Ehsan Dehghan
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View article: Sedimented Polarisation: Discourse, Materiality, and Moderation Co-Shaping the Political Reddit
Sedimented Polarisation: Discourse, Materiality, and Moderation Co-Shaping the Political Reddit Open
This study examines political discourse across eleven major subreddits over sixteen years to understand the dynamics of cross-ideological interaction on Reddit. Through a framework combining discourse theory and new materialism, we analyse…
View article: Untangling the Furball: A Practice Mapping Approach to the Analysis of Multimodal Interactions in Social Networks
Untangling the Furball: A Practice Mapping Approach to the Analysis of Multimodal Interactions in Social Networks Open
This article introduces the analytical approach of practice mapping , using vector embeddings of network actions and interactions to map commonalities and disjunctures in the practices of social media users, as a framework for methodologic…
View article: The discursive function of Meta’s Newsroom: How Meta frames the problem of problematic online content
The discursive function of Meta’s Newsroom: How Meta frames the problem of problematic online content Open
This article examines the social technology company Meta’s public communication on problematic content, via their official ‘Meta Newsroom’, within the context of growing regulatory scrutiny. For nearly a decade, the Meta Newsroom has been …
View article: Fact-Checkers on the Fringe: Investigating Methods and Practices Associated With Contested Areas of Fact-Checking
Fact-Checkers on the Fringe: Investigating Methods and Practices Associated With Contested Areas of Fact-Checking Open
This study investigates the methods and practices used by self-identified fact-checkers situated on the fringe of the field of fact-checking to support their agenda for public recognition and legitimacy. Using a case study approach and sel…
View article: Untangling the Furball: A Practice Mapping Approach to the Analysis of Multimodal Interactions in Social Networks
Untangling the Furball: A Practice Mapping Approach to the Analysis of Multimodal Interactions in Social Networks Open
This article introduces the analytical approach of practice mapping, using vector embeddings of network actions and interactions to map commonalities and disjunctures in the practices of social media users, as a framework for methodologica…
View article: Topic Diversity in Social Media Campaigning: A Study of the 2022 Australian Federal Election
Topic Diversity in Social Media Campaigning: A Study of the 2022 Australian Federal Election Open
This study explores the diversity of topics in political campaign communication on social media during the 2022 Australian federal election. While political campaigns on social media are often associated with both persuasive and mobilising…
View article: A platform policy implementation audit of actions against Russia’s state-controlled media
A platform policy implementation audit of actions against Russia’s state-controlled media Open
The information influence of Russia's state-controlled media outlets such as RT and Sputnik on global multimillion audiences has been one of the major concerns for Western democracies and Ukraine in the last decade. With the start of the 2…
View article: ALT-PLATFORMIZATION: RADICALIZATION OF DISCOURSES AND INFORMATION FLOWS IN THE ALTERNATIVE ECOSYSTEM.
ALT-PLATFORMIZATION: RADICALIZATION OF DISCOURSES AND INFORMATION FLOWS IN THE ALTERNATIVE ECOSYSTEM. Open
This paper examines the process of radicalization on the alternative social media platform Gab, and the flow of information between Gab and other similar platforms. Corresponding to the socio-political changes and increasing polarization a…
View article: PANDEMIC POLITICS: THE 2021 AND 2022 GERMAN AND AUSTRALIAN FEDERAL ELECTION CAMPAIGNS ON SOCIAL MEDIA
PANDEMIC POLITICS: THE 2021 AND 2022 GERMAN AND AUSTRALIAN FEDERAL ELECTION CAMPAIGNS ON SOCIAL MEDIA Open
One of the effects of the continuing COVID-19 pandemic has been to further accelerate the incorporation of social media activities into political and electoral campaigning. Especially as a result of lockdowns and other restrictions to offl…
View article: Politicization and Radicalization of Discourses in the Alt-Tech Ecosystem: A Case Study on Gab Social
Politicization and Radicalization of Discourses in the Alt-Tech Ecosystem: A Case Study on Gab Social Open
With the increasing popularity of some alternative social media platforms, the flow of information has to some extent shifted from the periphery to the core, where problematic discourses are produced, reproduced, and amplified in the alter…
View article: Disinformation Risk Assessment: The online news market in Australia
Disinformation Risk Assessment: The online news market in Australia Open
The Global Disinformation Index (GDI) and the Queensland University of Technology’s Digital Media Research Centre have produced an overview of disinformation risk ratings for 34 of the most visited media sites in Australia.
View article: ‘FAKE NEWS’ AND OTHER PROBLEMATIC INFORMATION: STUDYING DISSEMINATION AND DISCOURSE PATTERNS
‘FAKE NEWS’ AND OTHER PROBLEMATIC INFORMATION: STUDYING DISSEMINATION AND DISCOURSE PATTERNS Open
Encompassed by the disputed term ‘fake news’, a variety of overtly or covertly biased, skewed, or falsified reports claiming to present factual information are now seen to constitute a critical challenge to the effective dissemination of n…
View article: ‘Fake news’ discourses
‘Fake news’ discourses Open
This article explores the strategic use of ‘fake news’ discourses in non-democratic contexts using a mixed-methods approach grounded in social network analysis and discourse theory. In contexts such as Russia and Iran, where the opposition…
View article: INVESTIGATING BOTS AND COORDINATED INFLUENCE CAMPAIGNS IN TWITTERDISCUSSIONS OF THE 2019-20 IRAN PROTESTS
INVESTIGATING BOTS AND COORDINATED INFLUENCE CAMPAIGNS IN TWITTERDISCUSSIONS OF THE 2019-20 IRAN PROTESTS Open
Twitter has been a vital platform for organizing, coordinating, and amplifying voices during protests, especially in non-democratic countries. Although it is a globally used platform for protest movements, many studies focus on English-spe…
View article: Automatic Diagnosis of Pulmonary Embolism Using an Attention-guided Framework: A Large-scale Study
Automatic Diagnosis of Pulmonary Embolism Using an Attention-guided Framework: A Large-scale Study Open
Pulmonary Embolism (PE) is a life-threatening disorder associated with high mortality and morbidity. Prompt diagnosis and immediate initiation of therapeutic action is important. We explored a deep learning model to detect PE on volumetric…
View article: FROM AD HOC ISSUE PUBLICS TO DISCOURSE COMMUNITIES: A YEAR OF PUBLIC DEBATE ON TWITTER
FROM AD HOC ISSUE PUBLICS TO DISCOURSE COMMUNITIES: A YEAR OF PUBLIC DEBATE ON TWITTER Open
This paper presents an empirical investigation of the concept of ad hoc issue publics, through a mixed-methods analysis of a year of debate over a contentious topic in the Australian public sphere. Following two controversial racial discri…
View article: Networked discursive alliances: Antagonism, agonism, and the dynamics of discursive struggles in the Australian Twittersphere
Networked discursive alliances: Antagonism, agonism, and the dynamics of discursive struggles in the Australian Twittersphere Open
This project examines the complex inter-relationship between social media and democracy, by investigating the dynamics of economic, social, and political disagreements and struggles among Twitter users in Australia. The thesis looks for wa…
View article: Investigating bots and coordinated influence campaigns in Twitter discussions of the 2019-20 Iran protests
Investigating bots and coordinated influence campaigns in Twitter discussions of the 2019-20 Iran protests Open
Twitter has been a vital platform for organizing, coordinating, and amplifying voices during protests, especially in non-democratic countries. Although it is a globally used platform for protest movements, many studies focus on English-spe…
View article: IN EACH OTHER WE (STRATEGICALLY) TRUST: THE DISCURSIVE NETWORKS OF TRUST IN TWITTER DISCUSSION OF IMMIGRATION IN AUSTRAILIA
IN EACH OTHER WE (STRATEGICALLY) TRUST: THE DISCURSIVE NETWORKS OF TRUST IN TWITTER DISCUSSION OF IMMIGRATION IN AUSTRAILIA Open
This study investigates the discourses around the topic of immigration in the Australian Twittersphere, especially with regards to the discursive role of trust in the dynamics of the debates. Methodologically, this paper draws from social …
View article: Pi-PE: A Pipeline for Pulmonary Embolism Detection using Sparsely Annotated 3D CT Images
Pi-PE: A Pipeline for Pulmonary Embolism Detection using Sparsely Annotated 3D CT Images Open
Pulmonary embolisms (PE) are known to be one of the leading causes for cardiac-related mortality. Due to inherent variabilities in how PE manifests and the cumbersome nature of manual diagnosis, there is growing interest in leveraging AI t…
View article: Pi-PE: A Pipeline for Pulmonary Embolism Detection using Sparsely\n Annotated 3D CT Images
Pi-PE: A Pipeline for Pulmonary Embolism Detection using Sparsely\n Annotated 3D CT Images Open
Pulmonary embolisms (PE) are known to be one of the leading causes for\ncardiac-related mortality. Due to inherent variabilities in how PE manifests\nand the cumbersome nature of manual diagnosis, there is growing interest in\nleveraging A…
View article: [Book Review] Chris Featherman. (2015) Discourses of Ideology and Identity: Social Media and the Iranian Election Protests
[Book Review] Chris Featherman. (2015) Discourses of Ideology and Identity: Social Media and the Iranian Election Protests Open
The use of social media platforms during the 2009 protests in Iran, and the Arab Spring uprisings enveloping several Middle Eastern countries in 2010, prompted discussions regarding the interrelationship of social media and democracy. The …
View article: In each other we (strategically) trust: The discursive networks of trust in Twitter discussions of immigration in Australia
In each other we (strategically) trust: The discursive networks of trust in Twitter discussions of immigration in Australia Open
This study investigates the discourses around the topic of immigration in the Australian Twittersphere, especially with regards to the discursive role of trust in the dynamics of the debates. Being a predominantly immigrant country, with a…
View article: Disease Detection in Weakly Annotated Volumetric Medical Images using a Convolutional LSTM Network
Disease Detection in Weakly Annotated Volumetric Medical Images using a Convolutional LSTM Network Open
We explore a solution for learning disease signatures from weakly, yet easily obtainable, annotated volumetric medical imaging data by analyzing 3D volumes as a sequence of 2D images. We demonstrate the performance of our solution in the d…
View article: Majid KhosraviNik, Discourse, Identity and Legitimacy: Self and Other in Representations of Iran’s Nuclear Programme
Majid KhosraviNik, Discourse, Identity and Legitimacy: Self and Other in Representations of Iran’s Nuclear Programme Open
Majid KhosraviNik’s timely book, Discourse, Identity, and Legitimacy: Self and Other in Representations of Iran’s Nuclear Programme, opens up a new space for discussion of Iran’s nuclear program from a perspective less focused on discursiv…
View article: FACEBOOK AS A TOOL FOR DISCURSIVE RESISTANCE: A CASE
FACEBOOK AS A TOOL FOR DISCURSIVE RESISTANCE: A CASE Open
Iran is one of the few countries in the world with laws of compulsory hijab for women, regardless of their religion. In the last couple of years, Iranian women have formed online communities to resist such laws and voice their dissent. The…
View article: CT and MRI fusion for postimplant prostate brachytherapy evaluation
CT and MRI fusion for postimplant prostate brachytherapy evaluation Open
Postoperative evaluation of prostate brachytherapy is typically performed using CT, which does not have sufficient soft tissue contrast for accurate anatomy delineation. MR-CT fusion enables more accurate localization of both anatomy and i…
View article: Facebook as a tool for discursive resistance: a case study
Facebook as a tool for discursive resistance: a case study Open
Iran is one of the few countries in the world with laws of compulsory hijab for women, regardless of their religion. In the last couple of years, Iranian women have formed online communities to resist such laws and voice their dissent. The…