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Browsing by Type "Conference Paper"

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2 Dimensional Hydrodynamic Flood Routing Analysis on Flood Forecasting Modelling for Kelantan River Basin
(EDP Sciences, 2016)
Azad W.H.
;
Sidek L.M.
;
Basri H.
;
Fai C.M.
;
Saidin S.
;
Hassan A.J.
;
57192919599
;
35070506500
;
57065823300
;
57214146115
;
57192919900
;
57192919800
Flood disaster occurs quite frequently in Malaysia and has been categorized as the most threatening natural disaster compared to landslides, hurricanes, tsunami, haze and others. A study by Department of Irrigation and Drainage (DID) show that 9% of land areas in Malaysia are prone to flood which may affect approximately 4.9 million of the population. 2 Dimensional floods routing modelling demonstrate is turning out to be broadly utilized for flood plain display and is an extremely viable device for evaluating flood. Flood propagations can be better understood by simulating the flow and water level by using hydrodynamic modelling. The hydrodynamic flood routing can be recognized by the spatial complexity of the schematization such as 1D model and 2D model. It was found that most of available hydrological models for flood forecasting are more focus on short duration as compared to long duration hydrological model using the Probabilistic Distribution Moisture Model (PDM). The aim of this paper is to discuss preliminary findings on development of flood forecasting model using Probabilistic Distribution Moisture Model (PDM) for Kelantan river basin. Among the findings discuss in this paper includes preliminary calibrated PDM model, which performed reasonably for the Dec 2014, but underestimated the peak flows. Apart from that, this paper also discusses findings on Soil Moisture Deficit (SMD) and flood plain analysis. Flood forecasting is the complex process that begins with an understanding of the geographical makeup of the catchment and knowledge of the preferential regions of heavy rainfall and flood behaviour for the area of responsibility. Therefore, to decreases the uncertainty in the model output, so it is important to increase the complexity of the model. � The Authors, published by EDP Sciences, 2017.
8
33-channels multiwavelength generation of L-band brillouin-erbium fiber laser
(Optical Society of America, 2009)
Al-Mansoori M.H.
;
Mahdi M.H.
;
6505891021
;
7005348074
[No abstract available]
4
33-channels multiwavelength generation of L-band brillouin-erbium fiber laser
(2009)
Al-Mansoori M.H.
;
Mahdi M.A.
;
6505891021
;
7005348074
[No abstract available]
6
3D numerical investigation of water flow on unsymmetrical chute spillway
(American Institute of Physics Inc., 2020)
Saidin M.S.I.
;
Aziz M.S.A.
;
Zainol M.R.R.M.A.
;
Ishaik M.H.H.
;
Luo P.
;
Malek M.A.
;
57219903352
;
36695908700
;
57193313971
;
57218125463
;
42661996000
;
55636320055
Smooth spillway is a classic design that been use for spilling the massive water flow down from the dam's reservoir. The scale-down model of the smooth spillway with the unsymmetrical shape had been investigating numerically. Due to the unsymmetrical shape, the velocity and the water surface characteristics of at the smooth chute area had been studying by using 3D numerical simulation applixxcation. Realizable ?-e (RKE) turbulence model and volume of fluid (VOF) method had been used to simulate the water flow from the upstream to the downstream of the smooth spillway. The results provide an excellent prediction of the hydraulic characteristics on unsymmetrical smooth chute region. The spanwise of water surface contours and the streamwise water volume fraction profiles were successfully predicted the uneven water surface and the standing waves development at the midplane of spillway. While the streamwise velocity distribution profile has shown slightly different profile pattern at each side of the plane. In the future work will be conducted to validate and verify the simulation results with the experiment results. � 2020 Author(s).
1
4-coils magnetic resonance coupling wireless power transfer with varying rotational angle
(Institution of Engineering and Technology, 2018)
Tan S.Y.
;
Lee H.J.
;
Ker P.J.
;
57202604947
;
57190622221
;
37461740800
This research work performs a study on Wireless Power Transfer (WPT) using 4-coils magnetic resonance where research focuses on varying the rotational angle of the receiver coil from the centre of system. Simulation work is performed using CST Microwave Studio to observe the magnetic coupling for 4-coils system at a varied rotational angle. Comparative analysis was performed at different rotational angle which are 0�, 15�, 30� and 45�. Performance parameters such as scattering parameter, impedance parameter, electric field and magnetic field are analysed. � 2018 Institution of Engineering and Technology. All rights reserved.
3
Abnormalities and fraud electric meter detection using hybrid support vector machine & genetic algorithm
(2007)
Yap K.S.
;
Abidin I.Z.
;
Ahmad A.R.
;
Hussien Z.F.
;
Pok H.L.
;
Ismail F.I.
;
Mohamad A.M.
;
24448864400
;
35606640500
;
35589598800
;
11640353300
;
25646345800
;
25645748900
;
24448210200
This paper presents an intelligent system to reduce Non Technical Loss (NTL) using hybrid Support Vector Machine (SVM) and Genetic Algorithm (GA). The main motivation for this research is to assist Sabah Electricity Sdn. Bhd. (SESB) to reduce their distribution loss, estimated around 15% at present in Sabah State, Malaysia. The hybrid algorithm is able to preselect customers to be inspected on-site for abnormalities or potential fraud according to their consumption patterns. SVM is a classification technique developed by Vapnik [1] but a practical difficulty of using SVM is the selection of parameters such as C and kernel parameter, � in Gaussian RBF kernel. The purpose of choosing parameters is to get the best generalization performance. Genetic Algorithm (GA) is used to search for the best parameter of SVM classification by using combination of random and pre-populated genomes from Pre-Populated Database (PPD). It provides an increased convergence and globally optimized solutions. The algorithm has been tested using actual customer consumption data from SESB. 10 fold cross validation method is used to confirm the consistency of the detection accuracy. The paper also highlights comparison results between typical SVM and SVM-GA. The highest fraud detection accuracy for SVMGA is 94%.
6
Absolute homogeneity test of Kelantan catchment precipitation series
(American Institute of Physics Inc., 2015)
Ros F.C.
;
Tosaka H.
;
Sasaki K.
;
Sidek L.M.
;
Basri H.
;
57222964772
;
55812843500
;
57192402740
;
35070506500
;
57065823300
Along the Kelantan River in north east of Malaysia Peninsular, there are several areas often damaged by flood during north-east monsoon season every year. It is vital to predict the expected behavior of precipitation and river runoff for reducing flood damages of the area under rapid urbanization and future planning. Nevertheless, the accuracy and reliability of any hydrological and climate studies vary based on the quality of the data used. The factors causing variations on these data are the method of gauging and data collection, stations environment, station relocation and the reliability of the measurement tool affect the homogenous precipitation records. Hence in this study, homogeneity of long precipitation data series is checked via the absolute homogeneity test consisting of four methods namely Pettitt test, standard normal homogeneity test (SNHT), Buishand range test and Von Neumann ratio test. For homogeneity test, the annual rainfall amount from the daily precipitation records at stations located in Kelantan operated by Department of Irrigation and Drainage Malaysia were considered in this study. The missing values were completed using the correlation and regression and inverse distance method. The data network consists of 103 precipitation gauging stations where 31 points are inactive, 6 gauging stations had missing precipitation values more than five years in a row and 16 stations have records less than twenty years. So total of 50 stations gauging stations were evaluated in this analysis. With the application of the mentioned methods and further graphical analysis, inhomogeneity was detected at 4 stations and 46 stations are found to be homogeneous. � 2015 AIP Publishing LLC.
3
Academia and industry collaboration: It takes two (+1) to tango!
(2011)
Chen L.F.
;
Omar R.
;
55268591500
;
37012659000
Malaysia's aspiration is to be a developed nation by the year 2020. This sacred aspiration aptly known as the "Wawasan 2020" requires the amalgamated effort of three important parties: university, industry and government. Universities not only have an important role as " producers" of this highly intensive knowledge-based society which contributes to human capital building, but they are also in the driving seat of Research, Development and Innovation (RD&I). Throughout the years, various models of this joint venture between these three entities have been proposed. This paper will look into various factors supporting this venture, the potential pitfalls to be avoided and experiences of successful ventures. � 2011 IEEE.
3
Academic Emotions Review: Types, Triggers, Reactions, and Computational Models
(Institute of Electrical and Electronics Engineers Inc., 2020)
Subramainan L.
;
Mahmoud M.A.
;
57189089861
;
55247787300
Although researchers from across the field of social sciences have highlighted the importance of academic emotions, it has mostly been neglected as a crucial factor to promote active and meaningful communication in a classroom. To tackle this issue, this paper provides a clear vision to understand the current state of research in this area. To do so, a comprehensive review is conducted on academic emotions to map the studies in the literature to a coherent taxonomy. This paper examines the literature on academic emotions to provide a systematic presentation to the concept and subsequently provides a baseline and recommendations for further research on students' engagement based on academic emotions. � 2020 IEEE.
3
An academic literary review of University-Industry collaboration in Malaysia
(Institute of Electrical and Electronics Engineers Inc., 2015)
Rahima R.E.A.
;
Hanafi N.A.
;
Jais J.
;
55801922600
;
57188684234
;
56602524800
This paper reviews studies on University-Industry collaboration (UIC) in Malaysia. The review analyses published studies of Malaysian UIC in various academic databases, focusing on the current development of UIC and the research gap. The factors of UIC are also reviewed and classified based on the technology-organisation-environment (TOE) framework. It is found that previous studies have been carried out in the contexts of both university and industry. From the lens of TOE, the most investigated factor is organisational perspective. However, there is a lack of empirical studies that covered UIC from multiple perspectives. Discussion and future research are provided based on the findings. � 2015 IEEE.
2
The acceptance behavior of online recruitment users in Malaysia
(2006)
Ibrahim O.
;
Ithnin N.
;
Muslim N.A.
;
36166710700
;
24724665700
;
52364509500
In this current economic climate, many people are searching for jobs from Internet-based (online) recruitment service providers. Online recruitment has become an effective way to reach the majority of candidates globally. The purpose of this paper is to determine the pattern of acceptance behavior and to test whether the quality of website would influence users' perception. A set of working hypotheses pertaining to the relationship between quality of website and behavior were drawn from configurational acceptance behavior of online recruitment framework emphasizing a linkage between website characteristics, perceptions and behavior. This paper's conceptual model and specific hypotheses were tested using a sample of 73 respondents from the college of business administration and accounting, UNITEN. This study will benefit the recruitment service providers or other business organizations in improving their recruitment website hence the users would have positive perception towards online recruitment system.
11
Access control and privacy in MANET emergency environment
(Institute of Electrical and Electronics Engineers Inc., 2014)
Bakar A.A.
;
Ghapar A.A.
;
Ismail R.
;
35178991300
;
35172922200
;
15839357700
Mobile ad hoc networks (MANETs) cultivate a new research trend in today's computing. With some unique features such as scalability, fault tolerant and autonomous system enable a network to be setup with or without any trusted authority. This makes MANET suitable for the emergency and rescue operations. During an emergency situation, there is a need for the data to be shared with the rescuers. However, there are some of the personal data cannot be shared to all rescuers. Thus, the privacy and security of data becomes a main concern here. This paper addresses these issues with a combination of access control mechanism and privacy policy to ensure that the privacy and security of personal data is protected accordingly. © 2014 IEEE.
3
Accuracy assessment of urban growth pattern classification methods using confusion matrix and ROC analysis
(Springer Verlag, 2015)
Ghani N.L.A.
;
Abidin S.Z.Z.
;
Khalid N.E.A.
;
56940219600
;
25824609700
;
25634252000
Urban growth pattern can be categorized as either infill, expansion or outlying. Studies on urban growth classification are focusing on the description of urban growth pattern geometric features using conventional landscape metrics. These metrics are too simple and unable to give detailed information on accuracy of the classification methods. This paper aims to assess the accuracy of classification methods that can determine urban growth patterns correctly for a specific growth area. Accuracy assessments are carried out using three different classification methods - moving window, topological relation border length and landscape expansion index. Based on confusion matrices and receiver operating characteristic (ROC) analysis, results show that landscape expansion index has the best accuracy among all. � Springer Science+Business Media Singapore 2015.
5
Accurate fault location of two-terminal transmission line based on one end voltage measurement and Smooth Support Vector Machines
(2011)
Alanzi E.A.J.
;
Younis M.A.A.
;
36987889100
;
56501517900
This paper presents a new technique for accurate fault location based on voltage measurement from one end of the two-terminal transmission line and Smooth Support Vector Machine (SSVM). Due to common problems of current transformer during fault location and as a result increasing the cost and reduction of the accuracy, proposed technique is independent of current measurement and based on one terminal voltage measurement of the transmission line. Post-fault voltage at one end of the line is measured and used in calculation of the fault location. GPS (global positioning system) is not required for this technique resulting in a reduction of economic cost. Using the proposed technique, fault location can be estimated with a lower than 0.025% error without using current transformers and GPS. EMTP/ATP simulation and SSVM results show that the proposed fault location technique is independent of fault type, fault resistance and fault inception of the transmission line. � 2011 IEEE.
5
An accurate infant cry classification system based on continuos hidden Markov model
(2010)
Abdulaziz Y.
;
Ahmad S.M.S.
;
57207857499
;
24721182400
This paper describes the feasibility study of applying a novel continuous Hidden Markov Model algorithm as a classifier to an automatic infant cry classification system which main task is to classify and differentiate between pain and non-pain cries belonging to infants. The classification system is trained based on Baum -Welch algorithm on a pair of local feature vectors. In this study, Mel Frequency Cepstral Coefficient (MFCC) and Linear Prediction Cepstral Coefficients (LPCC) are extracted from the audio samples of infant's cries and are fed into the classification module. The system accuracy reported in this study varies from 71.8% up to 92.3% under different parameter settings, whereby in general the system that are bases on MFCC features performs better than the one that utilizes LPCC features. The encouraging results demonstrate that indeed Hidden Markov Model provides for a robust and accurate infant cry classification system. � 2010 IEEE.
3
Achieving unity power factor at floating grid conditions in a cement plant in India-Case Study
(IEEE Computer Society, 2018)
Hasan Mydin J.
;
Umashankar S.
;
Sharma P.
;
Roshan R.
;
Ranganatha Chakravarthy H.S.
;
Ramachandaramurthy V.K.
;
57205529934
;
57199091461
;
57203189694
;
57205530500
;
56641896200
;
6602912020
Most cement plants in India and around the world face a unique problem in regards with power factor. In industries where their local generation with their Captive Power Plant (CPP) and Waste Heat Recovery System (WHRS) is equal to or greater than the plant's total utilization, the load import from the Grid is brought down close to zero. This is done to reduce the power cost because the Grid power is comparatively expensive. Though the Grid power is not required, the connection to the Grid is mandatory for the system in floating mode to ensure the stability of the system, to avoid black-outs in the event of CPP failures/trips and to tackle unplanned/sudden variations in the load. Such a setup makes it extremely complex to maintain power factor at the Grid incomer. For more than a decade, it was assumed that no solution exists to this problem where CPPs are connected and power drawn from the Grid is close zero. In India, a state like Chhattisgarh, where Grid billing is in kVAh and on TOD 1 1TOD-Time of Day billing system. It refers to the practice of setting different price for a of unit energy at different times of the day. The general classification is On-Peak, Off-Peak and Normal hours. basis, power factor plays a major role in Grid cost optimization. This paper contains a discussion on the problem, the solution and a case study of achieving unity power factor at floating grid conditions in a cement plant in India. � 2018 IEEE.
1
Acidic Barren Slope Profiling using Electrical Resistivity Imaging (ERI) at Ayer Hitam area Johor, Malaysia
(Institute of Physics Publishing, 2016)
Azhar A.T.S.
;
Hazreek Z.A.M.
;
Aziman M.
;
Haimi D.S.
;
Hafiz Z.M.
;
57221094905
;
54394805800
;
36671634300
;
57190173432
;
39162217600
Recently, non-destructive method such as the electrical resistivity technique has become increasingly popular in engineering, environmental, mining and archeological studies nowadays. This method was popular in subsurface profiling due to its ability to replicate the images of the subsurface indirectly. The soil slope found in Batu Pahat, specifically in Ayer Hitam, is known to be problematic due to its barren condition. This location is believed to contain futile soil due to its difficulty in supporting the growth of vegetations. In the past, acidic barren slope assessment using non-destructive method was rarely being used due to several reasons related to the equipment and knowledge constraints. Hence, this study performed an electrical resistivity imaging using ABEM Terrameter LS in order to investigate the acidic barren slope conditions. Field data acquisition was based on Schlumberger and Wenner arrays while RES2DINV software was used to analyze and generate a 2-D model of the problematic subsurface profile. Based on electrical resistivity results, it was found that the acidic barren slope studied consists of two main zones representing residual soil (electrical resistivity value = 10 - 600 ?m) and shale (electrical resistivity value = 20 - 2000 ?m). The results of resistivity value were correlated with the physical mapping and the in situ mackintosh probe test for verification purposes. It was found that the maximum depth of the mackintosh probe test was 1.8 m due to its ground penetration limitation. However, the results of the resistivity section managed to achieve greater depth up to 40 m. Hence, the correlation between electrical resistivity and mackintosh probe results can only be performed at certain depth of the acidic barren slope profile in contrast with the physical mapping which able to define the whole section of the barren soil slope structure. Finally, a good match of electrical resistivity results calibrated with mackintosh and physical mapping data showed that this technique was appropriate to be applied in near-surface acidic barren slope assessment which can further compliment borehole data and other physical mapping data at a lower cost, higher speed, large data coverage and better environmental sustainability.
4
Acoustic isolation of Jute and Kapok fiber reinforced Polypropylene composites
(IOP Publishing Ltd, 2020)
Azieyanti N.A.
;
Faris R.
;
57218170365
;
58122815300
For the requirements of human health initiative especially when emerging of advanced composite material technology, manufactures of high efficient acoustical materials are necessary to regulate the noise pollution. The objective of this study is to fabricate the jute and kapok fiber reinforced polypropylene composites and to analyze the comparison of acoustic isolation effect of jute and kapok fiber reinforced polypropylene composites. To produce these two types of composites material, the raw materials went through a different stage of procedure such as, blending, mixing and heat compression molding process. Polypropylene was filled with jute and kapok fiber at various loading at 0, 10, 20, 30 and 40% each. The composites were prepared by using Brabender Torque Rheometer Plastograph machine and the hot press at temperature 180 C with 50 rpm. The acoustic test was conducted by using insertion loss method in sine wave tube device to measure the different sound level, loss in these two composites material. Based on the result observed, the higher of weight percentage of jute and kapok fiber in each composition, the better of the performance for each material and the optimum result for each composite are determined to be 30% filler loading. It also can be conclude that the used of jute fiber reinforced polypropylene composites give an outstanding result in term of sound absorption and transmission loss compared to kapok reinforced polypropylene composites. � Published under licence by IOP Publishing Ltd.
1
Acoustic performance mixture of natural fibres of oil palm frond (Opf) and empty fruit bunch (efb)
(Trans Tech Publications Ltd, 2021)
Mageswaran R.C.
;
Ewe L.S.
;
Yew W.K.
;
Mohammad Nazhan N.
;
Zawawi I.
;
57361611200
;
58032789200
;
57361611300
;
57361569000
;
57361354300
The expansion of the oil palm industry has affected the environment and the poor handling of oil palm waste has greatly endangered the habitat. The oil palm natural fibre waste can be put to good use as sound absorber owing to its amazing acoustic properties. This research focuses on the acoustic properties of mixing Empty Fruit Bunch (EFB) and Oil Palm Frond (OPF) in a thickness of 12 mm, 14 mm, 16 mm, and 18 mm. The fibreboard has been fabricated at a density of 120 kg/m3. The Sound Absorption Coefficient (SAC) and morphologies of all the samples were examined using the Impedance Tube Method (ITM) and Scanning Electron Microscope, (SEM). The findings of this research show the sample�s SAC value increased with thickness. It is noteworthy that this combination percentage of natural fibres of EFB and OPF show good acoustic performance where the SAC values above 0.8 at wide frequency 3000-6400 Hz. Sample thickness 14 mm and 18 mm achieved unity (1.0) at frequency 4000-5500 Hz. In addition, all the samples were found to exceed 90 % of the absorption rate in the range of 4500-6400 Hz. The morphology content of EFB and OPF helps in enhancing the absorption rate. � 2021 Trans Tech Publications Ltd, Switzerland.
Acoustic Performance of Mixing EFB and OPF Low-Density Fibreboards in Different Thickness
(Springer Science and Business Media B.V., 2021)
Chandran M.R.
;
Sheng E.L.
;
Nasir M.N.
;
Kean Y.W.
;
Ibrahim Z.
;
57421971900
;
58032789200
;
57422859800
;
57422859900
;
57546469300
Fast growth of worldwide oil palm industry and nation�s economics have affected the environment for the mishandling of oil palm waste, which has endangered the flora and fauna that surrounds it. The wastes of oil palm can be turned into good source of material for sound absorption or other usages. Furthermore, the awareness about the harmful effects of fibreglass as sound absorbing material has certainly increased and the demand of replacing it with natural fibres are growing day by day. This research highlights the acoustic properties of mixing empty fruit bunch (EFB) and oil palm frond (OPF) at mixing ratios of 50% EFB-50% OPF, 40% EFB-60% OPF, 30% EFB-70% OPF and 20% EFB-80% OPF in thickness of 12, 14, 16 and 18�mm with density of 120�kg/m3. The sound absorption coefficient, SAC (?) test was conducted using the impedance tube method (ITM) and the morphology of the samples were examined using scanning electron microscope, SEM. The results showed no trend for the sac values with increasing of thickness and OPF contents. Nevertheless, it is noteworthy that the frequency range with 0.8 sac values and above are increased with thickness, it may be attributed to tortuosity effects. The morphology of EFB and OPF mixture may play a crucial role in determining the sound absorption. � 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
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