Proposed Minimum Luminous Range for Existing Lighthouses in This Age of Global Navigation Satellite Systems by Using the Correlation between Light Intensity and Luminous Range

Ahmad Faizal AHMAD FUAD,Noor Apandi OSNIN,Mohd Naim FADZIL,Mohd Zamani AHMAD 국제이네비해양경제학회 2017 International Journal of e-Navigation and Maritime Vol.6 No.1

Long-range visual marine aids to navigation are not required for current marine navigational practices. Therefore, the objective of this study was to develop a minimum luminous range for major lighthouses that are still in existence to sustain the operation of the lighthouses in the future. Two steps were involved in the determination of the minimum luminous range, namely the modification of the existing geographical range formula, and the finding of a strong linear correlation between the light intensity and the luminous range with the lowest gradient possible in a graph. The application of the minimum luminous range would eliminate the loom of light beyond the geographical range of the lighthouse. This approach was applied to seven major lighthouses in Peninsular Malaysia, which resulted in a minimum luminous range of between 12 nm to 14 nm, which was a reduction from the existing range of 18 nm to 25 nm. The validation of the minimum luminous range was performed in two ways; using a Full Mission Ship Simulator (FMSS), and matching the proposed minimum luminous range with the lighting system available. The results of the validation by using the FMSS between the luminous range of 25 nm and 14 nm showed that the light could be sighted and identified at 58.7 nm and 58.6 nm, respectively, which was, therefore, not significant. The validation by matching with the lighting equipment available in the market showed that the eight-tier VLB-44, which has replaced the rotating lighting system in the US since 2008, was highly matched with the proposed minimum luminous range. This further validated the minimum luminous range. The minimum luminous range is sufficient for current navigational uses and may reduce the costs for procuring and maintaining lighting systems, and will be able to sustain the operations of lighthouses in this GNSS age.

The Effect of Liquidity Creation on Bank Capital: A Case Study in Indonesia

Ahmad FUAD,Disman DISMAN,Nugraha NUGRAHA,Mayasari MAYASARI,Ahmad FUAD 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.5

This paper aims to examine the moderating role of bank competition on the effect of liquidity creation on bank capital. We measure bank competition using the Lerner index approach, liquidity creation using the Catfat approach, and bank capital using the capital to total asset ratio approach. This test also considers control variables from bank-specific factors such as Return on Assets, Loan to Deposit Ratio, and Non-Performance Loans as well as macroeconomic factors such as Gross Domestic Product, inflation, and Bank Indonesia interest rates. The sampling technique used was purposive sampling. The data sample obtained was 96 banks from a population of 114 banks in Indonesia which consistently operated during the period 2008–2018. Hypothesis testing uses panel data regression analysis techniques through the first model of the Hayes method. The results show that the negative effect of liquidity creation on bank capital depends on competition. We found that bank competition at any level (low, medium, high) negatively moderates (weakens) the effect of liquidity creation on bank capital in all banks. This finding is consistent with the view that banks may strengthen their capital in response to bank competition which may decrease the level of bank liquidity creation.

The Utilisation of Pisang Island as a Platform to Support the Current Safety and Security Needs of Marine Navigation in the Straits of Malacca

Ahmad Faizal AHMAD FUAD,Mohd Sharifuddin AHMAD,Mohd Naim FADZIL,Noor Apandi OSNIN 국제이네비해양경제학회 2017 International Journal of e-Navigation and Maritime Vol.7 No.1

Current marine navigational practice relies less on long-range visual marine signals such as lighthouses for reference purposes. This is due to the availability of Global Navigation Satellite Systems (GNSS), which are integrated with other navigational aids on ships. Therefore, the objective of this study is to review the function of Pisang Island lighthouse and to propose the most relevant use of Pisang Island for current navigational needs. The function of the lighthouse was reviewed according to the IALA Navigational Guide and the AIS data image. The result showed that the most suitable navigational use of the lighthouse is to act as a reference for Line of Position (LOP). The AIS data image indicated that mariners are not using Pisang Island lighthouse for LOP. The trend in the Straits of Malacca (SoM) was compared with the trend in the Straits of Dover, UK. The selected experts verified that LOP was not practised there. As a specific example, a tanker ship route in the South China Sea was used to further support that LOP was not practised. This evidence supported the view that Pisang Island lighthouse is less relevant for current navigational practice and does not directly support the coastal state VTS operation and the establishment of the marine electronic highway. Furthermore, the existing shore-based VTS radar has limitations on range and the detection of targets near Pisang Island. Therefore, this study proposes the establishment of a new radar station on Pisang Island at the existing site of the lighthouse. The proposed new radar station on Pisang Island will add to the existing coverage of the VTS radar, bridging the coverage gaps to overcome the weakness of the existing shore-based radar and improve the safety and security of marine navigation in the SoM.

Developing Forensic Readiness Secure Network Architecture for Wireless Body Area Network (WBAN)

Abdul Fuad Abdul Rahman,Rabiah Ahmad,Madihah Zulfa Mohamad 보안공학연구지원센터 2014 International Journal of Security and Its Applicat Vol.8 No.5

Oleuropein Is Responsible for the Major Anti-Inflammatory Effects of Olive Leaf Extract

Khaled Qabaha,Fuad AL-Rimawi,Ahmad Qasem,Saleh A. Naser 한국식품영양과학회 2018 Journal of medicinal food Vol.21 No.3

Olive leaves are rich in polyphenolic compounds that are known to have antioxidant, antimicrobial, and anti-inflammatory activities. Therefore, olive leaf extract (OLE) is considered as a natural supplement. In this study we evaluated the antibacterial and the anti-inflammatory effect of OLE and its individual phenolic components in vitro. Polymorphonuclear cells (PMNCs) were isolated from the whole blood using Histopaque solution and cultured in RPMI-enriched medium. Tumor necrosis factor α (TNFα) level was determined by ELISA after 24 h of lipopolysaccharide stimulation. The antibacterial activity of OLE was determined by well diffusion assay. We found a significant decrease in TNFα secretion level in PMNCs culture treated with OLE. Oleuropein is the only OLE component that has shown anti-inflammatory effects at a concentration of 20 μg/mL. Furthermore, OLE exhibited antibacterial activity against some gram positive bacterial strains; however, gram negative bacterial strains were resistant to OLE. Downregulation of TNFα secretion in PMNCs culture in response to OLE treatment indicates that this polyphenol-rich extract has an anti-inflammatory effect, and oleuropein is the major OLE component responsible for this effect. The antibacterial activity of OLE is limited to gram positive bacteria.

Wheel over point mathematical model

Kamis, Amir Syawal,Fuad, Ahmad Faizal Ahmad,Ashaari, Azmirul,Noor, Che Wan Mohd Techno-Press 2021 Ocean systems engineering Vol.11 No.3

This research proposes an improved mathematical model which can be used to calculate wheel over point (WOP) for a ship's route optimisation. WOP is a marking made on the charted course to demonstrate where the ship must initiate the course alteration to guarantee that it follows the route. The advance transfer technique (ATT) was used to determine WOP. Through practical exercise, two gaps were identified in ATT. From there, an improved mathematical model, namely ATMM, were developed. A preliminary manoeuvring analysis was then carried out in this study using a ship simulator for ATMM and the existing ATT. Then, the cross-track distance produced by both methods were compared to verify the difference. It was found that the ATMM produced better result in maintaining a ship on its course. This research's mathematical model is expected to be used onboard ship and used in the Electronic Chart Display and Information System to aid navigator in making more effective course alteration.

Factor Related to Operational of Marina in West Coast Peninsular Malaysia

Syahmi Firdaus ZAMRI,Ahmad Faizal AHMAD FUAD,Mohd Hafizi SAID 국제이네비해양경제학회 2020 International Journal of e-Navigation and Maritime Vol.15 No.1

Marina is a small port located along a coastline that provides facilities and services for small boats and yachts. The main facilities of marina are pontoon, freshwater, and power supplies. Marina also provides service for boat maintenance and service, and security. In Malaysia, the marina is operated by private companies and Marine Department Malaysia. All the marinas in Malaysia provide the same facilities and services, however they are not operating at the same level. Few marinas had closed their operation due to insufficient number of boats arrived to their marina. The reason of this issue is lack of study about marina operation and management in Malaysia. Further study should be done in this field to overcome this issue and increased the growth of economy for marina. Therefore, the objective of this study to determine the factors to establish a marina in Malaysia and to identify the reason certain marina less performed. This research focused on the marina operators on the west coast of Peninsular Malaysia. The literature review was used to identify the factors to establish a marina. The Analytic Hierarchy Process (AHP) approach was used to analyse the data. This method had ranked the crucial factors from the highest to the lowest percentage. Four main criteria to establish a marina had been identified, namely locations, facilities, services, and promotion. Besides that, there also the sub-criteria for all the main factor to describe it. All the identified factors had been analysed to find the most important factor. The consolidate result showed that geography, security, berthing, purpose, boat chandlery and boat service are the highest percentage among other factors. It concludes that it is the most important factor to establish a marina. These results can be used to improve the operation of marina in Malaysia by focusing on these aforementioned factors.

Angiogenic Potential of Extracellular Matrix of Human Amniotic Membrane

Siti Nurnasihah Md Hashim,Muhammad Fuad Hilmi Yusof,Wafa’ Zahari,Khairul Bariah Ahmad Amin Noordin,Thirumulu Ponnuraj Kannan,Suzina Sheikh Abdul Hamid,Khairani Idah Mokhtar,Azlina Ahmad 한국조직공학과 재생의학회 2016 조직공학과 재생의학 Vol.13 No.3

Combination between tissue engineering and other fields has brought an innovation in the area of regenerative medicine which ultimate aims are to repair, improve, and produce a good tissue construct. The availability of many types of scaffold, both synthetically and naturally have developed into many outstanding end products that have achieved the general objective in tissue engineering. Interestingly, most of this scaffold emulates extracellular matrix (ECM) characteristics. Therefore, ECM component sparks an interest to be explored and manipulated. The ECM featured in human amniotic membrane (HAM) provides a suitable niche for the cells to adhere, grow, proliferate, migrate and differentiate, and could possibly contribute to the production of angiogenic micro-environment indirectly. Previously, HAM scaffold has been widely used to accelerate wound healing, treat bone related and ocular diseases, and involved in cardiovascular repair. Also, it has been used in the angiogenicity study, but with a different technical approach. In addition, both side of HAM could be used in cellularised and decellularised conditions depending on the objectives of a particular research. Therefore, it is of paramount importance to investigate the behavior of ECM components especially on the stromal side of HAM and further explore the angiogenic potential exhibited by this scaffold.

Assessment of the antimicrobial and free radical scavenging activities of Moluccella spinosa, Helichrysum sanguineum, and Styrax officinalis folkloric medicinal plants from Palestine

Nidal Jaradat,Motasem Al‑Masri,Abdel Naser Zaid,Fatima Hussein,Khalid Ahmad Shadid,Fuad Al‑Rimawi,Khaled Shayeb,Afnan Sbeih,Alia Eid 경희대학교 융합한의과학연구소 2018 Oriental Pharmacy and Experimental Medicine Vol.18 No.2

The emergence of pathogenic microbes with increased resistance to established antibiotics provides a major incentive for the discovery of new antimicrobial agents. Herbals may provide valuable solutions for this global problem. In addition, the replacement of harmful synthetic antioxidants with natural ones may prevent various serious diseases. The present investigation describes for the first time the antioxidant and antimicrobial activities of the aqueous and organic extracts of Helichrysum sanguineum, Moluccella spinosa and Styrax officinalis plants aerial parts. The free radical scavenging activity was estimated using the 2,2-diphenyl-1-picrylhydrazyl method, while the antimicrobial activity was evaluated against selected microbial strains from American Type Culture Collection and clinical isolates such as Shigella sonnie, Staphylococcus aureus, Enterococcuss feacium, Escherichia coli, Pseudomonas aeruginosa, Candida albicans, Epidermophyton floccosum and Methicillin Resistant Staphylococcus aureus (MRSA) using minimum inhibitory concentration assay. A mixture of phytochemical compounds was found in all of the studied plants extracts which also showed remarkable potentials of antioxidant and antimicrobial activities. The current study provides initial data that justify the use and importance of these plants in the Palestinian traditional medicine. In addition, it provides evidence that the aqueous and organic extracts of H. sanguineum, M. spinosa and S. officinalis exhibited interesting antioxidant activity comparing with Trolox. Furthermore, the organic extract of H. sanguineum strongly exhibited bacterial growth of S. aureus, E. faecium and MRSA which suggested to be used as antibiotic alternative or as sufficient natural food preservative.