117,407 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
Impact of dumping operations at a canyon head on turbidity current geohazard: insights from a project development
No full textIn the framework of a liquified natural gas (LNG) project developmenti, 16 million m3 of sediment will be dumped at the head of a submarine canyon. We investigate the ability of spring tides an monsoon storms to resuspend the dumped sediment and trigger turbidity currents (TCs) along the canyon. An integrated modelling is developed and validated against in-situ measurements to describe the dispersion of the dumped sediment, its subsequent erosion due to macro-tidal and storm-induced currents, the triggering and down-canyon evolution of TCs. Our results show that TCs can ben triggered by both energetic spring tides and extreme storms after the dumping, indicating a pontential yearly frequency of these flows. However, the first TCs can erode most of the fine-grained sediments, cleaning the canyon of the fuel for successive events. If confirmed by surveys of tidal erosion, these findings imply a limited risk of damage for the planned subsea infrastructures
Square Dancing with the Stars to Enhance Dynamic Hirschman Linkages?
No full textIn this Presidential Address, the author takes the reader on a reconnaissance of his life and time as a regional scientist. He points out scenery he found scintillating along the way, hoping that some may pick up the banner and chew on a few of the ideas for a while. He suggests a revisit to Albert O. Hirschman’s notion of key sectors and more empirical analysis related to Marcus Berliant’s and Masahisa Fujita’s notion of knowledge creation and transfer.Presidential Address, San Antonio, Texas, March 29, 2014 (53rd Meetings of the Southern Regional Science Association
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
Letter from unknown writer to Jesse L. Boyce
No full textLetter to Jesse L. Boyce from unknown author (possibly Jack) about the investigation into the powder magazine located in the Grand Canyon. Some personal news is included in the letter such as the writer's marriage to the daughter of C.A. Taylor, former Supervisor of Cochise County
Probabilistic estimation of turbidity current risk for offshore developments under changing climate conditions
No full textRecent advances in direct monitoring of submarine canyons activity suggest that metocean events can prime or ultimately trigger turbidity currents at sub-annual to centennial frequencies, challenging the paradigm that such highly destructive flows typically result from infrequent submarine landslides. Here we present a methodology aimed to link information on nearshore circulation and sediment resuspension events such as floods, tides and storms to the downslope evolution of turbidity flows, applied to cyclone-triggered turbidity currents affecting a deep-sea gas development offshore northern Mozambique. We evaluate seabed current velocities at the canyon heads derived from a 10,000 year long synthetic cyclone database consistent with expected future climate conditions. We couple the results for each event to a dedicated 1D turbidity current numerical model accounting for multiple grain-sizes, water entrainment and detrainment, overspill and spatial variations of the channel width and seabed gradient. The 1000’s of individual modelled events allow a statistically consistent estimation of the return period of turbidity currents at different control points along the canyons, and provide an estimation of flow structure, density and velocity necessary to evaluate the risk for offshore developments. Results are validated by the analysis of core samples, seabed morphology and dedicated 3D modelling of critical events
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
Sarah L. Blum Author Visit - Warrior Nurse: PTSD and Healing
No full textHear Sarah L. Blum, author of Women Under Fire: Abuse in the Military, discuss her newest book, Warrior Nurse: PTSD and Healing followed by a Q&A and book signing.
Sarah L. Blum is a decorated Vietnam veteran who served as an operating room nurse during the intense fighting of 1967. In recognition of her service, she was awarded the Army Commendation Medal.
Sponsored by CWU Veterans Center and CWU Libraries.https://digitalcommons.cwu.edu/libraryevents/1252/thumbnail.jp
Lillian L. Lambert, Author, Speaker, and Entrepreneur
No full textLillian L. Lambert, Author, Speaker, and Entrepreneu
Letter to Alfred L. Shoemaker, February 10, 1948
No full textA handwritten letter from an unknown author addressed to Alfred L. Shoemaker, dated February 10, 1948. Within, the author discusses the Pennsylvania Dutch word for Ash Wednesday, along with traditions associated with this day.https://digitalcommons.ursinus.edu/shoemaker_documents/1118/thumbnail.jp
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