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Integration of CityGML and Oracle Spatial for implementing 3D network analysis solutionsand routing simulation within 3D-GIS environment

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Geo-Spatial Information Science 2013年第4期16卷 221-237页

作者： Umit ATILA ismail Rakip KARAS Alias abdul-RAHMAN Department of Computer Engineering Karabuk UniversityKarabukTurkey Department of Geoinformatics Universiti Teknologi MalaysiaJohorMalaysia

3D navigation within a 3D-GIS environment is increasingly getting more popular and spreading to various *** thelast decade,especially after the 9/11 disaster,evacuating the complex and tall buildings of today in case of emergencyhas been an important research area for *** of the current navigation systems are still in the 2D environmentand that is insufficient to visualize 3D objects and to obtain satisfactory solutions for the 3D ***,there is currently still a lack of implementation of 3D network analysis and navigation for indoor spaces in respect *** objective of this paper is to investigate and implement 3D visualization and navigation techniques andsolutions for indoor spaces within *** realizing this,we have proposed a GIS implementation that is capable ofcarrying out 3D visualization of a building model stored in the CityGML format and perform analysis on a networkmodel stored in Oracle *** proposed GUI also provides routing simulation on the calculated shortest paths withvoice commands and visual instructions.

关键词： 3D-GIS 3D network analysis indoor navigation evacuation

Novel sources of bioactive compounds in coconut(Cocos nucifera L.)water from different maturity levels and varieties as potent skin anti-aging strategies and anti-fatigue agents

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Food Bioscience 2023年第1期51卷 914-926页

作者： Hani Hafeeza halim Mohd Sabri Pak Dek Azizah abdul Hamid Nazamid Saari Mohd Izwan Mohd Lazim Faridah Abas Ahmad Ngalim Amin ismail Ahmad Haniff Jaafar Department of Food Science Faculty of Food Science and TechnologyUniversiti Putra Malaysia43400UPM SerdangSelangorMalaysia Biotechnology and Nanotechnology Research Centre Malaysian Agricultural Research and Development Institute(MARDI)HeadquartersSerdangP.O.Box 1230150774Kuala LumpurMalaysia Institute of Bioscience University Putra Malaysia43400SerdangSelangorMalaysia MARDI Bagan Datuk Station Mail Box 2536307Sungai SumunPerakMalaysia Faculty of Medicine and Health Sciences Universiti Putra Malaysia43400SerdangMalaysia

Coconut water(CW)is a popular natural hydration drink in tropical *** is rich in essential electrolytes,vitamins,minerals,and bioactive compounds with functional ***,this work aimed to evaluate the functional properties(i.e.,antioxidant and anti-aging activities)and to determine selected bioactive compounds in young and mature CW from the four most popular coconut varieties in Malaysia namely,Aromatic Green Dwarf(PDN),Malaysian Yellow Dwarf(MYD),MATAG(MYD×Tagnanan)and MAWA(MYD×West African Tall).Spectrophotometric and liquid chromatography methods were used to quantify the changes in the tested *** is shown that the quantification of selected bioactive compounds and functional activities of CW displayed a mixed pattern at different *** from antioxidant,anti-aging activities,amino acids profile and bioactive compounds such as gallic acid,catechin,trans-zeatin,and dihydrozeatin were measured to decrease with the coconuts’***,the amount of kinetin,kinetin riboside and trans-zeatin riboside increased with the maturation of the ***,CW from young MYD showed the highest antioxidant and anti-aging activities and possessed diverse bioactive compounds that could serve as novel sources of natural functional ingredients targeted for skin *** addition,the sensory evaluation showed that the taste of young and mature CW is acceptable for consumption with the young PDN,young MYD and mature MYD displaying the highest *** the best of our knowledge,the present work reported the first attempt to elucidate the inhibitory activities of CW towards elastase and collagenase enzymes.

关键词： Antioxidant Bioactive compounds Anti-elastase Anti-collagenase Coconut water

Numerical Solution for Neutral Delay Differential Equation of Constant or Proportional Type using Hybrid Block Method

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Advances in Applied Mathematics and Mechanics 2022年第5期14卷 1138-1160页

作者： Nur Inshirah Naqiah ismail Zanariah abdul Majid Norazak Senu Institute for Mathematical Research Universiti Putra Malaysia43400 UPM SerdangSelangorMalaysia Department of Mathematics and Statistics Faculty of ScienceUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia

Neutral Delay Differential Equation(NDDE)is a differential problem that has regularly existed in numerous occurrences and has represented a significant role in dealing with real-life phenomena,especially on their application in biological and physiological processes.A fifth-order two-point hybrid implicit multistep block method(2PIH5)has been formulated in this research for the numerical solution of Neutral Delay Differential Equation(NDDE).A Taylor series interpolation polynomial has been implemented in the formulation of the proposed *** order,consistency,and zero-stability for 2PIH5 have been *** analyses of convergence and stability test have been performed and *** initial value problems for the first-order NDDE with constant or proportional delay have been solved using the proposed block *** numerical results for the proposed method have been presented to prove the adaptability and applicability of the proposed method in solving *** proposed method is proved to be comparable with the other existing *** is assumed to be reliable and efficient for solving the first-order NDDE with constant or proportional delay.

关键词： Constant delay hybrid method multistep block method neutral delay differential equation proportional delay

BIOMONITORING OF AMBIENT CONCENTRATIONS OF CADMIUM,COPPER,LEAD AND ZINC IN THE COASTAL WETLAND WATER BY USING GILLS OF THE GREEN-LIPPED MUSSEL PERNA VIRIDIS

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湿地科学 2006年第4期4卷 247-252页

作者： Chee Kong Yap Ahmad ismail abdul Rahim ismail Soon Guan Tan Department of Biology Faculty of Science University Putra Malaysia UPM 43400 Serdang Selangor Malaysia

The distribution and concentrations of Cd, Cu, Pb and Zn were determined in the gills and remaining soft tissues of Perna viridis collected from 12 geographical sites (10 from the west and 2 from the east coastal waters) of Peninsular Malaysia. All samples showed that the levels of Cd, Pb and Zn were generally higher in the gill than those in the remaining soft tissues. These results could be due to the fact that gills are the first organ of metal accumulation and larger surface area with mucus sheets in the organ. Since the mussel gill is a better accumulator of Cd, Pb and Zn of ambient seawater than remaining soft tissue, it is a potential indicator of ambient levels of dissolved metals in the ambient seawater. However, further validations based on laboratory conditions are needed.

关键词： gill heavy metals Perna viridis

A study of the impact of environmental loads that penetrate a passive skylight roofing system in Malaysian buildings

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Frontiers of Architectural Research 2014年第2期3卷 178-191页

作者： Karam M. Al-Obaidi Mazran ismail abdul Malek abdul Rahman School of Housing Building & Planning Universiti Sains Malaysia Penang 11800 Malaysia

A passive skylight system is a significant building design element that provides an ideal condition for interior spaces. However, the use of this system is limited to specific climatic regions because of its considerable effect on the indoor environment. Malaysia is a tropical country that has favorable natural benefits, such as solar geometry and natural light, which can brighten building interiors throughout the year. However, harnessing this benefit affects spaces, especially those in single-story buildings, because of excessive natural loads. This study reviews a concept to understand the passive behavior of solar radiation in the form of light and heat that falls on, interacts with, and is emitted from a skylight system in a single-story building. The study method is theoretically based on descriptive analysis to assess design requirements. The review shows that designs grounded on the physical aspects of climate （influenced variables）, materials （design variables）, and human comfort （affected variables） in one process （ESI） can develop the architectural way of thinking rather than estimate the condition based on a limited perspective. This assumption indicates that the adoption of this concept in the preliminary design stage will enable designers to balance the building environment effectively.

关键词： Skylight system Tropics Solar radiation Light Heat Malaysian builtenvironment

Passive cooling techniques through reflective and radiative roofs in tropical houses in Southeast Asia:A literature review

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Frontiers of Architectural Research 2014年第3期3卷 283-297页

作者： Karam M.Al-Obaidi Mazran ismail abdul Malek abdul Rahman School of Housing Building and PlanningUniversiti Sains Malaysia

Cooling is one of the major concerns in building tropical *** problem is exacerbated by the heat gain of the roof,which constitutes 70%of the total heat *** passive cooling technique is one of the innovative practices and technologies that provide buildings with comfortable conditions through natural *** and radiative processes are the methods used to decrease heat gain by facilitating the elimination of excess heat in a building's interior to maintain a comfortable *** that the potential of these techniques vary from region to region,their application in the tropics should be *** these approaches in detail allows us to rethink how to effectively adapt these techniques to overcome the build-up of heat in modern tropical houses in Southeast *** study reviews the physical characteristics of these approaches to guide architects and building *** indicate a great reduction in operational ***,the significant differences in the performance of colour and material properties should be considered,given that the selected approach strongly affects the required thermal conditions of a building.

关键词： Passive cooling Reflective roof Radiative roof Southeast Asia Tropical houses

A review of extreme condition effects on solder joint reliability:Understanding failure mechanisms

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Defence Technology（防务技术） 2024年第11期41卷 134-158页

作者： Norliza ismail Wan Yusmawati Wan Yusoff Azuraida Amat Nor Azlian abdul Manaf Nurazlin Ahmad Department of Physics Centre for Defence Foundation StudiesUniversiti Pertahanan Nasional MalaysiaKem Sungai BesiKuala Lumpur57000Malaysia Centre for Tropicalization(CENTROP) Defence Research InstituteUniversiti Pertahanan Nasional MalaysiaKem Sungai BesiKuala Lumpur57000Malaysia

Solder joint,crucial component in electronic systems,face significant challenges when exposed to extreme conditions during *** solder joint reliability involving microstructure and mechanical properties will be affected by extreme *** the behaviour of solder joints under extreme conditions is vital to determine the durability and reliability of solder *** review paper aims to comprehensively explore the underlying failure mechanism affecting solder joint reliability under extreme *** study covers an in-depth analysis of effect extreme temperature,mechanical stress,and radiation conditions towards solder *** of each condition to the microstructure including solder matrix and intermetallic compound layer,and mechanical properties such as fatigue,shear strength,creep,and hardness was thoroughly *** failure mechanisms were illustrated in graphical diagrams to ensure clarity and ***,the paper highlighted mitigation strategies that enhancing solder joint reliability under challenging operating *** findings offer valuable guidance for researchers,engineers,and practitioners involved in electronics,engineering,and related fields,fostering advancements in solder joint reliability and performance.

关键词： Solder joint Extreme condition Failure mechanism Defence and military Reliability

Investigation on LaF_3/porous silicon system for photonic application

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Chinese Optics Letters 2010年第3期8卷 306-308页

作者： halima Khatun Sinthia Shabnam Mou abdul Al Mortuza Abu Bakar Md.ismail Department of Applied Physics and Electronic EngineeringRajshahi University School of Electrical and Electronic EngineeringIndependent University

We present the investigation on LaF3/porous silicon （PS） system that has properties of both the materials to be applied in photonics. Epilayers of LaF3 are grown on PS under different anodization conditions using electron-beam evaporation （EBE）. The characteristics of the LaF3/PS system are analyzed by X-ray diffraction （XRD）, scanning electron microscope （SEM）, energy dispersive X-ray spectroscopy （EDX）, and photoluminescence （PL）. XRD confirms the polycrystalline nature of the LaFz film. Nearly stoichiometric growth of LaF3 on PS is established by EDX. Such a thin LaF3 layer grown on PS leads to a good enhancement of PL yield of PS. But with the increasing thickness of LaF3 layer, PL intensity of PS is found to decrease along with a small blue-shift.

关键词： Energy dispersive spectroscopy Scanning electron microscopy X ray spectroscopy

Autonomous Unmanned Aerial Vehicles Based Decision Support System for Weed Management

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Computers, Materials & Continua 2022年第10期73卷 899-915页

作者： Ashit Kumar Dutta Yasser Albagory abdul Rahaman Wahab Sait ismail Mohamed Keshta Department of Computer Science and Information Systems College of Applied SciencesAlMaarefa UniversityAd DiriyahRiyadh13713Kingdom of Saudi Arabia Department of Computer Engineering College of Computers and Information TechnologyTaif UniversityTaif21944Kingdom of Saudi Arabia Department of Archives and Communication King Faisal UniversityAl AhsaHofuf31982Kingdom of Saudi Arabia

Recently,autonomous systems become a hot research topic among industrialists and academicians due to their applicability in different domains such as healthcare,agriculture,industrial automation,*** the interesting applications of autonomous systems,their applicability in agricultural sector becomes *** unmanned aerial vehicles(UAVs)can be used for suitable site-specific weed management(SSWM)to improve crop *** spite of substantial advancements in UAV based data collection systems,automated weed detection still remains a tedious task owing to the high resemblance of weeds to the *** recently developed deep learning(DL)models have exhibited effective performance in several data classification *** this aspect,this paper focuses on the design of autonomous UAVs with decision support system for weed management(AUAV-DSSWM)*** proposed AUAV-DSSWM technique intends to identify the weeds by the use of UAV images acquired from the target ***,the AUAV-DSSWM technique primarily performs image acquisition and image pre-processing ***,the Adam optimizer with You Only Look Once Object Detector-(YOLOv3)model is applied for the detection of *** the effective classification of weeds and crops,the poor and rich optimization(PRO)algorithm with softmax layer is *** design of Adam optimizer and PRO algorithm for the parameter tuning process results in enhanced weed detection performance.A wide range of simulations take place on UAV images and the experimental results exhibit the promising performance of the AUAV-DSSWM technique over the other recent techniques with the accy of 99.23%.

关键词： Autonomous systems object detection precision agriculture unmanned aerial vehicles deep learning parameter tuning