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On the role of optimization algorithms in ownership-preserving data mining

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Frontiers of Information Technology & Electronic Engineering 2018年第2期19卷 151-164页

作者： Muhammad kamran Ehsan Ullah MUNIR Department of Computer Science COMSATS Institute of Information Technology

Knowledge extraction from sensitive data often needs collaborative work. Statistical databases are generated from such data and shared among various stakeholders. In this context, the ownership protection of shared data becomes important. Watermarking is emerging to be a very effective tool for imposing ownership rights on various digital data formats. Watermarking of such datasets may bring distortions in the data. Consequently, the extracted knowledge may be inaccurate. These distortions are controlled by the usability constraints, which in turn limit the available bandwidth for watermarking. Large bandwidth ensures robustness; however, it may degrade the quality of the data. Such a situation can be resolved by optimizing the available bandwidth subject to the usability constraints. Optimization techniques, particularly bioinspired techniques, have become a preferred choice for solving such issues during the past few years. In this paper, we investigate the usability of various optimization schemes for identifying the maximum available bandwidth to achieve two objectives：（1） preserving the knowledge stored in the data;（2） maximizing the available bandwidth subject to the usability constraints to achieve maximum robustness. The first objective is achieved with a usability constraint model, which ensures that the knowledge is not compromised as a result of watermark embedding. The second objective is achieved by finding the maximum bandwidth subject to the usability constraints specified in the first objective. The performance of optimization schemes is evaluated using different metrics.

关键词： Information security Optimization Digital fights Watermarking

Automatic seizure detection with different time delays using SDFT and time-domain feature extraction

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The Journal of Biomedical Research 2022年第1期36卷 58-67页

作者： Amal S.Abdulhussien Ahmad T.AbdulSaddaa kamran Iqbal Communication Technical Engineering College Al-Furat Al-Awsat Technical UniversityAl-Najaf 54001Iraq Department of System Engineering University of Arkansas at Little RockLittle RockAR 72204USA.

Automatic seizure detection is important for fast detection of the seizure because the way that the expert denotes and searches for seizure in the long signal takes time. The most common way to detect seizures automatically is to use an electroencephalogram(EEG). Many studies have used feature extraction that needs time for calculation. In this study, sliding discrete Fourier transform(SDFT) was applied for conversion to a frequency domain without using a window, which was compared with using window for feature selection. SDFT was calculated for each time series sample directly without any delay by using a simple infinite impulse response(IIR)structure. The EEG database of Bonn University was used to test the proposed method, and two cases were defined to examine a two-classifier feedforward neural network and an adaptive network-based fuzzy inference system. Results revealed that the maximum accuracies were 93% without delay and 99.8% with a one-second delay. This delay accrued because the average was taken for the results with a one-second window.

关键词： EEG seizure detection machine learning sliding discrete Fourier transform

A comparative study of optimization algorithms for wavefront shaping

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Journal of Innovative Optical Health Sciences 2019年第4期12卷 74-82页

作者： Zahra Fayyaz Nafiseh Mohammadian M.Reza Rahimi Tabar Rayyan Manwar kamran(Mohammad)Avanaki Department of Physics Sharif University of Technology Tehran 11365-9161 Iran Biomedical Engineering Department Wayne State University DetroitMI 48201USA Department of Dermatology Wayne State University School of Medicine DetroitMI 48202USA Barbara Ann Karmanos Cancer Institute Detroit MI 48202USA

By manipulating the phase map of a wavefront of light using a spatial light modulator,the scattered light can be sharply focused on a specific *** iterative optimization algo-rithrns for obtaining the optimumn phase map have been ***,there has not been a comparative study on the performance of these *** this paper,six optimization algorithms for wavefront shaping inchuding continuous sequential,partitioning algorithm,transmission matrix estimation method,particle swarm optimization,genetic algorithm(GA),and simulated annealing(SA)are discussed and compared based on their efficiency when introduced with various measurement noise levels.

关键词： Wave front shaping algorithms optimization turbid media wavefront shaping

Super-exchange effect induced by early 3d metal doping on NiFe_(2)O_(4)(001)surface for oxygen evolution reaction

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Journal of Energy Chemistry 2023年第3期78卷 21-29,I0002页

作者： Shuhao Wang Xinyan Liu Xiang Chen kamran Dastafkan Zhong-Heng Fu Xin Tan Qiang Zhang Chuan Zhao School of Chemistry The University of New South WalesSydneyNSW 2052Australia Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina Integrated Materials Design Laboratory Department of Applied MathematicsResearch School of PhysicsThe Australian National UniversityCanberraACT 2601Australia

Understanding the intrinsic activity of oxygen evolution reaction(OER) is crucial for catalyst *** date,different metal-doping strategies have been developed to achieve this,but the involving mechanisms remain ***,the electronic structure of the transition metal-doped NiFe_(2)O_(4)(001) surface is scrutinized for OER intrinsic activity using density functional theory *** 3d-orbital filling metals(Ti,V,Cr,Mn,and Co) are introduced as dopants onto A-and B-layers of the NiFe_(2)O_(4)(001) surface,and variation of oxidation states over Fe sites is observed on *** the magnetic moment and charge transfer of surface cation sites reveals that the variation of Fe oxidation states originates from the super-exchange effect and is influenced by the t2g-electron configuration of 3d metal *** trend governs the generation of highly-active Fe3+sites on the B-layer,the adsorption strength of OER intermediates,i.e.,*O and*OH,and therefore the intrinsic *** finding of super-exchange mechanism induced by 3d early metal doping offers insights into electronic structure tailoring strategies for improving the intrinsic activity of OER electrocatalysts.

关键词： Oxygen evolution reaction NiFe spinel Oxidation states Super-exchange mechanism Density functional theory

A numerical simulation case study of the coastal currents and upwelling in the western Persian Gulf

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Journal of Ocean Engineering and Science 2020年第4期5卷 323-332页

作者： Hesameddin Mehrfar Masoud Torabi Azad kamran Lari Abbas-Ali Ali-Akbari Bidokhti Department of Natural Resources and Environment Islamic Azad UniversityScience and Research BranchTehranIran Department of Marine Science and Technology Islamic Azad UniversityNorth Tehran BranchTehranIran Institute of Geophysics University of TehranTehranIran

The present study employed COHERENS model as a three-dimensional hydrodynamic model to address the coastal currents in the western Persian Gulf with a horizontal resolution of 2-minutes of latitude and *** obtained results suggested that Iranian northwestward coastal currents developed from January to April and experienced their maximum intensity from June to August when the rate of the surface inflow current increases through the Strait of Hormuz and the stability of the seasonal thermocline becomes gradually *** simulation results reflected that expansions of the thermocline area began by the arrival of the warm *** such circumstances,some stronger coastal currents were generated in *** strong coastal surface current in the vicinity of the western part of Iranian coasts flew southeastward,while the reverse current flew with a northwestern direction in the *** obtained results suggested that a consequence of the influence of salinity flux,especially on the Iranian coasts,the speed of currents *** findings of this study showed that more kinetic energy was accumulated along Iranian ***,the current vectors on Iranian coasts were greater than those on Arabian coasts,which in turn resulted in the creation of the upwelling currents along western Iranian coasts.

关键词： Coastal Currents COHERENS Model Numerical Simulation Persian Gulf(PG) Upwelling

Acute cytomegalovirus infection in liver transplant recipients:An independent risk for venous thromboembolism

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World Journal of Hepatology 2013年第12期5卷 692-695页

作者： Raja GR Edula kamran Qureshi Hicham Khallafi Department of Medicine Division of Gastroen-terology and HepatologyRutgers New Jersey School of Medi-cineNewark Department of Hepatology Florida Hospital Transplant Center

Acute cytomegalovirus(CMV) infection is a commonly encountered complication in the post liver transplant setting. We present a case of a 71-year-old male with acute CMV infection, initially presenting with a gastro- intestinal bleed due to acute CMV gastritis and later on complicated by acute venous thromboembolism occur- ring as an unprovoked event in the post liver transplant period. Traditional risk factors for venous thromboem- bolism have been well described in the medical litera- ture. Sporadic cases of thromboembolism due to CMV infection in the immune compromised patients have been described, especially in the post kidney transplant patients. Liver transplant recipients are equally prone to CMV infection particularly in the first year after suc- cessful transplantation. Venous thromboembolism in this special population is particularly challenging due to the fact that these patients may have persistent throm- bocytopenia and anticoagulation may be a challenge for the treating physician. Since liver transplantation is severely and universally limited by the availability of donor organs, we feel that this case report will provide valuable knowledge in the day to day management of these patients, whose clinical needs are complex and require a multidisciplinary approach in their care and management. Evidence and pathophysiology link- ing both the conditions is presented along with a brief discussion on the management, common scenarios en- countered and potential impact in this special group of patients.

关键词： Cytomegalovirus Venous thromboembo-lism Orthotopic liver transplantation Thrombocytope-nia Hypersplenism

Spatial Correlation Module for Classification of Multi-Label Ocular Diseases Using Color Fundus Images

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Computers, Materials & Continua 2023年第7期76卷 133-150页

作者： Ali Haider Khan Hassaan Malik Wajeeha Khalil Sayyid kamran Hussain Tayyaba Anees Muzammil Hussain Department of Software Engineering Faculty of Computer SciencesLahore Garrison UniversityLahorePakistan Department of Computer Science School of Systems and TechnologyUniversity of Management and TechnologyLahore54000Pakistan Department of Computer Science&Information Technology University of Engineering and Technology(UET)PeshawarPakistan Department of Computer Science TIMES InstituteMultan60000Pakistan Department of Software Engineering School of Systems and TechnologyUniversity of Management and TechnologyLahore54000Pakistan

To prevent irreversible damage to one’s eyesight,ocular diseases(ODs)need to be recognized and treated *** fundus imaging(CFI)is a screening technology that is both effective and *** to CFIs,the early stages of the disease are characterized by a paucity of observable symptoms,which necessitates the prompt creation of automated and robust diagnostic *** traditional research focuses on image-level diagnostics that attend to the left and right eyes in isolation without making use of pertinent correlation data between the two sets of *** addition,they usually only target one or a few different kinds of eye diseases at the same *** this study,we design a patient-level multi-label OD(PLML_ODs)classification model that is based on a spatial correlation network(SCNet).This model takes into consideration the relevance of patient-level diagnosis combining bilateral eyes and multi-label ODs ***_ODs is made up of three parts:a backbone convolutional neural network(CNN)for feature extraction i.e.,DenseNet-169,a SCNet for feature correlation,and a classifier for the development of classification *** DenseNet-169 is responsible for retrieving two separate sets of attributes,one from each of the left and right *** then,the SCNet will record the correlations between the two feature sets on a pixel-by-pixel *** the attributes have been analyzed,they are integrated to provide a representation at the patient *** the whole process of ODs categorization,the patient-level representation will be *** efficacy of the PLML_ODs is examined using a soft margin loss on a dataset that is readily accessible to the public,and the results reveal that the classification performance is significantly improved when compared to several baseline approaches.

关键词： Ocular disease multi-label spatial correlation CNN eye disease

Entropies of the Y-Junction Type Nanostructures

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Computer Modeling in Engineering & Sciences 2023年第6期135卷 2665-2679页

作者： Ricai Luo Aisha Javed Muhammad Azeem Muhammad kamran Jamil Hassan Raza Muhammad Yasir Ilyas School of Mathematics and Physics Hechi UniversityYizhou456300China Abdus Salam School of Mathematical Sciences Government College UniversityLahore54000Pakistan Department of Mathematics Riphah Institute of Computing and Applied SciencesRiphah International UniversityLahore54000Pakistan School of Mathematical Sciences College of Science and TechnologyWenzhou-Kean UniversityWenzhou325060China Department of Physics COMSATS University IslamabadLahore54000Pakistan

Recent research on nanostructures has demonstrated their importance and application in a variety of *** are used directly or indirectly in drug delivery systems,medicine and pharmaceuticals,biological sensors,photodetectors,transistors,optical and electronic devices,and so *** discovery of carbon nanotubes with Y-shaped junctions is motivated by the development of future advanced electronic *** of their interactionwithY-junctions,electronic switches,amplifiers,and three-terminal transistors are of particular *** is a concept that determines the uncertainty of a system or *** concepts are also used in biology,chemistry,and applied *** on the requirements,entropy in the form of a graph can be classified into several *** 1955,graph-based entropy was *** of the types of entropy is edgeweighted *** examined the abstract form of Y-shaped junctions in this *** edge-weight-based entropy formulas for the generic view of Y-shaped junctions were created,and some edge-weighted and topological index-based concepts for Y-shaped junctions were discussed in the present paper.

关键词： Y-shaped junctions three-terminal junctions nanostuctures entropy carbon nanotube

Association of H pylori cagA and vacA genotypes and IL-8 gene polymorphisms with clinical outcome of infection in Iranian patients with gastrointestinal diseases

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World Journal of Gastroenterology 2006年第32期12卷 5205-5210页

作者： Eskandar Kamali-Sarvestani Abdulah Bazargani Malihe Masoudian kamran Lankarani Ali-Reza Taghavi Mehdi Saberifiroozi Department of Immunology and Autoimmune Diseases Research Center Shiraz Medical School Shiraz University of Medical SciencesShirazIran Department of Bacteriology and virology Shiraz Medical School Shiraz University of Medical SciencesShirazIran Department of cellular and molecular sciences Khatam University TehranIran Gastrointestinal and Hepatology Research center Shiraz Medical School Shiraz University of Medical SciencesShirazIran Department of Internal medicine Shiraz Medical School Shiraz University of Medical SciencesShirazIran

AIM： To find out if a functional promoter polymorphism in the IL-8 gene along with cagA status and polymorphisms in vacA gene influence the type of diseases in Iranian patients infected by Hpylori. METHODS： IL-8 -251 A/T polymorphism was genotyped by oligonucleotide allele specific PCR （ASO-PCR） in a sample of 233 patients with Hpylori infection undergoing upper gastrointestinal endoscopy. The presence of cagA gene and polymorphisms in vacA gene was also determined by PCR. Association of these genetic polymorphisms with the development of gastritis, peptic ulcers as well as gastric cancer was tested. RESULTS： When the patients with different clinical manifestations were compared according to the presence of cagA gene or various vacA genotypes, only the vacA genotypes were significantly different among gastritis, peptic ulcer and gastric cancer patients （χ^2= 17.8; P=0.001）. Furthermore, there was a significant difference in the frequency of IL-8 -251 A/T genotypes between patients with gastric cancer and benign diseases （χ^2=10.47;P=0.005） CONCLUSION： The IL-8 -251 A/T polymorphism and the polymorphisms in H pylor/ vacA gene are involved in limiting the infection outcome to gastritis and peptic ulcer or in favoring cancer onset in Iranian patients.

关键词： Interleukin 8 Hpylori Gastric cancer Peptic ulcer Polymorphism