324,174 research outputs found
⚘ Logic as a Liberal Art ☀ Christopher S. Morrissey
No full textHone your spirit... and come a step closer to the truth by breathing a sound intellectual order into all your knowing and doing.
This event, chaired by Yulia Nikitenko (Institute for Philosophical Studies), is part of the activities of the 2022 International Open Seminar on Semiotics: a Tribute to John Deely on the Fifth Anniversary of His Passing, cooperatively organized by the Institute for Philosophical Studies of the Faculty of Arts and Humanities of the University of Coimbra, the Lyceum Institute, the Deely Project, Saint Vincent College, the Iranian Society for Phenomenology at the Iranian Political Science Association, the International Association for Semiotics of Space and Time, the Institute for Scientific Information on Social Sciences of the Russian Academy of Sciences, the Semiotic Society of America, the American Maritain Association, the International Association for Semiotic Studies, the International Society for Biosemiotic Studies, the International Center for Semiotics and Intercultural Dialogue, Moscow State Academic University for the Humanities and the Mansarda Acesa with the support of the FCT - Foundation for Science and Technology, I.P., of the Ministry of Science, Technology and Higher Education of the Government of Portugal under the UID/FIL/00010/2020 project.
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C. S. Morrissey studied Ancient Greek and Latin at the University of British Columbia and has also taught classical mythology, ancient history, and ancient languages at Simon Fraser University, where he wrote his Ph.D. dissertation on hominization and the mimetic theory of René Girard: “Mirror of Princes: René Girard, Aristotle, and the Rebirth of Tragedy”. At the University of British Columbia, the M.A. thesis “Studies in Aristotle’s Physics” inaugurated a series of subsequent philosophical inquiries into the philosophy of nature. Other teaching has included Greek and Latin language courses for the Faculty of Philosophy at the Seminary of Christ the King located at the Benedictine monastery of Westminster Abbey in Mission, British Columbia. Major publications include the books Hesiod: Theogony / Works and Days (Talonbooks, 2012) and The Way of Logic (Nanjing Normal University Press, 2018).
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Homepage: https://www.uc.pt/fluc/uidief/act/io2s
Auditorium: https://www.uc.pt/fluc/uidief/act/io2s/auditorium
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Technical support assured by Robert Junqueira.
The cover image for the video was designed by Zahra Soltani
Synthèse sonochimique de nanomatériaux et sonocatalyse
No full textNational audienceLes traitements ultrasonores peuvent être réalisés dans une large gamme de conditions opératoires permettant ainsi de générer des effets physiques et chimiques dans des milieux aussi bien à température ambiante qu’en conditions hydrothermales.Grâce à ces spécificités, la sonochimie apparait comme une technique particulièrement intéressante pour la préparation de matériaux de nature chimique variée et permet la conception de voies de synthèses innovantes. Différents protocoles ont ainsi été développés au sein de notre laboratoire mettant notamment en œuvre la réduction sonochimique de métaux nobles mono ou bimétalliques sur des supports polymériques thermosensibles de taille contrôlée sans ajouts de réactifs. Ces matériaux ont ensuite été utilisés comme agents porogènes et vecteurs de la phase active pour la synthèse de catalyseurs supportés à porosité hiérarchique et à designs originaux [1-2]. Une autre approche que nous avons étudiée concerne l’élaboration de nanomatériaux de type cœur coquille Ti@TiO2 obtenus au cours d’un traitement sonohydrohtermal à 200 °C sous 13 bar et irradiation ultrasonore simultanée à 20 kHz. Les propriétés optiques spécifiques de ces catalyseurs ont ensuite été exploitées pour la génération d’hydrogène au cours de l’irradiation, dans le visible et le proche infrarouge, de solutions aqueuses en présence de composés organiques sacrificiels [3].L’utilisation du phénomène de cavitation acoustique ne se limite cependant pas à la synthèse de matériaux et permet également d’envisager des applications en sonocatalyse et en particulier pour les réactions d’oxydation et de dégradation des polluants organiques. En effet, la génération in situ d’espèces oxydantes réactives et peu sélectives comme les radicaux OH·, permet de considérer la sonochimie comme une technique d’oxydation avancée pour la décontamination des effluents aqueux. Cependant, les quantités de radicaux formés restent généralement faibles, de l’ordre de la µmol.min-1, et ne permettent de traiter que des effluents faiblement pollués. Ainsi, différentes études au sein de notre laboratoire ont mis en évidence que le phénomène de cavitation acoustique permettait d’activer certains catalyseurs comme Co3O4/TiO2 pour la défonctionalisation de l’EDTA ou bien d’augmenter les performances catalytique de Pt/TiO2 au cours de la minéralisation des acides carboxyliques à 40 °C en présence d’oxygène sous irradiation ultrasonore à haute fréquence [4-5].[1]. Salazar A. F. S., Chave T., Ayral A., Nikitenko S. I., Hulea V., Kooyman P. J., Tichelaar F. D., Perathoner S. et Lacroix-Desmazes P., 2016, Micropor. Mesopor. Mat., 234, 207-214.[2]. Salazar A. F. S., Chave T., Ayral A., Nikitenko S. I., Hulea V., Kooyman P. J., Tichelaar F. D., Perathoner S. et Lacroix-Desmazes P., 2018, Micropor. Mesopor. Mat., 256, 227-234.[3]. Nikitenko S.I., Chave T., Cau C., Brau H-P., Flaud V., 2015, ACS Catal., 5, 4790-4795.[4]. Chave T., Navarro N. M., Pochon P., Perkas N., Gedanken A. et Nikitenko S. I., 2015, Catal. Today, 241, 55-62[5]. L. Parizot, T. Chave, M.E. Galvez, H. Dutilleul, P. Da Costa et S. I. Nikitenko, 2019, Appl. Catal. B, 241, 570-57
Synthèse sonochimique de nanomatériaux et sonocatalyse
No full textNational audienceLes traitements ultrasonores peuvent être réalisés dans une large gamme de conditions opératoires permettant ainsi de générer des effets physiques et chimiques dans des milieux aussi bien à température ambiante qu’en conditions hydrothermales.Grâce à ces spécificités, la sonochimie apparait comme une technique particulièrement intéressante pour la préparation de matériaux de nature chimique variée et permet la conception de voies de synthèses innovantes. Différents protocoles ont ainsi été développés au sein de notre laboratoire mettant notamment en œuvre la réduction sonochimique de métaux nobles mono ou bimétalliques sur des supports polymériques thermosensibles de taille contrôlée sans ajouts de réactifs. Ces matériaux ont ensuite été utilisés comme agents porogènes et vecteurs de la phase active pour la synthèse de catalyseurs supportés à porosité hiérarchique et à designs originaux [1-2]. Une autre approche que nous avons étudiée concerne l’élaboration de nanomatériaux de type cœur coquille Ti@TiO2 obtenus au cours d’un traitement sonohydrohtermal à 200 °C sous 13 bar et irradiation ultrasonore simultanée à 20 kHz. Les propriétés optiques spécifiques de ces catalyseurs ont ensuite été exploitées pour la génération d’hydrogène au cours de l’irradiation, dans le visible et le proche infrarouge, de solutions aqueuses en présence de composés organiques sacrificiels [3].L’utilisation du phénomène de cavitation acoustique ne se limite cependant pas à la synthèse de matériaux et permet également d’envisager des applications en sonocatalyse et en particulier pour les réactions d’oxydation et de dégradation des polluants organiques. En effet, la génération in situ d’espèces oxydantes réactives et peu sélectives comme les radicaux OH·, permet de considérer la sonochimie comme une technique d’oxydation avancée pour la décontamination des effluents aqueux. Cependant, les quantités de radicaux formés restent généralement faibles, de l’ordre de la µmol.min-1, et ne permettent de traiter que des effluents faiblement pollués. Ainsi, différentes études au sein de notre laboratoire ont mis en évidence que le phénomène de cavitation acoustique permettait d’activer certains catalyseurs comme Co3O4/TiO2 pour la défonctionalisation de l’EDTA ou bien d’augmenter les performances catalytique de Pt/TiO2 au cours de la minéralisation des acides carboxyliques à 40 °C en présence d’oxygène sous irradiation ultrasonore à haute fréquence [4-5].[1]. Salazar A. F. S., Chave T., Ayral A., Nikitenko S. I., Hulea V., Kooyman P. J., Tichelaar F. D., Perathoner S. et Lacroix-Desmazes P., 2016, Micropor. Mesopor. Mat., 234, 207-214.[2]. Salazar A. F. S., Chave T., Ayral A., Nikitenko S. I., Hulea V., Kooyman P. J., Tichelaar F. D., Perathoner S. et Lacroix-Desmazes P., 2018, Micropor. Mesopor. Mat., 256, 227-234.[3]. Nikitenko S.I., Chave T., Cau C., Brau H-P., Flaud V., 2015, ACS Catal., 5, 4790-4795.[4]. Chave T., Navarro N. M., Pochon P., Perkas N., Gedanken A. et Nikitenko S. I., 2015, Catal. Today, 241, 55-62[5]. L. Parizot, T. Chave, M.E. Galvez, H. Dutilleul, P. Da Costa et S. I. Nikitenko, 2019, Appl. Catal. B, 241, 570-57
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
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
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
Author's address:
No full textCan archives of audiovisual TV interviews be used to make authors more visible to students, and thereby reduce the learning gap between native and non-native language speakers in college classes? We examined students in a college course who learned about one scholar's ideas through watching an audiovisual TV interview (i.e., visible author format) and about another scholar's ideas through reading a formal text description (i.e., invisible author format). For the invisible author, native language speakers scored significantly higher than the non-native language speakers on a corresponding exam question (i.e., a cognitive measure), generated more words on the exam question (i.e., a motivational measure), and mentioned the author's name more often in answering the exam question (i.e., an affective measure). For the visible author, the groups did not differ on any of these measures. These findings provide evidence for the idea that making the author visible through audiovisual TV interviews can eliminate the learning gap between native and non-native language speakers. 3 Universities around the world serve students who are non-native speakers of th
The vanishing author in computer-generated works: a critical analysis of recent Australian case law
No full textAbstract
The use of software is ubiquitous in the creation of many copyright works, yet the requirement in copyright law that every work have a human author who engages in independent intellectual effort means that its use may prevent copyright subsistence. Several recent Australian cases have refocused attention on authorship as an essential criterion of copyright subsistence, and these cases suggest that much computer-produced output may be authorless and thus lack copyright protection. This article, the first in a two-part series, analyses how each case deals with the question of authorship of computer-produced works and why the use of software diminishes copyright protection for a significant number of computer-generated works. The article critiques the application of conventional notions of human authorship developed in the pre-computer age to modern productions and suggests alternative approaches to authorship that satisfy both the major objectives of copyright policy and the need to adapt to the computer age. The article argues that, without a broader judicial approach to authorship of computer-generated works, Parliament must remedy the lacuna in protection for these ‘authorless’ works. Possible solutions for reform are suggested. In a forthcoming article, the author comprehensively examines those reform proposals
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