Comparison of turbulence measurements and simulations of the low-temperature plasma in the torsatron TJ-K

A toroidal low-temperature plasma is used for comparative turbulence studies. Measurements are carried out with Langmuir probe arrays in the entire plasma cross section. The data are closely compared with drift-Alfven turbulence simulations. Although the parameters in a low-temperature plasma are very different from those in fusion plasmas, the dimensionless parameters governing the drift-wave physics are comparable. Hence this study can also give insight into high-temperature plasma turbulence. In order to identify relevant characteristic signatures of different turbulence-driving mechanisms, simulations were carried out for a wide range of plasma parameters. The simulation results are compared with first measurements

Exploring the impact of data breaches and system malfunctions on users’ safety and privacy perceptions in the context of autonomous vehicles

Technological advancements allow for increasingly automated driving systems as well as the large-scale availability of fully autonomous vehicles (AVs) in the future. In this research-in-progress paper, we propose a research concept to further investigate the interplay of users’ perceived privacy risks and trust in AV safety associated with data breaches and system failures. Specifically, we aim to analyze whether system malfunctions impact privacy risk perceptions and whether data breaches impact users’ trust in AV safety by considering the trust in the AV manufacturer. Additionally, we offer first insights into preliminary data and explain our future research intentions. A more detailed understanding of the relationship between privacy and safety trust in the context of AVs could help manufacturers to better direct efforts to compensate for or prevent data breaches and system malfunctions potentially leading to increased user acceptance and technology adoption

LET\u27S GET PHYSIC(AI)L – TRANSFORMING AI-REQUIREMENTS OF HEALTHCARE INTO DESIGN PRINCIPLES

As healthcare\u27s digitization advances, artificial intelligence (AI) techniques offer opportunities to improve medical care. In addition to the much-discussed potential in diagnostics, AI-based systems can further support processes in clinics or comparable healthcare facilities, helping to improve medical, organizational, and administrative processes. Nevertheless, apart from single use-cases, AI in healthcare is still not unleashing its full potential. To empower the technology and provide a guideline for developers but also other entities such as medical institutions, we derive and plan to validate design principles guiding the design of AI-based systems specifically operating in clinics and healthcare facilities. In this research in progress study, we conduct the first two phases of the DSR approach by identifying requirements in literature and transforming these into design principles. By doing so, we provide a collection of literature-based design principles that need to be considered when implementing AI-based systems into healthcare contexts

Applications of Gait Analysis Data Compression for 3D Character Animation

We investigate a streamlined method for compression, approximation and fast interpolation of gait analysis data using Catmull-Rom Splines. We are interested not only in raw compression, but also extracting the most useful data from an animation for subsequent manipulation. Our method allows compression approaching 85 percent while the resulting animation remains indistinguishable by humans from the original animation, resulting in significant memory savings, while the untransformed compressed animation has possible usefulness in gait retargeting

Ethnocentrism, Racism, Genocide ...

As introduction, I shall examine some aspects of the background to this paper concerning the transition, as I see it, from ethnocentrism in the eigh-teenth century to genocide in the twentieth. When I came to reflect on the cultural construction of race, I posed some fairly obvious questions; How can one understand the concept (or 'idea', as Robert Miles in this volume has argued) of 'race' in the eighteenth cen-tury when European voyagers began 'discovering' different societies at an increasingly rapid rate? Is it the same as the term we use today? Or is it that we tend to conflate two things; ethnocentrism, which has been with us for centuries, and today's term 'race'? I came to the view that the least one could do was pay some attention to what has been written about race, how it emerged within twentieth-century context, especially as regards Natural History and the writings of voyagers and naturalists. To begin in this way means that conclusions other than those we are used to have to be enter-tained. We have to consider, for instance, the possibility that 'race' as it in-itially appeared in Western thought had nothing to do with the notion of race we understand today, even if many historians fail to recognise this.

FICTION and POLYPHONY

Before I come to explain what some of the consequences of fiction as polyphony are, let me say, by way of introduction, that our problem in a nutshell involves the symbolic and what we understand by this term. In particular, things in this regard could be said to turn around what is still, to my mind, a perennial problem in literary criticism, namely, an author's relationship to what he/she writes. Perhaps it is hardly necessary to repeat that, here, it is a question of life and death: the 'Death of the author' whose absence takes on a kind of 'presence' (= life) in the text - a 'resurrection accomplished in signs' , as Julia Kristeva has called it. (Kristeva, 1981;181) In a sense, therefore, those who used to maintain (and often still do- if only by implication) that a dash of psychology was sufficient to provide literary interpretation with illumination, may in fact have given us a clue as to how the literary critic might get onto the right track in this matter. For psychology, as our epigraph has it, 'is a knife that cuts both ways' (Dostoevsky, 1976;690); it oscillates between the notion of truth as referential and fiction (we will return to this point)

Microscopic structure of plasma turbulence in the torsatron TJ-K

Plasma turbulence is characterised by the fluctuation of density, potential and temperature on all temporal and spatial scales. In magnetically confined plasmas, turbulence causes an increased particle and heat transport across the magnetic field lines. The focus of this work is the experimental investigation of density and potential fluctuations and the resulting turbulent transport. A poloidal Langmuir probe array with 64 tips is employed to investigate turbulence in the confinement region at all spatial scales. A dependence on the drift scale rho_s is found. The cross phase between density and potential fluctuations is near zero, indicating drift wave turbulence. This result is also found in simulations. Finally, the conditional averaging method was used to detect the spatio-temporal structure of turbulent events with simple two probe measurements. The results are in agreement with the results from the probe array

Design of an Information System for Safety-Briefings along Planned Routes

Despite continuous improvements in road and vehicle safety, traffic accidents are still a threat to humans. Road safety even became a target of a sustainable development goal, presented by the United Nations (UN). Traffic-accidents often occur in certain areas. Thus, a briefing before driving a route could support drivers in knowing the dangerous spots and driving more careful and attentive at the dangerous areas. Following a design science research approach, we develop a theory how briefings for traffic related dangers should be designed and a web-application as an instance of the theory

Towards Design Principles for Experimental Simulations in Virtual Reality – Learning from Driving Simulators

Experiments play an important role in Information Systems research. In this area, Virtual Reality (VR) technologies can serve as a tool for enabling and conducting research. e.g., to investigate human behavior in specific situations. A prime example is VR-supported driving simulators that allow researchers in the automotive domain to gather knowledge while reducing cost and complexity compared to field studies with real cars. We argue that the use of carefully designed VR-supported experiments might allow researchers to get deeper insights into human behavior. Thus, we derive design principles for VR Experiments as an artifact from the literature about VR-supported driving simulations that have been accepted as a useful tool for research in their domain