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Speaking Stata: On numbers and strings AgEcon
Cox, Nicholas J..
The great divide among data types in Stata is between numeric and string variables. Most of the time, which kind you want to use for particular variables is clear and unproblematic, but surprisingly often, users face difficulties in making the right decision or need to convert variables from one kind to another. The main problems that may arise and their possible solutions are surveyed with reference both to official Stata and to user-written programs.
Tipo: Journal Article Palavras-chave: Binary variables; Categorical variables; Data Editor; Dates; Decode; Destring; Encode; Identifiers; Missing values; Numeric variables; Spreadsheets; String functions; String variables; Tostring; Value labels; Research Methods/ Statistical Methods.
Ano: 2002 URL: http://purl.umn.edu/116018
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Systematic notes on Asian birds. 46. ‘A Catalogue of the Birds in the Museum of the Hon. East-India Company’ by Horsfield & Moore Naturalis
Dickinson, E.C..
Ornithological literature has been extremely inconsistent in assigning authorship for the new names proposed in ‘A Catalogue of the Birds in The Museum of the Hon. East-India Company’ by Horsfield & Moore, or by Moore in parallel to it. The corrected dates of separate publications by Moore and the ICZN Code allow all assignments to be resolved. Hodgson should never be cited for a new name in this work. All but six taxa are attributable to Moore alone, five to Horsfield & Moore and one taxon, Acanthis flavirostris brevirostris although described by Moore, was described by Bonaparte a few months earlier. The contents are set out to show which families were covered by this unfinished work. Evidence is also presented to show that volume 2 appeared as a...
Tipo: Article / Letter to the editor Palavras-chave: Horsfield; Moore; Hodgson; Types; Authorship; Priority; Dates; 42.83.
Ano: 2004 URL: http://www.repository.naturalis.nl/record/215558
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Systematic notes on Asian birds. 47. Blyth’s ’Catalogue of the Birds in the Museum Asiatic Society’ and his 1849 Supplemental Note, with historical comments Naturalis
Dickinson, E.C..
Blyth’s Catalogue is sometimes cited from 1849 and sometimes from 1852. Both dates can be found in Peters’s Check-list, each, in different volumes, appearing to be accepted. Consequently and inconsistently both are found in other works. The cover is dated 1849. The evidence, however, shows that while much was printed in 1849 publication was not before September 1852. Meanwhile Blyth’s ’Supplemental Note’ appeared in 1849. Most of the new taxa described in that were described then to ensure that Blyth’s names, already in his proof sheets for his Catalogue, obtained priority. In Peters’s Check-list most of these names have been cited correctly, i.e. from his Supplemental Note. However, a few exceptions need attention and their dates need to be corrected in...
Tipo: Article / Letter to the editor Palavras-chave: Blyth; Hodgson; Catalogue; Corrections; Dates; Citations; Dumetia; Dinopium benghalense dilutum; Lectotype; Cisticola exilis tytleri; 42.83.
Ano: 2004 URL: http://www.repository.naturalis.nl/record/215559
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