1,725,979 research outputs found
L'autodafé de Troyes (24 avril 4288)
Darmesteter Arsène. L'autodafé de Troyes (24 avril 4288). In: Revue des études juives, tome 2, n°4, avril-juin 1881. pp. 199-247
Congressional Record S. 4288 - Depletion Allowance
Congressional Record S. 4288 - Depletion Allowanc
Going Beyond Counting First Authors in Author Co-citation Analysis
The 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
Recommended from our members
Abstract 4288: Predicting DNA methylation in cervical cancer using somatic mutations in a classified mixed model prediction
Abstract In cervical cancer, the promoter CpG islands of several tumor suppressor genes have been found with abnormal DNA methylation (DNAm) levels, which results in transcriptional silencing. Genetic databases from tumor samples are available without the corresponding DNAm profile. To fulfill this gap and contribute to deciphering the link between genetic variants and DNAm, we performed this study to find a good statistical model for predicting DNAm using genetic data. To address this, we downloaded from the TCGA dataset the genes with significant somatic mutations, as reported by the BROAD Institute, and the DNAm beta values, in known CpG sites, from 307 Cervical Squamous Cell Carcinoma and Endocervical Adenocarcinoma (CESC) samples. Clinical data were also downloaded from patients, including race, age, gender, and cancer stage. We tested five mixed models containing both fixed and random effects to include the unmeasured source of variations in DNAm, for which we used the clustering of samples based on DNAm patterns. Models tested were: Classified mixed model prediction (CMMP), Linear regression model (LM), High dimensional shrinkage estimator based on the elastic net (ENET), a combination of CMMP - ENET, and Random Forest prediction (RF). Besides the significantly mutated genes, the clinical variables were also included as covariates to predict DNAm. We used shared random effects to borrow strength across racial groups, which improves predictive accuracy. Models were enhanced by combining other types of cancers to increase data heterogeneity and the number of samples. Lung Adenocarcinoma (LUAD) and Liver Hepatocellular Carcinoma (LIHC) were selected using Gini and Gap statistics for optimal clustering. Model fitting was evaluated using the average mean squared prediction error (MSPE). Results revealed that the CMMP model with CESC LIHC and LUAD data combined showed the best prediction results (lowest MSPE). The plot of the averaged estimated ENET coefficients indicated that the most important-significantly mutated genes to predict DNAm were CTNNB1, DMD, XIRP2, and PIK3CA. SNPs in these genes linked to cervical cancer include rs121913396, rs121913403 (CTNNB1), rs867262025, and rs121913279 (PIK3CA).In summary, we developed a mixed-effects model for accurately predicting DNAm levels in cervical cancer, using genes with significant somatic mutations (SNVs and INDELs). These results also align with growing evidence suggesting that genetic variation plays a role in DNAm. Citation Format: Jairo D. Ramos, J. Sunil Rao. Predicting DNA methylation in cervical cancer using somatic mutations in a classified mixed model prediction. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 4288
Variations on the Author
“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
Linked collectors and determiners for: A matrix-based revision of the genus Hypogena Dejean, 1834 (Coleoptera Tenebrionidae).
Natural history specimen data linked to collectors and determiners held within, "A matrix-based revision of the genus Hypogena Dejean, 1834 (Coleoptera Tenebrionidae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/9ee1348c-ac1e-4288-8d0a-f934b11d87d5">https://bionomia.net/dataset/9ee1348c-ac1e-4288-8d0a-f934b11d87d5</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/9ee1348c-ac1e-4288-8d0a-f934b11d87d5">https://gbif.org/dataset/9ee1348c-ac1e-4288-8d0a-f934b11d87d5</a>. Formatted as a Frictionless Data package
Appropriate Similarity Measures for Author Cocitation Analysis
We 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
[Richmond Cedar Works, Locomotive 3, Erecting Card Drawing No. 4288]
Erecting card drawing for Richmond Cedar Works.This erecting drawing was created for Richmond Cedar Works Locomotive 3, Class 08-18 D 107. Erecting Card 4288. Index Number: 674-19. For more technical details on this drawing, see Baldwin Erecting Drawings by Road Name: http://www.smu.edu/~/media/Site/libraries/degolyer/pdfs/BLW-EDWG-RoadName.pdf and/or Baldwin Erecting Drawings by Class Number: https://www.smu.edu/~/media/Site/libraries/degolyer/pdfs/BLW-EDWG-Class.pdf (Note: Search by Index Number or Erecting Card Number)
- …
