Universitätspublikationen
17 search hits
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Wiwi news : newsletter of the Faculty of Economics and Business Administration
(2010)
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Measuring shear viscosity using correlations
(2007)
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Sean Gavin
Mohamed Abdel-Aziz
- Measurements of transverse momentum fluctuations can be used to determine the shear viscosity [1]. We use current data to estimate the viscosity-to-entropy ratio in the range from 0.08 to 0.3, and discuss how future measurements can reduce this uncertainty.
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Extraction of network topology from multi-electrode recordings: is there a small-world effect?
(2011)
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Felipe Gerhard
Gordon Pipa
Bruss Lima
Sergio Neuenschwander
Wulfram Gerstner
- The simultaneous recording of the activity of many neurons poses challenges for multivariate data analysis. Here, we propose a general scheme of reconstruction of the functional network from spike train recordings. Effective, causal interactions are estimated by fitting generalized linear models on the neural responses, incorporating effects of the neurons’ self-history, of input from other neurons in the recorded network and of modulation by an external stimulus. The coupling terms arising from synaptic input can be transformed by thresholding into a binary connectivity matrix which is directed. Each link between two neurons represents a causal influence from one neuron to the other, given the observation of all other neurons from the population. The resulting graph is analyzed with respect to small-world and scale-free properties using quantitative measures for directed networks. Such graph-theoretic analyses have been performed on many complex dynamic networks, including the connectivity structure between different brain areas. Only few studies have attempted to look at the structure of cortical neural networks on the level of individual neurons. Here, using multi-electrode recordings from the visual system of the awake monkey, we find that cortical networks lack scale-free behavior, but show a small, but significant small-world structure. Assuming a simple distance-dependent probabilistic wiring between neurons, we find that this connectivity structure can account for all of the networks’ observed small-world-ness. Moreover, for multi-electrode recordings the sampling of neurons is not uniform across the population. We show that the small-world-ness obtained by such a localized sub-sampling overestimates the strength of the true small-world structure of the network. This bias is likely to be present in all previous experiments based on multi-electrode recordings.
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FIAS Scientific Report
(2011)
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"PULS." – a Blog-based Online-Magazine for Students of Medicine of the Goethe University Frankfurt
(2013)
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Bettina Wurche
Gertrud Klauer
Frank Nürnberger
- In the context of nationwide protests 2009 also students of the faculty of medicine/dentistry at Goethe-University in Frankfurt demanded more transparency and communication. To satisfy these demands, a web 2.0-tool offered an innovative solution: A blog-based online-magazine for students and other faculty-members.
The online-magazine „PULS.“ is realized with the share-ware blog-software (wordpress version 3.1.3) and is conceived and written by an online-journalist. „PULS.“ is available from https://newsmagazin.puls.med.uni-frankfurt.de/wp/.
The articles are generated from own investigations and from ideas of different groups of the faculty– deanship, students and lecturers. A user-analysis is conducted with the open-source software Piwik and considers the data security. Additionally, every year an anonymous online-user-survey (Survey Monkey) is conducted.
“PULS.” is continuously online since 14.02.2010 and has published 806 articles (state: 27.11.2012) and has about 2400 readers monthly. The content focuses on the needs of Frankfurt medical students. The close cooperation with different groups of the faculty - deanship, students and lecturers - furthermore guarantees themes relevant to the academic faculty. “PULS.” flanks complex projects and decisions with background-information and communicates them understandable.
The user-evaluation shows a growing number of readers and a high acceptance for the online-magazine, its themes and its style. The web 2.0-tool “Blog” and the web-specific language comply with media habits of the main target group, the students of the faculty medicine/dentistry.
Thus, “PULS.” has proven as a suitable and strategic instrument. It pushes towards a higher transparency, more communication and a stronger identification of the students with their faculty.
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LOCKSS (Lots of Copies Keep Stuff Safe) : Vortrag am 6th Frankfurt Scientific Symposium, GNARP und wie sie die Welt sieht: Aussichten transatlantischer Partnerschaft im digitalen Zeitalter: 5.10.2006 - 7.10.2006
(2006)
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Michael Seadle
- The LOCKSS (Lots of Copies Keep Stuff Safe) Alliance is an international community of about 100 libraries and partners like OCLC. For almost a decade the LOCKSS open source model has been tested for its robustness against attack and for its ability to migrate formats. LOCKSS »boxes« at 150 institutions in more than 20 countries comprise a peer-to-peer system that automatically cross-checks content to ensure the accuracy and completeness of all member archives. Eighty publishers, including large publishers like Oxford University Press, are now participating in LOCKSS or actively preparing to add their journals to the program.
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The Harvard Judaica Collection : Vortrag am 6th Frankfurt Scientific Symposium, GNARP und wie sie die Welt sieht: Aussichten transatlantischer Partnerschaft im digitalen Zeitalter: 5.10.2006 - 7.10.2006
(2006)
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Elizabeth Vernon
- The mission of the Harvard Judaica Collection is to comprehensively document Jewish history and civilization in all places and periods. To accomplish its mission, the Judaica Collection collects materials in all languages and in all formats—books, pamphlets, periodicals, newspapers, sound recordings, and videos, posters, broadsides, and photographs. A particular focus is the Library’s Documenting Israel program, which covers all aspects of Israeli life and culture in great depth; Harvard has the largest collection of Israeli publications and Israel-related materials outside the State of Israel. The Harvard Judaica Collection also attempts to have comprehensive coverage of the publications of Jewish communities throughout the globe, including a significant collection of publications from countries across Europe. Collecting these materials requires cooperation with a wide array of institutions and individuals around the world.
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German Studies in the United States : Vortrag am 6th Frankfurt Scientific Symposium, GNARP und wie sie die Welt sieht: Aussichten transatlantischer Partnerschaft im digitalen Zeitalter: 5.10.2006 - 7.10.2006
(2006)
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Elisabeth Remak-Honnef
- To stimulate further discussion, I would like to briefly tackle the following questions: * How can one become informed about what is going on in German Studies in the US? * What kinds of American guides to German resources are available? * What kinds of German Studies resources are being produced in the US? * What do we know about how scholars are using (or not) these guides and resources?
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Comparative views and prospects for transatlantic cooperation: India and South Asia : Vortrag am 6th Frankfurt Scientific Symposium, GNARP und wie sie die Welt sieht: Aussichten transatlantischer Partnerschaft im digitalen Zeitalter: 5.10.2006 - 7.10.2006
(2006)
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Avinash C. Maheshwary
- U. S. library resources on South Asia that were built around the limited needs of a handful of Sanskritics before World War II have made a long journey during the past half century. Since the inception of the Library of Congress Cooperative South Asia Acquisition Program (formerly called "PL-480" program), in 1962, libraries have built significant collections with financial support from governmental agencies and philanthropic foundations, to support teaching and research in all areas of social sciences and humanities. These collections have been supplemented by efforts to build retrospective collections and to microfilm rare materials in British and South Asian libraries and archives. Today, in cooperation with South Asian libraries, several projects are underway to preserve and digitize rapidly deteriorating materials so that these riches can be shared with the global scholarly community through electronic means.
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Staging a Supplement : Judge Adam, Advocate “Liebling” and William, the Detective
(2006)
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Thomas-M. Seibert
- Legal practice is based on something that is not only an integral part of it and complements it, but also puts it into question generally. The compulsion to argue and reach decisions in a legal trial clarifies simultaneously that all forms of decision are inapproprate, unreasonable, and can be recreated in an entirely new manner [to suit the needs of the trial]. This is the legalistic supplement in the spirit of Jacques Derrida. The legal truth is supplemented by other forms of media such as drama, film and literature, which are able to stage scenes that cannot be experienced in a real life legal world, but – as no legal official would deny – are an integral part of the trial and verdict procedure.
