178,933 research outputs found
Correspondence : Osten-Sacken (Carl) and Engelmann (George), 1876
No full textOsten-Sacken to Engelmann, 187
Catalogue of the described diptera of North America
No full textC. R. Osten-SackenExlibrisstempel: "Entomologische Sammlung der eidgen. techn. Hochschule Zürich" 011145977_0001 Exemplar der ETH-BI
On the oxen-born bees of the ancients '(Bugonia)' and their relation to Eristalis tenax, a two-winged insect
No full textC. R. Osten SackenEnlarged edition of the essay: On the so-called Bugonia of the ancients etc. published in the Bullet. soc. ent. ital. 1893Geschenkexlibris-Etikette: "Geschenk aus dem Nachlass von August Waldner." 002230265_0001 Exemplar der ETH-BIBHandschriftliches Geschenkexlibris: "An Herrn A. Waldner, in Zürich hochachtungsvoll vom Verfasser C.R. Osten Sacken Heidelberg, d. 29. April 1896." 002323175_0001 Exemplar der ETH-BI
U. Steinbach et R. Robert. Der Nahe und Mittlere Osten
No full textGroc Gérard. U. Steinbach et R. Robert. Der Nahe und Mittlere Osten. In: Politique étrangère, n°4 - 1989 - 54ᵉannée. pp. 793-794
H. H. von der Osten et R. Naumann. Takht-i-Suleiman.
No full textSchlumberger Daniel. H. H. von der Osten et R. Naumann. Takht-i-Suleiman.. In: Syria. Tome 40 fascicule 1-2, 1963. pp. 190-195
Coronal Spectroscopy for Dynamo Studies
No full textMagnetic reconnection lies at the heart of much stellar phenomena in the cool half of the H-R diagram, and X-ray studies of stellar coronae have revealed the intricate interplay of plasma and magnetic fields, ultimately produced as the result of a dynamo process. The breakthrough of Chandra and XMM-Newtons high resolution spectrometers for these stars lay in revealing the wealth of diagnostic information, used to demonstrate the structuring and energetics of hot plasma, and the extent to which magnetic fields shape and influence stellar surroundings. In this talk I will describe how high resolution, high throughput spectra with the XRS continue the challenge of linking a well-studied star like our Sun with representative stellar samples to probe dynamos in the stellar extremes of thick/thin outer convection zones, and time-varying influences of magnetic fields.Session 4: Physics of New Worlds
Chair: Martin Lamin
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
Steinepigramme aus dem griechischen Osten
No full textEine Durchsicht des kürzlich von R. Merkelbach und J. Stauber vorgelegten Bandes Steinepigramme aus dem griechischen Osten, Band l. Die Westküste Kleinasiens von Knidos bis Ilion, Stuttgart und Leipzig 1998, gibt Anlaß zu den folgenden Ausführungen
Dicranoptycha Osten Sacken
No full textDicranoptycha Osten Sacken Marginomyia Meigen, 1818 (nomen nudum). Dicranoptycha Osten Sacken, 1859: Lackschewitz & Pagast (1942); Ishida (1959); Savchenko & Krivolutskaya, 1976; Savchenko (1982, 1983, 1989). Type species— Dicranoptycha germana Osten Sacken, 1859. Korean short-palped crane flies, belonging to genus Dicranoptycha Osten Sacken, 1859 are comparatively large, with a wing length ranging from 8.0 to 11.5 mm (Fig. 1). Main body color varies from gray to brown and light brown, sometimes even brownish yellow (Fig. 2). Antennal flagellum 14 -segmented. Distinct tubercular pits situated some distance beyond frontal margin of thoracical prescutum, pseudosutural fovea close to them (Fig. 3). Wing long, grayish or brownish, sometimes darkened along longitudinal veins. Stigma indistinct. Vein Sc long, tip of Sc 1 reaches distinctly beyond branching point of Rs, Sc 2 close to Sc 1 tip. Arculus present. Cross-vein R 2 close to R 1 tip. Radial sector (Rs) comparatively short and could be variable even in same species. It is usually slightly arched, but could be also angulated and short-spurred at base. It branches into two veins R 2 + 3 and R 4 + 5. Discal cell closed, elongate. Basal deflection of CuA 1 distinctly beyond branching point of M, usually before mid-length of discal cell. The most distinctive feature of the genus is fold in cell cu (Fig. 4), which is not known in other genera of Limoniidae. Meron is strongly reduced, thus second and third pairs of coxae are close together. Male genitalia slightly elongate. Ninth tergite and ninth sternite forming complete genital ring. Posterior margin of ninth tergite with large shallow median incision. Lateral process of lateral apodeme of vesica large. Two pairs of terminal gonostyli. Outer gonostylus usually dark, strongly sclerotised and slightly arched. Inner gonostylus wide and fleshy. Edeagal complex usually strongly complicated and species-specific. Ovipositor with comparatively short, widened, round-tipped cercus. Some non-Korean species have modified and widely spread cerci. Korean Dicranoptycha start flying comparatively late, from the middle of June, but they are most active in late summer and fall. Larvae are metapneunistic, developing in soil under leaf litter or wood debris (Young, 1987).Published as part of Podenas, Sigitas, Byun, Hye-Woo & Kim, Sam-Kyu, 2015, New Dicranoptycha Osten Sacken, 1859 Crane flies (Diptera: Limoniidae) of North and South Korea, pp. 257-270 in Zootaxa 3925 (2) on page 259, DOI: 10.11646/zootaxa.3925.2.7, http://zenodo.org/record/24093
- …
