bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Hybrid Haptic Feedback Stimulation Device to Recover the Missing Sensation of the Upper Limb Amputees
Authors: Nemah Mohammed Najeh , Aldulaymi Omar Hammad , Low Cheng Yee , Che Zakaria Noor Ayuni , Mohamaddan Shahrol 
Published: June 2020

Abstract
Providing sensory feedback for prostheses users increases the manipulation ability, as well as introduces a feeling of the embodiment. A novel hybrid haptic feedback stimulation system of the amputees of upper limb mutilation was designed, developed, and evaluated in this study. The haptic wearable device was built by mean of single servomotor as a pressure feedback display and a pair of vibration motors as a vibration feedback display. Accordingly, the pressure display is responsible for conveying the missing sensing of the contact pressure and its force level. While the vibration display has utilized to provide an indication about the continued contact pressure. Able-body participants are engaged to evaluate the performance of the proposed feedback stimulation system. The results show that the participants are able to distinguish the touch, the start of touch, the end of touch, and the range of force with 100 % accuracy. While 96 % and 88 % of the able-body participants are capable to identify the grasp and the slipping objects, respectively. Furthermore, the ability of the proposed haptic wearable device to convey the tactile sensory information to the user’s brain without confusing or pre-training was improved.
Aerodynamics Analysis on the Effect of Canard Aspect Ratio on Blended Wing Body Aircraft using CFD Simulation
Authors: Ali Z. M. , Kuntjoro W. , Wisnoe W. , Ishak I. S. , Katon M. Z. , Ahmad N. 
Published: June 2020

Abstract
Blended Wing Body Aircraft (BWB) is an unconventional aircraft that combined the conventional and flying wing aircraft’s design. The unique design of the BWB offers a high fuel efficiency, low noise, and large payload volume for the size of aircraft. However, the BWB is unstable due to the absence of the its vertical stabilizer. A possible solution to improve this problem is using a horizontal control surface, the canard. For this purpose, the numerical simulation using NUMECA Computational Fluid Dynamic (CFD) software were conducted to obtain the aerodynamics forces subjected on this aircraft. The lift coefficient (CL), drag coefficient (CD) and moment coefficient (CM) are analysed at Mach number 0.1. The study is specifically to discuss the effect of canard setting angle ™ of BWB from ™ = -10° to 10° in that particular of aspect ratio (AR 2, 4, 6 and 8) towards aerodynamics parameters, CL, CD, and CM.
Improving Teaching and Learning Experience in Engineering Education Using Sentiment Analysis Techniques
Authors: Kaur Wandeep , Balakrishnan Vimala , Singh Baljit 
Published: June 2020

Abstract
Students are the golden commodity when it comes to ringing in revenue for academic institution. Therefore, it is vital to ensure the opinions and feedback of students is taken seriously to ensure continuous improvement in the teaching and learning experience. In an era of digital information and rich opinionated text being easily available, it is crucial to look into different forms of data analysis from which vital information can be extracted. Sentiment and emotion analysis are one such area of research that looks to extract implicit information from written text and analyse data that would be able to provide a deeper insight compared to conventional measures. This paper is an extension of a previously conducted study of analysing emotion as well as sentiment of students’ feedback taking Thermal Engineering (MEC551) from Universiti Teknologi Mara (UiTM). Supervised learning technique was adopted and data analysed revealed students were biased towards assignment and quizzes as these would help improve their carry forwards for the subject and the preference of chapters to the exam was more for conduction and convection compared to others which had more mathematical related calculation.
Computational fluid dynamics analysis on the effect of flow distribution on pedestrian in urban area
Authors: Abu Kasim Haszeme Bin , Bin Mohamad Mohd Faizal , Alias Siti Khadijah , Khalid Ahmad Hilmi , Bin Zainol Muhd Azhar , Ahmad Tajudin Nur Asyikin Binti 
Published: June 2020

Abstract
Buildings in urban area consist of various heights and building arrangements. Meanwhile, the pedestrians at the area must be considered for their wind comfort and wind safety. This is because, near high-rise buildings, high wind velocities are often introduced at pedestrian level that can be experienced as uncomfortable or even dangerous. Nowadays feasibility Computational Fluid Dynamics (CFD) for the assessment in wind engineering such as wind comfort and safety of pedestrian are very demanding. Hence, this study is conducted using CFD to analyses the effect of different building heights on the wind flow distribution towards pedestrian. The study was done on two different cases based on two different buildings (uniform height and non-uniform height) with squared and staggered arrangements. The turbulent wind over the pedestrian was acquired by solving the 3D steady state Reynold’s-Average Navier-Stokes (RANS) equations using RNG k-ε turbulence closure model. The results show that changes on the height of the buildings varies from the center of the urban canyon based on the vorticity of the flow distribution.
Effect of Welding Preheats on Metallurgical Analysis and Microstructural Development
Authors: Mazni Mazleenda , Bin Ismail Muhammad Hussain , Bin Pahroraji Hazriel Faizal , Malik Norjasween Abdul , Mohd Hamami Mohd Ghazali Bin , Sukarman F. , Sulong Nurulsaidatulsyida 
Published: June 2020

Abstract
This project is to study the effect of welding preheat on metallurgical analysis and microstructural development. Variables such as current, speed of welding and size of specimen were fixed. In the present work, a mild steel plate with thickness of 100 mm and width size of 20 mm was used. SMAW (Shielded Metal Arc Welding) technique was chosen as it is the easiest way to perform and widely used in oil & gas and marine industries. Three different preheat temperatures were performed during the study; ambient temperature (no preheat), between 60 °C to 70°C and greater than 200 °C. The study emphasizes on the minimum preheat temperature that produce good quality welding by taking into account some of metallurgical aspects; microstructure and macrostructure development, hardness distribution at important areas in weld (Heat Affected Zone, parent metal and weld area) through thickness. From this study, code American Welding Society (AWS) D1.1 was used as a reference and it stated that for plate that has 100 mm thickness the preheat temperature should be in the range of 60 °C and 70°C. The result of microstructure and macrostructure showed that the depth of penetration was not vary too much. Hardness measurement, macro and microstructure observation were performed in order to obtain a good correlation exist between these parameters studied.
A Case Study on Change Management Readiness for an Oil & Gas SME Company in Malaysia
Authors: Baharudin I. S. , Abdullah B. , Mohd Salleh N. A. , Shariffudin P. 
Published: June 2020

Abstract
Change management is vital in sustaining and remain competitive in a volatile environment. A well-planned change management effort has been craved by organizations in need as being more profitable, reputable and sustainable is the ultimate achievement. These changes to the pillars of the organization normally are more transformative than incremental in nature. All arrows pointing to the single biggest step an organization is to embark if they choose to ride the path of a successful change management execution – the change management readiness. This paper discusses the aspects of change management readiness which entails the need for readiness, the activities within readiness, the factors of leadership, communication and awareness that embodies the readiness as a whole. A case study of an actual organization participated in the study using leadership profiling assessment, organizational communication survey, change management awareness survey and maturity assessment. The results from this study is realistic and impactful to its readers. This paper validates the underlying theory of the three factors in a real industry environment and how successful change management readiness can be obtained with diligent planning and execution.
Tool-path Generation for Groove Machining Feature
Authors: Zubair Ahmad Faiz , Abu Mansor Mohd Salman 
Published: June 2020

Abstract
In this study, algorithm in generating machining sequences and tool-path for groove machining features are developed. The algorithm is based on ruled-based method and enhancing automatic feature recognition (AFR) via volume decompositions method. From the position of the vertex in z-axis and x-axis directions, machining sequences can be determined, and machining features can be sorted out. From the sub delta volume (SDV) generated from the recognized features of 3D part model, vertex positions of each SDV is determined thus positioning of the tool-path can be obtained. To validate the generated machining sequence and tool-path, one workpiece has been assigned to the algorithm. This workpiece is also tested with commercial software CAM function. The result shows that the developed algorithm is capable in generating the tool-path and can be visualized.
Crash Performance of Double Hat Column Subjected to Compression Loading
Authors: Salwani MS , Mohamad Hisyam K 
Published: June 2020

Abstract
There are many types of structure designed to act like an energy absorber. Energy absorber is the one that responsible to absorb energy during crashes. An energy absorber is a system that converts, totally or partially, kinetic energy into another form of energy. Energy converted is either reversible or irreversible. One of the examples of the most important structure to absorb energy is the crash box. Crash box can be found in many shapes, and double hat column is the common one. The objective of this study is to study the effect of heat treatment and notch on the performance of the double hat column structure. The results of different specimens were compared in terms of tensile strength and also energy absorbed. It was found that the tensile strength and energy absorbed was slightly higher for specimens that were quenched in lower temperature and longer time and for notching distance of 20mm.
CAE Analysis for Disposable Mouth Mirror Based on Autodesk Moldflow Plastic Insight
Authors: Saedon J B , Azlan Mujahidah Zaira , Adenan Mohd Shahriman , Azuddin M 
Published: June 2020

Abstract
This study is carried out to focus on computer aided engineering analysis on dental toolkit for disposable mouth mirror by using Autodesk Moldflow Insight (AMI) software. Disposable mouth mirror designs contain with a very small and precise features for it handles and fix angle between shank and working area (mirror). A 3D cad model of disposable mouth mirror has been construct and imported to the simulation software. The part has been analysed with thermoplastic material of Polypropylene (PP) as a part material for its light weight and durability. The simulation and analysis by moulding software package is used in order to determine the best range of operating parameter for injection moulding process in furtherance to get the low manufacturing defect. The process parameters that has been selected includes mould surface temperature, melt temperature, flow rate and cooling time during the injection moulding process. At the end, the best range of operating parameters has been proposed and simulates to study the product behaviour.
Analysis of distortion of coupled process forming to welding using fem-based virtual manufacturing with experimental verification
Authors: Ishak D P , Prajadhiana K P , Manurung Y H P , Sulaiman M S , Saberi M K A 
Published: June 2020

Abstract
In this paper, the numerical model of coupled process forming to welding by means of FEM is developed in order to analyse the displacement. Simufact. Forming and Simufact. Welding are utilized to execute a thermomechanical FEM analysis of forming to welding coupled process. Prior to welding process, a sheet metal bending process is performed in order to bend the 2mm plate into a U-shaped geometry. The material used for this process is S235 low carbon steel along with filler material ER70s. Goldak’s double ellipsoid model is chosen as the heat source model for GMAW simulation. A series of sheet metal bending and GMAW experiment is executed in order to verify the distortion result produced by FEM analysis. ABB IRB 2400/16 is the assigned robotic welding equipment used in GMAW process while sheet metal bending machine SUNFLUID 800/2007 is utilized for sheet metal bending process. For the calibration model, a forming force between FE simulation will be compared with the forming force of experimental bending process. The final results have shown that the distortion result of FEM analysis of coupled process forming to welding shows a good agreement with the experimental coupled process.
Anatomical modelling and simplified modelling in total hip replacement: difference in contact mechanics perspective
Authors: Manap M F A , Shuib S , Yamin A F M , Shokri A A 
Published: June 2020

Abstract
Total hip replacements (THR) is a surgical operation to replace defect bone at the hip joints. The rate of succession of THR post-operative still debatable as complication and failure rate of the prosthesis still exists. Edge-loading, dislocation, fracture and longevity are among the concerned issues with many studies were conducted via software analysis. This study aims to simulate the difference of anatomical and simplified modelling in finite element analysis (FEA) and investigate edge-loading effect at different inclination angle in both modelling conditions. A CT scan hemi-pelvic model was reshaped and converted into 3D model in SolidWorks and the next step, FEA was conducted in ANSYS Workbench V16 at different inclination angle. Anatomical and simplified model were run in ANSYS Workbench and the results were recorded. The anatomical modelling produced less contact pressure range 26% to 51% compared with simplified modelling at four inclination angle conditions. Von Mises stress and total deformation in anatomical also produced reduction of more than 65%. Both modelling conditions shows agreement that elevated inclination angle had induced higher contact pressure at superior region of acetabular cup. The inclusion of hemi-pelvic model gives lower value recorded in FEA as contact stress dispersed into the bone that already integrated with the implant given statistically significant (p<0.05). Noteworthy to include bone integration into implant during FEA study to produce unambiguous contact mechanics studies.
Emission characteristics of biodiesel ratios of 10%, 20%, and, 30% in a single-cylinder diesel engine
Authors: Jalaludin Helmisyah Ahmad , Abdullah Nik Rosli , Sharudin Hazim , Asiah A R , Jumali Muhammad Firdaus 
Published: June 2020

Abstract
This research is devoted to investigate the effects of biodiesel ratios of 10%, 20%, and 30% to the emission of single cylinder diesel engine. Fuel blends comprise of 10% (B10), 20% (B20), and 30% (B30) with adding 0.1 ml of additives to each litre of fuel blend volume are put to the test on a diesel engine, comparing each aspect to differentiate the best fuel blend. A reference experiment with 100% diesel (D100) had been done to have a clear view of the working diesel engine emissions. These blends were used for testing in a four stroke, vertical single-cylinder, air-cooled diesel engine at a constant speed of 1500 rpm as with varying engine load of 2, 4, and 6 Nm. Exhaust emissions of nitrogen oxide (NOx), carbon monoxide (CO), carbon dioxide (CO2), and unburned hydrocarbon (HC) are taken into account. The results show that the increase biodiesel blend in fuels does increase the NOx and CO2 emission with steady increase of load. This is because these emissions relate to the complete combustion, high post-combustion and high oxygen content increase the amount of emission. Besides, the results prove that the higher percentage of biodiesel in the blends provides lower emission of CO and HC. Lower CO and HC emission due to better combustion efficiency as it reaches better overall combustion, producing higher energy output and better emissions. Thus, the findings provide helpful information for researchers to understand the technology of biodiesel and a possible substitute for the current diesel for a better fuel source.
Enhanced application of virtual manufacturing: influences of material parameters on numerical Simulation of forming process
Authors: Sulaiman M S , Manurung Y H P , Graf M , Bauer A , Awiszus B , Omar A R , Kuntjoro W , Adenan M S 
Published: June 2020

Abstract
This paper describes the sensitive influence of material parameters on the final numerical simulation result of forming process as one of virtual manufacturing applications. Although existing commercial software system provide predefined material properties, these can nevertheless differ with the actual material which might result in inaccuracies. Hence, material data needs to be enhanced to gain better simulation results. This investigation begins with development of flow curve of steel DC04 (1.0338) based on compressive test with various effective plastic strains under consideration of rolling direction. Further, Forming Limit Diagram (FLD) is to be defined by using Nakajima test to determine the strains up to the fracture for deep drawing process. In this research, the enhanced application on sheet forming process is modelled and simulated as well as verified under laboratory condition using an oil-hydraulic press. It can be demonstrated that the numerical simulation results are very sensitive due to the essential differences in material properties. However, this procedure will lead to time and cost intensive measurements of the material behaviour, which is mandatory for an accurate forecast of real forming process.
The Effects of Sintering Schedule on Alloy Powder ASC 100.29 Compacts Formed at Elevated Temperature
Authors: Hasan Z , Ismail M A , Rahman M M 
Published: June 2020

Abstract
This paper presents the outcomes of an experimental investigations on the effect of sintering schedule i.e. holding time and temperature to the final properties of alloy powder ASC 100.29 formed through uniaxial die compaction process at elevated temperature. A lab-scale powder compaction rig with uniaxial compression and installation of heater was designed and fabricated in order to produce green compact from powder mass at elevated temperature. Alloy powder ASC 100.29 (99.7 wt%) and lubricant, zinc stearate (0.3 wt%) were mixed mechanically for 30 min at a rotation of 30 rpm. The powder mass was compacted at 150°C via simultaneous upward and downward uniaxial compression load of 425 MPa. Defect-free green compacts were generated from the compaction and were subsequently sintered at 1000°C using a custom argon gas fired furnace at three different sintering rates, i.e., 5, 10 and 15°C/min for three holding times, i.e., 30, 60 and 90 min, respectively. The final products were characterized through their physical, electrical and mechanical properties and their microstructures evaluated. The results revealed that the sample sintered for a longer period of time, i.e. 90 minutes at the slowest sintering rate, i.e. 5°C/min obtained the better final characteristics.
Experimental research and modelling of the response of magnetorheological elastomers to cyclic load
Authors: Petríková Iva , Marvalová Bohdana 
Published: June 2020

Abstract
Magnetorheological elastomers (MREs) belong to the new group of functional materials called “smart”. The MR effect is increased by choosing the material of the particles with high permeability. The dependence of dynamic moduli and damping of MREs on the external magnetic field and the applied frequency of cyclic shear deformation was studied. Samples of MRE were made of the silicon rubber matrix filled with micron-sized particles. The dynamic stiffness of MRE depends on magnetic flux density and rises with increasing frequency. The loss factor of MRE samples is controlled by the magnetic flux density and it depends also on the testing frequency. The behaviour of viscoelastic materials under uniaxial loading may be represented using rheological models composed of elastic and viscous elements. The dynamic variables storage and loss moduli and loss tangent were determined on the basis of the fitted parameters of the fractional model.
Antioxidant Activities Bioactive Compound of Ethyl Acetate Extracts from rose myrtle Leaves (Rhodomyrtus tomentosa (Ait.) Hassk.)
Authors: Salni  , Marisa Hanifa , Repi Lili Arista 
Published: June 2020

Abstract
One of the plants traditionally used as medicine is rose myrtle (Rhodomyrtus tomentosa (Ait.) Hassk.). Rose myrtle has the potential as an antioxidant because it has secondary metabolites including flavonoids, phenols, terpenoids, tannins, saponins, and steroids. The purpose of this study was to determine the fraction that has antioxidant activity and obtain antioxidant compounds from ethyl acetate extract of rose myrtle leaves. The research methods included extraction by Soxhletasi, fractionation by vacuum liquid chromatography, purification of compounds with gravity columns, and antioxidant activity test using the DPPH method. The results obtained 32% yield of ethyl acetate extract which was then followed by fractionation. The fractionation results obtained 13 fractions. The fractions that have antioxidant activity namely fractions 5-6, 7, and 8. The fraction was continued to purification and obtained by compound E.1, compound E.2 from the essential oil, and compound E3 allegedly rhodomyrtone. The bioactive compound determined by IC50 value obtained that E1, E2 and E3 that have IC50 value of 218, 207 and 90 μg/mL, respectively. The bioactive compounds of ethyl acetate extract have strong antioxidant activity in E3 and very weak in E1 and E2 compounds.
Methylene Blue Adsorption Isotherm on Spirulina sp. Microalgae Biomass Coated by Silica-Magnetite
Authors: Kausar R A , Buhani  , Suharso  
Published: June 2020

Abstract
In this study, it has been performed modification of Spirulina sp. algae biomass with silica (HAS) coated with magnetite particles (HASM) and its adsorption test on a solution of methylene blue dye (MB) in solution. The identification of functional groups from HASM adsorbent was studied using infra-red (IR) spectrophotometer, the degree of crystallinity of the material was determined by X-ray diffraction (XRD), while the morphology and HASM constituent elements were analyzed by Scanning Electron Microscopy-Energy-Dispersive-X-Ray (SEM-EDX). The HASM adsorption isotherm of MB solution was studied by applying adsorption experiments using the batch method. The concentrations of MB dye in the adsorption process were analyzed by a UV-Vis spectrometer. Adsorption of 100 mg L−1 MB dye solution by HASM adsorbent at pH of 6 with a contact time of 60 minutes resulted in an adsorbed MB amount of 90.90 mg g−1. The adsorption isotherm model of the MB dye solution in the HASM adsorbent tends to follow the model of Freundlich adsorption isotherm. The adsorbent HASM is the effective adsorbent to absorb MB dye in solution.