Singapore, Singapore
Singapore, Singapore

SIM University is the only private university in Singapore and is highly funded by the government. Established in 2005, the university is started as a result of the Singapore Government mandate to set up a university for working adults. In 2012, it is announced that UniSIM will be granted National University status and will become the republic's 6th national university. The university currently admits only part-time students but will begin to offer full-time publicly funded university places starting 2014. In October 2013, it is announced that UniSIM has been selected to house Singapore's third law school. Though a private university, eligible students are able to enjoy government tuition fee subsidy, government loans and bursaries for their undergraduate education. The university is managed separately from the SIM Global Education arm of the Singapore Institute of Management Group.As of 2014 the patron of the university is Tony Tan Keng Yam, President of Singapore. The Chancellor of the university is Professor Cham Tao Soon, who was the founding president of Nanyang Technological University . The Founding President of SIM University is Professor Cheong Hee Kiat, former deputy president of NTU. Wikipedia.

SEARCH FILTERS
Time filter
Source Type

Ma N.L.,SIM University
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2017

In this paper, we focus on the forecasting of monthly departure passenger movements for one of the busiest airport in Asia. Firstly, we forecast the monthly airport departure passenger flows for the next 12 months for macro level planning. Next, we used SAS Forecast Studio for detailed-level planning based on airline and per airline-city combinations using hierarchical forecasting. We have also used the actual data to validate the accuracy of the forecast error. We have shown that in most cases, the mean absolute percentage error is less than 3%, which indicates the usefulness of our model for better decision making. © Springer International Publishing AG 2017.


Lim T.-C.,SIM University
Journal of Mechanics | Year: 2013

This paper investigates the suitability of auxetic materials for load-bearing circular plates. It is herein shown that the optimal Poisson's ratio for minimizing the bending stresses is strongly dependent on the final deformed shape, load distribution, and the type of edge supports. Specifically, the use of auxetic material for circular plates is recommended when (a) the plate is bent into a spherical or spherical-like cap, (b) a point load is applied to the center of the plate regardless of the edge conditions, and (c) a uniform load is applied on a simply-supported plate. However, auxetic materials are disadvantaged when a flat plate is to be bent into a saddle-like shell. The optimal Poisson's ratios concept recommended in this paper is useful for providing an added design consideration. In most cases, the use of auxetic materials for laterally loaded circular plates is more advantageous compared to the use of materials with conventional Poisson's ratio, with other factors fixed. This is achieved through materials-based stress re-distribution in addition to the common practices of dimensioning-based stress redistribution and materials strengthening. © 2012 The Society of Theoretical and Applied Mechanics, R.O.C.


Lim T.-C.,SIM University
Journal of Medical Imaging and Health Informatics | Year: 2013

This paper surveys the several data mining methods that have been successfully developed for application in healthcare administration. The methods reviewed cover the following: clustering, rule induction, artificial neural network, nearest neighbor, decision tress, and statistical techniques. A comparative study to appraise the similarities and differences amongst the various methods are furnished herein. Applications of various data mining methods for various healthcare systems have been briefly discussed. Finally the challenges that healthcare users face in using data mining methods are identified. © 2013 American Scientific Publishers.


Lim T.-C.,SIM University
Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications | Year: 2013

Although most materials used in practice possess positive Poisson's ratio in the range 0 to 1/2, there has been increasing number of auxetic materials being developed and investigated. The counter-intuitive property of auxetic materials opens up the possibility of solids and structures that behave in ways that have been overlooked in the past but are nevertheless consistent with physical laws. This article investigates how the auxeticity of a plate material influences the stresses and moments arising from lateral loads. Using classical plate theories, the optimal Poisson's ratio of simply supported rectangular plates under lateral loads are obtained on the basis of (a) stress minimization from the maximum bending and shearing stresses, and (b) moment minimization from the maximum bending and twisting moments. Results from stress minimization shows that the optimal Poisson's ratio is strongly influenced by the relative plate thickness and plate aspect ratio. Using the example of a simply supported rectangular plate under sinusoidal load, the optimal Poisson's ratio becomes more negative for higher aspect ratio. In addition, the optimal Poisson's ratio becomes more negative, until a limit of -1 is reached, for decreasing relative plate thickness. Results from moment minimization reveal that the optimal Poisson's ratio is strongly influenced by the load distribution. For a square plate, the optimal Poisson's ratio is a negative value if the load distribution is more concentrated than a sinusoidal load or if the central square patch of uniform load takes up less than 43% of the plate area. These results suggest the usefulness of auxetic materials for lowering the stresses and moments in rectangular plates under most loading conditions. © IMechE 2012.


Lim T.-C.,SIM University
Physica Status Solidi (B) Basic Research | Year: 2011

Analytical expressions for the in-plane and out-of-plane coefficients of thermal expansion for laminates with isotropic laminas are presented herein based on (i) zero net force on the laminate edges, (ii) equal displacement of the lamina edges, and (iii) Hooke's law in three dimensions. Results show that a laminate consisting of alternating auxetic (with positive coefficient of thermal expansion, CTE) and negative thermal expansion (NTE) (with positive Poisson's ratio) laminas exhibit a more negative effective CTE than a laminate of alternating conventional laminas (positive Poisson's ratio and positive CTE) with unconventional laminas (auxetic and NTE). Finally, temperature-dependent CTE for such laminates are developed and plotted for special cases. It is herein shown that under certain circumstances, the magnitude of temperature-dependent effective CTE tends to infinity. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Lim T.-C.,SIM University
Journal of Mathematical Chemistry | Year: 2010

Although the Morse potential function is widely used in molecular modeling software, newer potential functions that possess more parameters provide greater accuracy. Against this backdrop, the Four-Parameter-Diatomic-Potential (FPDP) was selected for converting its parameter into those of the Morse potential due to the former's resemblance to the latter. A pair of modified Morse indices was extracted by imposing equal force constant for infinitesimal bond stretching and equal energy integral for complete interatomic separation. Results reveal very good agreement for both bond compression and bond stretching. The developed parameter conversion would enable all FPDP parameters to be converted into the modified Morse parameters. Only minor algorithm alterations are required for incorporating the modified Morse function into molecular modeling packages that adopt the conventional Morse potential for describing 2-body bonded interaction. © 2009 Springer Science+Business Media, LLC.


Tan N.T.,SIM University
Journal of Social Work in Disability and Rehabilitation | Year: 2013

The development of the structure and program for sustained intervention of disaster is the focus of this article. Structure consists of the framework for government, nonprofit groups, as well as local communities working together in response to disaster. It is concerned with the allocation of resources for effective service delivery. Collaboration at all levels and among public, private, and nonprofit organizations provides the basis for effective intervention. Policy also involves opening the boundaries and accepting international rescue and resources for long-term recovery. The article suggests a multisector, integrative, and evaluative approach to intervention for disaster recovery. © 2013 Copyright Taylor and Francis Group, LLC.


Lim T.-C.,SIM University
Journal of Engineering Mechanics | Year: 2010

In this note it is shown that the combination of conventional laminas (possessing positive Poisson's ratio) and auxetic laminas (possessing negative Poisson's ratio) gives rise to effective in-plane composite laminate Young's modulus that surpasses the rule-of-mixture formula. To enable comparison between the developed model with the rule-of-mixture, the former is presented in such a way that two correction functions exist distinctively for multiplication into the two terms of the rule-of-mixture formula. Each of the two correction functions reduces to a minimum of 1 when all laminas possess equal Poisson's ratio, and the correction functions are greater than one when there exists mismatch in the Poisson's ratios among the laminas in the laminate. Plotted results show that the overshooting of the laminate's effective in-plane modulus is significant for semiauxetic laminates but not for conventional and fully auxetic materials. © 2010 ASCE.


Lim T.-C.,SIM University
Journal of Engineering Materials and Technology, Transactions of the ASME | Year: 2014

This paper evaluates the elastic stability and vibration characteristics of circular plates made from auxetic materials. By solving the general solutions for buckling and vibration of circular plates under various boundary conditions, the critical buckling load factors and fundamental frequencies of circular plates, within the scope of the first axisymmetric modes, were obtained for the entire range of Poisson's ratio for isotropic solids, i.e., from -1 to 0.5. Results for elastic stability reveal that as the Poisson's ratio of the plate becomes more negative, the critical bucking load gradually reduces. In the case of vibration, the decrease in Poisson's ratio not only decreases the fundamental frequency, but the decrease becomes very rapid as the Poisson's ratio approaches its lower limit. For both buckling and vibration, the plate's Poisson's ratio has no effect if the edge is fully clamped. The results obtained herein suggest that auxetic materials can be employed for attaining static and dynamic properties which are not common in plates made from conventional materials. Based on the exact results, empirical models were generated for design purposes so that both the critical buckling load factors and the frequency parameters can be conveniently obtained without calculating the Bessel functions. Copyright © 2014 by ASME.


Lim T.-C.,SIM University
Journal of Thermal Stresses | Year: 2013

This article investigates the effect of auxeticity on the thermal stresses of isotropic plates. The thermal stress is non-dimensionalized against the coefficient of thermal expansion, the change in temperature and at least one of the moduli so as to express the dimensionless thermal stresses solely in terms of Poisson's ratio of the plate material. Results show that increasing auxeticity leads to mild and significant drop in the thermal stresses under the conditions of constant Young's modulus and constant shear modulus, respectively. However, increasing auxeticity causes increase in the thermal stress under the condition of constant bulk modulus. It is also shown that increasing auxeticity under the condition of constant product of all the three moduli reduces the thermal stress if Poisson's ratio falls within a wide range of -1 and 0.303. These results suggest that, under most circumstances, the replacement of conventional plate materials with auxetic solids is useful for reducing thermal stresses therein. The use of auxetic materials, therefore, provides an additional choice for the reduction of thermal stresses in plates other than selecting materials of lower modulus and low coefficient of thermal expansion. © 2013 Taylor and Francis Group, LLC.

Loading SIM University collaborators
Loading SIM University collaborators