UniMAP RIS :: Browsing by Type "proceedings-article"

This research study is implemented to identify the problems faced by employees that bring of resistance to change in private and public organizations. The objection made by employees is the main obstacles for organization to improve their performance and achieve the goals of company. This study involves number of factors that have been chosen from the previous studies as the components of resistance to change among employees. This study will touch on some factors that contributing to this problem such as employee behaviour, organization culture and employee perception. The research method used in this study is the quantitative research design by using questionnaire that will be distributed to 100 of respondent from the public and private sector in the state of Perlis. The analysis that conducted in this study includes correlation analysis, regression analysis and cross tabulation analysis to investigate the relationship between the selected variables to achieve the research objectives. From the study, the result showed the variables involved such as employees behaviour and organization culture are not having a strong influence to the causes of resistance to change but the employees perception has a strong influence to the causes of employee's resistance to change that would be run by the organization. This study is important and helpful to provide a guideline for the local organization to plan the change management in nowadays and for the future organization.

Publication

An Analysis of Interpolation Implementation for LNS Addition and Subtraction Function in Positive Region

( 2016)

Siti Zarina Md Naziri

;

Rizalafande Che Ismail

;

Ali Yeon Md Shakaff

Interpolation is among of the most popular approach used in approximating the values in logarithmic number system (LNS) arithmetic design. This method that often combines with lookup tables (LUTs) manages to produce efficient LNS design in area, latency and accuracy. Current research proves that the combination of interpolators with co-transformation in LNS subtraction had shown extreme improvements in terms of speed and area, which is comparable to floating point (FLP) performance. Taking the advantage, this research had been conducted to analyze the implementation of these three interpolators, which are Taylor, Lagrange and modified Lagrange, in a 32-bit environment of the LNS addition and subtraction procedures with the first-order co-transformation in positive region. The designs were analyzed in two categories, which are the accuracy towards FLP and the total memory consumption. The best interpolator was selected based on the most optimum area consumption design with manageable accuracy in FLP limit. The outcome of this analysis could benefit further improvements in LNS design.

Publication

Application of PSO to determine the HEPWM switching angles of a three phase cascaded multilevel inverter

( 2015)

Baharuddin Ismail

;

Syed Idris Syed Hassan

;

Mohd Hafiz Arshad

;

Muzamir Isa

;

Rizalafande Che Ismail

;

Mohamad Nur Khairul Hafizi Rohani

Publication

Application of PSO to determine the HEPWM switching angles of a three phase cascaded multilevel inverter

( 2015)

Baharuddin Ismail

;

Syed Idris Syed Hassan

;

Mohd Hafiz Arshad

;

Muzamir Isa

;

Rizalafande Che Ismail

;

Mohamad Nur Khairul Hafizi Rohani

Publication

Arithmetic addition and subtraction function of logarithmic number system in positive region: An investigation

( 2015)

Siti Zarina Md Naziri

;

Rizalafande Che Ismail

;

Ali Yeon Md Shakaff

Logarithmic number system or LNS has become an optimal choice in digital image processing instead of floating point (FP) system based on latest researches in LNS. Digital image processing which deals with a lot of complex operations such as multiplication and division, makes LNS as a great choice of implementation. However, the implementation had been restricted by the addition and subtraction function in LNS arithmetic as these functions entail complex procedures and circuitry. As its huge potential to be a substitution of FP, there is an urgent need for LNS to improve the performance of both operations. Hence, various studies had been conducted in this area, however most of the research concern the implementation of these operations in the negative region. Therefore, this study is conducted with the objective on the exploration of both LNS addition and subtraction operations in the positive region and highlights the potential areas for design modifications and improvements. Then, these enhancements will be combined with other arithmetic functions in creating an optimum LNS design to be utilized in any digital image processing system.

Publication

Breast surface variation phase map analysis with digital fringe projection

( 2019)

Wan Mokhzani Wan Norhaimi

;

Zaliman Sauli

;

Hasnizah Aris

;

Mukhzeer Mohamad Shahimin

;

MAM Azmi

;

K Wong

;

Vithyacharan Retnasamy

;

Rajendaran Vairavan

;

Christopher R. Valenta

;

Masafumi Kimata

Publication

Characterization of silica powder prepared from acid leaching and thermal treatment of RHA

( 2024)

Mudrikah Sofia Mahmud

;

Farah Diana Mohd Daud

;

Norshahida Sarifuddin

;

Hafizah Hanim Mohd Zaki

;

Norhuda Hidayah Nordin

;

Nur Farahiyah Mohammad

Publication

Coagulation-flocculation process for turbidity removal using alum sludge from water treatment plant

(AIP Publishing, 2023)

J. H. Chan

;

Nor Aida Yusoff

;

Noor Ainee Zainol

;

Nor Munirah Rohaizad

;

Khairunissa Syairah Ahmad Sohaimi

The aim of this research was to utilize alum sludge, also known as water treatment residual (WTR) from water treatment plant for preparing sludge reagent product (SRP) as coagulant in removing turbidity of kaolin suspension and river water. The WTR was characterized by examine the inorganic component (functional group, and surface morphology using X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscope (SEM) respectively. WTR had an amorphous structure and contained high aluminum metal constituents with 35.4 %, which can be recovered as coagulant. Acidification was conducted to recover these aluminium in WTR by using sulphuric acid and produced SRP. The optimum condition of SRP prepared from WTR was evaluated through parameters such as sludge concentration, normality and dosage of acid. It has been observed that 1 % sludge concentration acidified with 0.08 ml/ml sludge and 2.0 N H2SO4 of SRP gave the maximum percentage turbidity removal of 99.46 %. The performance of SRP in coagulation-flocculation process by using a standard jar test was studied based on the effect of pH, kaolin concentration, and SRP dosage. The highest percentage turbidity removal (99.79 %) was obtained at pH 7, kaolin concentration of 800 mg/L, and SRP dosage of 80 mg/L. The SRP performance was also compared to alum coagulant. The percentage turbidity removal of river water for both coagulants were almost similar, with 90.60 % for SRP and 91.18 % for alum respectively. Thus, SRP has the potential to replace commercial coagulant in water treatment plant in terms of costing and sustainability.

Publication

Coconut husk based Lignosulfonate as sacrificial agent in surfactant flooding

(AIP Publishing, 2023)

Nik Muhammad Azhar Nik Daud

;

Wan Muhammad Kamal Wan Jaafar

;

Norhisyam Ismail

;

Muhamad A. Manan

;

Ahmad Kamal Idris

;

Radzuan Junin

Surfactant flooding is one of the techniques in chemical enhanced oil recovery (CEOR). The purpose of this technique is to reduce the interfacial tension between brine and oil in the reservoir so that the oil can be mobilized to the production well. However, the surfactant tends to adsorb on the rock minerals making it less efficient. The adsorption can be minimized by using three methods: matching surfactant type to specific reservoir rock by surface charge, application of surfactant mixtures to enhance the surfactant capability and using a sacrificial adsorbate to block the adsorption site on the rocks. This study will focus on utilizing the lignosulfonate (LS) from coconut husk as a sacrificial agent to increase the efficiency of surfactant flooding. Lignin was extracted from coconut husk before sulfonated using sodium sulphite, Na2SO3 to form lignosulfonate. FTIR was used to characterize the lignin and lignosulfonate and compare them with the commercial product. The oil (paraffin) displacement experiment was then conducted using 5% illite and 95% sand to simulate Malaysia's sandstone reservoir mineral composition. Two types of surfactant were studied; anionic (Sodium Dodeclyl Sulfate-SDS) and nonionic (4-octylphenol polyethoxylate-TX100). The percentage of oil recovery was calculated based on the volume of oil recovered from the original oil in place (OOIP). The displacement tests show that oil recovery was increased from 2.52% to 3.10% for SDS after the preflush and from 1.36% to 2.00% for TX100 after preflush with LS. This increase corresponds to 23.6% and 47.1% increments in oil cerovery from the test without preflush, respectively. These results have shown that the LS has the potential to be used as a sacrificial agent to increase the efficiency of surfactant flooding.

Publication

Design and implementation of bluetooth microcontroller in system-on-chip (SoC)

( 2024)

Hang Suan Wang

;

Asral Bahari Jambek

;

Zulfiqar Ali Bin Abd Aziz

;

Mohd Nazrin Md Isa

;

Azizi Harun

;

Shaiful Nizam Mohyar

Publication

Development of copper busbar by silver plating under non-linear load operation using finite element method (FEM)

( 2023)

M. H. A. Aziz

;

M. M. Azizan

;

Zaliman Sauli

;

M. W. Yahya

Publication

Development of copper busbar by silver plating under non-linear load operation using finite element method (FEM)

( 2023)

Muhamad Hafiz Ab Aziz

;

M. M. Azizan

;

Zaliman Sauli

;

Mohd Wafiuddin Yahya

Publication

Development of green-Naghdi level I equation

( 2024)

Siti Maryam Hafiza Mohd Kanafiah

;

Nursalasawati Rusli

;

Mohd Ridza Mohd Haniffah

Publication

Development of posture estimation monitoring system for back pain diseases

(AIP Publishing, 2020)

N. A. S. Z. Abidin

;

S. Mohamad

;

Amarul Talip

The common problems occured among the people who need to sit in a long time are the affected postural position that lead to the back pain diseases. The sitting position of a person determine the health condition of the backbone. Many cases of back pain diseases because of the bad routine are reported for both gender. By maintaining the good posture and actively move signifanctly improved the health condition. Nowadays, people all use internet in their daily life including for the healthcare management. Wearable electronic device that improve the quality of life became the main focus of this century from simple hearing aid to the full health monitoring smartwatches with different functions and specifications. The project starts with the design stage, software modification and hardware construction with using an IMU sensor, a flex sensor and a microprocessor-WeMos ESP8266 D1 R2 with Wi-Fi built in. This report devote the design, development and experimental process of this wearable posture estimation monitoring system that uses multiple sensors to measure the back posture of a user in real time and alert them with the notification from their smartphone.

Publication

Development of universal OCDMA DW code family equation and structure

( 2024)

Syed Mohammad Ammar

;

Norshamsuri Ali @ Hasim

;

Mohamad Naufal Mohamad Saad

;

Syed Alwee Aljunid Syed Junid

;

Rosdisham Endut

Publication

Double layer controller for distributed software defined network in mitigating cyber attacks

( 2024)

M. Y. Wong

;

Naimah Yaakob

;

Mohd Rashidi Che Beson

;

Nur Idawati Md Enzai

;

R Badlishah Ahmad

Publication

Effect of different substrates and white Oyster mushroom loading on production of fungal foam

(AIP Publishing, 2023)

Noorulnajwa Diyana Yaacob

;

Hanafi Ismail

;

Nor Munirah Rohaizad

In this study, agricultural wastes including rice husks, banana leaves and teak leaves were used to produce fungal foam through the cultivation with Pleurotus ostreatus fungi. The fungi are inoculated using different substrates and inoculum loadings. The mechanical properties of the foam produced were analysed. The best substrate and inoculum loading were proposed. Among the three substrates used, banana leave produced the best fungal foam in term of mechanical properties at 10 % w/w inoculum loading. The fungal foam can withstand forces high up to 30458.52 gF and have the resilience and springiness of 0.381 and 0.771, respectively. In summary, banana leave fungal foam is suitable as an alternative to the commercial Styrofoam.

Browsing by Type "proceedings-article"

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