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Co-Authors
- M. Selvaraj
- D. Syamala
- M. V. Rao
- S. Velammal
- N. Radhika
- Vishal Anand
- G. Vijaya
- A. Manchula
- R. P. Ramkumar
- A. A. Haseena Thasneem
- R. Mehaboobathunnisa
- M. Mohammed Sathik
- K. Krishneswari
- J. Vijayakumar
- G. Balasundaram
- J. Gowrishankar
- C. Dinakaran
- D. Murugan
- K. RajalakshmiDepartment of CSE, Francis Xavier Engineering College
- T. I. Manish
- S. Ramareddy
- J. Suresh Suseela
- G. Ravichandran
- T. K. Nambinarayanan
- V. Ravichandran
- R. Manikandan
- C. Murugan
- J. Paulraj Joseph
- N. Veerapandiyah
- P. N. Ramachandran
- S. Sudhakara Reddy
- S. Ajay Kumar
- Madhubala T. Kadavarayar
- K. Asok Kumar
- G. Gnanasekaran
- G. V. S. Murthy
- V. J. Nair
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Journals
- Indian Forester
- Global Journal of Theoretical and Applied Mathematics Sciences
- Wireless Communication
- Software Engineering
- Biometrics and Bioinformatics
- ICTACT Journal on Image and Video Processing
- Indian Journal of Science and Technology
- AIRCC's International Journal of Computer Science and Information Technology
- International Journal of Advanced Networking and Applications
- The Journal of the Indian Mathematical Society
- Journal of Pure and Applied Ultrasonics
- Nelumbo - The Bulletin of the Botanical Survey of India
- Journal of the Ramanujan Mathematical Society
- Journal of Engineering Education Transformations
- Indian Welding Journal
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Arumugam, S.
- Growth and Productivity of AM Inoculated Tropical Tree Seedlings
Abstract Views :203 |
PDF Views:0
Authors
Source
Indian Forester, Vol 122, No 12 (1996), Pagination: 1161-1167Abstract
Container grown seedlings of tropical trees such as Acacia leucophloea, A. mangium, A. nilotica, Delonic regia, Derris indica and Tamarindus indica were inoculated with three arbuscular mycorrhizal fungi (AMF) viz. Glomus fasiculatum, G. mosseae and Gigaspora margarita. The growth responses ortbe seedlings such as height, ischolar_main eo1lar diameter, ischolar_main and shoot biomass were analysed. In addition, accumulation of phosphate in ischolar_main, stem and leaves was also analysed. It was observed that there was a differential efficiency in mycorrhizal colonization and the specificity of fungal symbionts to stimulate host to a significant growth response.
- Total Edge Domination in Graphs
Abstract Views :808 |
PDF Views:3
Authors
S. Velammal
1,
S. Arumugam
2
Affiliations
1 Department of Mathematics, Velammal College of Engineering and Technology, Viraganoor Madurai 625 009, IN
2 Core Croup Research Faculty (CGRF), National Centre for Advanced Research in Discrete Mathematics (n-CARDMATH) Kalasalingam University, Anand Nagar Krishnankoil-626 190, IN
1 Department of Mathematics, Velammal College of Engineering and Technology, Viraganoor Madurai 625 009, IN
2 Core Croup Research Faculty (CGRF), National Centre for Advanced Research in Discrete Mathematics (n-CARDMATH) Kalasalingam University, Anand Nagar Krishnankoil-626 190, IN
Source
Global Journal of Theoretical and Applied Mathematics Sciences, Vol 2, No 2 (2012), Pagination: 79-89Abstract
In this paper we discuss the concept of total edge domination in graphs. We prove that for any connected (p,q) - graph G with Δ ' < q − 1, γ <SUB>t</SUB> ' ≤ q − Δ ' where Δ ' denotes the maximum degree of an edge in G and characterize trees and unicyclic graphs which attain this bound. We also prove that γ<SUB>t</SUB> ' (S(G)) ≤2( p−β1) for any connected graph G. We also determine the value of total edge domatic number d<SUB>t</SUB> for some families of graphs.Keywords
Edge Domination Number, Total Edge Domination NumberReferences
- F. Harary, Graph Theory, Addison Wesley Reading Mass(1972).
- E.J. Cockayne, R.M. Dawes and S.T. Hedetnicni, Total domination in graphs, Networks 10(1980) 211-219.
- S. Arumugam and J. Paulraj Joseph, Domination in subdivision graph, J. Indian.math.soc.62(1-4)(1996) 274-282.
- A Cross-Layer Context Aware Middleware Architecture for Ad Hoc Wireless Networks
Abstract Views :302 |
PDF Views:2
Authors
Affiliations
1 Department of Computer Science, Amrita School of Engineering, Coimbatore, IN
2 Department of Computer Science,College at Brockport, State University of New York, SUNY, US
3 Nandha Engineering College, Erode, IN
1 Department of Computer Science, Amrita School of Engineering, Coimbatore, IN
2 Department of Computer Science,College at Brockport, State University of New York, SUNY, US
3 Nandha Engineering College, Erode, IN
Source
Wireless Communication, Vol 1, No 1 (2009), Pagination: 1-7Abstract
Is work we design a reflective context aware middleware for interoperability of protocols in adhoc smart spaces. The middleware is termed reflective since many context and services may be added to it simultaneously at any instant of time. Context typically refers to three different aspects – the environment, activity and location of the user. The profile of the user is sensed by sensor nodes, and depending on the profile appropriate services are offered to the user.
Smart spaces may consist of various heterogeneous mobile devices, sensors, atteuators, smart and dummy nodes. The context aware middleware is designed in the middleware layer – a new layer between the routing and the transport layer. All the nodes in the smart space are mobile and the middleware provides the functionality of interoperability. Seamless interoperability is obtained among the service discovery protocols in the middleware. The service discovery protocols considered in our work are Pervasive Discovery Protocol (PDP), Service Location Protocol (SLP) and the Universal plug and play Protocols (UPnP).
Our middleware design is efficient since it does not use any interfaces or plug-ins. Interoperation makes all services in different smart spaces available seamlessly to the user irrespective of the location. The middleware can serve multiple users simultaneously on varying and fixed context at the same time. To test the feasibility and efficiency of our proposed design, we simulate the middleware and its various components in a mobile adhoc environment under various network conditions using the network simulator NS-2.
Keywords
Interoperability, Middleware, Smart Space, Context Aware, Service Discovery, Adhoc Networks.- Applicability of Control Charts in Software Processes
Abstract Views :147 |
PDF Views:1
Authors
G. Vijaya
1,
S. Arumugam
2
Affiliations
1 Department of Information Technology, KGiSL Institute of Technology, Coimbatore, IN
2 Nandha Engineering College, Erode, IN
1 Department of Information Technology, KGiSL Institute of Technology, Coimbatore, IN
2 Nandha Engineering College, Erode, IN
Source
Software Engineering, Vol 2, No 7 (2010), Pagination: 126-131Abstract
The application of Statistical Process Control (SPC) to software processes has been a challenging issue for software engineers and researchers. Although SPC is suggested for providing process control and achieving higher process maturity levels, there are very few resources that describe success stories and implementation details for applying SPC to specific metrics. In this research work, the applicability of SPC to software processes, in particular to software metrics is analyzed and the results after applying SPC to the various processes of software are presented. Control charts, the most sophisticated tools of SPC [13], is used for the purpose of analysis.Keywords
Capability Maturity Model (CMM), U-Chart, Defect Density Metrics.- Applicability of Control Charts in Software Processes
Abstract Views :146 |
PDF Views:1
Authors
G. Vijaya
1,
S. Arumugam
2
Affiliations
1 Department of Information Technology, KGiSL Institute of Technology, Coimbatore, IN
2 Nandha Engineering College, Erode, IN
1 Department of Information Technology, KGiSL Institute of Technology, Coimbatore, IN
2 Nandha Engineering College, Erode, IN
Source
Software Engineering, Vol 1, No 5 (2009), Pagination: 164-169Abstract
The application of Statistical Process Control (SPC) to software processes has been a challenging issue for software engineers and researchers. Although SPC is suggested for providing process control and achieving higher process maturity levels, there are very few resources that describe success stories and implementation details for applying SPC to specific metrics. In this research work, the applicability of SPC to software processes, in particular to software metrics is analyzed and the results after applying SPC to the various processes of software are presented. Control charts, the most sophisticated tools of SPC [13], is used for the purpose of analysis.Keywords
Capability Maturity Model (CMM), U-Chart, Defect Density Metrics.- Utilization of SPC and Control Charts to Software Development Processes
Abstract Views :155 |
PDF Views:2
Authors
G. Vijaya
1,
S. Arumugam
2
Affiliations
1 Department of Information Technology, KGiSL Institute of Technology, Coimbatore, IN
2 Nandha Engineering College, Erode, IN
1 Department of Information Technology, KGiSL Institute of Technology, Coimbatore, IN
2 Nandha Engineering College, Erode, IN
Source
Software Engineering, Vol 1, No 7 (2009), Pagination: 230-239Abstract
The application of Statistical Process Control (SPC) to software processes has been a challenging issue for software engineers and researchers. Although SPC is suggested for providing process control and achieving higher process maturity levels, there are very few resources that describe success stories and implementation details for applying SPC to specific metrics. In this research work, SPC is applied to software metrics and the results after applying SPC to the various processes of software is presented. Control charts, the most sophisticated tools of SPC, is used for the purpose of analysis. The difficulties in application of Statistical Process Control to a software organization are observed by using the existing data of defect density, rework percentage, productivity and review performance metrics and relevant suggestions are provided for dealing with them.Keywords
Statistical Process Control, Control Charts, Control Metrics, Quality Management, Software Processes.- Applicability of Control Charts in Software Processes
Abstract Views :160 |
PDF Views:1
Authors
G. Vijaya
1,
S. Arumugam
2
Affiliations
1 Department of Information Technology, KGiSL Institute of Technology, Coimbatore, IN
2 Nandha Engineering College, Erode, IN
1 Department of Information Technology, KGiSL Institute of Technology, Coimbatore, IN
2 Nandha Engineering College, Erode, IN
Source
Software Engineering, Vol 1, No 2 (2009), Pagination: 38-43Abstract
The application of Statistical Process Control (SPC) to software processes has been a challenging issue for software engineers and researchers. Although SPC is suggested for providing process control and achieving higher process maturity levels, there are very few resources that describe success stories and implementation details for applying SPC to specific metrics. In this research work, the applicability of SPC to software processes, in particular to software metrics is analyzed and the results after applying SPC to the various processes of software are presented. Control charts, the most sophisticated tools of SPC [13], is used for the purpose of analysis.Keywords
Capability Maturity Model (CMM), U-Chart, Defect Density Metrics.- Robust Facial Data Recognition using Multimodal Fusion Features in Multi-Variant Face Acquisition
Abstract Views :161 |
PDF Views:2
Authors
Affiliations
1 Nanda College of Technology, IN
1 Nanda College of Technology, IN
Source
Biometrics and Bioinformatics, Vol 5, No 1 (2013), Pagination: 25-28Abstract
Biometric use physiological traits such as fingerprints, face and behavioral traits such as voice, hand signatures characteristics to verify an individual’s identity. The two process involved in biometrics are verification and identification. Verification process is performed by matching an individual’s biometric with the template of claimed identity only. The identification process performed by matching an individual’s biometric with template of every identity in the database. Existing work presented a multimodal (2D and 3D) face recognition algorithm by way of performing hybrid matching which was based on both feature and holistic metrics. The Pose of 3D face and its texture corrected using single automatically detected point and hotelling transform. 3D Spherical Face Representation (SFR) is used in conjunction with Scale-Invariant Feature Transform (SIFT) descriptor which results in formation of a rejection classifier. It quickly eliminates a large number of candidate faces at an early stage for efficient recognition for known faces as attributes. Our proposed work presented a Feature Based Multimodality Face Recognition System to recognize the human individuals in environment of known faces using features like shape of the eyes, nose and jaw. Case study and preliminary experimental results conducted in Mat lab proves to be a viable approach using multimodality method based on 2D and 3D facial representation for known faces. Facial recognition rate is measured in terms of validation index generated for false acceptance rate, false rejection rate.Keywords
Biometrics, Face Recognition, Spherical Face Representation, SIFT.- Absolute Pupil and Iris Segmentation Using Reverse Function
Abstract Views :163 |
PDF Views:2
Authors
Affiliations
1 Mahendra Institute of Technology, Mahendhirapuri (W), Namakkal, IN
2 Nandha Educational Institutions, Erode, IN
1 Mahendra Institute of Technology, Mahendhirapuri (W), Namakkal, IN
2 Nandha Educational Institutions, Erode, IN
Source
Biometrics and Bioinformatics, Vol 4, No 8 (2012), Pagination: 348-354Abstract
In order to provide competent and successful iris recognition, iris localization plays a major role. In this proposed method, pupil localization is done by using scaling, reverse function and four neighbours method so that irrespective of pupil‟s contour, either circle or ellipse, the pupil‟s boundary is detected accurately. For iris outer boundary detection, contrast enhancement, special wedges and thresholding techniques are used to isolate the specific iris regions without eyelid and eyelash occlusions. Upon completing the above phases, experimental result shows that, pupil and iris boundaries are detected 100% perfectly.Keywords
Contrast Enhancement, Neighborhood Method, Iris Localization, Iris Segmentation, Thresholding.- Comparison of Different Segmentation Algorithms for Dermoscopic Images
Abstract Views :166 |
PDF Views:0
Authors
Affiliations
1 Department of Computer Science, Sadakathullah Appa College, IN
2 Nandha Engineering College, IN
1 Department of Computer Science, Sadakathullah Appa College, IN
2 Nandha Engineering College, IN
Source
ICTACT Journal on Image and Video Processing, Vol 5, No 4 (2015), Pagination: 1030-1036Abstract
This paper compares different algorithms for the segmentation of skin lesions in dermoscopic images. The basic segmentation algorithms compared are Thresholding techniques (Global and Adaptive), Region based techniques (K-means, Fuzzy C means, Expectation Maximization and Statistical Region Merging), Contour models (Active Contour Model and Chan - Vese Model) and Spectral Clustering. Accuracy, sensitivity, specificity, Border error, Hammoude distance, Hausdorff distance, MSE, PSNR and elapsed time metrices were used to evaluate various segmentation techniques.Keywords
Thresholding, Expectation Maximization, Contour Models, Dermoscopy, Spectral Clustering.- Intramodal Feature Fusion Based on PSO for Palmprint Authentication
Abstract Views :166 |
PDF Views:0
Authors
Affiliations
1 Department of Computer Science and Engineering, Tamilnadu College of Engineering, IN
2 Nandha Educational Institutions, IN
1 Department of Computer Science and Engineering, Tamilnadu College of Engineering, IN
2 Nandha Educational Institutions, IN
Source
ICTACT Journal on Image and Video Processing, Vol 2, No 4 (2012), Pagination: 435-440Abstract
Palmprint recognition has attracted various researchers in recent years due to its richness in amount of features. In feature extraction, the single feature has become bottleneck in producing high performance. To solve this we propose an intramodal feature fusion for palmprint authentication. The proposed system extracts multiple features like Texture (Gabor), and Line features from the preprocessed palmprint images. The feature vectors obtained from different approaches are incompatible and also the features from same image may be redundant. Therefore, we propose a Particle Swarm Optimization (PSO) based technique to perform feature fusion on extracted features. Being an iterative technique that randomly optimizes the fused feature space, it overcomes the problems of feature fusion. Finally the feature vector is further reduced using Principal Component Analysis (PCA) and matched with stored template using NN classifier. The proposed approach is validated for their efficiency on PolyU palmprint database of 200 users. The experimental results illustrates that the feature level fusion improves the recognition accuracy significantly.Keywords
Biometrics, Palmprint, Feature Fusion, PSO, Intramodal.- Foot Rot Disease Identification for Vellaikodi Variety of Betelvine Plants Using Digital Image Processing
Abstract Views :171 |
PDF Views:0
Authors
Affiliations
1 Department of Electronics and Communication Engineering, Nandha College of Technology, IN
2 Nandha Engineering College, IN
1 Department of Electronics and Communication Engineering, Nandha College of Technology, IN
2 Nandha Engineering College, IN
Source
ICTACT Journal on Image and Video Processing, Vol 3, No 2 (2012), Pagination: 495-501Abstract
Betelvine plants are infected variety of diseases in the complete plantation without any premature warning of the diseases. The aim of this paper is to detection of foot rot disease in the vellaikodi variety of betelvine plants using digital image processing techniques. The digital images of the uninfected or normal betelvine leaves and the digital images of the infected in foot rot diseased betelvine leaves at different stages are collected from different Betelvine plants using a high resolution digital camera and collected betelvine images are stored with JPEG format. The digital images of the betelvine leaves analyses are done using the image processing toolbox in MATLAB which gives the normal patterns of the digital images. Using RGB encoding process, the RGB components of the betelvine leaves are separated. The mean and median values for all sample leaves are computed and calculated values are stored in the system. The mean and median values of test leaves are computed and compared with the stored values. As the result of this comparison, it is identified whether test leaves are affected by foot rot disease or not. Finally this analysis helps to recognize the foot rot disease can be identified before it spreads to entire crop.Keywords
Betelvine, Foot Rot Disease and Phytophthora Parasitica.- A New Topology for Regulation of Active Power by Battery Storage System with Cascaded Multilevel Inverter using Three Phase System
Abstract Views :179 |
PDF Views:0
Authors
Affiliations
1 Department of EEE, St. Peter’s University, Avadi, Chennai - 600054, Tamil Nadu, IN
2 Department of EEE, GRT Institute of Engineering and Technology, Tiruttani - 631209, Tamil Nadu, IN
3 Department of EEE, Sastra University, Thanjavur - 613401, Tamil Nadu, IN
4 Department of EEE, S. V. C. E. T, Chittoor - 627855, Andhra Pradesh, IN
1 Department of EEE, St. Peter’s University, Avadi, Chennai - 600054, Tamil Nadu, IN
2 Department of EEE, GRT Institute of Engineering and Technology, Tiruttani - 631209, Tamil Nadu, IN
3 Department of EEE, Sastra University, Thanjavur - 613401, Tamil Nadu, IN
4 Department of EEE, S. V. C. E. T, Chittoor - 627855, Andhra Pradesh, IN
Source
Indian Journal of Science and Technology, Vol 9, No 22 (2016), Pagination:Abstract
The battery plays a major role for energy storage in non conventional energy systems. This paper proposed an AC-DCAC converter using Pulse Width Modulation Technique for Multilevel inverter. Normally the voltage drop increases when the load increases. Because the load voltages are consume more than the source voltages. To overcome this problem, the battery energy depot system is linked to the converter for controlling the active power. The performance of the proposed topology is a present active power regulates in battery energy depot scheme has been verified by simulation MATLAB/SIMULINK environment.Keywords
Cascade Multilevel Converter, Energy Storage System, PWM Technique, Phase Shifting Transformer, Smart Grid.Full Text
- Performance Evaluation of Face Recognition Using Gabor Filter, Log Gabor filter and Discrete Wavelet Transform
Abstract Views :243 |
PDF Views:180
Authors
D. Murugan
1,
S. Arumugam
2,
K. RajalakshmiDepartment of CSE, Francis Xavier Engineering College
3,
T. I. Manish
1
Affiliations
1 Department of CSE, Manonmaniam Sundaranar University, IN
2 Nandha College of Engineering and Technology, Erode, IN
3 Department of CSE, Francis Xavier Engineering College, IN
1 Department of CSE, Manonmaniam Sundaranar University, IN
2 Nandha College of Engineering and Technology, Erode, IN
3 Department of CSE, Francis Xavier Engineering College, IN
Source
AIRCC's International Journal of Computer Science and Information Technology, Vol 2, No 1 (2010), Pagination: 125-133Abstract
The face recognition problem is made difficult by the great variability in head rotation and tilt, lighting intensity and angle, facial expression, aging, partial occlusion (e.g. Wearing Hats, scarves, glasses etc.), etc. The Eigenfaces algorithm has long been a mainstay in the field of face recognition and the face space has high dimension. Principal components from the face space are used for face recognition to reduce dimensionality. A multiscale representation for face recognition is done to preserve the discriminant information prior to dimensionality reduction. In this paper, three multiscale representation techniques Gabor filter; Log Gabor filter and Discrete Wavelet Transform are applied prior to dimensionality reduction. PCA is then applied on the above techniques to find the face recognition accuracy rate and to compare the results of the three methods with PCA method. The approximation coefficients in discrete wavelet transform is extracted and it is used to compute the face recognition accuracy instead of using all the coefficients.Keywords
Eigenfaces, Face Space, Gabor Filter, Principal Components, Multiscale, Log Gabor Filter.Full Text
- A New Method of APWM Resonant Inverter Topology for High Frequency AC Power Distribution Systems
Abstract Views :154 |
PDF Views:0
Authors
S. Arumugam
1,
S. Ramareddy
2
Affiliations
1 Bharath University, Chennai, IN
2 Jerusalem College of Engg, Chennai, IN
1 Bharath University, Chennai, IN
2 Jerusalem College of Engg, Chennai, IN
Source
International Journal of Advanced Networking and Applications, Vol 2, No 5 (2011), Pagination: 846-853Abstract
In this paper, an asymmetrical pulse-width-modulated (APWM) resonant inverter topology is presented for high frequency ac power distribution systems. The inverter system is comprised of simple power and control circuitry. The detailed analysis shows that the proposed inverter has very low total harmonic distortion, near-zero switching losses, and fast transient response. Open loop and Closed loop Simulation results are presented to prove the performance of the proposed inverter.Keywords
APWM, High Frequency, Resonant Inverter, Harmonic Distortion, PWM Topology.Full Text
- Geodesic Graphoidal Covering Number of a Graph
Abstract Views :187 |
PDF Views:0
Authors
Affiliations
1 Arulmigu Kalasalingam College o f Engineering, Krishnankoil-626 190, IN
2 Department of Mathematics, St. John’s College Tirunelveli-627 002, IN
1 Arulmigu Kalasalingam College o f Engineering, Krishnankoil-626 190, IN
2 Department of Mathematics, St. John’s College Tirunelveli-627 002, IN
Source
The Journal of the Indian Mathematical Society, Vol 72, No 1-4 (2005), Pagination: 99-106Abstract
A geodesic graphical cover of a graph G is a collection ψ of shortest paths in G such that every path in ψ has at least two vertices, every vertex of G is an internal vertex of at most one path in ψ and every edge of G is in exactly one path in ψ. The minimum cardinality of a geodesic graphical cover of G is called the geodesic graphical covering number of G and is denoted by ηg. In this paper, we determine ηg for several classes of graphs. We also prove that ηg≥[q/d(G)] where d(G) is the diameter of G and characterize some classes o f graphs which attain this bound.Keywords
Graphoidal Cover, Acyclic Graphoidal Cover, Geodcsic Graphoidal Cover.- Ultrasonic Velocity and Absorption Studies on Some Amino Acids in Water-Aprotic Solvent Mixtures
Abstract Views :164 |
PDF Views:0
Authors
Affiliations
1 P.G & Research Department of Physics, A. A. Government Arts College, Villupuram-605602, Tamilnadu, IN
2 Department of Physics, Shanmuga Industries Arts and Science College, Tiruvannamalai, Tamilnadu, IN
3 Department of Physics, Pondicherry University, Kalapet, Puducherry-14, IN
1 P.G & Research Department of Physics, A. A. Government Arts College, Villupuram-605602, Tamilnadu, IN
2 Department of Physics, Shanmuga Industries Arts and Science College, Tiruvannamalai, Tamilnadu, IN
3 Department of Physics, Pondicherry University, Kalapet, Puducherry-14, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 34, No 1 (2012), Pagination: 17-21Abstract
Ultrasonic velocity and absorption studies have been carried out in the amino acids namely glycine and β-alanine in Water-dioxane, Water-tetrahydrofuran and Water-dimethylformamide mixed solvents. These studies are carried out in the amino acid concentration range of 0.1 to 0.8 molar at a fixed frequency of 5 MHz and at a fixed temperature of 303 K. The ultrasonic velocity in aqueous solutions of amino acids containing 10% V/V of dioxane, tetrahydrofuran and dimethylformamide increases non-linearly with increase of concentration of amino acids. The non-linear increase in ultrasonic velocity is explained on the basis of ionic hydration, hydrogen bonding and the structure breaking power of various aprotic solvents used. The observed absorption has been explained as due to ionic hydration, weakening of hydrogen bonds and proton transfer reactions occurring in these solutions.Keywords
Ultrasonic Velocity, Ionic Hydration, Proton Transfer, Ultrasonic Absorption.Full Text
- Rediscovery and Lectotypification of Drypetes porteri (Putranjivaceae: Phyllanthoideae: Drypeteae), A Narrow Endemic and Endangered Species of the Western Ghats, India
Abstract Views :279 |
PDF Views:148
Authors
Affiliations
1 Botanical Survey of India, Southern Regional Centre, Lawley Road Post, TNAU Campus, Coimbatore – 641 003, Tamil Nadu, IN
1 Botanical Survey of India, Southern Regional Centre, Lawley Road Post, TNAU Campus, Coimbatore – 641 003, Tamil Nadu, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 60, No 1 (2018), Pagination: 10-12Abstract
Drypetes porteri (Gamble) Pax & K. Hoffm. is rediscovered after type collection (121 years) from type locality from Megamalai Wildlife Sanctuary, southern Western Ghats, Tamil Nadu, India. Lectotypification, brief description amended with fruit morphology and colour photographs are provided here for easy identification.Keywords
Drypetes, Endemic, Lectotype, Megamalai.Full Text
References
- CHAKRABARTY T. AND N.P. BALAKRISHNAN 2012. Drypeteae (Griseb.) Hurus. In: Balakrishnan, N.P. Chakrabarty, T., Sanjappa, M., Lakshminarasimhan, P., Singh, P. (eds.), Flora of India. vol. 23. Botanical Survey of India: Kolkata, 391–405.
- CHAKRABARTY T, M. GANGOPADHYAY AND N.P. BALAKRISHNAN 1997. The genus Drypetes (Euphorbiaceae) in the Indian subcontinent. Journal of Economic and Taxonomic Botany 21 (2): 251–280.
- FORSTER P.I. 1997. A taxonomic revision of Drypetes Vahl. (Euphorbiaceae) in Australia Austrobaileya 4(4): 477−494.
- GAMBLE J.S. 1901. Hemicylea porteri, Euphorbiaceae, Tribe Phyllantheae. Hooker’s Icon. Pl. 28: t. 2701. 1901 GAMBLE J.S. 1925. Flora of the Presidency of Madras. Adlardand Sons, London, 2: 910.
- IUCN 2014. Standards and Petitions Subcommittee Guidelines for Using the IUCN Red List Categories and Criteria. Version 11. Prepared by the Standards and Petitions Subcommittee. www.iucnredlist.org/documents/RedListGuidelines.pdf (20-03-2018)
- KRISHNA G, K. KARTHIGEYAN, W. ARISDASON AND T. CHAKRABARTY 2017. A new species of Drypetes (Putranjivaceae/Euphorbiaceaes. S.l.) from West Bengal, India. Phytotaxa 319(3): 271–276. http://dx.doi.org/10.11646/phytotaxa.319.3
- LEVIN G.A. 2013. A synopsis of the New World species of Drypetes section Drypetes (Putranjivaceae) with asymmetrical fruits, including description of a new species. PhytotKeys 29: 75–87. https://doi.org/10.3897/ phytokeys.29.6004
- MATHEW S.P. AND T. CHAKRABARTY 1990. A new Drypetes Vahl (Euphorbiaceae) from South Andaman Island. Journal of Economic and Taxonomic Botany 14(3): 623–625.
- MCNEILL J, F.R. BARRIE, W.R. BUCK, V. DEMOULIN, W. GREUTER, D.L. HAWKSWORTH, P.S. HERENDEEN, S. KNAPP, K. MARHOLD, J. PRADO, W.F. PRUD’HOMME VAN REINE, G.F. SMITH, J.H. WIERSEMA AND N.J. TURLAND 2012. International Code of Nomenclature for algae, fungi, and plants. Melbourne Code. Adopted by the Eighteenth International Botanical Congress Melbourne, Australia, July 2011 [Regnum Vegetabile 154]. Gantner, Ruggell. 240.
- PAX F. AND K. HOFFMANN 1922. EuphorbiaceaePhyllanthoideae-Phyllantheae. In: Engler, A.G.H. & Prantl, (eds.), Das Pflanzenreich, IV, 147 XV (Heft 81). Wilhelm Engelmann, Berlin. 1–349
- VAHL M. 1807. Eclogaeamericanae, seu, scriptiones plantarum praesertim Americaemeridionalis, nondumcognitarum. Impensis Auctoris, Havniae. 49
- WEBSTER G.L. 1994. Synopsis of the genera and suprageneric taxa of Euphorbiaceae. Annals of the Missouri Botanical Garden. 81: 33–144.
- On The Connected Domatic Number of A Graph
Abstract Views :141 |
PDF Views:0
Authors
Affiliations
1 Central Prison Palayamkottal - 627 002, IN
2 Department of Mathematics, Manonmaniam Sundaranar University, Tirunelveli - 627 009, IN
1 Central Prison Palayamkottal - 627 002, IN
2 Department of Mathematics, Manonmaniam Sundaranar University, Tirunelveli - 627 009, IN
Source
Journal of the Ramanujan Mathematical Society, Vol 9, No 1 (1994), Pagination: 69-77Abstract
The connected domatic number dc of a graph G = (V, E) is the maximum order of a partition of V into connected dominating sets in G. In this paper we prove that for any graph G such that both G and G are connected, dc+d≤p-2 and characterize the class of graphs for which equality holds.Keywords
Connected Domination, Connected Domatic Number, Perfect Domi Nation.- On k-Balanced Graphs
Abstract Views :159 |
PDF Views:0
Authors
Affiliations
1 Department of Mathematics, A.V.V.M. Sri Pushpam College Poondi - Thanjavur -613 503, IN
2 Department of Mathematics A.V.V.M. Sri Pushpam College Poondi, Thanjavur - 613 503, IN
3 Department of Mathematics, St. John's College Palayamkottal - 627 002, IN
1 Department of Mathematics, A.V.V.M. Sri Pushpam College Poondi - Thanjavur -613 503, IN
2 Department of Mathematics A.V.V.M. Sri Pushpam College Poondi, Thanjavur - 613 503, IN
3 Department of Mathematics, St. John's College Palayamkottal - 627 002, IN
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Journal of the Ramanujan Mathematical Society, Vol 6, No 1-2 (1991), Pagination: 1-8Abstract
For a nonnegative integer k, a graph G = (V, E) with | V( G)| > k ( k + 1 ) / 2 is defined to be k - balanced if {| E ( H ) | / (| V ( H) | - k)} ≤ {| E ( G) | / ( | V ( G ) | - k)} for every subgraph H of G with |V ( H) | > k. When k = 0 and 1 this coincides with balanced graphs of Erd6s and Renyi and strongly balanced graphs of Rucinski and Vince, respectively. In this paper we investigate some properties of k - balanced graphs. Given, any two integers p and q with suitable- Online Examinations to Undergraduate Engineering Students: A Case Study in an Autonomous Institution
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Authors
Affiliations
1 Department of Mechanical Engineering, Malla Reddy Engineering College (Autonomous), Secunderabad – 500100, IN
2 Department of EEE, Malla Reddy Engineering College (Autonomous), Secunderabad – 500100, IN
3 Department of CSE, Malla Reddy Engineering College (Autonomous), Secunderabad – 500100, IN
1 Department of Mechanical Engineering, Malla Reddy Engineering College (Autonomous), Secunderabad – 500100, IN
2 Department of EEE, Malla Reddy Engineering College (Autonomous), Secunderabad – 500100, IN
3 Department of CSE, Malla Reddy Engineering College (Autonomous), Secunderabad – 500100, IN
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Journal of Engineering Education Transformations, Vol 32, No 2 (2018), Pagination: 61-66Abstract
Undergraduate engineering students are vital part of any University / Institution and the institution should be in a position to show the good direction to them so that they will be placed in the good companies. The campus Recruitment procedure is based on, in-depth knowledge in the subjects and conducted through on line examinations. The conventional examinations based on pen and paper will not give the experience of an online examination. To overcome this drawback the autonomous institutions like ours have introduced the system of online examinations. The case study shows better results in the students' community in the online examination. This will help the students to face the placement drives in a better way in the future.Keywords
Online Examinations, Results, Placements and Institution- Study of Dynamic Resistance Based Controllers for Resistance Spot Welding Process
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Authors
Affiliations
1 Department of Physics, Regional Engineering College, Tiruchirappalli - 620015, IN
2 Welding Research Institute, Bharat Heavy Electricals Ltd., Tiruchirappalli - 620014, IN
3 Department of Physics, Bharathidasan University, Tiruchirappalli - 620024, IN
1 Department of Physics, Regional Engineering College, Tiruchirappalli - 620015, IN
2 Welding Research Institute, Bharat Heavy Electricals Ltd., Tiruchirappalli - 620014, IN
3 Department of Physics, Bharathidasan University, Tiruchirappalli - 620024, IN
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Indian Welding Journal, Vol 34, No 3 (2001), Pagination: 32-38Abstract
This work deals with the study of dynamic resistance based controllers namely 1) Proportional Integral Controller and 2) Fuzzy Logic Controller. These two controllers were tested under different external disturbances. All welds were performed on 1 mm to 1mm low carbon steel sheets. The relevant data were collected and the behavior of the dynamic resistance was studied. Destructive tests were performed on the welded samples to measure the strength of the welds. The test results show that the controllers based on dynamic resistance produced good welds even under external disturbances.Keywords
Resistance Spot Welding, PI Controller, Fuzzy Logic Controller, Dynamic Resistance and Low Carbon Steel.- Studies on the Taxonomic Significance of Leaf Microhairs of Subtribe Sporobolinae, Poaceae
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Authors
Affiliations
1 Botanical Survey of India, Southern Regional Centre, TNAU Campus, Lawley Road PO., Coimbatore – 641003, Tamil Nadu, IN
1 Botanical Survey of India, Southern Regional Centre, TNAU Campus, Lawley Road PO., Coimbatore – 641003, Tamil Nadu, IN
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Nelumbo - The Bulletin of the Botanical Survey of India, Vol 60, No 2 (2018), Pagination: 141-147Abstract
In grass systematics, leaf epidermal features are very significant for classifying the difficult groups, within subfamilies and tribes. But the micromorphological studies on grasses are very limited. Therefore, foliar micromorphological characters for 24 taxa of the subtribe Sporobolinae Benth. (Poaceae) from India have been studied by using Scanning Electron Microscope (SEM) in detail and the surface features were documented. All the 24 taxa studied were found to have three types of surface features, one of the most useful characters to delimit the species and genera in the subtribe. Besides microhairs, macrohairs, intercostal silica bodies, hooks and prickles were also studied.Keywords
Poaceae, Sporobolinae, Microhairs, Silica Bodies, India.Full Text
References
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- Current Taxonomic Status of Three Coastal Endemic Species of Acacia s.l. (Fabaceae: Mimosoideae) in Tamil Nadu, India
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Authors
Affiliations
1 Research & Development Centre, Bharathiar University, Coimbatore – 641046, Tamil Nadu, IN
2 Botanical Survey of India, Southern Regional Centre, Coimbatore – 641 003, Tamil Nadu, IN
3 CAS in Marine Biology, Annamalai University, Parangipettai – 608502, Tamil Nadu, IN
1 Research & Development Centre, Bharathiar University, Coimbatore – 641046, Tamil Nadu, IN
2 Botanical Survey of India, Southern Regional Centre, Coimbatore – 641 003, Tamil Nadu, IN
3 CAS in Marine Biology, Annamalai University, Parangipettai – 608502, Tamil Nadu, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 62, No 1 (2020), Pagination: 4-11Abstract
This paper deals with three endemic species occurring in Tamil Nadu, viz. Acacia bolei R.P. Subhedar, A. pseudowightii Thoth. and A. tanjorensis Ragup. & al., all three originally recorded from coasts. As the irst species has been declared extinct, detailed accounts with regard to accepted names, synonymy and characteristic features of the remaining two species are provided and discussed in detail. Acacia minutifolia Ragup. & al., replaced by A. pseudowightii Thoth., is now treated conspeci ic with Vachellia eburnea (L.f.) P.J.H. Hurter & Mabb., distributed in Indian Subcontinent extending to Iran & Oman. Senegalia tanjorensis (Ragup. & al.) Kottaimuthu is found closely related with S. mellifera (Vahl) L.A. Silva & J Freitas subsp. mellifera and both are likely to be merged with further studies. The importance of Version of Record in publications is also highlighted using the names Senegalia tanjorensis (Ragup. & al.) A.S. Deshpande & Maslin (2019) Vs Senegalia tanjorensis (Ragup & al.) Kottaimuthu (2019). All these three taxa are added here to the strand lora of India.Keywords
Acacia tanjorensis, A. minutifolia, A. bolei, Vachellia, Senegalia, Nomenclature, Version of Record.Full Text
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Authors
Affiliations
1 Botanical Survey of India, Southern Regional Centre, TNAU Campus, Lawley Road, Coimbatore – 641003, Tamil Nadu, IN
1 Botanical Survey of India, Southern Regional Centre, TNAU Campus, Lawley Road, Coimbatore – 641003, Tamil Nadu, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 62, No 1 (2020), Pagination: 16-26Abstract
The caryopses morphology of 16 taxa out of 18 taxa of Sporobolus (Poaceae) found in India is examined under Optical and Scanning Electron Microscopes. The macro- and micro-morphological characters such as shape, size, thickness (in cross section), embryo percentage, colour and surface testa ornamentation pattern were critically analysed to evaluate their taxonomic significance in the delimitation and identification of each taxon. Further, a bracketed dichotomous taxonomic key is provided here based on caryopses morphology to facilitate precise identification.Keywords
Caryopses, Morphology, Sporobolus, Poaceae, India.Full Text
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