177,798 research outputs found
Parachilota ruficeps Pickford 1937
No full textParachilota ruficeps Pickford, 1937 Parachilota ruficeps Pickford, 1937: 389. Parachilota ruficeps: Reynolds & Cook 1976: 166. Type locality. WC, Wellington area: Witte River Valley, at Bain's Kloof Pass. Remarks. Pickford (1937: 389) under the heading “ Parachilota ruficeps ” gives a key to subspecies based on distinctions observed in the ornamentation of penial setae. The subspecies P. ruficeps ruficeps and P. r u fi ce p s progrediens are then described in detail, the close similarity of the subspecies is discussed, and suggestions for additional studies are made. In this checklist the subspecies are accepted, although revision of this species is suggested.Published as part of Plisko, Jadwiga Danuta, 2012, An annotated checklist of the South African Acanthodrilidae (Oligochaeta: Acanthodrilidae: Acanthodrilinae, Benhamiinae), pp. 4-58 in Zootaxa 3458 on pages 37-38, DOI: 10.5281/zenodo.28222
Recommended from our members
NTU research in the context of the Responsible Car Wash Scheme
No full textA comparative evaluation of anomaloscopes: Pickford-Nicholson & Nagel
Get PDFIncluded among color vision testing instruments are the Nagel anomaloscope and the Pickford-Nicholson anomaloscope. The Nagel is a spectral instrument whereas the Pickford-Nicholson uses filters. This paper examines how closely the two instruments actually correspond. It is concluded that both instruments do quantitatively yield similar results on both normals and color deficients. The standard deviations of both the means and ranges on the two instruments are equal, at the .02 level of significance
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
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
Get PDFBoth 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
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
Reseeding eastern Oregon summer ranges
No full textby G.D. Pickford, E.R. Jackman.Cover title."January 1944."This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Mode of access: Internet from the Oregon Government Publications Collection.Text in English
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
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
Giant hyracoid from basal Middle Miocene deposits at Gebel Zelten, Libya
Get PDFPrevious records of the presence of the hyracoid Prohyrax sp. at Gebel Zelten are unsubstantiated and the original material seems to have been lost. A distal metapodial of a large hyracoid collected by R. Savage at locality W, Gebel Zelten, is similar in morphology and dimensions to a fossil from Nova, South Africa provisionally attributed to Parapliohyrax. Large hyracoids were thus present in Libya during the early part of the Middle Miocene.Los registros previos de la presencia del hyracoideo Prohyrax sp. en Gebel Zelten son insuficientes y el material original parece haberse perdido. Un fragmento distal de metápodo de un gran hyracoideo recolectado por R. Savage en la localidad W, Gebel Zelten es similar en morfología y dimensiones al fósil de Nova, Sudáfrica provisionalmente atribuidos a Parapliohyrax. Los grandes hyracoideos estuvieron presentes en Libia durante la primera parte del Mioceno Medio
- …
