1,720,990 research outputs found
Urban food futures : ICTs and opportunities
No full textFood is a vital foundation of all human life. It is essential to a myriad of political, socio-cultural, economic and environmental practices throughout history. However, those practices of food production, consumption, and distribution have the potential to now go through immensely transformative shifts as network technologies become increasingly embedded in every domain of contemporary life. Information and communication technologies (ICTs) are one of the key foundations of global functionality and sustenance today and undoubtedly will continue to present new challenges and opportunities for the future. As such, this Symposium will bring together leading scholars across disciplines to address challenges and opportunities at the intersection of food and ICTs in everyday urban environment. In particular, the discussion will revolve around the question: What are the key roles that network technologies play in re-shaping the food systems at micro- to macroscopic level?\ud
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The symposium will contribute a unique perspective on urban food futures through the lens of network society paradigm where ICTs enable innovations in production, organisation, and communication within society. Some of the topics addressed will include encouraging transparency in food commodity chains; value of cultural understanding and communication in global food sustainability; and technologies to social inclusion; all of which evoke and examine the question surrounding networked individuals as changes catalysts for urban food futures. The event will provide an avenue for new discussions and speculations on key issues surrounding urban food futures in the network era, with a particular focus on bottom-up micro actions that challenge the existing food systems towards a broader sociocultural, political, technological, and environmental transformations.\ud
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One central area of concern is that current systems of food production, distribution, and consumption do not ensure food security for the future, but rather seriously threaten it. With the recent unprecedented scale of urban growth and rise of middle-class, the problem continues to intensify. This situation requires extensive distribution networks to feed urban residents, and therefore poses significant infrastructural challenges to both the public and private sectors. The symposium will also address the transferability of citizen empowerment that network technologies enable as demonstrated in various significant global political transformations from the bottom-up, such as the recent Egyptian Youth Revolution. Another key theme of the discussion will be the role of ICTs (and the practices that they mediate) in fostering transparency in commodity chains. The symposium will ask what differences these technologies can make on the practices of food consumption and production.\ud
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After discussions, we will initiate an international network of food-thinkers and actors that will function as a platform for knowledge sharing and collaborations. The participants will be invited to engage in planning for the on-going future development of the network
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Breaking gender code: visibility, power, and gender in creative coding cultures
Get PDFThis project is a radically multidisciplinary examination of how gender intervenes in programming culture. Through three studies, I level a feminist challenge to the meritocracy of technology. I show how gender norms prescribe individual capacity for action, perpetuating “natural” masculine ability. By reviewing existing scholarship, I show how academia has perpetuated the narrative of a gendered difference. I explore how computational studies have quantified success and attributed women's lack of representation to feminine behavior as opposed to categorical discrimination.
In Study I, I conduct a survey into the perceptions of gender stereotypes in sites that afford anonymity. Comparing Reddit, Twitter, and 4chan, I show that gender norms dictate perceptions of hostility and technical knowledge. The exploratory analysis finds male-dominated spaces are socially read as hostile, even for men. Study II examines gender on Stack Overflow. I combine computational approaches with a non-binary inference of gender to analyse how gendered identity dictates interaction. Using social network analysis, I find that even in anonymity communities are organised by gender. I also show that the inferred gender of a user can be predicted by how they are spoken to. I conclude that Stack Overflow obscures rampant sexism behind narratives of being hostile to new users. In Study III, I observe gender performance and boundary-making at hackathons. I participate in the coding competitions to the fullest extent, programming alongside my teammates for an intensive 24-hour period. Through the sharing of memes and ironic jokes, I show that gender is the mediator of legitimate technical knowledge. I delineate how masculinity is embodied in tech start-ups and geeks to define femininity as incompatible with computers. Overall, this feminist project conducts a social structural analysis to reveal that sexism is fundamental to technology culture
Network structure, brokerage, and framing: how the internet and social media facilitate high-risk collective action
Get PDFThis thesis investigates the role of network structure, brokerage, and framing in high-risk collective action. I use the protest movement that emerged in Russia following falsified national elections in 2011 and 2012 as an empirical case study. I draw on a unique dataset of nearly 30,000 online documents and the linking structure of over 3,500 Russian Web sites. I employ a range of computational social science methods, including Exponential Random Graph Modeling, an advanced statistical model for social networks, social network analysis, machine learning, and latent semantic analysis.
I address three research questions in this thesis. The first asks if a protest network challenging a hybrid regime will have a polycentric or hierarchical structure, and if that structure changes over time. Polycentric networks are conducive to high-risk collective action and are robust to the targeted removal of key nodes, while hierarchical networks can more easily mobilize protesters and spread information. I find that the Russian protest network has a polycentric structure only at the beginning of the protests, and moves towards a less effective hierarchical structure as the movement loses popular support. The second research question seeks to understand if brokered text is actually novel, and if that text is more novel in polycentric networks than in hierarchical ones. Brokers are the individuals or nodes in a network that connect disparate groups through weak ties and close structural holes. Brokers are advantageous because they have access to and spread novel information. I find that the text among nodes in brokered relationships is indeed novel, but that information novelty decreases when networks have a hierarchical structure. The last research question asks if a protest movement in a high-risk political setting can be more successful than the government at spreading its preferred frames, and within such a movement, whether moderate or extremist framing is more prevalent. I find that the opposition is far more effective than the government in spreading its frames, even when the government organizes massive counter protests. Within the movement, moderates are more likely to have their framing adopted online than extremists, unless violence occurs at protests.
The findings suggest that movements should build flatter, more diffuse networks by ensuring that brokers tie together diverse protest constituencies. The findings also provide evidence against those who claim that authoritarian governments are more effective in shaping online discourse than oppositional movements, and also suggest that movements should advance moderate framing in order to attract a wider base of support among the general population.</p
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Commitment issues: toward an understanding of young people's social media choices in the multi-platform era
Get PDFSocial network sites (SNSs) have become a common part of everyday life for billions of people worldwide. Not everyone uses the same sites, nor are sites functionally equivalent in the eyes of users. Both established platforms and new upstarts may provide novel features or access to new audiences, yet users tend to remain on a few dominant platforms, especially Facebook, the worldâs reigning social network site. The goal of the present study is to understand why people are committed to specific social network sites, given that no site encompasses either all of a personâs social connections or all possible gratifications available from online participation. Further, individuals do not always wish to have a single real-name identity for all online interactions, thus implying the necessary use of multiple accounts or sites. To understand SNS commitment, this study employs a mixed-methods research design by combining findings from a survey of 800 respondents with 50 semi-structured interviews. The research focuses on young adults in the UK and their use of four popular SNSs: Facebook, Twitter, Instagram and Snapchat.
Findings indicate that network size has only a marginal effect on commitment, whereas the effect of identity performance is more pronounced, albeit in different ways on different sites. Social and informational gratifications have the strongest effect across all four SNSs, suggesting that commitment is primarily driven by repeated habit-forming experiences. To further help explain SNS commitment, this thesis employs a typology of social media users based on attitudes towards digital technology. It is evident that attitudes explain more variation in commitment than either demographic factors or personality. Qualitative analysis reinforces this finding by showing how users employ specific gratification-based repertoires to determine which sites to use and when. These findings help advance research on affordances, self-presentation and SNS use, while also making practical recommendations for social media platforms.</p
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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