1,720,954 research outputs found
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
Design of a Gecko Adhesive Climbing Robot
Full text linkEngineering: 1st Place (The Ohio State University Denman Undergraduate Research Forum)I present, ACROBOT, a gecko-adhesive enabled robot that can climb surfaces in any gravitational orientation or operate in full zero gravity. The robot is being developed as a prototype for inspection applications aboard the International Space Station (ISS) where current voids in inspection coverage both inside and outside the station pose risks to the vehicle. A specific area of interest for inspection is a narrow gap, approximately 1.5 inches wide, behind internal equipment racks. The prototype robot uses oppositional pairs of gecko adhesive pads that turn adhesion ON and OFF using an applied shear load. The robot is currently tele-operated and utilizes an inchworm style gait. The robot can turn in a tight circle, fits within a 1.5 inch gap, and can transition between orthogonal surfaces. Gecko adhesives leave no residue, are highly reusable, and create strong adhesion in vacuum and across a wide temperature range. The robot design and initial experimental results are presented including climbing vertical walls in Earth's gravity.NASA Jet Propulsion Laboratory (JPL)NASA JPL Extreme Environment Robotics Group (PI: Dr. Aaron Parness)Academic Major: Mechanical Engineerin
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
Control Moment Gyroscope Stabilization and Maneuverability of Inherently Unstable Vehicles and Mobile Robots
Full text linkThe control problem of stabilizing an inherently unstable body, such as the inverted pendulum, is a classic control theory problem. Traditionally, the solution to this problem has been approached through methods of dynamic stabilization where the inverted pendulum is placed on a wheeled cart that can travel with one translational degree of freedom. This cart essentially accelerates the pivot of the inverted pendulum to accelerate the pendulum to induce a rotation that counteracts the imbalance in the system. A different approach to stabilizing a static or stationary inverted pendulum makes use of the intriguing phenomena known as gyroscopic precession. Precession and the physics of gyros are governed by conservation of angular momentum. By utilizing this technology in a novel way, groundbreaking progress can be made in the field of autonomous stability of inherently unstable mobile robots and vehicles (e.g. two wheeled vehicles). Gyroscopic effects can be found today in simple devices such as a spinning top or a bicycle’s wheel in motion. Gyros are also found in very complex mechanisms such as those used for satellite attitude and large ship anti-roll systems. Recent gyro studies have shown tremendous promise for providing unparalleled capabilities in stabilization and maneuverability for both on and off-road vehicle applications.Air Force Research LabSpecial Ops Transport ChallengeThe Ohio State University's Center for Automotive ResearchThe Ohio State University's Control and Intelligent Transportation LaboratoryNo embargoAcademic Major: Mechanical Engineerin
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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