Browsing Journal Articles by Title

Now showing items 1787-1805 of 2678

    • Optimal selection of long time acoustic features using GA for the assessment of vocal fold disorders 

      Sindhu, Ravindran; Neoh, Siew Chin, Dr.; Muthusamy, Hariharan, Dr. (Trans Tech Publications, 2013)
      In recent times, vocal fold problems have been increasing dramatically due to unhealthy social habits and voice abuse. Non-invasive methods like acoustic analysis of voice signals can be used to investigate such problems. ...

    • 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 ...

    • Optimisation of machining parameters by criterion of maximum productivity 

      Usubamatov, Ryspek, Prof. Dr.; Azmi, Harun; Asmawi, Sanuddin (Taylor & Francis, 2014-05)
      The optimisation of machining parameters for machine tools using the criterion of maximum productivity rate is not a new problem - many unresolved issues remain. The intensification of machining processes leads to changes ...

    • Optimising PCM thermal storage systems for maximum energy storage effectiveness 

      Nasrul Amri, Mohd Amin; Belusko, Martin; Bruno, Frank; Liu, Ming (Elsevier Ltd., 2012-09)
      A new performance parameter for PCM thermal storage systems, the energy storage effectiveness, is defined. This parameter can be used to optimise the design of any PCM thermal storage system to maximise the use of the ...

    • The optimization concept of Service Fulfillment Measurement: a research on Surgery Care 

      Norshahrizan, Nordin; Razli, Che Razak; Sharmini, Abdullah; Ummi Naiemah, Saraih; Marniati; Wan Norsyafawati, W. Muhamad Radzi (EDP Sciences, 2018)
      This paper presents an optimization concept of service fulfillment measurement. Service delivery is assumed free from constraint, while service fulfillment is expected to achieve by maximizing the customer preferences. As ...

    • Optimization of 67% powder loading co-30cr-6Mo μMIM part by Taguchi method 

      Azizah, Wahi; Norhamidi, Muhamad, Prof. Dr.; Hafizawati, Zakaria (Penerbit UTM Press, 2014)
      This research studies the effect of injection moulding parameters on the density of green body of Cobalt-30Chromium-6Molybdenum (Co-30Cr-6Mo) for powder injection moulding (PIM) feedstock. In this paper 20 micron Co-Cr-Mo ...

    • Optimization of alkaline activator / fly ash ratio on the compressive strength of manufacturing fly ash-based geopolymer 

      Mohd Mustafa Al Bakri, Abdullah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; O. A. K. A., Karem; Che Mohd Ruzaidi, Ghazali, Prof. Madya; Rafizah, Abu Rashid; Norazian, Mohamed Noor (Trans Tech Publications, 2012)
      Fly ash and a mixture of alkaline activators namely sodium silicate (Waterglass) and sodium hydroxide (NaOH) solution were used for preparing geopolymer. The aim of this research is to determine the optimum value of the ...

    • Optimization of circular side door beam for crashworthiness analysis 

      Raja Sharmi, Raja Husin; Nur Liyana, Tajul Lile; Sazali, Yaacob, Prof. Dr. (Indonesian Society for Knowledge and Human Development (INSIGHT), 2012)
      Structural optimization related to crashworthiness and energy absorption capability is particularly importance to the automotive industry. The optimization involves highly nonlinear computational analysis and design with ...

    • Optimization of compacting process for Porous Ti-6Al7Nb alloys with Magnesium as a space holder by using Taguchi Method 

      M. N., Fazlen; R. N., Ahmad; N. I. N., Suhaimi; M.S., Abdul Manan; M., Marzuki (Universiti Malaysia Perlis (UniMAP), 2022-10)
      The optimization of compacting process for porous titanium niobium (Ti-6Al-7Nb) alloys with magnesium as a space holder prepared by powder metallurgy process was studied to analyze the significant porosity required in ...

    • Optimization of complex fermentation media for glucose oxidase production using statistical approach 

      Ahmad Anas, Nagoor Gunny; Dachyar, Arbain, Prof. Madya Dr.; Sithamparam, Logachanthirika (Asian Network for Scientific Information (ANSINET), 2013)
      Production cost of enzyme is largely determined by the type of the strain and raw material used to propagate the strain. Hence, selection of the strain and raw materials is crucial in enzyme production. For Glucose oxidase ...

    • Optimization of Fenton oxidation to treat textile wastewater 

      Zamzury, S. H.; Zulhaimi, H. I. (Universiti Malaysia Perlis (UniMAP), 2019)
      Studies were made to assess the performance and optimal condition of Fenton oxidation in textile wastewater. Three factors considered in this process which were concentration of hydrogen peroxide (H2O2), concentration of ...

    • Optimization of hot pressing parameters in membrane electrode assembly fabrication by response surface method 

      Umi Azmah, Hasran; Siti Kartom, Kamarudin, Prof.; Wan Ramli, Wan Daud, Prof. Dato' Ir. Dr. Hj.; Burhanuddin, Yeop Majlis, Prof. Dato' Dr.; Abu Bakar, Mohamad, Prof. Dr.; Abd. Amir, H. Kadhum, Prof. Dr.; M. M., Ahmad (Elsevier Ltd, 2013-07)
      The aim of this research was to study the effect of the membrane electrode assembly fabrication factors on the performance of a passive micro direct methanol fuel cell by studying the hot pressing parameters. The MEA was ...

    • Optimization of machine tools by using the maximum productivity rate 

      A. M., Ahmed Alwaise; Usubamatov, Ryspek, Prof. Dr.; Saifulddin, Abdul Manan, Dr.; Bhuvenesh, Rajamony, Assoc. Prof. Dr. (INSInet Publication, 2011)
      Calculation of the productivity rate and optimization of the operating modes for automatic machine tools today is complex, and in many cases, an unresolved problem. Most equations for calculating the optimal machining ...

    • Optimization of micromilling parameters using Taguchi Method for the fabrication of PMMA based microchannels 

      Muhammad Syafiq, Rahim; Abang Annuar, Ehsan (Universiti Malaysia Perlis (UniMAP), 2020-12)
      A method is proposed for rapid prototyping of Poly (methyl methacrylate) (PMMA) microfluidic devices utilizing a micromilling machine. The present study is to investigates the influence of micromilling machining parameters ...

    • Optimization of multi-tool machining process 

      Ahmed Alwaise, A. M.; Usubamatov, Ryspek, Prof. Dr.; M Zulkeffeli, Zain (International Network for Scientific Information Publication (INSI), 2011-09)
      Optimization of the machining modes for machine tools by criterion of the maximum productivity rate is complex and in many cases an unresolved problem. Increasing of machining modes leads to change the productivity rate. ...

    • Optimization of Protein Content in Earthworm-based Fish Feed Formulation for Catfish (Clarius gariepinus) 

      Zarina, Zakaria; N oor Hasyierah, Mohd Salleh; Alina Rahayu, Mohamed; Ahmad Anas, N.G.; Siti Nur Amirah, Idris (Universiti Kebangsaan Malaysia, 2012)
      Pengoptimuman kandungan protein dalam formulasi makanan ikan berasaskan cacing tanah dikaji. Reka bentuk Faktorial Penuh dan Reka bentuk Komposit Berpusat telah digunakan untuk analisis dalam kajian ini bagi mengenal pasti ...

    • Optimization of protein content in earthworm-based fish feed formulation for catfish (Clarius gariepinus) 

      Zarina, Zakaria, Dr.; Noor Hasyierah, Mohd Salleh; Alina Rahayu, Mohamed; Ahmad Anas, Nagoor Gunny; Siti Nur Amirah, Idris (Penerbit Universiti Kebangsaan Malaysia (UKM)Fakulti Sains dan Teknologi, 2012-09)
      The optimization of protein content in earthworm-based fish feed formulation was investigated in the study. Full factorial design (FFD) and central composite design (CCD) were used as a statistical tool to screen the range ...

    • Optimization of sintering temperature on microwave sintering of the composite iron-chromium reinforced with alumina particles 

      Wan Abdul Rahman Assyahid, Wan Ibrahim; Shamsul Baharin, Jamaludin, Prof. Dr.; Mazlee, Mohd Noor, Dr. (Trans Tech Publications, 2014-01)
      Microwave sintering technology has become attractive and gained interest among material researchers due its capability and advantages over conventional sintering. Since two decades ago, intensive researches on microwave ...

    • Optimization of solids-to-liquid and alkali activator ratios of calcined kaolin geopolymeric powder 

      Liew, Yun Ming; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Mohd Mustafa Al Bakri, Abdullah; Binhussain, M.; Luqman, Musa, Dr.; Khairul Nizar, Ismail, Assoc. Prof. Dr.; Che Mohd Ruzaidi, Ghazali; Cheng, Yong Heah (Elsevier Ltd, 2012-12)
      This paper investigates the effect of S/L and alkali activator ratios on the synthesis of geopolymeric powder. Geopolymeric powder was synthesized by applying geopolymerization process. By adopting the concept of "just ...