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Flavio S. Correa da Silv Marcelo K. Zuffo Paul W. H. Chung Petros Papapanagiotou David Robertson 《民用飞机设计与研究》2017,(3):105
Hazard prevention in mission plans requires careful analysis and appropriate tools to support the design of preventive and/or corrective measures. It is most challenging in systems with large sets of states and complex state relations. In the case of sociotechnical systems, hazard prevention becomes even more dicult given that the behaviour of human centric components can at best be partially predictable. In the present article we focus on a specic class of sociotechnical systems namely air spaces containing pilot controlled as well as autonomous aircrafts and introduce the notion of relevant hazards. We also introduce soft institutions as an appropriate basis for analysis, with the aim of addressing relevant hazards. The concept of soft institutions is drawn from specication languages for interaction between agents in multi agent systems but, in our case, is adapted for use in systems that combine human and automated actors. 相似文献
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Heckman D. Williams J. Robertson W. Emond A. 《IEEE transactions on aerospace and electronic systems》1974,(4):458-470
Shock waves originating from hypersonic projectiles flown in ballistic ranges and subsequently reflected from the range walls have been found to produce undesirable effects on the measurements of projectile wakes. This paper reports on the mechanisms through which reflected shock waves perturb the wake, the design, and installation of full-scale fiberglas wedge shock attenuation treatments, the design of equipment for minimum shock reflection, and the results of measurements of the performance of the treatment. 相似文献
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A simple model has been developed that demonstrates that heliospheric X-ray emission can account for about 25%–50% of observed
soft X-ray background intensities. Similar to cometary soft X-ray emission, these X-rays are thought to be produced in the
heliosphere due to charge transfer collisions between heavy solar wind ions and interstellar neutrals. A more complex model
has now been developed to take into account temporal and spatial variations of the solar wind and interstellar neutrals. Measured
time histories of the solar wind proton flux are used in the model and the results are compared with the ‘long-term enhancements’
in the soft X-ray background measured by ROSAT for the same time period.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献