Der Einsatz von Blockchain und Smart Contracts ermöglicht auch den Aufbau und Betrieb dezentraler autonomer Organisationen, sogenannter DAOs, die auf Grundlage eines zuvor fixierten Regelsystems automatisiert Entscheidungen treffen und an den Märkten als eigenständige Institution agieren können. Während DAOs in anderen Bereichen – in der Finanzwirtschaft und in der Creator-Economy – bereits regelmäßig zum Einsatz kommen, ist im industriellen Umfeld eine entsprechende Nutzbarmachung bislang kaum zu verzeichnen. Dabei bietet gerade die Vernetzung durch das „Internet der Dinge“ hierfür sinnvolle Anknüpfungspunkte. Der Beitrag befasst sich mit den möglichen wirtschaftlichen Adaptionsansätzen und lotet potenzielle Geschäftsmodelle aus, die sich aus der Errichtung von DAOs in der „Industrie 4.0“ ergeben könnten.

Die technisch rasant fortschreitende Entwicklung der Computergrafik in Kombination mit KI und Deep Learning ermöglicht immer realistischere Simulationen der Realität in der digitalen und virtuellen Sphäre. Auch die Darstellung von „virtuellen Wesen“ und digitalen Abbildern der Nutzer rücken dabei zunehmend in den Fokus – sowohl im spielerischen Alltag als auch im wirtschaftlichen Kontext. Dabei kursiert eine Vielzahl ähnlicher oder synonym verwendeter Begrifflichkeiten – Zeit für eine Abgrenzung.

Kaum eine Begrifflichkeit im Kontext des digitalen Marketings dürfte in jüngerer Zeit so viel Aufmerksamkeit erhalten haben, wie der Terminus des „Metaverse“. Das damit beschriebene Zusammenwachsen von virtueller und physischer Welt ermöglicht neue Geschäftsmodelle und – so glauben viele – wird die Bedingungen an den digitalen Märkten auf den Kopf stellen. Noch immer ist allerdings nicht klar, was genau unter diesem Buzzword nun eigentlich zu verstehen ist – was zur Folge hat, dass vielen der Themenkomplex noch als sehr abstrakt erscheint. Dabei sind viele der damit verbundenen Visionen bereits Realität. Dieser Beitrag versucht sich in einer „entmystifizierenden“ Begriffsbestimmung und -abgrenzung.

• CDR - Corporate Digital Responsibility - soll analog der CSR - Corporate Social Responsibility - die Verantwortung von Unternehmen bei der Digitalisierung betonen und entsprechende Strategien und Maßnahmen umfassen, die einen nachhaltigen und verantwortlichen Umgang mit digitalen Ressourcen bewirken. Damit stehen auch die negativen Nebeneffekte des Einsatzes von KI im Fokus, wie etwa der sogenannte "KI Bias", die Diskriminierung durch automatisierte Datenauswertungen. Der Kampf gegen diese Auswüchse stellt Forschung wie auch die Unternehmenspraxis vor erhebliche Herausforderungen. Der Beitrag beschreibt die allgemeinen Ziele für CDR wie auch die daraus abgeleiteten spezifischen Herausforderungen beim Umgang mit KI-Bias im Unternehmen.
• CDR - Corporate Digital Responsibility - is intended to emphasize the responsibility of companies in digitization in a manner analogous to CSR - Corporate Social Responsibility - and to encompass corresponding strategies and measures that bring about the sustainable and responsible use of digital resources. This also puts the focus on the negative side effects of the use of AI, such as the so-called "AI bias", the discrimination caused by algorithms and automatically processed data. Combating these excesses poses significant challenges to both research and corporate practice. The paper describes the general goals for CDR as well as the specific challenges deriving from these goals when dealing with AI bias in business environments.

• Wohl kaum eine andere Branche dürfte in den letzten Jahrzehnten ähnlichen Umwälzungen unterlegen haben wie die der Medien. Die digitale Transformation hat hier lang tradiertes auf den Kopf gestellt und völlig neue Formen von Wettbewerb auf den Märkten etabliert. Das stellt das Management vor große Herausforderungen und erhöht den Druck zur Innovation sowie gleichfalls die Relevanz, die „richtige“ Produktstrategie zu finden. Betrachtet man den Kanon der Strategieinstrumente und –theorien in der Betriebswirtschaft, fällt auf, dass sich diese Ansätze auf die der Produktgestaltung vorgelagerten Bereiche – wie die passende Marktwahl konzentrieren. Diesen Umstand wird hier das Konzept des „Geist-Seele-Körper“-Modells entgegengestellt, das sich gezielt der Findung und der späteren Managementevaluation von Produktstrategien, insbesondere im Medienumfeld widmet. Die drei Dimensionen von Körper, Geist und Seele sollen demnach zwar eine plausible Einheit bilden, betonen aber auch gleichzeitig die Optionen der unterschiedlichen Ausprägungen von möglichen Innovationen. Die Fixierung dieser Elemente bietet dabei nicht nur eine Veranschaulichung potenzieller Entwicklungslinien, sondern ermöglicht auch eine nachhaltige Steuerung im späteren Produktmanagement.
• Hardly any other industry has undergone such upheavals in recent decades as the media. The digital transformation disrupted long-standing traditions and established completely new forms of competition. This poses major challenges for management and increases the pressure to innovate as well as the relevance of finding the "right" product strategy. Looking at the canon of strategy tools and theories in business administration, it is noticeable that these approaches focus on the areas upstream of product design - such as the appropriate choice of markets. In contrast, the concept of the "mind-mind-body" model presented here attempts to address specifically the finding and subsequent management evaluation of product strategies, especially on media markets.. According to this model, the three dimensions of body, mind and soul are supposed to form a plausible unity, but at the same time emphasize the options of different manifestations of possible innovations. Documenting these elements not only provides an illustration of potential directions of development, but also enables sustainable control in subsequent product management

To optimally utilize Intel SGX, programs must be partitioned into trusted and untrusted parts. Writing the trusted part of a program with Intel’s SDK, however, requires manual effort that often becomes an obstacle for programmers. In this work, we investigate how compiler-level tooling can assist with the semi-automatic separation of code into a trusted and an untrusted partition. We present Cadote, a solution that generates SGX enclaves from programs written in Rust. Application developers are expected to mark functions as trusted, for which enclaves are then generated automatically. All other functions remain untrusted and are executed outside Intel SGX in the normal world. We implemented this concept using compiler optimization passes of the LLVM framework. Targeting Rust as input language allows us to benefit from high-level concepts, such as memory safety, which enable us to safely copy function parameters between the normal and trusted world in practice.

EEG classification is a promising approach to facilitate the life of handicapped people and to generate future human-computer-interfaces. In this paper we want to compare the effectiveness of current state of the art deep learning techniques for EEG classification. Therefore, we applied different approaches on various datasets and did a crosscomparison of the results in order to get more knowledge on the generalization capabilities. Additionally, we created a new EEG dataset and made it available for further research.

Human Factors in Hypertext 2022 (HUMAN'22) is the 5th workshop in this series. It is sponsored by ACM SIGWEB and is associated to the ACM Conference on Hypertext and Social Media 2022 (HT'22), which takes place between June 28th and July 1st in Barcelona, Spain as a hybrid event. HUMAN'22 takes place on June 28th—the conference's workshop day.

After two years of pandemic-caused virtual workshops, HUMAN'22 is organized as a hybrid event, which is in line with the organization of the main conference. We see this as a chance to allow in-presence meetings while providing remote participants the opportunity to get in touch by low registration costs and a reduced carbon footprint. Today's digital media enables us to communicate over distance or even attend larger meetings online and the Corona pandemic has taught us to use these tools in our daily life. This puts a special focus on the role of hypertext in our communication and information exchange demands, in particular from a human's perspective.

E-mail is nearly 50 years old and is still one of the most used communication protocols nowadays. However, it has no support for End-to-end encryption (E2EE) by default, which makes it inappropriate for sending sensitive information. This is why two e-mail encryption standards have been developed—namely, Secure/Multipurpose Internet Mail Extensions (S/MIME) and OpenPGP. Previous studies found that bad usability of encryption software can lead to software that is incorrectly used or not at all. Both consequences have a fatal impact on users’ security and privacy. In recent years, the number of e-mails that are read and written on mobile devices has increased drastically. In this paper, we conduct to the best of our knowledge, the first usability study of e-mail encryption apps on smartphones. We tested two mobile apps, one uses OpenPGP on Android and one uses S/MIME on iOS. In our usability study, we tested both apps with eleven participants and evaluated the usability with the System Usability Scale (SUS) and the Short Version of User Experience Questionnaire (UEQ-S). Our study shows that both apps have several usability issues which partly led to unencrypted e-mails and participants sending their passphrase instead of their public key.

Abstract. While modern-day static analysis tools are capable of finding standard vulnerabilities as well as complex patterns, implementing those tools is expensive regarding both development time and runtime performance. During the last years, domain specific languages like Datalog have gained popularity as they simplify the development process of analyses and rule sets dramatically. Similarly, intermediate representations like LLVM-IR are used to facilitate static source code analysis. In this paper, we present VANDALIR, a vulnerability analyzer and detector based on Datalog and LLVM-IR. VANDALIR is a static source code analyzer that allows to define and customize detection rules in a high-level, declarative way. We implement VANDALIR as a comprehensive static analysis tool, aiming to simplify vulnerability detection by a new combination of modern technologies. Besides the novel design of VANDALIR, we present a predefined detection rule set covering stack-based memory corruption, double free and format string vulnerabilities. As we show, our rule set achieves a detection rate of over 90% on test cases from the Juliet Test Suite, outperforming well-established vulnerability scanners such as the Clang Static Analyzer. Furthermore, we evaluated VANDALIR on open source projects and could reproduce existing vulnerabilities as well as identify previously unknown vulnerabilities.

In vielen Branchen gilt immer noch das Paradigma, dass es deutlich kostengünstiger sei, bestehende Kunden zu binden, als neue zu gewinnen. In diesem Kontext kommt einem zielgerichteten, analytischen Churn Management eine besondere Bedeutung zu. KI und Methoden des maschinellen Lernens scheinen dafür wie geschaffen.

Hypertext systems support users in navigating structured data sets and to find relevant information. Various interaction and visualization concepts aim to give users better insight into the data set, by suggesting queries and visualizing elements of interest in a meaningful way. Ranked lists are very common to show some sort of priority, while spatial layouts often help users to trace relations in the data. Only little research has been done in user studies that systematically show and reason about the differences of such spatial layouts and ranked lists. In this paper we report on a systematic comparison of a spatial visualization versus a ranked list layout. For this purpose, we did an between-subject study with 43 participants. One group performed a task with a system providing semantic visualization in 2D, the other group performed the same task with a ranked list. Both interfaces are very similar and only differ in how suggestions are visualized. The results show that users of the spatial layout finished their task in shorter time and have a tendency towards higher satisfaction. At the same time, they had more interactions with the system. Furthermore we discuss some in-depth data of the test sessions, which show that the visualization influences the users’ behavior.

In this paper, we report on a software demonstrator that utilizes a spatial hypertext UI to support knowledge management in the context of maintenance in industry. To demonstrate the flexibility of that approach, we re-use the software to visualize bibliographic data of the Hypertext conference series.

Associating information by means of linking it is a universal concept of human thinking, and by constructivist means, a possible way of learning through exploring and constructing individual information spaces related to a topic or cross topics. An application, facilitating and externalizing this activity by enabling users to create individual hyperlinks inside the environment of the Web, is a promising way to satisfy this exploratory use of information. The focus on an augmentative approach by lining hypertext's linking paradigm, in conjunction with the Web's vast amount of information, opens up for a broad spectrum of potential use scenarios. The possibilities reflect potential complexities concerning usability and limitations of usage. Therefore, preliminary and iterative evaluations are indispensable for meeting these challenges. We discuss a preliminary evaluation of usability and user behavior of said application by a conducted study based on cross-sectional quasi experimental design, using a controlled test scenario and collected client side data that serves as basis for interpretation on user behavior. Results indicate a strong habituation to document-centric processing and storing of information, and the tendency for transferring this behavior onto the more versatile linking mechanism introduced by the application. We argue for applying additional supportive features, specific for facilitating the reduction of complexity on user-side, and a longer testing period, in order to gain better insight into the possible overcome of habitual patterns concerning the tested use scenario.

This blue sky paper envisions a novel system which promotes emotional closeness through storytelling. Family members, who may be separated, collaboratively build a spatial hypertext of images and text fragments to express and structure their thoughts and memories. The system observes their reactions as well as their media while they work. Live recommendations prompt users in their thinking and storytelling. Family stories are thus collaboratively adapted to more tightly connect the thoughts and emotions of their loved ones.