536 research outputs found
Code for: Credibility Assessment of Patient-Specific Computational Modeling using Patient-Specific Cardiac Modeling as an Exemplar
No full textCode for used to run the simulation studies in
Credibility Assessment of Patient-Specific Computational Modeling using Patient-Specific Cardiac Modeling as an Exemplar
S. Galappaththige, R. Gray, C. Costa, S. Niederer and P. Pathmanathan
(under submission
Bayesian tolerance intervals with probability matching priors / Dharini a/p Pathmanathan
No full textA review on statistical tolerance intervals shows that the derivation of two-sided tolerance intervals is far more challenging than that of their one-sided counterparts.
Much of the existing construction of two-sided tolerance intervals are through a numerical approach. This study addresses the problems of constructing two-sided tolerance intervals in balanced one-way random effects models and for a general family of distributions. The Bayesian tolerance interval developed by Ong and Mukerjee (2011) using probability matching priors (PMP) is compared via Monte Carlo simulation with the modified large sample (MLS) tolerance interval of Krishnamoorthy and Mathew (2009) for normal and non-normal experimental errors with respect to
coverage probabilities and expected widths. Data generated from normal and nonnormal experimental errors were studied to see the effects on the tolerance intervals since real data may not necessarily follow the normal distribution. Results show that the PMP tolerance interval appears to be less conservative for data with moderate and large number of classes while the MLS tolerance interval is preferable for smaller sample sizes. For the second part of the study, the PMP as well as frequentist two-sided tolerance intervals are constructed for a general family of parametric models.
Simulation studies show that the asymptotic results are well-reflected in finite sample sizes. The findings are then applied to real data. The results obtained in this research are a contribution to the area of statistical tolerance regions
sj-docx-1-cpj-10.1177_00099228211070397 – Supplemental material for Turning Blue With a Cry: More Than Meets the Eye
No full textSupplemental material, sj-docx-1-cpj-10.1177_00099228211070397 for Turning Blue With a Cry: More Than Meets the Eye by Sanjay Woodhull, Justin Qi Yuee Wang, Jeyanthi Kulasegarah, Sangita Dharshini Terumalay, Pathmanathan Rajadurai, Zhong Yang Tan and Anna Marie Nathan in Clinical Pediatrics</p
Dynamic wind turbine output power reduction under varying wind speed conditions due to inertia
No full textABSTRACTThe inertia of wind turbines causes a reduction in their output power due to their inability to operate at the turbine maximum co‐efficient of performance point under dynamic wind conditions. In this paper, this dynamic power reduction is studied analytically and using simulations, assuming that a steady‐state optimal torque control strategy is used.The concepts of the natural and actual turbine time‐constant are introduced, and typical values for these parameters are examined. It is shown that for the typical turbine co‐efficient of performance curve used, the average turbine speed can be assumed to be determined by the average wind speed. With this assumption, analytical expressions for the power reduction with infinite and then finite turbine inertia are determined for sine‐wave wind speed variations. The results are then generalized for arbitrary wind speed profiles.A numerical wind turbine system simulation model is used to validate the analytical results for step and sine‐wave wind speed variations. Finally, it is used with real wind speed data to compare with the analytical predictions. Copyright © 2012 John Wiley & Sons, Ltd.Chun Tang, Wen L. Soong, Peter Freere, Mehanathan Pathmanathan and Nesimi Ertugru
Inverse membrane problems in elasticity
No full textThe inverse elasticity problem of determining the undeformed, deflated, configuration of a nonlinear elastic membrane, given the deformed configuration enclosing an incompressible fluid under known pressure, is considered. It is shown that, in practical cases, it is enough to determine only the undeformed metric tensor, and it is also shown how the two- and three-dimensional cases are fundamentally different. For the three-dimensional case, we set up and classify the partial differential equations to be solved, prove existence of an undeformed state given an undeformed metric and study the axisymmetric case in detail. © The author 2009. Published by Oxford University Press; all rights reserved
digling/vowel-purity-paper: Official publication release (version 1.0).
No full text<p>This is the official release for the paper "Vowel Purity and Rhyme Evidence in Old Chinese Reconstruction" (published with Lingua Sinica), by List, Pathmanathan, Bapteste, and Lopez (2017).</p>
sj-docx-1-asp-10.1177_00037028231182721 - Supplemental material for Distinct Lipid Phenotype of Cancer-Associated Fibroblasts (CAFs) Isolated From Overweight/Obese Endometrial Cancer Patients as Assessed Using Raman Spectroscopy
No full textSupplemental material, sj-docx-1-asp-10.1177_00037028231182721 for Distinct Lipid Phenotype of Cancer-Associated Fibroblasts (CAFs) Isolated From Overweight/Obese Endometrial Cancer Patients as Assessed Using Raman Spectroscopy by Tze Hua Yeu, Intan Sofia Omar, S.F. Abdul Sani, Dharini Pathmanathan and
Boon Tong Goh, Nithyialakshmi Ravindran, Ik Hui Teo, Yogeeta Gunasagran,
Noor Azmi Mat Adenan, Ivy Chung, Amira Hajirah Abd Jamil in Applied Spectroscopy</p
Genotypic differences in vase life of Anthurium andraeanum (Hort.) cut-flowers are associated with differences in spathe chlorophyll content
No full textAnthurium (Anthurium andraeanum (Hort.)) is an important crop in the worldwide cut-flower industry, valued in particular for its showy colors and long vase life, which varies from a few days to several weeks depending on the cultivar. Previous work suggested that long vase life is associated with the chlorophyll content of the spathe, especially when more light is available. Here we compare the vase life of ten anthurium cultivars covering a range of chlorophyll contents, using two light intensities: low light (40 µmol m −2 s −1) and high light (400 µmol m −2 s −1). The experiment was arranged in a factorial design with six replicate cut-flowers per cultivar per light intensity, and measurements were recorded weekly for cut-flower degradation, water uptake, spathe chlorophyll content and spathe hyperspectral reflectance. Cultivar differences in vase life were positively associated with differences in the initial spathe chlorophyll content (accounting for > 60 % of the variation). The use of high light also significantly increased vase life in three of the high chlorophyll cultivars. Chlorophyll content increased over time in some cultivars, and this increase was associated with extended vase life under high light (accounting for 69 % of the variation). In both cases chlorophyll content provided a better indicator of vase life than the red dip index (R800 nm – R685 nm) derived from hyperspectral reflectance. The results show that cultivars with a high initial chlorophyll content often have an ability to ‘re-green’ by increasing chlorophyll content while in the vase. Both high initial chlorophyll content and the ability to perform re-greening are associated with a longer vase life suggesting that chlorophyll activity in the spathe helps to maintain the cut-flowers. </p
The Sri Lankan Debt Crisis: Is there a way out?
No full textThis thesis deals with the current debt crisis is Sri Lanka, which was brought about by rapid development following the end of the civil war, and how best to prevent future debt crises by providing recommendations to policy makers. This thesis makes use of two models, the Balance-of-Payments (BOP) Constrained growth model, and the Flying Goose Model (FGM) of development which was observed in East Asian countries during their fast-paced growth period. The BOP model is used to identify industries within Sri Lanka’s economy which have a high income elasticity of demand by the rest of the world. The results of the data analysis find that Sri Lanka has a high income elasticity of demand in the machinery and chemical sectors with in the manufacturing industry. The Sri Lankan economy is also diagnosed in the context of the FGM to understand in what stage of the FGM Sri Lanka is in, by means of carrying out non-parametric analysis on the FDI per capita, the trade dependence ratio, the revealed comparative advantage index and other economic parameters. From the evidence presented by the two models, policy recommendations go in the direction of promoting selective industrial policy, in order to enhance the growth of these targeted industries identified by the BOP model through means of accelerating the Flying Goose Model of development
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