1,721,106 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Green Solutions for Wet Weather Management
Get PDFManaging storm runoff and sewer overflow remains one of the largest challenges of sustainable environmental design for cities. Combined Sewer Overflows (CSO) can be mitigated by means of "green" infrastructure. A CSO results when a major rain event causes a storm surge within the cities network of combined sewers. A combined sewer houses the flow of both sanitary and storm water. These CSOs are harmful to the environment as they release waste water into natural ecosystems when the system is overflowing with storm water. "Green" infrastructure solutions for CSOs have been developed and implemented into various cities around the country, yet little has been done to quantify and objectively forecast their potential effects.
Green infrastructure can be defined as any form of storm water capture and retention prior to its introduction into a sewer network. Examples of green infrastructure include but are not limited to: green roofs, permeable pavements, cisterns, rain gardens and vegetated swales. The implementation of green infrastructure relies heavily on the characteristics of the land and the built environment. Using the city of Columbus as a test case, we categorized a scheme of green infrastructure scenarios based on varying attributes of the city landscape. We segmented the city into discrete catchments and categorized them based of surface type, size, drainage and topographic slope. For each catchment type we compare simulations with and without different "green" solutions. We applied the USGS Technical Release 55 method (TR-55) to determine the peak unit discharge of runoff before and after the implementation of green infrastructure in each sub-catchment type. Our simulation results show that the implementation of green infrastructure will serve to limit peak discharge and total volume of runoff and thus prevent much storm water from overflowing the sewer network.No embarg
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
Simulating Aerial Migrations through Use of Empirical Movement Models
Get PDFAerial migrations are historically difficult to observe and quantify, especially the environment in which these migration take place. However, with increasingly accurate tracking methods and international datasets containing remote sensing and weather renalyses, it is becoming easier to observe this environment and find the conditions that mostly affect the migrants. Track annotation is the method of combining the tracking data with the environmental data, and can be used to create models of the animals’ movement. I performed a track annotation of Swainson’s thrush and created an empirical model based on the environmental conditions that mostly affect the flight. A Swainson’s thrush (Catharus ustulatus) is a small songbird that migrates from northeastern North America to Central and South America in the winter. This annual migration involves a 1000-kilometer trip across the Gulf of Mexico. Little is known about the details surrounding this annual flight, including the variables that affect the flight itself. In a National Science Foundation (NSF) funded experiment, the thrushes are tracked by a radio transmitter which allows us to record arrival and departure timestamps of the transGulf flight. The Environmental-Data Automated Track Annotation (Env-DATA) system—a data exploration system developed through Movebank (www.movebank.org) and The Ohio State University allows us to link the movement track with data from global and regional weather reanalysis models and remote sensing. I annotated the movement tracks with several different environmental variables and followed a hierarchal process to build a series of empirical movement models. I concluded that the combination of boundary layer height and wind speed most strongly affect the flight.National Science Foundation (IOS Award #1147096)NASA (grant #NNX11AP61G)National Geographic Society Committee on Research and Exploration (Award # 8971-11)Eastern Illinois University (Research and Creative Activity Awards to J.L.D. and L.S.)University of Illinois Urbana-ChampaignNo embargoAcademic Major: Environmental 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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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