322,990 research outputs found
911-2011 : penser les mondes normands médiévaux
No full text[Actes du colloque international de Caen et Cerisy-la-Salle, 29 septembre-2 octobre 2011 - Collection Symposia - Édité par David Bates, Pierre Bauduin]Issu d'un colloque international tenu à l’occasion du 11e centenaire du traité de Saint-Clair-sur-Epte, ce volume s’intéresse aux débuts du duché de Normandie et aux différents aspects de l’expansion ou de la présence des Normands dans les îles Britanniques et en Méditerranée. Il expose les interprétations données aux conquêtes, explore la formation de réseaux et la construction d’espaces, ainsi que les notions de diaspora et d’identité « normandes ».La pertinence de l’expression « monde(s) normand(s) » est discutée en soulignant son caractère à la fois singulier et pluriel, sa dimension européenne, sa valeur heuristique, capable de se dégager d’historiographies trop étroitement nationales et de remettre en question certains modèles explicatifs
« L'istoire de Bauduin de Sebourcq, en rime ».
No full textNumérisation effectuée à partir d'un document de substitution.Début : « [S]igneur, or faites pais pour Dieu le tout poissant... » A la fin (fol. 384), on lit : « Chis romans est de Bauduwin de Sebourcq ; et qui voet oïr le fin et le mort de B. se se lise che le romant dou Bastart de Buillon, car c'est ce qui s'ensiet apriés. » — Au dessous : « C'est l'istoire de Bauduin de Sebourcq, en rime, lequel est à monseigneur Charles de Croy, comte de Chimay. CHARLES.
Nanometric anions as a case study of super-chaotropes
No full textInternational audienceIonic species, such as polyoxometalates (POMs) or (metal-) boron clusters, are at the frontier between ions and (charged-)colloids due to their nm size.1a The large size and low charge density of these nano-ions, compared to classical ions, are responsible for a peculiar behavior called “super-chaotropy”.1b, 2a, 3 This property refers to the surprisingly strong propensity of nano-ions to adsorb to neutral polar interfaces and to interact with macrocycles. This property results from the dehydration of (i) the weakly hydrated nano-ions, which has a reduced enthalpic cost compared to smaller ions, and of (ii) the surface (or macrocycle). A simple experimental procedure, based on cloud point measurement, was proposed lately for evaluating and classifying nano-ions according to their super-chaotropy.1b The super-chaotropic behavior of nano-ions opens opportunities in separation science,2a catalysis, and for the design of nanostructured hybrid materials.2bReferences[1]a) A. Malinenko, A. Jonchère, S. Maynadié, L. Girard, O. Diat, P. Bauduin P. Langmuir 34(5) 2018, 2026 b) T. Buchecker, P. Schmid, S. Renaudineau, O. Diat, A. Proust, A. Pfitzner, P. Bauduin, Chem. Commun. 54(15) 2018, 1833.[2] a) B. Naskar, O. Diat, V. Rataj, P. Bauduin, J. Phys. Chem. C 119 (36) 2015, 20985. b) T. Buchecker, X. LeGoff, B. Naskar, A. Pfitzner, O. Diat, P. Bauduin, Chem. - A Eur. J. 23 2017, 8434. c) T. Buchecker, P. Schmid, I. Grillo, S. Prévost, M. Drechsler, O. Diat, A. Pfitzner, P. Bauduin, J. Am. Chem. Soc. 2019 10.1021/jacs.8b12181[3] a) K. Assaf, M. Ural, F. Pan, T. Georgiev, S. Simova, K. Rissanen, D. Gabel, W. Nau, Angew. Chem. Int. Ed. 54(23) 2015, 6852 b) Assaf, K. I.; Nau, W. M., Angew. Chem. Int. Ed. 57 (43) 2018, 13968
Nanometric anions as a case study of super-chaotropes
No full textInternational audienceIonic species, such as polyoxometalates (POMs) or (metal-) boron clusters, are at the frontier between ions and (charged-)colloids due to their nm size.1a The large size and low charge density of these nano-ions, compared to classical ions, are responsible for a peculiar behavior called “super-chaotropy”.1b, 2a, 3 This property refers to the surprisingly strong propensity of nano-ions to adsorb to neutral polar interfaces and to interact with macrocycles. This property results from the dehydration of (i) the weakly hydrated nano-ions, which has a reduced enthalpic cost compared to smaller ions, and of (ii) the surface (or macrocycle). A simple experimental procedure, based on cloud point measurement, was proposed lately for evaluating and classifying nano-ions according to their super-chaotropy.1b The super-chaotropic behavior of nano-ions opens opportunities in separation science,2a catalysis, and for the design of nanostructured hybrid materials.2bReferences[1]a) A. Malinenko, A. Jonchère, S. Maynadié, L. Girard, O. Diat, P. Bauduin P. Langmuir 34(5) 2018, 2026 b) T. Buchecker, P. Schmid, S. Renaudineau, O. Diat, A. Proust, A. Pfitzner, P. Bauduin, Chem. Commun. 54(15) 2018, 1833.[2] a) B. Naskar, O. Diat, V. Rataj, P. Bauduin, J. Phys. Chem. C 119 (36) 2015, 20985. b) T. Buchecker, X. LeGoff, B. Naskar, A. Pfitzner, O. Diat, P. Bauduin, Chem. - A Eur. J. 23 2017, 8434. c) T. Buchecker, P. Schmid, I. Grillo, S. Prévost, M. Drechsler, O. Diat, A. Pfitzner, P. Bauduin, J. Am. Chem. Soc. 2019 10.1021/jacs.8b12181[3] a) K. Assaf, M. Ural, F. Pan, T. Georgiev, S. Simova, K. Rissanen, D. Gabel, W. Nau, Angew. Chem. Int. Ed. 54(23) 2015, 6852 b) Assaf, K. I.; Nau, W. M., Angew. Chem. Int. Ed. 57 (43) 2018, 13968
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
Exploiting night-time averaged spectra from PFS/MEX shortwave channel. Part 2: Near-surface CO retrievals
No full textBecause of its important role in the Martian carbon cycle, carbon monoxide (CO) has been the subject of many measurements from ground and from space. Daytime measurements have been mostly exploited to measure the CO abundance because of their good signal-to-noise ratio, but night-time observations have not been documented yet. We demonstrate here the possibility of using PFS (Planetary Fourier Spectrometer) night-time observations to measure the Martian CO abundance. More particularly in this paper, we show that measuring CO during night with PFS can be achieved by averaging a large number of spectra to reach sufficient signal-to-noise. Furthermore, we show that the number of averaged spectra is not the only driving parameter for the detection of CO. High surface temperatures and high thermal contrast (negative in our case) are the two other conditions required for the measurement of the night-time CO abundance. Because of this, the retrievals are especially successful in the Southern Hemisphere during spring and summer when and where these two conditions are met. For night-time spectra with a positive detection, CO vertical profiles are successfully retrieved using the Optimal Estimation method and are characterized in terms of vertical sensitivity. Successful retrievals imply the use of accurate temperature profiles, and in particular an appropriate representation of the thermal inversion in the lower atmosphere. The temperature was obtained by using the relevant information from the CO2 ν3 band (Bauduin et al., 2020, this issue). A complete error budget of the retrieved CO profiles is also performed and includes different sources of uncertainty. Although the retrieved profiles are not resolved vertically, we show in particular that night-time PFS observations carry information mostly on the CO abundance for the 0–10 km altitude region, and thus provide a stronger constraint on the near-surface CO abundance compared to daytime observations
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
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