177,603 research outputs found
Tucetona isabellae Valentich-Scott & Garfinkle, new species
No full textTucetona isabellae Valentich-Scott & Garfinkle, new species Figures 1 A –G Glycymeris (Glycymeris) cabazoni Bramkamp, 1935, unnumbered pages, plate 2, figures 2, 3; Tucetona (Bellaxinaea) new species, Powell, 1986: 79 –81, plate 2, figures 5, 7. Shell shape. Subovate to subtrigonal, moderately inflated, height and length about equal; beaks narrow, pointed, opisthogyrate. Sculpture and color. About 29 (20–48, n= 15) heavy, broad radial ribs, many bifurcate in larger specimens, overlain by strong, fine, well-spaced, commarginal ribs forming crossbars over ribs and in interspaces; interspaces moderately wide, frequently with intercalary ribs; periostracum inconspicuous; exterior color tan, with few dark brown blotches; interior color white to cream, with brown mottling in some specimens, some specimens mostly brown internally. Hinge. Hinge plate curved, narrow, posterior tooth series about 8 (4–11, n= 10), anterior about 7 (3–11), ligament asymmetrical, much longer anteriorly, moderate in length, moderately narrow, with about 3 (2–6) chevron grooves. Adductor muscle and pallial scars. Moderate in size, moderately impressed, anterior scar subovate, posterior scar ovate-elongate; pallial line narrow, with long, narrow dorsally directed lines extending from it. Inner ventral crenulations. About 24 (14–43) rectangular, flat topped. Distribution. Modern specimens are only known from a small region off the northwest end of Isla Smith, Baja California, Mexico (29.1° N), 120– 170 m. Fossil specimens are present in the late Miocene “Imperial” Formation in Riverside County, southern California (Powell, 1986; 1988). Type locality and type specimens. Mexico, Baja California, off the northwest end of Isla Smith; 29 °05’ 12 ”N, 113 ° 32 ’ 12 ”W; 120– 170 m. All paratypes listed below are from the same lot as the holotype. Holotype. SBMNH 149636, length 14.5 mm, height 15.0 mm. Paratypes. SBMNH 149637, 34 paired valves, 31 separate valves; BMNH 20100629, 2 paired valves, 2 separate valves; CASIZ 184502, 3 paired valves; USNM (1149245), 2 paired valves, 2 separate valves. Etymology. Named in honor of Isabella M. A. Rocha from Santa Barbara, California, a close friend of the junior author. Comparisons. Tucetona isabellae differs from Tucetona bicolor Reeve, 1843 (Figures 1 H–J), which has a subtrigonal shell shape, about 39 radial ribs with moderately shallow, very narrow interspaces, with very fine, very closely spaced commarginal ribs, and a moderately wide, curved hinge plate. Tucetona multicostata G. B. S ow e r b y I, 1833 (Figures 1 K–M) has a subovate shell shape, about 32 non-bifurcate radial ribs with wide, deep interspaces, with moderately spaced commarginal ribs, and a moderately wide, curved hinge plate. Tucetona isabellae differs from Tucetona strigilata G. B. Sowerby I, 1833 (Figures 1 N–P), which has a subtrigonal shell shape, about 24 non-bifurcate radial ribs with moderately wide, moderately shallow interspaces, with very fine, closely spaced commarginal ribs, and a wide hinge plate with curved teeth. The North Atlantic Tucetona pectinata (Gmelin, 1791) has fewer, non-bifurcating radial ribs with narrow interspaces when compared to T. isabellae. The new species has a similar number of radial ribs when compared to the northern Atlantic Tucetona subtilis Nicol, 1956, but the ribs are not bifurcate, and the latter species has fewer teeth on the hinge plate. Remarks. Tucetona isabellae has also been found in the fossil record although never formally described (Bramkamp, 1935; Powell, 1986). Powell (1986) compares this species to two fossil species from Venezuela and Columbia, both of which have significant differences in dentition and ligamental grooves, and thus are not included in the comparisons above. We have done a close examination of the Panamic members of the genus Tucetona and found that it has been difficult to differentiate the species. Many of the specimens in the museum collections we examined were incorrectly identified due to a misunderstanding of important characters within the genus. We found that the most distinct differences between the different Panamic species were, 1) presence or absence of rib bifurcation, 2) width and depth of interspaces, 3) size of the commarginal ribs, and 4) the width of the hinge plate. These characters alone can still sometimes lead to incorrect identifications. Further study, using molecular tools, likely would produce additional characters and might lead to the discovery of additional new species.Published as part of Valentich-Scott, Paul & Garfinkle, Elizabeth A. R., 2011, A new species of Tucetona (Bivalvia: Glycymerididae) from Mexico, pp. 65-68 in Zootaxa 2769 on pages 65-67, DOI: 10.5281/zenodo.27686
A new species of Tucetona (Bivalvia: Glycymerididae) from Mexico
No full textValentich-Scott, Paul, Garfinkle, Elizabeth A. R. (2011): A new species of Tucetona (Bivalvia: Glycymerididae) from Mexico. Zootaxa 2769: 65-68, DOI: 10.5281/zenodo.27686
Eddie Garfinkle, 1977-1978 Football Player
No full textEddie Garfinkle was a member of the football team at Jacksonville State University in 1977-1978.https://digitalcommons.jsu.edu/lib_ac_histimg_1970/8084/thumbnail.jp
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
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
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
Letter from R. R. Zellick, Assistant Trust Officer, Anglo California National Bank of San Francisco, to Joseph R. Goodman, October 2, 1942
No full textLetter from R. R. Zellick, Assistant Trust Officer at The Anglo California National Bank of San Francisco, to Joseph R. Goodman, regarding property owned by Dave Tatsuno. Zellick mentions a dispute between current tenants and Tatsuno, and that Tatsuno has asked Goodman to help locate trustworthy tenants.Personal correspondence, organizational records, government documents, publications, and other papers created or collected by Joseph R. Goodman documenting the forced removal and incarceration of Japanese Americans during World War II, as well as organized resistance to incarceration. Included in the collection are records of the Japanese Young Men's Christian Association and the Japanese American Citizens' League in San Francisco, including papers of the Japanese YMCA's executive secretary Lincoln Kanai; Sakai family papers; Goodman's correspondence to and from Japanese American incarcerees, organizations opposing forced removal and incarceration of Japanese Americans, the War Relocation Authority, and others; publications, photographs, and ephemera from the Topaz Relocation Center, where Goodman taught high school; War Relocation Authority records and publications; and newspaper clippings, pamphlets, and reports about forced removal and incarceration created by various government, religious, and civic organizations, in California and nationwide
Accretion disks around the Gibbons–Maeda–Garfinkle–Horowitz–Strominger charged black holes
No full textAbstract It seems surprising that the emissivity properties of the accretion disk (à la Page and Thorne) surrounding the Gibbons–Maeda–Garfinkle–Horowitz–Strominger (GMGHS) black holes of heterotic string theory have not yet been studied. To fill this gap in the literature, we study the emissivity properties of the thin accretion disks around these black holes both in the Einstein and in the string frame using the Page–Thorne model. For illustration, we choose as a toy model a stellar-sized spherically symmetric black hole and find that, while the emissivity properties do not significantly differ from those of Reissner–Nordström and Schwarzschild black holes, they remarkably differ at GMGHS extreme limits corresponding to naked singularity and wormhole at higher frequencies. These differences provide a novel way to speculatively conclude about different types of objects from the observational point of view
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
Liftings for noncomplete probability spaces
No full textThe current state of knowledge concerning liftings for noncomplete probability spaces is discussed. This is a somewhat expanded version of the author's talk given at the 1991 Summer Conference on General Topology and Applications in Honor of Mary Ellen Rudin and Her Work.PT: S; CR: BURKE MR, IN PRESS P AM MATH S BURKE MR, 1991, ISRAEL J MATH, V73, P33 BURKE MR, 1992, ISRAEL J MATH, V79, P289 CARLSON T, THEOREM LIFTING CHRISTENSEN JPR, 1974, TOPOLOGY BOREL STRUC FREMLIN DH, 1989, HDB BOOLEAN ALGEBRAS, P877 INOESCUTULCEA A, 1966, 5TH P BERK S MATH ST, V2 IONESCUTULCEA A, 1967, CONTRIBUTIONS PROB 1, P63 IONESCUTULCEA A, 1969, TOPICS THEORY LIFTIN JECH TJ, 1978, SET THEORY JOHNSON RA, 1980, P AM MATH SOC, V80, P234 JUST W, IN PRESS T AM MATH S KUPKA J, 1983, INDIANA U MATH J, V32, P717 LOSERT V, 1983, LNM, V1080, P95 MAHARAM D, 1958, P AM MATH SOC, V9, P987 SHELAH S, 1983, ISRAEL J MATH, V45, P90 TALAGRAND M, 1982, P AM MATH SOC, V84, P379 VONNEUMANN J, 1931, CRELLES J MATH, V165, P109; NR: 18; TC: 0; J9: ANN N Y ACAD SCI; PG: 4; GA: BZ86BSource type: Electronic(1
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