6,196 research outputs found
i-OntoLearning: Ontological support for rich learning
No full textMany university and college programs have a rich repository of learning resources. These resources could range from multi-media material to simple text documents, from powerpoint slides to web based applets. However, they are created by different authors and are usually accessible by the students registered for the courses taught by these authors. In order to enable students to discover the relationships that exist amongst these resources, we have designed i-OntoLearning, a system based on the Computing Ontology and a Metadata Ontology which we have created. This platform supports learning through the ability to infer relationships within the curricula as well as with the learning resources. As more resources are added to the system, further interesting relationships can be discovered. This paper focuses on the application of semantic web technologies including ontology design and queries on these ontologies
Industrial building system : does it good for sustainable building? / S. Roshanfekr, N. M Tawil and N. A. Goh
Get PDFHousing and building construction is an important principle in sustainable development. The industrialization of building systems has been found to be necessary due to several factors: the fast and continuing progress of
today’s world, the industrialization of many aspects of modern living, significant population growth, and the
inadequacy and incompetence of conventional construction methods particularly in dense housing situations. This paper investigates the relevance of these factors as the drivers for changing people’s habits and
perspectives toward building construction and to justify the introduction of industrialized construction approaches to replace the outdated conventional methods as well as the necessity to provide training in order to achieve product quality
Greater than 90nm continuously wavelength-tunable fibre Bragg gratings
No full textWe report silica-based fibre Bragg grating filters with wavelength tuning-spans well over 90nm using a simple set-and-forget beam bending tuning-package. The key operational parameters of the filters are maintained over the entire tuning-window
Exploring the chemical profiles and biological values of two spondias species (S. Dulcis and S. Mombin): Valuable sources of bioactive natural products
Get PDFSpondias species have been used in traditional medicine for different human ailments. In this study, the effect of different solvents (ethyl acetate, methanol, and water) and extraction methods (infusion, maceration, and Soxhlet extraction) on the enzyme inhibitory activity against acetylcholinesterase, butyrylcholinesterase, tyrosinase, α-amylase, α-glucosidase, and antioxidant properties of S. mombin and S. dulcis leaves and stem bark were evaluated. Ultra-high-performance liquid chromatography–high resolution mass spectrometry (UHPLC-HRMS) yield in the identification and/or annotation of 98 compounds showing that the main secondary metabolites of the plant are gallic and ellagic acids and their derivatives, ellagitannins, hydroxybenzoic, hydroxycinnamic, acylquinic acids and flavonols, flavanones, and flavanonols. The leaves infusion of both Spondias species showed highest inhibition against acetylcholinesterase (AChE) (10.10 and 10.45 mg galantamine equivalent (GALAE)/g, for S. dulcis and S. mombin, respectively). The ethyl acetate extracts of the stem bark of S. mombin and S. dulcis actively inhibited α-glucosidase. Methanolic extracts of the leaves and stem bark exhibited highest tyrosinase inhibitory action. Antioxidant activity and higher levels of phenolics were observed for the methanolic extracts of Spondias. The results suggested that the Spondias species could be considered as natural phyto-therapeutic agents in medicinal and cosmeceutical applications
Development and assessment of methods for detecting dementia using the human electroencephalogram
No full textThis paper makes an outline case for the need for a low-cost, easy to administer method for detecting dementia,within the growing at risk population. It proposes two methods for electroencephalogram (EEG) analysis for detecting dementia that could fulfil such a need. The paper describes a fractal dimension-based method for analyzing the EEG waveforms of subjects with dementia and reports on an assessment which demonstrates that an appropriate fractal dimension measure could achieve 67% sensitivity to probable Alzheimer's disease (as suggested by clinical psychometric testing and EEG findings) with a specificity of 99.9%. An alternative method based on the probability density function of the zero-crossing intervals is shown to achieve 78% sensitivity to probable Alzheimer's disease and an estimated sensitivity to probable Vascular (or mixed) dementia of 35% (as suggested by clinical psychometric testing and EEG findings) with a specificity of 99.9%. This compares well with other studies, reported by the American Academy of Neurology, which typically provide a sensitivity of 81% and specificity of 70%. The EEG recordings used to assess these methods included artefacts and had no a priori selection of elements "suitable for analysis." This approach gives a good prediction of the usefulness of the methods, as they would be used in practice. A total of 39 patients (30 probable Alzheimer's Disease, six Vascular Dementia and three mixed dementia) and 42 healthy volunteers were involved in the study. However, although results from the preliminary evaluation of the methods are promising, there is a need for a more extensive study to validate the methods using EEGs from a larger and more varied patient cohorts with neuroimaging results, to exclude other causes and cognitive scores to correlate results with severity of cognitive status
Correction to: Magnetic resonance imaging features of the superior cervical ganglion and expected changes after radiation therapy to the head and neck in a long-term follow-up (Neuroradiology, (2020), 62, 4, (519-524), 10.1007/s00234-020-02373-4)
No full textIn the article “Magnetic resonance imaging features of the superior cervical ganglion and expected changes after radiation therapy to the head and neck in a long-term follow-up”, one of the author names, K Chokkappan, was spelled incorrectly
The Ingara bistatic SAR upgrade: First results
No full textAn upgrade programme to add a bistatic collection capability to the Ingara airborne X-band fully-polarimetric imaging radar has recently been completed, and the first field trials of the new bistatic SAR system were conducted in December 2007. This involved a set of experimental SAR data collections in a bistatic geometry, in which the airborne radar was operated in a fine-resolution (600 MHz bandwidth) circular spotlight-SAR mode, in conjunction with a newly-developed fully-polarimetric stationary ground-based bistatic receiver. These data collections were largely successful, and produced a set of fully-polarimetric bistatic SAR data, collected over a wide range of bistatic angles. In this paper, we give an overview of the Ingara bistatic SAR system, describe the recent bistatic SAR experiment, discuss the techniques employed for processing the data, and present preliminary experimental results.Alvin S. Goh, Mark Preiss, Nick J. S. Stacy, Douglas A. Gra
Chronic kidney disease is a different population: the CKD. Qld registry dataset
No full textThematic Poster Session / A42 Interstitial Lung Disease: Epidemiology, Evaluation and PathogenesisS. Macansh, I. Glaspole, N. Goh, P. Hopkins, Y. Moodley, P. Reynolds, E. Walters, R. Wood-Baker, C. Zappala, S. Chapman, W. Cooper, W. Darbishire, S. Ellis, A. Mahar, J. Fuller, M. McAlister, E. Stevens, K. Symons, S. Webster, T. Cort
Singaporean mothers' perception of their three-year-old child's weight status: A cross-sectional study
Get PDFSingapore National Research Foundation; National Medical Research Council (NMRC), SingaporeFull Author List: Cheng T.S.; Cheng T.; Loy S.; Cheung Y.; Chan J.; Tint M.; Godfrey K.; Gluckman P.; Kwek K.; Saw S.; Chong Y.; Lee Y.; Yap F.; Lek N.; Sheppard A.; Chinnadurai A.; Goh A.; Rifkin-Graboi A.; Qiu A.; Biswas A.; Lee B.; Broekman B.; Quah B.; Shuter B.; Chng C.; Ngo C.; Hsu S.; Bong C.; Henry C.; Chee C.; Fok D.; Yeo G.; Inskip H.; Chen H.; Van Bever H.; Magiati I.; Wong I.; Lau I.; Kapur J.; Richmond J.; Holbrook J.; Gooley J.; Tan K.; Niduvaje K.; Singh L.; Su L.; Daniel L.; Shek L.; Fortier M.; Hanson M.; Chong M.; Rauff M.; Chua M.; Meaney M.; Teoh O.; Wong P.; Agarwal P.; Van Dam R.; Rebello S.; Chong S.; Cai S.; Soh S.; Lim S.; Rajadurai V.; Stunkel W.; Han W.; Pang W.; Goh Y.; Chan Y.</p
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