检索结果-南通市图书馆

International Journal of Minerals,Metallurgy and Materials 2023年第12期30卷 2375-2385页

作者： Yiqi Zhou sultan Mahmood Dirk Lars Engelberg Beijing Advanced Innovation Center for Materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China Metallurgy and Corrosion School of MaterialsThe University of ManchesterM139PLManchesterUK Materials Performance Centre The University of ManchesterM139PLManchesterUK

Bipolar electrochemistry is used to produce a linear potential gradient across a bipolar electrode(BPE),providing direct access to the anodic and cathodic reactions under a wide range of applied *** occurrence of pitting corrosion,crevice corrosion,and general corrosion on type 2205 duplex stainless steel(DSS 2205)BPE has been observed at room *** critical pit depth of 10-20μm with a55%-75% probability of pits developing into stable pits at potential from+0.9 to+1.2 V ***(open circuit potential)are *** pit nucleation sites are either within ferritic grains or at the interface between austenite and *** critical conditions for pitting and crevice corrosion are discussed with Epit(critical pitting potential)and Ecre(critical crevice potential)decreasing from 0.87 and 0.80 V *** after150 s of exposure to 0.84 and 0.76 V *** after 900 s of exposure,*** growth kinetics under different applied bipolar potentials and exposure times have been *** ferrite is shown to be more susceptible to general dissolution.

关键词： bipolar electrochemistry duplex stainless steel pitting corrosion pit growth factor crevice corrosion

DeepGan-Privacy Preserving of HealthCare System Using DL

在线全文

学校读者我要写书评

暂无评论

Intelligent Automation & Soft Computing 2023年第8期37卷 2199-2212页

作者： sultan Mesfer Aldossary Prince Sattam Bin Abdulaziz University Wadi Ad Dawaser11990Saudi Arabia

The challenge of encrypting sensitive information of a medical image in a healthcare system is still one that requires a high level of computing complexity,despite the ongoing development of *** looking through the previous research,it has become clear that the security issues still need to be looked into further because there is room for expansion in the research ***,neural networks have emerged as a cost-effective and effective optimization strategy in terms of providing security for *** revelation came about as a result of current ***,such an implementation is a technique that is expensive to compute and does not handle the huge variety of different assaults that may be made on *** primary objective of the system that has been described is to provide evidence of a complex framework in which deep neural networks have been applied to improve the efficiency of basic encryption *** research has led to the development and proposal of an enhanced version of methods that have previously been used to encrypt ***,the generative adversarial network(GAN),commonly known as GAN,will serve as the learning network that generates the private *** transformation domain,which reflects the one-of-a-kind fashion of the private key that is to be formed,is also meant to lead the learning network in the process of actually accomplishing the private key creation *** scheme may be utilized to train an excellent Deep Neural Networks(DNN)model while instantaneously maintaining the confidentiality of training medical *** was tested by the proposed approach DeepGAN on open-source medical datasets,and three sets of data:The Ultrasonic Brachial Plexus,the Montgomery County Chest X-ray,and the *** findings indicate that it is successful in maintaining both performance and privacy,and the findings of the assessment and the findings of the security investigation suggest that the de

关键词： Healthcare cryptography deep learning adversarial network privacy

Secured Framework for Assessment of Chronic Kidney Disease in Diabetic Patients

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Intelligent Automation & Soft Computing 2023年第6期36卷 3387-3404页

作者： sultan Mesfer Aldossary Dean of the College of Arts and Sciences Prince Sattam Bin Abdulaziz UniversityWadi Al-Dawasir11990Saudi Arabia

With the emergence of cloud technologies,the services of healthcare systems have ***,machine learning systems have become important tools for developing matured and decision-making computer *** cloud computing and machine learning technologies have contributed significantly to the success of healthcare ***,in some areas,these technologies are needed to provide and decide the next course of action for patients suffering from diabetic kidney disease(DKD)while ensuring privacy preservation of the medical *** address the cloud data privacy problem,we proposed a DKD prediction module in a framework using cloud computing services and a data control *** framework can provide improved and early treatment before end-stage renal *** prediction purposes,we implemented the following machine learning algorithms:support vector machine(SVM),random forest(RF),decision tree(DT),naïve Bayes(NB),deep learning(DL),and k nearest neighbor(KNN).These classification techniques combined with the cloud computing services significantly improved the decision making in the progress of DKD *** applied these classifiers to the UCI Machine Learning Repository for chronic kidney disease using various clinical features,which are categorized as single,combination of selected features,and all *** single clinical feature experiments,machine learning classifiers SVM,RF,and KNN outperformed the remaining classification techniques,whereas in combined clinical feature experiments,the maximum accuracy was achieved for the combination of DL and *** the feature experiments presented increased accuracy and increased F-measure metrics from SVM,DL,and RF.

关键词： Cloud computing diabetic kidney disease machine learning prediction system privacy preservation integrity of data secured data transmission homomorphic authentication

DL-Powered Anomaly Identification System for Enhanced IoT Data Security

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2023年第12期77卷 2857-2879页

作者： Manjur Kolhar sultan Mesfer Aldossary Department Computer Science Prince Sattam Bin Abdulaziz UniversityWadi Ad-Dawaser11990Saudi Arabia

In many commercial and public sectors,the Internet of Things(IoT)is deeply *** security threats aimed at compromising the security,reliability,or accessibility of data are a serious concern for the *** to the collection of data from several IoT devices,the IoT presents unique challenges for detecting anomalous *** is the responsibility of an Intrusion Detection System(IDS)to ensure the security of a network by reporting any suspicious *** identifying failed and successful attacks,IDS provides a more comprehensive security capability.A reliable and efficient anomaly detection system is essential for IoT-driven *** deep learning-based anomaly detection,this study proposes an IoT anomaly detection system capable of identifying relevant characteristics in a controlled *** factors are used by the classifier to improve its ability to identify fraudulent IoT *** efficient outlier detection,the author proposed a Convolutional Neural Network(CNN)with Long Short Term Memory(LSTM)based Attention Mechanism(ACNN-LSTM).As part of the ACNN-LSTM model,CNN units are deployed with an attention mechanism to avoid memory loss and gradient *** the N-BaIoT and IoT-23 datasets,the model is *** to the N-BaIoT dataset,the overall accuracy is 99%,and precision,recall,and F1-score are also *** addition,the IoT-23 dataset shows a commendable accuracy of 99%.In terms of accuracy and recall,it scored 0.99,while the F1-score was *** LSTM model with attention achieved an accuracy of 95%,while the CNN model achieved an accuracy of 88%.According to the loss graph,attention-based models had lower loss values,indicating that they were more effective at detecting *** both the N-BaIoT and IoT-23 datasets,the receiver operating characteristic and area under the curve(ROC-AUC)graphs demonstrated exceptional accuracy of 99%to 100%for the Attention-based CNN and LSTM *** indicates that t

关键词： CNN IoT IDS LSTM security threats

IoT-Fog Architectures in Smart City Applications:A Survey

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Communications 2021年第11期18卷 117-140页

作者： Shahid sultan Hajam Shabir Ahmad Sofi Department of Information Technology National Institute of TechnologyHazaratbal Srinagar 190006Jammu and KashmirIndia

Smart cities improve the quality of life of people by utilizing the benefits of Information and communication technology(ICT)and the Internet of things(IoT).The applications of the smart city often rely on the cloud for *** doubt cloud provides an ample amount of resources as a service but still it has limitations in terms of unreliable latency,mobility,and location awareness due to their multi-hop distance from the IoT *** computing avoids these limitations by providing services nearer to the *** this work we investigate the already proposed IoT-Fog based application specific smart city architectures and review them based on scalability,heterogeneity,mobility,energy conservation,latency,and ***,we discuss the applications and highlight the challenges that fog computing *** also present a case study of a smart city scenario with multiple applications of IoT.

关键词： fog computing edge computing mobile edge computing resource allocation,offloading software defined networks smart city smart grid

A Hybrid Multi-Hazard Susceptibility Assessment Model for a Basin in Elazig Province,Türkiye

在线全文

学校读者我要写书评

暂无评论

International Journal of Disaster Risk Science 2023年第2期14卷 326-341页

作者： Gizem Karakas sultan Kocaman Candan Gokceoglu Graduate School of Science and Engineering Hacettepe University06800BeytepeAnkaraTurkey Department of Geomatics Engineering Hacettepe University06800BeytepeAnkaraTurkey Department of Geological Engineering Hacettepe University06800BeytepeAnkaraTurkey

Preparation of accurate and up-to-date susceptibility maps at the regional scale is mandatory for disaster mitigation,site selection,and planning in areas prone to multiple natural *** this study,we proposed a novel multi-hazard susceptibility assessment approach that combines expert-based and supervised machine learning methods for landslide,flood,and earthquake hazard assessments for a basin in Elazig Province,Tü*** produce the landslide susceptibility map,an ensemble machine learning algorithm,random forest,was chosen because of its known performance in similar *** modified analytical hierarchical process method was used to produce the flood susceptibility map by using factor scores that were defined specifically for the area in the *** seismic hazard was assessed using ground motion parameters based on Arias intensity *** univariate maps were synthesized with a Mamdani fuzzy inference system using membership functions designated by *** results show that the random forest provided an overall accuracy of 92.3%for landslide susceptibility *** the study area,41.24%were found prone to multi-hazards(probability value>50%),but the southern parts of the study area are more *** proposed model is suitable for multi-hazard susceptibility assessment at a regional scale although expert intervention may be required for optimizing the algorithms.

关键词： Earthquakes Floods Fuzzy inference systems Landslides Multi-hazard susceptibility assessment Random forest Türkiye

Tuberculous esophagomediastinal fistula with concomitant mediastinal bronchial artery aneurysm-acute upper gastrointestinal bleeding: A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2019年第17期25卷 2144-2148页

作者： sultan R Alharbi Interventional Radiology Unit King Saud University Medical CityCollage of MedicineKing Saud University

BACKGROUND Esophagomediastinal fistula is a very rare complication of tuberculosis in otherwise healthy adults, and mediastinal bronchial artery aneurysm is even rarer. In this case report, we describe a rare case of tuberculosis complication that presented with acute upper gastrointestinal(GI) bleeding. It also highlights the benefits of chest computed tomography(CT) as an excellent adjunct diagnostic tool to endoscopy and bronchoscopy and the role of trans-arterial embolization as a minimal invasive therapy alternative to *** SUMMARY A 19-year-old medically free male patient presented with acute multiple episodes of hematemesis for 1 d. Upper GI endoscopy, bronchoscopy, and chest CT with IV contrast confirmed esophagomediastinal fistula with mediastinal bronchial artery aneurysm. After resuscitating patient with IV fluid and blood product transfusion, trans catheter embolization was performed for mediastinal bronchial artery *** We successfully treated a patient with acute upper GI bleeding due to tuberculous esophagomediastinal fistula and mediastinal bronchial artery aneurysm using transcatheter coil embolization.

关键词： Mediastinal bronchial artery aneurysm Esophagomediastinal fistula Upper gastrointestinal bleeding Mediastinal tuberculosis Case report

Rhythmic precipitate patterns and fractal structure

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2011年第1期27卷 119-124页

作者： Rabih F.sultan Department of Chemistry American University of Beirut

Liesegang patterns of parallel precipitate bands are obtained when solutions containing co-precipitate ions interdiffuse in a 1D gel *** sparingly soluble salt formed,displays a beautiful stratification of discs of precipitate perpendicular to the 1D tube *** Liesegang structures are analyzed from the viewpoint of their fractal *** Liesegang patterns are constructed in conformity with the well-known empirical laws such as the time,band spacing and band width *** dependence of the band spacing on the initial concentrations of diffusing（outer）and immobile（inner）electrolytes（A0 and B0,respectively）is taken to follow the Matalon-Packter *** mathematical fractal dimensions and box-count dimensions are *** fractal dimension is found to increase with increasing A0 and decreasing *** also analyze mosaic patterns with random distribution of crystallites,grown under different conditions than the classical Liesegang gel method,and report on their fractal ***,complex Liesegang patterns wherein the bands are grouped in multiplets are studied,and it is shown that the fractal nature increases with the multiplicity.

关键词： Liesegang · Periodic precipitation · Fractals · Fractal dimension · Mosaic patterns

Migration of existing software systems to mobile computing platforms:a systematic mapping study

在线全文

学校读者我要写书评

暂无评论

Frontiers of Computer Science 2021年第2期15卷 13-37页

作者： Ibrahim ALSEADOON Aakash AHMAD Adel ALKHALIL Khalid sultan College of Computer Science and Engineering University of Ha’ilHa’il2440Saudi Arabia College of Engineering and Applied Sciences American University of KuwaitSalmiya13034Kuwait

Mobile computing has fast emerged as a pervasive technology to replace the old computing paradigms with portable computation and context-aware *** software systems can be migrated(while preserving their data and logic)to mobile computing platforms that support portability,context-sensitivity,and enhanced *** recent years,some research and development efforts have focused on a systematic migration of existing software systems to mobile computing *** investigate the research state-of-the-art on the migration of existing software systems to mobile computing *** aim to analyze the progression and impacts of existing research,highlight challenges and solutions that reflect dimensions of emerging and futuristic *** followed evidence-based software engineering(EBSE)method to conduct a systematic mapping study(SMS)of the existing research that has progressed over more than a decade(25 studies published from 1996–2017).We have derived a taxonomical classification and a holistic mapping of the existing research to investigate its progress,impacts,and potential areas of futuristic research and *** SMS has identified three types of migration namely Static,Dynamic,and State-based Migration of existing software systems to mobile computing *** to mobile computing platforms enables existing software systems to achieve portability,context-sensitivity,and high ***,mobile systems may face some challenges such as resource poverty,data security,and *** emerging and futuristic research aims to support patterns and tool support to automate the migration *** results of this SMS can benefit researchers and practitioners-by highlighting challenges,solutions,and tools,etc.,-to conceptualize the state-of-the-art and futuristic trends that support migration of existing software to mobile computing.

关键词： evidence-based software engineering mapping study software evolution mobile computing

A stable flat universe with variable cosmological constant in f(R,T)gravity

在线全文

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2018年第10期18卷 65-74页

作者： Nasr Ahmed sultan Z.Alamri Astronomy Department National Research Institute of Astronomy and GeophysicsHelwanCairoEgypt Mathematics Department Faculty of ScienceTaibah UniversitySaudi Arabia

In this paper, a general FRW cosmological model has been constructed in f（R, T） gravity reconstruction with variable cosmological constant. A number of solutions to the field equations has been generated by utilizing a form for the Hubble parameter that leads to Berman＇s law of constant deceleration parameter q =m - 1. The possible decelerating and accelerating solutions have been investigated. For （q 〉 0） we get a stable fiat decelerating radiation-dominated universe at q = 1. For （q 〈 0） we get a stable accelerating solution describing a flat universe with positive energy density and negative cosmological constant. Nonconventional mechanisms that are expected to address the late-time acceleration with negative cosmological constant have been discussed.

关键词： modified gravity cosmology deceleration parameter