Now showing items 41-60 of 74

    • Natural heat convection analysis on cylindrical Al slug of LED 

      Vairavan, Rajendaran; Zaliman, Sauli, Dr.; Retnasamy, Vithyacharan; Khairul Anwar, Mohamad Khazali; Nooraihan, Abdullah; Nazuhusna, Khalid (Trans Tech Publications, 2014-01)
      This paper presents the characterization of a single chip high power LED package through simulation. Ansys version 11 was used for the simulation. The characterization of the LED package with aluminum cylindrical heat slug ...
    • A new approach to incorporate uncertainty into Euler's method 

      Muhammad Zaini, Ahmad; M. K., Hassan (Hikari Ltd, 2010)
      Fuzzy set provides a powerful technique to introduce uncertainty into numerical methods. However, the computations of fuzzy sets often face difficult problems. This is due to non-applicability of common existing methods, ...
    • New crime detection with LBP and GANN 

      Ahmad Kadri, Junoh; Muhammad Naufal, Mansor (Springer-Verlag, 2013)
      A current review of media sources indicates crimes of opportunity such as burglaries, purse-snatchings and vehicle theft, are consistently the most topical crime problems. The Malaysian government has taken several steps ...
    • A new fuzzy version of Euler's method for solving differential equations with fuzzy initial values 

      Muhammad Zaini, Ahmad; M. K., Hasan (Universiti Kebangsaan Malaysia (UKM), 2011-06)
      This paper proposes a new fuzzy version of Euler’s method for solving differential equations with fuzzy initial values. Our proposed method is based on Zadeh’s extension principle for the reformulation of the classical ...
    • A new method for computing continuous functions with fuzzy variable 

      Muhammad Zaini, Ahmad; Hasan, M.K.; De Baets, B. (Asian Network for Scientific Information (ANSInet), 2011)
      This study proposes a new method for computing f(U) where f is a real continuous function and U is a fuzzy interval. The computation of f(U) is performed by incorporating optimisation technique into Zadeh's extension ...
    • Noise annoyance fuzzy index in passenger car cabin 

      Zulkifli, Mohd Nopiah, Prof. Madya Dr.; Ahmad Kadri, Junoh; Ahmad Kamal Ariffin, Mohd. Ihsan, Prof. Dr. (Inderscience Enterprises Ltd., 2013)
      Vehicle acoustical comfort and vibration in passenger car cabin are the factors which attract buyers to a vehicle, in order to have a comfortable driving environment. The comfort of the driving will affect the driver by ...
    • Nuclear matter and surface clustering 

      Qamar Nasir, Usmani, Prof. Dr.; Nooraihan, Abdullah; Khairul Anwar, Mohamad Khazali; Zaliman, Sauli, Dr. (IOP Publishing Ltd, 2013)
      We demonstrate that the binding energy per nucleon of symmetric nuclear matter (SNM) (with Coulomb interaction switched off and N Z) in the limit of zero density approaches to its value, uv, at the saturation density, where ...
    • Numerical solution of the boundary layer flow over an exponentially stretching sheet with thermal radiation 

      Biliana, Bidin; Roslinda, Nazar (European Journals Inc., 2009-07)
      In this paper, the problem of steady laminar two-dimensional boundary layer flow and heat transfer of an incompressible viscous fluid with a presence of thermal radiation over an exponentially stretching sheet is investigated ...
    • Optimisation of acoustical comfort in vehicle cabin using goal programming 

      Zulkifli, Mohd Nopiah, Prof. Madya Dr.; Ahmad Kadri, Junoh; Ahmad Kamal Ariffin, Mohd. Ihsan, Prof. Dr. (Inderscience Enterprises Ltd., 2013)
      Car cabin acoustical comfort is one of the main features that may attract customers to purchase a new vehicle. The noise in a passenger car cabin is closely related to the vibration generated in the vehicle system. In this ...
    • Physical characterization of BST with different (x') ratios 

      Nurhafizah, Ramli; Zaliman, Sauli, Dr.; Retnasamy, Vithyacharan; They, Yee Chin; Khairul Anwar, Mohamad Khazali; Nooraihan, Abdullah (Trans Tech Publications, 2014)
      Nowdays Barium strontium titanate (BST) can be applied into many fields of engineering. Its properties attracted more researchers to research and apply it into many fields of study. In this work, sol-gel method of preparing ...
    • Projection of postgraduate students flow with a smoothing matrix transition diagram of Markov chain 

      Rahela, Abdul Rahim, Dr.; Haslinda, Ibrahim, Prof. Madya Dr.; Farah Adibah, Adnan (AIP Publishing LLC, 2013)
      This paper presents a case study of modeling postgraduate students flow at the College of Art and Sciences, Universiti Utara Malaysia. First, full time postgraduate students and the semester they were in are identified. ...
    • Quartic B-spline and two-step hybrid method applied to boundary value problem 

      Shazalina, Mat Zin; Ahmad, Abdul Majid; Ahmad Izani, Md Ismail, Prof. Dr. (AIP Publishing LLC, 2013)
      Boundary value problem of second order ordinary differential equation (ODE) has been identified as a problem. However, this work will focus on solving a special case of second order ODE. Special case of second order ODE ...
    • Reductions and new exact solutions of the density-dependent Nagumo and Fisher equations 

      Masemola, P.; Abdul Hamid, Kara, Prof. Dr.; Kamran, Fakhar (Springer Science+Business Media Dordrecht., 2013-10)
      We show that conservation laws and their corresponding multipliers can be used to reformulate systems of partial differential equations and obtain some new classes of solutions. By applying the generalized double-reduction ...
    • Similarity solutions and conservation laws for rotating flows of an Oldroyd-B fluid 

      Kamran, Fakhar; Kara, Abdulhamid; Morris, Richard; T., Hayat (Indian Association for the Cultivation of Science, 2013-10)
      In this paper, similarity reduction arising from classical Lie point symmetries of unsteady hydromagnetic flows of a rotating Oldroyd-B fluid under influence of Hall currents is carried out. By employing different combinations ...
    • Simulating evacuations with obstacles using a modified dynamic cellular automata model 

      Lim, Eng Aik; Tan, Wee Choon (Hindawi Publishing Corporation, 2012)
      A modified dynamic cellular automata model is proposed to simulate the evacuation of occupants from a room with obstacles. The model takes into account some factors that play an important role in an evacuation process, ...
    • Solving delay differential equations using modified 2-point block method 

      Nurul Huda, Abdul Aziz; Zanariah, Abdul Majid (AIP Publishing LLC, 2013)
      The performance of a modified 2-point block method for solving delay differential equations (DDE) has been investigated. The proposed method computes the numerical solution at two points simultaneously and produces two new ...
    • Solving fuzzy fractional differential equations using Zadeh's extension principle 

      Muhammad Zaini, Ahmad, Dr.; Mohammad Khatim, Hasan, Assoc. Prof. Dr.; Saeid, Abbasbandy, Dr. (Hindawi Publishing Corporation, 2013)
      We study a fuzzy fractional differential equation (FFDE) and present its solution using Zadeh's extension principle. The proposed study extends the case of fuzzy differential equations of integer order. We also propose a ...
    • Solving standard traveling salesman problem and multiple traveling salesman problem by using branch-and-bound 

      Shakila, Saad; Wan Nurhadani, Wan Jaafar; Siti Jasmida, Jamil (AIP Publishing LLC, 2013)
      The standard Traveling Salesman Problem (TSP) is the classical Traveling Salesman Problem (TSP) while Multiple Traveling Salesman Problem (MTSP) is an extension of TSP when more than one salesman is involved. The objective ...
    • Some fuzzy techniques for staff selection process: A survey 

      R., Md. Saad; Muhammad Zaini, Ahmad, Dr.; Mohd Syafarudy, Abu; Muhammad Shahar, Jusoh, Dr. (AIP Publishing LLC, 2013)
      With high level of business competition, it is vital to have flexible staff that are able to adapt themselves with work circumstances. However, staff selection process is not an easy task to be solved, even when it is ...
    • Staff selection problem under uncertainty condition 

      R., Md. Saad; Muhammad Zaini, Ahmad, Dr.; Muhammad Shahar, Jusoh, Dr.; Mohd Syafarudy, Abu (Medwell Journals, 2013)
      Hiring the right person for the right position is the core to the success of an organisation. Some organizations have suggested to create an ideal candidate that fulfilled all requirements which needed for a particular ...