George Barnett

George Barnett
University of California, Davis | UCD · Department of Communication

Doctor of Philosophy

About

168
Publications
73,439
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3,966
Citations

Publications

Publications (168)
Article
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The world’s first gene-edited babies event has stirred controversy on social media over the use of gene editing technology. Understanding public discussions about this controversy will provide important insights about opinions of science and facilitate informed policy decisions. This study compares public discussion topics about gene editing on Twi...
Article
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The promise of CRISPR-Cas9 (CRISPR) genomic editing applied to agriculture is promoted widely by scientists. We utilized textual analysis methods to compare perceptions of this innovation held by various stakeholder groups — scientists, policymakers, farmers, and the general public. Results reveal distinctions in the semantic structure and concepts...
Article
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The considerable amount of misinformation on social media regarding genetically modified (GM) food will not only hinder public understanding but also mislead the public to make unreasoned decisions. This study discovered a new mechanism of misinformation diffusion in the case of GM food and applied a framework of supervised machine learning to iden...
Article
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Using a social network analysis, this study explored how the structure of international tourism has changed longitudinally. The international tourism remained relatively stable from 2002 to 2014. The networks of outbound and inbound international tourism have decentralized gradually. Based on a quadratic assignment procedure (QAP) analysis, each of...
Article
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Science communication scholars have debated over what factors are related to public support for science and technology. This study examines the relationship between factual knowledge of gene editing technologies, value predispositions, and general science attitudes among four major U.S. agricultural stakeholder groups: farmers, scientists, policyma...
Conference Paper
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Vaccine misinformation online may contribute to the increase of anti-vaccine sentiment and vaccine-hesitant behaviors. Social network data was used to identify Twitter vaccine influencers, their online twitter communities, and their geolocations to determine pro-vaccine and vaccine-hesitant online communities. We explored 139,433 tweets and identif...
Article
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In the original publication, funding information was missed to update and it should read as follows.
Article
Anti-vaccine information online continues to deter optimum childhood vaccination coverage. Tweets from influential users about childhood vaccines are assessed to determine vaccine information on Twitter. Results indicate a well-connected anti-vaccine community where influential users widely share vaccine misinformation. Sentiment analysis finds neg...
Article
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CRISPR-Cas9, a recent gene editing technology, has potential to greatly impact medicine, agriculture, and the environment; therefore, it is increasingly important to understand the public’s perceptions surrounding this technology. This study examined the main themes of CRISPR during a nine-month period on Twitter through semantic network analysis....
Article
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This report describes the results of research conducted for the University of California’s Innovative Genomics Institute to determine public perceptions of CRISPR and genome editing. The goal of this research is to design a communication strategy that would, when implemented improve the public’s image of CRISPR. This research was conducted in two p...
Article
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This article reviews the opportunities and challenges for computational research methods in the field of communication. Among the social sciences, communication stands out as a discipline with a relatively low-profile institutionalized focus on the in-house development of methods. Computational tools are changing this, and they are catalyzing a new...
Chapter
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Community detection in social networks is widely studied because of its importance in uncovering how people connect and interact. However, little attention has been given to community structure in Facebook public pages. In this study, we investigate the community detection problem in Facebook newsgroup pages. In particular, to deal with the diversi...
Article
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Genome editing is an emerging socio-scientific issue. This study uses semantic network analysis to determine the concepts and frames the public is exposed to when seeking information about “genome editing” in Wikipedia and Google. Four frames were identified in Wikipedia: (1) methodology/terminology, (2) applications, (3) common approaches, and (4)...
Article
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This paper employs the patent data of four major genetically modified (GM) crops, soybeans, cotton, maize and rapeseed, to illustratee how the innovation of GM crop technology diffused and distributed globally over time. Data collected from the Derwent Innovation Index, were employed to construct country patent citation networks, from 1984 to 2015,...
Article
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Barabási (Linked: how everything is connected to everything else and what it means for business, science, and everyday life. Basic Books, New York, 2014) argues that a significant proportion of nodes can be randomly removed from any scale-free network without it breaking apart. Gao et al. (Nature 530:307–312, 2016) suggest that three additional pro...
Preprint
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Classification problems have made significant progress due to the maturity of artificial intelligence (AI). However, differentiating items from categories without noticeable boundaries is still a huge challenge for machines -- which is also crucial for machines to be intelligent. In order to study the fuzzy concept on classification, we define and...
Preprint
Community detection in social networks is widely studied because of its importance in uncovering how people connect and interact. However, little attention has been given to community structure in Facebook public pages. In this study, we investigate the community detection problem in Facebook newsgroup pages. In particular, to deal with the diversi...
Article
Full-text available
This paper examines the international trade of a variety of genetically modified (GM) food products over a 27-year period (1984–2011) with data from the United Nations using the tools of social network analysis. The results indicate that each of the different crops have a distinctive pattern of trade that has changed over time due to a number of di...
Article
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Making sound food and agriculture decisions is important for global society and the environment. Experts tend to view crop genetic engineering, a technology that can improve yields and minimize impacts on the environment, more favorably than the public. Because there is a causal relationship between public opinion and public policy, it is important...
Chapter
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Diffusion is the process by which new products, behaviors, or ideas are communicated among the members of social systems. This entry describes what is known about the process of the diffusion of innovations and the dissemination of information through the mass media. It differentiates the roles of the media (mass and digital) and interpersonal comm...
Article
This study explores inequality in global internet by looking at structure of co-mentions across global top website domains. Findings show that websites of the U.S. were central and dominant in the global content flow. The network based on the level of corporate ownership was even more centralized, in which the top 10 sites producing at least 1% of...
Chapter
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This chapter describes a number of critical issues facing the field of intercultural communication including, the discipline’s definition, power relations among various ethnic or national groups and nation-states, voice - who speaks for an ethnic group or nation-state, and globalization. But the major portion of the chapter takes a different approa...
Article
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This article describes an inter-language semantic network analysis examining the differences between articles about China in the Chinese and English versions of Wikipedia. It explores the differences in the content of Wikipedia through (a) correlation analysis of semantic networks and (b) the salience of semantic concepts through their network cent...
Article
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Daily data on the use of the world’s 425 most frequently visited websites by 118 countries were mined over the 4-month period September 1 to December 31, 2015, to create a longitudinal two-mode network (countries and websites). This paper describes the changes in the international World Wide Web (WWW), as a network, to determine the effects of unan...
Article
This study describes the evolution of the international hyperlink network. The World Wide Web is a distributed hypertext system consisting of a virtual network of content and hyperlinks with billions of interlinked pages. Since the Web has no ?engineered architecture,? it can be understood as a self-organized system with a well-defined structure of...
Article
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An important challenge in several disciplines is to understand how sudden changes can propagate among coupled systems. Examples include the synchro- nization of business cycles, population collapse in patchy ecosystems, markets shifting to a new technology platform, collapses in prices and in confidence in financial markets, and protests erupting i...
Article
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This paper explores the use of spectral or frequency domain analysis to examine network evolution and co-evolution. Given a sufficient number of measurements of a valued network over-time, a matrix (Κ) may be created, where κij is the squared coherency between nodes i and j. Since Κ is a matrix of relations, it may be analyzed like any other networ...
Article
This study describes the structure of the international Facebook friendship network and its determinants using various predictors, including physical proximity, cultural homophily, and communication. Network analysis resulted in one group of nations, with countries that bridge geographic and linguistic clusters (France, Spain, United Kingdom, and U...
Article
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This paper extends the theoretical arguments of the world-systems perspective to the emerging post-industrial society. Using survey data gathered by AT&T and published in the World's Telephones (1978-1990) and data gathered by the International Institute of Communication and published in TeleGeography (1991-1992), this paper describes the process o...
Conference Paper
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Culture is thought to be determinant of society’s framing activities. In the era of globalization, the world’s media provides a series of arena in which symbolic interactions and competitions are being carried out among various cultural groups on the macro level. Their purpose is to negotiate the reality of the perceived world and the dominant worl...
Conference Paper
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Genetically Modified Organism (GMO) controversies have been hot button issues in China, one of the largest GMO consumption countries, and have gained extensive attention from the public in recent years. Public perception and opinion about GMO technology are shaped by media to a certain degree. Overall use of social media for news consumption show...
Conference Paper
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This paper explores international relations as expressed in social media. Specifically, it examines the networks of nation-states as determined by the co-mentions of 218 countries expressed in postings on Facebook and Weibo. Co-mentions of all pairs of country names on Facebook were obtained using Google.com with a global search query: “United King...
Conference Paper
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This paper presents an application of semantic network analysis to the study of online support forums. These forums are a major source for people seeking information about depression and social support. The present study examines the themes in the online posts and comments, and the established links among the themes in comments that correspond with...
Conference Paper
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Online support forum provides a platform for information exchange and mutual support among people who face special health interests and vulnerabilities. In this study, we adopted a semantic network approach and explored the online support seeking undertaken by breast cancer patients. Previous studies found that breast cancer patients get online pri...
Article
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This paper provides a network analysis of the international flow of students among 210 countries and the factors determining the structure of this flow. Among these factors, bilateral hyperlink connections between countries and the number of telephone minutes (communication variables) are the most important predictors of the flow’s structure, follo...
Article
Hyperlink network analysis has provided an important framework for understanding the structure of the Internet/WWW. However, the inclusion of other measures provides additional information about the structure of the web. This research presents still another approach to describe the structure of the Internet/WWW by assessing the network of websites'...
Chapter
This entry provides a brief introduction to the topic of social and communication networks and their analysis. It then discusses specific applications to the study of digital social/communication networks using a two-dimensional typology for the organization of network studies of digital networks. One dimension is the size or scope of the examined...
Conference Paper
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Macro-societal structures likely affect news framing and frame dynamics in different ways in different national or cultural contexts. A semantic network analysis was conducted to investigate how national political culture shapes news frames for international political coverage. While cultural characteristics of frames used by news agencies covering...
Chapter
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This chapter provides a general introduction to social network analysis, with a particular focus on communication networks. Network analysis is a set of research methods for identifying structures in systems based on the patterns of relations among system components. It discusses the history of social network analysis, structural theory -- the para...
Conference Paper
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This paper describes a comparative study examining the effects of macro-societal structures on news framing and the convergence of news frames overtime. By conducting a semantic network analysis, it investigates how national cultures shape news frames about violence, and finds that the unique words with high centralities and unique words not presen...
Article
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This study analyzed the hyperlink (co-link) network structure among companies in global Corporate Social Responsibility (CSR) system. This study measured network variables such as density and centrality, including degree centrality, eigenvector centrality, closeness, and betweenness. The results indicated that European companies had relatively cent...
Conference Paper
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This paper is a comparative study examining the effects of macro-societal structures on news framing and frame dynamics in an international context. By conducting a semantic network analysis, it investigates how national political cultures shape news frames of international political coverage, and finds that cultural characteristics of frames used...
Article
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This paper describes the results of a multi-level network analysis of web-citations among the 1,000 universities with the greatest presence on the world wide web. Using data from January 2011, it describes the web-citation network of the world’s universities and ascertains the antecedent factors that determine its structure. At the university level...
Article
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Social media communication is characterized by reduced anonymity and off-to-online social interactions. These characteristics require scholars to revisit social influence mechanisms online. The current study builds on social influence literature to explore social network and gender effects on online behavior. Findings from a quasi-experiment sugges...
Article
This study investigates international hyperlink networks and their content in terms of the .com domain, the most ubiquitous generic top-level domain, to examine the kinds of global websites that are linked to .com, what the linked contents are, and who are dealing with the hyperlinks. The results show the hyperlink network of websites with outgoing...
Article
This research examines who controls the international Internet using a multi-level network analysis. Internet provider (IP) address ownership data obtained from TeleGeography (http://www.telegeography.com/) are used to describe the structure of the international network of private companies and Internet service providers (ISPs). The results indicat...
Conference Paper
Introduction to Network Analysis of Social and Digital Media Minitrack.
Article
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This article examines the network structure of the international internet using four different sources of data: (1) bilateral bandwidth between countries; (2) hyperlink connections among nations’ domain names; (3) structural equivalence of nations from the perspective of websites, measured by the percentage of specific websites’ traffic from indivi...
Article
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This paper explores the influences of the traditional Chinese culture on social relations in China. It provides an introduction to the concept of Guanxi, the notion that social connections are based on socially situated reciprocity. This is different from social interaction in Western society that is based on self-interest and equity. Guanxi repres...
Article
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This research examines the relationship between a country’s position in the international telecommunications (telephone and Internet) network and whether or not it is a state sponsor or a provider of sanctuary for terrorists. It also examines the structure of global news coverage of terrorism. A longitudinal analysis of international telephone call...
Article
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This research explores the structure and status of theories used in Communication as an alternative for Communication discipline identity research and characteristics evaluation. This research assumes that communication theories are not only ongoing practices of intellectual communities, but also discourse about how theory can address a range of ch...
Article
This paper reviews current knowledge about the structure of the international telecommunications network and how it has changed over time as a result of globalization, historical events, and changes in technology. It has a center-periphery structure with North America and Western Europe at the center, and less economically developed countries at th...
Article
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Introduction to the Communication and Social Networks Minitrack