Displaying publications 21 - 40 of 105 in total

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  1. Abbas, M.R., Dasin, D.Y., Aliyu, A.S.
    MyJurnal
    Rural communities in sub Saharan Africa have spent considerable time and energy in
    their quest for obtaining cooking requirements. The utilization of solar energy for cooking is not a
    widespread practice despite the fact that African countries are abundant in solar resources. A solar
    cooker uses the freely, environmentally friendly, healthy and renewable solar energy resource as its
    energy source, thus indicating its economical and sustainability advantages. This paper demonstrates
    the possibility of using solar energy as an alternative to the traditional system of cooking local
    foodstuffs within the rural communities of North-East Nigeria. The cooker was designed and fitted
    with a black pot and an automatic tracking mechanism that can track the sun at 10° per hour,
    following the sun movement for use in tropical dry climates. Parboiled rice of 1kg each was cooked
    completely in 75 minutes at an average solar beam radiation of 623W/m2
    after attaining maximum
    temperature of 368K under clear weather condition. Whereas 1kg of beans and 1.1kg of yam were
    cooked in 90 minutes at an average solar beam radiation of 536.5W/m2
    and 430.1 W/m2
    respectively.
    The highest temperature reached for this test was 368K. The results indicated that a parabolic solar
    cooker can easily cook these varieties of Nigerian local dishes within the range of 75 to 90 minutes
    under the clear weather condition of Bauchi, north–east of Nigeria.
  2. T.R. Ibrahim, Jamil, M.M., Adamu, M.I., Hashim, G. A.
    MyJurnal
    In this paper, Reynolds average Navier stokes models simulation was computed
    with standard k-є, realizable k-є and SST k-w.The three models were proposed to forecast the
    turbulence flow behaviour inside a rectangular channel with two baffle plates. The geometry
    and the grid were generated using commercial CFD software fluent. The flow behaviours of
    three models were characterized based on positions of the entrance to the first baffle,
    positions between first and second baffle and lastly the second baffle. At the three different
    positions the three models studied have demonstrate differences in the velocity profiles and
    separation range. Comparison with previous literatures shows applicability of these three
    models to produce velocity profile characteristics and separation behaviours. Even though
    some of the models have shown slight deviation from the experimental results but in general
    the three models were considered to be in close agreement with most published literatures.
  3. Mat Salleh, N.S., Din, R., Abdul Manaf, S.Z., Hamdan, A., Karim, A.A.
    MyJurnal
    A questionnaire Usability Self Learning Module is developed to measure the overall
    development of the learning module Adobe Photoshop constructs involving three modules, module’s
    usability, applying theory of the cognitive load and minimalist. The study was conducted to produce
    empirical data on the reliability and validity of the Usability of Adobe Photoshop’s Module
    questionnaire using the Rasch Measurement Model. A survey was conducted on 120 participants who
    attended the course Adobe Photoshop using the modules studied. The questionnaire is distributed
    using one of the Web 2.0 technology platform, Google Docs. The reliability and validity of the
    Usability Adobe Photoshop’s module questionnaire were tested with the Rasch Measurement Model
    using the Winstep version 3.69.1.11 program.The Rasch analysis showed that person reliability index
    is 0.87 and item reliability of 0.94. In term of item polarity, each item was able to contribute to
    measuring the effectiveness of the learning module development measurement since the PTMEA
    CORR exceeded 0.30, in specific between 0.50 to 0.78. There are 27 items in the questionnaire, which
    is divided into 3 different constructs. Each construct contains 7 to 11 items. The unidimensionality test
    conducted showed standardized residuals variance of 49.8%, with the biggest secondary dimension
    in the first constrast amounting variance of 6.5%. Item fit analysis showed that none of the items
    needed to be dropped since infit mean square values are between 0.73 and 1.39, and the outfit mean
    square values are between 0.70 and 1.40. Items in the questionnaires are ordered in a continuum of
    increasing intensity for the measurement of the Usability of Module construct. This shows the validity
    of the constructs in Usability of the module.The Rasch Measurement Model shows that the Usability
    of the Module has a high reliability and validity to be used for measuring the usability of the module
    and the application of cognitive load theory and the theory of minimalism
  4. Razali, A.A., Sadikin, A.
    MyJurnal
    This paper presents a numerical simulation of flow in a microchannel heat sink. The channel
    was defined as a dimension with less than 1.0milimeter and greater than 100.0micrometer. The ANSYS
    CFX 2015 was used to predict the flow in the microchannel. Besides, simulations were undertaken to
    determine the flow of the fluid within the microchannel in three different models. Therefore, three
    different models were employed for this study. The first model was a square-shaped channel with 0.5mm
    width and 0.5mm height constructed along 28.0mm channel length. The second and the third models
    were in rectangular shape. The differences between these models were their width and height of
    channel. The dimension for the second model was 0.75mm height and 0.5mm width (rectangular A),
    while the dimension for the third model was 0.5mm height and 0.75mm width (rectangular B). All the
    microchannel heat sink models had been simulated and showed results for pressure, temperature, and
    velocity inside the microchannel. The results were compared for each model and the data had been
    validated from published data. In addition, the initial velocity was set in a range between 0.1m/s and
    0.5m/s. The highest pressure drop was recorded for the square microchannel. It was 58.12% higher
    than the pressure drop found in the rectangular microchannel with 0.75mm width, while 0.02% closer
    with the 0.75mm-height rectangular microchannel. Furthermore, there was a 33.34% of temperature
    difference, which had been higher for the square microchannel. Nevertheless, the highest velocity of
    0.57m/s was recorded at the outlet of the microchannel. These had been consistent with other published
    data.
  5. Isa, N. M., Mohamad Rushdi, R.A., A. Sadikin, Basharie, S.M.
    MyJurnal
    A method based on Computational Fluids Dynamics (CFD) was used to analyse the flow
    behaviour in the Biodiesel reactor with 6-blade at 45° pitch blade turbines. The study, which was based
    on the turbulent flow, had been associated with three sizes of the blades installed in the reactor by using
    the standard k-ε turbulence model. The study also included the pitch blade turbines that were installed
    at three clearances from the bottom in the reactor by using the standard k-ε turbulence model. The
    results showed that the flow behaviours differed for the three various locations, which were installed at
    C=T/4, C=T/2, and C=3T/4 for D=T/3. The results also showed that the flow behaviour had been
    different for the three impeller diameters installed at C=T/4. Besides, good quantitative agreement for
    velocity distribution was obtained. Good velocity distribution in the reactor was produced by D=T/3.
    Moreover, a comparison between the three impeller diameters in terms of velocity distribution
    suggested that the discharge flow from the smaller impeller had stronger axial flow during the mixing
    process.
  6. Supri, A.G., Siti Hajar, M.D., Jalilah, A.J.
    MyJurnal
    Blends of poly (vinyl chloride) and poly (ethylene oxide) with the addition of carbon black
    as filler was prepared via solution casting technique to fabricate a conductive polymer film. Besides,
    poly (ethylene glycol diglycidyl ether) (PEGDE) was added into the formulation in order to improve its
    properties. The surface morphology of the conductive polymer film was characterized via scanning
    electron microscope (SEM). The results showed that the conductivity of the film was greatly enhanced
    by incorporating the PEGDE as the surface modifier in the PVC/PEO conductive polymer film.
  7. S. Suhaili, T. Watanabe
    MyJurnal
    Cryptographic algorithm has become one of the most important aspects in hardware
    implementation of embedded security system design. Message Digest (MD) is one of the cryptographic
    algorithms that can be used in any security design application. Nowadays, designing the high speed,
    low power, and small area implementation of cryptographic algorithms on reconfigurable hardware is
    one of the critical subjects for hardware application. The purpose of this paper had been to analyse the
    structure of MD5 hash function for high performance implementation in order to obtain small area
    implementation, as well as to increase the speed of the design on FPGA. In this paper, the frequency
    maximum for MD5 design with both grey and binary signal encoding is discussed. The results retrieved
    from the analysis showed that the differing results were caused by the switching bit of the signal input.
    Besides, the frequency maximum of MD5 that employed binary signal encoding provided the highest
    frequency maximum with smaller area implementation. By using grey signal encoding, the frequency
    maximum was almost similar to the MD5 binary signal encoding, but it suffered larger area
    implementation. On top of that, this research focused on timing and area implementation of the design,
    where TimeQuest timing analyser was applied to optimize the output of the desig
  8. Parsazadeh, N., Ali, R.
    MyJurnal
    Despite of the advancement of technology in the present internet age, many college students
    lack the information and communication technology (ICT) literacy skills like evaluating those necessary
    to navigate, as well as using the information available today. Evaluating the quality of information
    sources encompasses students’ ability to determine relevance, accuracy, and overall credibility of
    sources and information. Moreover, the quality of information found online is extremely variable
    because anyone can post data on the internet, and not all online sources are equally reliable, valuable,
    or accurate. From a study conducted on diploma students’ assignments using rubric at an international
    university in Kuala Lumpur, it was found that there was a problem in digital information evaluation
    skills and lack of ability in using evaluation criteria, including authority, accuracy, currency,
    objectivity, and coverage on digital information, as well as sources among diploma students. The future
    work of this study will be the use of mobile devices in collaborative and interactive learning to improve
    digital information evaluation skills among diploma students. This approach does not only improve the
    students’ learning attitude, but also enhances the effectiveness of learning.
  9. Suntharamurthy, R., A. Anuar, F. Mahamud
    MyJurnal
    This paper describes the process of designing a wheelchair with the main aim of making it
    compact and lightweight. A wheelchair is a common device used to assist in terms of mobility for those
    with difficulty to walk. Most conventional manual wheelchairs are heavy and bulky, even after they are
    folded. The designed wheelchair in this research is able to reduce the weight approximately by 30%.
    The wheelchair volume after folding is also reduced significantly. Besides, the designed wheelchair was
    evaluated by using 3D CAD software to analyse the strength and possible material failure. Moreover,
    a virtual mannequin was used to evaluate the geometry and the comfort of the design. On top of that, a
    scale down prototype was produced by using a 3D printer to evaluate the fold-ability function of the
    wheelchair.
  10. Aqilah, A., Low, C.Y., Muthmainnah, N.
    MyJurnal
    This paper presents the work of investigating and comparing the uses of CRS and QTC Pills
    as a tactile sensor material for Robotic Hand application. The materials were tested for their resistivity
    characteristics to determine the data reproducibility of the materials. The experiments were conducted
    based on three parameters; the supply voltage, the separation gap, and the sensor construction against
    the force/ load that had been exerted onto the materials. The results showed that CRS could cover the
    lower loading range when compared to QTC Pills. However, the data reproducibility of QTC Pills was
    better compared to those of CRS, thus making it more suitable to be used as a material for tactile
    sensing application. Therefore, this paper highlights the potential of these two materials as a tactile
    sensing transducer, and later, can be used as a useful guideline when designing a tactile sensor with
    these materials.
  11. Suriania, M.J., Alib, A., Khalina, A., Sapuan, S. M.
    MyJurnal
    In this study, fatigue failures of bio-composite materials were predicted due to
    manufacturing defects. Kenaf bast fibres were used to fabricate a bio-composite material with epoxy as
    a binding material. The bio-composites were manufactured by using a hand lay-up process. The defects
    in the Kenaf/epoxy bio-composite were determined by a non-destructive technique using Infrared
    thermal imager. Besides, the thermography analyses were verified via optical microscope and scanning
    electron microscope (SEM) investigations. Determinations of fatigue, as well as damage had been
    predicted, and it was found that the damage could be fixed with the predicted results.
  12. Tey, L.S., Kolodziejek, N.
    MyJurnal
    This study presents traditional brick making in Central Aceh in Indonesia,
    specifically in Silih Nara sub district. According to official statistics Silih Nara since 2008
    remains the poorest area of central Aceh. Traditional brick making is the biggest industry in
    the area besides agriculture. Previously no research has been conducted about bricks quality
    and brick yards development in sub district. Data from the research can be use in study of
    SMEs recovery after earthquake that hit Aceh in 2013. Due to reoccurring natural disasters in
    the area it is important to improve quality of bricks, which are used to rebuild dwelling houses
    and public facilities. This study describes methods of brick making in Silih Nara and quality of
    the bricks in order to recommend changes in production which can strength final product.
    Through SWOT analysis of brick industry, some recommendations were suggested for brick
    makers in Silih Nara and local government to improve bricks quality, industry sustainability.
  13. William, J.J., Chowdhury, I.A., Suki, N.M.
    MyJurnal
    Customer care centres of Telecom Industry play vital role in telecom business field last
    few years. The capital of Sabah, Kota Kinabalu is the place for telecom service providers to promote
    the best service and grab the market. In this geographical location, efficiency and service excellence
    are the two major goals for customer care centre as other part of Malaysia. Efficiency depends on
    speed and delivery that leads to get excellent service. The objectives of the research is to identify and
    explore the influential factors of the service experience in customer care centre for telecom industry in
    Kota Kinabalu, Sabah, Malaysia. Based on the first part of the research, it was identified the critical
    factors of service experience of customer care centre to eliminate the rigidity of service near future in
    the industry. Questionnaire survey was used for this research because the research method was
    quantitative and experimental. Data were collected from the people who are attached with the
    customer care centre activities of telecom industry in that region in terms of usage of the product or
    seeking services through customer care centre. Results of this study show that how different factors
    influence and shape a better service experience and whether the factors have positive and significant
    influences on customer’s service experience in a customer care centre of this industry in Sabah. In
    total 18 questions were asked to answer to the 200 sample interviewee to get the real scenario of
    customer care centre in terms of service excellence. This study helps to find out the factors which
    affect the service experience in Customer Care Centre. The result indicates that three out of four
    factors have significant influence on Customer service experience in Telecom Industry in Sabah.
  14. Zakwan, A K.A., Zuhra, A.K.A.
    MyJurnal
    Scheduling is one other method in productivity improvement. Scheduling occurs at the
    operation level of production planning and control system. Scheduling is important because it can
    optimize resource allocation and minimize waste. Simulation analysis can be used to evaluate the
    scheduling technique in order to determine the best alternatives. A case study company, Olilys Sdn.
    Bhd. Did are facing with the unsystematic scheduling methods for the job orders received from
    customers. The problem became worst during peak period (high demand) where the company unable
    to fulfil the customer orders. The objective of this project is to study the existing scheduling technique
    and find related problem, and propose an improvement in production scheduling system. In this project,
    there are five scheduling techniques proposed, which are First Come First Serve (FCFS), Shortest
    Processing Time (SPT), Longest Processing Time (LPT), Priority Rules by product sequences: By Part1
    and By Part 2, and Earliest Due Date (EDD). The simulation modelling and experimentation being
    done by using WITNESS simulation software. Through the experimentation analysis, the best
    scheduling technique was selected and suggested to the company
  15. M. Hanif, Tan, P.L., F. Amalina, Laily
    MyJurnal
    Previous studies on instant noodles have been aimed mostly at secondary students, and have
    been concerned with the demographics, and the development of product attributes. Very few studies
    have examined the role of convenience (CO), product attributes (PA), advertising (AD) and subjective
    norms (SN) in predicting the intention of students towards the consumption of instant noodles. The
    present rising costs of living and education may affect the intention and behaviour of university students
    towards the consumption of affordable food. Therefore, the purpose of this paper was to explore the
    relationship between these variables and the variables of the Theory of Reasoned Action (TRA) in
    association with the intention of university students to consume instant noodles. A research model
    approach was used to reflect the effects of CO, PA, AD, and SN on the TRA constructs. In total, 390
    cases were gathered from three universities. Structural equation modelling was employed to assess the
    proposed research model in terms of the path significance, the general requirements for a model fit,
    and the testing of the hypotheses. It was found that AD has a direct positive effect on the behavioural
    intention of university students towards the consumption of instant noodles. Nevertheless, CO, PA, and
    SN appear to exert no significant influence on the behavioural intention of university students. The
    limitation of the study was that the findings were obtained from a small dataset covering only three
    universities. Therefore, future researches should cover a broader range of research samples. This paper
    provides additional understanding for marketing managers and researchers into the effects of CO, PA,
    AD and SN on the intention of Malaysian university students towards the consumption of instant
    noodles, which can be used for formulating marketing strategies for instant noodles and for considering
    future research directions in other countries.
  16. Aghelie, A., Mustapha, N.M., Sorooshian, S., Azizan, N.A.
    MyJurnal
    The Multi Criteria Decision Making (MCDM) delivers strong decision making in areas where
    selection of best alternative is highly complex. This paper reviews and explain the main condensations
    of MCDM models and practices in detail. The purpose is explained and identify various application
    and the approaches and to suggests different MCDM models for different decision makling issues and
    how to select the best alternatives. This paper also examines the DEMATEL model and problems in
    DEMATEL for decision making and how DEMATEL have been improved to overcome the problems.
    The MCDM methods have helped to choose the best alternatives where that they are many criteria are
    present, the best can be selected and analyzed the different scope for the criteria, weights for the criteria
    and the choose the ideal ones using any multi criteria decision making methods.
  17. Mohamed Shamaun Yushak, Nooh Abu Bakar, Khairur Rijal Jamaludin, Rozzeta Dolah
    MyJurnal
    A Shipyard in Malaysia has been trying to change, but facing employee Resistance to
    Change (RTC). Resistance is attributed to the poor coupling of tasks to its technical
    core, creating bad habits leading to thoughtlessness and neglect. Lewin’s Field Theory
    and Festinger’s Theory of Cognitive Dissonance was used to understand and identify
    the underlying behaviour of the employees. Lean principles were used as an in-depth
    intervention to understand how context provoked or shaped reactions. A Dual
    Imperative Action Research (AR) with the author as a participant researcher was
    conducted not only to create knowledge but also, change. To position the Shipyard in
    its historical context, face-to-face interview was conducted with managers to get thick
    description of the RTC and archaic documentations was reviewed. A survey using
    tested questionnaire was conducted to gauge the employees RTC disposition.
    Resistance is due to incoherency of a person’s belief to establish standards, giving rise
    to cognitive dissonance. These dissonances hidden as non-conscious behaviour, social
    habits or norms, lead the organisation to deterioration. Lean intervention reduce
    dissonance, creating psychological flow in the workforce and momentum for change.
    Thereby, the Shipyard managed to recover the delay of a ship undergoing a ship-life
    extension program and avoided liquidated damages amounting to RM63 million. The
    Shipyard also managed to reduce its average delay for ship repair from 17 to 6 months.
    The knowledge on how the researcher can gain utility from RTC and mediate through
    the application of Lean principles would be of considerable benefit to ‘change
    managers’.
  18. Norashady, M.N., Muhammad Aziz Shah, M.A., Eftah, M.A., Haniza, Y.
    MyJurnal
    The main intention of this research is to examine the content validity of Marine
    Engineer Personality Inventory or PERJURA for student candidates of Diploma in
    Marine Engineering course at Malaysian Polytechnics by using Content Validity Ratio
    (CVR). The assessment was conducted through the evaluation among 14 subject
    matter experts (SME) selected via judgment sampling. Seven professional university
    experts involved with the expertise in psychology, psychometric, educational
    measurement and linguistics. The field experts specializing in particular fields of study
    consisted of seven practitioners who worked in the polytechnics field and maritime
    industry. The instrument involved 288 items with six main constructs. The results of
    the research show that the instrument has a good content validity and proved that
    PERJURA has great potential to be promoted as a good measurement instrument of
    personality screening for Marine Engineering student selection process. It is
    recommended to apply more sophisticated statistical analysis, such as the Item
    Response Theory (IRT) model for elaborating on quality items.
  19. Talib, N., Yassin, S.F.M, Bunyamin, M.A.H.
    MyJurnal
    The purpose of this study is to explore the issues and challenges in integrating
    technological pedagogical content knowledge (TPACK) for computer programming
    courses. This study employed the triangulation method of the case studies and
    Grounded Theory (GT). Twenty-five computer programming educators were
    interviewed via online such as e-mail, media social’s chatting and messaging
    application like WhatsApp and Telegram. The main issue discovered in this study is the
    misconception in using technology for teaching and learning computer programming.
    Besides that, there were two major challenges found in this study. The challenges are
    the instructors were not able to explore the rapid development of technology and this
    may cause the lack of technological pedagogical knowledge among them. They also
    showed the lack of knowledge about pedagogy and assessment for teaching and
    learning computer programming that relevant to the programming content. The
    research that has been done showed that TPACK model is very suitable to guide
    exploration about how educators make use of technology appropriate to the pedagogy
    and content. However, the exploration that has been done has limitation on how
    educators integrate student’s assessment on affective and instructional design
    implementation with TPACK. Therefore, this paper suggesting for the future study, in
    order that more exploration should be doing about how assessment on student’s
    affective and instructional design would be integrate with technology, pedagogy and
    content knowledge via TPACK model.
  20. Salah, S., Yusoff, Y.J.
    MyJurnal
    This paper examines the concept of reform in terms of religious, political and social
    aspects in PB Shelley’s literary works. Selections from Shelley’s poetry, prose, essay
    and drama are reconsidered to show the concept of reform in his works. This paper
    seeks to unravel Shelley’s skeptic revolutionary thoughts that were always
    misunderstood by the critics of his time. Shelley as a poet perpetuated his life as a
    reformer, yet his concept of reform was neglected and often downplayed because of
    his idealistic view of the world. However, the significance of Shelley's concept of reform
    merits, more reverence, or, at least, more critical consideration than any of the Great
    Romantics.
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