1,720,971 research outputs found
Soil chemistry and ITS sequences of permanent forest plots at the Station de biologie des Laurentides
No full textData of soil chemistry, ITS sequences and plots informations.
Target soil fungi using Illumina sequencing with ITS as marker gene.
15 permanent plots of forests dominated by arbuscular mycorrhizal or ectomyoccrhizal trees or both.
Located at the Station de Biologie des Laurentides, Université de Montréal.
Files :
*fastq.gz contain the sequence data for each samples
soil.csv contains soil chemistry and plots informations.
label_soil_sample.csv links identifiers for sequencing (i.e. sample) and soil analysis (i.e. sampleID)
Scripts for bioinformatical and statistical analyses can be found here: https://doi.org/10.5281/zenodo.3631982</p
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
Pseudo-Cyprien
No full textLe jeudi 9 juin 2016, à la Maison de la recherche de Paris3, rencontre autour du traité du Pseudo-Cyprien, De duodecim abusivis saeculi, avec Clémentine Bernard-Valette, Luce Carteron, Alexis Charansonnet, Caroline Chevalier-Royet, Marie-Céline Isaïa, Morgane Leclerc, Michel Perrin, Christiane Veyrard-Cosme. Le bilan bibliographique et le diagnostic sur l'édition de référence mettent en évidence la nécessité d'une nouvelle édition et d'une étude collective sur la diffusion du traité jusqu'au ..
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
La dominance mycorhizienne en tant que facteur local déterminant des processus écologiques forestiers
Get PDFL'association mycorhizienne implique nombre de plantes et de champignons, étant sans doute la symbiose mutualiste la plus importante et la plus répandue au sein des écosystèmes terrestres. Étant donné que la plupart des arbres forment des mycorhizes arbusculaires ou des ectomycorhizes qui se distinguent par leur écophysiologie, il est judicieux de caractériser les forêts en fonction de leur dominance mycorhizienne afin d'en mesurer les impacts sur les processus écologiques. Ainsi, l'objectif de cette thèse est de quantifier les influences de la dominance mycorhizienne en forêt sur les propriétés abiotiques et biotiques du sol ayant un impact à l'échelle locale sur deux processus associés : la décomposition de la matière organique et la régulation de la diversité végétale. Les forêts étudiées, de dominance mycorhizienne très contrastée, présentent des propriétés physico-chimiques et des communautés microbiennes distinctes au niveau du sol, mais des patrons de distribution verticale des microorganismes du sol d'une similarité inattendue. Dans ces forêts nordiques décidues, la décomposition de la matière organique est favorisée dans les couches supérieures du sol, notamment grâce à la présence du réseau fongique et d'autant plus lorsque les ectomycorhizes prédominent, ce qui prouve l'aspect déterminant du contexte local. L'établissement d'arbres mycorhiziens arbusculaires peut être limité par la combinaison des conditions abiotiques et biotiques édaphiques de la forêt boréale, qui est dominée par les ectomycorhizes, contrairement aux forêts à dominance partagée entre mycorhize arbusculaire et ectomycorhize, où la diversité est favorisée à l'échelle de la communauté. Cette thèse démontre le rôle déterminant, au niveau local, exercé par la dominance mycorhizienne sur les processus écologiques, et soulève l'importance de l'hétérogénéité biotique et abiotique du sol pour mieux saisir le fonctionnement des écosystèmes terrestres.Mycorrhizas, which involve plants and fungi, are probably the most important and widespread
mutual symbioses in terrestrial ecosystems. Since most trees form arbuscular mycorrhizas or
ectomycorrhizas that are ecophysiologically distinct from each other, it is useful to characterize
forests according to their mycorrhizal dominance in order to measure their respective impacts on
ecological processes. The objective of this thesis is to quantify the impacts of forest mycorrhizal
dominance on the abiotic and biotic properties of the soil, which influence at the local scale two
associated processes: the decomposition of organic matter and the maintenance of plant diversity.
The forests studied have opposite mycorrhizal dominance exhibit distinct soil physico-chemical
properties and microbial communities, but more similar vertical distribution patterns of
microorganisms than expected. Decomposition is favored by organic matter in the upper soil layers,
but also by the presence of the fungal network, especially when ectomycorrhizas predominate,
illustrating the importance of the local environmental context. Establishment of arbuscular
mycorrhizal tree may be limited by the combination of abiotic and biotic edaphic factors of the
boreal forest, which is ectomycorrhizal-dominated, in contrast to forests with shared dominance
between arbuscular mycorrhizas and ectomycorrhizas, where tree species diversity is favored at
the community level. This thesis demonstrates the decisive role, at the local scale, played by
mycorrhizal dominance on ecological processes, and raises the importance of soil biotic and abiotic
heterogeneity to better understand the functioning of terrestrial ecosystems
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
- …
