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Nepenthes alzapan (Nepenthaceae), a new species from Luzon, Philippines
No full textCheek, Martin, Jebb, Matthew (2013): Nepenthes alzapan (Nepenthaceae), a new species from Luzon, Philippines. Phytotaxa 100 (1): 57-60, DOI: 10.11646/phytotaxa.100.1.
The Nepenthes micramphora (Nepenthaceae) group, with two new species from Mindanao, Philippines
No full textCheek, Martin, Jebb, Matthew (2013): The Nepenthes micramphora (Nepenthaceae) group, with two new species from Mindanao, Philippines. Phytotaxa 151 (1): 25-34, DOI: 10.11646/phytotaxa.151.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.151.1.
FIGURE 1. Nepenthes abgracilis A in The Nepenthes micramphora (Nepenthaceae) group, with two new species from Mindanao, Philippines
No full textFIGURE 1. Nepenthes abgracilis A habit, stem with upper pitcher; B upper pitcher (from McPherson 2009); C tendril apex (pitcher not developed), indumentum; D outer surface of pitcher, with sessile glands; E nectar glands, lower surface of lid, midline (elongated); F nectar glands of lateral areas; G nectar glands, lid margin; H peristome, inner edge dissected (non-natural state); I peristome view from above; J peristome transverse section (inner surface on right); K lid, lower surface, midline ridge (probably artefact of drying). Scalebars: single = 1 mm; graduated single = 2 mm; double = 1 cm; graduated double = 5 cm (drawn by A. Brown from the type specimen).Published as part of Cheek, Martin & Jebb, Matthew, 2013, The Nepenthes micramphora (Nepenthaceae) group, with two new species from Mindanao, Philippines, pp. 25-34 in Phytotaxa 151 (1) on page 29, DOI: 10.11646/phytotaxa.151.1.2, http://zenodo.org/record/510058
FIGURE 1. Nepenthes abgracilis A in The Nepenthes micramphora (Nepenthaceae) group, with two new species from Mindanao, Philippines
No full textFIGURE 1. Nepenthes abgracilis A habit, stem with upper pitcher; B upper pitcher (from McPherson 2009); C tendril apex (pitcher not developed), indumentum; D outer surface of pitcher, with sessile glands; E nectar glands, lower surface of lid, midline (elongated); F nectar glands of lateral areas; G nectar glands, lid margin; H peristome, inner edge dissected (non-natural state); I peristome view from above; J peristome transverse section (inner surface on right); K lid, lower surface, midline ridge (probably artefact of drying). Scalebars: single = 1 mm; graduated single = 2 mm; double = 1 cm; graduated double = 5 cm (drawn by A. Brown from the type specimen).Published as part of Cheek, Martin & Jebb, Matthew, 2013, The Nepenthes micramphora (Nepenthaceae) group, with two new species from Mindanao, Philippines, pp. 25-34 in Phytotaxa 151 (1) on page 29, DOI: 10.11646/phytotaxa.151.1.2, http://zenodo.org/record/510058
FIGURE 2. Nepenthes cid A in The Nepenthes micramphora (Nepenthaceae) group, with two new species from Mindanao, Philippines
No full textFIGURE 2. Nepenthes cid A habit, showing the whole plant, with woody rootstock; B lower surface of leaf-blade showing simple hairs and sessile globose glands; C stem, showing hairs; D tendril, showing hairs; E detail of D showing individual 'dagger hairs'; F outer surface of pitcher showing minute stellate hairs; G lower surface of pitcher lid; H nectar glands from midline of lid; I nectar glands from near periphery of lid; J peristome, viewed from above; L & K peristome, after dissection, rolled back to expose inner edge with holes (normally concealed); M peristome, transverse section, outer edge to right; N junction of lid and peristome, with spur. Scalebars: single = 1 mm; graduated single = 2 mm; double = 1 cm; graduated double = 5 cm (drawn by A Brown from the type specimen).Published as part of Cheek, Martin & Jebb, Matthew, 2013, The Nepenthes micramphora (Nepenthaceae) group, with two new species from Mindanao, Philippines, pp. 25-34 in Phytotaxa 151 (1) on page 32, DOI: 10.11646/phytotaxa.151.1.2, http://zenodo.org/record/510058
Nepenthes micramphora V. Heinrich, S. McPherson, Gronemeyer & Amoroso (2009: 1315
No full textKey to the species of the <i>N. micramphora</i> group <p> 1. Epiphyte of tall trees; stems, leaves and pitcher hairy; leaves with distinct petiole 2.5–4 cm long...................... <i>N.cid</i></p> <p>- Terrestrial shrub or climber; stems, leaves and pitchers (except under peristome) glabrous; leaves without a distinct petiole (sessile).............................................................................................................................................................. 2</p> <p> 2. Upper pitchers subcylindric, widest at base, about 16 cm long <i>................................................................. N. abgracilis</i></p> <p> - Upper pitchers infundibuliform, narrowest at base, widest in upper half, 4(–6.7) cm long.................. <i>N.micramphora</i></p>Published as part of <i>Cheek, Martin & Jebb, Matthew, 2013, The Nepenthes micramphora (Nepenthaceae) group, with two new species from Mindanao, Philippines, pp. 25-34 in Phytotaxa 151 (1)</i> on page 33, DOI: 10.11646/phytotaxa.151.1.2, <a href="http://zenodo.org/record/5100580">http://zenodo.org/record/5100580</a>
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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
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