检索结果-南通市图书馆

COCP:Coupling Parameters Content Placement Strategy for In-Network Caching-Based Content-Centric Networking

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 2022年第6期71卷 5523-5543页

作者： Salman Rashid Shukor Abd Razak Fuad A.Ghaleb Faisal Saeed eman H.Alkhammash School of Computing Faculty of EngineeringUniversiti Teknologi MalaysiaJohor Bahru81310Malaysia College of Computer Science and Engineering Taibah UniversityMedina 42353Saudi Arabia Department of Computer Science College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia

On-path caching is the prominent module in Content-Centric Networking(CCN),equipped with the capability to handle the demands of future networks such as the Internet of Things(IoT)and vehicular *** main focus of the CCN caching module is data dissemination within the *** of the existing strategies of in-network caching in CCN store the content at the maximumnumber of routers along the downloading ***,content redundancy in the network increases significantly,whereas the cache hit ratio and network performance decrease due to the unnecessary utilization of limited cache ***,content redundancy adversely affects the cache resources,hit ratio,latency,bandwidth utilization,and server *** proposed an in-network caching placement strategy named Coupling Parameters to Optimize Content Placement(COCP)to address the content redundancy and associated *** novelty of the technique lies in its capability tominimize content redundancy by creating a balanced cache space along the routing path by considering request rate,distance,and available cache *** proposed approach minimizes the content redundancy and content dissemination within the network by using appropriate locations while increasing the cache hit ratio and network *** COCP is implemented in the simulator(Icarus)to evaluate its performance in terms of the cache hit ratio,path stretch,latency,and link *** experiments have been conducted to evaluate the proposed COCP *** proposed COCP technique has been compared with the existing state-of-theart techniques,namely,Leave Copy Everywhere(LCE),Leave Copy Down(LCD),ProbCache,Cache Less formore(CL4m),and *** results obtained with different cache sizes and popularities show that our proposed caching strategy can achieve up to 91.46%more cache hits,19.71%reduced latency,35.43%improved path stretch and 38.14%decreased link *** results confirm that the proposed COCP strateg

关键词： Content-centric networking on-path caching content redundancy security privacy data dissemination internet of things

Patterns of reproduction in two sympatric gerbil species in arid Egypt

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Integrative Zoology 2009年第2期4卷 248-253页

作者： Sohail SOLImAN eman m.mOHALLAL Department of Zoology Faculty of ScienceAin Shams UniversityAbbasiyaCairoEgypt Desert Research Centre MatariyaCairoEgypt

Despite a significant number of studies on the reproductive characteristics of small mammals,very little of this work has been conducted on species in ***,the Egyptian greater gerbil(Gerbillus pyramidum Saint-Hilaire,1825)and Anderson’s lesser Egyptian gerbil(Gerbillus andersoni De Winton,1902)in northeastern Egypt were *** behavior in these species was synchronized with rainfall in the winter and spring *** however,the removal of individual gerbils throughout the course of study resulted in an extension of reproductive activity into the dry summer and autumn months in the latter part of the *** results are discussed in the context of density-dependent reproductive behavior in small mammals.

关键词： compensation density dependent Egypt Gerbillus reproduction Sinai.

Investigating How Parental Perceptions of Cybersecurity Influence Children’s Safety in the Cyber World: A Case Study of Saudi Arabia

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 Information management 2023年第5期15卷 350-372页

作者： Tariq Saeed mian eman m. Alatawi Department of IS College of Computer Science and Engineering Taibah University Madinah Almunwarah Saudi Arabia

This paper explores the convergence of Saudi Arabia’s Vision 2030 with the increasing dependence on the Internet for educational purposes. It sheds light on the potential cybersecurity risks and how parental perception impacts children’s willingness to adapt cybersecurity features. By instilling the significance of cybersecurity awareness in early stages, society can provide children with the necessary skills to navigate the digital realm responsibly. As we progress, ongoing research and collaborative endeavors will be pivotal in formulating effective strategies to shield the digital generation from the potential pitfalls of the virtual realm. Regular Internet usage is essential for various purposes such as communication, education, and leisure. The cohorts of Generation Z and Alpha were born during a period of exponential Internet growth, leading them to heavily engage with the Internet. Consequently, they are equally vulnerable to cybersecurity threats just like adults. Addressing potential security risks for today’s youth becomes the responsibility of parents as the primary line of defense. This research focuses on raising awareness about the imperative of ensuring children’s safety in the online sphere, particularly by their parents. The study is conducted within the specific context of Saudi Arabia, aiming to examine how Saudi parents’ perception of cybersecurity influences their children’s cyber safety. The study identifies critical factors, including attitudes towards cybersecurity, awareness of cybersecurity, and prevailing social norms regarding cybersecurity. These factors contribute to the development of parents’ intention to prioritize cybersecurity, which consequently affects their children’s behaviors in the digital realm. Utilizing a quantitative approach based on a questionnaire, the study employs a Structural Equation modeling (SEm) framework to analyze the collected data. The study’s findings underscore that parents’ intent towards cybersecurity pl

关键词： E-Learning Cybersecurity Saudi Arabia Saudi Vision 2030 Cybersecurity Awareness Parenting in Cyber Era Adolescence

An Automated System for Early Prediction of miscarriage in the First Trimester Using machine Learning

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4期75卷 1291-1304页

作者： Sumayh S.Aljameel malak Aljabri Nida Aslam Dorieh m.Alomari Arwa Alyahya Shaykhah Alfaris maha Balharith Hiessa Abahussain Dana Boujlea eman S.Alsulmi Department of Computer Science College of Computer Science and Information TechnologyImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Computer Science Department College of Computer and Information SystemsUmm Al-Qura UniversityMakkah21955Saudi Arabia Department of Computer Engineering College of Computer Science and Information TechnologyImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Department of Obstetrics and Gynecology College of MedicineImam Abdulrahman Bin Faisal UniversityDammamSaudi Arabia

Currently, the risk factors of pregnancy loss are increasing andare considered a major challenge because they vary between cases. The earlyprediction of miscarriage can help pregnant ladies to take the needed careand avoid any danger. Therefore, an intelligent automated solution must bedeveloped to predict the risk factors for pregnancy loss at an early stage toassist with accurate and effective diagnosis. machine learning (mL)-baseddecision support systems are increasingly used in the healthcare sector andhave achieved notable performance and objectiveness in disease predictionand prognosis. Thus, we developed a model to help obstetricians predictthe probability of miscarriage using mL. And support their decisions andexpectations about pregnancy status by providing an easy, automated way topredict miscarriage at early stages using mL tools and techniques. Althoughmany published papers proposed similar models, none of them used Saudiclinical data. Our proposed solution used mL classification algorithms tobuild a miscarriage prediction model. Four classifiers were used in this study:decision tree (DT), random forest (RF), k-nearest neighbor (KNN), andgradient boosting (GB). Accuracy, Precision, Recall, F1-score, and receiveroperating characteristic area under the curve (ROC-AUC) were used to evaluatethe proposed model. The results showed that GB overperformed the otherclassifiers with an accuracy of 93.4% and ROC-AUC of 97%. This proposedmodel can assist in the early identification of at-risk pregnant women to avoidmiscarriage in the first trimester and will improve the healthcare sector inSaudi Arabia.

关键词： miscarriage pregnancy abortion machine learning gradient boosting

Embedded Coded Relay System for molecular Communications

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 2022年第8期72卷 2729-2748页

作者： eman S.Attia Ashraf A.m.Khalaf Fathi E.Abd El-Samie Saied m.Abd El-atty Konstantinos A.Lizos Osama Alfarraj Farid Shawki Imran Khan Ki-Il Kim Department of Electrical Engineering Faculty of EngineeringMinia UniversityMiniaEgypt Department of Electronics and Electrical Communications Faculty of Electronic EngineeringMenoufia UniversityMenoufiaEgypt Department of Informatics Faculty of Mathematics and Natural SciencesUniversity of Oslo(UiO)Norway Computer Science Department Community CollegeKing Saud UniversityRiyadh11437Saudi Arabia Department of Electrical Engineering University of Engineering&TechnologyPeshawar814Pakistan Department of Computer Science and Engineering Chungnam National UniversityDaejeon34134Korea

With the emergence of the COVID-19 pandemic,the World Health Organization(WHO)has urged scientists and industrialists to exploremodern information and communication technology(ICT)as a means to reduce or even eliminate *** World Health Organization recently reported that the virus may infect the organism through any organ in the living body,such as the respiratory,the immunity,the nervous,the digestive,or the cardiovascular *** the abovementioned goal,we envision an implanted nanosystem embedded in the intra living-body *** main function of the nanosystem is either to perform diagnosis and mitigation of infectious diseases or to implement a targeted drug delivery system(i.e.,delivery of the therapeutic drug to the diseased tissue or targeted cell).The communication among the nanomachines is accomplished via communication-based molecular *** control/interconnection of the nanosystem is accomplished through the utilization of Internet of bio-nano things(IoBNT).The proposed nanosystem is designed to employ a coded relay nanomachine disciplined by the decode and forward(DF)principle to ensure reliable drug delivery to the targeted ***,both the sensitivity of the drug dose and the phenomenon of drug molecules loss before delivery to the target cell site in long-distance due to the molecules diffusion process are taken into *** this paper,a coded relay Nm with conventional coding techniques such as RS and Turbo codes is selected to achieve minimum bit error rate(BER)performance and high signal-to-noise ratio(SNR),while the detection process is based on maximum likelihood(mL)probability and minimum error probability(mEP).The performance analysis of the proposed scheme is evaluated in terms of channel capacity and bit error rate by varying system parameters such as relay position,number of released molecules,relay and receiver *** results are validated through simulation and demonstrate that the proposed scheme can

关键词： molecular communication nanonetwork internet of bio-nano things coded relay scheme coding

Cardiac stem cells: Current knowledge and future prospects

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Stem Cells 2022年第1期14卷 1-40页

作者： Radwa A mehanna marwa m Essawy mona A Barkat Ashraf K Awaad eman H Thabet Heba A Hamed Hagar Elkafrawy Nehal A Khalil Abeer Sallam marwa A Kholief Samar S Ibrahim Ghada m mourad medical Physiology Department/Center of Excellence for Research in Regenerative medicine and Applications Faculty of MedicineAlexandria UniversityAlexandria 21500Egypt Oral Pathology Department Faculty of Dentistry/Center of Excellence for Research in Regenerative Medicine and ApplicationsFaculty of MedicineAlexandria UniversityAlexandria 21500Egypt Human Anatomy and Embryology Department/Center of Excellence for Research in Regenerative medicine and Applications Faculty of MedicineAlexandria UniversityAlexandria 21500Egypt Center of Excellence for Research in Regenerative medicine and Applications Faculty of MedicineAlexandria UniversityAlexandria 21500Egypt Histology and Cell Biology Department/Center of Excellence for Research in Regenerative medicine and Applications Faculty of MedicineAlexandria UniversityAlexandria 21500Egypt medical Biochemistry Department/Center of Excellence for Research in Regenerative medicine and Applications Faculty of MedicineAlexandria UniversityAlexandria 21500Egypt Forensic medicine and Clinical toxicology Department/Center of Excellence for Research in Regenerative medicine and Applications Faculty of MedicineAlexandria UniversityAlexandria 21500Egypt

Regenerative medicine is the field concerned with the repair and restoration of the integrity of damaged human tissues as well as whole *** the inception of the field several decades ago,regenerative medicine therapies,namely stem cells,have received significant attention in preclinical studies and clinical *** from their known potential for differentiation into the various body cells,stem cells enhance the organ's intrinsic regenerative capacity by altering its environment,whether by exogenous injection or introducing their products that modulate endogenous stem cell function and fate for the sake of ***,research in cardiology has highlighted the evidence for the existence of cardiac stem and progenitor cells(CSCs/CPCs).The global burden of cardiovascular diseases’morbidity and mortality has demanded an in-depth understanding of the biology of CSCs/CPCs aiming at improving the outcome for an innovative therapeutic *** review will discuss the nature of each of the CSCs/CPCs,their environment,their interplay with other cells,and their *** addition,important issues are tackled concerning the potency of CSCs/CPCs in relation to their secretome for mediating the ability to influence other ***,the review will throw the light on the clinical trials and the preclinical studies using CSCs/CPCs and combined therapy for cardiac ***,the novel role of nanotechnology in cardiac regeneration will be explored.

关键词： Cardiac stem and progenitor cells Cardiac stem cells’secretome Cardiac stem cells’niche and metabolism Nanotechnology Clinical trials Combined therapy

Anti-inflammatory and antioxidant potential capacities of AD-mSCs and Bm-mSCs in suppressing pancreaticβ-cells auto-immunity and apoptosis in rats with T1Dm induced model

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

BIOCELL 2022年第3期46卷 745-757页

作者： SHADY G.EL-SAWAH FAYEZ ALTHOBAITI HANAN m.RASHWAN ADIL ALDHAHRANI mARWA A.ABDEL-DAYEm eman FAYAD REHAB m.AmEN EL SHAImAA SHABANA EHAB I.EL-HALLOUS Zoology Department Faculty of ScienceArish UniversityNorth SinaiEgypt Biotechnology Department Faculty of ScienceTaif UniversityTaifSaudi Arabia Clinical Laboratory Science Department Turabah University CollegeTaif UniversityTaifSaudi Arabia Department of Pharmacology and Biochemistry Faculty of PharmacyHorus University-EgyptNew DamiettaEgypt Biology Department College of ScienceUniversity of BishaBishaSaudi Arabia Fellow of Biochemistry Genetic UnitChildren HospitalFaculty of MedicineMansoura UniversityDakahlia GovernorateEgypt Biology Department Faculty of ScienceTaif UniversityTaifSaudi Arabia

Since Type 1 diabetes(T1Dm)occurs whenβ-cells mass is reduced to less than 20%of the normal level due to autoimmune destruction of cells resulting in the inability to secrete insulin,preservation or replenishment of the functionalβ-cells mass has become a major therapeutic focus for this diabetic type ***,this 4-week work plan was designed to determine which mesenchymal stem cells(mSCs)type is more appropriate to alleviate pancreatic hazards resulting from diabetes induction;via tracking a comparative study between mSCs derived from adipose tissue(AD-mSCs)and from bone marrow(Bm-mSCs)in management of T1Dm considering their immunomodulatory,anti-apoptotic and antioxidative *** were divided randomly into 4 groups;control,STZdiabetic(D),D+AD-mSCs,and D+Bm-mSCs *** stem cells types in this study were ***,both oxidative stress and antioxidant markers were evaluated using colorimetric analysis,while inflammatory,immune and apoptotic markers were assessed through flow cytometric *** showed that diabetic rats treated with either AD-mSCs or Bm-mSCs exhibited marked pancreatic antioxidant and anti-inflammatory activities that were able to initiate pancreatic immunomodulation and reducingβ-cells apoptotic death,thus,help to restore their normal insulin secretion and hypoglycemic ***,AD-mSCs injection was shown to be superior as a pancreatic regenerative tool in overcoming diabetes;owing to their marked antioxidant,anti-inflammatory,immunomodulatory,and anti-apoptotic characteristics over Bm-mSCs treatment.

关键词： Antioxidants Apoptosis Diabetes Inflammation Stem cells

Serum homocysteine,lipid profile and BmI as atherosclerotic risk factors in children with numerical chromosomal aberrations

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Pediatrics 2022年第6期18卷 443-448页

作者： eman R.Youness Sherien mEl-Daly Hanaa Reyad Abdallah Hala T.El-Bassyouni Hisham megahed Azzah A.Khedr marwa Elhady Walaa Alsharany Abuelhamd medical Biochemistry Department Medical Research DivisionNational Research CentreGizaEgypt Biological Anthropology Department Medical Research DivisionNational Research CentreGizaEgypt Clinical Genetics Department Human Genetics and Genome Research DivisionNational Research CentreEl-Tahrir StreetPO:12622GizaEgypt Human Cytogenetics Department Human Genetics and Genome Research DivisionNational Research CentreGizaEgypt Pediatric Department Faculty of Medicine for GirlsAl-Azhar UniversityCairoEgypt Department of Pediatrics Faculty of MedicineCairo UniversityCairoEgypt

Down syndrome,Turner syndrome,and Klinefelter syndrome are the most common chromosomal disorders *** syndrome is caused by an extra copy of the 21st chromosome and has an incidence of 1 in 800 to 1000 live *** syndrom... 详细信息

关键词： chromosomal Turner Serum

Entanglement and Sudden Death for a Two-mode Radiation Field Two Atoms

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 2021年第2期66卷 1227-1236页

作者： eman m.A.Hilal E.m.Khalil S.A.bdel-Khalek Department of mathematics Faculty of ScienceUniversity of JeddahJeddahSaudi Arabia mathematics Department Faculty of ScienceTaif UniversityTaif CitySaudi Arabia Department of mathematics Faculty of ScienceAl-Azhar UniversityCairoEgypt Department of mathematics Faculty of ScienceSohag UniversitySohagEgypt

The effect of the field–field interaction on a cavity containing two qubit(TQ)interacting with a two mode of electromagnetic field as parametric amplifier type is *** performing an appropriate transformation,the constants of motion are *** the Schrödinger differential equation a system of differential equations was obtained,and the general solution was obtained in the case of exact *** statistical quantities were calculated and discussed in detail to describe the features of this *** collapses and revivals phenomena have been discussed in *** Shannon information entropy has been applied for measuring the degree of entanglement(DE)between the qubits and the electromagnetic *** normal squeezing for some values of the parameter of the field–field interaction is *** results showed that the collapses disappeared after the field–field terms were added and the maximum values of normal squeezing decrease when increasing of the field–field interaction *** the revivals and amplitudes of the oscillations increase when the parameter of the field–field interaction *** of entanglement is partially more entangled with increasing of the field-field interaction *** relationship between revivals,collapses and the degree of entanglement(Shannon information entropy)was monitored and discussed in the presence and absence of the field–field interaction.

关键词： Field-field interaction su(1,1)Lie group degree of entanglement normal squeezing