Now showing items 234-253 of 2600

    • Centralized resource allocation in data envelopment analysis via one-phase linear mathematical programming 

      Najmeh, Malekmohammadi; Azmi, Jaafar (Universiti Malaysia Perlis (UniMAP)Institut Matematik Kejuruteraan, 2010-06-02)
      In the existing data envelopment analysis (DEA) models, we have a centralized decision maker (DM) who supervises all the operating units. I this paper, one-phase model is proposed for centralized resource allocation in ...
    • A certain investigations on the performance issues of smart antennas for cellular mobile communications 

      Gunasekaran, T.; Shankar Kumar, K.R.; Manisankar, S.; Parthiban, K.; Periyasamy, I.; Sivakumar, R. (Universiti Malaysia Perlis, 2009-10-11)
      Adaptive antenna arrays are being developed to cope with the high capacity requirement of the 3G/4G wireless cellular communications systems. As adaptive antenna arrays focus narrow high gain beams towards the desired users ...
    • CFD modelling of air flow distribution from a fan 

      Mohd Yusoff, Sulaiman; Shamsul Bahari, Azraai; Wan Mokhtar, Wan Abdullah (Universiti Malaysia Perlis, 2009-10-11)
      This paper presents a Computational Fluid Dynamics (CFD) modeling simulation of air flow distribution from an automotive radiator fan. An introduction to the nature of the physical fan air flow problem and its significance ...
    • CFD prediction of heat and fluid flow through U-bends using high reynolds-number EVM and DSM models 

      Mohd Fairusham, Ghazali; Mohd Fadzil, Abd Rahim (Malaysian Technical Universities Network (MTUN), 2012-11-20)
      The cooling system of gas turbine blades understanding and improvement is increasing desires for computational techniques which can accurately model the flow field and heat transfer characteristics of blade cooling passage ...
    • CFD study on the effect of ultrasound wave frequency on cavitation field inside a liquid 

      Masoud Rahimi1; Mahdieh Abolhasani; Maryam Dehbani; Ammar.A. Alsairafi (Universiti Malaysia Perlis (UniMAP)Pusat Pengajian Kejuruteraan Mekatronik, 2012-02-27)
      The effects of different ultrasonic wave frequencies are studied in this paper. The flow behavior of the liquid in a vessel with ultrasound transducer is numerically investigated using CFD calculations. Liquid imposed ...
    • Challenges in developing a driver monitoring system 

      Arun, Sahayadhas; Sundaraj, Kenneth, Prof. Dr.; Murugappan, M., Dr. (Universiti Malaysia Perlis (UniMAP), 2012-06-18)
      For safe journey, the behavior of the driver has to be monitored. Statistics prove that most of the road accidents are due to driver abnormal behavior like drowsiness, inattention and drunk and drive. If a monitoring system ...
    • Channels estimation in OFDM system on block-type and comb-type pilot arrangement 

      Mohd Suhaizal, Abu Hassan; Abid, Yahya, Dr.; Farid, Ghani, Prof. Dr.; R. Badlishah, Ahmad, Prof. Dr. (Universiti Malaysia Perlis (UniMAP), 2012-06-18)
      In orthogonal frequency division multiplexing (OFDM) systems over time-varying and frequency-selective fading channel, channel estimation and tracking is generally carried out by transmitting known pilot symbols in given ...
    • A chaotic neural network based encryption algorithm for MPEG-2 encoded video signal 

      A. Tariq, A. Fadil; Shahrul Nizam, Yaakob; R. Badlishah, Ahmad, Prof. Madya Dr.; Abid, Yahya, Dr. (Universiti Malaysia Perlis (UniMAP)Pusat Pengajian Kejuruteraan Mekatronik, 2012-02-27)
      In this paper, a cipher system based on Chaotic Neural Network (CNN) is used to encrypt and construct a stream cipher of compressed MPEG-2 video signal. The symmetric CNN cipher algorithm transforms the plaintext (compressed ...
    • Characterisation of fragrance major compouds in intact plant and in vitro cultures of Citrus grandis (Osbeck) flowers 

      Mohd Azlan, Mohd Ishak; Zarina, Zakaria; Abd Hamid, Khalid; Suhana, Zakaria (Universiti Teknologi MARA (UiTM), 2007-07-05)
      Citrus grandis or pomelo flowers possess a strong floral-, jasmine- and orange-like fragrance. In this study, various sampling techniques such as hydrodistillation, Soxhlet extraction and Solid Phase Micro extraction (SPME) ...
    • Characteristic and the efficiency of fuel cell investigation using hydro genius teach 

      Muzamir, Isa; Baharuddin, Ismail; Ismail, Daut; Mohd Fayzul, Mohammed (Universiti Teknologi MARA (UiTM), 2006)
      The aim of this paper is to deliver information about the features of fuel cells. Along with it, this paper gives details about activities of renewal energy. It covers analysis of theories and some experiments done using ...
    • Characteristic of anaerobic digestion from slaughterhouse waste 

      Norazian, Mohamed Noor; Masitah, Hassan; Mohd Kamal, Ulum; Mohd Mustafa Al Bakri, Abdullah (Universiti Teknologi Malaysia (UTM), 2009-06-02)
      In this project, slaughter waste was mixed with the sludge from the Shorubber's industries landfill. Slaughter waste as the food to microbes whereas the sludge use to supply the microbes that go anaerobic digestion. The ...
    • Characteristic of different precursor size of activated carbon produced from Oil Palm shell in adsorption of LPG 

      Mohd Syamsul Hadi; Safarudin G. Herawan; Md Razali, Ayob (Universiti Malaysia Perlis, 2009-10-11)
      The effects of material precursor selections in the quality of activated carbon produced from oil palm shell, an abundant palm-oil mill solid waste, were studied. Scanning Electron Microscopy (SEM) and Fourier Transform ...
    • The characteristic of porosity in Al-SiC metal-matrix composite under different milling time 

      Nozie, Abdullah; Shahruddin, Mahzan; Ade Firdianto; Norashida, Arsat; Darwin, Sebayang; Al Imran, Ismail (Universiti Malaysia Perlis, 2009-12-01)
      Powder metallurgy has been extensively investigated due to high mechanical strength and potentially for cost reduction. The current investigated the performance of aluminium and silicon carbide powder in producing alternative ...
    • Characteristic region based image steganography using Speeded-Up Robust Features technique 

      Nagham, Hamid; Abid, Yahya; R. Badlishah, Ahmad, Prof. Dr.; Osamah Al-Qershi (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Steganography is the art and science of invisible communication. It is employed in different useful a pplications, like, safe circulation of secret data and Medical I maging Systems. For most of the current steganography ...
    • Characteristics of corrosion product films of copper alloy in South China Seawater 

      Mohammed Misbahul, Amin; Kamaruzzaman, Yunus; Ku Halim, Ku Bulat (Universiti Sains Malaysia & Institution of Chemical Engineers Malaysia, 2003-12-29)
      The corrosion behaviour of Copper-base alloy was investigated in three different states south china seawater at 50 & 70 0 C for the period of 10 h in atmospheric condition. A procedure was applied to measure the pH of the ...
    • Characteristics of nanostructure silicon photodiode using laser assisted etching 

      Ahmed, Naser M.; Yarub, Al-Douri, Assoc. Prof. Dr.; Alwan, Alwan M.; Jabbar, Allaa A.; Arif, Ghassan E. (Malaysian Technical Universities Network (MTUN), 2012-11-20)
      We prepared nanostructures silicon photodiode (nPSi) by using laser assisted etching at fixed current density (30 mA/cm2) with different etching wavelengths of laser diode (532,650 and 810 nm), a (metal/nanostructure ...
    • Characteristics of thermoplastic potato starch/bentonite nanocomposite film 

      Nurul Husna, Zakaria; Noorhafiza, Muhammad; Mohd Mustafa Al Bakri, Abdullah; Sandu, I. G.; Mei Wan, C. L. (IOP Publishing Ltd, 2018-06)
      The aim of this study is to investigate the effect of bentonite towards thermoplastic potato starch nanocomposite films on the mechanical, microstructure and physical properties. The nanocomposite films were prepared using ...
    • Characterization and analysis of diatomite for industrial applications 

      A. W. Fagri; Yarub, Al - Douri, Prof. Madya Dr.; Uda, Hashim, Prof. Dr. (Universiti Malaysia Perlis (UniMAP), 2012-06-18)
      As nanotechnology and nanomarterials are gaining wide acceptances, diatomite is one of the attractive materials that can be engineered to form different nanostructures for numerous applications. Thus, careful examination ...
    • Characterization and application of dolomite rock in Perlis 

      Mohd Nazry, Salleh; Farizul Hafiz, Kasim; Khairul Niza,r Ismail; Che Mohd Ruzaidi, Ghazali; Saiful Azhar, Saad; Suhardy, Daud (Universiti Teknologi Malaysia (UTM), 2006-07-24)
      Dolomite which is known by the local as ‘batu reput’, is a primary sediment mineral and abundantly found in Perlis. Perlis is one of the major producers of dolomite in Malaysia that contain large deposit of high-purity ...
    • Characterization and development of horticulture greenroom 

      Wong, Wei Yeap; Wong, Yan Chiew; Ranjit Singh, Sarban Singh (Universiti Malaysia Pahang, 2009-06-20)
      Plantation of horticulture crop in Malaysia is growing restricted locally at the highland. This is due to the climate necessary of horticulture crop. Thus, plantation of those crops in the lowland tropic is a difficult ...