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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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Flapping wing micro-aerial-vehicle： Kinematics, membranes, and flapping mechanisms of ornithopter and insect flight

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Chinese Journal of Aeronautics 2016年第5期29卷 1159-1177页

作者： Mohd Firdaus bin Abas Azmin Shakrine bin Mohd Rafie Hamid bin Yusoff Kamarul arifin bin ahmad Department of Aerospace Engineering Faculty of Engineering Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia Faculty of Mechanical Engineering Universiti Teknologi MARA Pulau Pinang 13500 Permatang Pauh Pulau Pinang Malaysia

The application of biomimetics in the development of unmanned-aerial-vehicles （UAV） has advanced to an exceptionally small scale of nano-aerial-vehicles （NAV）, which has surpassed its immediate predecessor of micro-aerial-vehicles （MAV）, leaving a vast range of development possi- bilities that MAVs have to offer. Because of the prompt advancement into the NAV research devel- opment, the true potential and challenges presented by MAV development were never solved, understood, and truly uncovered, especially under the influence of transition and low Reynolds number flow characteristics. This paper reviews a part of previous MAV research developments which are deemed important of notification; kinematics, membranes, and flapping mechanisms ranges from small birds to big insects, which resides within the transition and low Reynolds number regimes. This paper also reviews the possibility of applying a piezoelectric transmission used to pro- duce NAV flapping wing motion and mounted on a MAV, replacing the conventional motorized flapping wing transmission. Findings suggest that limited work has been done for MAVs matching these criteria. The preferred research approach has seen bias towards numerical analysis as compared to experimental analysis.

关键词： Flapping wing kinematics Insect Membrane wing Micro-air-vehicle Ornithopter

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Influence of postural changes on haemodynamics in internal carotid artery bifurcation aneurysm using numerical methods

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Visual Computing for Industry,Biomedicine,and Art 2022年第1期5卷 128-143页

作者： Raghuvir Pai Ballambat Mohammad Zuber Shah Mohammed Abdul Khader Anurag Ayachit Kamarul arifin bin ahmad Rajanikanth ao Vedula Sevagur Ganesh Kamath Ibrahim Lutfi Shuaib Department of Mechanical and Industrial Engineering Manipal Institute of TechnologyManipal Academy of Higher EducationManipal 576104India Department of Aeronautical and Automobile Engineering Manipal Institute of TechnologyManipal Academy of Higher EducationManipal 576104India Department of Radiology and Imaging Kasturba Medical CollegeManipal Academy of Higher EducationManipal 576104India Department of Aerospace Engineering Faculty of EngineeringUniversitist Putra Malaysia43499 Kuala LumpurMalaysia Department of Cardio-Vascular and Thoracic Surgery Kasturba Medical CollegeManipal Academy of Higher EducationManipal 576104India Advanced Medical and Dental Institute Universiti Sains Malaysia13200 George TownMalaysia

Cerebral intracranial aneurysms are serious problems that can lead to stroke,coma,and even *** effect of blood flow on cerebral aneurysms and their relationship with rupture are *** addition,postural changes and their relevance to haemodynamics of blood flow are difficult to measure in vivo using clinical imaging *** simulations investigating the detailed haemodynamics in cerebral aneurysms have been developed in recent times not only to understand the progression and rupture but also for clinical evaluation and *** the present study,the haemodynamics of a patient-specific case of a large aneurysm on the left side internal carotid bifurcation(LICA)and no aneurysm on the right side internal carotid bifurcation(RICA)was *** simulation of these patient-specific models using fluid–structure interaction provides a valuable comparison of flow behavior between normal and aneurysm *** influences of postural changes were investigated during standing,sleeping,and head-down(HD)*** changes in flow were observed during the HD position and quit high arterial blood pressure in the internal carotid artery(ICA)aneurysm model was established when compared to the normal ICA *** velocity increased abruptly during the HD position by more than four times(LICA and RICA)and wall shear stress by four times(LICA)to ten times(RICA).The complex spiral flow and higher pressures prevailing within the dome increase the risk of aneurysm rupture.

关键词： Carotid aneurysm ANSYS fluid-structure interaction Altered gravity Haemodynamics

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