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Publication RDS: FPGA Routing Delay Sensors for Effective Remote Power Analysis Attacks(Universitatsbibliothek der Ruhr-Universitat Bochum, 2023-03-06)State-of-the-art sensors for measuring FPGA voltage fluctuations are timeto-digital converters (TDCs). They allow detecting voltage fluctuations in the order of a few nanoseconds. The key building component of a TDC is a delay line, typically implemented as a chain of fast carry propagation multiplexers. In FPGAs, the fast carry chains are constrained to dedicated logic and routing, and need to be routed strictly vertically. In this work, we present an alternative approach to designing on-chip voltage sensors, in which the FPGA routing resources replace the carry logic. We present three variants of what we name a routing delay sensor (RDS): one vertically constrained, one horizontally constrained, and one free of any constraints. We perform a thorough experimental evaluation on both the Sakura-X side-channel evaluation board and the Alveo U200 datacenter card, to evaluate the performance of the RDS sensors in the context of a remote power side-channel analysis attack. The results show that our best RDS implementation in most cases outperforms the TDC. On average, for breaking the full 128-bit key of an AES-128 cryptographic core, an adversary requires 35% fewer side-channel traces when using the RDS than when using the TDC. Besides making the attack more effective, given the absence of the placement and routing constraint, the RDS sensor is also easier to deploy. - Some of the metrics are blocked by yourconsent settings
Publication Steven W. Floyd: His legacy as a scholar and academic community builder(SAGE Publications, 2025-02-17)Type:Journal: - Some of the metrics are blocked by yourconsent settings
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Publication SpeculAR: An In-the-wild Exploration of Users’ Perceptions of a Social Augmented Reality(ACM, 2025-04)While head-mounted augmented reality (AR) glasses are becoming increasingly reliable and relevant for public scenarios, little is known about users’ preferences and perceptions when experiencing AR in social spaces. In this late-breaking work, we investigate users’ perceptions of augmented social environments tailored to their shared interests. Through interviews with 64 participants, we first identified 12 key usage scenarios, which informed the development of SpeculAR, a prototype for an augmented social reality. We then conducted an in-the-wild study with 18 participants to assess their experiences with SpeculAR. Our findings reveal that shared AR scenarios are generally perceived positively and can be seamlessly integrated into real-world environments to augment and further enhance real-world spaces. Our exploration of augmented social spaces highlights important considerations and lays the groundwork for future studies and the realizations of augmented reality applications in everyday lives.
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Publication Logistikmarktstudie Schweiz 02-2024: Trends, Nachhaltigkeit, Geopolitische Krisen, Automatisierung(GS1 Switzerland, 2024-07-01)The second issue of the Swiss Logistics Market Study in 2024 focuses on trends, sustainability, geopolitical crises and automation in the Swiss logistics market. The trend radar illustrates the current technological, social and economic trends in the Swiss logistics market and their dynamics. The focus of the analysis of developments in the freight transport market is on determining the sustainability of logistics. In addition, mode-specific developments in road, rail, air and shipping are examined in order to describe the current market situation. Besides the recurring static topics, the issue includes two dynamic topics, geopolitical crises and automation: the complexity along global trade routes is constantly increasing due to global crises. Established flows of goods have had to be adapted within a very short space of time, which is now leading to new challenges. Delays and cost increases in supply chains are the logical consequence. In this issue, we also explore the question of how much digitalisation actually makes sense. Could Switzerland be described as an Eldorado for automation in warehouse logistics? Issue 02-2024 of the Swiss Logistics Market Study provides answers to these and further questions. - Some of the metrics are blocked by yourconsent settings
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Publication Organizational unlearning as a process: What we know, what we don’t know, what we should know(2024-04-23)Although the field of organizational unlearning has recently gained increased interest, its conceptual foundations and raison d’être are still debated. In this review, we aim to revisit various discourses and arguments to advance the understanding of organizational unlearning in management and organization studies. Using an integrative literature review approach with systematic elements, we examine the existing body of research on organizational unlearning. We review the literature from different perspectives, focusing on a process-based understanding in terms of why and how organizations intentionally discard knowledge. Based on our review, we develop an integrative framework that portrays organizational unlearning as a dynamically unfolding process over time. We propose implications and offer research directions that will allow future researchers to develop a more profound understanding of the concept. - Some of the metrics are blocked by yourconsent settings
Publication “Ouch, that speed hurts”: How cost algorithms in modern autopilots change the aesthetics of flying airplanes(2024-12-18)In this paper, we draw attention to the so far largely ignored roles of cost saving software in transport and mobility systems. Based on an in-depth qualitative study of modern flying, we examine the ways in which cost-saving algorithms are increasingly used to bypass human operators and to make complex technological architectures work more efficiently. The case will study the implications of this ‘invisibilization’ of cost management by two types of cost management algorithms that are nowadays an integral part of airplanes’ autopilot: the cost index (CI) and take-off performance calculation (TOP). The study highlights how airlines, over time, have shifted from encouraging pilots to perform manual cost management towards letting the aircraft ‘think’ itself about what makes the flight most cost-efficient. We outline how this shift from explicitly fostering pilots’ cost sensibility towards implanting a cost-saving rationale into an airplane’s technological ‘brain’ fundamentally redefines the ways in which pilots see themselves, how they handle their instruments, what excites them about flying, and how they cope with non-routine situations. We show the unique ways in which such cost-saving algorithms in transport systems infuse us with cost-saving rationales.