Hans Andersen

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Ethnography has gained considerable prominence as a technique for informing CSCW systems development of the nature of work. Experiences of ethnography reported to date have focused on the use of prolonged on-going enthnography to inform systems design. A considerable number of these studies have taken place within constrained and focused work domain. This(More)
Contemporary datacenters comprise hundreds or thousands of machines running applications requiring high availability and responsiveness. Although a performance crisis is easily detected by monitoring key end-to-end performance indicators (KPIs) such as response latency or request throughput, the variety of conditions that can lead to KPI degradation makes(More)
Neck pain is the cardinal symptom following whiplash injuries. The trauma mechanism could theoretically lead to both soft tissue and bone injury that could be visualised by means of MRI. From previous quite small trials it seems that MRI does not demonstrate significant tissue damage. Large prospectively followed cohorts are needed to identify possible(More)
We detail the design of autonomous golf cars which were used in public trials in Singapore's Chinese and Japanese Gardens, for the purpose of raising public awareness and gaining user acceptance of autonomous vehicles. The golf cars were designed to be robust, reliable, and safe, while operating under prolonged durations. Considerations that went in to the(More)
This paper proposes a direct adaptive fuzzy-model-based control algorithm. The controller is based on an inverse semi-linguistic fuzzy process model, identified and adapted via inputmatching technique. For the adaptation of the fuzzy model a general learning rule has been developed employing gradient-descent algorithm. The on-line learning ability of the(More)
We present the development of a full-scale “parallel autonomy” research platform including software and hardware. In the parallel autonomy paradigm, the control of the vehicle is shared; the human is still in control of the vehicle, but the autonomy system is always running in the background to prevent accidents. Our holistic approach(More)
Mobile manipulators are nowadays popular in various fields, including military missions, civil defense, rescue, and social services. Along with the wide use of such robots, the associated control problems require more and more attention to the nonlinearity and uncertainties of the dynamic models. In this paper, targeting the challenges of trajectory control(More)
This paper describes a method of conveying perception information from a self-driving golfcart to nearby pedestrians via a Light-Emitting Diode (LED) strip. By equipping autonomous vehicles (AVs) with this feature, their performance as social robots is improved by building trust and engagement with interacting pedestrians; typical pedestrian-driver(More)
Autonomous vehicles are expected to play a key role in the future of urban transportation systems, as they offer potential for additional safety, increased productivity, greater accessibility, better road efficiency, and positive impact on the environment. Research in autonomous systems has seen dramatic advances in recent years, due to the increases in(More)