Hashtags Functions in the Protests Across Brazil

In this article, we discuss the communicative functions of hashtags during a period of major social protests in Brazil. Drawing from a theoretical background of the use of Twitter and hashtags in protests and the functions of language, we extracted a sample of 46,090 hashtags from 2,321,249 tweets related to Brazilian protests in June 2013. We analyzed the hashtags through content analysis, focusing on functions, and co-occurrences. We also qualitatively analyzed a group of 500 most retweeted tweets to understand the users’ tagging behavior. Our results show how users appropriate tags to accomplish different effects on the narrative of the protests

65-micron thin monocrystalline silicon solar cell technology allowing 12-fold reduction in silicon usage

Thin (<70 micron) single crystal silicon solar cells have been manufactured through the use of a novel process involving selective etching. Narrow grooves are micromachined through the wafer using a standard micromachining technique with cells manufactured on the resulting silicon strips. These bifacial cells have a much greater surface area than the original wafer, leading to dramatic decreases in processing effort and silicon usage. Individual cells fabricated using the new process have displayed efficiencies up to 17.5% while a 560cm2 prototype module has displayed an efficiency of 12.3%. The size, thickness and bifacial nature of the cells offer the opportunity for a wide variety of module architectures and applications

Theses and dissertations on the geology of Oregon : bibliography and index, 1899-1982

The present bibliography is the third compilation by the Oregon Department of Geology and Mineral Industries (DOGAMI) of theses and dissertations containing information on the geology of the state. It follows and incorporates the Bibliography of Theses on Oregon Geology by H.G. Schlicker (DOGAMI Miscellaneous Paper 7, 1959) and the Bibliography of Theses and Dissertations on Oregon Geology from January 1, 1959 to December 31, 1965, by M. Roberts (Supplement to DOGAMI Miscellaneous Paper 7, 1966). The considerable in­crease in the number of titles, from 137 in Schlicker and 70 in Roberts to the present 662 titles, reflects both the welcome growth of geologic study of the state and renewed attempts to improve the completeness of the older bibliographies. The years "1899-1982" in the title are meant to indicate that the listed titles are dated within this time span. We have not found any thesis dated before 1899; and we know that theses completed in most recent years, especially 1982, did not all come to our attention before this bibliography went to press. This compilation consists of an alphabetic list by author and an index map. Entries are numbered in sequence, and the index map is keyed to those numbers. For most theses, the numbers are placed on the map, as exactly as practicable, in the coun­ties, quadrangles, or quadrangle portions of the respective study areas. In those cases where the study area is too large or where the subject cannot be located geographically, the thesis numbers are listed under a few index categories on the map margin. The DOGAMI library maintains a growing collection of significant theses and dissertations for in-house use. About 56 percent of the titles listed here are currently in this collection. Abstracts of new acquisitions are periodically printed in DOGAMI's monthly magazine Oregon Geology. Apart from access through the libraries of degree-granting institutions, copies of many doctoral dissertations and a growing number of master's theses are available from University Microfilms Inter-national at Ann Arbor, Michigan. The compilation of this bibliography has been aided con­siderably by the information supplied by a great many geosci­ence departments in colleges and universities across the coun­try. We are deeply grateful to all of them for their cooperation

Beyond the Refugee Crisis how the UK news media represent asylum seekers across national boundaries

Migration is one of the most pressing, divisive issues in global politics today, and media play a crucial role in how communities understand and respond. This study examines how UK newspapers (n = 974) and popular news websites (n = 1044) reported on asylum seekers throughout 2017. It contributes to previous literature in two important ways. First, by examining the ‘new normal’ of daily news coverage in the wake of the 2015 ‘refugee crisis’ in Europe. Second, by looking at how asylum seekers from different regions are represented. The content analysis finds significant variations in how asylum seekers are reported, including terminology use and topics they are associated with. The paper also identifies important commonalities in how all asylum seekers are represented - most notably, the dominance of political elites as sources across all media content. It argues that Entman’s ‘cascade network model’ can help to explain this, with elites in one country able to influence transnational reports

Cues and knowledge structures used by mental-health professionals when making risk assessments

Background: Research into mental-health risks has tended to focus on epidemiological approaches and to consider pieces of evidence in isolation. Less is known about the particular factors and their patterns of occurrence that influence clinicians’ risk judgements in practice. Aims: To identify the cues used by clinicians to make risk judgements and to explore how these combine within clinicians’ psychological representations of suicide, self-harm, self-neglect, and harm to others. Method: Content analysis was applied to semi-structured interviews conducted with 46 practitioners from various mental-health disciplines, using mind maps to represent the hierarchical relationships of data and concepts. Results: Strong consensus between experts meant their knowledge could be integrated into a single hierarchical structure for each risk. This revealed contrasting emphases between data and concepts underpinning risks, including: reflection and forethought for suicide; motivation for self-harm; situation and context for harm to others; and current presentation for self-neglect. Conclusions: Analysis of experts’ risk-assessment knowledge identified influential cues and their relationships to risks. It can inform development of valid risk-screening decision support systems that combine actuarial evidence with clinical expertise