Exploring the Political-Economic Factors of Participatory Journalism: Views of Online Journalists in 10 Countries

This comparative study of user-generated content (UGC) in 10 Western democracies examines the political economic aspects of citizen participation in online media, as assessed by journalists who work with this content. Drawing on interviews with more than 60 journalists, we explore their perceived economic motivations for an ongoing redefinition of traditional journalistic roles, as UGC becomes an increasingly dominant feature of news websites

Integrated spectrum of the planetary nebula NGC 7027

We present deep optical spectra of the archetypal young planetary nebula (PN) NGC 7027, covering a wavelength range from 3310 to 9160 A. The observations were carried out by uniformly scanning a long slit across the entire nebular surface, thus yielding average optical spectra for the whole nebula. A total of 937 emission features are detected. The extensive line list presented here should prove valuable for future spectroscopic analyses of emission line nebulae. The optical data, together with the archival IUE and ISO spectra, are used to probe the temperature and density structures and to determine the elemental abundances from lines produced by different excitation mechanisms. The C++/H+, N++/H+, O++/H+ and Ne++/H+ ionic abundance ratios derived from optical recombination lines (ORLs) are found to be only slightly higher than those derived from collisionally excited lines (CELs). We conclude that whatever mechanism is causing the BJ/CEL temperature discrepanies and the ORL/CEL abundance discrepancies that have been observed in many PNe, it has an insignificant effect on this bright young compact PN. The properties of the central star are also discussed. Based on the integrated spectrum and using the energy-balance method, we have derived an effective temperature of 219 000 K for the ionizing star. Finally, we report the first detection in the spectrum of this bright young PN of Raman-scattered O VI features at 6830 and 7088 A, pointing to the existence of abundant neutral hydrogen around the ionized regions. (abridged)Comment: 55 pages, 7 figures, accepted for publication in A&

Loss of consciousness as criterion of +Gz tolerance at Institute of Aviation Medicine MMA during +Gz acceleration selective test

+Gz induced loss of consciousness (G-LOC) is one of the most serious threats to aircrews flying high performance fighter aircraft. From the early beginning of use of our Centrifuge, use in selection was primary task. As a functional “endpoints” we use criteria: loss of peripheral vision, extreme pulse rate (above 180 b.p.m.), arrhythmias and loss of consciousness. The key -method in selection the candidate who tolerates +Gz stress on the best way is selec tion by common selective centrifuge “Test of linear increasing of acceleration” (TOLIA). We used gradual onset rate (GOR – 0.1 G/s) and maximum/peak value: +5.5 Gz, +6.0 Gz and 7.0 Gz. Applied peak value depends on the goal of the test. The lowest peak val ue is for candidates planned for Air Academy, higher peak value is for those pilots planned for training to supersonic combat aircrafts and the highest peak value is for pilots who are planned to fly High performance combat aircrafts. We examined 2192 cand idates in the last 20 years. Eleven subjects experienced G -LOC episodes. All episodes of G -LOC had occurred occasionally and without warning symptoms (loss of peripheral vision, gray out, blackout). The percentage of subjects having G -LOC episodes was 0.50 %. Nine subjects experienced G- LOC during primary selection (+5.5 Gz), one G -LOC were observed at secondary selection (+6.0 Gz) and one G -LOC was observed during tertiary selection (+7 Gz). G -LOC is the only “endpoint” in the centrifuge selection which dis qualifies the candidate at once and forever for planned flying duties. The other “endpoints” (loss of peripheral vision, heart rate above 180 b.p.m., arrhythmias) allow one more testing, not less than seven days later

Citizen particpation in online news media: An overview of current developments in four European countries and the United States.

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Citizen participation in online news media: an overview of current developments in four European countries and the United States

info:eu-repo/semantics/publishe

Approaches to participatory journalism: how to make sense of the consequences of a new object of study

info:eu-repo/semantics/nonPublishe

User participation in digital news: Cross-cultural studies of approaches by leading national news media

info:eu-repo/semantics/nonPublishe

The Active Recipient: Participatory Journalisme Throught the Lens of the Dewey-Lippmann Debate

info:eu-repo/semantics/nonPublishe

Exploring the political-economic factors of participatory journalism: a first look into self-reports by online journalists and editors in ten countries

info:eu-repo/semantics/publishe