1,720,995 research outputs found
Dataset for spexwavepy examples
No full text<p>This is the dataset for users of spexwavpy python package. It is used for the example codes. The shared raw data is only used for study. Please do not distribute the raw data. If you would like to use these raw data for publication and so on, please contact the authors of this package.</p>
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
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
Supplemental Material, sj-pdf-1-arx-10.1177_17298806231157339 - Configuration design and grasping contact accuracy analysis of a four-finger manipulator used for grasping fragile objects of elliptic cross section
No full textSupplemental Material, sj-pdf-1-arx-10.1177_17298806231157339 for Configuration design and grasping contact accuracy analysis of a four-finger manipulator used for grasping fragile objects of elliptic cross section by Dongxia Wang, Liangwen Wang, Hongchang Xie, Zhenzhen Wu, Guizhong Xie, Caidong Wang, Huadong Zheng and Zhuang Wang in International Journal of Advanced Robotic Systems</p
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
Nanometrology for synchrotron X-ray mirrors
No full textKey challenges for developing nanometrology are achieving high precision and accuracy under stringent environmental control to mitigate the impact of temperature, humidity, turbulence, and vibration. Additional complexities arise in accommodating the peculiarities of material behaviour at the nanoscale, in creating complex software to interpret large volumes of data efficiently, and in integrating various technologies within a single user-friendly instrument while managing costs and ensuring accessibility.
This thesis presents advancements in X-ray optics nanometrology using speckle-based analysis on the basis of comprehensive exploration of the full range of innovative techniques for ex situ characterisation of X-ray optics.
At the core of this research lies the intellectual challenge of obtaining successful characterisation of strongly curved X-ray mirror profiles (having radii of curvature smaller than 10m) in the form of 2D slope mapping data. The second challenge addressed in the thesis concerns providing the scientific community with an in-depth exploration and analysis of novel techniques and related metrology instrumentation. The thesis elaborates on the advancement of the mathematical models that underpin the new speckle-based metrology techniques. It also details the development of the requisite hardware and software tools.
The research commences with an in-depth background study of synchrotron X-ray mirrors and the necessity for enhanced metrology to underpin further progress at large scale science facilities, such as synchrotron light sources. A thorough literature review is presented to evaluate the existing non-contact metrology methods, including Pencil Beam Interferometer, Long Trace Profiler, Nanometre Optical Metrology, Fizeau Interferometer, and Stitching Micro-Interferometer.
The detailed study of the Speckle Angle Measurement (SAM) technique is presented. The methodology of SAM is expanded upon, including the experimental setup, data acquisition, precision, accuracy, calibration processes, and simulation. Critical analysis is presented of the principal factors influencing SAM, namely, the scanning head rotation and tilting angle of the Sample Under Test (SUT). The findings provide a solid demonstration of the effectiveness of SAM in the complete range of required capabilities, including the calibration, stability, simulation, and characterisation of various optics, including elliptical X-ray mirrors. The comparison between simulated and experimental results provides validation of the accuracy and applicability of SAM. The thesis concludes by highlighting the potential of SAM for applications such as Ion Beam Figuring at Diamond Light Source (DLS) and by highlighting further areas of research
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