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Modeling Fuzzy B-spline Interpolation Series using α-cut operation for spatial earth surface problem

Journal of Physics: Conference Series 2021年第1期1988卷

作者： N A Abu Bakar B Yusoff A F Wahab M Mamat Faculty of Informatics and Computing Universiti Sultan Zainal Abidin 21300 Terengganu Malaysia Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu 21300 Terengganu Malaysia

In this paper, the series of α-cut is also known as the α-cut operation used to construct a new model of surface called Fuzzy B-spline Interpolation Series surface. The surface is called Fuzzy B-spline Interpolation Series because of the various values of α chosen in the fuzzification method. Then, the operation is combined into a B-spline surface model. This new proposed model will be used to solve spatial earth surface problems in every collected data points. The spatial earth data have values in latitude, longitude and altitude. All these values are considered as uncertainty data because of the satellite's measurement errors. Finally, constructed surfaces' results will be compared between raw data's surface and Fuzzy B-spline Interpolation Series surface.

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Torrefaction of fish waste (Sardinella fimbriata) in a fixed bed reactor: Yields and biochar characterization

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IOP Conference Series: Earth and Environmental Science 2021年第1期765卷

作者： S F Norisham N F Munajat Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu 21030 Kuala Nerus Terengganu MALAYSIA Renewable Energy and Power Research Interest Group (REPRIG) Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu 21030 Kuala Nerus Terengganu MALAYSIA

Torrefaction is a promising process to upgrade biomass and produce solid biofuel. In this study, the fish by-product (Sardinella fimbriata), a fish-processing waste from the food industry highly prevalent in the east coast region of Peninsular Malaysia was investigated in a fixed bed torrefaction reactor with varying reaction temperature (200, 250, and 300°C) under a nitrogen atmosphere and single residence time (30 minutes). The distribution and yield of the biochar, bio-oil, and biogas were examined, and further characterization of the biochar was performed (proximate and ultimate, SEM, and FTIR analysis). The results indicated that with the increased torrefaction temperature, solid char yield decreases down to ∼ 52 % while bio-oil and biogas fluctuate between 7 - 28 % and 21 – 27 &, respectively. The proximate and ultimate analysis of the torrefied solid char showed that the fixed carbon, carbon content increased while volatile matter, moisture, hydrogen, and oxygen content decreased with temperature rise. From the SEM analysis, the torrefaction temperature causes an increase in biochar porosity. Lastly, from the FTIR analysis, it can be seen that there are degradation and formation of certain functional groups such as O-H, C-H, C=C, C=O, C-O, and C-C with torrefaction temperature variations.

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The Study of Coastline Changing and Total Suspended Solid Distribution Based on The Remote Sensing Data in Teluk Lamong Multipurpose Port Terminal

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IOP Conference Series: Earth and Environmental Science 2021年第1期698卷

作者： Widi Agoes Pratikto Ahmad Fitriadhy Muhammad Ilham Maulana Abiyani Choirul Huda Destyariani Liana Putri Liany Ayu Simatupang Nazariano Rahman Wahyudi Rendatiyarso Laksono Anggie Vibriyanti Rossari Dewi Ocean Engineering Departement Faculty of Marine Technology Institut Teknologi Sepuluh Nopember Surabaya 60111 Indonesia Department of Maritime Technology Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu Malaysia Ocean Engineering Study Program Institut Teknologi Kalimantan Kalimantan Timur 76127 Indonesia

Looking forward to the abovementioned conditions, this research is needed to elaborate on the effects of the reclamation to the marine resources in Teluk Lamong Multipurpose Port Terminal as the reclaimed product. In order to describe the impact of the port development, this study will analyze the shoreline changing, the current pattern modeling, as well as the Total Suspended Solid (TSS) modeling using the remote sensing data. The several numbers of expected objectives through this study are to get the set of scientific information on the shoreline changing in Teluk Lamong Multipurpose Port Terminal in the year of 2012 and 2020, to get the figure of current pattern in Teluk Lamong Multipurpose Port Terminal in the year of 2012 and 2020, and to elaborate TSS concentration through the modeling approach in Teluk Lamong Multipurpose Port Terminal in the year of 2012 and 2020. Hence, there is a set of methodologies and tools to cooperate with the information before and after the reclamation. The use of the Digital Shoreline Analysis System (DSAS) software to analyze coastline conditions. The using of Mike 21 to analyze the current pattern and TSS concentrations. In addition to the TSS analysis, it will also need a set of remote sensing data from the Google Earth Engine (GEE). The modeling and calculation give information about the End Point Rate (EPR) values and TSS values. The EPR values are 107.5 m/year, 59,625 m/year and 10,375 m / year. The TSS values are 0-20 mg/L, 20.1-40 mg/L, 40.1-80 mg/L, 80.1-120 mg/L and >120.1 mg/L. Moreover, the result shows the different values among the length of coastline, the current pattern, and TTS in the years 2012 and 2020. The difference in the coastline reaches 950 m at this latest 8 years. While it also brings the changing to the current pattern and sediment transport which show through its current velocity and sediment content per liter of seawater during high and low tide accordingly.

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Offshore responses using an efficient time simulation regression procedure 7th

Offshore responses using an efficient time simulation regres...

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7th International Conference on Marine Structures, MARSTRUCT 2019

作者： Ahmad, S. Z. A. Syed Abu Husain, M.K. Mohd Zaki, N.I. Mohd, M.H. Najafian, G. Razak Faculty of Technology and Informatics Universiti Teknologi Malaysia Kuala Lumpur Malaysia School of Ocean Engineering Universiti Malaysia Terengganu Kuala NerusTerengganu Malaysia School of Engineering The University of Liverpool Liverpool United Kingdom

ISBN: (纸本)9780367278090

Offshore structures are exposed to wind-generated random wave loading in the ocean environment and the response is often non-Gaussian characteristics. Consequently, simple procedures for derivation the probability distribution of extreme responses are not available. The most accurate method for predicting the extreme responses in such condition is the Monte Carlo Time Simulation (MCTS) technique. However, it is computationally very demanding as reliable results require a large number of simulations. Currently, finding shows that an Efficient Time Simulation (ETS) method offered a more efficient technique without sacrificing accuracy. This study is aimed to improve the ETS method by taking advantage of their excellent correlation between extreme surface elevation and their corresponding structural responses. Prediction of the 100-year extreme responses between proposed models (ETS-Regression) and the MCTS method will be investigated to establish their level of accuracy. In this paper, the technique could be used for both drag-dominated and inertia-dominated (quasi-static) responses. © 2019 Taylor & Francis Group, London.

关键词： Offshore structures

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KT driving cycle data collection and development using MATLAB mobile application

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AIP Conference Proceedings 2024年第1期2898卷

作者： Nurru Anida Ibrahim Siti Norbakyah Jabar Wan Nural Jawahir Wan Yussof Salisa Abdul Rahman Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu 21030 Kuala Nerus Terengganu Malaysia Renewable Energy and Power Research Interest Group (REPRIG) Universiti Malaysia Terengganu 21030 Kuala Nerus Terengganu Malaysia Energy Storage Research Group (ESRG) Universiti Malaysia Terengganu 21030 Kuala Nerus Terengganu Malaysia

Driving cycle is very important to the vehicle manufacturer and automotive suppliers mainly for product evaluation purposes. Driving cycle is as representation of traffic behavior in an area or city. This paper discusses about the driving data collection and development for Kuala Terengganu city using MATLAB Mobile application. The objectives of this paper are; to collect the driving data along the main road in Kuala Terengganu city using MATLAB Mobile application, to analysis the driving data stored in the cloud of MATLAB Mobile application and lastly to develop a Kuala Terengganu Driving Cycle. The methodology involves three major steps which are; driving data collection, driving data analysis and driving cycle development. The KTDC is successfully developed with average speed of 48.92 km/h and total of nine micro trips.

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Statistical analysis on effects of Covid-19 pandemic on secondary students’ performance in mathematics subject

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AIP Conference Proceedings 2021年第1期2355卷 060015页

作者： Syerrina Zakaria Siti Madhihah Abdul Malik Nazihah Binti Safie Mathematics program Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu 21030 Kuala Nerus Terengganu Malaysia

Starting 2020, the whole world faced covid-19 pandemic that was spreading across countries including Malaysia. Because of this pandemic, Malaysia government take immediate action to declare Movement Control order (MCO). This MCO gave seriously impact to almost sectors in Malaysia including economic, social and also education sector. We believed that, the students’ performance become decrease during MCO. Although classes were continued online, teaching and learning activities are believed less effective than face-to-face classes. This study was conducted to measure the secondary school students’ performance during MCO for Mathematics subject. There were 2 set of mathematics score data before and during MCO considered in this study. The independent T-test was conducted to test is there any significant difference of performance between gender for both data sets. Meanwhile, the paired T-test was conducted to evaluate the significant different of student performance before and during MCO. It was found that, there was significant different of students’ performance before and during MCO which, the performance during MCO become declined. One of the possible factor that was gave significant effect to the student’ performance was lack of effectiveness teaching and learning activities using online platform. So, for future research, a study should be done in order to indicate the significant factor that give effect to students’ performance if teaching and learning activities carried out online.

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The influence of magnetic field on wall shear stress in power law fluid flow of blood

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AIP Conference Proceedings 2021年第1期2365卷

作者： Amira Husni Talib Ilyani Abdullah Nik Nabilah Nik Mohd Naser 1Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu 21030 Kuala Nereus Terengganu Malaysia

The profile of wall shear stress in non-Newtonian fluid which power law fluid through a cosine shape stenosis is analysed in this study. This study also reveals the effect of magnetic field as an external force on wall shear stress. Wall shear stress is an important flow characteristic in order to determine the behavior of blood. The governing equations employing the blood flow in the cylindrical coordinate system and then solved by finite difference scheme in staggered grid known as Marker and Cell (MAC) method. The influence of various parameters on wall shear stress profile are evaluated via graphical results. The results show that wall shear stress increases when magnetic field applied and higher at the stenotic region.

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Group decision making-based TODIM under Linguistic Aggregation Majority Additive operator

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Journal of Physics: Conference Series 2021年第1期1988卷

作者： N N N C Rosli B Yusoff A F Wahab E N Madi Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu Kuala Nerus Terengganu 21030 Malaysia Faculty of Informatics and Computing Besut Campus Universiti Sultan Zainal Abidin Malaysia

This paper proposes an extension of TODIM (interactive multi-criteria decision making) under group decision making (GDM) using the Linguistic Aggregation Majority Additive (LAMA) operator. TODIM is an effective method in modelling experts' psychological behaviour in the decision-making process. However, under the GDM, the method is based solely on the average of all experts' judgments without any consideration to soft aggregation processes that include majority and/or minority concepts. In this work, the LAMA operator is used to be integrated with TODIM-GDM to aggregate the experts' opinions with respect to the majority concept under the linguistic domain. This is to provide a greater flexibility in reaching a consensus instead of only considering equally average using the classical averaging operators. Two linguistic representations, namely, symbolic approach and 2-tuple linguistic approach for LAMA operator are proposed to be utilised in the method. A numerical example in investment selection problem is provided to illustrate the applicability of the proposed method. Finally, the comparison of these two linguistic approaches is presented. The results show that LAMA under the 2-tuple linguistic approach is preferable to the symbolic approach in case of there is a tie between alternatives in the final ranking.

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Mechanical and corrosion properties of electrochemically deposited Ni-Nb2O5composite coatings on mild steel for marine applications

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Sensing technology 2023年第1期1卷

作者： S. Varadaraj Thomas Pinto B. M. Praveen Bharath K. Devendra J. R. Naveen Kumar Wan Mohd Norsani Bin Wan Nik a Department of Mechanical Engineering Srinivas University Institute of Engineering & Technology Mangaluru Karnataka India b Department of Chemistry Srinivas University Institute of Engineering & Technology Mangaluru Karnataka India b Department of Chemistry Srinivas University Institute of Engineering & Technology Mangaluru Karnataka Indiac Department of Chemistry M. S. Ramaiah College of Arts Science and Commerce Bengaluru Karnataka India d Department of Electronics and Communication Engineering Srinivas University Institute of Engineering & Technology Mangaluru Karnataka India e Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu 21030 Kuala Nerus Malaysia

The Nickel-Niobium Pentoxide Composite Coating is formed by electrochemically depositing nickel (Ni) and niobium pentoxide (Nb2O5). An investigation was conducted on corrosion resistance, microhardness, roughness, and deposit morphology. A comparison was made between composites and pure nickel coatings in scratch and contact angle tests. There is a homogeneous particle distribution with a maximum particle size of 99.27 µm in the coating. Adding Nb2O5particles to the composite coating improved corrosion resistance with a maximum inhibitory efficiency of 87.9%. An increase of 44% in microhardness was observed for the Ni-Nb2O5composite coating. The scratch test revealed no adhesion cracks and delamination at the surface of the cracks. The composite coating exhibited a hydrophobic nature in the contact angle measurement.

关键词： Electrodeposition nickel niobium oxide corrosion resistance

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On the topological indices of the line graphs of polyhenylene dendrimer

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AIP Conference Proceedings 2021年第1期2365卷

作者： Nur Hafiza Azwani Mohd Saidi Mohamad Nazri Husin Nur Baini Ismail 1Faculty of Ocean Engineering Technology and Informatics University Malaysia Terengganu 21030 UMT Kuala Nerus Terengganu Malaysia

Chemical graph theory are usually use in topological indices for studied their bioactivitty and physical-chemical characteristic. These topological indices mostly use in the fields of chemistry, gene therapy and other areas of applied sciences. In our article, we study the line graph of one of the families of Polyphenylene dendrimer, namely D3[n]. We also compute their topological indices of the line graph of Polyphenylene dendrimer. In additional, to makes more interesting, we analyzed and showed the behavior of above computed topological indices towards Polyphenylene dendrimer.

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