1,720,959 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Écriture directe de micro et nanostructures via stéréolithographie à deux photons pour la conception d'éléments de détection à base de polymères à empreinte moléculaire
No full textMolecularly imprinted polymers (MIPs) are synthetic receptors of excellent affinity and selectivity for their targets on par with antibodies, finding applications in chemical sensing, bioimaging, catalysis, etc. As polymers, MIPs can be synthesized into various formats to better suit their applications. In this PhD thesis, we explore the use of two-photon stereolithography (TPS) for the arbitrary and precise structuring of MIPs via light manipulation within the 3D space of a polymerizable material, which is in contrast to traditional methods that typically only produce MIP particles and to other “restrained” lithographic techniques. First, we present a rich discussion on photopolymerization and the existing techniques for photostructuring MIPs, including TPS. This is followed by the application of the thiol-yne chemistry in the open-air synthesis of selective MIPs for its potential use in the open-air setup of TPS. From opals to photonic woodpiles, we exploit TPS on different photoresist formulations to optimize MIP designs. Finally, this leads to the TPS of hexagon arrays (honeycombs) with sub-micron features on commercial photoresists for their subsequent MIP functionalization via a photoiniferter. The MIP honeycombs exhibit affinity and selectivity toward their target, rendering the approach successful as a general strategy for the fabrication of sub-micron MIP sensing element designs.Les polymères à empreinte moléculaire (MIPs) sont des récepteurs synthétiques d’excellente affinité et sélectivité pour leurs cibles à l’instar des anticorps, leurs permettant de trouver des applications en détection chimique, bioimagerie, catalyse, etc. En tant que polymères, les MIPs peuvent être synthétisés en divers formats pour mieux s’adapter à leurs applications. Dans cette thèse, nous explorons l’emploi de la stéréolithographie à deux photons (TPS) pour la structuration arbitraire et précise des MIPs à travers la manipulation de lumière dans l’espace 3D d’un matériau polymérisable, contrairement aux méthodes traditionnelles qui ne produisent typiquement que des particules MIP et à d’autres techniques lithographiques « restreintes ». Tout d’abord, nous présentons une riche discussion sur la photopolymérisation et les techniques de photostructuration des MIPs, y compris la TPS. Ceci est suivi par l’application de la chimie thiol-yne dans la synthèse en plein air des MIPs sélectifs pour son utilisation potentielle dans la configuration en plein air de la TPS. Des opales aux « woodpiles » photoniques, nous exploitons la TPS sur des formulations différentes de résines photosensibles afin d’optimiser des conceptions MIP. Enfin, cela mène à la TPS des tableaux d’hexagone (nid d'abeille) de détails submicroniques à base des résines photosensibles commerciales pour leur fonctionnalisation ultérieure avec du MIP via un « photoiniferter ». Les nids d'abeilles MIP présentent de l’affinité et de la sélectivité pour leur cible, ce qui rend l'approche réussie en tant que stratégie générale pour la fabrication des conceptions submicronique des éléments de détection MIP
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Écriture directe de micro et nanostructures via stéréolithographie à deux photons pour la conception d'éléments de détection à base de polymères à empreinte moléculaire
No full textMolecularly imprinted polymers (MIPs) are synthetic receptors of excellent affinity and selectivity for their targets on par with antibodies, finding applications in chemical sensing, bioimaging, catalysis, etc. As polymers, MIPs can be synthesized into various formats to better suit their applications. In this PhD thesis, we explore the use of two-photon stereolithography (TPS) for the arbitrary and precise structuring of MIPs via light manipulation within the 3D space of a polymerizable material, which is in contrast to traditional methods that typically only produce MIP particles and to other “restrained” lithographic techniques. First, we present a rich discussion on photopolymerization and the existing techniques for photostructuring MIPs, including TPS. This is followed by the application of the thiol-yne chemistry in the open-air synthesis of selective MIPs for its potential use in the open-air setup of TPS. From opals to photonic woodpiles, we exploit TPS on different photoresist formulations to optimize MIP designs. Finally, this leads to the TPS of hexagon arrays (honeycombs) with sub-micron features on commercial photoresists for their subsequent MIP functionalization via a photoiniferter. The MIP honeycombs exhibit affinity and selectivity toward their target, rendering the approach successful as a general strategy for the fabrication of sub-micron MIP sensing element designs.Les polymères à empreinte moléculaire (MIPs) sont des récepteurs synthétiques d’excellente affinité et sélectivité pour leurs cibles à l’instar des anticorps, leurs permettant de trouver des applications en détection chimique, bioimagerie, catalyse, etc. En tant que polymères, les MIPs peuvent être synthétisés en divers formats pour mieux s’adapter à leurs applications. Dans cette thèse, nous explorons l’emploi de la stéréolithographie à deux photons (TPS) pour la structuration arbitraire et précise des MIPs à travers la manipulation de lumière dans l’espace 3D d’un matériau polymérisable, contrairement aux méthodes traditionnelles qui ne produisent typiquement que des particules MIP et à d’autres techniques lithographiques « restreintes ». Tout d’abord, nous présentons une riche discussion sur la photopolymérisation et les techniques de photostructuration des MIPs, y compris la TPS. Ceci est suivi par l’application de la chimie thiol-yne dans la synthèse en plein air des MIPs sélectifs pour son utilisation potentielle dans la configuration en plein air de la TPS. Des opales aux « woodpiles » photoniques, nous exploitons la TPS sur des formulations différentes de résines photosensibles afin d’optimiser des conceptions MIP. Enfin, cela mène à la TPS des tableaux d’hexagone (nid d'abeille) de détails submicroniques à base des résines photosensibles commerciales pour leur fonctionnalisation ultérieure avec du MIP via un « photoiniferter ». Les nids d'abeilles MIP présentent de l’affinité et de la sélectivité pour leur cible, ce qui rend l'approche réussie en tant que stratégie générale pour la fabrication des conceptions submicronique des éléments de détection MIP
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
