1,030 research outputs found
Overview of Event Based Resources on Facebook and Twitter: Fort McMurray Wildfire, May 2016
Event Based Resources (EBR) are the web resources, named after an event. In this study, we focus on Facebook and Twitter EBRs created around the 2016 Fort McMurray wildfire. We determine the time when different EBRs were created, and were closed (if closed). We also determine if the content posted by these EBRs were relevant to the Fort McMurray wildfire. We categorize these EBRs, on the basis of their social media profile and the content posted by them, into different categories. We take a closer look at the accounts that were most well-received by the public to see if their activity (number of messages posted over the data collection timeframe) and the response they got from members of public (in terms of number of likes (on Facebook) and followers (on Twitter)) were correlated with the wildfire’s progression. We also study the Event Based Resources that were active past 2 months of wildfire being ‘under control’, i.e., after July 5, 2016
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Supporting the Social Media Needs of Emergency Public Information Officers with Human-Centered Design and Development
Emergency response agencies, which operate as command-and-control organizations, push information to members of the public with too few mechanisms to support communication flowing back. Recently, information communication technologies (ICTs) such as social media have challenged this one-way model by allowing the public to participate in emergency response in new and unexpected ways. These developments place new pressure on emergency managers to release information over social media streams, monitor online activities during an emergency event, incorporate information provided by members of the public into response efforts, and engage in the public conversation around an event. Within US emergency response organizations, public information officers (PIOs) are in a unique position to use these emerging communication technologies. PIOs are responsible for communicating official response information to members of the public during an emergency event and ensuring that the information available in the public arena is accurate and complete. In this dissertation work, I examine how social media and the forms of public participation enabled by it are changing the role of the PIO. Based on this understanding, I explore ICT solutions for the PIO through human-centered methods that include the PIO in the design process. Finally, I design, implement, and evaluate a software application informed by this work that supports the social media needs of PIOs. With the aim of improving emergency response efforts, I demonstrate how empirically-based understandings of emergency management work can inform technology design, practice, and policy. This dissertation research provides the following contributions: (1) an examination of PIOs' roles and the sociotechnical environment in which they work; (2) a new model of PIO communication that takes into account new communication pathways that have been enabled by ICT; (3) a set of requirements for supporting PIO social media communication needs; (4) the design, implementation, and evaluation of a tool--the PIO Monitoring Application--that supports the social media monitoring, documenting, reporting, and organizing needs of PIOs during an emergency event; (5) a description of the likely future role of PIOs and how that role might be supported
Best Practices in Disaster Public Communications: Evacuation Alerting and Social Media
This research project examines the current state of the practice for disaster public communication, the distrust of government, the training available to public information officers, and the literature available to guide the design of effective public outreach messaging, especially for rapid on-set events. Growing distrust in government had led to lack of public confidence in public agency messaging during emergencies, yet public agency public information officers are using multiple pathways, including both traditional and social media resources, to try to reach impacted communities effectively. The introduction explains the development of wildfire events in the West and their context. A literature review displays the sociological and political research that guides the development of public outreach, warning and evacuation. The findings display the SCU Complex Fire and CZU Complex Fire of 2020 as case studies of outreach efforts during rapid onset wildfire events and explains techniques of data scraping that could enhance public messaging. The analysis categorizes a variety of best practices in disaster communications. The project concludes with a white paper outlining a pathway toward creating a cell phone app that would provide event, time and location specific information about a disaster event, using official sources and social media
Participatory Design for the Social Media Needs of Emergency Public Information Officers
ABSTRACT This paper describes the design, execution, and results of a participatory design workshop with emergency public information officers (PIOs). During the workshop, PIOs and researchers explored ideas and designs for supporting the social media needs of PIO work. Results indicate that PIO perceptions of social media have changed as they have learned to incorporate activities of the public into their work, yet they still struggle with issues of trust and liability. Based on workshop design activities, the paper offers a set of design recommendations for supporting the social media needs of PIO work practice such as the ability to monitor, document, and report social media activity
Renewing universities in our climate emergency : Stewarding system change and transformation
This paper outlines climate emergencies facing universities and, by drawing on research on system transition, provides insights about how change to overcome the challenges might be stewarded. Climate change brings three interconnected and urgent emergencies for universities: (1) Manifest emergencies such as risks to operations and business models; (2) Conceptual emergencies that arise because assumptions, ideologies, systems and structures cannot match the scale of the manifest challenges; and (3) Existential emergencies where current identities and sense of purpose are incapable of supporting the changes needed to overcome the conceptual challenges. To be viable leaders in the world, universities will need to renew their commitments to serving the public good, be dedicated to an unwavering challenge-orientation, create post-disciplinary structures, and be the change one seeks to see in the world. Importantly, universities will need to overcome the emergencies on the inside if they are to help society address the scale of the challenges on the outside, to which both universities and human capacity are seriously cognitively and emotionally ill-prepared. Fortunately, new insights from research on system transition provide helpful advice on how to steward transformational change. This work highlights that successful transformation requires strong adherence to transformational intent and, in the case of universities, working with all three emergencies simultaneously. Successful transformation will also require harnessing opportunities to disrupt the status quo; supporting an interplay of different forms of management and orientations to the future; developing appropriate infrastructure to support transformation; and rapidly accelerating the development of capacities for transformational change. By actively developing capacities for transformation on the inside universities will then be in a much better position to help and lead others beyond the halls of the academy
Measurement of inclusive D*+- and associated dijet cross sections in photoproduction at HERA
Inclusive photoproduction of D*+- mesons has been measured for photon-proton
centre-of-mass energies in the range 130 < W < 280 GeV and a photon virtuality
Q^2 < 1 GeV^2. The data sample used corresponds to an integrated luminosity of
37 pb^-1. Total and differential cross sections as functions of the D*
transverse momentum and pseudorapidity are presented in restricted kinematical
regions and the data are compared with next-to-leading order (NLO) perturbative
QCD calculations using the "massive charm" and "massless charm" schemes. The
measured cross sections are generally above the NLO calculations, in particular
in the forward (proton) direction. The large data sample also allows the study
of dijet production associated with charm. A significant resolved as well as a
direct photon component contribute to the cross section. Leading order QCD
Monte Carlo calculations indicate that the resolved contribution arises from a
significant charm component in the photon. A massive charm NLO parton level
calculation yields lower cross sections compared to the measured results in a
kinematic region where the resolved photon contribution is significant.Comment: 32 pages including 6 figure
Effects of antiplatelet therapy on stroke risk by brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases: subgroup analyses of the RESTART randomised, open-label trial
Background
Findings from the RESTART trial suggest that starting antiplatelet therapy might reduce the risk of recurrent symptomatic intracerebral haemorrhage compared with avoiding antiplatelet therapy. Brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases (such as cerebral microbleeds) are associated with greater risks of recurrent intracerebral haemorrhage. We did subgroup analyses of the RESTART trial to explore whether these brain imaging features modify the effects of antiplatelet therapy
Surveillance of Sentinel Node-Positive Melanoma Patients with Reasons for Exclusion from MSLT-II:Multi-Institutional Propensity Score Matched Analysis
BACKGROUND: In sentinel lymph node (SLN)-positive melanoma, two randomized trials demonstrated equivalent melanoma-specific survival with nodal surveillance vs completion lymph node dissection (CLND). Patients with microsatellites, extranodal extension (ENE) in the SLN, or >3 positive SLNs constitute a high-risk group largely excluded from the randomized trials, for whom appropriate management remains unknown. STUDY DESIGN: SLN-positive patients with any of the three high-risk features were identified from an international cohort. CLND patients were matched 1:1 with surveillance patients using propensity scores. Risk of any-site recurrence, SLN-basin-only recurrence, and melanoma-specific mortality were compared. RESULTS: Among 1,154 SLN-positive patients, 166 had ENE, microsatellites, and/or >3 positive SLN. At 18.5 months median follow-up, 49% had recurrence (vs 26% in patients without high-risk features, p 3 positive SLN constitute a high-risk group with a 2-fold greater recurrence risk. For those managed with nodal surveillance, SLN-basin recurrences were more frequent, but all-site recurrence and melanoma-specific mortality were comparable to patients treated with CLND. Most recurrences were outside the SLN-basin, supporting use of nodal surveillance for SLN-positive patients with microsatellites, ENE, and/ or >3 positive SLN
Unique features of a global human ectoparasite identified through sequencing of the bed bug genome
The bed bug, Cimex lectularius, has re-established itself as a ubiquitous
human ectoparasite throughout much of the world during the past two decades.
This global resurgence is likely linked to increased international travel and
commerce in addition to widespread insecticide resistance. Analyses of the C.
lectularius sequenced genome (650 Mb) and 14,220 predicted protein-coding
genes provide a comprehensive representation of genes that are linked to
traumatic insemination, a reduced chemosensory repertoire of genes related to
obligate hematophagy, host–symbiont interactions, and several mechanisms of
insecticide resistance. In addition, we document the presence of multiple
putative lateral gene transfer events. Genome sequencing and annotation
establish a solid foundation for future research on mechanisms of insecticide
resistance, human–bed bug and symbiont–bed bug associations, and unique
features of bed bug biology that contribute to the unprecedented success of C.
lectularius as a human ectoparasite
Active surveillance of patients who have sentinel node positive melanoma:An international, multi-institution evaluation of adoption and early outcomes after the Multicenter Selective Lymphadenectomy trial II (MSLT-2)
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/168248/1/cncr33483.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/168248/2/cncr33483_am.pd
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