1,721,092 research outputs found
Pickering E.-C. — Etude photographique des spectres stellaires
No full textC. O. Pickering E.-C. — Etude photographique des spectres stellaires. In: Bulletin astronomique, tome 6, 1889. pp. 361-366
Pickering (E.-C .). — Observations d’étoiles variables en 1885
No full textPickering (E.-C .). — Observations d’étoiles variables en 1885. In: Bulletin astronomique, tome 3, 1886. pp. 599-600
Pickering (E.-C.). - Étude photographique des spectres des étoiles
No full textPickering (E.-C.). - Étude photographique des spectres des étoiles. In: Bulletin astronomique, tome 3, 1886. pp. 196-197
Pickering (E.-C.). — Rapport annuel du Directeur du Collège Harvard.
No full textC. O. Pickering (E.-C.). — Rapport annuel du Directeur du Collège Harvard.. In: Bulletin astronomique, tome 20, 1903. pp. 118-119
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Pickering (E .-C .). — Trente-neuvième Rapport annuel du directeur de l’observatoire astronomique d’Harvard College
No full textPickering (E .-C .). — Trente-neuvième Rapport annuel du directeur de l’observatoire astronomique d’Harvard College. In: Bulletin astronomique, tome 2, 1885. pp. 291-293
Pickering (E.-C.). — Rapport annuel du directeur de l’observatoire astronomique du collège Harvard
No full textCallandreau Octave. Pickering (E.-C.). — Rapport annuel du directeur de l’observatoire astronomique du collège Harvard. In: Bulletin astronomique, tome 19, 1902. pp. 281-283
Pickering E.-C. --Cinquantième Rapport annuel du Directeur de l’observatoire d’Harvard College.
No full textPickering E.-C. --Cinquantième Rapport annuel du Directeur de l’observatoire d’Harvard College.. In: Bulletin astronomique, tome 14, 1897. pp. 194-196
Pickering E.-C. — Quarante-neuvième Rapport annuel du directeur de l’observatoire d’Harvard College
No full textC. O. Pickering E.-C. — Quarante-neuvième Rapport annuel du directeur de l’observatoire d’Harvard College. In: Bulletin astronomique, tome 12, 1895. pp. 312-315
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