Mostrando recursos 1 - 20 de 8.195

  1. Review Article China and the Global Uranium Market: Prospects for Peaceful Coexistence

    Pascale Massot; Zhan-ming Chen
    License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. China’s recent reemergence has resulted in a significant increase in the global demand of commodities and is already having major impacts on the dynamics of global commodity markets. In the case of the global uranium market, we stand at the very beginning of a period of change. However, interesting trends are already emerging. Whereas China has had many policy reversals, and some difficulties in taking control of its procurement strategy in other commodity markets, it is seemingly more successful in managing its...

  2. Public Opinion on Nutrition-Related Policies to Combat

    Peer Reviewed
    We assessed public opinion on nutrition-related policies to address child obesity: a soda tax, restrictions on advertising unhealthy foods and beverages to children, and restrictions on siting fast food restaurants and convenience stores near schools. We analyzed data from 998 adults (aged ≥18 years) in the 2011 Los Angeles County Health Survey. Support was highest for advertising restrictions (74%), intermediate for a soda tax (60%), and lowest for siting restrictions on fast food restaurants and convenience stores (44 % and 37%, respectively). Support for food and beverage advertising restrictions and soda taxation is promising for future policy efforts to address...

  3. BRIEF REPORT Ambivalence about super

    cc f o on it re le to kn some stakeholders believe that SIFs promote initiation of more likely to act when public opinion is supportive of a analyses to ambivalence

  4. Background Under the Family Smoking Prevention

    Gregory N Connolly; Hillel R Alpert; Professor Gregory; N Connolly
    Administration (FDA) banned the use of “Lights” descriptors or similar terms on tobacco products that convey messages of reduced risk. Manufacturers eliminated terms explicitly stated and substituted colour name descriptors corresponding to the banned terms. This paper examines whether the tobacco industry complied with or circumvented the law and potential FDA regulatory actions. Methods Philip Morris retailer manuals, manufacturers’ annual reports filed with the Massachusetts Department of Public Health, a national public opinion survey, and market-wide cigarette sales data were examined. Results Manufacturers substituted “Gold ” for “Light” and “Silver ” for “Ultra-light ” in the names of Marlboro sub-brands,...

  5. Una crítica historiográfica a los textos y fuentes de Jenaro Abasolo Navarrete, intelectual chileno de contracorriente en el siglo XIX.

    Meyer, Ewald
    En el contexto del siglo XIX, la profusión de estudios y crítica historiográfica está destinada a los próceres intelectuales que socialmente tuvieron visibilidad a nivel de opinión publica en Chile, sin embargo, aquellos que se apartaron de la academia, opinión pública y círculos intelectuales, poco y nada han sido estudiados, incluso si poseen profundidad y aportes considerables en sus disciplinas. Es el caso de Jenaro Abasolo Navarrete y su corpus que claramente atacó una corriente hegemónica, ideológica y cultural  del siglo XIX; El positivismo. Este hecho determinó que su trabajo fuera prácticamente desconocido en la esfera cultural chilena hasta nuestros...

  6. Estereotipos y comunicación política: el imaginario social que políticos, periodistas y opinión pública poseen de sí mismos y de los demás actores

    Lanusse, Nazareno; Martino, Ignacio
    La Comunicación Política es una ciencia que proporciona un espacio en el cual los actores políticos pueden poner en debate los temas que preocupan a la opinión pública. Desde la visión del investigador francés Dominique Wolton, uno de los mayores especialistas en la materia, la comunicación política se define como “el espacio en el que se intercambian los discursos contradictorios de tres actores que poseen la legitimidad de expresarse públicamente sobre política y que son los políticos, los periodistas y la opinión pública a través de los sondeos” (2007: 387). En este marco, la presente investigación toma como unidad de...

  7. SPECIAL ARTICLE Tempest in a Tea Pot: How did the Public Conversation on Genetically Modified Crops Drift so far from the Facts?

    Daniel A. Goldstein
    Abstract The debate over genetically modified (GM) crops has raged in Europe since 1996, but had barely risen above a whisper in the USA until recent labeling debates raised public attention. This article will explain GM crops and traits discuss safety assessment provide a view on safety from authoritative organi-zations discuss selected issues of current debate, and provide the author’s perspective as to why the public debate has drifted so far from scientific reality. The economic and environmental benefits of GM crops are beyond scope, but references are provided. GM food and feed undergo comprehensive assessments using recog-nized approaches to...

  8. Benefits of Diversity, Communication Costs, and Public Opinion

    Gani Aldashev; Timoteo Carletti

  9. Estimating the Effect of Elite Communications on Public Opinion Using Instrumental Variables

    Matthew Gabel; Kenneth Scheve
    A central question in the study of democratic polities is the extent to which elite opinion about public policy shapes and potentially manipulates public opinion on those issues. Estimating the impact of elites on mass opinion is difficult because of endogeneity, omitted variables, and measurement error. This paper proposes an identification strategy for estimating the causal effect of elite messages on public support for European integration employing changes in political institutions as instrumental variables. The paper presents three main empirical results. First, we find that more negative elite messages about European integration do indeed decrease public support for Europe. Our...

  10. Questionnaire pretesting methods: Do different techniques and different organizations produce similar results. Paper presented at the Annual Meeting of the American Association for Public Opinion Research

    Westat Inc; Gordon Willis; Barbara Forsyth; Jennifer Rothgeb; Jennifer Rothgeb; U. S. Census Bureau
    Disclaimer: This report is released to inform interested parties of research and to encourage discussion. The views expressed are the author’s and not necessarily those of the U.S. Census Bureau.

  11. The royal birth of 2013: Analysing and visualising public sentiment in the uk using twitter

    Vu Dung Nguyen; Blesson Varghesea; Adam Barkera
    Abstract—Analysis of information retrieved from microblog-ging services such as Twitter can provide valuable insight into public sentiment in a geographic region. This insight can be en-riched by visualising information in its geographic context. Two underlying approaches for sentiment analysis are dictionary-based and machine learning. The former is popular for public sentiment analysis, and the latter has found limited use for aggregating public sentiment from Twitter data. The research presented in this paper aims to extend the machine learning approach for aggregating public sentiment. To this end, a framework for analysing and visualising public sentiment from a Twitter corpus is developed....

  12. Emotional reactions and the pulse of public opinion: Measuring the impact of political events on the sentiment of online discussions

    Sandra Gonzalez-bailon; Rafael E. Banchs; Andreas Kaltenbrunner

  13. 1Opinion mining of text documents written in Macedonian language

    Andrej Gajduk; Ljupco Kocarev
    guage processing, Macedonian language Abstract—The ability to extract public opinion from web portals such as review sites, social networks and blogs will enable companies and individuals to form a view, an attitude and make decisions without having to do lengthy and costly researches and surveys. In this paper machine learning techniques are used for determining the polarity of forum posts on kajgana which are written in Macedonian language. The posts are classified as being positive, negative or neutral. We test different feature metrics and classifiers and provide detailed evaluation of their participation in improving the overall performance on a manually...

  14. Identifying Users with Opposing Opinions in Twitter Debates

    Ashwin Rajadesingan; Huan Liu
    Abstract. In recent times, social media sites such as Twitter have been extensively used for debating politics and public policies. These debates span millions of tweets and numerous topics of public importance. Thus, it is imperative that this vast trove of data is tapped in order to gain insights into public opinion especially on hotly contested issues such as abortion, gun reforms etc. Thus, in our work, we aim to gauge users’ stance on such topics in Twitter. We propose ReLP, a semi-supervised framework using a retweet-based label propagation algorithm coupled with a supervised classifier to identify users with differing...

  15. Why Watching Movie Tweets Won’t Tell the Whole Story?

    Felix Ming; Fai Wong; Soumya Sen
    Data from Online Social Networks (OSNs) are providing analysts with an unprecedented access to public opinion on elections, news, movies etc. However, caution must be taken to determine whether and how much of the opinion extracted from OSN user data is indeed reflective of the opinion of the larger online population. In this work we study this issue in the context of movie reviews on Twitter and compare the opinion of Twitter users with that of the online population of IMDb and Rotten Tomatoes. We introduce new metrics to show that the Twitter users can be characteristically differ-ent from general...

  16. Noname manuscript No. (will be inserted by the editor) Twitter Sentiment Analysis: How To Hedge Your Bets In The Stock Markets

    Tushar Rao; Saket Srivastava; T. Rao; S. Srivastava; Tushar Rao; Saket Srivastava
    Abstract Emerging interest of trading companies and hedge funds in mining social web has created new avenues for intelligent systems that make use of public opinion in driving investment decisions. It is well accepted that at high frequency trading, investors are tracking memes rising up in microblogging forums to count for the public behavior as an important feature while making short term investment decisions. We investigate the complex relationship be-tween tweet board literature (like bullishness, volume, agreement etc) with the financial market instruments (like volatility, trading volume and stock prices). We have analyzed Twitter sentiments for more than 4 million...


    Moses A. Boudourides
    political opinion, social simulation. Abstract: Our aim is to review the network concept and its relevance on theories of public opinion formation. For this purpose, after discussing social and policy networks, we are reviewing certain network theories of (i) collective action and (ii) voting choices and preferred modes of political participation. Finally, we are presenting a network simulation of public opinion formation that generalizes Axelrod’s adaptive culture model and it is based on both convergent and divergent communicative processes. 1

  18. Estimating the Effect of Elite Communications on Public Opinion Using Instrumental Variables

    Matthew Gabel; Kenneth Scheve; Rafaela Dancygier; Athanassios Roussias For
    A central question in the study of democratic polities is the extent to which elite opinion about public policy shapes and potentially manipulates public opinion on those issues. Existing empirical estimates of the effect of elite communication on individual opinion formation are, however, characterized by a number of serious methodological problems, and consequently, there is little in the way of compelling evidence that elites actually influence individual opinions. This paper proposes an identification strategy for estimating the causal effect of elite messages on public support for European integration employing instrumental variable estimation. The paper presents three main empirical results. First,...

  19. El destino del diseño y el destino del país

    Ungaro, Pablo Miguel
    El presente texto constituye una ampliación de mi artículo de opinión que publicó el monopolio Clarín en la sección «Opinan 3» de la revista DNI#23 («Disociados»), bajo premisas que dan cuenta de la cadena del desánimo con la que intentan manipular a sus lectores y de la búsqueda de las grietas en todos lados. Para dicha sección, convocaron a tres diseñadores a opinar sobre las siguientes preguntas: ¿Cuáles son las razones por las que diseño y producción se mantienen disociados en la Argentina? ¿El diseñador argentino está condenado a ser un creador de prototipos? ¿La cultura artesanal atenta contra lo industrial?

  20. ´La creacion de opinion pública sobre la legalización de la marihuana: ¿conciencia social o estrategia de negocios sobre la regulación del consumo medicinal y/o recreativo de sustancias?

    Ramirez Pinzón, Jose Ernesto

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