1,722,096 research outputs found
FIGURE 4 in A taxonomic review of the family Trachipteridae (Acanthomorpha: Lampridiformes), with an emphasis on taxa distributed in the western Pacific Ocean
No full textFIGURE 4. Trachipterus sp. (KPM 10429; 2472 mm SL). Ventral view of pelvic "slits" indicating position of the pelvic fin that is present in juveniles (white arrows). Anterior facing left.Published as part of Martin, Jennifer M. & Hilton, Eric J., 2021, A taxonomic review of the family Trachipteridae (Acanthomorpha: Lampridiformes), with an emphasis on taxa distributed in the western Pacific Ocean, pp. 301-351 in Zootaxa 5039 (3) on page 311, DOI: 10.11646/zootaxa.5039.3.1, http://zenodo.org/record/551134
Machine learning methods for analysis of organic molecular crystal structure prediction landscapes - associated data
No full textThis dataset contains the key data associated with PhD project 'Machine learning methods for analysis of organic molecular crystal structure prediction landscapes - associated data'</span
Uso comune o uso letterario della lingua? Quel che il corpus ci può mostrare
Full text linkL'utilità di nuovi strumenti tecnologici creati da e per linguisti nell'ultimo decennio rischia alle volte di rimanere sconosciuta a molti insegnanti, impegnati nella preparazione e nello svolgimento di lezioni di lingua, che devono rispettare i programmi ministeriali previsti per le scuole medie italiane. Il presente lavoro vuole invece dimostrare, con un esempio pratico, che l'utilizzo di un corpus di lingua possa essere di grande sostegno nella prassi glottodidattica indipendentemente dal tipo di approccio metodologico adottato
Machine learning methods for analysis of organic molecular crystal structure prediction landscapes
No full textThis thesis presents work on the analysis of the Crystal Structure Prediction (CSP) landscapes of organic molecules. The work presented here adapted an existing approach to identifying stabilisable crystal structures from prediction sets - the Generalised Convex Hull (GCH) [1] - such that its application to molecular crystal structures was more theoretically reasonable. A new global Smooth Overlap of Atomic Positions (SOAP) kernel to reasonably define the similarity of molecular crystal structures was developed and then used within the GCH approach - which identifiesstabilisable crystal structure candidates by using unsupervised machine learning [1]. The results were compared to those from a GCH approach that utilised a simple average SOAP kernel to assess the impact of kernel construction. The new kernel was assessed regarding three key metrics useful to materials discovery: the effectiveness of the GCH in identifying stabilisable candidates, the interpretability of machine learned (ML) descriptors derived from the kernel, and the utility of the kernel in machine learning of energies. Comparisons revealed a complex picture of results -from which a clearly superior kernel for identifying stabilisable structures could not be identified. However, the new kernel construction showed potential promise, particularly in leading to interpretable ML descriptors. Findings highlighted a sensitivity of similarity kernel based landscape analysis methods to kernel construction. A secondary project developed a proof of concept for performing fast and approximate molecular CSP by formation and optimisation of structural analogues of previously predicted crystal structures of similar molecules. Preliminary results indicated strong potential of the method in predicting the most crucial regions of the CSP landscape with greatly reduced sampling relative to quasi-random CSP approaches. This suggested that the concept is a promising area for furtherdevelopment – with some key areas for improvement being highlighted.[1]-A. Anelli, E. A. Engel, C. J. Pickard and M. Ceriotti, Phys. Rev. Mater., 2018, 2, 10380
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
FIGURE 29. Desmodema lorum Rosenblatt & Butler 1977 in A taxonomic review of the family Trachipteridae (Acanthomorpha: Lampridiformes), with an emphasis on taxa distributed in the western Pacific Ocean
No full textFIGURE 29. Desmodema lorum Rosenblatt & Butler 1977. Holotype; USNM 216726; 1098 mm SL.Published as part of Martin, Jennifer M. & Hilton, Eric J., 2021, A taxonomic review of the family Trachipteridae (Acanthomorpha: Lampridiformes), with an emphasis on taxa distributed in the western Pacific Ocean, pp. 301-351 in Zootaxa 5039 (3) on page 346, DOI: 10.11646/zootaxa.5039.3.1, http://zenodo.org/record/551134
Variations on the Author
Full text link“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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
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