Bannari Amman Institute of Technology
Bannari Amman Institute of Technology
Rajaguru H.,Bannari Amman Institute of Technology |
Prabhakar S.K.,Bannari Amman Institute of Technology
International Journal of Pharmaceutical Sciences Review and Research | Year: 2016
Around 1% percent of the human population in the world is affected by epilepsy. Because of the abnormal electrical patterns and discharges occurring in the brain, recurrent seizures occur. The mass activities of the neurons are recorded with the help of Electroencephalograph (EEG) placed on the scalp of the brain. EEG serves as a good companion to physicians in order to diagnose a lot of neurological disorders including epilepsy and stroke. For the diagnosis of epilepsy, detection of the epileptic seizures in the EEG signals forms a vital step. Earlier neurophysiologists used to inspect the EEG signals usually to differentiate between normal and abnormal EEG. With visual inspection, the detection of epilepsy was time consuming and costly too. As a result, a lot of approaches to detect the seizures automatically came into existence. Also the EEG recordings are lengthy and hence it is too difficult to process the entire data and so dimensionality reduction techniques are implemented to reduce the size of the EEG data. In this paper, the size of the entire EEG data is reduced with the help of Matrix Factorization (MF) Concept. The dimensionality reduced values are then transmitted through the Differential Space Time Block Coded Multiple-Input Multiple-Output System (DSTBC MIMO-OFDM). As a high Peak to Average Power Ratio (PAPR) is found for the DSTBC MIMO-OFDM System, Selective Mapping (SLM) Technique is incorporated to reduce the PAPR and Bit Error Rate (BER). At the receiver, a modified form of Mahalanobis Based Sparse Representation Classifier (M-SRC) is employed to classify the epilepsy from EEG signals. The bench mark parameters analyzed here are Specificity, Sensitivity, Time Delay, Quality Value, Performance Index, Accuracy, PAPR and BER. © 2016, Global Research Online. All Rights Reserved.
Anusha G.,Bannari Amman Institute of Technology
Indian Journal of Geo-Marine Sciences | Year: 2017
Ooty Lake is considered to be one of the International tourist spot in the world. Such a lake with extreme pollution due to improper maintenance of lake and sewage water mixing in the lake through the Kodappamund channel is a national shame. In this project the measures are discussed to purify the water mixing in the lake rather than avoiding them from mixing. For this remedial measure the bio-ozolyte process is chosen by first performing a laboratory experiment from the sample of water taken from the channel and the lake, testing it and comparing it with the other treatment processes and proving it to be the best. The bio-ozolyte process as expected reduced the pollution level in the water below the limitations of sewage water and thus decided to implement the same process on a large scale near the Ooty Lake. © 2017, National Institute of Science Communication and Information Resources (NISCAIR). All rights reserved.
Babu K.,Bannari Amman Institute of Technology
Journal of Earth System Science | Year: 2017
The Trichinopoly Group (later redesignated as Garudamangalam) has unconformable relationship with underlying Uttatur Group and is divided into lower Kulakanattam Formation and upper Anaipadi Formation. These calcareous sandstones are analysed major, trace and rare earth elements (REEs) to find out CIA, CIW, provenance and tectonic setting. The silica content of fossiliferous calcareous sandstone show wide variation ranging from 12.93 to 42.56%. Alumina content ranged from 3.49 to 8.47%. Higher values of Fe2O3 (2.29–22.02%) and low MgO content (0.75–2.44%) are observed in the Garudamangalam Formation. CaO (23.53–45.90) is high in these sandstones due to the presence of calcite as cementing material. Major element geochemistry of clastic rocks (Al2O3 vs. Na2O) plot and trace elemental ratio (Th/U) reveal the moderate to intense weathering of the source rocks. The Cr/Zr ratio of clastic rocks reveal with an average of 1.74 suggesting of felsic provenance. In clastic rocks, high ratios of ∑LREE/∑HREE, La/Sc, Th/Sc, Th/Co, La/Co and low ratios of Cr/Zr, and positive Eu anomaly ranges from (Eu/Eu* = 1.87–5.30) reveal felsic nature of the source rocks. © Indian Academy of Sciences.
Harikumar R.,Bannari Amman Institute of Technology |
Kumar P.S.,Bannari Amman Institute of Technology
Biomedical and Pharmacology Journal | Year: 2015
Epilepsy is a chronic neurological disorder of the brain, approximately 1% of the world population suffers from epilepsy. Epilepsy is characterized by recurrent seizures that cause rapid but revertible changes in the brain functions. Temporary electrical interference of the brain roots epileptic seizures. The occurrence of an epileptic seizure appears unpredictable. Various methods have been proposed for dimensionality reduction and feature extraction, such as Principal Component Analysis (PCA), Independent Component Analysis (ICA), and Singular Value Decomposition (SVD). The advantages of the regularization dimension are that it is more precise than other approximation methods and it is easy to derive an estimator in the presence of noise due to the fully analytical definition. This paper gives an overall review of the dimensionality reduction techniques suitable for the application of electroencephalography signals from epileptic patients.
Ayyappan S.,Government of Tamilnadu |
Sivakumar K.,Bannari Amman Institute of Technology
International Journal of Advanced Manufacturing Technology | Year: 2014
This paper investigates the performance enhancement of electrochemical machining (ECM) process by oxygenated aqueous sodium chloride (NaCl) electrolyte. It is experimentally found that the performance parameters such as material removal rate (MRR) and surface roughness (Ra) are greatly improved with this new mix of electrolyte. The oxygen gas is suitable to electrochemically react with aqueous NaCl solution to enhance the oxidation of metal oxides on the machined surface to increase the MRR. In this work, experimental investigations are conducted with both aqueous NaCl electrolyte and oxygenated aqueous NaCl electrolyte on the alloy steel specimen (20MnCr5). Largest MRR of 7.33 g/min with Ra of 1.90 μm is obtained in oxygenated NaCl environment compared to MRR of 1.98 g/min and Ra of 3.13 μm in aqueous NaCl environment with machining conditions of voltage (V) of 17 V, tool feed rate (F) of 0.5 mm/min, and electrolyte concentration (EC) of 142.5 g/l of water. Microstructure of surface of the specimen machined with oxygenated aqueous NaCl electrolyte is more homogeneous and promises a good surface quality. © 2014, Springer-Verlag London.
Saravanan R.,Bannari Amman Institute of Technology
International Journal of Advanced Manufacturing Technology | Year: 2010
With the advent use of sophisticated and high-cost machines coupled with higher labor costs, concurrent optimization of machining process parameters and tolerance allocation plays a vital role in producing the parts economically. In this paper, an effort is made to concurrently optimize the manufacturing cost of piston and cylinder components by optimizing the operating parameters of the machining processes. Design of experiments (DoE) is adopted to investigate systematically the machining process parameters that influence product quality. In addition, tolerance plays a vital role in assembly of parts in manufacturing industries. For the selected piston and cylinder component, improvements efforts are made to reduce the total manufacturing cost of the components. By making use of central composite rotatable design method, a module of DoE, a mathematical model is developed for predicting the standard deviation of the tolerance achieved by grinding process. This mathematical model, which gives 93.3% accuracy, is used to calculate the quality loss cost. The intent of concurrent optimization problem is to minimize total manufacturing cost and quality loss function. Genetic algorithm is followed for optimizing the parameters. The results prove that there is a considerable reduction in manufacturing cost without violating the required tolerance, cutting force, and power. © 2010 Springer-Verlag London Limited.
Anandha Moorthy A.,Bannari Amman Institute of Technology
International Review of Mechanical Engineering | Year: 2013
AA2218 based self-lubricating metal matrix composite was prepared with 5, 10 & 15 weight percent of fly ash and 4 weight percentage of MoS2. Dry sliding wear behavior of self lubricating composite was tested at room temperature by pin on disc wear testing apparatus. Wear rate, Coefficient of friction and volume loss of self lubricating composite has been tested as the result of applied load, sliding velocity and weight percent of fly ash particles. From this investigation it was observed that the wear rate increases with the increasing load, at the same time wear rate and coefficient of friction get reduced to increase in wt. % of fly ash particles. Another dominant factor is the formation of the tribochemical layer at the interface, which was formed by MoS2. Formation of tribochemical layer was clearly observed from SEM micrographs. This study reveals that wear resistance of the self-lubricating composites containing 15 wt. % fly ash and 4 wt. % MoS2 has been superior to that of the other compositions. © 2013 Praise Worthy Prize S.r.l. - All rights reserved.
Boopathi S.,Bannari Amman Institute of Technology |
Sivakumar K.,Bannari Amman Institute of Technology
International Journal of Advanced Manufacturing Technology | Year: 2013
The near-dry wire-cut electrical discharge machining (WEDM) process is an environment-friendly manufacturing process, in which there is no harmful effect to the operators. The authors focus on the non-polluting ways to cut the materials and to meet the technical requirements like high material removal rate (MRR) and low surface roughness (Ra). In the near-dry WEDM, the finite discrete periodic series sparks between the wire electrode and conducting work material separated by minimum quantity of deionized water mixed with compressed air (air-mist) as a dielectric medium. In the present research, parametric analysis of the process has been performed with the molybdenum wire tool and high speed steel (HSS-M2) work piece. Experiments have been performed using air-mist as the dielectric medium to study the impact of gap voltage, pulse-on time, pulse-off time, airmist pressure and discharge current on the MRR and Ra using the mixed orthogonal (L18) array-Taguchi method. Taguchi based analysis of variance test was performed to identify the significant parameters. The gap voltage, pulse-on time, discharge current and air-mist pressure were found to have momentous effects on MRR and Ra. The best regression models for MRR and Ra have been developed by regression analysis. The optimal rough and finish cutting parameters have been predicted by Pareto-front using the multi-objective evolutionary algorithm (MOEA). © Springer-Verlag London 2012.
Dhanapal V.,Bannari Amman Institute of Technology |
Subramanian K.,Bannari Amman Institute of Technology
Carbohydrate Polymers | Year: 2014
Double network polymers (DNP) of different compositions were photosynthesized using sodium alginate (NaAlg) and superabsorbent polymer (SAP). They were characterized by FT-IR, thermal stability (TG), morphology by scanning electron microscopy (SEM), and its mechanical properties were also evaluated for their dye adsorption-desorption characteristics via adsorption isotherms at different temperature and pH values. The spectrophotometric determination of adsorbed dye indicated that the maximum dye uptake in column mode was 439 mg/g. The nearly identical visible absorption spectra of the fabrics dyed with virgin and recovered dyes indicated that the recovered dye retained its structural stability during column recovery and the dyed fabrics possess good color fastness properties. Dye adsorption kinetic and de-sorption mechanism were found to be pseudo-first-order and non-Fickian, respectively. The adsorption showed best fit for Langmuir adsorption isotherm. The changes in the thermodynamic parameters namely Gibbs free energy (ΔG°), entropy (ΔS°) and enthalpy (ΔH°) for the dye-adsorbent systems inferred that the adsorption process was spontaneous and exothermic. © 2014 Elsevier Ltd.
Perumalraj R.,Bannari Amman Institute of Technology
Journal of Industrial Textiles | Year: 2013
A study of single-stage antimicrobial and crease proof finishing of cotton materials has been reported. The bleached and reactive dyed cotton woven fabrics have been selected for this finishing process. The various concentrations of DMDHEU and triclosan and temperature have been selected to analyze the crease recovery and antimicrobial properties of fabric using Box-Behnken design. It was observed that increasing the concentration of DMDHEU and triclosan increases the crease recovery angle. It is also observed that the breaking strength retention properties have been reduced when increasing the concentration of DMDHEU and triclosan and temperature. It is also found that the antimicrobial effect was increased when the concentration of DMDHEU and triclosan increased. © The Author(s) 2012 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav.