1,721,016 research outputs found
Visualization technology-based construction safety management: A review
No full textConstruction safety management has been a popular issue in research and practice in recent years due to the high accident and death rates in the construction industry. The complexity and variability of construction sites makes safety management more difficult to implement than in other industries. As a promising technology, visualization has been extensively explored to aid construction safety management. However, a comprehensive critical review of the visualization technology in construction safety management is absent in the literature. \ud
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This paper provides a comprehensive review to investigate research and development, application methods, achievements and barriers to the use of visualization technology in safety management, and suggests possible future research directions to extend its application. To achieve this, 78 relevant papers from 2000 to 2015 are reviewed. It is found that visualization technology can improve safety management by aiding safety training, job hazard area (JHA) identification and on-site safety monitoring and warnings, but there are barriers or limitations involved. Existing location technologies, for instance, can perform well only in relatively small areas due to their generally poor penetrating performance. Finally, possible future research directions are proposed to benefit the extensive application of visualization technology for construction safety management in both theory and practice
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
Optimizing Task Scheduling for Efficient and Ergonomic Human-Robot Collaboration in Construction Tasks
No full textHuman-robot collaboration (HRC) offers transformative potential for construction to mitigate labor shortages and enhance productivity. Effective task scheduling between human workers and robots is essential for maximizing productivity while reducing workloads of human workers. Extensive research focusing on either task sequencing or work-rest scheduling, which often neglects the interdependence between these two components, leading to suboptimal performance of overall team. Additionally, the existing literature on task scheduling in HRC scenarios within construction is limited, particularly regarding the integration of the dynamic behavior of human and superior physical capabilities of robots. Research gaps remain in coupling task sequencing and work-rest scheduling, as well as in considering the distinct capabilities of human and robot agents. This study proposes an approach that integrates work-rest scheduling with task sequencing by incorporating rest periods as a special task within the optimization process. The proposed method employs a multi-objective genetic algorithm (GA) to maximize work output, robot utilization, and minimize human fatigue, while considering dynamic worker productivity. Additionally, the framework is designed to reschedule tasks in response to the dynamic behaviors of human workers. Experimental results validate the effectiveness of the proposed method in enhancing productivity and reducing human fatigue. This improvement exceeds 10% when compared to existing studies that separate work-rest scheduling from task sequencing. The dynamic scheduling capabilities in adapting to human flexible actions are also verified in comparison to predefined scheduling.</p
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
Design of decoupling networks for circulant symmetric antenna arrays
No full text10.1109/LAWP.2008.2010566IEEE Antennas and Wireless Propagation Letters8291-29
New modal feed network for a compact monopole array with isolated ports
No full text10.1109/TAP.2008.2007399IEEE Transactions on Antennas and Propagation56123872-3875IETP
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
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