133,442 research outputs found
Proper Ferroelectricity in the Dion?Jacobson Material CsBi2Ti2NbO10: Experiment and Theory
No full textA diverse range of materials and properties are exhibited by layered perovskites. We report on the synthesis, characterization, and computational investigation of a new ferroelectric?CsBi2Ti2NbO10, an n = 3 member of the Dion?Jacobson (DJ) family. Structural studies using variable temperature neutron powder diffraction indicate that a combination of octahedral rotations and polar displacements result in the polar structure. Density functional theory calculations reveal that the wider perovskite blocks in CsBi2Ti2NbO0 stabilize proper ferroelectricity, in contrast to the hybrid-improper ferroelectricity reported for all other DJ phases. Our results raise the possibility of a new class of proper ferroelectric materials analogous to the well-known Aurivillius phases
D. Pantermalis, Dion. Musée et site archéologique
No full textDoukellis Panagiotis N. D. Pantermalis, Dion. Musée et site archéologique. In: Dialogues d'histoire ancienne, vol. 24, n°2, 1998. p. 166
An Unlimited Memeiosis of The Godfather: Diachronic and Synchronic Observations of a Pervasive and Ubiquitous Meme
No full textThis chapter is informed by its author’s intent to offer and demonstrate a novel semio-memetic model for the interpretation of Italian signs in the periphery using Francis Ford Coppola’s The Godfather (1972) as a prime example. After discussing ‘The Godfather meme’ this chapter moves beyond the constraints of the materiality of the original cultural artifact (where it originated, i.e., the Puzo text), suggesting that it has now surpassed the original idea and intent of the novel, evolved into a film trilogy, and reached its apotheosis via popular culture, where there is now a plethora of multimodal variations indexed to it. While it is true that The Godfather was and is an Italian American-based text, it has now achieved global multimodality going beyond its original ethnic connection to Italian and Italian American themes. The author concludes by stating that this text has achieved an influence usually reserved for religious and other canonical texts
W. Weischet und D. Barsch. Studien zum Problem der Deformation von Baumkronen durch Wind ; D. Barsch. Les arbres et le vent dans la vallée méridionale du Rhône
No full textDion Jean. W. Weischet und D. Barsch. Studien zum Problem der Deformation von Baumkronen durch Wind ; D. Barsch. Les arbres et le vent dans la vallée méridionale du Rhône. In: Revue Géographique de l'Est, tome 6, n°1-2, Janvier-juin 1966. pp. 223-224
Mitchell G. D.,A hundred years of sociology. Simey T. S., Social science and social purpose.
No full textDion Michel. Mitchell G. D.,A hundred years of sociology. Simey T. S., Social science and social purpose.. In: Revue française de sociologie, 1969, 10-3. pp. 396-397
Braided Learning : Illuminating Indigenous Presence through Art and Story : [book supplement]
No full textThe Truth and Reconciliation Commission and Indigenous
activism have made many Canadians uncomfortably aware
of how little they know about First Nations, Métis, and Inuit
peoples. In Braided Learning, Lenape-Potawatomi scholar
and educator Susan Dion shares her approach to learning
and teaching about Indigenous histories and perspectives.
Métis leader Louis Riel illuminated the connection between
creativity and identity in his declaration, “My people will
sleep for a hundred years, but when they awake, it will be
the artists who give them their spirits back.” Using the
power of stories and artwork, Dion offers respectful ways
to address challenging topics including treaties, the Indian
Act, the Sixties Scoop, land claims, resurgence, the drive
for self-determination, and government policies that
undermine language, culture, and traditional knowledge
systems.
Braided Learning draws on Indigenous knowledge and
world views to explain perspectives that are often missing
from the national narrative. This generous work is an
invaluable resource for Canadians trying to make sense of
a difficult past, decode unjust conditions in the present,
and work toward a more equitable future.
The documents available here are a video of Susan D. Dion
giving her historical timeline lecture (discussed in Chapter
3 of the book) and a colour supplement showing the
artworks of the Indigenous artists featured in the book
(Chapter 4). The artwork is shared by permission of the
artists. [An updated version of the colour supplement with minor revisions was uploaded on 2024-05-06.]Non UBCReviewedFacult
Inking of Immunity Episode 8. Indigenous Tattoo Revival with Dion Kaszas
No full textDion Kaszas is an Nlaka’pamux cultural tattoo practitioner and a leader in the revival of Indigenous tattooing in Canada. He has been tattooing professionally since 2009 and started the revival of Nlaka’pamux tattooing in 2012. Dion travels to National and International events, conferences, and tattoo festivals representing Indigenous tattooing in Canada.
Dion's passion for tattooing extends beyond his artistic work into the successful completion of his Masters degree in Indigenous Studies at the University of British Columbia Okanagan. His continued area of research is Indigenous tattooing, focusing keenly on the revival of Indigenous peoples tattooing practices, using Indigenous and Creative research methodologies. Since his graduation Dion has contributed to a variety of publications as author and editor.
His work has been featured in Spiritual Skin: Magical Tattoos and Scarification, Tattoo Traditions of Native North America: Ancient and Contemporary Expressions of Identity, The World Atlas of Tattoo, and highlighted in Newspaper articles from the New Zealand Herald to the CBC. In 2018, he was featured in Skindigenous, a 13-part documentary series produced in association with APTN exploring Indigenous tattooing traditions around the world.
Dion is a recipient of a Long Term Project grant through the Creating, Knowing and Sharing: The Arts and Cultures of First Nations, Inuit and Métis
Peoples component of the Canada Council for the Arts, for his project “Taking Nlaka’pamux Tattooing to the World.”
Dion acknowledges the support of the Canada Council for the Arts
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
Manipulate energy transport via fluorinated spacers towards record-efficiency 2D Dion-Jacobson CsPbI<sub>3</sub> solar cells
No full textTwo-dimensional (2D) Dion-Jacobson (D-J)-type cesium lead iodide CsPbI 3 perform remarkably in terms of stability. However, the complex interactions between spacer and inorganic layers limit its excellent progress in perovskite solar cells (PSCs). Herein, starting from the considerable structural diversity of organic spacers, we engineer 2D CsPbI 3 with fine-tuning functionalities. Specifically, for the first time we embedded fluorinated aromatic cations in 2D D-J CsPbI 3, and successfully applied it into construction of high-performance PSCs. Compared with constitutive 1,4-diaminobenzene (PDA), the fluorinated 2-fluorobenzene-1,4-diamine (F-PDA) component greatly expands the dipole moment from 0.59D to 3.47D, which reduces the exciton binding energy of the system. A theoretical study shows that the spacer layer and inorganic plane are more enriched with charge accumulation in (F-PDA)Cs n– 1Pb nI 3 n+ 1. The results show that (F-PDA)Cs n– 1Pb nI 3 n+ 1 demonstrates more significant charge transfer between organic and inorganic layers than (PDA)Cs n– 1Pb nI 3 n+ 1, and it is confirmed in the femtosecond transient absorption experiment. Moreover, the interactions of the fluorinated spacer with the [PbI 6] 4 – plane effectively manipulate the crystallization quality, and thus the ion migration and defect formation of target 2D CsPbI 3 are inhibited. As a result, we obtained a record power conversion efficiency (PCE) beyond 15% for 2D D-J (F-PDA)Cs 3Pb 4I 13 (n = 4) PSCs with significantly improved environmental stability compared with the three-dimensional (3D) counterparts. Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Photovoltaic Materials and Device
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
- …
