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Träfflista för sökning "WFRF:(Jonsson Anders) ;mspu:(conferencepaper);srt2:(2000-2004)"

Sökning: WFRF:(Jonsson Anders) > Konferensbidrag > (2000-2004)

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  • Blom, Johan, et al. (författare)
  • Specifying and Generating Test Cases Using Observer Automata
  • 2004
  • Ingår i: Proceedings of the 4th International Workshop on Formal Approaches to Testing of Software. - Berlin, Heidelberg : Springer Berlin Heidelberg. ; , s. 125-139
  • Konferensbidrag (refereegranskat)
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  • Forsberg, Håkan, et al. (författare)
  • Radar signal processing using pipelined optical hypercube interconnects
  • 2001
  • Ingår i: Proceedings of the 15th International Parallel and Distributed Processing Symposium. - Los Alamitos, California : IEEE Computer Society Press. - 0769509908 ; , s. 2043-2052
  • Konferensbidrag (refereegranskat)abstract
    • In this paper, we consider the mapping of two radar algorithms on a new scalable hardware architecture. The architecture consists of several computational modules that work independently and send data simultaneously in order to achieve high throughput. Each computational module is composed of multiple processors connected in a hypercube topology to meet scalability and high bisection bandwidth requirements. Free-space optical interconnects and planar packaging technology make it possible to transform the hypercubes into planes. Optical fan-out reduces the number of optical transmitters and thus the hardware cost. Two example systems are analyzed and mapped onto the architecture. One 64-channel airborne radar system with a sustained computational load of more than 1.6 TFLOPS, and one ground-based 128-channel radar system with extreme inter-processor communication demands.
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  • Hoang, Hoai, et al. (författare)
  • Deadline first scheduling in switched real-time Ethernet - deadline partitioning issues and software implementation experiments
  • 2002
  • Ingår i: Euromicro RTS 2002. - Los Alamitos, Calif. : IEEE Computer Society. - 0769516653 - 9780769516653 - 076951667X - 9780769516677 ; , s. 68-71
  • Konferensbidrag (refereegranskat)abstract
    • This paper presents work on a switched Ethernet network extended to allow for earliest deadline first (EDF) scheduling. We show by example that asymmetric deadline partitioning between the links of a real-time channel can increase the utilization substantially, still not violating the real-time guarantees. We also report measurements on a software implementation of the switch on an ordinary PC.
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5.
  • Hoang, Hoai, et al. (författare)
  • Switched real-time Ethernet with earliest deadline first scheduling - protocols and traffic handling
  • 2002
  • Ingår i: Proceedings. - Los Alamitos, Calif. : IEEE Computer Society. - 0769515738 - 9780769515731 - 0769515746 - 9780769515748 - 0769515754 - 9780769515755 ; 5:1, s. 105-115
  • Konferensbidrag (refereegranskat)abstract
    • There is a strong interest of using the cheap and simple Ethernet technology for industrial and embedded systems. This far, however, the lack of real-time services has prevented this change of used network technology. This paper presents enhancements to full-duplex switched Ethernet for the ability of giving throughput and delay guarantees. The switch and the end-nodes controls the real-time traffic with Earliest Deadline First (EDF) scheduling on the frame level. No modification to the Ethernet standard is needed in the network that supports both real-time and non-real-time TCP/IP communication. The switch is responsible for admission control where feasibility analysis is made for each link between source and destination. The switch broadcasts Ethernet frames regularly to clock synchronize the end nodes and to implement flow control for non-real-time traffic.
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  • Jonsson, Malin, et al. (författare)
  • Animation of Water Droplet Flow on Structured Surfaces
  • 2002
  • Ingår i: Sigrad 2002. - 9173734640 ; , s. 17-22
  • Konferensbidrag (refereegranskat)abstract
    • Several methods for rendering and modeling water have been made and a few of them address the natural phenomenon of water droplets flow. As far as we know, none of those methods have used bump maps in order to simulate the flow of a droplet on structured surfaces. The normals of the bump map, that describes the geometry of the micro structured surface, are used in the flow computation of the droplets. As a result, the water droplets will meander down on the surface as if it has a micro structure. Existing models were not suitable for this purpose. Therefore, a new model is proposed in this paper. The droplet will also leave a trail, which is produced by changing the background texture on the surface. This method will not present a physically correct simulation of water droplets flow on a structured surface. However, it will produce a physically plausible real-time animation.
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