• 239 Citations
  • 8 h-Index
20072019
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Research Output 2007 2019

2019

Assortativity of aging key players in the dynamical networks

Halilan, S. R., Bakar, S. A., Yeun, L. C. & Razak, F. A., 1 Jan 2019, In : Communications in Mathematical Biology and Neuroscience. 2019, 27.

Research output: Contribution to journalArticle

Open Access
Aging of materials
Proteins
Protein Interaction Maps
Protein
Protein Interaction Networks

Model sistem dinamik untuk meramalkan bilangan pesakit dan keperluan sumber tenaga di zon kuning jabatan kecemasan

Translated title of the contribution: A system dynamics model to predict the number of patients and resources required in emergency department’s yellow zoneMohd Yusoff, N. S., Liong, C. Y., Md Noh, A. Y., Ismail, W. R. & Ahmad, N., 1 Jan 2019, In : Sains Malaysiana. 48, 4, p. 909-920 12 p.

Research output: Contribution to journalArticle

Open Access
Dynamic models
Planning
Strategic planning
Quality of service
Dynamical systems
1 Citation (Scopus)
Ink
Gels
Discriminant analysis
Infrared radiation
Fourier transforms
2018
1 Citation (Scopus)

A system dynamics model for predicting present and future demands in emergency department’s green zone

Yusoff, N. S. M., Liong, C. Y., Md Noh, A. Y., Ismail, W. R. & Ahmad, N., 1 Nov 2018, In : Indian Journal of Public Health Research and Development. 9, 11, p. 1566-1572 7 p.

Research output: Contribution to journalArticle

Hospital Emergency Service
Holidays
Malaysia
Computer Simulation
Nurses
1 Citation (Scopus)
Data envelopment analysis
Discrete event simulation
Resource allocation
4 Citations (Scopus)
Discriminant analysis
Ink
Processing
Substrates
Principal component analysis
1 Citation (Scopus)

Estimating optimal resource capacities in emergency department

Ibrahim, I. M., Liong, C. Y., Abu Bakar, S., Ahmad, N. & Najmuddin, A. F., 1 Nov 2018, In : Indian Journal of Public Health Research and Development. 9, 11, p. 1558-1565 8 p.

Research output: Contribution to journalArticle

Computer Simulation
Hospital Emergency Service
Software
Therapeutics

Estimating the right allocation of resources on weekends and public holidays in Green Zone using hybrid methods

Yusoff, N. S. M., Liong, C. Y., Ismail, W. R., Noh, A. Y. M. & Noor, N. A. M., 4 Apr 2018, 2017 UKM FST Postgraduate Colloquium: Proceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium. American Institute of Physics Inc., Vol. 1940. 020123

Research output: Chapter in Book/Report/Conference proceedingConference contribution

resources
estimating
schedules
Malaysia
congestion

Identification of strategies for urban agriculture development: A SWOT analysis

Ramaloo, P., Siwar, C., Liong, C. Y. & Isahak, A., 1 Jan 2018, In : Planning Malaysia. 16, 3, p. 320-331 12 p.

Research output: Contribution to journalArticle

urban agriculture
agriculture
threat
food
food security
2 Citations (Scopus)

Iterative random vs. Kennard-Stone sampling for IR spectrum-based classification task using PLS2-DA

Lee, L. C., Liong, C. Y. & Jemain, A. A., 4 Apr 2018, 2017 UKM FST Postgraduate Colloquium: Proceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium. American Institute of Physics Inc., Vol. 1940. 020116

Research output: Chapter in Book/Report/Conference proceedingConference contribution

sampling
rocks
random sampling
education
predictions

Neurocomputing approach for firearm identification

Ghani, N. A. M., Liong, C. Y. & Jemain, A. A., 1 Jan 2018, In : Pertanika Journal of Science and Technology. 26, 1, p. 341-352 12 p.

Research output: Contribution to journalArticle

Firearms
pins
Backpropagation
learning
Learning
28 Citations (Scopus)
Discriminant Analysis
Discriminant analysis
discriminant analysis
Least-Squares Analysis
forensic science

Perception of community residents on supporting urban agriculture in Malaysian city: Case study at Bukit Mertajam

Ramaloo, P., Liong, C. Y., Siwar, C. & Isahak, A., 1 Sep 2018, In : Jurnal Pengurusan. 53

Research output: Contribution to journalArticle

Residents
Urban agriculture
Food
Farming
Household
1 Citation (Scopus)

Performance improvement of the yellow zone in emergency department using discrete event simulation approach

Ibrahim, I. M., Liong, C. Y., Abu Bakar, S. & Najmuddin, A. F., 1 Jan 2018, In : International Journal of Engineering and Technology(UAE). 7, 4, p. 102-105 4 p.

Research output: Contribution to journalArticle

Discrete event simulation
Hospital Emergency Service
Observation
Public Hospitals
Software
5 Citations (Scopus)
Ink
Light pens
Testing
Forensic science
Infrared radiation
2017
22 Citations (Scopus)

A contemporary review on Data Preprocessing (DP) practice strategy in ATR-FTIR spectrum

Lee, L. C., Liong, C. Y. & Jemain, A. A., 15 Apr 2017, In : Chemometrics and Intelligent Laboratory Systems. 163, p. 64-75 12 p.

Research output: Contribution to journalReview article

Spectroscopy
Pipelines
Processing

A robust firearm identification algorithm of forensic ballistics specimens

Chuan, Z. L., Jemain, A. A., Liong, C. Y., Ghani, N. A. M. & Tan, L. K., 21 Sep 2017, In : Journal of Physics: Conference Series. 890, 1, 012126.

Research output: Contribution to journalArticle

ballistics
estimators
filters
thresholds
histogram
Pixels
methodology
method
Manuscripts
1 Citation (Scopus)
Fourier Transform Infrared Spectroscopy
Principal Component Analysis
Least-Squares Analysis
Principal component analysis
spectral analysis
4 Citations (Scopus)

Firing pin impression segmentation using Canny edge detection operator and Hough transform

Razak, N. A., Liong, C. Y., Jemain, A. A., Md Ghani, N. A., Zakaria, S. & MohamadSulaiman, H., 1 Jan 2017, In : Journal of Telecommunication, Electronic and Computer Engineering. 9, 1, p. 23-26 4 p.

Research output: Contribution to journalArticle

Hough transforms
Edge detection
Ballistics
Image segmentation
Authentication
2 Citations (Scopus)

Minimizing patient waiting time in emergency department of public hospital using simulation optimization approach

Ibrahim, I. M., Liong, C. Y., Abu Bakar, S., Ahmad, N. & Najmuddin, A. F., 27 Apr 2017, 4th International Conference on Mathematical Sciences - Mathematical Sciences: Championing the Way in a Problem Based and Data Driven Society, ICMS 2016. American Institute of Physics Inc., Vol. 1830. 060005

Research output: Chapter in Book/Report/Conference proceedingConference contribution

emergencies
optimization
Malaysia
resources
simulation
1 Citation (Scopus)

Q-mode versus R-mode principal component analysis for linear discriminant analysis (LDA)

Lee, L. C., Liong, C. Y. & Jemain, A. A., 12 May 2017, 3rd ISM International Statistical Conference 2016, ISM 2016: Bringing Professionalism and Prestige in Statistics. American Institute of Physics Inc., Vol. 1842. 030024

Research output: Chapter in Book/Report/Conference proceedingConference contribution

principal components analysis
plots
matrices
classifying
spatial distribution
1 Citation (Scopus)

The effects of column-wise manipulations on accuracy of classical classifiers with high-dimensional spectral data

Lee, L. C., Liong, C. Y. & Jemain, A. A., 27 Apr 2017, 4th International Conference on Mathematical Sciences - Mathematical Sciences: Championing the Way in a Problem Based and Data Driven Society, ICMS 2016. American Institute of Physics Inc., Vol. 1830. 080008

Research output: Chapter in Book/Report/Conference proceedingConference contribution

classifiers
manipulators
infrared spectra
principal components analysis
scaling
2016
7 Citations (Scopus)
Self organizing maps
Fourier transform infrared spectroscopy
Fourier Transform Infrared Spectroscopy
reflectance
chemical composition
5 Citations (Scopus)

Comparison of several variants of principal component analysis (PCA) on forensic analysis of paper based on IR spectrum

Lee, L. C., Liong, C. Y., Osman, K. & Jemain, A. A., 21 Jun 2016, Advances in Industrial and Applied Mathematics: Proceedings of 23rd Malaysian National Symposium of Mathematical Sciences, SKSM 2015. American Institute of Physics Inc., Vol. 1750. 060012

Research output: Chapter in Book/Report/Conference proceedingConference contribution

principal components analysis
predictions
Near infrared spectroscopy
discrimination
infrared spectroscopy
reflectance
4 Citations (Scopus)

Effects of scatter-correction pre-processing methods and spectral derivative algorithms on forensic classification of paper

Lee, L. C., Liong, C. Y., Osman, K. & Jemain, A. A., 21 Jun 2016, Advances in Industrial and Applied Mathematics: Proceedings of 23rd Malaysian National Symposium of Mathematical Sciences, SKSM 2015. American Institute of Physics Inc., Vol. 1750. 060013

Research output: Chapter in Book/Report/Conference proceedingConference contribution

preprocessing
principal components analysis
examination
5 Citations (Scopus)

Forensic differentiation of paper by ATR-FTIR spectroscopy technique and partial least-squares-discriminant analysis (PLS-DA)

Lee, L. C., Liong, C. Y., Osman, K. & Jemain, A. A., 21 Jun 2016, Advances in Industrial and Applied Mathematics: Proceedings of 23rd Malaysian National Symposium of Mathematical Sciences, SKSM 2015. American Institute of Physics Inc., Vol. 1750. 060016

Research output: Chapter in Book/Report/Conference proceedingConference contribution

spectroscopy
Malaysia
shops
discrimination
education
2 Citations (Scopus)

Genetic algorithms for wavenumber selection in forensic differentiation of paper by linear discriminant analysis

Liong, C. Y., Lee, L. C., Osman, K. & Jemain, A. A., 21 Jun 2016, Advances in Industrial and Applied Mathematics: Proceedings of 23rd Malaysian National Symposium of Mathematical Sciences, SKSM 2015. American Institute of Physics Inc., Vol. 1750. 060017

Research output: Chapter in Book/Report/Conference proceedingConference contribution

genetic algorithms
lists
infrared spectra
1 Citation (Scopus)

Improving the performance of chili sauce manufacturing process using simulation approach

Liong, C. Y., Hamid, S. H. A. & Ibrahim, I. M., 21 Jun 2016, Advances in Industrial and Applied Mathematics: Proceedings of 23rd Malaysian National Symposium of Mathematical Sciences, SKSM 2015. American Institute of Physics Inc., Vol. 1750. 030026

Research output: Chapter in Book/Report/Conference proceedingConference contribution

manufacturing
food processing
labor
products
simulation
2015
2 Citations (Scopus)

A proposed simulation optimization model framework for emergency department problems in public hospital

Ibrahim, I. M., Liong, C. Y., Abu Bakar, S., Ahmad, N. & Najmuddin, A. F., 11 Dec 2015, Innovation and Analytics Conference and Exhibition, IACE 2015: Proceedings of the 2nd Innovation and Analytics Conference and Exhibition. American Institute of Physics Inc., Vol. 1691. 030011

Research output: Chapter in Book/Report/Conference proceedingConference contribution

emergencies
optimization
resources
simulation
Malaysia
1 Citation (Scopus)

A simulation study on garment manufacturing process

Liong, C. Y. & Rahim, N. A. A., 1 Jan 2015, 2nd ISM International Statistical Conference 2014, ISM 2014: Empowering the Applications of Statistical and Mathematical Sciences. Noar, N. A. Z. M., Zakaria, R., Yusoff, W. N. S. W., Mohamad, M. S. & Hamid, M. R. A. (eds.). American Institute of Physics Inc., p. 460-466 7 p. (AIP Conference Proceedings; vol. 1643).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

garments
sewing
manufacturing
simulation
buttons

Improving operational anodising process performance using simulation approach

Liong, C. Y. & Ghazali, S. S., 22 Oct 2015, 22nd National Symposium on Mathematical Sciences, SKSM 2014: Strengthening Research and Collaboration of Mathematical Sciences in Malaysia. American Institute of Physics Inc., Vol. 1682. 030008

Research output: Chapter in Book/Report/Conference proceedingConference contribution

anodizing
aluminum
simulation
supplying
sealing
1 Citation (Scopus)

Robust camera calibration for the MiroSot and the AndroSot vision systems using artificial neural networks

Pratomo, A. H., Zakaria, M. S., Nasrudin, M. F., Prabuwono, A. S., Liong, C. Y. & Azmi, I., 2015, Advances in Intelligent Systems and Computing. Springer Verlag, Vol. 345. p. 571-585 15 p. (Advances in Intelligent Systems and Computing; vol. 345).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cameras
Calibration
Neural networks
Lenses
Robots
2014

A model for routing problem in quay management problem

Zirour, M., Oughalime, A., Liong, C. Y., Ismail, W. R. & Omar, K., 2014, AIP Conference Proceedings. American Institute of Physics Inc., Vol. 1602. p. 587-593 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

trucks
products
vehicles
routes
optimization

An efficient automatic firearm identification system

Chuan, Z. L., Liong, C. Y., Jemain, A. A. & Ghani, N. A. M., 2014, AIP Conference Proceedings. American Institute of Physics Inc., Vol. 1602. p. 1185-1189 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

system identification
ballistics
microscopes
2013
1 Citation (Scopus)

Camera Calibration: Transformation Real-World Coordinates into Camera Coordinates Using Neural Network

Pratomo, A. H., Zakaria, M. S., Prabuwono, A. S. & Liong, C. Y., 2013, Communications in Computer and Information Science. Springer Verlag, Vol. 376 CCIS. p. 345-360 16 p. (Communications in Computer and Information Science; vol. 376 CCIS).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cameras
Calibration
Neural networks
Robots
Mobile robots
2 Citations (Scopus)

Classification of pistol via numerical based features of firing pin impression image

Md Ghani, N. A., Ahmad Kamaruddin, S. B., Liong, C. Y. & Jemain, A. A., 2013, IEEE Symposium on Computers and Informatics, ISCI 2013. IEEE Computer Society, p. 165-169 5 p. 6612396

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Discriminant analysis
Crime
8 Citations (Scopus)

Comparison of linear discriminant analysis and logistic regression for data classification

Liong, C. Y. & Foo, S. F., 2013, AIP Conference Proceedings. Vol. 1522. p. 1159-1165 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

logistics
regression analysis
normality
classifying
predictions

Fuzzy inference systems, ASKE, knowledge value added, and Monte Carlo risk simulation for evaluating intangible human capital investments

Mun, J., De Albuquerque, N. R., Liong, C. Y. & Salleh, A. R., 2013, AIP Conference Proceedings. Vol. 1522. p. 1166-1175 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

inference
resources
simulation
2 Citations (Scopus)

Mathematical Modelling of University Timetabling: A mathematical programming approach

Aizam, N. A. H. & Liong, C. Y., 2013, In : International Journal of Applied Mathematics and Statistics. 37, 7, p. 110-122 13 p.

Research output: Contribution to journalArticle

Timetabling
Mathematical programming
Mathematical Programming
Mathematical Modeling
Malaysia

Modeling and forecasting of KLCI weekly return using WT-ANN integrated model

Liew, W. T., Liong, C. Y., Hussain, S. I. & Isa, Z., 2013, AIP Conference Proceedings. Vol. 1522. p. 1276-1282 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

forecasting
wavelet analysis
mathematical models
predictions
2 Citations (Scopus)

Pendekatan Pengesanan Titik Sauh Secara Automatik bagi Kesan Pin Peletup Senjata Api

Translated title of the contribution: Automatic anchor point detection approach for firearms firing pin impressionChuan, Z. L., Ghani, N. A. M., Liong, C. Y. & Jemain, A. A., Sep 2013, In : Sains Malaysiana. 42, 9, p. 1339-1344 6 p.

Research output: Contribution to journalArticle

Anchors
Crime
Ballistics
Identification (control systems)
Entropy

Segmentation of Arabic characters: A comprehensive survey

Zeki, A. M., Zakaria, M. S. & Liong, C. Y., 31 Jan 2013, Technology Diffusion and Adoption: Global Complexity, Global Innovation. IGI Global, p. 251-288 38 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

Optical character recognition
Character recognition
Testing
segmentation
performance
2012
1 Citation (Scopus)

Firearm classification based on numerical features of the firing pin impression

Liong, C. Y., Md Ghani, N. A., Kamaruddin, S. B. A. & Jemain, A. A., 2012, Procedia Computer Science. Elsevier, Vol. 13. p. 144-151 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Principal component analysis
Crime
Discriminant analysis
Identification (control systems)
3 Citations (Scopus)

Firearm identification using numerical features of centre firing pin impression image

Ghani, N. A. M., Kamaruddin, S. B. A., Liong, C. Y. & Jemain, A. A., 2012, ISCAIE 2012 - 2012 IEEE Symposium on Computer Applications and Industrial Electronics. p. 293-296 4 p. 6482115

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Crime
Discriminant analysis
Law enforcement
2011
11 Citations (Scopus)

A cyclical nurse schedule using goal programming

Jenal, R., Ismail, W. R., Yeun, L. C. & Oughalime, A., 2011, In : Journal of Mathematical and Fundamental Sciences. 43A, 3, p. 151-164 14 p.

Research output: Contribution to journalArticle

Goal Programming
nurses
schedules
programming
scheduling
3 Citations (Scopus)

Adaptive binarization method for enhancing ancient Malay manuscript images

Yahya, S. R., Sheikh Abdullah, S. N. H., Omar, K. & Liong, C. Y., 2011, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Vol. 7106 LNAI. p. 619-627 9 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 7106 LNAI).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Binarization
Ink
Adaptive Thresholding
Experiments
Equalization
6 Citations (Scopus)

Firearm recognition based on whole firing pin impression image via backpropagation neural network

Kamaruddin, S. B. A., Ghani, N. A. M., Liong, C. Y. & Jemain, A. A., 2011, Proceedings of the 2011 International Conference on Pattern Analysis and Intelligent Robotics, ICPAIR 2011. Vol. 1. p. 177-182 6 p. 5976891

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Backpropagation
Neural networks
Mean square error
Pattern recognition
Transfer functions
2 Citations (Scopus)

Genetic algorithm for a Quay Management Problem

Zirour, M., Liong, C. Y. & Ismail, W. R., Sep 2011, In : Australian Journal of Basic and Applied Sciences. 5, 9, p. 2257-2263 7 p.

Research output: Contribution to journalArticle

Genetic algorithms
Trucks
Costs