Strategy for the Digitalization of the Local Television Program Archives in Saxony

The German Free State of Saxony has a high density of independent local and regional television broadcasters. From the antenna communities at the time of the GDR, private TV broadcasters developed after the reunification. In the period of the social transformations in the 1990s, these local TV stations documented the profound changes of the everyday life of the individual, of the local communities and the historical transformations in society and economy during the early years after the German reunion. These recordings are a substantial part of the cultural heritage of Saxony and of the highest interest for social, cultural and media research. Due to how the original material was produced on consumer videotapes, today the recordings are threatened by decay. In the next few years the recordings will be lost, if not acted quickly. Some state and private institutions are currently developing concepts for the preservation of the audiovisual heritage in Saxony In this paper, we discuss how these media objects should be scientifically investigated, in the sense of media and sociocultural dimensions, questions and categories. Based on our experiences and investigations, we present a technical concept which shows how to digitalize, index, describe and categorize copious amounts of videotapes for the preservation, archiving and public access of this important part of the cultural heritage of Germany

Hochschulfernsehen in Deutschland: Zwischen Distributionsautonomie und Einzelkampf: Broschüre zur Tagung vom 28.-29. Juni 2013

In den vergangenen drei Jahren wurde mit dem Launch der Plattform hochschultv.de die Etablierungsphase eines übergreifenden deutschsprachigen Hochschulfernsehens abgeschlossen; mittlerweile konnte ein funktionierendes Netzwerk von vierzehn Sendern gesponnen werden. Die Leipziger Tagung „Hochschulfernsehen im digitalen Zeitalter – Zwischen Distributionsautonomie und Einzelkampf“ im Juni 2013 sollte in die Kooperationsphase überleiten und den Zusammenschluss über die Plattform hinaus stärken, beispielsweise durch thematische Bündelung von Beitragsreihen bis hin zu einer bundesweiten Sendung. Der vorliegende Band kondensiert die Inhalte und Ergebnisse der Fachtagung und stellt am Ende die Sender vor, die dort vertreten waren. Ein weiteres Ziel dieser Publikation besteht darin, allen Akteuren des Hochschulfernsehens, die nicht an der Tagung teilnehmen konnten, in das gemeinsame Projekt eines Dachverbands, der Markenbildung und Qualitätsverbesserung des deutschen Hochschulfernsehens einzubeziehen sowie die Diskussionsbeiträge auf den Podien zu dokumentieren.:Vorwort 2 Prof. Rüdiger Steinmetz, Charmaine Voigt Hochschulfernsehen - heute und morgen 6 Prof. Florian Mundhenke Medienregulierungen 16 Dr. Helmuth Neupert GEMA - Dialog 20 Marlene Heß Transkript Podiumsdiskussion 24 Hochschulfernsehen in Deutschland 56 Kristina Hasenheit Hochschulfernsehen – Chancen im Verbund 74 Charmaine Voigt Sender 79 Danksagung 84 Autoren 8

Land im Umbruch: Erfahrungen, Enttäuschungen, Erfolge im Spiegel sächsischer Lokalfernsehprogramme: (1990-1995)

In der Sattelzeit von 1990 bis 1995 nach dem Fall der Mauer kam es zu einem Zusammenprall der Kulturen West vs. Ost. Es war in Deutschland ein Aufeinandertreffen, bei dem die Macht einseitig verteilt war. Die etwa 40 sächsischen Lokalfernsehprogramme stellen – mit dem „Blick von unten“ auf die grundlegende Veränderung des Alltags im Osten – einzigartige historische Quellen für das kulturelle Gedächtnis eines der wichtigsten historischen Einschnitte im 20. Jahrhundert für ganz Deutschland dar: die Neue Große Transformation. Die Analyse der lokalen Fernsehprogramme als audio-visuelles Kulturgut und dessen heutige Wiederaufführung trägt zur Revision „vertrauter“ Darstellungen, Positionen und Beurteilungen dieser Sattelzeit bei und legt Wurzeln heutiger Probleme der Vereinigung frei. Mit dem Abstand von 30 Jahren können die drei Generationen der Zeitzeugen, der Wende-Kinder und der Nachwende-Geborenen besser verstehen, wie ihre Identität durch das historische Schlüsselereignis verändert bzw. geprägt wurde

Underway spectrophotometry in the Fram Strait (European Arctic Ocean): a highly resolved chlorophyll a data source for complementing satellite ocean color

Satellite remote sensing of chlorophyll a concentration (Chl-a) in the Arctic Ocean is spatially and temporally limited and needs to be supplemented and validated with substantial volumes of in situ observations. Here, we evaluated the capability of obtaining highly resolved in situ surface Chl-a using underway spectrophotometry operated during two summer cruises in 2015 and 2016 in the Fram Strait. Results showed that Chl-a measured using high pressure liquid chromatography (HPLC) was well related (R2 = 0.90) to the collocated particulate absorption line height at 676 nm obtained from the underway spectrophotometry system. This enabled continuous surface Chl-a estimation along the cruise tracks. When used to validate Chl-a operational products as well as to assess the Chl-a algorithms of the aqua moderate resolution imaging spectroradiometer (MODIS-A) and Sentinel-3 Ocean Land Color Imager (OLCI) Level 2 Chl-a operational products, and from OLCI Level 2 products processed with Polymer atmospheric correction algorithm (version 4.1), the underway spectrophotometry based Chl-a data sets proved to be a much more sufficient data source by generating over one order of magnitude more match-ups than those obtained from discrete water samples. Overall, the band ratio (OCI, OC4) Chl-a operational products from MODIS-A and OLCI as well as OLCI C2RCC products showed acceptable results. The OLCI Polymer standard output provided the most reliable Chl-a estimates, and nearly as good results were obtained from the OCI algorithm with Polymer atmospheric correction method. This work confirms the great advantage of the underway spectrophotometry in enlarging in situ Chl-a data sets for the Fram Strait and improving satellite Chl-a validation and Chl-a algorithm assessment over discrete water sample analysis in the laboratory

Spectral modelling of the "Super-Chandra" Type Ia SN 2009dc - testing a 2 M_sun white dwarf explosion model and alternatives

Extremely luminous, super-Chandrasekhar (SC) Type Ia Supernovae (SNe Ia) are as yet an unexplained phenomenon. We analyse a well-observed SN of this class, SN 2009dc, by modelling its photospheric spectra with a spectral synthesis code, using the technique of 'Abundance Tomography'. We present spectral models based on different density profiles, corresponding to different explosion scenarios, and discuss their consistency. First, we use a density structure of a simulated explosion of a 2 M_sun rotating C-O white dwarf (WD), which is often proposed as a possibility to explain SC SNe Ia. Then, we test a density profile empirically inferred from the evolution of line velocities (blueshifts). This model may be interpreted as a core-collapse SN with an ejecta mass ~ 3 M_sun. Finally, we calculate spectra assuming an interaction scenario. In such a scenario, SN 2009dc would be a standard WD explosion with a normal intrinsic luminosity, and this luminosity would be augmented by interaction of the ejecta with a H-/He-poor circumstellar medium. We find that no model tested easily explains SN 2009dc. With the 2 M_sun WD model, our abundance analysis predicts small amounts of burning products in the intermediate-/high-velocity ejecta (v > 9000 km/s). However, in the original explosion simulations, where the nuclear energy release per unit mass is large, burned material is present at high v. This contradiction can only be resolved if asymmetries strongly affect the radiative transfer or if C-O WDs with masses significantly above 2 M_sun exist. In a core-collapse scenario, low velocities of Fe-group elements are expected, but the abundance stratification in SN 2009dc seems 'SN Ia-like'. The interaction-based model looks promising, and we have some speculations on possible progenitor configurations. However, radiation-hydro simulations will be needed to judge whether this scenario is realistic at all.Comment: 22 pages, 12 figures, published in MNRAS. V2: several small corrections (typos, style