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| Articles
by
R. Radha |
Total Records (
3 ) for
R. Radha |
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R. Radha
and
S.P. Rajagopalan
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Fuzzy logic is a computational paradigm that provides a mathematical tool for dealing with the uncertainty and the imprecision typical of human reasoning. A prime characteristic of fuzzy logic is its capability of expressing knowledge in a linguistic way, allowing a system to be described by simple, human-friendly rules. The fuzzy set framework has been utilized in several different approaches to modeling the diagnostic process. In this paper Diabetes related diseases and their symptoms are taken. The physician’s medical knowledge is represented as a fuzzy relation between symptoms and diseases. Thus, given the fuzzy set A of the symptoms observed in the patient and the fuzzy relation R representing the medical knowledge that relates the symptoms in set S to the diseases in set D, then the fuzzy set B of the possible diseases of the patient can be inferred by means of the compositional rule of inference. Fuzzy membership values for representing different symptoms are framed and they are used for forming the relations. |
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R. Radha
,
S. Jayalakshmi
and
S.P. Rajagopalan
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In this study we show that the gene-expression
profiles based on microarray analysis can be used to predict the genes
which are responsible for death of the patient in early-stage B-cell Lymphoma.
This study presents a new computational method for this prediction and
use an informative subset of samples to identify genes whose expression
is related to the problem under study. A reduction technique integrating
global normalization, fuzzy membership generation, Pearson`s correlation
method are used to identify genes which are related to non survival. The
early identification of the genes causing B-cell Lymphoma that leads to
death will benefit patients in the sense that the patients can be provided
proper therapy to increase their life span. The validity of the results
are established with the help of statistical methods. |
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Sundararaman Rajagopalan
,
K. Pravallika
,
R. Radha
,
Har Narayan Upadhyay
,
J.B.B. Rayappan
and
Rengarajan Amirtharajan
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The inventions and innovations in the multimedia communication
have revolutionized the infotainment world. With the advancements in multimedia
, there is a growing demand to use the image, audio, video and text ingredients
for information protection. In the field of steganography, the cover to carry
over the secret information has been an image in many of the reported works
due to high payload carrying capacity. However audio steganography on hardware
platform provides the user an option to use multicarrier steganography on common
chip. Here we propose a method of steganography which has been implemented on
Cyclone II FPGA EP2C20F484C7 which houses an architecture with LSB substitution
of Huffman encoded secret message on select parts of digitized audio signal.
The experimental results show that a SNR of 127.7 dB has been obtained for 100
bits payload with embedding process done on every 2000th memory location of
16-bit digitized audio signal stored in External SRAM. |
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