325,375 research outputs found
Styphlus (s. str.) eteocretus sp. n. from Greece (Coleoptera: Curculionidae)
No full textChristoph Germann, Herbert Winkelmann (2016): Styphlus (s. str.) eteocretus sp. n. from Greece (Coleoptera: Curculionidae). Entomologist's Monthly Magazine 152: 53-58, DOI: 10.5281/zenodo.16653
Figs 2–7 in Styphlus (s. str.) eteocretus sp. n. from Greece (Coleoptera: Curculionidae)
No full textFigs 2–7. — Styphlus eteocretus sp. n., genital organs, ♂: 2, penis (dorsal view); 3, penis (lateral view); 4, median lobus (ventral view); ♀: 5, spermatheca; 6, ovipositor; 7, spiculum ventrale.Published as part of Christoph Germann & Herbert Winkelmann, 2016, Styphlus (s. str.) eteocretus sp. n. from Greece (Coleoptera: Curculionidae), pp. 53-58 in Entomologist's Monthly Magazine 152 on page 55, DOI: 10.5281/zenodo.16653
Fig. 1 in Styphlus (s. str.) eteocretus sp. n. from Greece (Coleoptera: Curculionidae)
No full textFig. 1. — Styphlus eteocretus sp. n., holotype, ♂: habitus (dorsal and lateral views).Published as part of Christoph Germann & Herbert Winkelmann, 2016, Styphlus (s. str.) eteocretus sp. n. from Greece (Coleoptera: Curculionidae), pp. 53-58 in Entomologist's Monthly Magazine 152 on page 54, DOI: 10.5281/zenodo.16653
Teaching (with) Zombies – Konzeption bilingualer Sequenzen für das Sachfach Pädagogik am Beispiel postapokalyptischer Gesellschaftsszenarien
No full textWinkelmann S. Teaching (with) Zombies – Konzeption bilingualer Sequenzen für das Sachfach Pädagogik am Beispiel postapokalyptischer Gesellschaftsszenarien. Bielefeld: Universität Bielefeld; 2025
Zullobalanus santamariaensis Buckeridge & Winkelmann, sp. nov.
No full text<i>Zullobalanus santamariaensis</i> Buckeridge & Winkelmann sp. nov. <p>(Figures 2–3)</p> <p> <b>Diagnosis.</b> <i>Zullobalanus</i> with shell lacking external apico-basal ribbing; tergum only weakly reflexed apically, but possessing extensive, well-formed crests for depressor muscle attachment; scutum with moderately produced articular ridge and moderate to weak adductor muscle scar.</p> <p> <b>Distribution and age.</b> Azores; Late Miocene – Early Pliocene.</p> <p> <b>Type material.</b> Holotype containing 2 sample compositions: DBUA-F 536.1, complete shell (3.23 mm in height and 3.39 mm in basal diameter), carina (5.44 mm in height), carinolatus, (5.36 mm in height), latus (1.84 mm in height), rostrum (2.59 mm in height), scutum (2.50 mm in articular margin), tergum (3.44 mm in articular margin); DBUA-F 536.2, complete shell (6.31 mm in height and 6.63 mm in basal diameter), carina (4.89 mm in height), carinolatus, (4.79 mm in height), latus (3.36 mm in height), rostrum (2.30 mm in height), scutum (2.43 mm in articular margin), tergum (3.61 mm in articular margin); Santa Maria, Malbusca outcrop (25°4'7.04"W, 36°55'45.53"N [30 m asl]); S.P. Ávila & K. Winkelmann, 22–29 June 2008. Paratypes all with same locality, collectors and date as the holotype: Natural History Museum Berlin: MB.A 1733, MB.A 1734; Natural History Museum Vienna: NHMW 2010/0088/0001, NHMW 2010/0088/0002; Royal Belgian Institute of Natural Sciences Brussels: IRSNB 7255a–g, IRSNB 7256a–g; Natural History Museum London: NHM IC 549 – NHM IC 562; Muséum National d’Histoire Naturelle Paris: MNHN A32053, MNHN A32054.</p> <p> <b>Description.</b> Shell conic, height approximating basal diameter; exterior rough, longitudinal ribbing weak to absent, lateral growth lines weak; orifice rhomboidal (Fig. 2 A, B); interior with strong ribbing, with minor bifurcation of some ribs near basis; rib cross-section showing simple arborescent interlaminate structures (Fig. 2 B, C); sheath smooth, well developed, pendant, occupying up to 50% of height of inner surface; basis firmly interlocking with parietal ribs; radii moderately narrow, with oblique summits, growth lines parallel to basis crossed by fine growth striae parallel to alar abutment (Fig. 2 B); alae with marginal extensions, summits almost horizontal (Fig. 2 B).</p> <p>Scutum (Fig. 3 A, B) very weakly reflexed apically; exterior with strong transverse growth ribs crossed by weak apico-basal striae; interior with articular ridge moderately produced, slightly pendant basally; adductor ridge weak, broadly rounded; adductor muscle scar moderate to weak, pit for lateral depressor muscles well formed lacking any obvious muscle attachment crests. Tergum (Fig. 3 C, D) moderately elongate, spur wellformed, removed from basi-scutal angle by own width and extending beyond same angle by approximately its own width, furrow well-formed distally, externally with well spaced growth lines, in some areas (especially basally), fine apico-basal striae present; interior with longitudinal furrow on articular margin wide, open, shallow, smooth except for weak growth striae; articular ridge well-formed, concave towards articular margin; crests for depressor muscles well developed basally, extending as a zone of raised papillae nearer the apex; articular ridge gently curved to extend slightly beyond a broadly concave basal margin; apex with approximately 3–4 strong transverse growth lines in adults.</p> <p> <b>Occurence at Santa Maria Island.</b> All the Late-Miocene and Early-Pliocene outcrops studied in Santa Maria contained the endemic barnacle <i>Zullobalanus santamariaensis</i> <b>sp. nov.</b> Most specimens were found at Malbusca and at “Pedra-que-Pica” outcrops. The beds at “Pedra-que-Pica” contained some well preserved but rare barnacles with opercula cemented to diverse marine molluscs (e.g. <i>Gigantopecten latissimus</i> (Brocchi, 1814) and <i>Lopha plicatuloides</i> (Mayer, 1864)); the beds at Malbusca contained a number of loose opercula in a sandy matrix. At Cré outcrop, rare single walls as well as opercula were present. In the more lithified marine sediments of Figueiral and Ponta do Castelo, barnacle fragments were only observed on eroded surfaces. At Ponta dos Frades, a few barnacle fragments were found together with well preserved micro-molluscs on eroded bottom surfaces. Nevertheless, we detected fragments of <i>Zullobalanus santamariaensis</i> <b>sp. nov.</b> in every sampled Miocene/Pliocene outcrop.</p> <p> <b>Remarks and affinities.</b> There is an extensive archaeobalanid fauna known from western Europe (Carriol, 2008) and the eastern seaboard of North America (Zullo 1984; Zullo & Kite 1985; Zullo & Perreault 1989; Zullo & Portell 1991). Of these, species of <i>Actinobalanus</i> are distinguished from this taxon by their porous bases; <i>Hesperibalanus</i>, the terga of which lack the well-formed nodose papillae on the internal surface and the broad spur; <i>Solidobalanus</i> by the externally smooth compartments; and <i>Lophobalanus</i> by their very narrow radii.</p> <p> <i>Zullobalanus santamariaensis</i> <b>sp. nov.</b> differs from all other <i>Zullobalanus</i> species by a lack of clearly formed external ribbing on the shell. Although there are some weak “ribs” these are somewhat obscured by the generally rough surface of the shell. The weakly reflexed scutal apex is close to that seen in the Australian species <i>Zullobalanus australiae victoriae</i> (Buckeridge, 1983) and in most respects it is closest to this species. In addition to the lack of external ribbing, it differs from <i>Z. australiae victoriae</i> by the presence of numerous well-formed crests for depressor muscles on the tergum.</p> <p> The scutal articular ridge is often basally pendant in larger specimens of <i>Zullobalanus</i> species (Buckeridge 1983), and although this has not been clearly seen in the material available, we should be mindful that all larger scuta are isolated and since shell disarticulation, have been abraded, as such wearing away delicate extensions.</p> <p> <b>Etymology.</b> Geographic: Island of Santa Maria (noun in apposition).</p>Published as part of <i>Winkelmann, Kai, Buckeridge, John S., Costa, Ana Cristina, Dionísio, Maria Ana Manso, Medeiros, André, Cachão, Mário & Ávila, Sérgio P., 2010, Zullobalanus santamariaensis sp. nov., a new late Miocene barnacle species of the family Archaeobalanidae (Cirripedia: Thoracica), from the Azores, pp. 33-44 in Zootaxa 2680</i> on pages 36-39, DOI: <a href="http://zenodo.org/record/199324">10.5281/zenodo.199324</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
Der Briefwechsel zwischen Friedrich Carl von Savigny und Stephan August Winkelmann : (1800 - 1804) ; mit Dokumenten und Briefen aus dem Freundeskreis
No full textElektronische Reproduktion von: Der Briefwechsel zwischen Friedrich Carl von Savigny und Stephan August Winkelmann : (1800 - 1804) ; mit Dokumenten und Briefen aus dem Freundeskreis / ges., hrsg. und kommentiert von Ingeborg Schnack. - Marburg : Elwert, 1984. - VII, 533 S. .- (Hessische Briefe des 19. Jahrhunderts ; 3) (Veröffentlichungen der Historischen Kommission für Hessen ; 23,3). -
Standort: Hessisches Landesamt für geschichtliche Landeskunde. -
Bemerkungen:
(Hassiaca)
Digitalisiert 202
Asymmetric Vertical Integration
No full textWe examine vertical backward integration in a reducedform model of successive oligopolies. Our key findings are: (i) There may be asymmetric equilibria where some firms integrate and others remain separated, even if firms are symmetric initially; (ii) Efficient firms are more likely to integrate vertically. As a result, integrated firms also tend to have a large market share. The driving force behind these findings are demand/mark-up complementarities in the product market. We also identify countervailing forces resulting from strong vertical foreclosure, upstream sales and endogenous acquisition costs.successive oligopolies, vertical integration, effciency, foreclosure
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