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The asymptotic representation for late times of the transient electric field above and on a uniform permeable and conducting ground is derived with the hitherto untreated effects of a ramp switch-off source current. The source is a vertically oriented finite loop placed on the ground. Certain response functions are defined and the results are compared directly to those of a Heaviside switch-off. The authors show that the ramp-time dependence is given by certain well-defined functions multiplying the respective terms of the series for the field produced by a Heaviside switch-off source. They also show that for late times t , the first term shows an enhancement of the ramp switch-off field relative to the Heaviside of the order of 1+5t 0/4t , where t 0 is the ramp time 相似文献
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Burstein Mark McDermott Drew Smith Douglas R. Westfold Stephen J. 《Autonomous Agents and Multi-Agent Systems》2003,6(3):265-286
Getting agents to communicate requires translating the data structures of the sender (the source representation) to the format required by the receiver (the target representation). Assuming that there is a formal theory of the semantics of the two formats, which explains both their meanings in terms of a neutral topic domain, we can cast the translation problem as solving higher-order functional equations. Some simple rules and strategies apparently suffice to solve these equations automatically. The strategies may be summarized as: decompose complex expressions, replacing topic-domain expressions with source-domain expressions when necessary. A crucial issue is getting the required formal theories of the source and target domains. We believe it is sufficient to find partial formalizations that grow as necessary. 相似文献
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