117,303 research outputs found
World of Elephants 2: Selected papers from the 2nd Congress, Mammoth Site of Hot Springs
No full text[No abstract available
The early Middle Pleistocene mammalian fauna from Pagliare di Sassa (l'Aquila, central Italy): new data
No full textAgenbroad L.D., Symington. R. L. (eds)Mammoth Site Scientific Papers
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
Clovis Projectile Point Occurrences In Northwestern Nebraska
No full textTwo Clovis projectile point finds are reported from the Panhandle of Nebraska (Dawes and Sioux Counties). Both are surface finds and both bear resemblance to finds in Arizona and Oklahoma.
Two recent Clovis projectile point finds from the Panhandle of Nebraska warrent description. The artifacts are in the possession discoverer, Mr. William (Bill) Hudson of Crawford, Nebraska. Both artifacts are surface finds in local areas of bad land topography in Dawes and Sioux Counties. The rarity of Occurrence of this distinctive projectile point in Nebraska, whether surface find or not, makes the discoveries of importance. To my knowledge (Agenbroad, 1971), there are no occurrences of Clovis projectile points, in situ, in stratified sites within the state. At least all published records are a surface finds or recovered from sand screening operations in gravel pits. The significance of Clovis projectile points as time and cultural markers makes record of their occurrence important regardless of the nature of the find.
The two Panhandle points include one complete point and one basal fragment (Fig. 1). The metric data (in mm unless stated otherwise) for the two points are as follows: data for the complete point are given first, that for the basal fragment follow in parentheses: maximum width 29(33), weight in grams 37.6 (-), maximum thickness 9 (5), maximum length 106 (-), distance from base to point of maximum thickness 53 (41), base width 26 (31), depth of basal concavity 5 (6), flute scar 0.30, R. 29 (0.22, R.37), lateral grind L(29) R37, L31, R(39). Both points are of agate.
Comparison of the metric data for these specimens and that for points recovered at classic sites (e.g., Lehncr Ranch, Naco I and II, Murray Springs, Escapule. Arizona; Dent, Colorado; Clovis, New Mexico; and Domebo. Oklahoma) indicate that the Nebraska points readily fall within the range of values for points from classic sites. The greatest affinities of the Nebraska points are with those of the Arizona and Oklahoma sites
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
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
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