Equilibria

Multiplayer games with selfish agents naturally occur in the design of distributed and embedded systems. As the goals of selfish agents are usually neither equivalent nor antagonistic to each other, such games are non zero-sum games. We study such games and show that a large class of these games, including games where the individual objectives are mean- or discounted-payoff, or quantitative reachability, and show that they do not only have a solution, but a simple solution. We establish the existence of Nash equilibria that are composed of k memoryless strategies for each agent in a setting with k agents, one main and k-1 minor strategies. The main strategy describes what happens when all agents comply, whereas the minor strategies ensure that all other agents immediately start to co-operate against the agent who first deviates from the plan. This simplicity is important, as rational agents are an idealisation. Realistically, agents have to decide on their moves with very limited resources, and complicated strategies that require exponential--or even non-elementary--implementations cannot realistically be implemented. The existence of simple strategies that we prove in this paper therefore holds a promise of implementability.Comment: 23 page

Broadcasting the science stories of BGS: The British Geological Survey communications strategy

The British Geological Survey (BGS) is a world leading geological survey that focuses on public-good science for government, and research to understand earth and environmental processes. Prior to November 2006, the communications culture of the BGS had been largely driven by reaction to news events and managing media requests as they emerged. Since 2007, when greater emphasis was placed on more proactive communications, the public profile of the BGS was successfully raised. In 2014, the BGS released its new science strategy, Gateway to the Earth: Science for the next decade. This has the vision of BGS becoming a global geological survey with a focus on new technologies, responsible use of natural resources, management of environmental change and resilience to environment hazards. This has informed the development of a new communications strategy for the BGS, which is outlined in this report. The main audiences for BGS science and technology are the public, government and other decision makers, industry and private business, academia, BGS staff and the wider NERC community and the media. Communication with these audiences is largely through the broadcast media and the internet, with additional communication through the print media, and the public engagement activities of the BGS. The UK Governments communications plan for 2014-15 has as its vision ‘exceptional communications’, and the Government’s Digital Strategy aims to put more data into the public domain. The key messages in the Department for Business, Innovation and Skills policy paper ‘Engaging the public in science and engineering’ are that new audiences need to be targeted outside those already interested in science and that engagement needs to be ‘where people naturally congregate, rather than expecting them to come to us’. The communication trends that have influenced the development of the new BGS communications strategy have included: mobile went mainstream; transparency and trust; social media; science stories; image is everything; and, analytics and evidence. The new communication vision is to Establish the British Geological Survey as a global authority for geoscience. The over-arching aim is to create the maximum impact for BGS science and technology by communication with the world through the media, web and public engagement. BGS will make use of traditional, new and emerging communication channels to communicate its research with the following overarching themes: • broadcasting – broadcast the science of the BGS • science – demonstrate the impact of BGS science • stories – tell the geoscience stories of the BGS. The following are the key communication objectives: • make BGS the ‘go to’ organisation for geoscience news events in the UK and globally • use broadcast quality video to communicate the research of the BGS • use infographics to illustrate the impact of BGS research • engage a wider audience by telling the science stories of the BGS • create a website that is the first port of call for geoscience information • create a positive reputation and strong brand image for the BGS using social media • create a novel digital publication channel to publish the research of the BGS • actively work to promote geoscience as a career choice and to explain BGS research • create a more successful research community in BGS by effective internal communication (both one-way and two-way)

Climate-relevant behavioral spillover and the potential contribution of social practice theory

Urgent and radical transition to lower-carbon forms of society is imperative to limit current and future climate change impacts. Behavioral spillover theory offers a way to catalyze broad lifestyle change from one behavior to another in ways that generate greater impacts than piecemeal interventions. Despite growing policy and research attention, the evidence for behavioral spillover and the processes driving the phenomenon are unclear. The literature is split between studies that provide evidence for positive spillover effects (where an intervention targeting an environmentally conscious behavior leads to an increase in another functionally related behavior) and negative spillover effects (where an intervention targeting an environmentally conscious behavior leads to a decrease in another functionally related behavior). In summarizing findings, particular attention is given to the implications for climate-relevant behaviors. While few examples of climate-relevant behavioral spillover exist, studies do report positive and negative spillovers to other actions, as well as spillovers from behavior to support for climate change policy. There is also some evidence that easier behaviors can lead to more committed actions. The potential contribution of social practice theory to understanding spillover is discussed, identifying three novel pathways to behavioral spillover: via carriers of practices, materiality, and through relationships between practices within wider systems of practice. In considering future research directions, the relatively neglected role of social norms is discussed as a means to generate the momentum required for substantial lifestyle change and as a way of circumventing obstructive and intransigent climate change beliefs

LIAS light – Towards the ten thousand species milestone

Volume: 8Start Page: 11End Page: 1

The Zero Temperature Chiral Phase Transition in SU(N) Gauge Theories

We investigate the zero temperature chiral phase transition in an SU(N) gauge theory as the number of fermions $N_f$ is varied. We argue that there exists a critical number of fermions $N_f^c$, above which there is no chiral symmetry breaking or confinement, and below which both chiral symmetry breaking and confinement set in. We estimate $N_f^c$ and discuss the nature of the phase transition.Comment: 13 pages, LaTeX, version published in PR

Games on graphs with a public signal monitoring

We study pure Nash equilibria in games on graphs with an imperfect monitoring based on a public signal. In such games, deviations and players responsible for those deviations can be hard to detect and track. We propose a generic epistemic game abstraction, which conveniently allows to represent the knowledge of the players about these deviations, and give a characterization of Nash equilibria in terms of winning strategies in the abstraction. We then use the abstraction to develop algorithms for some payoff functions.Comment: 28 page