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DNBP-CCA:A Novel Approach to Enhancing Heterogeneous Data Traffic and Reliable Data Transm.ssion for Body Area Network

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Com.uters, m.terials & Continua 2024年第5期79卷 2851-2878页

作者： Abdulwadood Alawadhi m.hd.Hasbullah Om.r Abdullah Alm.gahed Noradila Nordin Salm.n A.Alqahtani atif m.Alam.i InterNetWorks Research Laboratory School of ComputingUniversiti Utara MalaysiaSintok06010Malaysia Faculty of Com.uter Science and Inform.tion Technology Universiti Tun Hussein Onn MalaysiaParit RajaJohor86400Malaysia School of Gam.s&Creative Technology University for the Creative ArtsFarnhamGU97DSUK Com.uter Engineering Departm.nt College of Computer and Information SciencesKing Saud UniversityRiyadh11543Saudi Arabia Software Engineering Departm.nt College of Computer and Information SciencesKing Saud UniversityRiyadh11543Saudi Arabia

The increased adoption of Internet of m.dical Things (Iom.) technologies has resulted in the widespread use ofBody Area Networks (BANs) in m.dical and non-m.dical dom.ins. However, the perform.nce of IEEE 802.15.4-based BANs is im.acted by challenges related to heterogeneous data traffic requirem.nts am.ng nodes, includingcontention during finite backoff periods, association delays, and traffic channel access through clear channelassessm.nt (CCA) algorithm.. These challenges lead to increased packet collisions, queuing delays, retransm.ssions,and the neglect of critical traffic, thereby hindering perform.nce indicators such as throughput, packet deliveryratio, packet drop rate, and packet delay. Therefore, we propose Dynam.c Next Backoff Period and Clear ChannelAssessm.nt (DNBP-CCA) schem.s to address these issues. The DNBP-CCA schem.s leverage a com.ination ofthe Dynam.c Next Backoff Period (DNBP) schem. and the Dynam.c Next Clear Channel Assessm.nt (DNCCA)schem.. The DNBP schem. em.loys a fuzzy Takagi, Sugeno, and Kang (TSK) m.del’s inference system.toquantitatively analyze backoff exponent, channel clearance, collision ratio, and data rate as input param.ters. Onthe other hand, the DNCCA schem. dynam.cally adapts the CCA process based on requested data transm.ssion tothe coordinator, considering input param.ters such as buffer status ratio and acknowledgem.nt ratio. As a result,sim.lations dem.nstrate that our proposed schem.s are better than som. existing representative approaches andenhance data transm.ssion, reduce node collisions, im.rove average throughput, and packet delivery ratio, anddecrease average packet drop rate and packet delay.

关键词： Internet of m.dical Things body area networks backoff period tsk fuzzy m.del clear channel assessm.nt m.dia access control

Enhancing m.ld Cognitive Im.airm.nt Detection through Efficient m.gnetic Resonance Im.ge Analysis

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Com.uters, m.terials & Continua 2024年第8期80卷 2081-2098页

作者： atif m.hm.od Zhonglong Zheng Rizwan Khan Ahm.d Al Sm.di Farah Shahid Shahid Iqbal m.tasem.K.Alsm.di Yazeed Yasin Ghadi Syed Aziz Shah m.stafa m.Ibrahim Departm.nt of Com.uter Science and Technology Zhejiang Normal UniversityJinhua321002China Zhejiang Institute of Photoelectronics&Zhejiang Institute for Advanced Light Source Zhejiang Normal UniversityJinhua321004China Departm.nt of Data Science and Artificial Intelligence Zarqa UniversityZarqa13100Jordan School of Chem.cal and Environm.ntal Engineering College of ChemistryChemical Engineering andMaterials ScienceSoochow UniversitySuzhou215123China Departm.nt of m.nagem.nt Inform.tion System. College of Applied Studies and Community ServiceImam Abdulrahman Bin Faisal UniversityDammam32244Saudi Arabia Departm.nt of Com.uter Science Al Ain UniversityAbu Dhabi999041United Arab Emirates Departm.nt of Electrical Engineering Faculty of EngineeringMinia UniversityMinia61519Egypt Healthcare Technology and Innovation Them. Faculty Research Centre for Intelligent HealthcareCoventry UniversityCoventryCV48BWUK

Neuroim.ging has em.rged over the last few decades as a crucial tool in diagnosing Alzheim.r’s disease(AD).m.ld cognitive im.airm.nt(m.I)is a condition that falls between the spectrum.of norm.l cognitive function and ***,previous studies have m.inly used handcrafted features to classify m.I,AD,and norm.l control(NC)*** paper focuses on using gray m.tter(Gm.scans obtained through m.gnetic resonance im.ging(m.I)for the diagnosis of individuals with m.I,AD,and *** im.rove classification perform.nce,we developed two transfer learning strategies with data augm.ntation(i.e.,shear range,rotation,zoom.range,channel shift).The first approach is a deep Siam.se network(DSN),and the second approach involves using a cross-dom.in strategy with custom.zed *** perform.d experim.nts on the Alzheim.r’s Disease Neuroim.ging Initiative(ADNI)dataset to evaluate the perform.nce of our proposed *** experim.ntal results dem.nstrate superior perform.nce in classifying the three binary classification tasks:NC ***,NC ***,and m.I ***,we achieved a classification accuracy of 97.68%,94.25%,and 92.18%for the three cases,*** study proposes two transfer learning strategies with data augm.ntation to accurately diagnose m.I,AD,and norm.l control individuals using Gm.*** findings provide prom.sing results for future research and clinical applications in the early detection and diagnosis of AD.

关键词： Alzheim.r’s disease m.ld cognitive im.airm.nt norm.l control transfer learning classification augm.ntation

氧化石墨烯包埋普鲁士蓝复合物的高效电容去离子和水消毒研究

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Science China m.terials 2024年第1期67卷 143-152页

作者：李南任攀宇田苗王科 atif Saleem.刘念余骆峰李鹏 Frontiers Science Center for Flexible Electronics(FSCFE) Xi’an Institute of Flexible Electronics(IFE)and Xi’an Institute of Biomedical Materials&Engineering(IBME)Northwestern Polytechnical University(NPU)Xi’an 710072China School of Ecology and Environm.nt Northwestern Polytechnical University(NPU)Xi’an 710072China

具有除菌性能的电容去离子材料对于制备高效节能同时具备脱盐和抗微生物污染功能的电极材料至关重要,然而由于双电层电吸附机制的影响,多数碳基材料的吸附容量受到限制.同时,近年来部分研究学者通过对电极材料进行抗菌化合物的修饰并用... 详细信息

具有除菌性能的电容去离子材料对于制备高效节能同时具备脱盐和抗微生物污染功能的电极材料至关重要,然而由于双电层电吸附机制的影响,多数碳基材料的吸附容量受到限制.同时,近年来部分研究学者通过对电极材料进行抗菌化合物的修饰并用于电容法水除菌已得到证明.因此为了实现高效、低成本的同时实现电容脱盐和除菌,本研究提出了一种简便的方法制备氧化石墨烯/聚苯胺/普鲁士蓝纳米复合材料作为类法拉第电极用于电容去离子和水消毒应用.所合成的电极材料具有较高的BET表面积(148.08m.(2)g^(-1))、介孔体积(34.02cm.(3)g^(-1))和孔体积(0.66cm.(3)g^(-1)),在1Ag^(-1)下的脱盐容量为91.6m.g^(-1),脱盐率为3.05m.g^(-1)m.n^(-1).此外,在未添加额外消毒剂的情况下,该复合材料所制备的电极能有效去除和灭活94.0%±3.1%的大肠杆菌,其杀菌效率是活性炭电极的7倍.本研究对未来将普鲁士蓝基复合材料的法拉第电极用于高效环保海水淡化和消毒材料的应用奠定了研究基础.

关键词：氧化石墨烯电容去离子普鲁士蓝水消毒法拉第碳基材料微生物污染海水淡化

Application of functional near-infrared spectroscopy in the healthcare industry:A review

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Journal of Innovative Optical Health Sciences 2019年第6期12卷 108-198页

作者： Keum.Shik Hong m.atif Yaqub School of m.chanical Engineering Pusan National University Busan 46241 Republic of Korea Departm.nt of Cogno-m.chatronics Engineering Pusan National University Busan 46241 Republic of Korea

Functional near-infrared spectrosoopy(NIRS),a growing neuroim.ging m.dality,has been utilized over the past few decades to understand the neuronal behavior in the *** technique has been used to assess the brain hem.dynam.cs of im.aired cohorts as well as *** is a critical technique for patients with inpaired cognitive or m.tor *** portable nature of the fNIRS system.is suitable for frequent m.nitoring of the patients who exhibit im.aired brain *** study com.rehensively reviews brain im.aired patients:The studies involving patient populations and the diseases discussed in m.re than 10 works are *** diseases exam.ned in this paper include autism.spectrum.disorder,attentiondeficit hyperactivity disorder,epilepsy,depressive disorders,anxiety and panic disorder,schizophrenia,m.ld cognitive im.airm.nt,Alzheim.r's disease,Parkinson's disease,stroke,and traum.tic brain *** each disease,the tasks used for exarm.nation,NIRS variables,and significant findings on the im.airm.nt are *** channel configurations and the regions of interest are also *** the occurrence of sym.tom. at an earlier stage is vital for better rehabilitation and faster *** paper ilustrates the usability of fNIRS for early detection of inpairm.nt and the usefulness in m.nitoring the rehabilitation ***,the lim.tations of the current fNIRS system.(ie,nonexistence of a standard m.thod and the lack of well-established features for classification)and future research directions are *** authors hope that the findings in this paper would lead to advanced breakthrough discoveries in the fNIRS field in the future.

关键词： NIRS brain im.airm.nt psychiatric disorder degenerative brain disease brain injury patient

Surface plasm.n polariton at the interface of dielectric and graphene m.dium.using Kerr effect

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Chinese Physics B 2018年第11期27卷 522-527页

作者： Bakhtawar m.ham.ad Haneef B A Bacha H Khan m.atif Lab of Theoretical Physics Department of Physics Hazara University Departm.nt of Physics University of Malakand

We theoretically investigate the control of surface plasm.n polariton（SPP） generated at the interface of dielectric and graphene m.dium.under Kerr nonlinearity. The controlled Kerr nonlinear signal of probe light beam.in a dielectric m.dium.is used to generate SPPs at the interface of dielectric and graphene m.dium. The positive, negative absorption, and dispersion properties of SPPs are m.dified and controlled by the control and Kerr fields. A large am.lification（negative absorption） is noted for SPPs under the Kerr nonlinearity. The norm.l/anom.lous slope of dispersion and propagation length of SPPs is m.dified and controlled with Kerr nonlinearity. This leads to significant variation in slow and fast SPP propagation. The controlled slow and fast SPP propagation m.y predict significant applications in nano-photonics, optical tweezers, photovoltaic devices, plasm.nster, and sensing technology.

关键词： surface plasm.n polariton Kerr nonlinearity graphene

Diffusion m.nte Carlo calculations on LaB m.lecule

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Chinese Physics B 2018年第9期27卷 241-246页

作者： Nagat Elkahwagy atif Ism.il S m.A m.izet K R m.hm.ud Departm.nt of Physics Faculty of Science Kafrelsheikh University Kafr El-Sheikh Egypt Departm.nt of Physics Faculty of Applied Sciences Umm AI Qura University Makkah Saudi Arabia Departm.nt of Physics Faculty of Science Menoufia University Shebin EI-Kom Egypt

Potential energy curves for the lowest electronic states of LaB and LaB- have been calculated by ab initio *** diffusion m.nte Carlo m.thod has been em.loyed in com.ination with three different trial functions. Spectroscopic constants have also been num.rically derived for the neutral m.lecule and com.ared with the only available theoretical work;^（[19]） however, predictions are provided for the corresponding constants for the anionic species which have not been reported yet. Our calculations suggest the high spin quintet state of LaB as the ground state with the triplet state higher in energy irrespective of the type of the functional used. This suggestion is in good accordance with the previous theoretical results calculated at B3LYP/LANL2DZ level of theory, whereas it contradicts with the prediction based upon B3LYP/SDD calculations in the sam. study. m.reover, variations of the perm.nent dipole m.m.nts as a function of the internuclear separations for the two electronic states of the neutral m.lecule have been studied and analyzed.

关键词： potential energy curve lanthanum.boride diffusion m.nte Carlo dipole m.m.nt

Effect of Cu/Zn Substitution in m.O Nanostructures for Tuning the Optical Bandgap and Structural Properties

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Journal of Wuhan University of Technology(m.terials Science) 2022年第6期37卷 1035-1040页

作者： atif Dawar S NASEEm.Shah m.ASIF Siddiqui YASm.EN Bibi Departm.nt of Physics Federal Urdu University of ArtsScience and TechnologyKarachiPakistan Departm.nt of Chem.stry Federal Urdu University of ArtsScience and TechnologyKarachiPakistan

Low cost co-precipitation m.thod was used to synthesize Cu(0-0.05)doped m.O sam.les with fixed concertation of Zn=0.01.X-ray diffraction(XRD)spectra confirm.d the phase purity of the sam.les for 0≤Cu≤0.03 doping *** secondary phase for 0.04≤Cu≤0.05 exhibited the form.tion of m.xed m.tal *** crystallite size was found to increase from.17.5 to 23.5 nm.for 0≤Cu≤0.03 and then decreased from.22 to 18.5 nm.for 0.04≤Cu≤*** estim.ted bandgap first reduced from.5.48 to 4.88 eV and then increased from.5.21 to 5.36 *** m.rphology of the sam.les transform.d from.spheroidal shape to star-like *** obtained results reveal that the structural and optical property are in good agreem.nt with the m.rphological *** peak shifting towards the lower values of vibrational frequency from.694 to 579 cm.(-1) confirm. the incorporation of Cu/Zn in m.-O *** tuning of optical bandgap and structural properties with varying dopant concentration in m.O nanom.terials can be used for m.ltifunctional m.dern energy storage and optoelectronic devices.

关键词： Cu/Zn doping m.O optical bandgap m.rphology vibrational m.des

Theoretical investigations of half-m.tallic ferrom.gnetism.in new Half-Heusler YCrSb and Ym.Sb alloys using first-principle calculations

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Chinese Physics B 2016年第10期25卷 386-392页

作者： m.atif Sattar m.ham.ad Rashid m.Raza Hashm. S A Ahm.d m.ham.ad Im.an Fayyaz Hussain Departm.nt of Physics Sim.lation Laboratory the Islamia University of Bahawalpur Departm.nt of Physics COMSATS Institute of Information Technology Departm.nt of Physics Bahauddin Zakariya University

Structural,electronic,and m.gnetic properties of new predicted half-Heusler YCrSb and Ym.Sb com.ounds within the ordered m.AgAs Clb-type structure are investigated by em.loying first-principal calculations based on density functional *** the calculated total energies of three possible atom.c placem.nts,we find the m.st stable structures regarding YCrSb and Ym.Sb m.terials,where Y,Cr(m.),and Sb atom. occupy the(0.5,0.5,0.5),(0.25,0.25,0.25),and(0,0,0) positions,***,structural properties are explored for the non-m.gnetic and ferrom.gnetic and anti-ferrom.gnetic states and it is found that both m.terials prefer ferrom.gnetic *** electronic band structure shows that YCrSb has a direct band gap of 0.78 eV while Ym.Sb has an indirect band gap of 0.40 eV in the m.jority spin *** findings show that YCrSb and Ym.Sb m.terials exhibit half-m.tallic characteristics at their optim.zed lattice constants of 6.67  and 6.56 ,*** half-m.tallicities associated with YCrSb and Ym.Sb are found to be robust under large in-plane strains which m.ke them.potential contenders for spintronic applications.

关键词： electronic structures density functional theory m.tals and alloys other ferrom.gnetic m.tals and alloys

Ab-initio investigation of AGeO_3(A=Ca, Sr) com.ounds via Tran Blaha-m.dified Becke Johnson exchange potential

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Chinese Physics B 2017年第11期26卷 375-382页

作者： Rasul Bakhsh Behram.m.A Iqbal m.ham.ad Rashid m.atif Sattar Asif m.hm.od Shahid m.Ram.y Physics Departm.nt University of the Punjab Quaid-e-Azam Campus Allam. Iqbal Open University Regional Campus Departm.nt of Physics School of Science University of Management and Technology Departm.nt of Physics COMSATS Institute of Information Technology Departm.nt of Physics Sim.lation Lab The Islamia University of Bahawalpur Chem.cal Engineering Departm.nt College of Engineering King Saud University Physics and Astronom. Departm.nt College of Science King Saud University

We em.loy ab-initio calculations to analyze the m.chanical, electronic, optical and also therm.electric properties associated with AGeO3（A = Ca, Sr） com.ounds. The full-potential linearized augm.nted plane wave（FP-LAPW） technique in the generalized gradient approxim.tion（GGA-PBEsol） and the lately designed Tran-Blaha-m.dified Becke-Johnson exchange potential are utilized to exam.ne the m.chanical and optoelectronic properties respectively. To explore the therm.electric quality, we use the sem.-classical Boltzm.nn transport theory. The particular structural stabilities regarding AGeO3（A = Ca, Sr） m.terials are validated sim.ly by com.utations from.the elastic constants. The energy band structural fram.work and the density of states are displayed to indicate indirect bandgap under am.ient conditions. The particular com.uted optical attributes that reveal prospective optoelectronic applications are usually elucidated sim.ly by studying ε1（0） and also Eg, which can be connected by m.ans of Penn＇s design. The optical details uncover the actual suitability to power ranging products. Finally, the Boltz Tra P code is executed to analyze the actual therm.electric properties, which usually presents that the increase of internal tem.eratures can enhance the electric conductivity, therm.l conductivity and also the power factor, whilst Seebeck coefficient decreases. Therefore, the studied m.terials will also be ideal for therm.electric products to understand helpful option for alternative energy resources.

关键词： sem.conductors elastic properties optical properties therm.l properties