1,720,980 research outputs found
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
ECORS: An Ensembled Clustering Approach to Eradicate The Local And Global Outlier In Collaborative Filtering Recommender System
Get PDFRecommender systems are designed to suggest items based on user preferences, helping users navigate the vast amount of information available on the internet. Given the overwhelming content, outlier detection has emerged as a key research area in recommender systems. It involves identifying unusual or suspicious patterns in user behavior. However, existing studies in this field face several challenges, including the limited universality of algorithms, difficulties in selecting users, and a lack of optimization. In this paper, we propose an approach that addresses these challenges by employing various clustering algorithms. Specifically, we utilize a user-user matrix-based clustering technique to detect outliers. By constructing a user-user matrix, we can identify suspicious users in the system. Both local and global outliers are detected to ensure comprehensive analysis. Our experimental results demonstrate that this approach significantly improves the accuracy of outlier detection in recommender systems.6 pages, 5 figure
Identification of novel E2 binding sites within the HPV genome and their function in the regulation of viral gene expression
No full textThe human papillomavirus (HPV) E2 protein regulates the virus life cycle by modulating viral transcription and replication. To execute these functions, E2 binds to consensus sequences within the long control region (LCR). The possibility of novel E2 binding sites outside the LCR is the primary focus of this study. Moreover, the cellular protein CCCTC binding factor (CTCF), is known to regulate viral gene expression, therefore viral genome was screened for the presence of CTCF binding sites to see if they overlap the E2 binding sites. A comparison of CTCF expression within patient tonsil sections comprising normal (non-cancerous), HPV positive and HPV negative cancers may provide valuable information on the viral life cycle as well as disease progression. Chromatin Immunoprecipitation assays using primary human tonsil keratinocytes containing episomal HPV16 genomes revealed novel E2 binding sites within the viral genome. Peak binding at base pairs 4400, 4500, 5600 and 6000 was detected, however consensus E2 binding sites do not exist in this region. CTCF was observed to bind to the same regions as HPV16 E2. Further investigation revealed a physical association between E2 and CTCF suggesting that CTCF could recruit E2 to the late region of the HPV genome. In patient tumour samples high levels of CTCF expression were observed throughout the epithelium; in contrast, the pattern of CTCF expression in the normal tonsil epithelium showed high expression in the lower layers that was dramatically reduced in the differentiated layers. Interestingly increased CTCF expression was observed in all areas of HPV positive tonsil sections in comparison to HPV negative sections. This difference in CTCF expression may be associated with HPV infection and important for the viral life cycle
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
Exploring the Use of Data from Newer Technologies in Road Design
Get PDFUse of Light Detection and Ranging (Lidar) is widespread all over the world. Currently field and photogrammetric surveying are the predominant methods to acquire terrain information; however, lidar data is being increasingly used for this purpose. This research examines the usefulness of aerial and mobile lidar data for highway geometric design. Data from Unmanned Aerial Vehicles (UAV) will also be added to this analysis. This research will answer the following questions: 1) To what extent can lidar/ UAV replace traditional land surveying in road design? 2) Up until what stage of road design are data from such newer technologies acceptable
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