Image Analytics and the Nineteenth-Century Illustrated Newspaper

Fyfe, Paul; Ge, Qi

doi:10.22148/16.026

Cited by 7 publications

(4 citation statements)

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“…44,45 NMR spectroscopy has played a key role in trying to understand structure and reactivity relationships in the context of catalyst synthesis and post-synthetic treatments, with the observation of Al (IV) signals in the known tetrahedral 50-65 ppm region vs. Al(VI) signals near 0 ppm as the most commonly employed marker of BAS framework Al and EFAl in HZSM-5 catalysts, respectively. 38,46,47 The limitations of detecting signals from quadrupolar Al atoms in non-spherical bonding environments are well known, which is why the majority of data in the literature centers on hydrated HZSM-5 catalysts. Similarly, signals at 4.0-4.5 and 2.5-2.9 ppm in 1 H solid-state NMR spectra of dehydrated HZSM-5 have been used as indicators of hydroxyl groups on BAS and EFAl species, respectively.…”

Section: Discussionmentioning

confidence: 99%

Structure and Catalytic Characterization of a Second Framework Al(IV) Site in Zeolite Catalysts Revealed by NMR at 35.2 T

et al. 2020

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Ultra-high field 27 Al{ 1 H} 2D correlation NMR experiments demonstrate that at least two framework Al(IV) sites with hydroxyl groups can exist in acidic zeolite catalysts in their dehydrated and catalytically active states. In addition to the known Al(IV) at the framework bridging acid site (BAS), a new site created by a second tetrahedral Al atom and its hydroxyl group protons in zeolite HZSM-5 are clearly resolved at 35.2 T field strengths, enabled by recently developed series-connected hybrid (SCH) magnet technology. Coupled with computational modeling, extensive 27 Al MQMAS experiments at multiple field strengths, and 1 H MAS NMR experiments, these data indicate that this second tetrahedrally-coordinated Al site (denoted Al(IV)-2) experiences an increased chemical shift and unique quadrupolar parameters relative to the BAS in both dehydrated and hydrated states. These new experimental data, supported by computational and catalytic reaction work, indicates that the second site arises from partiallybonded framework (SiO) 4-n -Al(OH) n species that significantly increase catalyst reactivity in benzene hydride-transfer and n-hexane cracking reactions. Al(IV)-2 sites result either from framework crystallization defects or from incomplete post-synthetic hydrolysis of a framework Al, prior to the formation of extraframework Al. Populations of this second acidic proton site created by the Al(IV)-2 species are shown to be controlled via post-synthetic catalyst treatments, should be general to different catalyst structures, and significantly enhance catalyst reactivity in the cited probe reactions when they are present. The results herein communicate the highest magnetic field strength data on active zeolite catalyst structures to date and enable for the first time the detection of Al and H association on a dry HZSM-5 catalyst, i.e., under conditions representative of typical end-use processes.

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Section: Discussionmentioning

confidence: 99%

Structure and Catalytic Characterization of a Second Framework Al(IV) Site in Zeolite Catalysts Revealed by NMR at 35.2 T

et al. 2020

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“…We collated the profile images of each of the five groups to pursue exploratory visual data analysis (Fyfe and Ge, 2018;Rogers, 2013). This pixel-level analysis can uncover patterns in visual media to produce a largescale representation and offer a broad-based "situational awareness" that is otherwise inaccessible (Manovich, 2020).…”

Section: Methodsmentioning

confidence: 99%

“…In the following, we take up this task and explore the visual tropes found in IRA Twitter accounts by employing open, manual coding of the visual content (Rose, 2016) and statistical analysis of aggregate compositional, chromatic, as well as emotional or social patterns (Fyfe and Ge, 2018). Building on the above studies, we hypothesize that the IRA profiles embodied real and ordinary citizens (Arif et al, 2018), displaying cultural acuity and a sensitivity to the social identity of their targets, not only in language use (Miller, 2019), but also in their visual self-presentation with profile images (Xia et al, 2019).…”

Section: Research Aim and Questionsmentioning

confidence: 99%

Guy next door and implausibly attractive young women: The visual frames of social media propaganda

Bastos

Mercea

Goveia

2021

New Media & Society

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This study combines data analysis with multilevel processing of visual communication to classify the visual frames of state-sponsored social media propaganda. We relied on Twitter’s Election Integrity data to sample five propaganda targets of the Internet Research Agency, including Russian and American partisan groups, and explored how their operations deviated from canonical state propaganda marked by symbols of national identity and heroic masculinity. The results show that the visual frames employed by the Internet Research Agency are designed to embody the vox populi with relatable, familiar, or attractive faces of ordinary people. The results also indicate that Internet Research Agency influence operations displayed cultural acuity and familiarity with the social identity of their targets, and that the visual narrative the agency crafted trafficked primarily in the tropes of regular guys or attractive young women. We discuss these findings and argue that state-sponsored propaganda has attuned to subcultural and visual affordances of social platforms.

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“…A variety of other journals ranging from Zeitschrift für Kunstgeschicht , Visual Resources : An international journal on images and their uses , and The Journal of Interactive Technology and Pedagogy have dedicated special issues to digital art history debates, methods, and pedagogy. Historians of art are poorly represented in journals that publish broadly on digital and quantitative methods across fields, such as the Journal of Cultural Analytics , although several studies of modern and contemporary visual culture have appeared there (Fyfe & Ge, 2018; Tan et al., 2021). They are also largely absent from publications dominated by computer scientists and computational archaeologists, such as the Journal on Computing and Cultural Heritage .…”

Section: Journals and Reviewsmentioning

confidence: 99%

Digital art history in 2021

Brey

2021

History Compass

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The past decade has seen tremendous growth and innovation in the use of digital resources, methods, and tools in the history of art and architecture. While digital art history is less developed than text‐based disciplines, the emergence of new digital standards for visual and spatial data, and advances in computer vision are poised to revolutionize the field. This article provides a survey of recent developments in digital art history from the perspective of European and North American publications and conferences. I discuss the digitization of visual, spatial, and textual resources by museums, research centers, and individual researchers. Researchers have developed a variety of tools for digitally analyzing art and architecture, which can replicate or challenge traditional methods of formal, iconographic, and socio‐historical analysis. Trends in published research indicate uneven growth in the theoretical sophistication of digital art history scholarship. While digital methods are quickly moving into the training of art history professionals and students, digital art history communities in museums, research institutes, and universities remain somewhat fragmented. I conclude with a reflection on critiques of digital art history, several of which have not been fully addressed in recent scholarship.

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Image Analytics and the Nineteenth-Century Illustrated Newspaper

Cited by 7 publications

References 0 publications

Structure and Catalytic Characterization of a Second Framework Al(IV) Site in Zeolite Catalysts Revealed by NMR at 35.2 T

Structure and Catalytic Characterization of a Second Framework Al(IV) Site in Zeolite Catalysts Revealed by NMR at 35.2 T

Guy next door and implausibly attractive young women: The visual frames of social media propaganda

Digital art history in 2021

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