Publications 2018

Permanent URI for this collection

https://hdl.handle.net/20.500.14170/11324

Browse

Browsing Publications 2018 by Title

  • Publication
    16×16 fast signed multiplier using Booth and Vedic architecture
    ( 2018-12-06)
    Shing L.Z.
    ;
    Hussin R.
    ;
    Kamarudin A.
    ;
    Mohyar S.N.
    ;
    Taking S.
    ;
    Aziz M.H.A.
    ;
    Ahmad N.
    This paper present the new 16×16 signed multiplier design using Booth architecture and Vedic architecture. The Booth architecture is based on Radix-4 Booth multiplier which reduces the number of partial product generated into almost half. Vedic architecture has advantages in partial product generation and addition which are done concurrently [1]. In order to improved the performance of signed muliplier, the 16×16 signed multiplicand and multiplier is partition by using the 16×16 Vedic architecture (8 bits per block). Radix-4 Booth multiplier is used to multiply each block as in 16×16 Vedic architecture. This new 16×16 signed multiplier is taking advantages on Booth multiplier approach on top of Vedic achitecture. It has simple architecture compared to normal 16×16 Radix-4 Booth multiplier. This new signed multiplier uses Ripple Carry Adder (RCA) or Carry Look-Ahead Adder (CLA) to add up the generated partial product. This new 16×16 signed multiplier has improved the performance by reducing the total propagation delay. The new 16×16 signed multiplier design 1 (RCA) and design 2 (CLA) are 33.4% and 35.6% faster compared to the 16×16 Radix-4 Booth multiplier. It is because the partial product generation by Radix-4 Booth multiplier and partial product addition are done concurrently using Vedic architecture.
  • Publication
    802.11p optimization for delay sensitive in non-safety messages in VANETs
    ( 2018-10-01)
    Elias S.J.
    ;
    Warip M.N.M.
    ;
    Elshaikh M.
    ;
    Darus M.Y.
    ;
    Ahmad R.B.
    Vehicle density and high vehicle mobility are variables that measured the performance of Vehicular Ad Hoc Network (VANET) in unpredictable traffic data transmission environment. This paper is focused on non-safety messages transmission mainly for delay in time in test-bed simulation environment. Network optimization is an approach to evaluate the existing congestion control protocols and other network parameters for outlining a newly enhanced congestion control protocols. This paper presents a city and highway traffic data transmission scenarios for optimizing delay sensitivity utilizing the Taguchi method. The avareage data transmission on delay is performance indicator applying OMNeT++ simulation tools. The optimization process could be achieved once the best fit performance parameters are being identified. The best fit performance values could conclude the optimal and efficient congestion control networks. The packet sizes are the main control factors for this test-bed experiment focusing on non-safety messages which are delay sensitive.
  • Publication
    A compact dual-band rectenna for ambient RF energy harvesting
    ( 2018-11-01)
    Adam I.
    ;
    M. Yasin M.N.
    ;
    A. Rahim H.
    ;
    Soh P.J.
    ;
    Abdulmalek M.F.
    A compact broadband ambient RF energy harvester operating from 1800 MHz up to 2.5 GHz is proposed in this paper. This work is motivated by the huge amount of free and continuously available RF energy in the surroundings that can be utilized into useable energy. Harvest performance is investigated using two antennas in this work, a circular polarized and an array antenna. Due to low ambient power densities, a multistage rectifier is utilized to improve the output dc voltage of the proposed system. Measurements indicate the system is capable of harvesting up to 1.8 Vdc output from nondedicated ambient RF energy sources in an urban area, which is significant in the absence of other energy sources.
  • Publication
    A comparative review of adaptive routing approach for network-on-chip router architecture
    ( 2018-01-01)
    Zulkefli F.W.
    ;
    Ehkan P.
    ;
    Warip M.N.M.
    ;
    Phing N.Y.
    ;
    Zakaria F.F.
    Based on Moore’s prediction, the future integrated systems will contain billions of transistors with hundreds of IP core to undergo complex multimedia delivery and networks services. In order to continue the relevancy of Moore’s law, Network-on-Chip (NoC) architectures have been proposed. The bus structure in System-on-Chip (SoC) is swapped by a network with routers and wires. Routers in NoC are responsible to route packets based on the routing algorithms. For various system, there are a lot of different algorithms to suit with each system requirement. Routing algorithm is further divided into two which include oblivious routing algorithm and adaptive routing algorithm. This paper presents a review of different types of well-known router architecture in NoC. The routers are classified by respect to the adaptive routing algorithms with a view of the performance characteristics depending on the application requirements in NoC. The outline and features of several router architectures are reviewed and analyzed.
  • Publication
    A comparative study for different sizing of solar PV system under net energy metering scheme at university buildings
    ( 2018-09-01)
    Mansur T.
    ;
    Baharudin N.
    ;
    Ali R.
    Malaysia has moved forward by promoting the use of renewable energy such as solar PV to the public to reduce dependency on fossil fuel-based energy resources. Due to the concern on high electricity bill, Universiti Malaysia Perlis (UniMAP) is keen to install solar PV system as an initiative for energy saving program to its buildings. The objective of this paper is to technically and economically evaluate the different sizing of solar PV system for university buildings under the Net Energy Metering (NEM) scheme. The study involves gathering of solar energy resource information, daily load profile of the buildings, sizing PV array together with grid-connected inverters and the simulation of the designed system using PVsyst software. Based on the results obtained, the amount of solar energy generated and used by the load per year is between 5.10% and 20.20% from the total annual load demand. Almost all solar energy generated from the system will be self-consumed by the loads. In terms of profit gained, the university could reduce its electricity bill approximately between a quarter to one million ringgit per annum depending on the sizing capacity. Beneficially, the university could contribute to the environmental conservation by avoiding up to 2,000 tons of CO2 emission per year.
  • Publication
  • Publication
    A comparative study on Whole Body Vibration (WBV) comfort towards compact car model through data mining approach
    ( 2018-01-01)
    Abdullah M.
    ;
    Junoh A.
    ;
    Muhamad W.
    ;
    Desa A.
    ;
    Zakaria M.
    Nowadays people of Malaysian spend a significant amount of time traveling by the vehicle to travel from one location to another location, and this could be the main reason to decrease minimal vibration for the comfort level in transportation. The vibration that generated while driving can influence pressure and eliminate the focus to the driver and passenger, and this is one of the main causes that can lead accidents on the roads. In this study, we investigate the effect of the vibration caused by the tire interaction with the road surface. The methodology focuses on the trends which occur on the vibration exposure that has been generated throughout the engine operating rpm range in both stationary and non-stationary conditions. An equation will be approached through the analysis to find the significant data that can be used in the process which is K-Means algorithm. Based on the trends of the experienced and exposed vibration, the model is able to differentiate the level of comfort between the clusters by grouping the level of vibration into five categories. To review the accuracy of classification data cluster, the K-Nearest Neighbor method and Analysis Linear Discriminant is used for shows the percentage accuracy of classification data have been a cluster. Later, the vibration for the three cars in this study which has analyzed, compared using the approach of analysis of variations (ANOVA).
  • Publication
    A disposable biosensor based on antibody-antigen interaction for tungro disease detection
    ( 2018-01-01)
    Uda M.N.A.
    ;
    Hasfalina C.M.
    ;
    Samsuzanaa A.A.
    ;
    Faridah S.
    ;
    Gopinath S.C.B.
    ;
    Parmin N.A.
    ;
    Hashim U.
    ;
    Mat M.
    An electrochemical immunosensor based on the screen-printed carbon working electrode with an onboard carbon counter, and silver-silver chloride pseudo-reference electrode for tungro disease, is described in this chapter. A direct competitive enzyme-linked immunosorbent assay format was first developed and optimized on the surface of a carbon screen-printed working electrode by immobilizing the capture antibody (polyclonal) using an electro-deposition of gold nanoparticles conjugated with polyclonal antitetracycline antibodies. The detection reagent, tetracycline-horseradish peroxidase conjugate, was used as an enzyme label. Electrochemical detection was then carried out using 3,3',5,5'-tetramethylbenzidine dihydrochloride/H2O2 as the enzyme mediator/substrate system, and conducted using chronoamperometry at 300 mV versus an onboard screen-printed Ag-AgCl pseudo-reference electrode. It also showed very high sensitivity using the amplification strategy applied with the use of gold nano-particles. This makes the developed sensor a potential tool for rapid, simple, and sensitive detection of Tungro disease in paddy plantations.
  • Publication
    A GUI Based Software for Sizing Stand Alone AC Coupled Hybrid PV-Diesel Power System under Malaysia Climate
    ( 2018-03-19)
    Syahirah Mohamed N.S.
    ;
    Mohamat Adek N.A.B.
    ;
    Abd Hamid N.F.
    This paper presents the development of Graphical User Interface (GUI) software for sizing main component in AC coupled photovoltaic (PV) hybrid power system based on Malaysia climate. This software provides guideline for PV system integrator to design effectively the size of components and system configuration to match the system and load requirement with geographical condition. The concept of the proposed software is balancing the annual average renewable energy generation and load demand. In this study, the PV to diesel generator (DG) ratio is introduced by considering the hybrid system energy contribution. The GUI software is able to size the main components in the PV hybrid system to meet with the set target of energy contribution ratio. The rated powers of the components to be defined are PV array, grid-tie inverter, bi-directional inverter, battery storage and DG. GUI is used to perform all the system sizing procedures to make it user friendly interface as a sizing tool for AC coupled PV hybrid system. The GUI will be done by using Visual Studio 2015 based on the real data under Malaysia Climate.
  • Publication
    A hybrid life cycle assessment of embodied energy and carbon emissions from conventional and industrialised building systems in Malaysia
    ( 2018-05-15)
    Wan Omar W.M.S.
    Life cycle assessment (LCA) is considered to be the most systematic methodology that is widely used in the area of energy analysis. However, embodied energy (EE) and carbon (EC) analysis requires significant time and effort to ensure the reliability of the LCA results. Therefore, a more comprehensive model of conducting the energy analysis is required to provide more realistic EE and EC analysis in turn. Hybrid LCA has been identified as the best model in improving the completeness of EE and EC inventory data. However, such a benefit was not empirically verified extensively, especially in the Malaysian construction industry. This paper demonstrates an extended application of hybrid LCA to Malaysian building design systems, and further investigates the completeness of the model. Finally, the potential for EE and EC reduction through the allocation of low EE and EC intensities of alternative materials, products or components has been evaluated. The results revealed that the hybrid LCA improved the completeness of the EE and EC inventory data compared with other models. By using low EE and EC intensity materials, products or components, a total EE and EC reduction of 43% and 41%, respectively was achieved. The results showed that the proposed methodology can assist designers practically during the early stage of the design process in the Malaysian construction industry.
  • Publication
    A Low Power 2.4 GHz CMOS Mixer Using Forward Body Bias Technique for Wireless Sensor Network
    ( 2018-03-19)
    Yin C.
    ;
    Murad S.
    ;
    Harun A.
    ;
    Ramli M.
    ;
    Zulkifli T.
    ;
    Karim J.
    Wireless sensor network (WSN) is a highly-demanded application since the evolution of wireless generation which is often used in recent communication technology. A radio frequency (RF) transceiver in WSN should have a low power consumption to support long operating times of mobile devices. A down-conversion mixer is responsible for frequency translation in a receiver. By operating a down-conversion mixer at a low supply voltage, the power consumed by WSN receiver can be greatly reduced. This paper presents a development of low power CMOS mixer using forward body bias technique for wireless sensor network. The proposed mixer is implemented using CMOS 0.13 μm Silterra technology. The forward body bias technique is adopted to obtain low power consumption. The simulation results indicate that a low power consumption of 0.91 mW is achieved at 1.6 V supply voltage. Moreover, the conversion gain (CG) of 21.83 dB, the noise figure (NF) of 16.51 dB and the input-referred third-order intercept point (IIP3) of 8.0 dB at 2.4 GHz are obtained. The proposed mixer is suitable for wireless sensor network.
  • Publication
    A model of virus infection dynamics in mobile personal area network
    ( 2018-01-01)
    Sudin S.
    ;
    Badlishah Ahmad R.
    ;
    Idrus S.Z.S.
    In this paper, the authors explore the mobile network security focused on the virus threat. Firstly, the authors explain the importance of mobile network security which sometimes not really takes into considerations by users. This paper then explains the virus threat of mobile devices virus where it explains how the viruses spread. The threats can be in three major forms namely the virus spreading via mobile personal area network, virus spreading via internet access and virus spreading via messaging. Lastly a model explains the dynamics of the infection on Mobile Network is introduced.
  • Publication
    A novel contrast enhancement technique based on combination of local and global statistical data on malaria images
    ( 2018-01-01)
    Kanafiah S.N.A.M.
    ;
    Mashor M.Y.
    ;
    Mustafa W.A.
    ;
    Mohamed Z.
    ;
    Abdul Shukor S.A.
    ;
    Yazid H.
    ;
    Yahya Z.R.
    Malaria appears to be one of the main reasons for detrimental health issue at the global scale that is responsible for approximately half a million deaths every year. As the cases of malaria seem to escalate at an annual rate, it is vital to provide a rapid and accurate diagnosis through manual microscopic assessment in the attempt to control the spread of malaria. Nevertheless, varied staining steps and noise disruptions can cause inaccurate diagnosis due to wrong interpretation. Hence, to address such issues, this study investigated the performance upon removing background noise and the method of correcting illumination that has an impact upon segmentation for a computer-assisted diagnostic system. The findings display that the technique which is based on Otsu threshold and statistical data used to enhance the contrast image as to determine cells infected by the malaria parasite, in comparison to other methods. This method was tested on 450 malaria images, consists of P. Vivax, P. Falciparum, and P. Knowlesi species at the stages of trophozoite, schizont, and gametocyte. As a results, the proposed approach yielded 1.31 for Global Contrast Factor (GCF) and 10.56 for Signal Noise Ratio (SNR).
  • Publication
    A Novelty Design of Minimization of Electrical Losses in A Vector Controlled Induction Machine Drive
    ( 2018-02-15)
    Aryza S.
    ;
    Irwanto M.
    ;
    Lubis Z.
    ;
    Siahaan A.P.U.
    ;
    Rahim R.
    ;
    Furqan M.
    The induction motor has in the industry . More attention has been a focus to develop and design of induction motor drive. With the method of vector control novelty prove the efficiency of induction motor over their entire speed range. In this paper desirable to design a loss minimization controller which can improve the efficiency. Also, this research described Modeling of an induction motor with core loss included. Realization of methods vector control for an induction motor drive with loss element included. The case of the loss minimization condition. The procedure was successful to calculate the gains of a PI controller. Though the problem of obtaining a robust and sensorless induction motor drive is by no means completely solved, the results obtained as part of this work point in a promising direction.
  • Publication
    A parameter study of plastic injection moulding process on polypropylene material for USB clip
    ( 2018-11-09)
    Rahman N.R.A.
    ;
    Hamzah Z.
    ;
    Haris M.H.M.
    ;
    Faris N.A.
    ;
    Shayfull Z.
    ;
    Fathullah M.
    Plastic injection moulding process has been one of the most widely employed processes in the production of plastics products. Similar to other forming processes, the characteristics of plastic injection moulding procedures are significantly affected by different quality level of the plastic products, particularly in regard to its process parameters. Several attempts have been made to investigate the effect of various level of process parameters, or in other words, in determining the efficient frontier of the parameters. A considerable amount of research has determined the effect of parameters in plastic injection moulding process as well as its influence on the quality and costs of the product. Hence, the purpose of the current research was to study the effect of different parameters which include injection moulding temperature and injection moulding pressure on polypropylene work material performed with plastic injection moulding process in the case of manufacturing USB Clip.
  • Publication
    A pH stimuli thiol modified mesoporous silica nanoparticles: Doxorubicin carrier for cancer therapy
    ( 2018-06-01)
    Velusamy P.
    ;
    Srinivasa C.M.
    ;
    Kumar G.V.
    ;
    Qurishi Y.
    ;
    Su C.H.
    ;
    Gopinath S.C.B.
    Mesoporous silica nanoparticles (MSN) have been attracted in the field of biomedicine due to their versatile properties as a drug nanocarrier. In this research, MSN and thiol modified MSN (mMSN) were synthesized to be the drug nanocarriers, by the sol–gel technique for the efficient delivering doxorubicin hydrochloride (DOX). These carriers were characterized by Transmission Electron Microscopy (TEM), Field Emission Scanning Electron Microscopy (FESEM), SA3100 analyzer (Brunauer–Emmett–Teller), Zetasizer and Fourier transform infrared spectroscopy (FTIR). FESEM observation revealed that these particles have uniform sizes and the zeta potential analysis confirmed the existence of surface charge and stability of the particles. Brunauer–Emmett–Teller showed that MSN and mMSN are characteristic type IV N2 adsorption/desorption patterns. The in vitro drug release profile studies have profound that the drug-loaded carriers were pH dependent and the drug-loaded mMSN (DOX@mMSN) displayed a faster drug release at the acidic pH with tumor cells than the pH with normal cells. Cell cycle arrest and ROS generation were analyzed by Fluorescence-activated cell sorting. Assay on the cytotoxicity against the HeLa cells showed a better antitumor effect with DOX@mMSN compared to DOX@MSN. This study attested that pH-responsive thiol modified drug nanocarrier can have the potential cancer therapy.
  • Publication
    A preliminary review on web session hijacking
    ( 2018-01-01)
    Ismail N.N.S.
    ;
    Warip M.N.M.
    ;
    Elias S.J.
    ;
    Ahmad R.B.
    A fast internet-based technology such as web-driven and mobile application is the most popular usage of people nowadays. With the blink of the eye, the number of users is increasing tremendously every single second. So does the number of web-driven and mobile application. Thus, the number of a hacked website also increases daily. As the end user, we are likely to concern about the security breach that might occur. One of the threats that can happen at application layer users is web session hijacking. Generally, session hijacking is the attack occurs to impersonate the real resource to serve the pretended as the legitimate user. One of the ways for this threat to happen is by stealing the session identification number. This paper presents the session hijacking definition, the taxonomy and the attack that might occur also a various possible method to detect or prevent the attack in a various situation by previous researchers. In addition, this review hopes to bring some awareness to the end users about the threat that is likely to occur while accessing any resources over the Internet using website.
  • Publication
    A proposed compatibilizer materials on banana skin powder (BSP) composites using different temperature
    ( 2018-03-01)
    Mustafa W.A.
    ;
    Saidi S.A.
    ;
    Zainal M.
    ;
    Santiagoo R.
    In recent years, there has been an increasing interest in materials treatment in order to improve the properties. In this study, the effect of recycled acrylonitrile butadiene rubber (NBRr) loadings and compatibilization of polypropylene maleic anhydride (PPMAH) in the polypropylene (PP) / recycled acrylonitrile butadiene rubber (NBRr) / banana skin powder (BSP) composites was analysed. The proposed material involved a few steps such as the Polypropylene (PP) was melt at optimum temperature which is 230 oC. Next, the composites for both uncompatibilized and polypropylene maleic anhydride (PPMAH) compatibilized were mixed using heated two roll mill at specific temperature (180°C) with six different NBRr loadings rate. A few analysis techniques such as tensile properties and Scanning Electron Micrograph (SEM) were conducted. The SEM micrographs show good attachment and better distribution of filler in the compatibilizer composite.
  • Publication
    A recommender system for finding products from next door virtual manufacturer or supplier: A conceptual study
    ( 2018-11-09)
    Hadi M.A.
    ;
    Fathullah M.
    ;
    Ismail S.
    ;
    Radzuan M.R.A.
    Electronic Commerce (EC) platform which is widely known as E-Marketplace handles millions of transactions over the internet. While individual users of E-Marketplace frequently interact with a shorter supply chain, Business-to-Business (B2B) users, on the other hand, manage multiple interactions with multiple layers of partners such as manufacturers or suppliers. This complexity, however, introduces problems of information overload where the users only require pertinent information based on their interests. Although recommender systems (RSs) are widely used in resolving such problems, the current RSs in the literature are still suffering several limitations, such as overspecialised recommendation, and scalability issues. Moreover, there is an urgency to introduce manufacturing companies or suppliers to online business buyers within to trade with the shortest paths between the users. This paper presents a conceptual idea of the B2B recommendation model to present potentially useful products to virtual manufacturers or suppliers to business users. The concept highlighted the effectiveness of social network information for the recommender to alleviate the current issues of RSs to support the complexity introduced in the B2B environment.
  • Publication
    A review of data collection approaches in linear wireless sensor networks (LWSNs)
    ( 2018-06-27)
    Yousif Y.K.
    ;
    Badlishah R.
    ;
    Yaakob N.
    ;
    Amir A.
    Using wireless sensor nodes in monitoring systems have attracted significant attention over the past few years. Wireless sensor networks (WSNs) are key technology that extensively applied in many fields, such as transportation, health-care and environment monitoring. Different applications of WSN require different structure of nodes deployment form. For example, pipelines, border and Highway monitoring system, these applications have produced a special class of WSN in which nodes deployed in linear structure to form a linear wireless sensor network (LWSN) that extended to long distance area. In this paper, Applications and classification of LWSN are presented. Also, related works of data collection approaches in LWSN are provided, which classified into two categories named multi-hop data collection approach and mobile data collection approach (MDC). In addition, cons and pros in the existing approaches and future trends are also discussed.