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Short, transient radio-frequency interference (RFI) events could threaten the quality of astronomical observations made by new and planned radio telescopes such as MeerKAT, the SKA and HERA in the radio quiet reserve in South Africa. Because they are so short, often of the order of microseconds long, these events are difficult to detect and identify in the time-frequency plots typically produced by...
We presents a photonic crystal fibers (PCFs) structures with unique arrangement of air holes with variation in areas. The structure has shown its superiority in communication application. However the structure also has found its application in sensor. Besides this confinement loss and normalized frequency for the proposed structures has also been studied.
Multi-core Photonic crystal fibers (PCFs) has been investigated in this paper. The structure has core doped with ethanol. Anamolous dispersion behavior was observed for the first and second optical window. Moreover it has reported high birefringence. Moreover normalized frequency and loss for the designed PCFs has also been studied.
In this paper an unique design of photonic crystal fibers (PCFs) has been investigated which contains a predefined arrangements of circular and elliptical air holes. The structure has reported zero dispersion at first and second optical window. Moreover a high birefringence with low loss has also been reported. We also have studied the properties like normalized frequency for the designed fiber.
Cities typically face a wide gamut of management and maintenance problems. Existing automated sensor based solutions are prohibitively expensive to deploy. Furthermore, these solutions need to be complemented by incorporating human judgment for accurate, timely and cost-effective city-related event identification. To this end, this work proposes City Zen, which is a novel platform for event reporting...
Speech feature extraction is the most significant step in any Automatic speaker recognition system. In the last 60 years a lot of research has gone into parametric representation of these speech features. Several techniques are currently being used for Automatic Speaker Recognition. Yet Automatic Speaker Recognition still remains a confront mainly due to variations in speaker's vocal tract with time...
In most forensic cases handwritten documents are useful for person identification. It is not easy to identify a writer or narrow down a writer from a group of writings. Each person has his or her own individual handwriting styles. This paper presents an approach to extract unique features based on writers' writing styles from the handwritten Bangla scripts. The computed features are used to identify...
Now-a-days there has been growing interest in dual-pol systems, especially in hybrid-pol mode. In comparison to quad-pol system, the dual-pol system has the advantage of halved average transmitted power and double swath coverage. In this paper, we have discussed, in brief, the benefits of using hybrid-pol scheme. We also present comparisons of hybrid-pol and Quad-pol data based on the amount of information...
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