107,256 research outputs found
Florilegium historico-criticum librorum rariorum : cui multa simul scitu iucunda adsperguntur, historiam omnem litterariam, & cumprimis reformationis ecclesiasticam illustrantia
No full text[Daniel Gerdes]Titelvignett
Gerdes visto por sus contemporáneos
No full textContiene tres textos dedicados a Federico Gerdes: "LIED" poesía de Alberto Ureta, "Un Lied de Federico Gerdes" de Antonio Pinilla Rambaud, y “Homenaje a Watteau, de Federico Gerdes" de G. S. C., transcritos literalmente de los textos originales
Neuronal representation of visual motion and orientation in the fly medulla
No full textSpalthoff C, Gerdes R, Kurtz R. Neuronal representation of visual motion and orientation in the fly medulla. Frontiers in Neural Circuits. 2012;6:72.In insects, the first extraction of motion and direction clues from local brightness modulations is thought to take place in the medulla. However, whether and how these computations are represented in the medulla stills remain widely unknown, because electrical recording of the neurons in the medulla is difficult. As an effort to overcome this difficulty, we employed local electroporation in vivo in the medulla of the blowfly (Calliphora vicina) to stain small ensembles of neurons with a calcium-sensitive dye. We studied the responses of these neuronal ensembles to spatial and temporal brightness modulations and found selectivity for grating orientation. In contrast, the responses to the two opposite directions of motion of a grating with the same orientation were similar in magnitude, indicating that strong directional selectivity is either not present in the types of neurons covered by our data set, or that direction-selective signals are too closely spaced to be distinguished by our calcium imaging. The calcium responses also showed a bell-shaped dependency on the temporal frequency of drifting gratings, with an optimum higher than that observed in one of the subsequent processing stages, i.e., the lobula plate. Medulla responses were elicited by on- as well as off-stimuli with some spatial heterogeneity in the sensitivity for “on” and “off”, and in the polarity of the responses. Medulla neurons thus show similarities to some established principles of motion and edge detection in the vertebrate visual system
Dual citizenship as a path-dependent process
No full textFaist T, Gerdes J, Rieple B. Dual citizenship as a path-dependent process. COMCAD Arbeitspapiere - working papers, 7. Bielefeld: COMCAD - Center on Migration, Citizenship and Development; 2004
Friedman, G.M. & Krumbein, W.E. (Editors). — Hypersaline ecosystems. The Gavish Sabka. In cooperation with M.R. Buyce and G. Gerdes. Berlin, Heidelberg, New York and Tokyo, Springer-Verlag, Ecological Studies, Volume 53, 1985
No full textBourlière François. Friedman, G.M. & Krumbein, W.E. (Editors). — Hypersaline ecosystems. The Gavish Sabka. In cooperation with M.R. Buyce and G. Gerdes. Berlin, Heidelberg, New York and Tokyo, Springer-Verlag, Ecological Studies, Volume 53, 1985. In: Revue d'Écologie (La Terre et La Vie), tome 41, n°2-3, 1986. pp. 272-273
Die Wiederkehr des funktionalen Analphabetismus in Zeiten wissensgesellschaftlichen Wandels und die Komplexität subjektiver Kompetenzen
No full textBittlingmayer UH, Drucks S, Gerdes J, Bauer U. Der (Alp-)Traum fortwährender Bildungsexpansion. In: Quenzel G, Hurrelmann K, eds. Bildungsverlierer: Neue Ungleichheiten. 1st ed. Wiesbaden: VS Verlag; 2010: 341-374
The benthic macrofauna of the inner German Bight: present and past
No full textIn July and August 1995, a macrobenthos survey in the sublittoral of the inner German Bight was carried out at 16 stations around the island of Helgoland. 44 single multibox cores provided the basis for analysis of the distribution of macrobenthic organisms and their abundance and biomass. In total 84 species and 3 taxonomic groups were identified. The mean abundance (5808 Ind. m-2) and mean biomass (total wet weight m-2) of 668.5 g indicate a strong overall increase compared to previous investigations; in addition, changes in the composition of the fauna were revealed
Bibliographie Hilarion G. Petzold 1958 – 2009 mit Anhang als Einführung
No full textDieses Archiv enthält die Gesamtbibliographie der Werke des Autors nebst einiger Texte „Über H. G. Petzold“ im Schlussteil der Bibliographie sowie einen Anhang mit einer Einführung in die Architektur des Werkes in seinem wissenslogischen Aufbau als Ausarbeitung seines „Tree of Science Modells“ (2007).This archive contains the complete bibliography of the author and some texts about H. G. Petzold, moreover an epilogue with an introduction to the architecture of the works in its epistemological structure and composition and as an elaborations of Petzold’s „Tree of Science Modell (2007).https://www.fpi-publikation.de/polyloge/01-2009-petzold-h-g-gesamtbibliographie-h-g-petzold-1958-2009-updating-november2009/peerReviewedpublishedVersio
Transnationalisation and Institutional Transformations. Collected Working Papers from the TRANS-NET Project
No full textFaist T, Pitkänen P, Gerdes J, Reisenauer E, eds. Transnationalisation and Institutional Transformations. Collected Working Papers from the TRANS-NET Project. COMCAD Arbeitspapiere - working papers. Vol 87. Bielefeld: COMCAD - Center on Migration, Citizenship and Development; 2010
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