17,208,519 research outputs found
Entrevista com Otávio Aloisio Maldaner
No full textO professor Maldaner nos fala nesta entrevista sobre sua trajetória acadêmica comentando os passos que deu em sua formação para se tornar professor de ciências e química. Reflete sobre o surgimento de sua família no centro/norte do estado do Rio Grande do Sul, da religiosidade da família e comenta ser muito frequente que as famílias se sentissem orgulhosas de ter filhos vocacionados para a religião, tornando-se padres ou freiras. Aos 11 anos de idade foi interno em um seminário, o que durou cerca de dez anos. Após se formar em Licenciatura em Filosofia, iniciou a carreira do magistério em Chapecó-SC, ministrando aulas de Física e Química apoiado em livros didáticos da época. Formou-se também em Licenciatura em Ciências e passou a lecionar no nível universitário, quando frequentou um curso de especialização que o levou a fazer o mestrado no Instituto de Química da Unicamp e anos depois o doutorado na Faculdade de Educação da mesma instituição. Suas principais contribuições acadêmicas estão nos estudos sobre o conhecimento do professor e na proposição e desenvolvimento das Situações de Estudo como unidade organizadora do currículo. Dada sua experiência de trabalho e em princípios teóricos, Maldaner defende a participação ativa do professor na organização curricular e de uma sociedade mais próxima à escola na construção de soluções para a educação
Dichotomius (Selenocopris) malyi Maldaner, Nunes, and Vaz-de-Mello 2015
No full textDichotomius (Selenocopris) malyiMaldaner, Nunes and Vaz-de-Mello, 2015 Non-type material: BRAZIL: Minas Gerais: Campos Altos. Parque Estadual de Campos Altos. 19°43 ʹ 45”S; 46°07 ʹ 32”W. 16.i.2014. L.D.L. Cardoso. [4♂ 2♀ CEMT]. Same locality, but 19° 43 ʹ 14”S; 46°07 ʹ 38”W. 16.i.2014. L.D.L. Cardoso. [2♂ CEMT]. Same county, but Zona de Amortecimento do Parque Estadual de Campos Altos. 19°44 ʹ 49”S; 46°05 ʹ 42”W. 16.iv.2015. TMB Eleutério. [3♂ 1♀ CEMT]. Comments The labels of the type material of D . malyi indicate ‘ São Paulo’ as the collecting locality (with no further data). Here, we provide for the first time an exact, additional location of collection for this species. Dichotomius malyi was recently re-collected in and around the Parque Estadual de Campos Altos, in Campos Altos municipality, Minas Gerais State, Brazil (approximately 950 m elevation) (Figure1). This locality is about 125 km north-east from the border of São Paulo State and then on the other side of Serra da Canastra; thus, D . malyi is not likely to occur in São Paulo State. The original description applies well to all examined specimens, yet larger individuals bear more pronounced conical cephalic process in males and cephalic knob in females. Size variation: 11 mm to 13 mm.Published as part of Maldaner, Maria Eduarda & Vaz-de-Mello, Fernando Z., 2022, New data and species for the Dichotomius speciosus (Waterhouse, 1891) species group (Coleoptera: Scarabaeidae: Scarabaeinae), pp. 2999-3006 in Journal of Natural History 55 (47 - 48) on pages 3004-3005, DOI: 10.1080/00222933.2022.2025941, http://zenodo.org/record/635183
Metacanthops amazonica Agudelo & Maldaner & Rafael 2019, n. comb.
No full textMetacanthops amazonica (Beier, 1930) n. comb. Acanthops amazonica Beier, 1930: 29 (Fig.1); 1934: 3; Travassos-Filho 1945: 179; Terra 1995: 29; Ehrmann 2002: 48; Otte & Spearman 2005: 7. Metilia amazonica; Roy 2002: 174; Lombardo & Ippolito 2004: 1; Agudelo et al. 2007: 115; Ehrmann & Koçak 2009: 3. Agudelo 2018 (CTFB). Diagnosis. Body coloration dark brown. Pseudophallus long in relation to titillator, broader at the base, tapering towards the apex, the latter lanceolate, sclerified and sharp, left margins with some denticles, opposite margin with elongated, basal spines, which decrease in length and sclerification level towards the apex. Hypophallus longer than broad, distal apophysis elongated and strongly curved or sinuous.Published as part of Agudelo, Antonio A., Maldaner, Caroline & Rafael, José A., 2019, Dry leaf or twig mantis? A new genus and species of Acanthopidae with sexually dimorphic cryptic strategies (Insecta: Mantodea), pp. 331-344 in Zootaxa 4560 (2) on page 334, DOI: 10.11646/zootaxa.4560.2.6, http://zenodo.org/record/262770
Metacanthops Agudelo & Maldaner 2019, gen. n.
No full textMetacanthops Agudelo & Maldaner gen. n. Type species: Acanthops amazonica Beier, 1930 Diagnosis: Male habitus similar to that of Metilia, but entirely brown. Body length 23–35 mm. Males resembling a dry leaf, whereas females resemble a twig. Eyes slightly conical, with a small, apical wart. Vertex with arched apex, higher than eyes, and tuberculated in females. Head and pronotum smooth in males, with multiple tubercles in females. Prothoracic femora with 6 posteroventral spines, rarely with 5 or 7 on one femur. Prothoracic tibiae with 20–21 posteroventral spines with darkened apex, and 15–17 anteroventral spines. Mesothoracic wings shorter than metathoracic ones at resting, both are longer than abdomen in males but shorter in females, costal vein sinuous and excavated in the male. Lateral abdominal expansions of males of moderate size, in general, both sexes lack prominent lobes. Cerci cylindrical, distal cercomere conical, with a concave area dorsally. Etymology: Metacanthops is a name with an intentionally ambiguous origin, resulting from the fusion of the Greek prefix meta = µετά, meaning beyond, and Acanthops, genus to which the species was initially assigned. The generic epithet also results from the fusion of “ Met ” (in reference to Metilia), and Acanthops. Remarks. Metacanthops differs from Metilia in having uniformly brown forewings, whereas the same in Metilia vary from dark green to yellow. However, it is in the head where conspicuous differences between Metacanthops and Metilia, and between them and Acanthops can be observed (Figs. 13–22). For instance, the compound eyes of Metacanthops are only slightly conical and bear a small apical wart, whereas the same in Metilia and Acanthops are strongly conical with a more developed apical wart; the vertex of Metacanthops rises above the compound eyes, in the males it has distinct undulations in its central area and conspicuous juxtaocular process in females (Figs. 14–17), whereas in Metilia and Acanthops these features are missing. Metacanthops has a robust and tuberculated pronotum, but in Metilia the same is relatively narrower and smooth (Figs. 18, 19). The number of forefemoral posteroventral spines apparently constitutes a good diagnostic character in this case, as we consistently found 6 spines in all studied specimens of Metacanthops (however, in few rare cases some specimens have 5 or 7 in only one of their prothoracic legs), whereas we consistently found 7 forefemoral posteroventral spines across all specimens of Metilia (unpublished data). In addition, the margins of tergites V and VI are slightly prominent and rectangular in Metacanthops, whereas in Metilia they are dilated, semicircular or subtriangular. The reliability of certain characters to separate acanthopid genera, such as vertex features, wing shape, abdominal appendages and, particularly, the number of forefemoral spines, have been a matter of controversy (Chopard 1916; Giglio-Tos 1927; Rehn 1935; Terra 1995; Roy 2002). Chopard (1916) considered that the diagnostic characters of Plesiacanthops, Metilia, Decimiana, were all of little relevance for making such distinction, and thus he considered these genera merely as "subdivisions" of Acanthops. However, Giglio-Tos (1927) and Rehn (1935) considered that those characters were valid because they are commonly used at genuslevel in other mantodean taxa. Roy (2002) recently revisited this issue and suggested that the differentiation between Metilia and Acanthops cannot be justified based on the number of forefemoral posteroventral spines. For instance, he argued that Acanthops tuberculata has 7 posteroventral spines, unlike the rest of species in the genus with only 6 spines, whereas A. amazonica (which normally presents 6, but males sometimes having 5 or 8 in either forefemur) should be transferred to Metilia, whose species also have 7 spines. Although we agree with Roy (2002) in that amazonica is not a member of Acanthops, the newly available evidence suggest that its placement among Metilia should be reconsidered. Accordingly, we now formally transfer Acanthops amazonica Beier, 1930 to Metacanthops.Published as part of Agudelo, Antonio A., Maldaner, Caroline & Rafael, José A., 2019, Dry leaf or twig mantis? A new genus and species of Acanthopidae with sexually dimorphic cryptic strategies (Insecta: Mantodea), pp. 331-344 in Zootaxa 4560 (2) on pages 332-334, DOI: 10.11646/zootaxa.4560.2.6, http://zenodo.org/record/262770
Decimiana gaucha Maldaner & Rafael, 2017, sp. nov.
No full text<i>Decimiana gaucha</i> sp. nov. <p>(Figures 1, 4)</p> <p> <b>Type material</b>: holotype ♂ (deposited at INPA), BRAZIL, RS [Rio Grande do Sul], Capão do Leão [31°46'3''S, 52°26'55''W], 28.xi.1994 (A. R. Reis Jr. Leg). Holotype is in good condition. <b>Other material</b> (all paratypes): Brasil, Rio Grande do Sul, Capão do Leão [31°46'3''S, 52°26'55''W], 1 ♂, 02.xi.1994 (A. Pinho Leg) (INPA), 1♂, idem, x.1995 (U.F. Thies leg.) (INPA), 1 ♂, idem, v.1996 (F.C. Maia leg.) (INPA); 1 ♂, idem, x.1996 (D. M. Coleleg.) (MECB); 1 ♂, RS, Pelotas [31°46'19"S, 52°20'33"W], xi. 1995 (N. Meyer leg.) (MECB); 1 ♂, idem, xii.1996 (L. Krüger leg.) (MECB); 1♂, idem, xi. 1996 (C.V. Silveira leg.) (MECB), 1 ♂, Piratini [31°26'53''S, 53°06'15''W], x.1995 (A. R. Romano leg.) (MECB).</p> <p> <b>Diagnosis:</b> Body brown (Fig. 1A). Ventral phallomere (Vph) (Fig. 1D) with distal process curved, gradually tapering distally; proximal process of Vph subtriangular, robust, with ribs on surface. Right dorsal phallomere (Rdp) (Fig. 1F) with ventral process falciform, pointed and with teeth (spines) well marked on the base; ventral plate with denticles. Left dorsal phallomere (Ldp) (Fig. 1E) with anterior process globose, with marginal denticles irregular and not pointed spines (teeth), distal portion with denticles, ending in a subtriangular point; membranous lobe small, slightly pronounced, with granulations and few thin setae.</p> <p> <b>Description</b> (male holotype)</p> <p> <i>Body coloration</i>: predominantly brown (Fig. 1A).</p> <p> <i>Head</i> (Fig. 1B–C). triangular in frontal view, its dorsal surface with sparse granulations; cuticle is brown (darker on top), with various contrasting maculae, thus appearing mottled; vertex more elevated than compound eyes, the latter conical in shape, and with a spine-like, apical process; ocellar tubercle developed, bearing two small and triangular, posterior projections (these are darker than the rest of ocelli) (Fig. 1C); lateral ocellus slightly conical, the central one is transversely oval; scutellum hexagonal (Fig. 1B–C), lighter than remaining of head, upper angle bifurcated, branches rounded and with small granulations; antenna predominantly moniliform, scape longer than any other individual antennomere.</p> <p> <i>Thorax</i> (Fig. 1A). <b>Pronotum</b>: longer than wide, with longitudinal median line well marked, proximal portion darker, bearing small granulations; supracoxal swelling well marked; prozona shorter and more elevated than metazona in lateral view, proximal portion with rounded edge; metazona shorter than prothoracic coxae. <b>Legs</b>: prothoracic leg with rectangular coxae, like a bar, light brown with darker maculae, surface exhibiting granules (most on anterior portion), dorsal margin with denticles; femur robust, marbled brown, with granules on both it posterior and anterior aspects (granules more evident on the latter), F=4DS/14AvS/6PvS; with denticles in between PvS; tibiae marbled, dorsal edge slightly convex, with small granules on its posterior aspect; T=15AvS/19PvS, respectively, tibial spines ventrally serrated and reclined; tarsomere I longer than all other tarsomeres taken together; tarsomeres spotted. Meso- and metathoracic legs with triangular coxae, robust, and slightly pilose; meso- and metafemora long and pilose, subrectangular in shape, marbled brown, ventral groove well-marked, and bearing one distal spine; meso- and metatibiae long, subretangular, marbled brown, pilose, and bearing two distal spines; all tarsomeres of cursorial legs pilose. <b>Wings</b>: mesothoracic wing (Fig. 1A) projecting beyond abdomen in resting position; costal area narrow, wider proximally, brown, darker than discoidal and anal areas; costal vein is slightly sinuous; stigma discrete, of color similar to the rest of the wing, just slightly brighter; jugal area dark brown (Fig.</p> <p>1A). Metathoracic wings (Fig. 1A) approximately as long as the mesothoracic pair, anal edge with marked sinuosity; costal area narrow, colored as in the mesothoracic wing; cells of discoidal area with dark brown central macula, the same become lighter or absent along the more marginal, distal cells.</p> <p> <i>Abdomen</i>. Long, rhomboidal in shape; tergites light brown with black, shiny macula distally, and with wider maculae on tergites V and VI; tergite V, dark, with rounded apex and a lateral swelling.</p> <p> <b>Male Genitalia</b> (Fig. 1D–F): Vph (Fig. 1D) subretangular, distal process (Dip) curved (Fig. 1D), gradually tapering distally, with apex somewhat rounded; proximal process (Pp) (Fig. 1D) subtriangular, robust and with striae, more sclerotized than the rest of the phallomere, apex of the process triangular. Rdp (Fig. 1F) subtriangular, anterior apodeme (Ap) slightly sclerotized and curved; membranous part with rounded apex and long setae; ventral process (Vpr) more sclerotized than anterior apodeme (Ap), falciform, pointed, with well-marked spines proximally, ventral plate (Vpl) esclerotized as in ventral process (Vpr), with denticles. Ldp (Fig. 1E) longer than wide, posterior process (Pop) slightly sclerotized, with small setae; anterior process (Anp) globose, with irregular denticles and without pointed spines (teeth), distal portion with denticles, ending in a subtriangular point; membranous lobe (ml) slightly pronounced, small, with granulations and few thin setae (Fig. 1E).</p> <p> <b>Measurements (holotype; in mm)</b>: body length: 53; head width: 6; pronotum length: 10; prozona: 3.8; prothoracic coxa: 9; prothoracic femur: 10; prothoracic tibia: 6; tibial claw: 2.4; mesothoracic wing: 41; metathoracic wing: 40. Dissected genitalia contained in a microvial with glycerin and pinned along the specimen.</p> <p> <b>Etymology</b>: the epithet <i>gaucha</i> means "being from Rio Grande do Sul ", the most southern state from Brazil and the geographic origin of the type series.</p> <p> <b>Geographical records:</b> Brazil (RS) (Fig. 4).</p> <p> <b>Variation observed in paratypes</b>. Body coloration among specimens occurs in various dark shades of brown. Some specimens exhibit some variation in density and arrangement of the granulations and/or denticles on the proximal process of the Vph, as well as on the ventral process of the Rdp. Some specimens exhibit ventral plate of the Ldp with membranous lobe bearing some setae, however these are always very thin and in few numbers. Ldp with some variation in the quantity and arrangement of the granulations and/or denticles on the anterior process of the ventral lamina. Measurement ranges: body lenght, 47–53; head width, 5.5–6; pronotum lenght, 9–10; prozona, 3–3.8; prothoracic coxa, 7.5–9; prothoracic femur, 9–10; prothoracic tíbia, 5–6; tibial claw, 2–2.2; mesothoracic wing, 37–41.</p> <p> <b>Comparative notes</b>. The new species differs from other members of <i>Decimiana</i> in having the distal process of Vph broad and gradually tapering distally (Fig. 1D), whereas the same in the other species is narrower and suddenly tapers distally (Fig. 3). The anterior process of Vph of <i>D. gaucha</i> is subtriangular in shape, similar to that of <i>D. elliptica,</i> but in the former the process is much more robust and has grooved surface (Fig. 1D), while in <i>D. bolivari, D. clavata. D. hebardi, D. rehni</i> and <i>D. tessellata</i>, the same structure is narrower, not grooved, and may exhibit some granulations or denticles. In addition, the ventral process of the Rdp of <i>D. gaucha</i> is strongly curved, falciform, sharp and bears denticles (Fig. 1F), while in the other species the same is less strongly curved and pointed, denticles are sparse when present, or it may exhibit ribs only. The anterior process of the ventral lamina of the Ldp of <i>D. gaucha</i> bears irregular teeth-like, blunt spines, the same are sparser towards the pointy apex (Fig. 1E) thus resembling the condition observed of <i>D. tessellata,</i> but in the latter species the anterior process of the ventral lamina is more developed, with well-marked spines and the apex not markedly pointed (Fig. 2 F). <i>Decimiana bolivari, D. hebardi</i> and <i>D. rehni</i> differ from <i>D. gaucha</i> for having the anterior process of the ventral lamina robust, varying the quantity of granulations or setae present along the structure (Fig. 2), and the distal portion has small granulations (denticles) and is not pointed. The anterior process of the ventral lamina of <i>D. elliptica</i> and <i>D. clavata</i> is not particularly developed, but the distal portion of the same is characteristic for being short and robust, its surface heavily sclerotized and bearing denticles (Fig. 2). The membranous lobes of the Ldp is normally little pronounced in <i>D. gaucha</i> <b>sp. nov.</b> (Fig. 1E), with few to no granulations or setae, whereas in <i>D. bolivari, D. clavata, D. elíptica, D. hebardi, D. rehni</i> and <i>D. tessellata</i> the same lobe generally exhibit a conspicuous number of setae and/or granulations (Fig, 2).</p> <p> We were able to identify two projections, both small and triangular, in the superior/posterior portion of the ocellar triangle (Fig. 1C, highlighted in green), which until now have never been described for the genus. These projections are present in <i>D. gaucha</i> <b>sp. nov.,</b> <i>D. tessellata</i> and <i>D. bolivari</i>, but its presence in the other species could not be verified at this time.</p>Published as part of <i>Maldaner, Caroline & Rafael, José Albertino, 2017, A new species of Decimiana Uvarov from Brazil, with updated key to species and remarks on their geographic distribution (Mantodea: Acanthopidae, Acanthopinae), pp. 521-530 in Zootaxa 4291 (3)</i> on pages 522-526, DOI: 10.11646/zootaxa.4291.3.5, <a href="http://zenodo.org/record/827678">http://zenodo.org/record/827678</a>
A new species of Decimiana Uvarov from Brazil, with updated key to species and remarks on their geographic distribution (Mantodea: Acanthopidae, Acanthopinae)
No full textMaldaner, Caroline, Rafael, José Albertino (2017): A new species of Decimiana Uvarov from Brazil, with updated key to species and remarks on their geographic distribution (Mantodea: Acanthopidae, Acanthopinae). Zootaxa 4291 (3): 521-530, DOI: https://doi.org/10.11646/zootaxa.4291.3.
Dichotomius (Selenocopris) geraldimi Maldaner & Vaz-de-Mello 2022, sp. nov.
No full text<i>Dichotomius (Selenocopris) geraldimi</i> sp. nov. <p> <i>Type material</i></p> <p> Holotype: BRAZIL: Minas Gerais. Santana do Riacho. PN Serra do Cipó C 5. 19°14 <b>ʹ</b> 21”S; 43° 32 <b>ʹ</b> 26”W. 1309 m. ii-2014. L.F. Ferreira [♂ CEMT].</p> <p> Paratypes: Same data as holotype [5♂ 12♀ CEMT]. Same data, but ii-2015. [2♀ CEMT]. Same locality, but C12. 19°14 <b>ʹ</b> 46”S; 43°33 <b>ʹ</b> 08”W. 1267 m. ii-2014. L.F. Ferreira. [1♂ CEMT]. Same data, but ii-2015. [1♀ CEMT]. Same locality, but C13. 19°14 <b>ʹ</b> 38”S; 43°33 <b>ʹ</b> 14”W. 1290 m. ii-2015. L.F. Ferreira. [1♀ CEMT].</p> <p> <i>Diagnosis</i></p> <p> <i>Dichotomius</i> (<i>S</i>.) <i>geraldimi</i> is readily diagnosed within the species group by the following combination of characters: body surface dark blue or green (Figure 2 (a–b)). Frontoclypeal region of males with conical process laterally compressed. Females with a high transverse clypeofrontal process very weakly emarginate at apex. Pronotal surface uniformly covered by simple punctures, including anterior angles and lateral portions (Figure 2).</p> <p> <i>Description</i></p> <p> <i>Holotype.</i> <b>Male</b>: Length: 14.3 mm. Maximum width of pronotum: 8.8 mm. Surface sericeous, with strong blue tinge. <b>Head</b>: Clypeogenal junction rounded. Clypeofrontal junction with a central acuminate conical elevation. Clypeus with simple shallow punctures, surface with irregularly reticulate microscuplture. <b>Thorax</b>: anteromedial projection rounded, very weakly emarginate apically, forming two rounded, barely distinguishable lobes. Anterior side of pronotum with two strong depressions below projection, separated by a vertical region as wide as half width of central lobe and connected to it. Pronotal disc, posterior and lateral borders with simple and evenly spaced punctures, more closely spaced anteriorly and laterally. Anterior angles right. Hypomeron with dark brown to black setae, dense and similar to those on metasternum and femora, some visible from dorsal view, surface with simple sparse punctures in the middle and medially, ocellate and closer anteriorly, posteriorly and laterally. Mesosternum covered by ocellate punctures with dense setae. Metasternum densely setose laterally and close to anterior region, setae similar to those on hypomeron, femora and mesepisternum. Mesometasternal suture distinct. Elytral striae deeply impressed, defined by simple punctures spaced by at least four times their diameter. Interstriae finely and sparsely punctured. <b>Legs</b>: Ventral surface of profemur with strong ocellate punctures posteriorly and apically. Meso- and metafemora with few setose punctures, concentrated apically. Anterior and posterior borders of femora with dense, dark brown to black setae. Mesotibiae with blue sheen. <b>Abdomen</b>: Sixth ventrite strongly shortened medially, lateral regions of ventrites with setae. Anterior margin of ventrites with a row of punctures. Pygidium as long as wide, covered by fine and equally spaced punctures (30×), with weak purple/violet sheen. <b>Parameres</b>: Paramera subtriangular, 2/3 as long as phallobase. In ventral view, lateral sclerotised region of paramera basally excavated. In lateral view, apex of parameres dorsoventrally flattened. In dorsal view, apexes laterally expanded with external margins rounded.</p> <p> <i>Variation</i></p> <p>Total length varying from 11.5 to 14.3 mm. Small males have cephalic tubercle reduced and pronotal projection reduced. Females differ from males by cephalic tubercle wider and slightly bilobed in larger individuals, weakly emarginated in smaller ones, with paired lobes directed upward. Pronotum with weak projections and excavations in the same regions as males. Sixth sternite almost twice as large as fifth medially.</p> <p> <i>Etymology</i></p> <p>Named after Prof. Dr. G. (‘Geraldim’) Wilson Fernandes, from Universidade Federal de Minas Gerais (UFMG), for his great efforts over the last several decades to work and gather people working on the ecology and conservation of the region where this species was collected (all type specimens mentioned in this study were collected by his research group).</p> <p> <i>Distribution</i></p> <p>Known only from Serra do Cipó, one of the southernmost parts of the huge and complex Espinhaço range in the Eastern part of the Cerrado and Southern Caatinga of Brazil (Figure 1).</p>Published as part of <i>Maldaner, Maria Eduarda & Vaz-de-Mello, Fernando Z., 2022, New data and species for the Dichotomius speciosus (Waterhouse, 1891) species group (Coleoptera: Scarabaeidae: Scarabaeinae), pp. 2999-3006 in Journal of Natural History 55 (47 - 48)</i> on pages 3002-3004, DOI: 10.1080/00222933.2022.2025941, <a href="http://zenodo.org/record/6351834">http://zenodo.org/record/6351834</a>
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
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
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