1,721,003 research outputs found
Physics-informed neural network for damage identification in railroad bridges
No full textSubmission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-05-01The student, Shaik Althaf Veluthedath Shajihan, accepted the attached license on 2024-04-15 at 12:19.The student, Shaik Althaf Veluthedath Shajihan, submitted this Thesis for approval on 2024-04-15 at 12:55.This Thesis was approved for publication on 2024-04-25 at 14:21.DSpace SAF Submission Ingestion Package generated from Vireo submission #20410 on 2024-09-16 at 00:49:21Railroad bridges are a crucial component of the U.S. freight rail system which accounts for moving more than 40 percent of freight in the country, playing a critical role in the U.S. economy. The aging infrastructure coupled with the increasing train traffic poses a safety hazard and risks disruption of services. While identifying damages and performing holistic assessments of railroad bridges remain challenging tasks. This research proposes a physics-informed neural network (PINN) based approach for damage identification and model updating of truss railroad bridges. The proposed framework adopts an unsupervised learning method, leveraging train wheel loads and measured responses at bridge nodes as inputs. The PINN model explicitly incorporates the governing differential equations of system dynamics using a recurrent neural network (RNN) based architecture with a custom Runge-Kutta 4th order (RK-4) integrator cell. This approach enables the identification of damage ratios and localization of damaged members in the bridge. To validate the performance of the proposed approach, a case study is conducted on the Calumet bridge in Chicago, utilizing a simplified 2D model with simulated damage scenarios. The results demonstrate the model’s ability to accurately identify and quantify damage under various conditions while maintaining low false-positive rates. Furthermore, the proposed updating pipeline is designed to seamlessly incorporate prior knowledge gathered from site inspections and drone surveys, enabling a context-aware updating and assessment of bridge’s condition
A PROSPECTIVE OBSERVATIONAL STUDY OF BOTH MALE AND FEMALE PATIENTS WITH VARIOUS TYPES OF CANCERS
No full textShaik Althaf Basha,2BandlaVimal,3Ragi Shravyaand4Dr. Ravindra Bab
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
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
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
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