Browsing Physical Science by Issue Date

Now showing items 1-20 of 47

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 ...
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 ...
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 ...
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 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 ...
Service Prioritization in Node-Disjoint Routing For Adhoc Networks Based On QoS

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

Ad hoc network (MANET) is a collection of mobile nodes that can communicate with each other without using any fixed infrastructure. To support multimedia applications such as video and voice MANETs require an efficient ...
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 ...
Two-Tensor Model-Based Bootstrapping on Classified Tensor Morphologies: Estimation of Uncertainty in Fibre Orientation and Probabilistic Tractography

Nagulan, R.; Simmons, A.; Bertoni, M.; Ali, H. (ElSEVIER/Megnetic Resonance Imaging, 2013-02)

In this manuscript, fast and clinically feasible model-based bootstrapping algorithms using a geometrically constrained two-tensor diffusion model are employed for estimating uncertainty in fiber orientation. A Monte-Carlo-based ...
Structural connectivity asymmetry in the neonatal brain

Nagulan, R.; Graboi, Anne Rifkin; Fortier, M.V.; Chong, Y.S.; Kwek, K.; Saw, Seang-Mei; Godfrey, Keith M; Gluckman, P.D.; Meaney, M.J.; Qiu, A. (ElSEVIER/NeuroImage, 2013-07)

Asymmetry of the neonatal brain is not yet understood at the level of structural connectivity. We utilized DTI deterministic tractography and structural network analysis based on graph theory to determine the pattern of ...
Algorithm aspects of Rubik’s Cube 3D game

Subaramya, V.; Krishnakumar, K. (The Open University of Sri Lanka, 2013-11-28)

The Rubik's Cube is really captivating and fascinating puzzle. It is a 3D game. In the literary survey, there are several applications available in Rubik’s cube. Some of them are games, some of them have solution. But there ...
Efficient Switch Architectures for Pre-configured Backup Protection with Sharing in Elastic Optical Networks

Suthaharan, S; Ratnam, K; Ragel, R.G (IEEE 7th International Conference on Information and Automation for Sustainability (ICIAfS'14), 2014)

In this paper, we address the problem of providing survivability in elastic optical networks (EONs). EONs use fine granular frequency slots or flexible grids, when compared to the conventional fixed grid networks and ...
Abnormalities of cortical thickness, subcortical shapes, and white matter integrity in subcortical vascular cognitive impairment.

Thong, Jamie Yu Jin; Du, Jia; Nagulan, R.; Dong, Yanhong; Soon, Hock Wei; Saini, Monica; Tan, Ming Zhen; Ta, Anh Tuan; Chen, Christopher; Qiu, A (Wiley Online Library/Human Brain Mapping, 2014-05)

Subcortical vascular cognitive impairment (sVCI) is caused by lacunar infarcts or extensive and/or diffuse lesions in the white matter that may disrupt the white matter circuitry connecting cortical and subcortical regions ...
Multi-Label Segmentation White Matter Structures: Application to Neonatal Brains.

Nagulan, R.; Qiu, A. (ElSEVIER/NeuroImage, 2014-11-15)

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 ...
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 ...
Adaptation of brain functional and structural networks in aging

Lee, A.; Nagulan, R.; Tuan, T.A.; Chen, S.H.; Qiu, A. (Public Library of Science/PLOS ONE, 2015-04-15)

The human brain, especially the prefrontal cortex (PFC), is functionally and anatomically reorganized in order to adapt to neuronal challenges in aging. This study employed structural MRI, resting-state fMRI (rs-fMRI), and ...
Vegetable Growers Perception of Pesticide Use Practices and Health Effects in the Vavuniya District

Vijitharan, S.; Loganathan, P. (IDOSI Publications, 2015-07-15)

As in developing countries like Sri Lanka, the application of pesticides is often not very precise and unintended exposures occur to other organisms in the general area where pesticides are applied. The objectives of this ...
Developmental synchrony of thalamocortical circuits in the neonatal brain.

Poh, J.S.; Li, Y.; Nagulan, R.; Fortier, M.V.; Chong, Y.S.; Kwek, K.; Saw, S.M.; Gluckman, P.D.; Meaney, M.J.; Qiu, A. (ElSEVIER/NeuroImage, 2015-08-01)

The thalamus is a deep gray matter structure and consists of axonal fibers projecting to the entire cortex, which provide the anatomical support for its sensorimotor and higher-level cognitive functions. There is limited ...
A Performance Evaluation of various SVM Tools and Different Feature Selection Strategies

Kokul, T. (Postgraduate Institute of Science, University of Peradeniya, 2015-10-06)

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. ...
Awareness of Banned Pesticide usage among Vegetable Grower’s and Health impacts in the Vavuniya District

Vijitharan, S.; Loganathan, P. (Faculty of Agriculture, University of Jaffna, Sri Lanka., 2015-10-15)

Pesticides kill or deter the destructive activity of the target organism and they posses’ inherent toxicities that endanger the health of the farmers, consumers and the environment. The objectives of this study were to ...
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), 2015-12-12)

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 ...

Now showing items 1-20 of 47

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