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Browsing Department of Physical Science by Document type "Article"

Now showing items 21-40 of 58

Group Graph Measures of Brain Networks New Concepts and Definitions

Subaramya, V; Perera, A.A.I; Ratnarajah, N (Postgraduate Institute of Science, University of Peradeniya, 10-11-18)

Brain networks consist of cortical and subcortical regions as nodes and connections between them as edges. These brain networks convey a huge amount of information that has been almost unexplored previously and the ...
A Low-Cost Contactless Palm Print Device to Recognize Person based on Texture Measurement

Sharad, B.J.; Raut, S.D.; Humbe, V.T.; Kartheeswaran, T. (IJETSR, International Journal of Engineering Technology Science and Research, 10-02-16)

Today’s Information Technology grows rapidly withnew technologies and need more security for the data transmissionover the internet. Steganography is one of the solutions to ensurethe data secure over the internet. An audio ...
Monitoring Fermentation of Black Tea with Image Processing Techniques

Saranka, S.; Kartheeswaran, T.; Wanniarachchi, D.D.C.; Wanniarachchi, W.K.I.L. (Institute o f Physics - Sri Lanka, 32nd Technical Sessions, March 2016, Colombo, Sri Lanka, 22-05-16)

The possibility to use digital images of tea particles as a tool to monitor fermentation ofblack tea processing is studied in this project. Copper green color is the predicted colorused to measure the degree of fermentation; ...
Multi Agent Based Audio Steganography

Kartheeswaran, T.; Senthooran, V.; Pemadasa, T. D. D. L. (IEEE, 2015 IEEE International Conference on Computational Intelligence and Computing Research (ICCIC), 21-03-16)

Today’s Information Technology grows rapidly with new technologies and need more security for the data transmissionover the internet. Steganography is one of the solutions to ensurethe data secure over the internet. An ...
Multi-Label Segmentation White Matter Structures: Application to Neonatal Brains.

Nagulan, R.; Qiu, A. (ElSEVIER/NeuroImage, 15-11-14)

Accurate and consistent segmentation of brain white matter bundles at neonatal stage plays an important role in understanding brain development and detecting white matter abnormalities for the prediction of psychiatric ...
Neuroimaging assessment of spasticity developed after acquired brain injuries and multiple sclerosis

Bertoni, M.A.; Sakel, M.; Hojjattoleslami, A.; Bertoni, I.V.; Nagulan, R. (Centauro/ Neuroradiology Journal, 2012-07)

This study evaluated whether different imaging techniques correlate with specific variables routinely used to grade the types and complexities of patient conditions in neurorehabilitation services and their clinical outcomes, ...
A novel approach for improved tractography and quantitative analysis of probabilistic fibre tracking curves

Nagulan, R.; Andrew, S.; Oleg, D.; Ali, H. (ElSEVIER/Medical image Analysis, 2012-01)

This paper presents a novel approach for improved diffusion tensor fibretractography, aiming to tackle a number of the limitations of current fibre tracking algorithms, and describes a quantitative analysis tool for ...
A Novel Routing Scheme Based on Protection Mechanism to Discover Unconventional Disjoint Path in Adhoc Wireless Networks

Suthaharan, S (International Journal of Computational Intelligence and Informatics (IJCII), 2013)

The performances of the routing protocols are important since they compute the primary path between source and destination. In addition, routing protocols need to detect failure within a short period of time when nodes ...
A Novel White Matter Fibre Tracking Algorithm using Probabilistic Tractography and Average Curves

Nagulan, R.; Andrew, S.; Oleg, D.; Ali, H. (Springer Berlin/Heidelberg MICCAI, 2010)

This paper presents a novel white matter fibretractography approach using average curves of probabilistic fibre tracking measures. We compute”representative” curves from the original probabilistic curve-set using two ...
Online Multi-Person Tracking-by-detection Method Using ACF and Particle Filter

Kokul, T.; Ramanan, A.; Pinidiyaarachchi, U.A.J. (IEEE, IEEE Seventh International Conference on Intelligent Computing and Information Systems (ICICIS), 12-12-15)

Automatically detecting and tracking multiple persons in videos is one of the main research interests in computer vision based applications. This paper presents a tracking-by-detection approach for tracking people in dynamic ...
Optimal estimators in misspecified linear regression model with an application to real-world data

Kayanan, M.; Wijekoon, P. (Taylor & Francis, 15-04-19)

In this article, we propose the sample information optimal estimator and the stochastic restricted optimal estimator for misspecified linear regression model when multicollinearity exists among explanatory variables. ...
Partial Functionality and Service Worthiness in Comprehensive Networked Virtual Environment

Suthaharan, S.; Kuhanesan, S. (International Journals of Scientific Knowledge (IJSK), 2013)

Middleware services for management of shared state in comprehensive distributed interactive applications with partial functionality and network virtual environment (NVEs). This research section introduces some mechanisms ...
A Performance Evaluation of various SVM Tools and Different Feature Selection Strategies

Kokul, T. (Postgraduate Institute of Science, University of Peradeniya, 06-10-15)

Support vector machine (SVM) is an efficient classification technique which is widely used in many machine learning applications due to the property of outperforming other classifiers in its generalization performance. ...
Performance of Existing Biased Estimators and the Respective Predictors in a Misspecified Linear Regression Model

Kayanan, M.; Wijekoon, P. (Scientific Research Publishing, 31-10-17)

In this paper, the performance of existing biased estimators (Ridge Estimator (RE), Almost Unbiased Ridge Estimator (AURE), Liu Estimator (LE), Almost Unbiased Liu Estimator (AULE), Principal Component Regression Estimator ...
Performance of LASSO and Elastic net estimators in Misspecified Linear Regression Model

Kayanan, M.; Wijekoon, P. (Faculty of Science, University of Peradeniya, Sri Lanka, 16-09-19)

Ridge Estimator (RE) has been used as an alternative estimator for Ordinary Least Squared Estimator (OLSE) to handle multicollinearity problem in the linear regression model. However, it introduces heavy bias when the ...
Phase space error control with variable time-stepping algorithms applied to the forward Euler method for autonomous dynamical systems

Vigneswaran, R.; Thilaganathan, S. (Advances in mathematical sciences, knowvel, 2019-03-31)

We consider a phase space stability error control for numerical simulation of dynamical systems. Standard adaptive algorithm used to solve the linear systems perform well during the finite time of integration with fixed ...
Pre-conﬁgured Backup Protection with Limited Resource Sharing in Elastic Optical Networks

Suthaharan, S; Ratnam, K; Ragel, R.G (IEEE 10th International Conference on Industrial and Information Systems (ICIIS'15), 2015)

In this paper, we address the problem of providing survivability in elastic optical networks (EONs). In EONs, unlike the traditional 50 GHz ﬁxed grid, ﬁne granular 12.5 GHz ﬂexgrid is used and the frequency spectrum is ...
Pre-harvest Interval and Pesticide Contamination in Different Vegetablescollected from Local Market of Vavuniya, Sri Lanka

Vijitharan, S.; Loganathan, P. (International Research Journal of Environmental Sciences, 03-02-16)

Pesticides are designed to kill the pest and also it’s harmful to human. Synthetic pesticides not only pollute the environment but also persist in vegetables and passed through the food chain. The objective of this study ...
Probabilistic Clustering and Shape Modelling of White Matter Fibre Bundles using Regression Mixtures.

Nagulan, R.; Andy, S.; Ali, H. (Springer Berlin/Heidelberg MICCAI, 2011)

We present a novel approach for probabilistic clustering of white matter fibre pathways using curve-based regression mixture modelling techniques in 3D curve space. The clustering algorithm is based on a principled method ...
Real-time Lecture Delivery Approach to e-Learning Using WebRTC

Gopinath, S.; Senthooran, V.; Lojenaa, N.; Kartheeswaran, T. (WinC2016,Wayamba University of Sri Lanka., 2016)

Web Real Time Communication (WebRTC) is a new technology in communication. It is simply plug-in free video and audio transmission between web browsers. In existing e-learning technologies such as Moodle and Blackboard ...

Browsing Department of Physical Science by Document type "Article"

Browsing Department of Physical Science by Document type "Article"

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