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Deep Image Restoration Model: A Defense Method Against Adversarial Attacks

Computers, Materials & Continua 2022年第5期71卷 2209-2224页

作者： Kazim Ali Adnan N.Quershi Ahmad Alauddin Bin Arifin Muhammad Shahid Bhatti Abid Sohail Rohail Hassan Department of Information Technology University of Central PunjabLahore54000Pakistan Department of Communication Technology and Network Faculty of Computer Science and Information TechnologyUniversity Putra MalaysiaSalengor43400Malaysia Department of Computer Science Comsats University IslamabadLahore Campus54000Pakistan Othman Yeop Abdullah Graduate School of Business University Utara MalaysiaKuala Lumpur50300Malaysia

These days,deep learning and computer vision are much-growing fields in this modern world of information *** learning algorithms and computer vision have achieved great success in different applications like image classification,speech recognition,self-driving vehicles,disease diagnostics,and many *** success in various applications,it is found that these learning algorithms face severe threats due to adversarial *** examples are inputs like images in the computer vision field,which are intentionally slightly changed or *** changes are humanly *** are misclassified by a model with high probability and severely affects the performance or *** this scenario,we present a deep image restoration model that restores adversarial examples so that the target model is classified correctly *** proved that our defense method against adversarial attacks based on a deep image restoration model is simple and state-of-the-art by providing strong experimental results *** have used MNIST and CIFAR10 datasets for experiments and analysis of our defense *** the end,we have compared our method to other state-ofthe-art defense methods and proved that our results are better than other rival methods.

关键词： Computer vision deep learning convolutional neural networks adversarial examples adversarial attacks adversarial defenses

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Recent applications of carbon-based composites in defence industry: A review

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Defence Technology（防务技术） 2022年第8期18卷 1281-1300页

作者： M.M.Harussani S.M.Sapuan Gohar Nadeem Tahrim Rafin W.Kirubaanand Advanced Engineering Materials and Composites Research Centre(AEMC) Department of Mechanical and Manufacturing EngineeringUniversiti Putra Malaysia43400UPM SerdangSelangorMalaysia Laboratory of Biocomposite Technology Institute of Tropical Forestry and Forest Products(INTROP)Universiti Putra Malaysia43400UPM SerdangSelangorMalaysia Department of Civil Engineering Universiti Putra Malaysia43400UPM SerdangSelangorMalaysia Department of Civil Engineering Balochistan University of Engineering&TechnologyKhuzdar89100BalochistanPakistan

Carbon-based composites, including carbon reinforced composites and carbon-matrix composites, in defence technologies have raised a lot of attention due to its significant physical capabilities, superior thermal and mechanical stability, and its eco-friendly nature. Carbon-based composite which incorporating with various carbonaceous materials such as coke, char, black carbon, activated carbon, carbon fibre and other carbon nanomaterials (carbon nanotubes, carbon nanofibres, graphene and graphite) are the greatest viable option for the development of advanced defence technologies. In this review article the characteristics of carbon-based materials and its composites are discussed for their distinct application in defence sectors;aeronautics, maritime, automotive, electronics, energy storage, electromagnetic interference (EMI) shielding and structures. The origin of carbonaceous materials and its production techniques were discussed. Carbon-based composites have a promising future in defence technology, particularly in chemical sensors, drug delivery agents, radar technologies, and nanocomposites due to their low cost, easy availability, flexibility in design and processing.

关键词： Carbon materials Char Carbon CNT Graphene Composite Defence technology

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Modification of Oil Palm Empty Fruit Bunch and Sugarcane Bagasse Biomass as Potential Reinforcement for Composites Panel and Thermal Insulation Materials

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Journal of Bionic Engineering 2019年第1期16卷 175-188页

作者： Nor Azlina Ramlee Mohammad Jawaid Edi Syams Zainudin Shaikh Abdul Karim Yamani Department of Biocomposite Laboratory Institute of Tropical Forestry and Forest Products (INTROP)Universiti Putra Malaysia 43400 SerdangSelangorMalaysia Department of Mechanical and Manufacturing Engineering Faculty of EngineeringUniversiti Putra Malaysia 43400 SerdangSelangorMalaysia Faculty of Applied Science Wood Industry universiti Teknologi MARA Campus of Jengka 26400 Bandar Tun Abdul Razak JengkaPahangMalaysia

This paper focuses on the study of the effect of modification of Oil Palm Empty Fruit Bunch(OPEFB)and sugarcane bagasse(SCB)biomass as potential reinforcement for composites panel and thermal *** fibres were treated with three types of chemicals:2%silane,4%H2O2 and 4%H2O2-2%silane for 3 *** influence of modified fibres content in composites was examined by structural changes using image analyser,Fourier transform infrared(FTIR),Scanning Electron Microscopy(SEM),tensile,interracial shear strength(IFSS)and thermal *** diameter of both fibres was reduced after treatment and showed decreasing of lignin and hemi-cellulose in *** strength has been increased by 2%silane treatment for both fibres and 4%H2O2 treatment displays higher result for *** properties of treated SCB fibre with silane display higher residual content and better thermal *** charac-terization showed that 2%silane treatment removed silica bodies of OPEFB fibre while 4%H2O2 treatment uniformly filled porosity of SCB ***,results revealed that treated OPEFB fibre is enough to improve compatibility and mechanical properties,while treated SCB fibre was effective in thermal stability for fabrication of composite materials.

关键词： oil palm empty fruit bunch sugarcane bagasse fibre treatment tensile properties thermal properties interracial shear strength

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Conceptual Design of Glass/Renewable Natural Fibre-Reinforced Polymer Hybrid Composite Motorcycle Side Cover

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Journal of Renewable Materials 2021年第11期9卷 1973-1989页

作者： M.A.F.A.Wahab S.M.Sapuan M.M.Harussani M.Y.M.Zuhri A.A.Saleh Department of Mechanical and Manufacturing Engineering Universiti Putra MalaysiaSerdang43400Malaysia Laboratory of Biocomposite Technology Institute of Tropical Forestry and Forest Products(INTROP)Universiti Putra MalaysiaSerdang43400Malaysia Department of Mechanical andManufacturing Engineering Faculty of EngineeringUniversiti Malaysia SarawakKota Samarahan94300Malaysia

This paper presents the development process relating to the conceptual design of glass/renewable natural fibrereinforced polymer hybrid composite motorcycle side *** side cover is a component frequently made from plastic or steel that functions on covering the motorcycle parts,components and systems such as frame,battery,electrical systems and mechanical *** Analysis Systems Techniques(FAST)is used to identify the functions of motorcycle side *** right-side cover of motorcycle model SYM E-Bonus 110 has been physically studied to identify the competitive benchmarking *** functions and competitive benchmarking criteria are then compiled and integrated with the environmental requirements to identify the Product Design Specifications(PDS).The coir fibre has been selected from six identified dominant renewable natural fibre used for automotive component through integration of Ranking Method and Quality Based Selection(QBS).Then the polypropylene matrix is selected after shortlisting the existing thermoplastic that is used with coir fibre and has high suitability for injection moulding *** polypropylene matrix is then evaluated using Weighted Evaluation Matrix(WEM)by comparing to benchmark material which is Acrylonitrile Butadiene Styrene(ABS).After that,the conceptual design development of glass/renewable coir fibre-reinforced polypropylene motorcycle side cover is carried out using an integrated Theory of Inventive Problem Solving(TRIZ)and Morphological Chart,followed by final conceptual design selection using integration of Pugh Scoring Method and *** conceptual design development intended on improving the biodegradability to reduce pollution to the ***,the usage of glass/coir fibre-reinforced polypropylene hybrid composite may increase the weight due to higher *** innovative design concepts have been developed and the selected final concept design has the most minimum number of ribs an

关键词： Renewable natural fibre coir fibre hybrid composite conceptual design PDS TRIZ morphological chart QBS FAST diagram WEM natural fibre selection pugh scoring method

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Numerical Control Measures of Stochastic Malaria Epidemic Model

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Computers, Materials & Continua 2020年第10期65卷 33-51页

作者： Muhammad Rafiq Ali Ahmadian Ali Raza Dumitru Baleanu Muhammad Sarwar Ahsan Mohammad Hasan Abdul Sathar Faculty of Engineering University of Central PunjabLahorePakistan Institute of Visual Informatics National University of MalaysiaBangi43600 UKMMalaysia Faculty of Computing National College of Business Administration and EconomicsLahorePakistan Department of Mathematics Cankaya UniversityAnkara06530Turkey Centre of Foundation Studies for Agricultural Science Universiti Putra MalaysiaSerdang43400Malaysia

Nonlinear stochastic modeling has significant role in the all discipline of *** essential control measuring features of modeling are positivity,boundedness and dynamical ***,the existing stochastic methods in literature do not restore aforesaid control measuring features,particularly for the stochastic ***,these gaps should be occupied up in literature,by constructing the control measuring features numerical *** shall present a numerical control measures for stochastic malaria model in this *** results of the stochastic model are discussed in contrast of its equivalent deterministic *** the basic reproduction number is less than one,then the disease will be in control while its value greater than one shows the perseverance of disease in the *** standard numerical procedures are conditionally *** propose method is competitive and preserve all the control measuring features *** has also been concluded that the prevalence of malaria in the human population may be controlled by reducing the contact rate between mosquitoes and *** awareness programs run by world health organization in developing countries may overcome the spread of malaria disease.

关键词： Malaria disease model stochastic modelling stochastic methods convergence

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Optimization of process parameters for the bioconversion of activated sludge by Penicillium corylophilum, using response surface methodology

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Journal of Environmental Sciences 2007年第1期19卷 23-28页

作者： Sarkar Mannan Ahmadun Fakhru'l-Razi Md Zahangir Alam Department of Chemical and Environmental Engineering Faculty of Engineering University Putra Malaysia (UPM)43400 UPM SerdangSelangorD.E.Malaysia. Department of Biotechnology Engineering Faculty of Engineering International Islamic University Malaysia (IIUM)Jalan Gombak53100 Kuala LumpurMalaysia.

The optimization of process parameters for the bioconversion of activated sludge by Penicillium corylophilum was investigated using response surface methodology （RSM）. The three parameters namely temperature of 33℃, agitation of 150 r/min, and pH of 5 were chosen as center point from the previous study of fungal treatment. The experimental data on chemical oxygen demand （COD） removal （%） were fitted into a quadratic polynomial model using multiple regression analysis. The optimum process conditions were determined by analyzing response surface three-dimensional surface plot and contour plot and by solving the regression model equation with Design Expert software. Box-Behnken design technique under RSM was used to optimize their interactions, which showed that an incubation temperature of 32.5℃, agitation of 105 r/min, and pH of 5.5 were the best conditions. Under these conditions, the maximum predicted yield of COD removal was 98.43%. These optimum conditions were used to evaluate the trail experiment, and the maximum yield of COD removal was recorded as 98.5%.

关键词： optimization response surface methodology Penicillium activated sludge domestic wastewater sludge

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New coating formulation for the slow release of urea using a mixture of gypsum and dolomitic limestone

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Particuology 2015年第6期13卷 62-67页

作者： Farahnaz Eghbali Babadi Robiah Yunus Suraya Abdul Rashid Mohamad Amran Mohd Salleh Salmiaton Ali Institute of Advanced Technology Universiti Putra Malaysia Selangor 43400 Malaysia Departments of Chemical and Environmental Engineering Faculty of Engineering Universiti Putra Malaysia Selangor 43400 Malaysia

The use of urea and urea-based fertilizers has increased considerably over the past 15 years. They cur- rently account for approximately 51% of the world＇s agricultural nitrogen consumption. However, about 20-70% of the applied urea fertilizer is lost to the environment, causing serious pollution and increasing costs. These losses come from leaching, decomposition, and ammonium volatilization in the soil during handling and storage. Controlled release by coating can be used to increase urea fertilizer efficiency. We studied the use of gypsum, sulfur, and ground magnesium lime as cost-effective coating materials. All these coating materials contain nutrients required by plants. The effects of the coating composition and proportion of sealant on the rate of urea release and the crushing strength of the coated urea were investigated. We found that coated urea with the same proportion of gypsum-ground magnesium lime （GML） exhibited low urea release and high crushing strength. The performance was enhanced when using polyols as a sealant on the surface of the coated urea. A surface morphology analysis indicated a uniform and smooth surface on the coated film. The efficiency of the coated urea improved by 34.2% when using gypsum-GML （ 1：1 ratio） containing 1.1% oolvols.

关键词： Ground magnesium lime Crushing strength Rotary pan SealantPolyol

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Growth and Characterization of Pencil-Like ZnO Nanowires in the Presence of a Disturbance in Boundary Layer

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Acta Metallurgica Sinica(English Letters) 2016年第6期29卷 595-600页

作者： A.Kamalianfar Mahmoud Godarz Naseri Marzih Kamalianfar S.A.Halim K.P.Lim Department of Physics Faculty of Science Farhangian University Ministry of Education Fars Education Department of Physics Faculty of Science Malayer University Department of Physics Faculty of Science University Putra MalaysiaUPM

Pencil-like zinc oxide（ZnO） nanowire was synthesized on Si（111） substrate through a simple vapor phase method using a mixture of zinc oxide and graphite as the source material. The source inside a quartz tube created a Zn-rich vapor that facilitated the formation and growth of ZnO nanowires. Field emission scanning electron microscopic studies indicated that pencil-like ZnO nanowires had a size of the range from 50 to 150 nm in diameter and several microns in length. X-ray diffraction was used to investigate the crystal structure of ZnO nanowires. Raman scattering and photoluminescence were applied to characterize the optical properties of the pencils. The growth mechanism of the nanopencils was discussed based on the growth conditions.

关键词： Zinc oxide Nanowires Vapor-phase transport Pencil-like

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Material Selection of a Natural Fibre Reinforced Polymer Composites using an Analytical Approach

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Journal of Renewable Materials 2019年第11期7卷 1165-1179页

作者： M.Noryani S.M.Sapuan M.T.Mastura M.Y.M.Zuhri E.S.Zainudin Advanced Engineering Materials and Composites Research Centre Department of Mechanical and Manufacturing EngineeringUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia Laboratory of Biocomposite Technology Institute of Tropical Forestry and Forest Products(INTROP)Universiti Putra Malaysia43400 UPM SerdangSelangorMalaysia Faculty of Mechanical Engineering Universiti Teknikal Malaysia MelakaHang Tuah Jaya76100 Durian TunggalMelakaMalaysia Faculty of Mechanical and Manufacturing Engineering Technology Universiti Teknikal Malaysia MelakaHang Tuah Jaya76100 Durian TunggalMelakaMalaysia Centre of Advanced Research on Energy Universiti Teknikal Malaysia MelakaHang Tuah Jaya76100 Durian TunggalMelakaMalaysia

Material selection has become a critical part of design for engineers,due to availability of diverse choice of materials that have similar properties and meet the product design *** of statistical analysis alone makes it difficult to identify the ideal composition of the final *** integrated approach between statistical model and micromechanical model is *** this paper,resultant natural fibre and polymer matrix from previous study is used to estimate the mechanical properties such as density,Young’s modulus and tensile *** levels of fibre loading are used to compare the optimum natural fibre reinforced polymer composite(NFRPC).The result from this analytical approach revealed that kenaf/polystyrene(PS)with 40%fibre loading is the ideal composite in automotive component *** was found that the ideal composite score is 1.156 g/cm^(3),24.2 GPa and 413.4 MPa for density,Young’s modulus and tensile strength,respectively.A suggestion to increase the properties on Young’s modulus are also *** work proves that the statistical model is well incorporated with the analytical approach to choose the correct composite to use in automotive application.

关键词： Material selection natural fibre reinforced polymer composites rule of mixtures

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Copper oxide nanoparticles-loaded zeolite and its characteristics and antibacterial activities

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Journal of Materials Science & Technology 2017年第8期33卷 889-896页

作者： Abdullah A.Alswat Mansor Bin Ahmad Mohd Zobir Hussein Nor Azowa Ibrahim Tawfik A.Saleh Department of Chemistry Faculty of ScienceUniversiti Putra MalaysiaSelangor 43400Malaysia Department of Chemistry Sana'a UniversityYemen Department of Chemistry King Fahcl University of Petroleum&MineralsDhahran 31261Saudi Arabia

In the present work, a simple and green co-precipitation method was used to prepare copper oxide-zeolite nanocomposites（CuO-zeolite NCs）. The weight ratio（1, 3, 5, 8 and 10 wt%） of CuO nanoparticles（NPs）loaded into zeolite was investigated to obtain the optimum CuO distribution for antibacterial *** prepared CuO-zeolite NCs were characterized by ultraviolet-visible（UV–vis） spectroscopy, Fourier transform infrared（FT-IR） spectroscopy, powder X-ray diffraction（XRD）, and energy dispersive X-ray fluorescence spectrometry（EDXRF）. The transmission electron microscopy（TEM） and field emission scanning electron microscopy（FE-SEM） revealed a uniform surface morphology of the CuO-zeolite *** UV–vis spectrum of NCs showed absorption peaks between 230 and 280 nm for nano-CuO in the XRD patterns, and new peaks appeared between（36.56？–38.83？） related to the CuO. At weight ratio less than 10 wt%, the CuO nanoparticles loaded to the zeolite exhibited spherical shapes with average particle diameter of 6.5 nm measured by TEM and XRD. Antibacterial activities were tested against Gram-negative and Gram-positive bacteria. The obtained results showed that, CuO-zeolite NCs with 8 wt% CuO nanoparticles had the highest antibacterial activities against Bacillus Subtilis B29 and Salmonella Choleraesuis ATCC10708, which can be attributed to the good dispersion of CuO NPs on the zeolite surface.

关键词： Copper oxide-zeolite Nanocomposites Antibacterial

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