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Unlocking the power of blockchain in education:An overview of innovations and outcomes

Blockchain(Research and Applications) 2023年第4期4卷 99-117页

作者： amr El Koshiry Entesar Eliwa Tarek Abd El-Hafeez Mahmoud Y.Shams Department of Curricula and Teaching Methods College of EducationKing Faisal UniversityAl-Ahsa31982Saudi Arabia Faculty of Specific Education Minia UniversityMinia61519Egypt Department of Mathematics and Statistics College of ScienceKing Faisal UniversityAl-Ahsa31982Saudi Arabia Department of Computer Science Faculty of ScienceMinia UniversityMinia61519Egypt Computer Science Unit Deraya UniversityMinia UniversityMinia61519Egypt Faculty of Artificial Intelligence Kafrelsheikh UniversityKafrelsheikh33516Egypt

Blockchain is a revolutionary technology that has the potential to revolutionize various industries,including finance,supply chain management,healthcare,and *** decentralized,secure,and transparent nature makes it ideal for use in industries where trust,security,and efficiency are of paramount *** integration of blockchain technology into the education system has the potential to greatly improve the efficiency,security,and credibility of the educational *** creating secure and transparent platforms for tracking and verifying students’academic achievements,blockchain technology can help to create a more accessible and trustworthy education system,making it easier for students to showcase their skills and knowledge to potential *** the potential benefits of blockchain in education are significant,there are also several challenges that must be addressed in order to fully realize the potential of this technology in the educational *** of the major challenges include adoption,technical knowledge,interoperability,regulation,cost,data privacy and security,scalability,and *** necessary equipment for the implementation of blockchain technology in education is diverse and critical to the success of this innovative *** should carefully consider this equipment when planning their implementation of blockchain technology in education to ensure the efficient and secure transfer of educational data and transactions within the blockchain *** technology has the potential to play a significant role in promoting sustainability education and advancing the sustainability goals of both individuals and *** should consider incorporating blockchain technology into their sustainability education programs,in order to enhance the transparency,verifiability,and efficiency of their sustainability-related *** the use of blockchain technology in education is still i

关键词： Blockchain Education Sustainability Internet of things Machine learning Credential verification

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SwinVid:Enhancing Video Object Detection Using Swin Transformer

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Computer Systems Science & Engineering 2024年第2期48卷 305-320页

作者： Abdelrahman Maharek amr Abozeid Rasha Orban Kamal ElDahshan Computer Science Department Faculty of Artificial Intelligence and InformaticsBenhaEgypt Mathematics Department Faculty of SciencesAl-Azhar UniversityCairoEgypt Department of Computer Science College of Science and Arts in QurayyatJouf UniversitySakakaSaudi Arabia

What causes object detection in video to be less accurate than it is in still images?Because some video frames have degraded in appearance from fast movement,out-of-focus camera shots,and changes in *** reasons have made video object detection(VID)a growing area of research in recent *** object detection can be used for various healthcare applications,such as detecting and tracking tumors in medical imaging,monitoring the movement of patients in hospitals and long-term care facilities,and analyzing videos of surgeries to improve technique and ***,it can be used in telemedicine to help diagnose and monitor patients *** VID techniques are based on recurrent neural networks or optical flow for feature aggregation to produce reliable features which can be used for *** of those methods aggregate features on the full-sequence level or from nearby *** create feature maps,existing VID techniques frequently use Convolutional Neural Networks(CNNs)as the backbone *** the other hand,Vision Transformers have outperformed CNNs in various vision tasks,including object detection in still images and image *** propose in this research to use Swin-Transformer,a state-of-the-art Vision Transformer,as an alternative to CNN-based backbone networks for object detection in *** proposed architecture enhances the accuracy of existing VID *** ImageNet VID and EPIC KITCHENS datasets are used to evaluate the suggested *** have demonstrated that our proposed method is efficient by achieving 84.3%mean average precision(mAP)on ImageNet VID using less memory in comparison to other leading VID *** source code is available on the website https://***/amaharek/SwinVid.

关键词： Video object detection vision transformers convolutional neural networks deep learning

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Rise of sodium-glucose cotransporter 2 inhibitors in the management of nonalcoholic fatty liver disease

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World Journal of Hepatology 2019年第7期11卷 562-573页

作者： amr Dokmak Mohammad Almeqdadi Hirsh Trivedi Sandeep Krishnan Division of Medicine St. Elizabeth’s Medical CenterBrightonMA 02135United States Tufts University School of Medicine BostonMA 02111United States Division of Gastroenterology Beth Israel Deaconess Medical CenterBostonMA 02215United States Division of Gastroenterology St. Elizabeth’s Medical CenterBrightonMA 02135United States

Non-alcoholic fatty liver disease (NAFLD) is the most common form of chronic liver disease in the Western world. It is more prevalent in male gender, and with increasing age, obesity, and insulin resistance. Besides weight loss, there are limited treatment options. The use of anti-diabetic medications has been studied with mixed results. In this review, we discuss the use of anti-diabetic medications in the management of NAFLD with a specific focus on sodium-glucose cotransporter 2 inhibitors. We shed light on the evidence supporting their use in detail and discuss limitations and future directions.

关键词： Non-alcoholic fatty liver disease Non-alcoholic steatohepatitis Sodiumglucose cotransporter 2 inhibitors Liver cirrhosis Diabetes

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A Concise and Varied Visual Features-Based Image Captioning Model with Visual Selection

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Computers, Materials & Continua 2024年第11期81卷 2873-2894页

作者： Alaa Thobhani Beiji Zou Xiaoyan Kui amr Abdussalam Muhammad Asim Naveed Ahmed Mohammed Ali Alshara School of Computer Science and Engineering Central South UniversityChangsha410083China Electronic Engineering and Information Science Department University of Science and Technology of ChinaHefei230026China EIAS Data Science Lab College of Computer and Information SciencesPrince Sultan UniversityRiyadh11586Saudi Arabia College of Computer and Information Sciences Prince Sultan UniversityRiyadh11586Saudi Arabia College of Computer and Information Sciences Imam Mohammad Ibn Saud Islamic UniversityRiyadh11432Saudi Arabia

Image captioning has gained increasing attention in recent *** characteristics found in input images play a crucial role in generating high-quality *** studies have used visual attention mechanisms to dynamically focus on localized regions of the input image,improving the effectiveness of identifying relevant image regions at each step of caption ***,providing image captioning models with the capability of selecting the most relevant visual features from the input image and attending to them can significantly improve the utilization of these ***,this leads to enhanced captioning network *** light of this,we present an image captioning framework that efficiently exploits the extracted representations of the *** framework comprises three key components:the Visual Feature Detector module(VFD),the Visual Feature Visual Attention module(VFVA),and the language *** VFD module is responsible for detecting a subset of the most pertinent features from the local visual features,creating an updated visual features ***,the VFVA directs its attention to the visual features matrix generated by the VFD,resulting in an updated context vector employed by the language model to generate an informative *** the VFD and VFVA modules introduces an additional layer of processing for the visual features,thereby contributing to enhancing the image captioning model’s *** the MS-COCO dataset,our experiments show that the proposed framework competes well with state-of-the-art methods,effectively leveraging visual representations to improve *** implementation code can be found here:https://***/althobhani/VFDICM(accessed on 30 July 2024).

关键词： Visual attention image captioning visual feature detector visual feature visual attention

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Intelligent System Application to Monitor the Smart City Building Lighting

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Computers, Materials & Continua 2023年第5期75卷 3159-3169页

作者： Tzu-Chia Chen Ngakan Ketut Acwin Dwijendra Saurabh Singhal R.Sivaraman amr Mamdouh Department of Industrial Engineering and Management Ming Chi University of TechnologyNew Taipei City24301Taiwan Department of Architecture Faculty of EngineeringUdayana UniversityBali80361Indonesia Department of Computer Engineering and Applications GLA UniversityMathuraUttar PradeshIndia Department of Mathematics Dwaraka Doss Goverdhan Doss Vaishnav CollegeArumbakkamUniversity of MadrasChennaiIndia Architectural Engineering Department Faculty of Engineering&TechnologyFuture University in EgyptNew Cairo11835Egyp

A smart city incorporates infrastructure methods that are environmentally responsible,such as smart communications,smart grids,smart energy,and smart *** city administration has prioritized the use of cutting-edge technology and informatics as the primary strategy for enhancing service quality,with energy resources taking *** achieve optimal energy management in themultidimensional system of a city tribe,it is necessary not only to identify and study the vast majority of energy elements,but also to define their implicit *** is because optimal energy management is required to reach this *** lighting index is an essential consideration when evaluating the comfort *** order to realize the concept of a smart city,the primary objective of this research is to create a system for managing and monitoring the lighting *** is possible to identify two distinct phaseswithin the intelligent *** data collection concludes,the monitoring system will be *** the second step,the operation of the control system is analyzed and its effect on the performance of the numerical model is *** evaluation is based on the proposed *** optimized resultswere deemed satisfactory because they maintained the brightness index value(79%)while consuming less *** intelligent implementation system generated satisfactory outcomes,which were observed 1.75 times on average.

关键词： Smart city lighting index residential building energy consumption

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Optimization Model of Cattle Husbandry for Rural Household in Cambodia

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Journal of Agricultural Chemistry and Environment 2016年第1期5卷 6-11页

作者： Siek Darith Shiwei Xu Wen Yu Ahmed Abdul-gafar Agricultural Information Institute Chinese Academy of Agricultural Sciences Beijing China

Cambodia is one of the Southeast Asia. With the agricultural market integration, Cambodia rural household is adjusting livestock structure naturally. In order to provide suitable support for agriculture policy, the authors conducted a survey on 204 rural household in Cambodia. This article uses the optimization model, considering rural labor, cattle size, and animal disease risk, to analyze and get optimum result range. The result shows that the more off-farm job opportunity, suitable cattle feed structure, and investment on public health for cattle, the household income in rural Cambodia will increase.

关键词： Cattle Income Optimization Model Policy Cambodia

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A Triple-Channel Encrypted Hybrid Fusion Technique to Improve Security of Medical Images

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Computers, Materials & Continua 2021年第7期68卷 431-446页

作者： Ahmed S.Salama Mohamed amr Mokhtar Mazhar B.Tayel Esraa Eldesouky Ahmed Ali Future University in Egypt CairoEgypt Cairo Higher Institute for Engineering Computer Science and ManagementCairoEgypt Department of Electrical Engineering Faculty of EngineeringAlexandria UniversityAlexandria21544Egypt Department of Computer Science Faculty of Computers and InformaticsSuez Canal UniversityIsmailia CityEgypt Higher Future Institute for Specialized Technological Studies CairoEgypt Department of Computer Science College of Computer Engineering and SciencesPrince Sattam Bin Abdulaziz UniversityAl-Kharj11942Saudi Arabia

Assuring medical images protection and robustness is a compulsory necessity *** this paper,a novel technique is proposed that fuses the wavelet-induced multi-resolution decomposition of the Discrete Wavelet Transform(DWT)with the energy compaction of the Discrete Wavelet Transform(DCT).The multi-level Encryption-based Hybrid Fusion Technique(EbhFT)aims to achieve great advances in terms of imperceptibility and security of medical images.A DWT disintegrated sub-band of a cover image is reformed simultaneously using the DCT ***,a 64-bit hex key is employed to encrypt the host image as well as participate in the second key creation process to encode the ***,a PN-sequence key is formed along with a supplementary key in the third layer of the ***,the watermarked image is generated by enclosing both keys into DWT and DCT *** fusions ability of the proposed EbHFT technique makes the best use of the distinct privileges of using both DWT and DCT *** order to validate the proposed technique,a standard dataset of medical images is *** results show higher performance of the visual quality(i.e.,57.65)for the watermarked forms of all types of medical *** addition,EbHFT robustness outperforms an existing scheme tested for the same dataset in terms of Normalized Correlation(NC).Finally,extra protection for digital images from against illegal replicating and unapproved tampering using the proposed technique.

关键词： Medical image processing digital image watermarking discrete wavelet transforms discrete cosine transform encryption image fusion hybrid fusion technique

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Oxytocin improves testicular blood flow without enhancing the steroidogenic activity in Baladi goats

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Asian pacific Journal of Reproduction 2022年第5期11卷 223-230页

作者： Mohamed G.Hedia amr S.El-Shalofy Department of Theriogenology Faculty of Veterinary MedicineCairo UniversityGiza 12211Egypt

Objective:To investigate the effects of a single oxytocin injection on plasma steroid concentrations,testicular blood flow measures(resistive and pulsatility indexes),and testicular echogenicity in Baladi ***:Twelve Baladi goat bucks were randomly allocated into 2 groups and received an intravenous injection of either 0.7 IU/kg oxytocin or normal saline 0.9%.Venous blood samples were collected,and testicular blood flow Doppler parameters(i.e.,peak systolic velocity,end-diastolic velocity,time average maximum velocity,resistive index,and pulsatility index)were assessed for supratesticular arteries in the left and right testes immediately before(0),and at 5,30,60,and 120 min after ***:Plasma concentrations of testosterone significantly decreased in the oxytocin group at 60 min post-treatment compared to the control group,whereas plasma concentrations of estradiol-17βwere not affected(P>0.05).Both resistive index and pulsatility index declined in the oxytocin group at 60 min post-treatment compared to the control group(P<0.05).Testicular pixel intensity increased at 30 min post-treatment in the oxytocin group compared to the control group(P<0.05).Conclusions:Oxytocin treatment significantly increases testicular blood flow and decreases plasma testosterone concentrations in male Baladi goats.

关键词： Bucks Blood flow Doppler Estradiol-17β Goat Oxytocin Testicular artery Testosterone

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Orthogonal Codes-Based Dynamic Spectrum Access in Cognitive Radio Networks

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China Communications 2019年第12期16卷 34-46页

作者： Ehab F.Badran amr A.Bashir Amira I.Zaki Waleed K.Badawi Department of Electronics and Communications Engineering Arab Academy for Science Technology and Maritime Transport

Dynamic spectrum access(DSA) in cognitive radio(CR) networks became a challenging research area recently. In CR technology, the DSA between primary users(PUs) and secondary users(SUs) simultaneously can be achieved without degrading the performance of the PUs by SUs interference. This can be achieved by donating incentive power to the PUs in order to compensate the interference caused by the SUs. Consequently, PUs allow SUs to share the spectrum. In this paper, orthogonal codes-based dynamic spectrum access(OC-DSA) technique is proposed. OC-DSA technique employs orthogonality between PUs and SUs transmitted data symbols in addition to the incentive power donation. Compared to other techniques, the proposed technique uses a simple encoder at the SU network for the same PU network infrastructure. By applying orthogonal codes, the interference caused by SUs is canceled and hence the donated power to incentivize the PUs is reduced. Also, the SU packet rate is increased significantly. The simulation results show that the proposed technique provides effective improvements over other existing techniques in the signal strength and the bit error rate performance of both the PU network and the SU network at the receiver side. Moreover, the proposed technique requires less donated power to incentivize the PU and has higher packet rate.

关键词： cognitive radio dynamic spectrum access orthogonal codes

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Determinants of Blood Pressure Variability in Individuals with Essential Hypertension: A Survey-Based Study

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World Journal of Cardiovascular Diseases 2022年第5期12卷 259-276页

作者： amr Kamal Cardiology Department Faculty of Medicine Alexandria University Alexandria Egypt

Background: Blood pressure variability (BPV) in hypertensive patients is implicated as a remarkable feature leading to additional cardiovascular complications. The aim of the study was to identify the determinants influencing BPV among patients with essential hypertension seen at the Cardiology department of the faculty of medicine, University of Alexandria, Egypt. Methods: This was a descriptive cross-sectional hospital-based study conducted from August 2019 to November 2019. All the eligible patients were made to fill out a standard questionnaire to obtain family and personal clinical history and undergo routine physical examination, laboratory tests and 24-hour ambulatory blood pressure monitoring. BPV was summarized as the standard deviation (SD) of all-day systolic and diastolic BP in both normal patients (with SD 11) and abnormal patients (with SD ≥ 11). Results: Out of a total of 114 patients, 18 (15.8%) non-hypertensive patients were included in the control group and the remaining 96 (84.3%) were classified based on the degree of hypertension. BPV in all these patients was found to be significantly related to the male gender, a mild or moderate degree of hypertension, high prevalence of non-dipping, diabetes, use of beta-blockers as antihypertensive medication, heart rate variability, BMI, and increased day-time variability. Conclusion: Variability in blood pressure influenced by different intrinsic and extrinsic factors plays an important role in the management of hypertension. In order to reduce the burden of disease and for a better quality of life for hypertensive patients, it is important that physicians start considering lowering BPV in addition to reducing physiological BP levels.

关键词： Blood Pressure Variability Determinants Diastolic Essential Hypertension Systolic

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