312,093 research outputs found
Ludger Gerdes
No full textRefering mainly to Kant, Riegl, and Gombrich, Gerdes defines the conditions favourable to an autonomous art outside the museum's walls. In an interview with Guzman, the artist comments on his developments, his influences, his interest in maquettes as models, and in English landscaping in the 18th century. Biographical notes
Ludger Gerdes : Essays
No full textRaising issues of image, modernism, architecture and design of public places, Gerdes expounds his conception of art in four texts written between 1983 and 1987. Inspired by the writings of Habermas, he examines the impact of art on collective life
Florilegium historico-criticum librorum rariorum : cui multa simul scitu iucunda adsperguntur, historiam omnem litterariam, & cumprimis reformationis ecclesiasticam illustrantia
No full text[Daniel Gerdes]Titelvignett
... Praemisso usurarum iure
No full text... pro summis in utroque iure docturae adipiscendis honoribus ac priviliegiis alterius tanti examen publico credit iudicio Georgius Gerdes Lübecensis, ad diem ... Augusti, horis locoque solitisDatum auf der Titels. hs. erg.: ad diem 28. AugustiDiss. iur. Basel, 164
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
Gerdes de oídas
No full textRecoge los enlaces de tres interpretaciones de obras de Federico Gerdes: "Homenaje a Watteau" (Gavota) por Guadalupe Parrondo, "Homenaje a Bécquer" (Berceuse) por Guadalupe Parrondo e "Impresiones de la tarde" por Carlos Johnson (violín) y Katia Palacios (piano)
Book Review: Interrogating Gendered Pathologies, Edited by Erin A. Frost & Michelle F. Eble
No full textBook Review: Interrogating Gendered Pathologies. Erin A. Frost & Michelle F. Eble, Eds. Louisville, CO: University Press of Colorado, 2020. 279 pages, 28.95 e-book, $14.50 30-day e-book rental.
Publisher webpage: https://upcolorado.com/utah-state-university-press/item/3819-interrogating-gendered-pathologies
Review by Julie Gerdes, Department of English, Virginia Tech, Blacksburg, VA
E-mail: [email protected]
Date Posted: June 2023
Recommended Citation: Gerdes, Julia. (2023) “Book review: Interrogating Gendered Pathologies,” Rhetoric of Health & Medicine: Vol. 6: Iss. 3
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
A seafloor crater in the German Bight and its effects on the benthos
No full textIn 1963 a deep crater was formed about 65 m below sea level in the western part of the German Bight, due to a gas eruption caused by drilling carried out from the platform ’Mr. Louie'. The study area is situated in a sandy to muddy bottom area inhabited by an Amphiura filiformis association (sensu Salzwedel et al. 1985). The crater, sometimes called ’Figge-Maar', functions as a sediment trap, concentrating particles and organisms from the water column, thus leading to extreme sedimentation rates of about 50 cm, on average, per year. Crater stations, compared with stations situated in the vicinity, show enrichments of juveniles. Echinoderms, especially the subsurface-dwelling heart urchin Echinocardium cordatum and ophiuroids are responsive to enrichment. Other species that are typical of the Amphiura filiformis association are shown to be unable to cope with the special conditions in the crater.<br/
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