Channel Estimation for MIMO MC-CDMA Systems

The concepts of MIMO MC-CDMA are not new but the new technologies to improve their functioning are an emerging area of research. In general, most mobile communication systems transmit bits of information in the radio space to the receiver. The radio channels in mobile radio systems are usually multipath fading channels, which cause inter-symbol interference (ISI) in the received signal. To remove ISI from the signal, there is a need of strong equalizer. In this thesis we have focused on simulating the MIMO MC-CDMA systems in MATLAB and designed the channel estimation for them

SCREENING OF COMMON SIDDHA FORMULATIONS FOR ANTIMICROBIAL ACTIVITY AGAINST RESPIRATORY PATHOGENS

ABSTRACTObjective: The objective of this study was to screen the antimicrobial potential and minimal inhibitory concentrations (MICs) of selected commonlyused Siddha formulations against respiratory pathogens.Methods: The most frequently and clinically used Siddha formulations for respiratory infections, namely Gowri chinthamani (R1), Sivanar amirtham(R2), Poorana chandrodayam (R3), Thalaga parpam (R4), Pavala parpam (R5), and Vasantha kusumasura mathirai (R6) were screened for antimicrobialactivity against microbial type culture collection strains of Neisseria mucosa, Klebsiella pneumonia, Streptococcus pneumonia, Staphylococcus aureus,Pseudomonas aeruginosa, and Aspergillus niger, respectively, by agar well diffusion method. Tetracycline and fluconozole were used as positive controlfor bacterial and fungal pathogens, respectively. The zone of inhibition and the MICs were determined.Results: Among these formulations, Sivanar amirtham (R2) and Pavala parpam (R5) showed microbial sensitivity against all the above testedrespiratory pathogens. The drug Sivanar amirtham (R2) showed higher zone of inhibition when compared to the control tetracycline.Conclusion: The study, therefore, supports the clinical claims of Siddha formulations to have potent antimicrobial activity and offer profoundtherapeutic benefits in respiratory infections.Keywords: Siddha, Sivanaramirtham, Pavala parpam, Antibacterial activity, Antifungal activity, Respiratory infections

A modification of Adomian's solution for nonlinear oscillatory systems

AbstractIn this paper, we consider nonlinear oscillatory equations of the form d2udt2 + ϖ2u = εf(u, dudt), whose solutions can be obtained by the decomposition method. But these solutions do not exhibit periodicity, which is characteristic of oscillatory systems. We use an alternative technique by which the solution obtained by the decomposition method is made periodic. The method is described and illustrated with examples. There is no smallness assumption on the parameter ε occuring in the equation

ANTIMICROBIAL ACTIVITY OF NATURAL CHLOROPHYLLIN FROM ENDANGERED MEDICINAL PLANT MIMOSA PUDICA L.

Objective: Chlorophyllin (CHL) belongs to a group of compounds, porphyrins that contain a chelated metal ion in the center of the molecule. The objective of this present study was to extract the Chlorophyllin from Mimosa pudica and to study its antimicrobial activity.Methods: The antimicrobial activity of chlorophyllin from the leaf extract of Mimosa pudica L., was determined in vitro, using well diffusion method against human pathogenic bacteria and fungi, viz., two Gram-negative bacteria: Pseudomonas aeruginosa and Escherichia coli, and two Gram-positive bacteria: Staphylococcus aureus and Klebsiella pneomoniae, and one fungal pathogen, Candida albicans.Results: Chlorophyllin from the leaf extract of Mimosa pudica recorded potential antimicrobial activity against the tested microorganism with the range of 9 mm-18 mm at 25-100 μg ml-1.Conclusion: Natural Chlorophyllin from Mimosa pudica has significant activity against the five pathogenic test microorganisms.Keywords: Medicinal plants, Chlorophyllin, Mimosa pudica, Pathogenic bacteria, Pathogenic fung

Ethnomedicinal Plants Survey and Documentation Related to Paliyar Community

The present study is mainly focused on the ethnomedico botany of the tribe Paliyars a dominant ethnic group inhabiting the Western Ghats (Off Shoots) of Sirumalai Hills, Dindigul district. Tamil Nadu. In the present study the focus is on survey, documentation and enumeration of the medicinal plants practiced by the tribal Paliyars, As an outcome of the present investigations 30 plants have been identified and documented. The life style of the Paliyar was also studied

Analysis of User’s Opinion using Deep Neural Network Techniques

Through many research and discoveries it has been widely accepted that aspect-level sentiment classification is achieved effectively by using Long Short-Term Memory (LSTM) network combined with attention mechanism and memory module. As existing approaches widely depend on the modeling of semantic relatedness of an aspect, at the same time we ignore their syntactic dependencies which are already a part of that sentence. This will result in undesirably an aspect on textual words that are descriptive of other aspects. So, in this paper, to offer syntax free contexts as well as they should be aspect specific, so we propose a proximity-weighted convolution network. To be more precise, we have one way of determining proximity weight which is dependency proximity. The construction of the model includes bidirectional LSTM architecture along with a proximity-weighted convolution neural network

A FRACTIONAL DELAY FIR FILTER BASED ON LAGRANGE INTERPOLATION OF FARROW STRUCTURE

An efficient implementation technique for the Lagrange interpolation is derived. This formulation called the Farrow structure leads to a version of Lagrange interpolation that is well suited to time varying FD filtering. Lagrange interpolation is mostly used for fractional delay approximation as it can be used for increasing the sampling rate of signals and systems. Lagrange interpolation is one of the representatives for a class of polynomial interpolation techniques. The computational cost of this structure is reduced as the number of multiplications are minimised in the new structure when compared with the conventional structure

Electronic Payment Systems Influence In Retail Management System

Digital payment, often known as microelectronic compensation, is the process of transferring monetary value from one payment account to another using a digital device, such as a cell phone. An automatic compensation refers to a digital transaction that takes place between two parties.  The many forms of e-compensation include line and bank allocations, cards, mobile payments, and other methods.  Various factors can influence industries in determining the most effective type or types of automated payment systems for their merchants.   Numerical recompense facilities are platforms that facilitate transactions between two parties, the spender and the acceptor, using electronic means to exchange funds.   Electronic prices are increasing the accessibility of expenditure and financing.   Electronic payments are rapidly enhancing the efficiency of transactions.  The objective is to minimize the expenses and challenges associated with cash management, enhance the convenience of online transactions, and promote transparency in financial transactions between individuals.   The digital payment system is a significant factor in the rapidly expanding commercial landscape. The majority of organizations are actively engaging in digitalization.   The majority of significant company operations and transactions have transitioned into the era of digitalization.   The key objective of research is to analyses different modes of electronic payment systems, identify the factors influencing the adoption of robotic expense systems in retail operations, investigate the implementation and components of electronic payment in the city of Chennai, and assess the practices and preferences of respondents regarding payment methods, as well as the impact of electronic payment on retail operations.   The results indicate that electronic payment methods are beneficial for retail businesses

EVALUATION OF ANTIPROLIFERATIVE ACTIVITY OF SIDDHA ANTI-PSORIATIC FORMULATION PANCHAMUGA CHENDHURAM USING CULTURED HUMAN KERATINOCYTE CELL LINES

Objectives: This study was aimed at scientifically evaluating the in vitro antipsoriatic activity of Siddha drug Panchamuga Chendhuram (PMC) in human keratinocyte (HacaT) cell lines. Methods: The Siddha drug PMC tested for antipsoriatic activity on HacaT cell lines was morphologically examined by phase contrast microscopy, and the cell viability was determined by 3- (4, 5 dimethyl thiazole-2 yl) -2.5-diphenyl tetrazolium bromide assay. About 100 μl of different concentrations (2, 6, 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100 μg/ml) of the test samples were prepared in the cell culture medium and incubated for 24 h and 48 h to determine the viable cells. Results: The results revealed that Siddha drug PMC showed hopeful antiproliferative activity. In vitro studies showed that after 24 h and 48 h incubation, the inhibitory concentration 50 (IC50) values of PMC (IC50 20 μg/ml) were 72.08±27.56 μg/ml and 43.91±17.71 μg/ml, respectively, as compared with Asiaticoside as a positive control with an IC50 value of 20.13 μg/ml. Conclusion: Thus, this study provides scientific evidence about the efficacy of the Siddha drug PMC against the HacaT cell lines confirming its traditional use in psoriasis treatment and also emphasizes the need for antipsoriatic evaluation in animal models