Faculty of Science: Recent submissions

Now showing items 421-440 of 655

The effect of surface roughness of substrates on the performance of polycrystalline cadmium sulfide/cadmium telluride solar cells

Balashangar, K.; Thanihaichelvan, M.; Ravirajan, P.; Mahanama, G.D.K.; Dissanayake, M.A.K.L.; Colegrove, E.; Dhere, R.G.; Sivananthan, S. (Journal of Nanoelectronics and Optoelectronics, 2015-08)

The cadmium sulfide (CdS)/cadmium telluride (CdTe) heterojunction is a promising material combination for the development of cost efficient solar cells to meet the world's future energy demand. This study examined the ...
Effect of interface modifiers on hole mobility in Hybrid Nanoporous Titanium dioxide (TiO2) / Poly(3-hexylthiophene) (P3HT) solar cells

Prashanthan, K; Thivakarasarma, T; Balashankar, K.; Ravirajan, P. (IEEE-NANO 2015 - 15th International Conference on Nanotechnology, 2015-07)

This study focuses on influence of interface modifiers on hole mobility in Hybrid Nanoporous Titanium dioxide (TiO2) / Poly(3-hexylthiophene) (P3HT) nanocomposite by using time of flight technique. We found that the ...
Cadmium sulfide interface layer for improving the performance of titanium dioxide/poly (3-hexylthiophene) solar cells by extending the spectral response

Thanihaichelvan, M.; Sockiah, K.; Balashangar, K.; Ravirajan, P. (Journal of Materials Science: Materials in Electronics, 2015-06)

This work focused on studying the effect of cadmium sulfide (CdS) interfacial layer on the performance of titanium dioxide (TiO2)/poly (3-hexylthiophene) (P3HT) solar cells and finding out its effect on charge recombination ...
Controlling recombination kinetics of hybrid poly-3-hexylthiophene (P3HT)/titanium dioxide solar cells by self-assembled monolayers

Loheeswaran, S; Thanihaichelvan, M; Ravirajan, P.; Nelson, J (Journal of Materials Science: Materials in Electronics, 2017-03)

Self-assembled monolayers (SAMs) of benzoic acid based molecules are used to modify the metal oxide–polymer interface in a hybrid poly-3-hexylthiophene (P3HT)/TiO2 photovoltaic device structure. The effect of SAMs on current ...
RIGHT QUATERNIONIC COHERENT STATES AND THE HEISENBERG UNCERTAINTY PRINCIPLE

Muraleetharan , B.; Thirulogasanthar, k. (Jaffna University International Research Conference, 2014)

Parallel to the quantization of the complex plane, using the canonical coherent states of a right quaternionic Hilbert space, quaternion field of quaternionic quantum mechanics is quantized and using the quantization the ...
Investigation of Antifungal Properties of Lantana camara Stem Bark Extract and its Bioassay Guided Fractionation

Gobika, A. Jeyadevan, J.P.; Thavaranjit, A.C. Manoranjan, T. (Jaffna University International Research Conference, 2014)

Medicinal plants represent a rich source of antimicrobial agents.In this study L.camara was selected due to lack of information in our region about the antifungal activity of its stem bark and the selected fungi were plant ...
DISCRETE FRAMES ON FINITE DIMENSIONAL QUATERNION HILBERT SPACES

Khokulan, M. Thirulogasanthar, K. Srisatkunarajah, S. (2014)

A general theory of frames on finite dimensional quaternion Hilbert spaces is demonstrated along the lines of their complex counterpart. In this paper we established the frame decomposition theorem for quaternion Hilbert ...
Antifungal Activity of Some Plant Extracts Against Decay Fungi From Palmyrah Leaf Handicrafts

Subajini Mahilrajan. Jeyarani Nandakumar.; Robika Kailayalingam. Nilushiny Aloysius.; Manoharan. SriThayalan SriVijeindran. (Jaffna University International Research Conference, 2014)

Fungi associated with decaying handicrafts made from palmyrah leaf were isolated from two different sites of the Jaffna peninsula and characterized as Aspergillus niger, Aspergillus flavus and Penicillium sp. These were ...
Sequential Input Space Carving for visual codebook design

Barathy, Mayurathan (BMVA, 2013-10-04)

In well-known framework for visual scene recognition literature, clustering to construct a visual codebook is an important step, and is usually achieved by k-means clustering. This is known to be computational and performance ...
Compact Codebook Design for Visual Scene Recognition by Sequential Input Space Carving

Barathy, Ganesharajah; Mahesan, Sinnathamby; Pinidiyaarachchi, U.A.J. (IEEE, 2013-09-25)

We present a novel approach to the design of codebooks in patch-based, bag-of-feature visual scene recognition problems. The Sequential Input Space Carving (SISC) approach we present achieves compact codebooks in a fraction ...
Content Based Image Retrieval: An overview of structure of the image and image database

Barathy, Ganesharajah; Mahesan, Sinnathamby; Pinidiyaarachchi, U.A.J. (SLIIT, 2011-01-27)

There are a number of challenging problems in Content Based Image Retrieval (CBIR) particularly on structure of the image and image database. Separating an image into its constituent parts is a major task in this area. In ...
A Morphological and Gradient based Approach to Classify Plant Leaves Using Support Vector Machines

Kobikrishna, P.; Ramanan, A. (iPURSE, 2015-11-06)

Plants are an important resource for human well-being. Plant recognition is very essential in agriculture for the management of plant types whereas botanists can use this application for medicinal purposes. Leaves of ...
Online Multi-Person Tracking-by-Detection Method Using ACF and Particle Filter

Kokul, T.; Ramanan, A.; Pinidiyaarachchi, U.A.J. (IEEE, 2015-12-12)

Automatically detecting and tracking multiple persons in videos is one of the main research interest in computer vision based applications. This paper presents a tracking-by-detection approach for tracking people in dynamic ...
A Pre-processing Method for Printed Tamil Documents: Skew Correction and Textual Classification

Ramanan, M.; Ramanan, A.; Charles Eugene, Y. (IEEE, 2015-12-12)

An Optical character recognition (OCR) consists of the phases: preprocessing and segmentation, feature extraction, classification and post-processing. This paper focuses on pre-processing and segmentation tasks which plays ...
Creating Compact and Discriminative Visual Vocabularies using Visual Bits

Kirishanthy, T.; Ramanan, A. (IEEE, 2015-11-24)

In a patch-based object recognition system the key role of a visual vocabulary is to provide a way to map the low-level features into a fixed-length vector in histogram space to which standard classifiers can be directly ...
Front-view Car Detection using Vocabulary Voting and Mean-Shift Search

Sotheeswaran, S.; Ramanan, A. (IEEE, 2015-08-25)

Vehicle detection has received much attention over the recent years. In this paper we mainly address on the detection of cars in front-view static images and focus on local features that describe structural characteristics ...
A Hybrid Decision Tree for Printed Tamil Character Recognition Using SVMs

Ramanan, M.; Ramanan, A.; Charles Eugene Y. (IEEE, 2015-08-25)

Optical character recognition (OCR) is one of the important research areas in image processing and pattern recognition. OCR for printed Tamil text is considered as a challenging problem due to the large number of (i.e., ...
A Classifier-Free Codebook-based Image Classification of Vehicle Logos

Sotheeswaran, S.; Ramanan, A. (IEEE, 2014-12-15)

Logo identification and classification have received considerable attention from both the machine learning and computer vision communities. Vehicle logo recognition (VLR) is used to recognise accurately the manufacturer ...
A Performance Comparison and Post-processing Error Correction Technique to OCRs for Printed Tamil Texts

Ramanan, M.; Ramanan, A.; Charles Eugene, Y. (IEEE, 2014-12-15)

Optical Character Recognition (OCR) deals with automated recognition of characters that are in the format of digital image. OCR refers to the process by which scanned images are electronically processed and converted to ...
One-Pass Clustering Superpixels

Kesavan, Y.; Ramanan, A. (IEEE, 2014-12-22)

A superpixel is an image patch which is better aligned with intensity edges than a rectangular patch. Superpixels are perceptually consistent units which carry more information than pixels and adhere well to image boundaries. ...

Now showing items 421-440 of 655

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