Publications

In travelling wave distributed photodetectors, half the photocurrent generated in each individual photodiode is lost in the input termination.

Optical isolators, which allow light to pass in one direction but block light in the opposite direction, are one essential element in a laser or an optical amplifier system to protect the system fr

Two medium power travelling-wave tubes to give power outputs of 8 W and 12 W respectively at frequencies around 6Gc/s are described.

A single molecule break junction device serves as a tunable model system for probing the many body Kondo state.

In this article we describe a very simple means of treating microscopic fluctuations in noise theory.

We prove that tree isomorphism is not expressible in the language ( FO + TC + COUNT).

We study relations on trees defined by first-order constraints over a vocabulary that includes the tree extension relation T

In this paper, we provide the first systematic study of subscription aggregation where subscriptions are specific with tree patterns (an important subclass of XPath expressions).

In this paper, we study the novel problem of subscription aggregation, where the subscriptions are specified with tree patterns which are a uesful subclass of XPath expressions.

Tree-based models provide an alternative to linear and additive models for regression and classification data.