Muhammad Asraf - Academia.edu (original) (raw)

Papers by Muhammad Asraf

Journal of Electrical & Electronic Systems Research

International Journal of Academic Research in Progressive Education and Development

This study intends to explore the crowding effect of disaggregated public expenditure on private ... more This study intends to explore the crowding effect of disaggregated public expenditure on private investment in Malaysia from 1980 to 2016 via Vector Error Correction model. Empirical findings show that public spending has an enormous impact on long-term but marginal effect on short-term private investment. Specifically, private investment is significantly crowd-in education and defense of government expenditures while significantly crowd-out health and transportation expenditure in the long term. Nevertheless, there is insufficient evidence on short-run causality between public spending on private investment

Jurnal Teknologi

Fluorescent protein has been applied in various diagnostic and biotechnology application. However... more Fluorescent protein has been applied in various diagnostic and biotechnology application. However, in these applications, the temperature conditions are simulated at higher temperatures of 289K and 300K compared to natural sea anemone Cribrinopsis japonica fluorescent protein. This study evaluates the predictive structure and the molecular dynamic interaction of the protein with its target in different external temperature using ab initio similarity modeling and GROMACS/VMD respectively. Three-dimensional structure of the protein, named cjFP510 were predicted and analysed based on the highest similarity template model of Anemonia sulcata (2c9i) at 66.97%. The predicted model shows alternating a and β helices with longer loops and extra a-helix. cjFP510 was programmed with molecular dynamic simulation with template protein 2c9i as a reference to study its comparative adaptability in two different temperatures of 289K and 300K. cjFP510 was found to be more stable at both temperatures ...

UNIMAS Publisher, Universiti Malaysia Sarawak, 2019

Nova Science Publishers eBooks, 2020

International Journal of Business and Society, 2017

This research was conducted to investigate the relationship between three underlying dimensions o... more This research was conducted to investigate the relationship between three underlying dimensions of knowledge management, i.e. knowledge acquisition, knowledge dissemination and responsiveness to knowledge; and organisational effectiveness with organisation culture as the moderator. Questionnaires were distributed to 159 respondents who held the position of supervisor and above in the manufacturing sector in Malaysia. The results of this study indicated that two dimensions of knowledge management namely knowledge dissemination and responsiveness to knowledge are significant and positively related to organisation effectiveness. Lastly, the results indicated that the organisation culture does not moderate any of the relationships between knowledge management and organisation effectiveness.

Malaysian Journal of Fundamental and Applied Sciences, 2019

Kaolinite is a common component of soils. It was found that the negatively charged kaolinite can ... more Kaolinite is a common component of soils. It was found that the negatively charged kaolinite can act as an adsorbent material and it has the ability to adsorb antimicrobial agents. In this study, natural local kaolinite was used to adsorb gentamicin and cationic surfactant molecules as an improved antimicrobial agent. The gentamicin-loaded surfactant-kaolinite (GSK) was prepared by the attachment of cationic surfactant hexadecyltrimethyl ammonium (HDTMA) 4.0 mM on raw kaolinite creating surfactant-kaolinite (SK) and then, loaded with gentamicin sulphate (50 and 200 mg/L). Gentamicin-loaded kaolinite (GK) was also prepared and compared. All samples were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and CHNS elemental analysis. The characterization results proved that the framework structure of kaolinite was not disrupted after undergoing modification with the antimicrobial agents. The antibacterial activity of the samples was tested against...

The principal objectives of this study are twofold. Firstly, it attempts to evaluate the technica... more The principal objectives of this study are twofold. Firstly, it attempts to evaluate the technical efficiency and productivity growth of 56 global airlines that operate in two types of business models namely full cost and low cost carriers. Secondly, this study aims to investigate the influence of outsourcing extent and economic development on the performance of airlines from the perspectives of technical efficiency and productivity growth. The study assesses the technical efficiency of full cost and low cost carriers by applying the concept of metafrontier technical efficiency which is introduced by O’ Donnell et al. (2008). Next, the evaluation of productivity change employs the metafrontier concept of Malmquist Productivity Index (MPI) as suggested by Oh and Lee (2010). Finally, the influence of outsourcing and economic development on the technical efficiency and productivity growth are estimated using the One Step System, Generalized Method of Moments estimator (GMM). The findin...

ARPN journal of engineering and applied sciences, 2017

Automated monitoring of nutrient deficiencies by computers provides more accurate and precise inf... more Automated monitoring of nutrient deficiencies by computers provides more accurate and precise information on current plant health status, which improves the effectiveness of fertilization management on large scale agricultural projects. In comparison to the traditional method which involves judging the deficiencies by personal observation, it is naturally more costly to hire agricultural experts who are more experienced. Besides, judgments by observations are also prone to misinterpretations, which will lead to incorrect applications of fertilizers. In this paper, the automatic detection via Fuzzy Inference System (FIS) is introduced as an automatic classification system for identifying the type of nutrient deficiencies in plant by emulating the judgment made by an agricultural expert when observing the state of the plant leaflets. The main objective of this study is to propose a design of Mamdani-FIS that models the classification of the deficiency type and severity. Oil palm tree ...

Particuology, 2021

Abstract The capability of synthesized zeolite A (SZ) to immobilize Ag ions (Ag-SZ) and Ag nanopa... more Abstract The capability of synthesized zeolite A (SZ) to immobilize Ag ions (Ag-SZ) and Ag nanoparticles (AgNp-SZ) were comparatively studied. A novel approach of in situ biosynthesized AgNP-incorporated synthesized zeolite A (AgNp-SZ) was synthesized at an optimum volume of 0.4 mL of the Orthosiphon aristatus (O. aristatus) leaves plant extract (5%) using an in situ approach. In comparison, Ag-SZ was produced by loading the synthesized zeolite with Ag ions. All synthesized materials were characterized for their morphologies and physicochemical properties. The characterization analyses validate that the biosynthesized AgNP (

Online Information Review, 2020

PurposeThis study examines the role of continuous trust (i.e., a trust that develops over time as... more PurposeThis study examines the role of continuous trust (i.e., a trust that develops over time as a result of continuous usage interactions) in determining customers' intention to continue using online product recommendations (OPRs).Design/methodology/approachBased on information system (IS), continuance model, and continuous trust, we propose that continuous trust will influence customers’ intention to continue OPRs’ use directly and indirectly via their satisfaction and usefulness of the OPRs. The research model is tested using data collected via an online survey from 626 existing users of OPRs in 15 different countries.FindingsThe empirical results revealed that continuous trust is shown to be a significant predictor of customers’ intention to continue OPRs use for future purchases. Additionally, the customers’ perceived confirmation and continuous trust positively influence their perceived usefulness and satisfaction with the OPRs, which subsequently influence customers’ OPR...

TELKOMNIKA (Telecommunication Computing Electronics and Control), 2020

PROCEEDINGS OF THE 3RD INTERNATIONAL SEMINAR ON METALLURGY AND MATERIALS (ISMM2019): Exploring New Innovation in Metallurgy and Materials, 2020

Malaysian Journal of Fundamental and Applied Sciences, 2020

Commercial water vending machines are gaining popularity nowadays among the general public, proba... more Commercial water vending machines are gaining popularity nowadays among the general public, probably due to the ease of obtaining clean drinking water. However, improper maintenance of the machines can lead to bacterial contamination. Hence, this study aimed to investigate and determine the microbiological characteristics of drinking water from Water Vending Machines (WVM) by isolating and characterizing culturable bacteria in the water and nozzle swab samples. The samples were obtained from WVM at eight different locations around Johor Bahru, Johor, Malaysia. Several unique bacterial isolates were found, from both Gram-positive and Gram-negative groups. Polymerase chain reaction amplification and 16S rRNA sequence analysis suggested that these isolates are from Pseudomonas, Bacillus, and Stenotrophomonas genera. In situ water quality tests which include pH, conductivity, and total dissolved solids were also conducted. Two samples from the inlet source have pH and conductivity value...

International Journal of Online and Biomedical Engineering (iJOE), 2018

Nowadays, the emerging trend of utilizing the internet technology to improve teaching methods has... more Nowadays, the emerging trend of utilizing the internet technology to improve teaching methods has caught the attention of many researchers. The education sector is the particular sector which has been getting the influence to implement more advanced teaching methods, and this can be seen through the application of the monitoring system, remote control, and even data acquisition through the Internet. Therefore, this study demonstrates the development of the interactive system via the Internet for the remote access to the equipment known as LD-Didactic temperature system which is used in the laboratory. This particular system is developed using an Arduino-Espresso8266 and LabVIEW platform which is integrated with Blynk software in order to remotely control the Proportional, Integral, and Derivative (PID) setting. Furthermore, the proposed framework is specifically focused on the PID temperature control system, which allows students to learn and simulate the concept of the control sche...

Medical Physics, 2018

PurposeCCD cameras are employed to image scintillation and Cherenkov radiation in external beam r... more PurposeCCD cameras are employed to image scintillation and Cherenkov radiation in external beam radiotherapy. This is achieved by gating the camera to the linear accelerator (Linac) output. A direct output signal line from the linac is not always accessible and even in cases where such a signal is accessible, a physical wire connected to the output port can potentially alter Linac performance through electrical feedback. A scintillating detector for stray radiation inside the Linac room was developed to remotely time‐gate to linac pulses for camera‐based dosimetry.MethodsA scintillator coupled silicon photomultiplier detector was optimized and systematically tested for location sensitivity and for use with both x rays and electron beams, at different energies and field sizes. Cherenkov radiation emitted due to static photon beams was captured using the remote trigger and compared to the images captured using a wired trigger. The issue of false‐positive event detection, due to additi...

Malaysian Journal of Fundamental and Applied Sciences, 2018

In this study, the simultaneous action of surfactant modified clinoptilolite (SMC) as adsorbent f... more In this study, the simultaneous action of surfactant modified clinoptilolite (SMC) as adsorbent for dyes and its antibacterial activity was investigated. Methylene blue (MB) and acid orange 7 (AO7) represent cationic and anionic dyes, respectively were used as adsorbate in this study and the antibacterial activity was studied against Gram-negative (Escherichia coli ATCC 11229) and Gram-positive bacteria (Staphylococcus aureus ATCC 6538 and Enterococcus faecalis ATCC 2921). Initially, natural zeolite clinoptilolite was modified with 3 different concentrations (0.1, 1.0 and 4.0 mM) of cationic surfactant hexadecyltrimethyl ammonium bromide (HDTMA-Br). The SMC samples were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), amount of HDTMA adsorbed and dispersion behaviour. Result from XRD shows that the HDTMA-Br molecules caused no effect on primary structure of the clinoptilolite since the clinoptilolite structure remained the same after modifica...