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Review of analytical methods for stress and deformation analysis of buried water pipes considering pipe-soil interaction

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Underground Space 2023年第6期13卷 205-227页

作者： Yingxu Huo Sherif mohsen mohamed Hassan Gomaa Tarek Zayed mohamed Meguid Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHung HomHong Kong 999077China Department of Building and Real Estate The Hong Kong Polytechnic UniversityHung HomHong Kong 999077China Structural Engineering Department Faculty of EngineeringMansoura UniversityMansoura 35516Egypt Department of Civil Engineering McGill UniversityMontrealQuebec H3A 0G4Canada

Buried water pipelines are vulnerable to fail or break due to excessive loading or ground *** evaluation of pipe performance and serviceability relies on the proper understanding of pipe-soil interactions(PSI).Analytical methods are important approaches to studying ***,a systematic and thorough literature review to analyze the existing research trends,technological achievements and future research opportunities is not *** work investigates analytical methods that analyze the stress and deformation of pipes in terms of cross-sectional,transverse and longitudinal PSI ***,scientometric analysis is performed to acquire relevant research works from online databases and analyze the existing data of influential authors,productive research sources and frequent key word occurrence in the fields of ***,a qualitative discussion is performed in the three categories of PSI:(1)cross-sectional,including ovalization and circumferential behaviours;(2)transverse,including seismic fault crossing,weak soil zones,ground settlement and pipe uplift;and(3)***,six research opportunities are discussed,including the role of friction in cross-sectional deformation,combined effects of bending and compression,choice of soil reaction models and calibration of key parameters,effect of pipe flaws,soil spatial variability and behaviours of curved *** study helps beginners familiarize themselves with PSI analytical methods and provides experienced researchers with ideas for future research directions.

关键词： Pipeline Analytical methods Pipe-soil interactions Seismic fault Settlement Uplift Buckling Tunnelling

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A Client Design for "Hunan University Course Selection System" via Mobile Phone

A Client Design for "Hunan University Course Selection Syste...

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作者： ABDULLAH mohamed mohsen MOQBEL 湖南大学

学位级别：硕士

随着移动电话用户规模的迅猛增长,同时,手机硬件水平的提升,使得手机电池容量、通信服务以及RAM等手机规格的提升。对手机APP的发展提出了新的要求和挑战。近年来,移动APP已成为全球范围内重要发展价值的软件平台。鉴于此,湖南大学学生... 详细信息

随着移动电话用户规模的迅猛增长,同时,手机硬件水平的提升,使得手机电池容量、通信服务以及RAM等手机规格的提升。对手机APP的发展提出了新的要求和挑战。近年来,移动APP已成为全球范围内重要发展价值的软件平台。鉴于此,湖南大学学生有了开发移动选课系统的理念。该项目的主题是“基于Android智能手机APP的高校选课系统”,该项目的开发基于目前的湖南大学基于Web的学生选课系统。项目的目的是基于当前湖南大学学生Web选课系统开发一个Android手机APP应用于学生选课,该APP可应用于现有市场不同Android智能手机。该APP允许学生通过登录应用添加、删除并检查选课状态,然后记录并添加或删除各学科学生的某些学期,最后提交给管理员或部门的负责人并注销。因此管理人员,教师和学生可以通过自己的手机或笔记本电脑通过WIFI、3G网络连接,无论是在校内还是校外访问这个APP。这个APP是一个使用WIFI才能登录并提交选择或删除科目的客户机/服务器连接,该项目的开发基于规划、分析、设计和实现的生命周期开发的产品概念。并对该项目的应用进行了分析,测试,该报告包含了其所面临的问题和限制以及对今后工作的建议。该项目的开发基于Java 2平台Micro Edition的编程语言,MySQL数据库和Java2平台标准版的编程语言。所用的工具是Android SDK中的J2ME客户端,MySQL管理的数据库,NetBeans7.1的J2SE服务器方面,IBM的Rational Rose的UML。智能手机相对于当代的功能手机可提供更先进的计算能力和连通性,智能手机和功能手机可以被认为是集成了移动电话的掌上电脑,虽然大多数功能手机的应用程序基于Java ME平台,然而智能手机允许用户运行基于底层硬件的多程序应用。智能手机上运行完整的操作系统软件提供了 APP的开发平台,因此,它们结合了拍照手机和个人数字助理(PDA)的功能。iPhone OS或OSX iPhone是由苹果公司为iPhone和iPod Touch开发的操作系统。像Mac OS X衍生于此,它采用了Darwin开发系统。IPhone OS有四个抽象层:核心操作系统层,核心服务层,媒体层和Cocoa Touch层。2007年11月,谷歌首次公开Android移动平台以来,它已经吸引了超过18万的开发者和5万的移动应用程序。如今,超过60个智能手机的主要制造商运行采用Android平台,此外,在过去的两年里,通过移动电话(包括Android平台和非Android平台)的网络搜索次数已增加了五倍。所有这些数字都显示了 Android平台良好发展前景,以及移动应用将如何通过智能手机用户变得更为广泛,这些用户中的一个较大的比例包括大学生的成年人。另外Android提供了一个开源软件平台的智能手机,其中包括基于Linux的内核,Java应用程序和中间设备。而Android中间设备提供的系统库和服务,以促进性能发展。设备特定功能,如屏幕显示,多媒体和网络浏览。Android系统跟踪的一些应用程序,这些应用程序利用系统服务来实现某些预先定义的功能或者吸引用户的关注而具有较好前景。无线技术的发展为改善移动应用和转化的基于Web的应用程序的移动应用环境提供了机会,在当下移动通信时代,智能手机移动APP是一个最热门的行业。大多数大学都提供无线校园,方便使用互联网。有些学生使用的笔记本电脑,PDA和智能手机,所以这是很好的机会,让学生在任何时候任何地方轻松地获取信息。因此,该系统为学生在学校提供多种访问选择,譬如添加,删除并检查您的状态。移动选课系统是目前基于Web的选课系统的另一个选择方式,满足每个教师提高学习的基本要求,移动APP是具有挑战性的项目。开发这种手机应用的最佳选择就是选择一个支持手机或智能手机操作系统的主要编程语言。Android使用Java技术,因此开发人员选择这个平台上使用Android的Java开发环境(JDE)工具做这个项目。该APP目标用户是在学的所有教师和学生,用户组的移动设备至少支持GPRS功能和嵌入微网络浏览器。GPRS使移动设备连接到互联网。否则,移动设备应支持WIFI功能,因此它可以连接到局域网的免费网络连接,然后接入到系统中。如今,大多数的手机均支持GPRS,因此在这所大学有手机每个人几乎都有可能成为该系统的目标用户。初步研究以问卷调查为主。问卷用来收集来自湖南大学教师和学生的反馈。问卷调查的目的是为了保证本次拟应用程序管理满足用户的需求,另一个主要目的是用户兴趣和接受这个新的移动APP的水平。深入研究是收集数据,来自于利用期刊,文章,书籍,网站信息。

关键词：多操作系统移动应用安卓操作系统基于纸张的应用基于网络的应用移动应用的CSS

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The Combined Effect of Plastic Particles Size and Concentration on Rotifers’ (Brachionus plicatilis) Performance

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Journal of Ocean University of China 2022年第2期21卷 509-519页

作者： SUI Yanming WANG Senyang mohsen mohamed ZHANG Longsheng SHEN Mengyan LIU Zhiquan NGUYEN Haidang ZHANG Shengmao LI Kaixing LV Linlan DONG Xuexing School of Marine and Biological Engineering Yancheng Institute of TechnologyYancheng 224002China Department of Animal Production Faculty of AgricultureAl-Azhar UniversityNasr CityCairo 11884Egypt CAS Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China School of Life Sciences East China Normal UniversityShanghai 200241China Research Institute for Aquaculture No.1 Dinh Bang-Tu Son-Bac Ninh 16352Vietnam East China Sea Fishery Research Institute Chinese Academy of Fishery SciencesShanghai 200090China

The presence of microplastics in aquatic ecosystems is of increasing global ***-sized plastics,in particular,can penetrate the cell membrane and cause biological *** study evaluated the combined impacts of several polystyrene mi-crospheres’sizes and nominal concentrations on the overall performance changes of Brachionus *** animals were exposed to three microplastic sizes(0.08,0.5 and 6μm)and five nominal concentrations(0,0.5,2,8,32μg mL−1)for 20 *** results showed that the toxicological effect of particle size on rotifers did not significantly depend on the nominal *** interaction between the nominal concentration and size occurred only for body length and lorica ***,high nominal concentrations of microplastics that were close to nanometer size significantly impaired the overall vitality of rotifers,embodied in shortage of body type,delay in the arrival of maturity,reduction in the cumulative number of neonates,and the advance of the death *** comparison,fair-sized size(0.5 and 6μm)displayed non-significant damage except for individual *** notably,the net reproductive yield was only a third of what it was in the original environment,implying that there was not much fertility ***,with the development of rotifers,the adverse effects of polystyrene microsphere drive had become more and more serious.

关键词： microplastic zooplankton environmental stress life-history parameters

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Childhood asthma biomarkers including zinc: An exploratory crosssectional study

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World Journal of Clinical Pediatrics 2024年第1期13卷 31-40页

作者： Hoda Atef Abdelsattar Ibrahim Mona mohsen Boles Salep Aziz Hanna Dina Mahmoud Khaled mohamed Abdelhamid El-Khashab Pediatric Clinical Nutrition Unit Faculty of MedicineCairo UniversityCairo 12613Egypt Department of Pediatrics Faculty of MedicineCairo UniversityCairo 12613Egypt Department of Clinical Pathology Faculty of MedicineCairo UniversityCairo 12613Egypt

BACKGROUND Childhood bronchial asthma(BA)is a chronic inflammatory respiratory *** conditions,including zinc deficiency,can affect such allergic *** To outline the difference in serum zinc levels between asthmatic children and healthy *** A cross-sectional study was carried out at Children’s Hospital,Cairo University,investigating serum zinc levels in children with BA(n=40)and healthy children(n=21).Other markers included serum ferritin,iron,hemoglobin(Hb),and immunoglobulin E(IgE)*** t-tests and Mann-Whinny tests were used for *** Kruskal-Wallis test was applied to compare serum ferritin and IgE levels with regard to asthma ***'s rank correlation was performed to explore the relationship between serum ferritin levels and both iron and Hb levels in asthmatic *** Children with BA had higher levels of zinc,yet the difference was not significant(P=0.115).Serum ferritin and IgE levels were significantly higher in asthmatic children(P=0.006 and 0.001,respectively),yet their levels did not differ significantly by severity(P=0.623 and 0.126,respectively).There was a nonsignificant weak correlation between serum ferritin levels and both serum iron and Hb *** Serum zinc levels do not seem to differ between asthmatic children and healthy *** ferritin levels may be a marker of asthma *** IgE levels are not markers of asthma severity.

关键词： Children Asthma Zinc Ferritin

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A New Speed Limit Recognition Methodology Based on Ensemble Learning:Hardware Validation

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Computers, Materials & Continua 2024年第7期80卷 119-138页

作者： mohamed Karray Nesrine Triki mohamed Ksantini ESME ESME Research LabIvry Sur Seine94200France CEM Lab ENISUniversity of SfaxSfax3038Tunisia

Advanced DriverAssistance Systems(ADAS)technologies can assist drivers or be part of automatic driving systems to support the driving process and improve the level of safety and comfort on the *** Sign Recognition System(TSRS)is one of themost important components *** the challengeswith TSRS is being able to recognize road signs with the highest accuracy and the shortest processing ***,this paper introduces a new real time methodology recognizing Speed Limit Signs based on a trio of developed ***,the Speed Limit Detection(SLD)module uses the Haar Cascade technique to generate a new SL detector in order to localize SL signs within captured ***,the Speed Limit Classification(SLC)module,featuring machine learning classifiers alongside a newly developed model called DeepSL,harnesses the power of a CNN architecture to extract intricate features from speed limit sign images,ensuring efficient and precise *** addition,a new Speed Limit Classifiers Fusion(SLCF)module has been developed by combining trained ML classifiers and the DeepSL model by using the Dempster-Shafer theory of belief functions and ensemble learning’s voting *** rigorous software and hardware validation processes,the proposedmethodology has achieved highly significant F1 scores of 99.98%and 99.96%for DS theory and the votingmethod,***,a prototype encompassing all components demonstrates outstanding reliability and efficacy,with processing times of 150 ms for the Raspberry Pi board and 81.5 ms for the Nano Jetson board,marking a significant advancement in TSRS technology.

关键词： Driving automation advanced driver assistance systems(ADAS) traffic sign recognition(TSR) artificial intelligence ensemble learning belief functions voting method

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Design of Protograph LDPC-Coded MIMO-VLC Systems with Generalized Spatial Modulation

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China Communications 2024年第3期21卷 118-136页

作者： Dai Lin Fang Yi Guan Yongliang mohsen Guizani School of Information Engineering Guangdong University of TechnologyGuangzhou 51006China The State Key Laboratory of Integrated Services Networks Xidian UniversityXi’an 710126China School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore Department of Machine Learning Mohamed Bin Zayed University of Artificial Intelligence(MBZUAI)Abu DhabiUnited Arab Emirates

This paper investigates the bit-interleaved coded generalized spatial modulation(BICGSM) with iterative decoding(BICGSM-ID) for multiple-input multiple-output(MIMO) visible light communications(VLC). In the BICGSM-ID scheme, the information bits conveyed by the signal-domain(SiD) symbols and the spatial-domain(SpD) light emitting diode(LED)-index patterns are coded by a protograph low-density parity-check(P-LDPC) code. Specifically, we propose a signal-domain symbol expanding and re-allocating(SSER) method for constructing a type of novel generalized spatial modulation(GSM) constellations, referred to as SSERGSM constellations, so as to boost the performance of the BICGSM-ID MIMO-VLC ***, by applying a modified PEXIT(MPEXIT) algorithm, we further design a family of rate-compatible P-LDPC codes, referred to as enhanced accumulate-repeat-accumulate(EARA) codes,which possess both excellent decoding thresholds and linear-minimum-distance-growth property. Both analysis and simulation results illustrate that the proposed SSERGSM constellations and P-LDPC codes can remarkably improve the convergence and decoding performance of MIMO-VLC systems. Therefore, the proposed P-LDPC-coded SSERGSM-mapped BICGSMID configuration is envisioned as a promising transmission solution to satisfy the high-throughput requirement of MIMO-VLC applications.

关键词： bit-interleaved coded modulation generalized spatial modulation multiple-input multipleoutput protograph LDPC codes visible light communication

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A Distributionally Robust Optimization Scheduling Model for Regional Integrated Energy Systems Considering Hot Dry Rock Co-Generation

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Computer Modeling in Engineering & Sciences 2024年第8期140卷 1387-1404页

作者： Hao Qi mohamed Sharaf Andres Annuk Adrian Ilinca mohamed A.mohamed College of Electrical and New Energy China Three Gorges UniversityYichang443002China Department of Industrial Engineering College of EngineeringKing Saud UniversityRiyadh11421Saudi Arabia Institute of Forestry and Engineering Estonian University of Life SciencesTartu51006Estonia Department of Mechanical Engineering école de Technologie SupérieureMontréalQC H3C 1K3Canada Electrical Engineering Department Faculty of EngineeringMinia UniversityMinia61519Egypt

Hot dry rock(HDR)is rich in reserve,widely distributed,green,low-carbon,and has broad development potential and *** this paper,a distributionally robust optimization(DRO)scheduling model for a regionally integrated energy system(RIES)considering HDR co-generation is ***,the HDR-enhanced geothermal system(HDR-EGS)is introduced into the ***-EGS realizes the thermoelectric decoupling of combined heat and power(CHP)through coordinated operation with the regional power grid and the regional heat grid,which enhances the system wind power(WP)feed-in ***,peak-hour loads are shifted using price demand response guidance in the context of time-of-day ***,the optimization objective is established to minimize the total cost in the RIES scheduling cycle and construct a DRO scheduling model for RIES with *** simulating a real small-scale RIES,the results show that HDR-EGS can effectively promote WP consumption and reduce the operating cost of the system.

关键词： Energy harvesting integrated energy systems optimum scheduling time-of-use pricing demand response geothermal energy

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Calculus bovis in hepatocellular carcinoma:Tumor molecular basis,Wnt/β-catenin pathway role,and protective mechanism

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World Journal of Gastroenterology 2024年第35期30卷 3959-3964页

作者： Khaled mohamed mohamed Koriem Department of Medical Physiology Medical Research and Clinical Studies InstituteNational Research CentreGiza 12622Egypt

In this editorial,we comment on the recent article by Huang et *** editorial focuses specifically on the molecular mechanisms of hepatocellular carcinoma(HCC),mechanism of Wnt/β-catenin pathway in HCC,and protective mechanism of Calculus bovis(CB)in *** cancer is the fourth most common cause of cancer-related deaths *** most prevalent kind of primary liver cancer,HCC,is typically brought on by long-term viral infections(hepatitis B and C),non-alcoholic steatohepatitis,excessive alcohol consumption,and other conditions that can cause the liver to become chronically inflamed and *** is a wellknown traditional remedy in China and Japan and has been used extensively to treat a variety of diseases,such as high fever,convulsions,and *** in lipid metabolism,cholesterol metabolism,bile acid metabolism,alcohol metabolism,and xenobiotic detoxification lead to fatty liver disease and liver ***,which is a tricarboxylic acid cycle intermediate,is vital to energy production and mitochondrial *** is also thought to be a signaling molecule in metabolism and in the development and spread of liver *** Wnt/β-catenin pathway is made up of a group of proteins that are essential for both adult tissue homeostasis and embryonic *** is frequently caused by the dysregulation of the Wnt/β-catenin signaling *** HCC liver carcinogenesis,Wnt/β-catenin signaling is activated by the expression of downstream target *** between the liver and the gut exists via the portal vein,biliary tract,and systemic ***"gutliver axis"controls intestinal *** of the main factors contributing to the development,progression,and treatment resistance of HCC is the abnormal activation of the Wnt/β-Catenin signaling ***,understanding this pathway is essential to treating *** ingredients of CB,particularly oleanolic acid,ergosterol,and ursolic acid,have anti-p

关键词： Hepatocellular carcinoma MicroRNAs Wnt/β-catenin pathway Calculus bovis Apoptosis

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Privacy-preserved learning from non-i.i.d data in fog-assisted IoT:A federated learning approach

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Digital Communications and Networks 2024年第2期10卷 404-415页

作者： mohamed Abdel-Basset Hossam Hawash Nour Moustafa Imran Razzak mohamed Abd Elfattah Faculty of Computers and Informatics Zagazig UniversityZagazigSharqiyah44519Egypt School of Engineering and Information Technology University of New South Wales@ADFACanberraACT2600Australia Deakin University Geelong Waurn Ponds CampusAustralia Computer Science Department Misr Higher Institute for Commerce and ComputersMansoura35511Egypt

With the prevalence of the Internet of Things(IoT)systems,smart cities comprise complex networks,including sensors,actuators,appliances,and cyber *** complexity and heterogeneity of smart cities have become vulnerable to sophisticated cyber-attacks,especially privacy-related attacks such as inference and data poisoning *** Learning(FL)has been regarded as a hopeful method to enable distributed learning with privacypreserved intelligence in IoT *** though the significance of developing privacy-preserving FL has drawn as a great research interest,the current research only concentrates on FL with independent identically distributed(i.i.d)data and few studies have addressed the non-i.i.d *** is known to be vulnerable to Generative Adversarial Network(GAN)attacks,where an adversary can presume to act as a contributor participating in the training process to acquire the private data of other *** paper proposes an innovative Privacy Protection-based Federated Deep Learning(PP-FDL)framework,which accomplishes data protection against privacy-related GAN attacks,along with high classification rates from non-i.i.d ***-FDL is designed to enable fog nodes to cooperate to train the FDL model in a way that ensures contributors have no access to the data of each other,where class probabilities are protected utilizing a private identifier generated for each *** PP-FDL framework is evaluated for image classification using simple convolutional networks which are trained using MNIST and CIFAR-10 *** empirical results have revealed that PF-DFL can achieve data protection and the framework outperforms the other three state-of-the-art models with 3%–8%as accuracy improvements.

关键词： Privacy preservation Federated learning Deep learning Fog computing Smart cities

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Comparison between seismic analysis of twisting and regular 52-story towers considering soil-structure interaction

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Earthquake Engineering and Engineering Vibration 2024年第3期23卷 663-675页

作者： mohamed Naguib Abouelsaad Mohammed Shaaban Salah El Bagalaty mohamed E.El Madawy Structural Engineering Department Faculty of EngineeringMansura UniversityMansoura 35511Egypt Faculty of Engineering Delta University for Science and TechnologyGamasa 35712Egypt

A dynamic analysis of both twisting and regular towers is carried out to determine the results of considering soil-structure interaction(SSI)on high-rise *** addition,the difference between the seismic performance of using twisting towers over regular ones is *** twisting tower is a simulation of the Evolution Tower(Moscow).The towers’skeletons consist of RC elements and rest on a reinforced concrete piled-raft *** soil model is considered as multi-layered with the same soil properties as the zone chosen for the analysis(New Mansoura City,Egypt).The only difference between both towers is their shape in *** whole system is modelled and analyzed in a single step as one full 3D model,which is known as the direct approach in *** analyses are carried out using finite-element software(Midas GTS NX).Dynamic output responses due to three records of seismic loads are proposed and presented in some *** on the results,it is concluded that SSI has a considerable effect on the dynamic response of tall buildings mainly because of the foundation flexibility,as it leads to lengthening the vibration period,increasing the story drift and the base shear for both cases.

关键词： soil-structure interaction seismic analysis twisting towers base shear story drift finite element method Midas GTS NX

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