• Der Begriff des „Metaverse“ umschreibt das Zusammenwachsen von virtueller und physischer Welt. Die dahinterstehende technische Entwicklung führt zu einer Veränderung der Marktbedingungen und soll neue Geschäftsmodelle ermöglichen – auch im Bereich der Festivalökonomie. Der Text widmet sich den Chancen und Herausforderungen die das Metaverse der Veranstaltungs- und Musikbranche und dabei insbesondere dem Metal-Segment sowie den einschlägigen Festivals im Metaversum eröffnet. Der Beitrag nähert sich dem Thema konzeptionell, auf Basis einer ethnographischen Analyse von Use Cases, deren Übertragbarkeit auf diesen Kontext untersucht wird. Dabei zeigt sich, dass die Inszenierung von Live-Musik im Bereich des Metals im virtuellen Raum aktuell nur mit Einbußen des Festivalflairs und des Erlebnischarakters möglich ist, jedenfalls dann, wenn herkömmliche „physische“ Festival-Erfahrungen als Maßstab herangezogen werden. Potenziale ergeben sich jedoch durch den Vertrieb virtueller Güter und die Nutzbarmachung digitaler Services als Verlängerung der Vermarktungswertkette von Konzertevents. Insgesamt bedarf es einer medienadäquaten Inszenierung und des angemessenen Rückgriffs auf einschlägige Instrumente der virtuellen Sphäre um in diesem Kontext erfolgreich zu sein.…
• The term "metaverse" describes the merging of the virtual and physical world. The underlying technical development leads to a change in market conditions and should enable new business models - also in the area of the festival economy. The text is dedicated to the opportunities and challenges that the metaverse opens up for the event and music industry, especially for the metal segment and respective festivals. The article approaches the topic conceptually, on the basis of an ethnographic analysis of use cases, whose transferability to this context is examined. It is shown that the staging of live music in the field of metal in virtual space is currently only possible with a loss of festival flair and entertainment quality, at least if conventional "physical" festival experiences are taken as yardstick. However, there is potential in the distribution of virtual goods and the utilisation of digital services as an extension of the value chain of concert events and festivals. All in all, a media-adequate staging and the appropriate use of relevant instruments of the virtual sphere are needed to be successful in this context.

Auch wenn bei Meta die Einführung holprig erscheint und Microsoft und andere Firmen ihre Strategien auf den Prüfstand stellen: Das viel diskutierte Metaverse ist schon da – jedenfalls in einzelnen Bereichen, wie etwa bei Events, Messen und Kundenveranstaltungen. Welche Ansätze gibt es? Was ist Erfolg versprechend?

The usage of e-learning platforms, online lectures and online meetings for academic teaching increased during the Covid-19 pandemic. Lecturers created video lectures, screencasts, or audio podcasts for online learning. The Hochschul-Assistenz-System (HAnS) is a learning experience platform that uses machine learning (ML) methods to support students and lecturers in the online learning and teaching processes. HAnS is being developed in multiple iterations as an agile open-source collaborative project supported by multiple universities and partners. This paper presents the current state of the development of HAnS on German video lectures.

E-mail phishing attacks are still the number one gateway for attackers. Even when the patch level of a network is up to date, if one employee clicks on a link in a phishing e-mail and enters their credentials on a malicious website or downloads malware, the whole organization might get compromised. Anti-phishing support systems highlight different aspects of an e-mail to help users to detect phishing e-mails. However, little is known about their effectiveness, especially in comparison to each other. This paper presents our experimental design to investigate the efficacy of various support systems. For this purpose, we created a fictional scenario and an interactive tool to display e-mails. In addition, we present our preliminary study with the first results to classify test e-mails in different difficulty levels that serve as a basis for our main study.

Linear low-density polyethylene (LLDPE) crosslinks under irradiation in the range of up to 250 kGy. Crosslinking leads to better chemical and thermal resistance but causes reduction in mechanical performance. To counter this reduction, compounds of LLDPE with thermoplastic elastomers (TPV) were made. Specimens were irradiated with doses reaching from 99 to 231 kGy. Gel content shows a decrease of around 12% for compounds with 20 wt% of TPV compared to pure LLDPE. It is also found that compounds containing 10 wt% TPV experience a 4% higher gel content than predicted. For higher amounts of TPV elongation at break increases from 689% for pure LLDPE to 769% and tensile strength decreases from 31.9 to 30.5 MPa. Under irradiation, a trend to lower elongations and tensile strengths is observed. Elongation at break decreased around 200% and tensile strength around 5 MPa under irradiation. Thermal analysis of TPV showed that while the melting temperature decreases, its crystallinity first rises for doses up to 165 kGy before decreasing. Infrared spectroscopy was used to identify changes in the chemical structure, where evidence of surface oxidation under irradiation is found for all compounds with LLDPE.

Tor is a popular privacy-enhancing technology that allows anonymous communication using onion routing. However, such technologies are only helpful if used; therefore, performance is an important aspect. One of the main performance bottlenecks of Tor is the cross-circuit interference (CCI) problem. Tor multiplexes multiple circuits over a single Transport Layer Security (TLS) 1.2 connection if they share a path segment (link). Therefore, they have the same congestion window, which can yield unfair bandwidth allocation. However, there has been little work in understanding this problem in more depth.

This paper investigates the number of simultaneously shared links in the current Tor network, which are the root cause of CCI. We developed a novel shared links simulator called SALSA to investigate this problem. Our results show that 3.7 % of active links are shared, and the involving Onion Routers (ORs) have the most common bandwidth capabilities. Additionally, we show that the internal circuits and exit policy influence the CCI problem. Furthermore, we model the number of shared links when the demand grows further and show that the number of shared links can go up to 16 %. Finally, we run Shadow simulations with a 25 % downscaled Tor network and show that a network without shared links is faster.

Datenteilen im Bauprozess in Common Data Environments (CDE) ist bisher durch die DIN EN ISO 19650 erfasst, die keine expliziten Vorgaben zur rechtlichen Organisation der technischen Infrastruktur macht, sondern eher auf die Prozesse abhebt. Dies ändert sich mit der Verab-schiedung des europäischen Data Governance Act (DGA) am 30.05.2022, der als direkt wirkende Verordnung die gesetzliche Trennung des Anbietens von Daten und Services vorsieht. Be-stehende Geschäftsmodelle zum Datenteilen in der Baubran-che sind auf ihre Rechtskonformität zu überprüfen und ggf. an-zupassen. Der Beitrag will zeigen, wie das Datenteilen nach Erlass des DGA in einem CDE im Bauprozess rechtskonform möglich sein kann und nimmt dabei insbesondere auf das Tei-len von Daten im Rahmen der BIM-basierten Planung Bezug