1,720,955 research outputs found
A Flexible Framework for Robotic Post-Processing of 3D Printed Components
No full textThree-dimensional (3D) printing has revolutionized the production of mechanical components by enabling the creation of objects of complex geometry, but at the same time it has introduced new issues related to post-processing operations. Similarly, robotics has seen an evolution with the emergence of collaborative robots, which can support the operator in human-centric applications. This work aims to bring these two technologies together by presenting a flexible framework for processing raw products obtained through 3D printing technology with the support of collaborative robotics. This framework lays the foundation for the subsequent development of a human-robot cooperation protocol with the aim of simplifying post-processing and particularly finishing operations of metal-printed 3D objects. In this paper, an initial integrated solution is proposed that can address the post-processing needs of objects from 3D printing, providing guidance on the software and hardware tools to be used and the process to be followed to achieve a quality product in compliance with the relevant standards. Verifications in a simulation environment and through algorithms based on the kinematics and statics of a Fanuc collaborative robot implemented in a numerical environment allow verification of the feasibility of several operations. The result is a comprehensive framework that starts from the feasibility study and reaches the completion of the 3D printed component through finishing and post-processing operations
From Single to Dual-Arm Collaborative Robotic Assembly: A Case Study at I-Labs
No full textThis article examines the transition from singlearm to dual-arm collaborative robots in industrial automation, with a particular focus on assembly tasks. By integrating dualarm collaborative robots, such as ABB’s YuMi, this study aims to highlight the enhanced capabilities and efficiencies achieved in robotic assembly. Dual-arm configurations facilitate complex tasks such as sorting and packaging that require coordinated bilateral movements that closely mimic human dexterity. This technology shift not only improves cycle times but also increases precision and safety in collaborative workspaces. Through detailed experimental setups and analysis, the paper underscores the significant advantages of dual-arm robots over traditional single-arm systems, including better space utilization, reduced costs, and improved energy efficiency. These findings suggest that dual-arm collaborative robots hold great promise for advancing the efficiency and sustainability of manufacturing processes in the era of Industry 4.0
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
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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