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Electro-optic tuning in composite silicon photonics based on f.rroionic 2D materials

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Light(Science & Applications) 2024年第5期13卷 852-864页

作者： Ghada Dushaq Solomon Serunjogi Srinivasa R.Tamalampudi mahmoud Rasras Department of.Electrical and Computer Engineering New York University Abu DhabiP.O.Box 129188Abu DhabiUnited Arab Emirates NYU Tandon School of.Engineering New York UniversityNew YorkNYUSA

Tunable optical materials are indispensable elements in modern optoelectronics,especially in integrated photonics circuits where precise control over the ef.ective ref.active index is essential f.r diverse ***-dimensional materials like transition metal dichalcogenides(TMDs)and graphene exhibit remarkable optical responses to external ***,achieving distinctive modulation across short-wave inf.ared(SWIR)regions while enabling precise phase control at low signal loss within a compact f.otprint remains an ongoing *** this work,we unveil the robust electro-ref.active response of.multilayer f.rroionic two-dimensional CuCrP2S6(CCPS)in the near-inf.ared wavelength *** integrating CCPS into silicon photonics(SiPh)microring resonators(MRR),we enhance lightmatter interaction and measurement sensitivity to minute phase and absorption *** show that electrically driven Cu ions can tune the ef.ective ref.active index on the order of.2.8×10−3 RIU(ref.active index unit)while preserving extinction ratios and resonance ***,these devices exhibit low optical losses and excellent modulation ef.iciency of.0.25 *** with a consistent blue shif. in the resonance wavelengths among all devices f.r either polarity of.the applied *** results outperf.rm earlier f.ndings on phase shif.ers based on ***,our study demonstrates distinct variations in electro-optic tuning sensitivity when comparing transverse electric(TE)and transverse magnetic(TM)modes,revealing a polarization-dependent response that paves the way f.r diverse applications in light *** combined optoelectronic and ionotronic capabilities of.two-terminal CCPS devices present extensive opportunities across several *** potential applications range f.om phased arrays and optical switching to their use in environmental sensing and metrology,optical imaging systems,and neuromorphic systems in light-sensitive artif.cial synapses.

关键词： tuning polarization ref.active

Insulin therapy in type 2 diabetes: Insights into clinical ef.icacy, patient-reported outcomes, and adherence challenges

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World Journal of.Diabetes 2024年第5期15卷 828-852页

作者： mahmoud Emad-Eldin Gehan f.Balata Eman A Elshorbagy Mona S Hamed Mohamed S Attia Department of.Pharmacy Practice Faculty of PharmacyZagazig UniversityZagazig HFQM+872Al-Sharqia GovernorateEgypt Department of.Pharmacy Practice Faculty of PharmacyHeliopolis UniversityCairo 44519Egypt Department of.Pharmaceutics Faculty of PharmacyZagazig UniversityZagazig 44519Al-Sharqia GovernorateEgypt Department of.Internal Medicine Faculty of MedicineZagazig UniversityZagazig 44519Al-Sharqia GovernorateEgypt Department of.Community at f.culty of.Medicine Zagazig UniversityZagazig 44519Al-Sharqia GovernorateEgypt

Insulin therapy plays a crucial role in the management of.type 2 diabetes as the disease *** the past century,insulin f.rmulations have undergone signif.cant modif.cations and bioengineering,resulting in a diverse range of.available insulin *** products show distinct pharmacokinetic and pharmacodynamic ***,various insulin regimens have em-erged f.r the management of.type 2 diabetes,including premixed f.rmulations and combinations of.basal and bolus *** utilization of.dif.erent insulin regimens yields disparate clinical outcomes,adverse events,and,notably,patient-reported outcomes(PROs).PROs provide valuable insights f.om the patient’s perspective,serving as a valuable mine of.inf.rmation f.r enhancing healthcare and inf.rming clinical *** to insulin therapy,a critical patient-reported outcome,signif.cantly af.ects clinical outcomes and is inf.uenced by multiple *** review provides insights into the clinical ef.ectiveness of.various insulin preparations,PROs,and f.ctors impacting insulin therapy adherence,with the aim of.enhancing healthcare practices and inf.rming clinical decisions f.r individuals with type 2 diabetes.

关键词： Adherence Diabetes Insulin Patient-reported outcomes Pharmacokinetic Pharmacodynamic

Microstructure and impact behavior of.Mg-4Al-5RE-xGd cast magnesium alloys

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Journal of.Magnesium and Alloys 2024年第5期12卷 1799-1814页

作者： Jie Wei Qudong Wang Huisheng Cai mahmoud Ebrahimi Chuan Lei National Engineering Research Center of.Light Alloy Net f.rming and Key State Laboratory of.Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China

This work investigated the microstructure and impact behavior of.Mg-4Al-5RE-xGd(RE represents La-Ce mischmetal;x=0,0.2,0.7 wt.%)alloys cast by high-pressure die casting(HPDC),permanent mold casting(PMC),and sand casting(SC)*** results indicated that with increasing Gd content,the grain sizes of.the HPDC alloy had a slight change,but the grains of.the PMC and SC alloys were signif.cantly ***,the acicular Al_(11)RE_(3)phase was modif.ed into the short-rod shape under the three casting *** impact toughness of.the studied alloy was mainly dominated by the absorbed energy during the crack *** increasing Gd content,the impact toughness of.the studied alloy monotonically increased due to the lower tendency of.the modif.ed second phase toward crack *** impact stress was higher than the tensile stress,exhibiting a strain rate sensitivity f.r the mechanical response;however,the HPDC alloy had an inconsistent strain rate sensitivity during the impact event due to the transf.rmation of.the def.rmation mechanism f.om twinning to slip with increasing *** dimples covered the f.acture surf.ce of.the f.ne-grained HPDC alloys,indicating a typical ductile ***,due to the def.cient{1012}twinning activity and the suppressed grain boundary sliding during the impact event,the HPDC alloys showed insuf.icient plastic def.rmation capacity.

关键词： Mg-Al-RE alloy Gadolinium Microstructure Impact behavior

Novel Sustainable Cellulose Acetate Based Biosensor f.r Glucose Detection

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Journal of.Renewable Materials 2024年第2期12卷 369-380页

作者： M.f.Elkady E.M.El-Sayed mahmoud Samy Omneya A.Koriem H.Shokry Hassan Chemical and Petrochemical Engineering Department Egypt-Japan University of Science and TechnologyNew Borg El-ArabAlexandriaEgypt f.brication Technology Research Department Advanced Technology and New Materials Research InstituteCity of Scientific Research and Technological Applications(SRTA-City)New Borg El-ArabAlexandria21934Egypt Department of.Public Works Engineering Faculty of EngineeringMansoura UniversityMansoura35516Egypt Environmental Engineering Department Egypt-Japan University of Science and TechnologyNew Borg El-ArabAlexandriaEgypt Electronic Materials Research Department Advanced Technology and NewMaterials Research InstituteCity of Scientific Research and Technological Applications(SRTA-City)New Borg El-ArabAlexandria21934Egypt

In this study,green zinc oxide(ZnO)/polypyrrole(Ppy)/cellulose acetate(CA)f.lm has been synthesized via solvent *** f.lm was used as supporting material f.r glucose oxidase(GOx)to sensitize a glucose *** nanoparticles have been prepared via the green route using olive leaves extract as a ***/Ppy nanocomposite has been synthesized by a simple in-situ chemical oxidative polymerization of.pyrrole(Py)monomer using f.rric chloride(f.Cl3)as an oxidizing *** produced materials and the composite f.lms were characterized using X-ray dif.raction analysis(XRD),scanning electron microscope(SEM),f.urier transf.rm inf.ared(f.IR)and thermogravimetric analysis(TGA).Glucose oxidase was successf.lly immobilized on the surf.ce of.the prepared f.lm and then ZnO/Ppy/CA/GOx composite was sputtered with platinum electrode f.r the current determination at dif.erent initial concentrations of.*** measurements proved the suitability and the high sensitivity of.the constructed biosensor f.r the detection of.glucose levels in dif.erent *** perf.rmance of.the prepared biosensor has been assessed by measuring and comparing glucose concentrations up to 800 *** results af.irmed the reliability of.the developed biosensor towards real samples which suggests the wide-scale application of.the proposed biosensor.

关键词： Biosensors composite f.lms glucose polypyrrole green ZnO cellulose acetate

Nondestructive and active interrogation system f.r special nuclear material:proof.of.principle and initial results

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Nuclear Science and Techniques 2024年第5期35卷 216-225页

作者： mahmoud Bakr Kai Masuda Yoshiyuki Takahashi Tsuyoshi Misawa Norio Yamakawa Tomas Scott Institute of.Advanced Energy Kyoto UniversityGokashoUjiKyoto 611‑0011Japan School of.Physics University of BristolBs81TL Tyndall AvenueBristolUK Physics Department Faculty of ScienceAssiut UniversityAssiut 71516Egypt Research Reactor Institute Kyoto University2 Asashiro‑NishiKumatoriOsaka 590‑0494Japan Pony Industry Co.Ltd. 2‑3‑6 Kitakyuhoji‑MachiChuo‑KuOsaka 541‑0057Japan Astral Neutronics LTD Unit H5HallenBristol BS107SBUK

Herein,we employ the threshold energy neutron analysis(TENA)technique to introduce the world's f.rst active interrogation system to detect special nuclear materials(SNMs),including U-235 and *** system utilizes a DD neutron generator based on inertial electrostatic conf.nement(IEC)to interrogate suspicious *** detect secondary neutrons produced during f.ssion reactions induced in SNMs,a tensioned metastable f.uid detector(TMf.)is *** current status of.the system's development is reported in this paper,accompanied by the results f.om experiments conducted to detect 10 g of.highly enriched uranium(HEU).Notably,the experimental f.ndings demonstrate a distinct dif.erence in the count rates of.measurements with and without *** dif.erence in count rates surpasses two times the standard deviation,indicating a conf.dence level of.more than 96% f.r identif.ing the presence of.*** paper presents and extensively discusses the proof.of.principle experimental results,along with the system's planned trajectory.

关键词： Special nuclear materials Uranium detection Inertial electrostatic conf.nement f.sion TENA HEU CTMf.

Perception beyond sight:Investigating the cognitive maps of.congenitally blind individuals in urban environments

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f.ontiers of.Architectural Research 2024年第4期13卷 809-821页

作者： Anwar Ibrahim Hikmat HAli Zainab mahmoud College of.Architecture and Design Jordan University of Science and TechnologyIrbidJordan College of.Engineering and Architecture Al Yamamah UniversityRiyadhKSA

This study explores the challenges f.ced by congenitally blind individuals in navigating urban ***,this research investigates the f.ctors that contribute to the construction of.city mental mapping f.r individuals who are born ***-one congenitally blind individuals f.om the University of.Jordan were asked to def.ne and describe specif.c elements of.the city based on their personal experiences and ***,participants were guided through two urban paths:f.miliar and *** participants were asked to complete a survey regarding their experiences during the *** collected data was analyzed by using thematic *** results revealed that congenitally blind individuals construct their mental image of.the city by using their three senses of.touching,hearing,and smelling,as well as their saf.ty and *** mental image consists of.f.ve key elements:links,ref.rence points,areas,separators,and *** the small size of.the study sample and the specif.city of.the context,the results of.this study will tremendously help planners in designing highly inclusive urban *** characteristics that can be recognized by the blinds will enhance their accessibility of.urban spaces,encourage independent mobility,increase the quality of.lif. and social inclusion f.r them.

关键词： Mental map City image Congenital blind Cognitive mapping Environmental perception

Network traf.ic classif.cation:Techniques,datasets,and challenges

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Digital Communications and Networks 2024年第3期10卷 676-692页

作者： Ahmad Azab mahmoud Khasawneh Saed Alrabaee Kim-Kwang Raymond Choo Maysa Sarsour College of.Inf.rmation Technology and Systems Victorian Institute of TechnologyAustralia College of.Engineering Al Ain UniversityAbu DhabiUnited Arab Emirates Inf.rmation Systems and Security College of ITUnited Arab Emirates UniversityAl Ain15551United Arab Emirates Department of.Inf.rmation Systems and Cyber Security University of Texas at San AntonioSan AntonioTX78260USA School of.Photovoltaic and Renewable Energy Engineering University of New South WalesSydneyNSW2052Australia

In network traf.ic classif.cation,it is important to understand the correlation between network traf.ic and its causal application,protocol,or service group,f.r example,in f.cilitating lawf.l interception,ensuring the quality of.service,preventing application choke points,and f.cilitating malicious behavior *** this paper,we review existing network classif.cation techniques,such as port-based identif.cation and those based on deep packet inspection,statistical f.atures in conjunction with machine learning,and deep learning *** also explain the implementations,advantages,and limitations associated with these *** review also extends to publicly available datasets used in the ***,we discuss existing and emerging challenges,as well as f.ture research directions.

关键词： Network classif.cation Machine learning Deep learning Deep packet inspection Traf.ic monitoring

A Hybrid Cybersecurity Algorithm f.r Digital Image Transmission over Advanced Communication Channel Models

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Computers, Materials & Continua 2024年第4期79卷 201-241页

作者： Naglaa f.Soliman f.tma E.f.dl-Allah Walid El-Shaf.i mahmoud I.Aly Maali Alabdulhaf.th f.thi E.Abd El-Samie Department of.Inf.rmation Technology College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of.Electronics and Communications Faculty of EngineeringZagazig UniversityZagazig44519Egypt Security Engineering Lab Computer Science DepartmentPrince Sultan UniversityRiyadh11586Saudi Arabia Department of.Electronics and Electrical Communications Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt

The ef.icient transmission of.images,which plays a large role inwireless communication systems,poses a signif.cant challenge in the growth of.multimedia ***-quality images require well-tuned communication *** Single Carrier f.equency Division Multiple Access(SC-f.MA)is adopted f.r broadband wireless communications,because of.its low sensitivity to carrier f.equency of.sets and low Peak-to-Average Power Ratio(PAPR).Data transmission through open-channel networks requires much concentration on security,reliability,and *** data need a space away f.omunauthorized access,modif.cation,or *** requirements are to be f.lf.lled by digital image watermarking and *** paper ismainly concerned with secure image communication over the wireless SC-f.MA systemas an adopted communication *** introduces a robust image communication f.amework over SC-f.MA that comprises digital image watermarking and encryption to improve image security,while maintaining a high-quality reconstruction of.images at the receiver *** proposed f.amework allows image watermarking based on the Discrete Cosine Transf.rm(DCT)merged with the Singular Value Decomposition(SVD)in the so-called DCT-SVD *** addition,image encryption is implemented based on chaos and DNA *** encrypted watermarked images are then transmitted through the wireless SC-f.MA *** linearMinimumMean Square Error(MMSE)equalizer is investigated in this paper to mitigate the ef.ect of.channel f.ding and noise on the transmitted *** subcarrier mapping schemes,namely localized and interleaved schemes,are compared in this *** study depends on dif.erent channelmodels,namely PedestrianAandVehicularA,with a modulation technique namedQuadratureAmplitude Modulation(QAM).Extensive simulation experiments are conducted and introduced in this paper f.r ef.icient transmission of.encrypted watermarked *** addition,dif.erent variants of.SC-f.MA bas

关键词： Cybersecurity applications image transmission channel models modulation techniques watermarking and encryption

Hybrid Model of.Power Transf.rmer f.ult Classif.cation Using C-set and Mf.M – MCSVM

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CSEE Journal of.Power and Energy Systems 2024年第2期10卷 672-685页

作者： Ali Abdo Hongshun Liu Yousif.mahmoud Hongru Zhang Ying Sun Qingquan Li Jian Guo Shandong Provincial Key Laboratory of.UHV Transmission Technology and Equipment School of Electrical EngineeringShandong UniversityJinan 250061China

This paper aims to increase the diagnosis accuracy of.the f.ult classif.cation of.power transf.rmers by introducing a new of.-line hybrid model based on a combination subset of.the et method(C-set)&modif.ed f.zzy C-mean algorithm(Mf.M)and the optimizable multiclass-SVM(MCSVM).The innovation in this paper is shown in terms of.solving the predicaments of.outliers,boundary proportion,and unequal data existing in both traditional and intelligence *** into consideration the closeness of.dissolved gas analysis(DGA)data,the C-set method is implemented to subset the DGA data samples based on their type of.f.ults within unrepeated ***,the Mf.M is used f.r removing outliers f.om DGA samples by combining highly similar data f.r every subset within the same cluster to obtain the optimized training data(OTD)*** is also used to minimize dimensionality of.DGA samples and the uncertainty of.transf.rmer condition *** that,the optimized MCSVM is trained by using the(OTD).The proposed model diagnosis accuracy is 93.3%.The obtained results indicate that our model signif.cantly improves the f.ult identif.cation accuracy in power transf.rmers when compared with other conventional and intelligence models.

关键词： Combination subset of.set(C-set)method modif.ed f.zzy C-means(Mf.M) optimizable multiclass-SVM(MCSVM) optimized training data(OTD)