1,720,974 research outputs found
Autonomous Navigation System with Obstacle Avoidance using 2.5D Map Generated by Point Cloud
No full textThe development of a robust obstacle avoidance system for the autonomous mobile robot has become important as their applications become widespread. Even though plenty of autonomous systems have been developed, safe driving in complex environments, such as crowded places or a place with many obstacles in the path, is still a challenging task. In this paper, we propose an autonomous navigation system of a mobile robot in a dynamic environment. We build a 2.5D map, that integrates a 2D grid map with dynamic objects 3D geometry information. From the 3D LiDAR point cloud, dynamic points are detected by tracking the occupancy changes over time. Then remained static points are used for generating a 2D grid map by SLAM algorithm. A computation cost is reduced efficiently by reconstructing only the necessary parts for the mobile robot driving into the high resolution of raw point cloud data. In addition, it can be easily utilized in the embedded board since the system does not need any complex calculations. Our experiments demonstrate that the system is possible to simultaneously perform multiple roles of map building, localization, and dynamic obstacle avoidance using real-time incoming 3D point cloud data. © 2021 ICROS.1
Flow Model Can Give You Optimal and Diverse Design Guidance for TSV Array Placement in HBM
No full text2024 Neural Information Processing and Systems (NeurIPS) Machine Learning for Systems Workshop
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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
PSIJ based Integrated Power Integrity Design for HBM using Reinforcement Learning: Beyond the Target Impedance
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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
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