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Manjula, S.
- Channel Equalisation of BPSK and QPSK Signal Using Higher Order Neural Networks
Authors
1 Electrical and Electronics Engineering Department, Anna University of Technology Tirunelveli, Tirunelveli, 627007, IN
2 Electronics and Communication Engineering Department, Anna University of Technology Tirunelveli, Tirunelveli, IN
Source
Automation and Autonomous Systems, Vol 3, No 6 (2011), Pagination: 272-277Abstract
A high order feed forward neural network architecture like Multiplicative Neural Network (MNN), Sigma-Pi Network (SPN) and Improved Sigma-Pi Network (ISPN) are used for adaptive channel equalization in this paper. The replacement of summation by multiplication at the neuron results in more powerful mapping because of its capability of processing higher-order information from training data. The equalizer is tested on Rayleigh fading channel with BPSK and QPSK signals. Performance comparison with back propagation (BPN) neural network shows that the proposed equalizer provides compact architecture and satisfactory results in terms of bit error rate performance at various levels of energy per power spectral density ratios for a Rayleigh fading channel, and also in terms of learning rate and training time.Keywords
Channel Equalization, MNN, SPN, ISPN, BPN, Rayleigh Fading Channel.
- Assessing Functional Status of Old Age Home Residents
Authors
1 Sacred Heart Nursing College, Madurai, IN
Source
International Journal of Nursing Education and Research, Vol 2, No 2 (2014), Pagination: 164-165Abstract
Ageing is a natural process. It refers to a multidimensional process of physical, psychological and social changes. The present study was conducted in two old age homes in Madurai, Tamilnadu to assess the functional status of elderly both quantitatively and qualitatively. The non-experimental research approach of univariate descriptive design was adopted for the study. Using convenient sampling technique a total of 50 elderly who fulfilled the inclusion criteria were selected. The tool used for the study was COOP chart for adult primary care practice. The data collected by interview method was analyzed in descriptive statistics.
Results:38% of them were able to perform only light activities.50% of the elderly had some difficulty to perform their daily activities.46% of them stated their overall health was good.36% of them received quite a bit of support in the old age home.
Keywords
Functional Status, Qualitative Analysis, Old Age Home, Quality of Life, Ageing.- Design and Optimization of Ultra Low Power Low Noise Amplifier using Particle Swarm Optimization
Authors
1 Mepco Schlenk Engineering College, Sivakasi - 626005, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 8, No 36 (2015), Pagination:Abstract
In this paper, an Inductively Degenerated Cascode Low Noise Amplifier (IDCLNA) is designed using TSMC 0.13 m RF CMOS technology. For improving the performances of LNA, modifications are done in conventional IDCLNA. They are i) Forward body bias (FBB) technique is applied to reduce the supply voltage ii) The inductor is added between main and cascode transistors for increasing the gain iii) To reduce the noise factor of cascode stage, an inductor is inserted at the gate of cascode stage iv) For improving the stability factor, the modified resistive and capacitive shunt feedback is used. The proposed LNA produces 10.7 dB voltage gain, 3.27 dB noise figure, -9.1 dBm IIP3 and 957 μW power consumption. For optimizing the design parameters of proposed LNA, the popular optimization technique like Particle Swarm Optimization (PSO) algorithm is used to improve the performance measures. The optimized LNA achieves 12.6 dB voltage gain, 3.19 dB noise figure and consumes 869 μW power. The optimized results produce the good Figure of Merit (FOM) of 6.6.Keywords
Figure of Merit, LNA, Power Consumption and PSO.Full Text
- Expressive Therapy for Geriatrics
Authors
1 Sacred Heart Nursing College, Madurai, IN
Source
International Journal of Advances in Nursing Management, Vol 2, No 1 (2014), Pagination: 31-33Abstract
Long life is a sign of good health. The ageing of the world's population-in developing and developed countries - is an indicator of improving global health. The aging process will affect the old age people physically, psychologically, socially, spiritually. As ageing progress, aged people become less active in physically as well as mentally. From the literature review it is quite evident that expressive therapies are beneficial to improve psychosocial and physiological well being and quality of life of elderly. For elders, using art to communicate, full of wonderful materials and structures that bring surprise and satisfaction. Nurses can play a pivotal role in improving their well being.Keywords
Expressive Therapy - Well Being - Quality of Life - Nurses Role - Geriatrics.- Synthesis and Pharmacological Screening of Some New Benzimidazole Derivatives
Authors
1 Tallapadmavathi College of Pharmacy, Urus, Kareemabad, Warangal, A.P, IN
2 Trinity College of Pharmaceutical Sciences, Peddapalli, Karimnagar, A.P, IN
3 Balaji Institute of Pharmaceutical Sciences, Narsampet, Warangal, A.P, IN
Source
Asian Journal of Research in Chemistry, Vol 4, No 1 (2011), Pagination: 147-150Abstract
Seven different 2-[(1H-benzimidazol-2yl methyl) sulfanyl)] –N4-(phenylmethylidene) acetohydrazides were synthesized from 2-[(1H- benzimidazol-2-yl methyl) sulfanyl] acetohydrazide on reaction with different aromatic aldehydes in methanol. Each of these compounds were purified and characterized by their spectral data. All the compounds were assayed for their anti-inflammatory activity by carrageenan induced rat hind paw edema method. Some of these compounds showed moderate to considerable anti-inflammatory activity.