624 research outputs found
Mimicking news: how the credibility of an established tabloid is used when disseminating racism
This article explores the mimicking of tabloid news as a form of covert racism, relying on the credibility of an established tabloid newspaper. The qualitative case study focuses on a digital platform for letters to the editor, operated without editorial curation pre-publication from 2010 to 2018 by one of Denmark's largest newspapers, Ekstra Bladet. A discourse analysis of the 50 most shared letters to the editor on Facebook shows that nativist, far-right actors used the platform to disseminate fear-mongering discourses and xenophobic conspiracy theories, disguised as professional news and referred to as articles. These processes took place at the borderline of true and false as well as racist and civil discourse. At this borderline, a lack of supervision and moderation coupled with the openness and visual design of the platform facilitated new forms of covert racism between journalism and user-generated content
Algorithms, Interfaces, and the Circulation of Information: Interrogating the Epistemological Challenges of Facebook
As social and political life increasingly takes place on social network sites, new epistemological questions have emerged. How can information disseminated through new media be understood and disentangled? How can potential hidden agendas or sources be identified? And what mechanisms govern what and how information is presented to the user? By drawing on existing research on the algorithms and interfaces underlying social network sites, this paper provides a discussion of Facebook and the epistemological challenges, potentials, and questions raised by the platform. The paper specifically discusses the ways in which interfaces shape how information can be accessed and processed by different kinds of users as well as the role of algorithms in pre-selecting what appears as representable information. A key argument of the paper is that Facebook, as a complex socio-technical network of human and non-human actors, has profound epistemological implications for how information can be accessed, understood, and circulated. In this sense, the user's potential acquisition of information is shaped and conditioned by the technological structure of the platform. Building on these arguments, the paper suggests that new epistemological challenges deserve more scholarly attention, as they hold wide implications for both researchers and users
‘Stop Fake Hate Profiles on Facebook’: Challenges for crowdsourced activism in social media
This research examines how activists mobilise against fake hate profiles on Facebook. Based on six months of participant observation, this paper demonstrates how Danish Facebook users organised to combat fictitious Muslim profiles that spurred hatred against ethnic minorities. Crowdsourced action by Facebook users is insufficient as a form of sustainable resistance against fake hate profiles. A viable solution would require social media companies, such as Facebook, to take responsibility in the struggle against fake content used for political manipulation
Spin excitations of magnetoelectric LiNiPO in multiple magnetic phases
Spin excitations of magnetoelectric LiNiPO are studied by infrared
absorption spectroscopy in the THz spectral range as a function of magnetic
field through various commensurate and incommensurate magnetically ordered
phases up to 33\,T. Six spin resonances and a strong two-magnon continuum are
observed in zero magnetic field. Our systematic polarization study reveals that
some of the excitations are usual magnetic-dipole active magnon modes, while
others are either electromagnons, electric-dipole active, or magnetoelectric,
both electric- and magnetic-dipole active spin excitations. Field-induced
shifts of the modes for all three orientations of the field along the
orthorhombic axes allow us to refine the values of the relevant exchange
couplings, single-ion anisotropies, and the Dzyaloshinskii-Moriya interaction
on the level of a four-sublattice mean-field spin model. This model also
reproduces the spectral shape of the two-magnon absorption continuum, found to
be electric-dipole active in the experiment
Cloaked Facebook pages: Exploring fake Islamist propaganda in social media
This research analyses cloaked Facebook pages that are created to spread political propaganda by cloaking a user profile and imitating the identity of a political opponent in order to spark hateful and aggressive reactions. This inquiry is pursued through a multi-sited online ethnographic case study of Danish Facebook pages disguised as radical Islamist pages, which provoked racist and anti-Muslim reactions as well as negative sentiments towards refugees and immigrants in Denmark in general. Drawing on Jessie Daniels’ critical insights into cloaked websites, this research furthermore analyses the epistemological, methodological and conceptual challenges of online propaganda. It enhances our understanding of disinformation and propaganda in an increasingly interactive social media environment and contributes to a critical inquiry into social media and subversive politics
A Secure Grid Medical Data Manager Interfaced to the gLite Middleware
International audienceThe medical community is producing and manipulating a tremendous volume of digital data for which computerized archiving, processing and analysis is needed. Grid infrastructures are promising for dealing with challenges arising in computerized medicine but the manipulation of medical data on such infrastructures faces both the problem of interconnecting medical information systems to Grid middlewares and of preserving patients' privacy in a wide and distributed multi-user system. These constraints are often limiting the use of Grids for manipulating sensitive medical data. This paper describes our design of a medical data management system taking advantage of the advanced gLite data management services, developed in the context of the EGEE project, to fulfill the stringent needs of the medical community. It ensures medical data protection through strict data access control, anonymization and encryption. The multi-level access control provides the flexibility needed for imple! menting complex medical use-cases. Data anonymization prevents the exposure of most sensitive data to unauthorized users, and data encryption guarantees data protection even when it is stored at remote sites. Moreover, the developed prototype provides a Grid storage resource manager (SRM) interface to standard medical DICOM servers thereby enabling transparent access to medical data without interfering with medical practice
Platformed antagonism: Racist discourses on fake Muslim Facebook pages
This research examines how fake identities on social media create
and sustain antagonistic and racist discourses. It does so by
analysing 11 Danish Facebook pages, disguised as Muslim
extremists living in Denmark, conspiring to kill and rape Danish
citizens. It explores how anonymous content producers utilise
Facebook’s socio-technical characteristics to construct, what we
propose to term as, platformed antagonism. This term refers to
socio-technical and discursive practices that produce new modes
of antagonistic relations on social media platforms. Through a
discourse-theoretical analysis of posts, images, ‘about’ sections
and user comments on the studied Facebook pages, the article
highlights how antagonism between ethno-cultural identities is
produced on social media through fictitious social media
accounts, prompting thousands of user reactions. These findings
enhance our current understanding of how antagonism and
racism are constructed and amplified within social media
environments
The Magnetoelastic Distortion of Multiferroic BiFeO in the Canted Antiferromagnetic State
Using THz spectroscopy, we show that the spin-wave spectrum of multiferroic
BiFeO in its high-field canted antiferromagnetic state is well described by
a spin model that violates rhombohedral symmetry. We demonstrate that the
monoclinic distortion of the canted antiferromagnetic state is induced by the
single-ion magnetoelastic coupling between the lattice and the two nearly
anti-parallel spins. The revised spin model for BiFeO contains two new
single-ion anisotropy terms that violate rhombohedral symmetry and depend on
the direction of the magnetic field.Comment: 28 pages (main & supplementary), 2 figures (main article), 15 figures
(supplementary material
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