40 results on '"M. Shanmuganathan"'
Search Results
2. Revealing Adaptability of Sugar Beet (Beta vulgaris) Genotypes Through Environmental Interaction (GEI) connecting Variations in Tuber Yield
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M. Shanmuganathan, D. Kumaresan, S. Geetha, M. Dhasarathan, M. Jayaramachandran, R. Sudhagar, T. Selvakumar, L. Chitra, S. Mohan, A. Gurusamy, and K. Iyanar
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Plant Science ,Agronomy and Crop Science ,Food Science - Published
- 2023
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3. Improving the cooling performance of the straight finned heat sink (SHS) for computer processor using an inorganic PCM
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M. Shanmuganathan, S. Sandeep Kumar, P. Hosanna Princye, A.R. Aravind, Sarika Chhabria, and C.A. Jyothirmayee
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- 2022
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4. Face Identification based on Informative Knowledge Distillation using Morphological Model
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M. Shanmuganathan and T. Nalini
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- 2022
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5. (839) Assessment of the Optimal Echocardiographic Profile on Left Ventricular Assist Device Support: Consider the Right Parameters
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F. Riesgo Gil, G. Gallone, A. Morley-Smith, O. Dar, J. Ibero Valencia, M. Monteagudo Vela, F. Fiorelli, M. Konicoff, G. Edwards, B. Raj, M. Shanmuganathan, S. Frea, G. De Ferrari, V. Panoulas, U. Stock, C. Bowles, and J. Dunning
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Pulmonary and Respiratory Medicine ,Transplantation ,Surgery ,Cardiology and Cardiovascular Medicine - Published
- 2023
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6. Invasive validation of pressure-volume loops derived from cardiovascular magnetic resonance imaging and brachial blood pressure in heart failure patients
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P Arvidsson, P G Green, W D Watson, M Shanmuganathan, E Heiberg, G L De Maria, H Arheden, N Herring, and O J Rider
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Cardiology and Cardiovascular Medicine - Abstract
Introduction Left ventricular (LV) pressure-volume (PV) loops provide gold-standard physiological information but require invasive measurements of ventricular intracavity pressure, limiting clinical and research applications. Recent development has seen the introduction of non-invasively computed PV loops from cardiovascular magnetic resonance (CMR) volumetry and a brachial blood pressure measurement. The approach combines LV volumes with a time-varying elastance function to compute time-resolved LV pressures and was validated on invasive pressure data from a porcine model. The method is readily implemented using standard CMR sequences and provides measures of hemodynamic parameters including stroke work, myocardial efficiency, and contractile state. However, the method remains to be validated in patients using invasive left ventricular pressure recordings. Purpose To validate for the first time in human patients the performance of non-invasively computed PV loops against invasive measures. Methods Four heart failure patients underwent two subsequent sessions of CMR cine imaging and simultaneous brachial blood pressure measurement, with intravenous administration of two different vasoactive drugs, resulting in two different haemodynamic states for each patient. LV catheterization was then conducted with repeat administration of the same infusions. Pressure-volume loops were computed from CMR volumes combined with 1) a time-varying elastance function scaled to brachial blood pressure and temporally stretched to match volume data, and 2) invasive pressures averaged from multiple sampled beats. Method comparison was conducted using linear regression and Bland-Altman analysis. Results Figure 1 shows non-invasively derived PV loop parameters compared to invasive data. The non-invasive method demonstrated strong correlations and low bias for stroke work (R2=0.97, bias 4.6%, p Conclusions Pressure-volume loops can be precisely and accurately computed from cardiovascular magnetic resonance imaging and brachial cuff blood pressure in humans, and is ready for use in research applications. Funding Acknowledgement Type of funding sources: Foundation. Main funding source(s): Swedish Heart Lung Foundation
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- 2022
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7. A Critical Scrutiny of ConvNets (CNNs) and Its Applications: Review
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M. Shanmuganathan and T. Nalini
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General Medicine - Published
- 2022
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8. Deductive learning approaches for Face Recognition by using Gabor Feature
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M Shanmuganathan and T Nalini
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General Computer Science ,Feature (computer vision) ,Computer science ,business.industry ,Computational Mechanics ,Pattern recognition ,Artificial intelligence ,business ,Engineering (miscellaneous) ,Facial recognition system - Published
- 2021
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9. Audible pedestrian warning system using embedded system
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T. Nalini, S. Sendil Velan, M. Shanmuganathan, K. Kajendran, and P. Radhakrishnan
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Mechanics of Materials ,Electrical and Electronic Engineering ,Industrial and Manufacturing Engineering ,Electronic, Optical and Magnetic Materials - Published
- 2023
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10. Assessment of Quality of Ground Water Body of Neelangarai and Triplicane Area in Chennai, Tamil Nadu in The Post Inundation Circumstances
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A. Rajendran, C. Mansiya, and M. Shanmuganathan
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Although flood hit the entire part of Chennai, Tamil nadu some three years ago, the quality of water is still found to be worse because of major inundation in these areas. The current inspection deals with the physico-chemical analysis of the ground water samples collected from ten locations in Neelangarai and Triplicane area in Chennai, Tamil Nadu and assessed using Heber Water Quality Index (HWQI) in the post tsunami circumstances. The factors examined were pH, fecal coliform, total dissolved solids (TDS), dissolved oxygen (DO), temperature biochemical oxygen demand (BOD) and turbidity. In addition to these parameters, pointers like electrical conductivity and salinity were also taken into consideration. The over all HWQI outcomes for all the trials in Neelangarai area were determined between 65.02 and 72.25 and Triplicane area was 66.64 - 70.71, which suggest that all the samples are medium to good in quality and could used for human consumption.
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- 2022
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11. In Vitro Culture of Elite Sugarcane Cultivar (Saccharum spp) by Shoot Apical Meristem and Effect of Plant Hormones on Shoot Regeneration
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M. JayachandranJayachandran, M. Shanmuganathan, and R. Anitha
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Saccharum ,Horticulture ,Regeneration (biology) ,Shoot ,Cultivar ,Biology ,Meristem ,biology.organism_classification ,In vitro ,Hormone - Published
- 2019
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12. Physico-chemical analysis of soils for the better yield of sugarcane and rice using Heber soil quality index
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M Shanmuganathan and A Rajendran
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Nutrient ,Agronomy ,Soil quality index ,Yield (finance) ,Soil water ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Environmental science ,04 agricultural and veterinary sciences ,010502 geochemistry & geophysics ,01 natural sciences ,Soil quality ,0105 earth and related environmental sciences - Abstract
Soil quality plays an important role in the assessment of sustainable land-use systems. Assessment of soil quality will always help farmers to apply correct fertilisers in correct proportions to th...
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- 2019
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13. Technique for Order Preference by Similarity to Ideal Solution (Topsis) Applied to Image Fusion -Limitations
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M. Shanmuganathan and T. Nalini
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Image fusion ,Mathematical optimization ,Similarity (geometry) ,Ideal (set theory) ,Ranking ,TOPSIS ,Ideal solution ,Multiple-criteria decision analysis ,Preference (economics) - Abstract
This manuscript concerns about decision-analysis employing TOPSIS, member of the MCDA procedures (MCDA-Multi-Criteria Decision-Analysis), that are initiated by Yoon furthermore Hwang in 1981 beside certain innovations by Yoon(1987) Hwang, Lai along with Liu (1993). It constitutes objective established procedure for determining the option that is very nearest to the optimum one. Using this procedure, choices are ranked in reference to the ideal one. Ideal outcome is a solution that is ideal from any aspect that doesn’t exist practically, tries to imprecise the method. Generally, for determining the correlation of a choice to nonoptimal and optimal level, considering the extent of the substitute upon ideal with other feasible one. This manuscript indicates the utilization of above said procedure in decision-analysis in image fusion arena. The manuscript includes: I.Introduction, II. Procedure of TOPSIS, III. Applied in Image Fusion Arena, IV. Ranking Inconsistency, V.Strengths, Weakness and Limitations, VI.Conclusion, References.
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- 2021
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14. Face Detection based on Extraction by K-NNC and NMC Framework
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M. Shanmuganathan and C. Nalini
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021110 strategic, defence & security studies ,business.industry ,Computer science ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,0211 other engineering and technologies ,Sign (semiotics) ,Image processing ,02 engineering and technology ,010501 environmental sciences ,01 natural sciences ,Facial recognition system ,Field (computer science) ,Identification (information) ,Face (geometry) ,Computer vision ,Artificial intelligence ,business ,Face detection ,Image resolution ,0105 earth and related environmental sciences - Abstract
Humans are truly adept at perceiving countenances and complex examples. The investigation on perceiving human appearances with a framework is done through image processing. Image processing is any type of sign handling for which the information is a image., For example, a photo or video outline and the yield of image handling might be either a image or a lot of attributes or boundaries are identified with the image. Numerous explorations are done in the field of image handling yet at the same time there are objectives to be reached. Most of the image processing strategies, where the image is considered as a two-dimensional sign and standard sign handling procedures are applied to it. Face, an essential characteristic that recognizes one subject from another, should be perceived commonly and regularly in current PC vision and mixed media utilizations. This includes, some notable identification of face models should be resent upon mobiles or else shrewd surveillance cameras to address this present reality necessities that intend to recognize low-goal faces along with incredibly minimum processing expense together with storage impression. Toward this end, it is important to investigate a possible arrangement can directly address a crucial test in recognize faces. These face identification frameworks are one such fields, where the processing of image is utilized. A powerful Face recognition strategy can be accomplished by making a framework that could perceive faces from an image or a video scene and analyzes it over the images in the information base.
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- 2020
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15. The Problem of Rank Reversal in Combination with AHP and TOPSIS Applied to Image Fusion
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C. Nalini and M. Shanmuganathan
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Discrete wavelet transform ,Image fusion ,Rank reversals in decision-making ,Computer science ,Rank (computer programming) ,Analytic hierarchy process ,Pairwise comparison ,TOPSIS ,Data mining ,Multiple-criteria decision analysis ,computer.software_genre ,computer - Abstract
Selecting a method is a multi-criteria decision-making issue which includes both qualitative and quantitative aspects. In order to choose the best method or a solution,, it is necessary to make a transition between both visible and invisible aspects. The focus of this work is to expand a methodology to evaluate the best method based on Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS). In this manuscript, by ‘method’ is meant an algorithm. The relevant criteria which affect the process of algorithmic selection are the image, the sensors, and the resources, and the available alternatives are discrete wavelet transform (DWT)-based image fusion, principal component analysis (PCA)-based image fusion, intensity hue saturation (IHS)-based image fusion, and Laplacian-based image fusion. The assessments of each criterion are calculated using pairwise comparisons based on analytic hierarchy process (AHP) and inserted to the TOPSIS method to rank the alternatives. The process of selecting the alternative and the drawback of an algorithm (AHP, TOPSIS) is demonstrated with the help of numerical example. This manuscript comprises the following section headings: Introduction, Concept of TOPSIS and AHP, Hybrid Method, A Numerical Example, Computation of TOPSIS, Occurrence of Rank Reversal, Conclusion, and References.
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- 2020
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16. Deep Learning Approaches to Image Classification
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C. Nalini and M. Shanmuganathan
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Operationalization ,Artificial neural network ,Contextual image classification ,Biometrics ,Computer science ,business.industry ,Deep learning ,Machine learning ,computer.software_genre ,Facial recognition system ,Statistical classification ,Identification (information) ,Artificial intelligence ,business ,computer - Abstract
Face recognition methodology (human face) have made many improvements in the emerging world have made many face identification is a technic of detecting a face through a technicality. It likens the image with a dataset of known images to encounter a match. Face identification authenticates personal identity, as well as raising secrecy challenges. Artificial neural networks (ANN) are used extensively in facial processing of images. Back-propagation neural networks (BPNNs) are mainly used for classification of facial images and also it achieves high accuracy. Nevertheless, there is a variation due to different neural designs and implementations. Accordingly, investigators usually need to do several observational trials before they can finalize the neural network design, but this is a slow process which considerably mitigates the efficiency of using the above-said method (BPNN) and the final pattern still not be quintessential. Despite the precision of image identification system is a biometric mechanism is lower than iris or fingerprint identification, it is commonly accepted its noncontact procedures. Newly, it had also been made widespread as a commercial and a business tool. As a result, there are certain guidelines for a valid design and operationalization of BPNNs. This work endeavours to find and abbreviate certain guidelines recommended by various researchers through specialized literature and observations. To contribute academicians with history and framework, somewhat ANN basics are also initiated.
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- 2020
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17. Face Recognition using Nearest Neighbour and Nearest Mean Classification Framework : Empirical Analysis, Conclusions and Future Directions
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M. Shanmuganathan and T. Nalini
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History ,Computer Science Applications ,Education - Abstract
Human Face recognition algorithms have made huge progress in the last decade. In this manuscript, we have presented an approach for the implementation of a face recognition system in a successful manner by varying pose, scale, lighting, and age variation. The different empirical analysis was performed with various datasets for face detection and face identification. Face identification system detects efficiently segments and recognizes face in a cluttered sequence under varying pose, lighting and age variations. From this experimental analysis morphological model outperformed k-NNC, NMC based closest mean classifier and informative knowledge distillation with fairly reasonable accuracy. Three proposed methods on the basis of an efficient way of handling the face recognition problems. The morphological method outperformed well when compared with k-NNC, NMC based closest mean classifier a proposed method, and another innovative method named Informative knowledge Distillation. The morphological method is suitable for large datasets where occlusion, pose variation, age variations, and different expression of images.
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- 2022
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18. The Empirical Analysis For Effective Prediction of Crop Price Using Neuro Evolutionary Algorithm based on Machine Learning Approach
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T. Nalini, A. Rama, M. Shanmuganathan, Dahila Sam, and Dr.Adlin Sheeba
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History ,Computer Science Applications ,Education - Abstract
Based on a neuro evolutionary algorithm, this study proposes a neural network model for efficient crop price prediction. When viewed from the perspective of agricultural business, the market price of corn reflects its current demand. For agricultural management, to improve profits, it is important to track and predict the market price. In this manuscript, a neural network model based on the output prediction of a neuro evolutionary algorithm is used to predict the price of the crop and compared with the existing Naive Bayes algorithm. By recognizing patterns in our training dataset, which serves as one of the inputs to the algorithm, we are able to determine the price of the crop. The parameters (Yield, Rainfall, Minimum Support Price, and Maximum Trade ) are fed to the algorithm by the user. It is compared with existing algorithms to determine the performance of the proposed algorithm. The features considered for the analysis are Climate, historical costs, location, demand indicators, and crop health are the variables used for predicting future corn crop cost. According to the empirical analysis, the proposed model is significantly more accurate in predicting crop prices.
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- 2022
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19. POS-874 DEATH AND KIDNEY DISEASE: IS COVID-19 COLOR-BLIND?
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M. SHANMUGANATHAN, B.L. Goh, K. Peariasamy, N.A. Misnan, S.K. Chidambaram, E.F.S. Wong, M.D. Pathmanathan, K.L. Ang, and H.S. Wong
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Nephrology - Published
- 2022
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20. Soil Fertility Analysis for the Cultivation of Sugarcane and Rice in Thiruvarur Area
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M. Shanmuganathan and A. Rajendran
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History ,Irrigation ,business.industry ,04 agricultural and veterinary sciences ,010501 environmental sciences ,01 natural sciences ,Computer Science Applications ,Education ,Rainwater harvesting ,Plant science ,Agronomy ,Agriculture ,040103 agronomy & agriculture ,Organic farming ,0401 agriculture, forestry, and fisheries ,Environmental science ,Plant breeding ,Soil fertility ,business ,Soil conservation ,0105 earth and related environmental sciences - Abstract
In order to improve the yield of any crop, it is absolutely essential to carry out soil testing periodically. This will not only improve the procurement but also will provide eco-friendly ambience. Testing all soil quality parameters will be a laborious and time-consuming process. To overcome this problem, soli quality index can be of immense help. Unlike many water quality indices available, only a very few soil quality indices are in existence. Newly developed soil quality index called Heber soil quality index (HSQI) is widely used to identify and differentiate the various types of soils. The HSQI values of all samples were found to be in the range of 72.36 – 83.83 divulging a fact that the nature of soils inspected in this examination is good for the plantation of sugarcane and rice. The index was found to be time saving and cost-effective method of assessing the fertile nature of the soil for the effective farming of sugarcane and rice. Soil quality assessment in the light of HSQI is proposed to offer a better perceptive of the soil property measures to be taken to improve the quality of soil system for the better yield of any crop including sugarcane and rice.
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- 2018
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21. Soil assessment using Heber soil quality index for improving the cultivation of rice and sugarcane
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A. Rajendran and M. Shanmuganathan
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chemistry.chemical_classification ,Soil test ,business.industry ,04 agricultural and veterinary sciences ,010501 environmental sciences ,01 natural sciences ,Soil quality ,Bulk density ,Nutrient ,chemistry ,Agronomy ,Agriculture ,040103 agronomy & agriculture ,Organic farming ,0401 agriculture, forestry, and fisheries ,Organic matter ,General Agricultural and Biological Sciences ,business ,Literature survey ,0105 earth and related environmental sciences ,Mathematics - Abstract
From the extensive literature survey, it is understood that only a few soil quality indices have been formulated to check the quality of soil systems which is suitable for the cultivation of rice and sugarcane. The present work assesses the quality of the soil samples collected from 15 places of Thanjavur and Tiruvarur districts, Tamil Nadu, India. Soil samples were assessed according to the Heber soil quality index (HSQI) for the following 12 parameters: available nitrogen (kg/ha), pH, water holding capacity (%), available phosphorous (kg/ha), texture, available potassium (kg/ha), organic matter (%), bacterial content (SPC/g), electrical conductance (mmho/cm), chloride (mg/L), total hardness (mg/L), and bulk density (g/m3). Each parameter was subjected to statistical Q test analysis. The information such as the test result, weighting factor, and the Q value were used to formulate the soil quality index based on HSQI. The total HSQI values of all the samples investigated in this study ranged from 72.75 to 85.72, which indicates that these soil samples are of good quality. This work will be highly useful and may result in better farm management through more cost-effective nutrient decisions.
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- 2018
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22. P1507Role of adjuvant carotid ultrasound in women undergoing stress echocardiography for the assessment of suspected angina with no previous history of coronary artery disease
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Sothinathan Gurunathan, M Shanmuganathan, Roxy Senior, Rajdeep S. Khattar, and Reinette Hampson
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medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,Ischemia ,medicine.disease ,Coronary artery disease ,Angina ,Framingham Heart Study ,Internal medicine ,Diabetes mellitus ,Cardiology ,Stress Echocardiography ,Medicine ,Cardiology and Cardiovascular Medicine ,business ,Adjuvant ,Cause of death - Abstract
Introduction Traditional risk assessment tools classify the majority of women at low risk despite cardiovascular disease remaining the leading cause of death in women. Additionally conventional stress testing techniques have poor predictive value in women, due to unique pathophysiological mechanisms causing ischaemia in women, and the lower prevalence of obstructive CAD. The study sought to evaluate the role of adjuvant carotid ultrasound (CU) in women attending for stress echocardiography (SE). Methods and results 415 women (Mean age 62±10 years, 28% Diabetes Mellitus, Mean BMI 28) attending for SE prospectively underwent CU, to assess Carotid Intima-media thickness (CIMT) and the presence of plaque. 47 women (11%) had inducible wall motion abnormalities, and carotid disease (CD) was present in 46% (Carotid plaque in 41%, 15% CIMT >75th percentile). Women with CD were older (65 vs 58 years, p The positive predictive value of SE for flow-limiting CAD was 51%, but the presence of carotid plaque improved this to 71% (p70% angiographic. Conclusion CU significantly improves the accuracy of SE alone for identifying flow-limiting disease on coronary angiography. Non-invasive assessment of subclinical atherosclerosis using CU offers an individualized disease-guided approach in women, where conventional scoring systems offer modest risk stratification.
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- 2019
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23. Morpho-Physiological and Growth Parameter Changes Associated with Improved Sprouting of Sugarcane bud Chips Treated with Growth Regulator and Nutrient Solutions
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R.Anitha, S.Thiruvarassan, P.Christy Nirmala Mary, M. Shanmuganathan, and M.Jayachandran
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Ethrel, macro and micronutrients, bud chip, seedling vigour, cane yield ,food and beverages - Abstract
A field experiment was conducted to evaluate the efficacy of different chemicals on improved sprouting of sugarcane bud chips. The study consisted of nine treatments (T1 - Untreated check, T2 - Foliar spray of 1%Urea in 15 th and 25 th day after planting, T3 - Foliar spray of marco and micronutrients solution weekly twice from 10th DAP to 25th DAP, T4 - Soaking of bud chips in 10% Seaweed extract for 2 hrs, T5 - T3+ Soaking of bud chips in 0.01% Ethrel for 2 hrs, T6 - T3+ Soaking of bud chips in 0.01% Ethrel and 0.1% Calcium chloride for 2 hrs, T7 - Soaking of bud chips in 20% Seaweed extract for 2 hrs, T8 - Soaking of bud chips in 0.01% Ethrel for 2 hrs, T9 - T3+ Soaking of bud chips in 0.1% Calcium chloride for 2 hrs). In this study, CoC 24 variety was selected and three replications laid out in randomized block design. Significant variation in morphophysiological characters viz., survival percentage, leaf area, seedling vigour index, shoot length and root length was observed with different chemical treatments. Application of foliar spray of micro and macronutrient solution in weekly twice to each portray seedlings from 10th DAP to 25th DAP + soaking of bud chips in 0.01% etherl and 0.1% calcium chloride for 2 hrs registered significantly maximum mean values of growth parameters in plant and ratoon crop viz., tiller population, millable cane, cane length, cane girth, single cane weight and number of nodes. The same treatment significantly registered the maximum cane yield and sugar yield.
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- 2019
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24. Resistance to borer complex infestation in sugarcane clones
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R. Nageswari, V. Baskaran, R. Chandrasekaran, and M. Shanmuganathan
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Resistance (ecology) ,Agronomy ,Agroforestry ,Infestation ,medicine ,General Medicine ,Biology ,medicine.disease_cause - Published
- 2017
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25. Flaws of Quantification Method as applied to Software Requirements Prioritization
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M. Shanmuganathan and K. Kajendran
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Prioritization ,Computer science ,Software requirements ,Reliability engineering - Published
- 2018
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26. Assessment of Soil Quality of Some Lands in Thanjavur and Tiruvarur Districts for Improved Cultivation of Rice and Sugarcane
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A Rajendran and M Shanmuganathan
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Agronomy ,Agroforestry ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Environmental science ,04 agricultural and veterinary sciences ,General Medicine ,010501 environmental sciences ,01 natural sciences ,Soil quality ,0105 earth and related environmental sciences - Published
- 2016
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27. An Improved Graphical Authentication System to Resist the Shoulder Surfing Attack
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M. Shanmuganathan and R. Sudha
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Password ,Zero-knowledge password proof ,Password policy ,Engineering ,Software_OPERATINGSYSTEMS ,Cognitive password ,business.industry ,Internet privacy ,Computer security ,computer.software_genre ,Login ,One-time password ,S/KEY ,Password strength ,ComputingMilieux_MANAGEMENTOFCOMPUTINGANDINFORMATIONSYSTEMS ,business ,computer - Abstract
The consumption of banking applications are more and popular on Android devices but it is not secure. To make secure on those confidential application such as banking, business application and personal data, password is provided to enhance privacy. Nowadays those passwords are easily usurped by hackers through shoulder side attacks or observing videos. To overcome from this inconveniences of accessing the account in public places, the proposed idea is to make smart way to authenticate the user bank account through the pictorial password and by injecting the indirect pin to the system. To predict the original password, temporary login indicator is used while accounting to login. The Existing paper does not safeguard the user's account from hackers, when the password is misused. The forget password module and banking service module is added which could be innovative and an effective idea to authenticate the proposed system. By implementing the above proposed idea, data and information on devices are maintained confidentially.
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- 2017
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28. The use of titanium non-penetrating clips to close the spinal dura
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Jake Timothy, M Shanmuganathan, S J Hanna, A Tyagi, and N Furtado
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Adult ,Male ,Ependymoma ,medicine.medical_specialty ,Leak ,Dura mater ,medicine.medical_treatment ,Bed rest ,Meningioma ,Postoperative Complications ,Humans ,Medicine ,CLIPS ,Prospective cohort study ,Aged ,Retrospective Studies ,computer.programming_language ,Aged, 80 and over ,Titanium ,business.industry ,Retrospective cohort study ,General Medicine ,Middle Aged ,Surgical Instruments ,medicine.disease ,Subdural Effusion ,Surgery ,Treatment Outcome ,medicine.anatomical_structure ,Spinal Cord ,Female ,Dura Mater ,Neurology (clinical) ,business ,computer - Abstract
We present the results of our initial experience in the use of non-penetrating titanium clips in the closure of spinal dura. A retrospective analysis of case notes of patients identified from the unit database was carried out, limited to adults. A proforma that included demographic details, the diagnosis, the procedure undertaken, whether or not additional dural closure methods were used, the use of bed rest and any complications, including cerebrospinal fluid (CSF) leak. There were 58 patients with a mean age of 53 years. The commonest diagnoses were meningioma, ependymoma and neurofibroma. Eight patients had additional methods of dural closure used and approximately half the patients had a period of postoperative bed rest. Eight patients (13.7%) had a CSF leak. Our early experience with the use of non-penetrating clips for the closure of the spinal dura is presented. We have found them easy to use, especially in anatomically-restricted spaces and rapid in their application. However, our results have revealed an unexpectedly high complication rate. A further prospective study to evaluate them more fully is planned.
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- 2007
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29. Genetic variability and multivariate analysis in pearl millet (Pennisetum glaucum (L.) R. Br.) germplasm for dual purpose
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M. Shanmuganathan, K. Mohanraj, and A. Gopalan
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Germplasm ,Genetic divergence ,Genetic diversity ,biology ,Agronomy ,food and beverages ,Genetic variability ,Cultivar ,Heritability ,biology.organism_classification ,Agricultural and Biological Sciences (miscellaneous) ,Pennisetum ,Panicle - Abstract
Genetic variability and diversity in pearl millet (Pennisetum glaucum (L.) R.Br.) was studied with 104 germplasm accessions of different origin. Analysis of variance indicated significant variances among the accessions for all the characters studied. The maximum variation was recorded for number of tillers, number of leaves, leaf length and breadth, panicle length, leaf weight, stem weight, leaf stem ratio, green fodder yield, crude protein content and grain yield indicates the possibilities of improving these characters through phenotypic selection for the development of dual purpose cultivars (grain cum fodder yield). High heritability coupled with high genetic advance of percentage of mean was observed for all characters except days to 50% flowering suggesting that these traits are governed by additive gene action and possibility of improving these characters through selection. Based on the D2 analysis all the accessions were grouped into twelve clusters. Cluster I retain the maximum accessions of 82 and nine clusters retained only one accession each. The intra cluster distance ranged from 0.00 to 6.71 and the inter cluster distance was recorded highest between cluster XI and cluster XII. Cluster XII exhibited maximum mean value for five characters. Based on the relative contribution, plant height contributed more towards genetic divergence.
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- 2006
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30. Genetic parameters for hydrocyanic acid content in forage sorghum (Sorghum bicolor L. Moench)
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M. Shanmuganathan, A. Gopalan, and K. Mohanraj
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education.field_of_study ,biology ,Heterosis ,Population ,Randomized block design ,Sowing ,Forage ,Sorghum ,biology.organism_classification ,Agricultural and Biological Sciences (miscellaneous) ,Agronomy ,Analysis of variance ,education ,Hybrid - Abstract
Six lines (IS 1003, IS 3504, IS 3541, IS 6354, CO 27 and CO 28) and four testers (IS 0030, AKSS 5, GSSV 1 and TNS 52) were crossed in line x tester design to produce 24 hybrid combinations. These hybrids along with their ten parents were grown in a randomized block design with three replications. The samples for estimation of hydrocyanic acid content were taken 32 days after sowing. The analysis of variance indicated significant differences for HCN content in all the genotypes. It also clearly shown that, the specific combining ability (SCA) variance for HCN content was higher than general combining ability (GCA) variance indicating the trait is controlled by non additive gene action. The parents IS 3541, CO 27 and IS 0030 were found to be the best ones based on GCA effects and the hybrids IS 1003 x TNS 52, IS 6354 x IS 0030 and IS 3541 x TNS 52 were found to have maximum negative SCA effects for HCN content. Heterosis breeding, recurrent selection and other population improvement procedures were suggested for getting varieties with reduced HCN contents.
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- 2006
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31. Genetic diversity in sorghum (Sorghum bicolor L. Moench)
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M. Shanmuganathan, A. Gopalan, and K. Mohanraj
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Genetic diversity ,Agronomy ,Soluble solids ,Randomized block design ,Sorghum bicolor ,Grain yield ,Plant breeding ,Biology ,Sorghum ,biology.organism_classification ,Agricultural and Biological Sciences (miscellaneous) ,Stover - Abstract
Fifty five accessions from ICRISAT with different geographical origins were grown at Department of Forage Crops, Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu during June, 2002 in a randomized complete block design with two replications in order to assess the genetic diversity. Five randomly selected plants from each accession were used to record observation on days to 50 percent flowering, plant height, leaf length, leaf breadth, number of leaves, leaf/stem ratio, Stover yield, grain yield per plant and total soluble solids. Genetic diversity was studied using Mahalanobis’s D2 statistics and clustering of accessions was done according to Tocher’s method. The analysis of variance showed highly significant differences among the accessions for all the characters studied. The clustering pattern revealed that genetic diversity was not necessarily correlated with geographical origins. Stover yield made the largest contribution to total variability (48.82 percent) followed by total soluble solids (19.53 percent) and days to 50 percent flowering (10.98 percent). Multivariate analysis grouped the accessions in to 21 clusters. Cluster II and V were the largest and consisted of 10 accessions each followed by cluster I (8 accessions) and cluster IV (5 accessions). The largest inter cluster distance were observed between cluster XII and XVIII (73.73) followed by VI and XVIII (71.67) indicating that the crosses between accessions of these different clusters could give heterotic responses and better segregants after hybridization.
- Published
- 2006
- Full Text
- View/download PDF
32. Genetic analysis of pearl millet for phytic acid content
- Author
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A. Gopalan, K. Mohanraj, and M. Shanmuganathan
- Subjects
Diallel cross ,Phytic acid ,chemistry.chemical_compound ,chemistry ,business.industry ,Genotype ,Analysis of variance ,Gene effect ,Biology ,business ,Agricultural and Biological Sciences (miscellaneous) ,Genetic analysis ,Biotechnology - Abstract
A diallel set of 11 pearl millet genotypes was made to evaluate General Combining Ability (GCA) effects of parents and Specific Combining Ability (SCA) effects of cross combinations. The analysis of variance of diallel progenies exhibited significant genotypic differences. Different analyses, i.e., combining ability analysis and genetic component analysis, showed that both additive and non additive gene effect were significant. Four parents had negative GCA estimates. Crosses with low SCA effects were also identified and their further use in breeding programme has been suggested.
- Published
- 2006
- Full Text
- View/download PDF
33. Development of a simple and genotype independent in vitro regeneration system in Sugarcane [Saccharum spp] using shoot apex explants
- Author
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P. L. Viswanathan, M. Shankar, M. Shanmuganathan, S. Ganesh Ram, and Venkatesan Thiruvengadam
- Subjects
0106 biological sciences ,0301 basic medicine ,Germplasm ,Vegetative reproduction ,Soil Science ,Organogenesis ,Plant Science ,lcsh:Plant culture ,multiple shoots ,01 natural sciences ,Saccharum ,Crop ,03 medical and health sciences ,chemistry.chemical_compound ,shoot apex ,sugarcane ,in vitro regeneration ,lcsh:SB1-1110 ,biology ,food and beverages ,biology.organism_classification ,Horticulture ,030104 developmental biology ,chemistry ,Shoot ,Kinetin ,Agronomy and Crop Science ,010606 plant biology & botany ,Explant culture - Abstract
Sugarcane (Saccharum spp) is commercially cultivated in Tamil Nadu for industrial purposes. Germplasm of this crop is mainly conserved in the form of clonal gene bank. For long term conservation of vegetatively propagated crops, cryo-preservation offers a promising approach which could be realized through a reliable and genotype independent tissue culture system. In the present study, two sugarcane genotypes namely Co 86032 and TN SC Si 7 were evaluated for their in vitro regeneration response through optimization of various factors influencing organogenesis. The results indicated that shoot apices explants inoculated on medium supplemented with 0.25 mg/l BAP + 5.0 mg/l kinetin + 0.05 mg/l NAA recorded highest shoot induction frequencies of 92.2% and 84.4% for Co 86032 and TN SC Si 7 respectively. On an average, 6 to 8 shoots were formed per explant. After 60 days of culture, single shoots were separated from the multiple shoots and transferred to the rooting medium. Among the different media tested, highest regeneration frequencies of 63.3% (Co 86032) and 56.6% (TN Sc Si 7) were found on medium supplemented with 5 mg/l NAA. Thus, a simple and genotype independent in vitro regeneration system was developed which could be well adopted for conservation of sugarcane germplasm in the cryo gene bank.
- Published
- 2018
- Full Text
- View/download PDF
34. 104 ROLE OF URGENT START PERITONEAL DIALYSIS IN ACUTE KIDNEY INJURY POST PEDIATRIC CARDIAC SURGERY
- Author
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Hamdan Leman, S.R. Daud, E.D. Omar, M. Shanmuganathan, AniSuraya, Irene Wong, and Bak Leong Goh
- Subjects
medicine.medical_specialty ,Nephrology ,business.industry ,medicine.medical_treatment ,medicine ,Acute kidney injury ,lcsh:Diseases of the genitourinary system. Urology ,lcsh:RC870-923 ,medicine.disease ,business ,Intensive care medicine ,Peritoneal dialysis ,Cardiac surgery - Published
- 2017
- Full Text
- View/download PDF
35. Central nervous system infection after Onyx embolisation of arterio-venous malformations in two paediatric patients
- Author
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H. Pulhorn, John C. Hartley, M. Shanmuganathan, Dominic Thompson, W Harkness, and C. H. Lee
- Subjects
Male ,medicine.medical_specialty ,Adolescent ,medicine.medical_treatment ,Central nervous system ,Arteriovenous Malformations ,Antibiotic therapy ,medicine ,Humans ,Dimethyl Sulfoxide ,Embolization ,Child ,Paediatric patients ,Central Nervous System Vascular Malformations ,business.industry ,General Medicine ,Embolization, Therapeutic ,Magnetic Resonance Imaging ,Infection rate ,Surgery ,medicine.anatomical_structure ,Pediatrics, Perinatology and Child Health ,Polyvinyls ,Neurology (clinical) ,Neurosurgery ,business - Abstract
Increasingly, Onyx is used for endovascular embolization of aneurysms and arterio-venous malformations. Although reports in the literature on the use of Onyx are favourable, there have been so far no reports on the central nervous system (CNS) infection rate after embolisation with Onyx and no recommendations as to the management of these infections. We present two cases of paediatric patients who acquired CNS infection with Pseudomonas aeruginosa after Onyx embolisation of AVMs and describe their subsequent management. Presence of established infection after Onyx embolisation should be dealt with by removal of infected material, administration of appropriate antibiotic therapy and supportive treatment.
- Published
- 2014
36. Evaluation of mid-late sugarcane clones for their yield and quality characters in advanced selection stage in plant and ratoon crops
- Author
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M. Shanmuganathan, V. Baskaran, and R. Chandrasekaran
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Brix ,biology ,business.industry ,fungi ,mid late maturing ,cane yield and sugar yield ,food and beverages ,Soil Science ,Plant Science ,lcsh:Plant culture ,biology.organism_classification ,Crop ,plant crop ,Pooled analysis ,Agronomy ,Agriculture ,Yield (wine) ,lcsh:SB1-1110 ,Cane ,business ,Sugar ,Sugar yield ,Agronomy and Crop Science ,ratoon - Abstract
Comparative performance of six mid late maturing sugarcane clones were tested along with two standards in Advanced Varietal Trial in three crop cycles viz., plant I, plant II and ratoon at Sugarcane Research Station, Tamil Nadu Agricultural University, Sirugamani. Cane yield, sugar yield and seven other attributing traits like number of millable canes, cane height, cane thickness, internode length, Brix %, Pol % and commercial cane sugar % (CCS %) were studied in every crop cycles. The data observed in all three crop cycles were analysed separately and finally the data were pooled to carry out a pooled analysis. Significant differences were noticed among the test clones and standards for cane yield, sugar yield and its contributing parameters in plant I, plant II, ratoon and pooled analysis. Among the six clones tested, two test clones viz., Si 2009-13 and Si 2009-33 recorded significantly higher cane yield in plant I, II, ratoon and pooled analysis. The clone Si 2009-13 recorded significantly higher sugar yield in plant II, ratoon and pooled analysis. Similarly, the test clone, Si 2009-33 recorded significantly higher sugar yield in plant I, II, ratoon and pooled analysis. These two clones also recorded significant performance in most of the characters studied in all crop cycles and pooled analysis. Hence, these two clones viz., Si 2009-13 and Si 2009-33 were selected and promoted to multi-location trial in various sugarcane research stations to judge the cane yield and sugar yield in diversified environment.
- Published
- 2017
- Full Text
- View/download PDF
37. Proximal migration of a lumbo-peritoneal shunt into a cerebellar peduncle
- Author
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I. R. Whittle, Peter Bodkin, and M. Shanmuganathan
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business.industry ,Posterior fossa ,General Medicine ,Anatomy ,Cerebrospinal Fluid Shunts ,Shunt (medical) ,Radiography ,Young Adult ,medicine.anatomical_structure ,Treatment Outcome ,Foreign-Body Migration ,Cerebellar peduncle ,Cerebellum ,medicine ,Humans ,Surgery ,Female ,Neurology (clinical) ,business ,Peritoneal Cavity - Abstract
We present dramatic images of a lumbo-peritoneal (LP) shunt that has migrated into the posterior fossa. We discuss its successful revision, and review previous reports of LP shunt migration.
- Published
- 2011
38. Regional and Global Dynamics in East Asia: A Data Mining Experience
- Author
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Subana Shanmuganathan and M. Shanmuganathan
- Subjects
Competitive intelligence ,Digital era ,business.industry ,Digital data ,computer.software_genre ,Unit (housing) ,Dynamics (music) ,Political science ,Business intelligence ,East Asia ,Data mining ,Macro ,business ,computer - Abstract
Data mining (DM) has almost become an essential tool in this digital era. Research into developing novel methodologies to mining the ever-growing data and applying them to analysing a wide range of issues has never been so vigorous. DM applications including that of business intelligence attest remarkable success. This paper elaborates upon such a DM experience on how macro economic digital data from multiple sources could be mined to discover interesting developments in the regional and global dynamics of an emerging East Asian Community (EAC). Following a brief introduction to the former Malaysian Prime Minster Mahathir Mohamed's initiatives to form an EAC, the World Bank and ASEAN Financial Macroeconomic Surveillance Unit data are analysed to see how the numbers stack up. The application gives an example of how the needs of a modern society, to model regional and global dynamics of nations of interest could be met using DM techniques and digital data.
- Published
- 2008
- Full Text
- View/download PDF
39. CARBON DIOXIDE AND ETHYLENE EVOLUTION RESULTING FROM USE OF LOW RATES OF 2-CHLOROETHYLPHOSPHONIC ACID (ETHREL) ON APPLE
- Author
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B. J. E. Teskey and M. Shanmuganathan
- Subjects
chemistry.chemical_compound ,2-chloroethylphosphonic acid ,Ethylene ,chemistry ,Carbon dioxide ,Plant Science ,Horticulture ,Agronomy and Crop Science ,Nuclear chemistry ,Electrochemical reduction of carbon dioxide - Abstract
not available
- Published
- 1971
- Full Text
- View/download PDF
40. AN IMPROVED GRAPHICAL AUTHENTICATION SYSTEM TO RESIST THE SHOULDER SURFING ATTACK
- Author
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M Shanmuganathan, R. Sudha
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