Interactive Ray Tracing for Virtual TV Studio Applications

In the last years, the well known ray tracing algorithm gained new popularity with the introduction of interactive ray tracing methods. The high modularity and the ability to produce highly realistic images make ray tracing an attractive alternative to raster graphics hardware. Interactive ray tracing also proved its potential in the field of Mixed Reality rendering and provides novel methods for seamless integration of real and virtual content. Actor insertion methods, a subdomain of Mixed Reality and closely related to virtual television studio techniques, can use ray tracing for achieving high output quality in conjunction with appropriate visual cues like shadows and reflections at interactive frame rates. In this paper, we show how interactive ray tracing techniques can provide new ways of implementing virtual studio applications.

Literarisiertes Leben und gelebte Literatur - Interferenzen von Autobiographie, Briefkultur und galantem Roman um 1700

Der Beitrag untersucht Interferenzen von Literatur und Leben in höfischen Selbstzeugnissen um 1700. Am Beispiel einer autobiographischen Schlüsselerzählung von Aurora von Königsmarck wird zum einen gezeigt, wie die eigene Lebensgeschichte literarisch überformt in einer typischen galanten Erzählung dargeboten wird. An einem zweiten Beispiel, dem Briefwechsel zwischen Sophie Dorothea von Hannover und Graf Philipp von Königsmarck, lässt sich zum anderen erkennen, dass eben diese literarischen Muster aus dem Bereich der Galanterie wiederum Vorbilder für ganz reale Lebensentwürfe werden konnten. Der galante Diskurs um 1700 erweist sich als ein Diskurs, der der Verwischung der Grenzen zwischen Literatur und Leben Vorschub leistet. Dabei verstärken sich die selbstreflexiven Züge des frühneuzeitlichen Rollen-Ichs, was einerseits Handlungsspielräume neu eröffnet, andererseits von den Diskursteilnehmern eine komplexere Form von Fremd- und Selbstbeobachtung erfordert und sich deshalb als riskant erweist.

Neue Einblicke in die Praxis der frühen Wiedergutmachung in Bayern: Die Auerbach-Korrespondenz im Bayerischen Hauptstaatsarchiv und die Akten des Strafprozesses gegen die Führung des Landesentschädigungsamtes von 1952

Wie kaum ein anderer hat Philipp Auerbach die Anfänge der Wiedergutmachung in Westdeutschland nach 1945 geprägt. Durch seine zahlreichen Funktionen im Staatsdienst und in Organisationen ehemaliger Verfolgter gelang es ihm, 'Wiedergutmachung' an den Opfern des Nationalsozialismus in einem sehr weiten Sinn zu betreiben. Seine eigenwillige Vorstellung davon, wie Rückerstattung, Entschädigung, Entnazifizierung und öffentliches Gedenken miteinander verbunden werden sollten, trug ihm jedoch heftige Gegnerschaft ein. 1952 wurde er in einem hochpolitischen Prozess verurteilt und nahm sich unmittelbar danach das Leben. Auerbachs Korrespondenz und weitere persönliche Unterlagen aus den Jahren 1946-1951 sind jetzt im Bayerischen Hauptstaatsarchiv zugänglich. Ergänzend können seit kurzem im Staatsarchiv München die Verfahrensakten zum Strafprozess von 1952 eingesehen werden. Beide Archivalienkomplexe zusammen bieten ausgezeichnete Einblicke in die frühe Wiedergutmachungspraxis in Bayern. Sichtbar werden vor allem die vielfältigen Interessenkonflikte, die bei der Entschädigung, der Rückerstattung und der Sühne von NS-Verbrechen auftraten.

Google Images German Federal Court Entscheidung vom 29.04.2010, I ZR 69/08 With an English Introduction

The long-awaited verdict by the German Federal Court of Justice towards Google image search has drawn much attention to the problem of copyright infringement by search engines on the Internet. In the past years the question has arose whether the listing itself in a search engine like Google can be an infringement of copyright. The decision is widely seen as one of the most important of the last years. With significant amount of effort, the German Fede- ral Court tried to balance the interests of the right holders and those of the digital reality.

Sui Generis Rights for the Protection of Traditional Cultural Expressions Policy Implications

Within the international community there have been many calls for better protection of traditional cultural expressions (TCEs), for which classic instruments of intellectual property rights do not seem to fit. In response, at least five model laws have been advanced within the last 40 years. These are referred to as sui generis because, though they generally belong to the realm of intellectual property they structurally depart from classic copyright law to accommodate the needs of the holders of TCEs. The purpose of this paper is to provide a well-founded basis for national policy makers who wish to implement protection for TCEs within their country. This is achieved by systematically comparing and evaluating economic effects that can be expected to result from these regulatory alternatives and a related system or private ordering. Specifically, we compare if and how protection preferences of local communities are met as well as the social costs that are likely to arise from the different model laws.

Intestinal Tritrichomonas foetus infection in cats in Switzerland detected by in vitro cultivation and PCR

Tritrichomonas foetus, a parasite well known for its significance as venereally transmitted pathogen in cattle, has recently been identified as a cause of chronic large-bowel diarrhea in domestic cats in the US, UK, and, more recently, also in Norway. In a period of 3 months (October to December 2007), 45 cats of Switzerland suffering from chronic diarrhea were investigated for intestinal infections, including a search for trichomonads. A commercially available in vitro culture system was used to screen for infection, complemented with a PCR and subsequent amplicon sequencing to support speciation. The PCR is based upon amplification of a sequence derived from the internal transcribed spacer region 1 (ITS1) on the ribosomal RNA gene (rRNA) using primers designed to detect a broad range of genera and species belonging to the family of Trichomonadidae. The method was furthermore adapted to the uracil DNA glycosylase (UDG) system in order to prevent carry-over contamination and it included a recombinant internal control to track for inhibitory reactions. Eleven out of the 45 cats were culture-positive, as revealed by microscopic identification of trichomonadid organisms. One of the isolates was subjected to scanning electron microscopy and findings revealed the presence of three flagella, thus placing the isolate into the gender Tritrichomonas sp. PCR and subsequent amplicon sequencing were carried out with ten of the 11 isolates. A total homology with published T. foetus sequences was confirmed in all of the cases. T. foetus therefore appears to range among those organisms that can cause chronic diarrhea in cats in Switzerland.

Global Standards: Recent Developments betweend the Poles of Privacy and Cloud Computing

The development of the Internet has made it possible to transfer data ‘around the globe at the click of a mouse’. Especially fresh business models such as cloud computing, the newest driver to illustrate the speed and breadth of the online environment, allow this data to be processed across national borders on a routine basis. A number of factors cause the Internet to blur the lines between public and private space: Firstly, globalization and the outsourcing of economic actors entrain an ever-growing exchange of personal data. Secondly, the security pressure in the name of the legitimate fight against terrorism opens the access to a significant amount of data for an increasing number of public authorities.And finally,the tools of the digital society accompany everyone at each stage of life by leaving permanent individual and borderless traces in both space and time. Therefore, calls from both the public and private sectors for an international legal framework for privacy and data protection have become louder. Companies such as Google and Facebook have also come under continuous pressure from governments and citizens to reform the use of data. Thus, Google was not alone in calling for the creation of ‘global privacystandards’. Efforts are underway to review established privacy foundation documents. There are similar efforts to look at standards in global approaches to privacy and data protection. The last remarkable steps were the Montreux Declaration, in which the privacycommissioners appealed to the United Nations ‘to prepare a binding legal instrument which clearly sets out in detail the rights to data protection and privacy as enforceable human rights’. This appeal was repeated in 2008 at the 30thinternational conference held in Strasbourg, at the 31stconference 2009 in Madrid and in 2010 at the 32ndconference in Jerusalem. In a globalized world, free data flow has become an everyday need. Thus, the aim of global harmonization should be that it doesn’t make any difference for data users or data subjects whether data processing takes place in one or in several countries. Concern has been expressed that data users might seek to avoid privacy controls by moving their operations to countries which have lower standards in their privacy laws or no such laws at all. To control that risk, some countries have implemented special controls into their domestic law. Again, such controls may interfere with the need for free international data flow. A formula has to be found to make sure that privacy at the international level does not prejudice this principle.

Advantages and pitfalls in computer assisted orthopedic surgery planning using rapid-prototyped guides

Durch die von Rapid Prototyping gebotenen Möglichkeiten können computergestützte 3D Operationsplanungen präzise in der Operation umgesetzt werden. An der Universitätsklinik Balgrist wurden in den letzten 3 Jahren nahezu 100 Patienten erfolgreich behandelt, deren Operation in 3D geplant und mit patienten-spezifischen Schablonen umgesetzt wurde. Wir beschreiben die Genauigkeit dieser Methode und berichten über die hierbei gesammelten Erfahrungen. Aufgrund der Flexibilität der Rapid Prototyping Technologie, gibt es nicht immer nur einen Weg wie eine 3D geplante Operation umgesetzt werden kann. Wir zeigen daher anhand von Fallbeispielen unterschiedliche Strategien auf und beschreiben deren Vor- und Nachteile. Ausserdem präsentieren wir die Weiterentwicklung der Methode zur Anwendung an kleinerer Anatomie wie Knochen des Handgelenkes oder der Finger.

Use of EORTC Target Definition Guidelines for Dose-Intensified Salvage Radiation Therapy for Recurrent Prostate Cancer: Results of the Quality Assurance Program of the Randomized Trial SAKK 09/10

PURPOSE Different international target volume delineation guidelines exist and different treatment techniques are available for salvage radiation therapy (RT) for recurrent prostate cancer, but less is known regarding their respective applicability in clinical practice. METHODS AND MATERIALS A randomized phase III trial testing 64 Gy vs 70 Gy salvage RT was accompanied by an intense quality assurance program including a site-specific and study-specific questionnaire and a dummy run (DR). Target volume delineation was performed according to the European Organisation for the Research and Treatment of Cancer guidelines, and a DR-based treatment plan was established for 70 Gy. Major and minor protocol deviations were noted, interobserver agreement of delineated target contours was assessed, and dose-volume histogram (DVH) parameters of different treatment techniques were compared. RESULTS Thirty European centers participated, 43% of which were using 3-dimensional conformal RT (3D-CRT), with the remaining centers using intensity modulated RT (IMRT) or volumetric modulated arc technique (VMAT). The first submitted version of the DR contained major deviations in 21 of 30 (70%) centers, mostly caused by inappropriately defined or lack of prostate bed (PB). All but 5 centers completed the DR successfully with their second submitted version. The interobserver agreement of the PB was moderate and was improved by the DR review, as indicated by an increased κ value (0.59 vs 0.55), mean sensitivity (0.64 vs 0.58), volume of total agreement (3.9 vs 3.3 cm(3)), and decrease in the union volume (79.3 vs 84.2 cm(3)). Rectal and bladder wall DVH parameters of IMRT and VMAT vs 3D-CRT plans were not significantly different. CONCLUSIONS The interobserver agreement of PB delineation was moderate but was improved by the DR. Major deviations could be identified for the majority of centers. The DR has improved the acquaintance of the participating centers with the trial protocol.