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In the emerging landscape of instrumented runway pavements, there exists a lack of in-situ data from airports in a tropical region. The Federal Aviation Administration, the Hawai'i Department of Transportation, and the University of Hawai'i Civil Engineering Department are working hard to bring an instrumented pavement management system to the Honolulu International Airport in the coming years. The...
The operational life of high power gyrotrons is adversely affected by peaks of heat dissipation density which exceed the capability of the cooling system. Such peaks cause adsorbed gases or vapors to be released, disrupting the operation of the gyrotron, and reducing its operational life.
An approach is presented for controlling the profile of heat dissipation density on the surface of collectors of a high power gyrotron. A 1 MW, 110 GHz gyrotron which has two depressed collectors, is used as a vehicle of study. A subsidiary coil has been added to the design configuration. It was found that for a particular number of ampere turns carried by it, all peaks of heat dissipation density...
Classifiers fail to handle high network traffic and changing node behaviors in efficient manner. Such applications require incremental learning algorithms with low computational complexity and low misclassification rate. This paper presents a model which partitions the training set into equivalence classes on the values of each feature. During classification, algorithm picks up one partial solution...
Gyrotron performance can be adversely affected by electrons backscattered from the collector and travelling back to the rf cavity and beyond. They can cause deposition of excessive heat in sensitive areas, and enter high field cavities, causing breakdown or instabilities. They can also become trapped, resulting in loss of mode purity. Avoiding such effects can enhance the reliability, usability and...
Distribution Transformer plays a crucial role in the power distribution network. Failure of distribution transformer results into interruption of power supply to consumers. This disruption affects the economy of nation in the form of loss of revenue, materials, repairing charges etc. Along with other causes, the main cause of failure of distribution transformers is prolonged overloading. In this paper...
Methods have been discussed for obtaining a desirable frequency spectrum of the modes of an interdigital resonator, so that it may be possible to get useful operation in more than one mode. The consequences of phase reversal at certain locations in the anode, in the case of nonzero order modes, have been analyzed, together with the effects of phase-shifting fingers. Experimental results have been...
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