1,721,226 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
No full text“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
No full textWe 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
Vehicle Dynamics Compendium
No full textThis compendium is intially written for the course “MMF062 Vehicle Dynamics” at Chalmers University of Technology. However, the compendium covers more than included in that course.The overall objective of the compendium is to educate automotive engineers for development of vehicles. The compendium focuses on road vehicles, primarily passenger cars and commercial vehicles. Smaller road vehicles, such as bicycles and single-person cars, are only very briefly addressed. It should be mentioned that there exist a lot of ground-vehicle types not covered at all, such as: off-road/construction vehicles, tracked vehicles, horse wagons, hovercrafts or railway vehicles.Functions are needed for requirement setting, design and verification. The overall order within the compendium is that models/methods/tools needed to understand each function are placed before the functions. Chapters 3-5 describes (complete vehicle) “functions”, organised after vehicle motion directions:\ub7\ua0\ua0\ua0\ua0\ua0\ua0\ua0\ua0 Chapter 3:\ua0Longitudinal\ua0dynamics\ub7\ua0\ua0\ua0\ua0\ua0\ua0\ua0\ua0 Chapter 4:\ua0Lateral\ua0dynamics\ub7\ua0\ua0\ua0\ua0\ua0\ua0\ua0\ua0 Chapter 5:\ua0Vertical\ua0dynamicsChapter 1 introduces automotive industry and defines/repeats required pre-knowledge from different traditional academic disciplines, e.g. modelling of dynamic systems.Chapter 2 describes what interacts with the vehicles from outside, like wheels and tyres, aerodynamics and driver. Chapter 2 also describes the other subsystems relevant for vehicle dynamics:\ub7\ua0\ua0\ua0\ua0\ua0\ua0\ua0\ua0 Wheels and Tyres\ua0\ub7\ua0\ua0\ua0\ua0\ua0\ua0\ua0\ua0 Suspension System\ua0\ua0\ub7\ua0\ua0\ua0\ua0\ua0\ua0\ua0\ua0 Propulsion System\ua0\ub7\ua0\ua0\ua0\ua0\ua0\ua0\ua0\ua0 Brake System\ua0\ub7\ua0\ua0\ua0\ua0\ua0\ua0\ua0\ua0 Steering System\ua0\ub7\ua0\ua0\ua0\ua0\ua0\ua0\ua0\ua0 Environment Sensing Syste
Vehicle Dynamics Compendium for Course MMF062 [Elektronisk resurs]
No full textThis compendium is intended for first-time-studies studies of vehicle dynamics. At Chalmers University of Technology this is in the course “MMF062 Vehicle Dynamics”. The compendium covers more than actually included in the course; both in terms of subsystem designs, which not necessarily has to be fully understood in order to learn the vehicle level; and in terms of some teasers for more advanced studies of vehicle dynamics. Therefore, the compendium can also be useful in general vehicle engineering courses, e.g. in the Chalmers course “TME121 Engineering of Automotive Systems”; and as an introduction to more advance courses, which at Chalmers is the course “TME102 Vehicle Dynamics Advanced”.The overall objective of the compendium is to contribute to education of automotive engineers with good skills to design for, and verify, requirements on complete vehicle level functions, regarding vehicle dynamics or motion.The compendium focus on road vehicles, both passenger cars and commercial vehicles. Smaller road vehicles, such as bicycles and single-person cars, are only very briefly mentioned. It should be mentioned that a lot of ground-vehicle types are not covered at all, such as: off-road/construction vehicles, tracked vehicles, horse wagons, hovercrafts or railway vehicles
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