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Abstract Two simple media for the enhancement of pigment production by certain organisms of the Pseudomonas genus are described. The results of comparative studies employing these media, certain synthetic broths, and some commonly used dehydrated preparations are reported. One hundred (93 per cent) of the 107 strains of Pseudomonas studied were detected by pigment production on medium B; all 107 strains could be detected by the combined use of Heart Infusion agar and 27 per cent on Tryptose agar. The reactions produced strains elaborated a water-soluble pigment; 40 per cent were positive on Difco media A and B. On Difco Proteose peptone No. 3 agar, 77 per cent of the same on the two media by organisms belonging to certain other genera are described.
Contents: Preface. M. McCombs, A. Reynolds, News Influence on Our Pictures of the World. D. Zillmann, Exemplification Theory of Media Influence. G. Gerbner, L. Gross, M. Morgan, N. Signorielli, J. Shanahan, Growing up With Television: Cultivation Processes. L.J. Shrum, Media Consumption and Perceptions of Social Reality: Effects and Underlying Processes. D.R. Roskos-Ewoldsen, B. Roskos-Ewoldsen, F.R.D. Carpentier, Media Priming: A Synthesis. A. Bandura, Social Cognitive Theory of Mass Communication. R.E. Petty, J.R. Priester, P. Brinol, Mass Media Attitude Change: Implications of the Elaboration Likelihood Model of Persuasion. E.M. Rogers, Intermedia Processes and Powerful Media Effects. D.M. McLeod, G.M. Kosicki, J.M. McLeod, Resurveying the Boundaries of Political Communication Effects. G.G. Sparks, C.W. Sparks, Effects of Media Violence. J. Cantor, Fright Reactions to Mass Media. R.J. Harris, C.L. Scott, Effects of Sex in the Media. B.S. Greenberg, D. Mastro, J.E. Brand, Minorities and the Mass Media: Television Into the 21st Century. D.W. Stewart, P. Pavlou, S. Ward, Media Influences on Marketing Communications. S.M. Fisch, Vast Wasteland or Vast Opportunity?: Effects of Educational Television on Children's Academic Knowledge, Skills, and Attitudes. R.E. Rice, C.K. Atkin, Communication Campaigns: Theory, Design, Implementation, and Evaluation. J.D. Brown, K. Walsh-Childers, Effects of Media on Personal and Public Health. R.M. Perloff, The Third-Person Effect. M.B. Oliver, Individual Differences in Media Effects. A.M. Rubin, The Uses-and-Gratifications Perspective of Media Effects. J. Bryant, D. Miron, Entertainment as Media Effect. N. Mundorf, K.R. Laird, Social and Psychological Effects of Information Technologies and Other Interactive Media.
BACKGROUND: The combined thickness of the intima and media of the carotid artery is associated with the prevalence of cardiovascular disease. We studied the associations between the thickness of the carotid-artery intima and media and the incidence of new myocardial infarction or stroke in persons without clinical cardiovascular disease. METHODS: Noninvasive measurements of the intima and media of the common and internal carotid artery were made with high-resolution ultrasonography in 5858 subjects 65 years of age or older. Cardiovascular events (new myocardial infarction or stroke) served as outcome variables in subjects without clinical cardiovascular disease (4476 subjects) over a median follow-up period of 6.2 years. RESULTS: The incidence of cardiovascular events correlated with measurements of carotid-artery intima-media thickness. The relative risk of myocardial infarction or stroke increased with intima-media thickness (P<0.001). The relative risk of myocardial infarction or stroke (adjusted for age and sex) for the quintile with the highest thickness as compared with the lowest quintile was 3.87 (95 percent confidence interval, 2.72 to 5.51). The association between cardiovascular events and intima-media thickness remained significant after adjustment for traditional risk factors, showing increasing risks for each quintile of combined intima-media thickness, from the second quintile (relative risk, 1.54; 95 percent confidence interval, 1.04 to 2.28), to the third (relative risk, 1.84; 95 percent confidence interval, 1.26 to 2.67), fourth (relative risk, 2.01; 95 percent confidence interval, 1.38 to 2.91), and fifth (relative risk, 3.15; 95 percent confidence interval, 2.19 to 4.52). The results of separate analyses of myocardial infarction and stroke paralleled those for the combined end point. CONCLUSIONS: Increases in the thickness of the intima and media of the carotid artery, as measured noninvasively by ultrasonography, are directly associated with an increased risk of myocardial infarction and stroke in older adults without a history of cardiovascular disease.
Part 1 Theory: immediacy, hypermediacy and remediation mediation and remediation networks of remediation. Part 2 Media: computer games digital photography photorealistic graphics digital art film virtual reality mediated spaces television the World Wide Web ubiquitous computing convergence. Part 3 Self: the remediated self the virtual self the networked self conclusion.
Social media for news consumption is a double-edged sword. On the one hand, its low cost, easy access, and rapid dissemination of information lead people to seek out and consume news from social media. On the other hand, it enables the wide spread of \fake news", i.e., low quality news with intentionally false information. The extensive spread of fake news has the potential for extremely negative impacts on individuals and society. Therefore, fake news detection on social media has recently become an emerging research that is attracting tremendous attention. Fake news detection on social media presents unique characteristics and challenges that make existing detection algorithms from traditional news media ine ective or not applicable. First, fake news is intentionally written to mislead readers to believe false information, which makes it difficult and nontrivial to detect based on news content; therefore, we need to include auxiliary information, such as user social engagements on social media, to help make a determination. Second, exploiting this auxiliary information is challenging in and of itself as users' social engagements with fake news produce data that is big, incomplete, unstructured, and noisy. Because the issue of fake news detection on social media is both challenging and relevant, we conducted this survey to further facilitate research on the problem. In this survey, we present a comprehensive review of detecting fake news on social media, including fake news characterizations on psychology and social theories, existing algorithms from a data mining perspective, evaluation metrics and representative datasets. We also discuss related research areas, open problems, and future research directions for fake news detection on social media.
In this book Lev Manovich offers the first systematic and rigorous theory of new He places new media within the histories of visual and media cultures of the last few centuries. He discusses new media's reliance on conventions of old media, such as the rectangular frame and mobile camera, and shows how new media works create the illusion of reality, address the viewer, and represent space. He also analyzes categories and forms unique to new media, such as interface and database. Manovich uses concepts from film theory, art history, literary theory, and computer science and also develops new theoretical constructs, such as cultural interface, spatial montage, and cinegratography. The theory and history of cinema play a particularly important role in the book. Among other topics, Manovich discusses parallels between the histories of cinema and of new media, digital cinema, screen and montage in cinema and in new media, and historical ties between avant-garde film and new media. -- Publisher's website.
Part I. Introduction: 1. The media equation Part II. Media and Manners: 2. Politeness 3. Interpersonal distance 4. Flattery 5. Judging others and ourselves Part III. Media and Personality: 6. Personality of characters 7. Personality of interfaces 8. Imitating a personality Part IV. Media and emotion: 9. Good versus bad 10. Negativity 11. Arousal Part V. Media and Social Roles: 12. Specialists 13. Teammates 14. Gender 15. Voices 16. Source orientation Part VI. Media and Form: 17. Image size 18. Fidelity 19. Synchrony 20. Motion 21. Scene changes 22. Subliminal images Part VII. Final Words: 23. Conclusions about the media equation References.
This reissue of Understanding Media marks thirtieth anniversary (1964-1994) of Marshall McLuhan's classic expose on state of then emerging phenomenon of mass media. Terms and phrases such as the global village and the medium is message are now part of lexicon, and McLuhan's theories continue to challenge our sensibilities and our assumptions about how and what we communicate. There has been a notable resurgence of interest in McLuhan's work in last few years, fueled by recent and continuing conjunctions between cable companies and regional phone companies, appearance of magazines such as WiRed, and development of new media models and information ecologies, many of which were spawned from MIT's Media Lab. In effect, media now begs to be redefined. In a new introduction to this edition of Understanding Media, Harper's editor Lewis Lapham reevaluates McLuhan's work in light of technological as well as political and social changes that have occurred in last part of this century.
Henry Jenkins, former professor of humanities, MIT, is one of the leading science authorities in the analysis of New Media. Today, he is Professor of Communication, Journalism, and Cinematic Arts at USC. In this dialogue, Jenkins explains how technology is transforming the traditional view of humanities. He outlines his vision of convergence culture in his book, <italic>Convergence Culture: Where Old and New Media Collide</italic>. He explains why he thinks the idea of copyright is an aberration. He goes on to relate the causes for conglomerates losing control of media flows and how to deal with this situation. He describes the new logic framework under which our current participatory culture is run. He defines himself in this dialogue as a critical utopian trying to demonstrate how to harness the great power that changes taking place in new media have on people. Emphasizing the ‘new social skills’, which bring about new forms of ethics, interactions, politics, types of economic activities and legal culture, in the clash between the new digital media and the old <italic>mass media.</italic>
Building on a survey of media institutions in eighteen West European and North American democracies, Hallin and Mancini identify the principal dimensions of variation in media systems and the political variables which have shaped their evolution. They go on to identify three major models of media system development (the Polarized Pluralist, Democratic Corporatist and Liberal models) to explain why the media have played a different role in politics in each of these systems, and to explore the forces of change that are currently transforming them. It provides a key theoretical statement about the relation between media and political systems, a key statement about the methodology of comparative analysis in political communication and a clear overview of the variety of media institutions that have developed in the West, understood within their political and historical context.
Traditionally, consumers used the Internet to simply expend content: they read it, they watched it, and they used it to buy products and services. Increasingly, however, consumers are utilizing platforms-such as content sharing sites, blogs, social networking, and wikis-to create, modify, share, and discuss Internet content. This represents the social media phenomenon, which can now significantly impact a firm's reputation, sales, and even survival. Yet, many executives eschew or ignore this form of media because they don't understand what it is, the various forms it can take, and how to engage with it and learn. In response, we present a framework that defines social media by using seven functional building blocks: identity, conversations, sharing, presence, relationships, reputation, and groups. As different social media activities are defined by the extent to which they focus on some or all of these blocks, we explain the implications that each block can have for how firms should engage with social media. To conclude, we present a number of recommendations regarding how firms should develop strategies for monitoring, understanding, and responding to different social media activities. © 2011 Kelley School of Business, Indiana University.
"Multimodal Discourse outlines a new theory of communication for the age of interactive multimedia. Over the years, our everyday life has exploded with a diversity of communicative modes - language, image, music, sound, texture and gesture. Where before one form of communication was used to express meaning, multimodality now surrounds us with a vast array of modes acting interactively and separately in order to 'speak' to us." "Drawing on a wide range of examples, Kress and Van Leeuwen outline an approach to social discourse in which colour plays a role equal to language, and show how two kinds of thought processes interact in the design and production of communicative messages: 'design thinking' and 'production thinking', the kind of thinking which occurs in direct interaction with the materials and media used. Above all the authors stress communicative practice and interactivity. Their question throughout is: how do people use communicative modes and media in actual, concrete, interactive instances of communicative practice?" "This book is a text for courses in language, media and communication willing to take on the theoretical challenges posed by multimodality, multimedia and multi-skilling, and it provides inspiring theoretical input for courses in interactive multimedia design."--BOOK JACKET.
Following the 2016 US presidential election, many have expressed concern about the effects of false stories (“fake news”), circulated largely through social media. We discuss the economics of fake news and present new data on its consumption prior to the election. Drawing on web browsing data, archives of fact-checking websites, and results from a new online survey, we find: 1) social media was an important but not dominant source of election news, with 14 percent of Americans calling social media their “most important” source; 2) of the known false news stories that appeared in the three months before the election, those favoring Trump were shared a total of 30 million times on Facebook, while those favoring Clinton were shared 8 million times; 3) the average American adult saw on the order of one or perhaps several fake news stories in the months around the election, with just over half of those who recalled seeing them believing them; and 4) people are much more likely to believe stories that favor their preferred candidate, especially if they have ideologically segregated social media networks.
Media discourse and public opinion are treated as two parallel systems of constructing meaning. This paper explores their relationship by analyzing the discourse on nuclear power in four general audience media: television news coverage, newsmagazine accounts, editorial cartoons, and syndicated opinion columns. The analysis traces the careers of different interpretive packages on nuclear power from 1945 to the present. This media discourse, it is argued, is an essential context for understanding the formation of public opinion on nuclear power. More specifically, it helps to account for such survey results as the decline in support for nuclear power before Three Mile Island, a rebound after a burst of media publicity has died out, the gap between general support for nuclear power and support for a plant in one's own community, and the changed relationship of age to support for nuclear power from 1950 to the present.
ABSTRACT I quantitatively measure the interactions between the media and the stock market using daily content from a popular Wall Street Journal column. I find that high media pessimism predicts downward pressure on market prices followed by a reversion to fundamentals, and unusually high or low pessimism predicts high market trading volume. These and similar results are consistent with theoretical models of noise and liquidity traders, and are inconsistent with theories of media content as a proxy for new information about fundamental asset values, as a proxy for market volatility, or as a sideshow with no relationship to asset markets.
Electrical Engineering/Electromagnetics Waves and Fields in Inhomogeneous Media A Volume in the IEEE Press Series on Electromagnetic Waves Donald G. Dudley, Series Editor ".it is one of the best wave propagation treatments to appear in many years." Gerardo G. Tango, CPG, Consulting Seismologist-Acoustician, Covington, LA This comprehensive text thoroughly covers fundamental wave propagation behaviors and computational techniques for waves in inhomogeneous media. The author describes powerful and sophisticated analytic and numerical methods to solve electromagnetic problems for complex media and geometry as well. Problems are presented as realistic models of actual situations which arise in the areas of optics, radio wave propagation, geophysical prospecting, nondestructive testing, biological sensing, and remote sensing.
A unified treatment of the mechanics of deformation and acoustic propagation in porous media is presented, and some new results and generalizations are derived. The writer's earlier theory of deformation of porous media derived from general principles of nonequilibrium thermodynamics is applied. The fluid-solid medium is treated as a complex physical-chemical system with resultant relaxation and viscoelastic properties of a very general nature. Specific relaxation models are discussed, and the general applicability of a correspondence principle is further emphasized. The theory of acoustic propagation is extended to include anisotropic media, solid dissipation, and other relaxation effects. Some typical examples of sources of dissipation other than fluid viscosity are considered.
In this 'new media age' the screen has replaced the book as the dominant medium of communication. This dramatic change has made image, rather than writing, the centre of communication. In this groundbreaking book, Gunther Kress considers the effects of a revolution that has radically altered the relationship between writing and the book. Taking into account social, economic, communication and technological factors, Kress explores how these changes will affect the future of literacy. Kress considers the likely larger-level social and cultural effects of that future, arguing that the effects of the move to the screen as the dominant medium of communication will produce far-reaching shifts in terms of power - and not just in the sphere of communication. The democratic potentials and effects of the new information and communication technologies will, Kress contends, have the widest imaginable consequences. Literacy in the New Media Age is suitable for anyone fascinated by literacy and its wider political and cultural implications. It will be of particular interest to those studying education, communication studies, media studies or linguistics.
Preface. Introduction. 1. Communication and Social Context. 2. The Media and the Development of Modern Societies. 3. The Rise of Mediated Interaction. 4. The Transformation of Visibility. 5. The Globalization of Communication. 6. The Re--mooring of Tradition. 7. Self and Experience in a Mediated World. 8. The Re--invention of Publicness. Notes. Index.
In recent years, social media has become ubiquitous and important for social networking and content sharing.And yet, the content that is generated from these websites remains largely untapped.In this paper, we demonstrate how social media content can be used to predict real-world outcomes.In particular, we use the chatter from Twitter.com to forecast box-office revenues for movies.We show that a simple model built from the rate at which tweets are created about particular topics can outperform market-based predictors.We further demonstrate how sentiments extracted from Twitter can be further utilized to improve the forecasting power of social media.