Gabriele von Voigt

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Currently generic executable programs can only be encrypted during transmission and storage. To execute the program itself and the data it operates on must be decrypted. If the execution system is not trusted or compromised, both the program code and data are endangered. Recent advances in homomorphic cryptography show how additions and multiplications can(More)
The paper specifies a novel coder/decoder that compresses sequences of 3D texture data to support the haptic rendering of animated volumes. Lossy compression gives 25% of the original size. Lossy compression and clipping gives 3% but requires the renderer to query for new data when the point of contact moves. We evaluated the codec by means of rendering(More)
Natural scientists such as physicists pioneered the sharing of computing resources, which resulted in the Grid. The inter domain transfer process of this technology has been an intuitive process. Some difficulties facing the life science community can be understood using the Bozeman's "Effectiveness Model of Technology Transfer". Bozeman's and classical(More)
The paper specifies modular software for synchronous and asynchronous computer-mediated communication and visualization in network-distributed environments. It is new because the distribution of the visualization pipeline is not prescribed, compared to other systems, and supports time-deferred collaboration and presentation by means of recordable sessions(More)
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