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Effect of Rushton Impeller Speed on Biogas Production in Anaerobic Digestion of Continuous Stirred Bioreactor
Research Output | Dar Al-hikmah Library | IIUM Only

The formation of biogas in an anaerobic digester is a complex fermentation process of organic compounds involving microorganisms. The biogas production can be enhanced by using a mixer, which depends on its rotational speed. This study investigated the effect of mixer rotational speed on biogas production in an anaerobic continuous stirred bioreact

Price Discovery Between Index Futures and Spot Markets
Research Output | Dar Al-hikmah Library | IIUM Only

In this paper, we utilize high-frequency 15-seconds intraday data from September 2018 through to August 2019 to investigate price leadership dynamics between futures and spot markets in Malaysia. We employ Maximal Overlap Discrete Wavelet Transform to evaluate interdependence between contemporaneous futures and spot returns spaced at 15 seconds. We

Knee Associated Problems and Functional Mobility Among Adults with Knee Osteoarthritis
Research Output | Dar Al-hikmah Library | IIUM Only

Knee osteoarthritis (KOA) is a major cause of disability and significantly reduce quality of life (QOL). There is limited information about knee associated problems and functional mobility among Malaysian adults with KOA. The aim of our study was to examine knee associated problems and functional mobility among this population. Forty-five (45) adul

Medieval Muslim Scholars: Teachers, Missionaries and Theoreticians, Qādi al-Nu'mān as a Case Study
Research Output | Dar Al-hikmah Library | IIUM Only

One distinct character of education in medieval Islam is the fact that teaching and learning activities were not regarded by both the shuyūkh (master scholars) and talaba or tullāb (students) as a waẓīfah (job) for the former and potential source of income after graduation for the latter. On the contrary, both segments took teaching and learni

Novel Distributed Algorithm for Coalition Formation in Cognitive Radio Networks for Throughput Enhancement Using Matching Theory
Research Output | Dar Al-hikmah Library | IIUM Only

In this paper, a novel algorithm is proposed for increasing the throughput in cognitive radio networks by forming coalitions among cognitive radio users in AWGN and fading channel environment. Although there have been numerous studies exploring the benefits of coalition formation in cognitive radio networks from the game theory perspective, there a

Novel Distributed Algorithm for Coalition Formation for Enhanced Spectrum Sensing in Cognitive Radio Networks
Research Output | Dar Al-hikmah Library | IIUM Only

In this paper, we propose a novel algorithm for improving spectrum sensing in cognitive radio networks by forming coalitions among cognitive radio users in a fading channel environment. We use concepts from matching theory, specifically the stable marriage problem, to formulate the interactions among the cogni- tive radio users as a matching game f

Towards a New Approach in the Teaching of the Holy Qur’an
Research Output | Dar Al-hikmah Library | IIUM Only

From the early days of Islam, dynamics of Islamic education in the entire Muslim world have always been associated with the teaching of the holy Qur’an. At the basic elementary level, institutions which provided Qur’an education were often supervised by the ruling authorities, private charitable philanthropists, or pious and people. This educat

m-Learning Among Higher Learning Students in Korea: Implications on Predicting Factors and Model
Research Output | Dar Al-hikmah Library | IIUM Only

With the advent of communication technology evolution, learning becomes flexible and accessible at any time and anywhere. Educational technology researchers have extensively integrated the Theory of Acceptance Model (TAM) and Planned Behavior to link the beliefs and actions in mobile learning. This study attempted to predict a hypothesized model of

Thermal Modelling and Analysis of Batik Canting Design
Research Output | Dar Al-hikmah Library | IIUM Only

Canting or ‘tjanting’ is a traditional hand tool that is used to apply wax in lines and fine dots on a cloth to create beautiful batik designs. In this study, the thermal and structural characteristics of the wax determined via differential scanning calorimetry (DSC) and fourier transform infrared (FTIR) spectroscopy respectively. The actual te

Modelling and Analysing Deadlock in Flexible Manufacturing System Using Timed Petri Net
Research Output | Dar Al-hikmah Library | IIUM Only

Flexible manufacturing system (FMS) has several advantages compared to conventional systems such as higher machine utilization, higher efficiency, less inventory, and less production time. On the other hand, FMS is expensive and complicated. One of the main problems that may happen is the deadlock. Deadlock is a case that happens when one operation

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