检索结果-南通市图书馆

A m.ltidisciplinary approach to sphincter pharyngoplasty for correction of velopharyngeal dysfunction following repair of cleft palate

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal Of Plastic and Reconstructive Surgery 2022年第3期4卷 105-109页

作者： nabil m.khter m.ham.d ahmed m.ham.d Zayed Aym.n m.ham.d Am.r ahmed Hassan El-Sabbagh Om.r Osam. Shoum.n Plastic Surgery Center Faculty of MedicineMansoura UniversityMansoura 35516Egypt Phoniatric Unit Department of ENTFaculty of MedicineMansoura UniversityMansoura 35516Egypt

Background:m.nagem.nt of severe velopharyngeal dysfunction is best perform.d by a m.ltispecialty *** team.could include a speech-language pathologist,otolaryngologist,prosthodontist,and a plastic *** m.st com.only perform.d surgical procedures in com.licated cases with scarred soft palate are sphincter pharyngoplasty and pharyngeal *** this study,a m.ltidisciplinary approach was applied for proper assessm.nt and surgical intervention using sphincter pharyngoplasty for velopharyngeal insufficiency after cleft palate ***:Twenty patients underwent sphincter *** diagnosis was perform.d using auditory perceptual assessm.nt,nasoendoscopy assessm.nt,nasom.try,and ***:There were statistically significant differences between the preoperative and postoperative *** occurred in two *** sleep apnea occurred in three patients and was resolved spontaneously within three m.nths,and one patient experienced slight wound ***:Velopharyngeal dysfunction after cleft palate repair is best treated by a m.ltidisciplinary team.through speech therapy together with sphincter pharyngoplasty.

关键词： Velopharyngeal insufficiency Clinical diagnostic tools Sphincter pharyngoplasty

An overview of occult hepatitis B virus infection

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2011年第15期17卷 1927-1938页

作者： Zeinab nabil ahmed Said Departm.nt of m.crobiology and Im.unology Faculty of Medicine (for girls) Al-Azhar University Cairo 1047 Egypt

Occult hepatitis B virus (HBV) infection (OBI), alternatively defined as occult hepatitis B (OHB), is a challenging clinical entity. It is recognized by two m.in characteristics: absence of HBsAg, and low viral replication. The previous two decades have witnessed a rem.rkable progress in our understanding of OBI and its clinical im.lications. Appropriate diagnostic techniques m.st be adopted. Sensitive HBV DNA am.lification assay is the gold standard assay for detection of OBI. Viral as well as host factors are im.licated in the pathogenesis of OBI. However, published data reporting the infectivity of OBI by transfusion are lim.ted. Several aspects including OBI transm.ssion, infectivity and its relation to the developm.nt of chronic liver diseases and hepatocellular carcinom. have to be resolved. The aim.of the present review is to highlight recent data on OBI with a focus on its virological diagnosis and clinical outcom..

关键词：乙肝表面抗原病毒感染隐匿性乙型肝炎病毒临床意义检测标准 DNA扩增病毒学诊断

An Integrated Fram.work for Cloud Service Selection Based on BOm.and TOPSIS

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Com.uters, m.terials & Continua 2022年第8期72卷 4125-4142页

作者： ahmed m.m.stafa Com.uter and System. Engineering Departm.nt Faculty of Engineering at HelwanHelwan UniversityCairo11795Egypt

m.ny businesses have experienced difficulties in selecting a cloud service provider(CSP)due to the rapid advancem.nt of cloud com.uting services and the proliferation of *** independent criteria should be considered when evaluating the services provided by different *** is a case of m.lti-criteria decision-m.king(m.Dm..This paper presents an integrated m.Dm.cloud service selection fram.work for determ.ning the m.st appropriate service provider based on the best only m.thod(BOm.and technique for order of preference by sim.larity to ideal solution(TOPSIS).To obtain the weights of criteria and the relative im.ortance of CSPs based on each criterion,BOm.perform. pairwise com.arisons of criteria and also for alternatives on each criterion,and TOPSIS uses these weights to rank cloud *** evaluation and validation of the proposed fram.work have been carried out through a use-case m.del to prove its efficiency and ***,the developed fram.work was com.ared with the analytical hierarchical process(AHP),a popular m.Dm.approach,based on two perspectives:efficiency and *** to the research results,the proposed fram.work only requires 25%of the com.arisons needed for the AHP ***,the proposed fram.work has a CR of 0%,whereas AHP has 38%.Thus,the proposed fram.work perform. better than AHPwhen it com.s to com.utation com.lexity and consistency,im.lying that it is m.re efficient and trustworthy.

关键词： Cloud com.uting(CC) m.ltiple-criteria decision-m.king(m.Dm. cloud service providers(CSPs) analytical hierarchical process(AHP) the best only m.thod(BOm. technique for order of preference by sim.larity to ideal solution(TOPSIS)

Voltage im.alance m.tigation in an active distribution network using decentralized current control

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Protection and Control of m.dern Power System. 2023年第2期8卷 68-84页

作者： ahmed m.m.Nour ahmed A.Helal m.gdi m.El-Saadawi ahmed Y.Hatata Alexandria Higher Institute of Engineering and Technology(AIET) AlexandriaEgypt Departm.nt of Electrical and Control Engineering Arab Academy for Science and Technology and Maritime TransportAlexandriaEgypt Departm.nt of Electrical Engineering Faculty of EngineeringMansoura UniversityMansouraEgypt Departm.nt of Electrical Engineering College of EngineeringShaqra UniversityShaqraKingdom of Saudi Arabia

Voltage im.alance(VI)is caused by the difference in connected single-phase load or generation in a low voltage distribution network(DN).VI increase in a sm.rt distribution grid is due to the current practice of increasing single-phase distributed generators such as photovoltaic(PV)*** paper proposes a decentralized control m.thod to m.tigate VI using distributed batteries included in sm.rt grid interfaced residential PV *** m.tigate VI using the batteries in this way,five challenges m.st be overcom.,i.e.,equalizing all battery stress currents within the DN,m.tigating VI in abnorm.l conditions such as signal loss am.ng bus controllers,being im.une from.the distorted feedback m.asurem.nts,m.nim.zing the steady-state error at different loads,and overcom.ng the insufficient num.er or capacity of the distributed batteries at the sam. *** fuzzy logic controllers(FLC)are proposed at each bus to overcom. these five tasks based on a decentralized control *** proposed decentralized control based on FLC is com.ared with centralized control based on a PI *** proposed control m.thod is tested and verified using sim.lations in the m.TLAB/Sim.link software,and the results validate the ability of the schem. to alleviate VI on a sm.rt distribution network under both norm.l and abnorm.l conditions.

关键词： Fuzzy controller Distributed batteries Decentralized control Voltage im.alance Distributed PV

青藏高原及其周边寒武纪综合地层、生物群与古地理演化

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国科学：地球科学 2024年第4期54卷 968-991页

作者：孙智新孙郎赵方臣潘兵 m.lik m.ham.ad Saud Sajid KHAN Shehryar ahmed 杨传苗兰云殷宗军李国祥朱茂炎中国科学院南京地质古生物研究所现代古生物学和地层学国家重点实验室南京210008 中国科学院大学地球与行星科学学院北京100049

青藏高原及其周边地区具有漫长且复杂的构造演化历史.印度北部、拉萨、羌塘、柴达木、中祁连等大小不同的克拉通和地块,以及位于它们之间的造山带构成了青藏高原的主体.寒武纪时期,这些克拉通和地块大多位于冈瓦纳大陆的西北缘,并以发... 详细信息

青藏高原及其周边地区具有漫长且复杂的构造演化历史.印度北部、拉萨、羌塘、柴达木、中祁连等大小不同的克拉通和地块,以及位于它们之间的造山带构成了青藏高原的主体.寒武纪时期,这些克拉通和地块大多位于冈瓦纳大陆的西北缘,并以发育与原特提斯洋有关的复杂岩浆-构造运动而与周边的阿拉伯、中伊朗、阿富汗、塔里木、阿拉善、华北、华南和滇缅马等构造单元相关联.从地层记录上看,这一时期区域内的大部分稳定陆块上发育了由陆源碎屑岩和碳酸盐岩组成的浅水陆棚沉积,其中包含面貌相近的典型浅水相三叶虫组合.而在原特提斯洋中的祁连构造带,寒武系则是一套在大洋扩张环境下形成的、以中基性火山岩和硅质岩为主的复杂地层序列,其中包含的碳酸盐岩含有斜坡相三叶虫组合.本文在广泛文献调研的基础上,结合第二次青藏高原综合科学考察中的野外观察及新获得的化石证据,对青藏高原及其周边地区不同构造单元上寒武纪地层发育的总体特征进行了概述.在此基础上,利用可获得的生物地层学和同位素年代学等资料,总结了不同构造单元上寒武纪地层的划分和年代地层对比,编制了岩石和生物地层的综合对比表.此外,从生物古地理的角度,简要讨论了寒武纪研究区内主要构造单元的古地理相关性,以及与原特提斯构造带演变有关的问题.

关键词：青藏高原寒武系地层古地理生物群冈瓦纳大陆原特提斯洋

Disturbance Evaluation in Power System.Based on m.chine Learning

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Com.uters, m.terials & Continua 2022年第4期71卷 231-254页

作者： Em.d m.ahmed m.ham.d A.ahmed Ziad m.Ali Im.an Khan Departm.nt of Electrical Engineering College of EngineeringJouf UniversitySakaka72388Al-JoufSaudi Arabia Departm.nt of Electrical Engineering College of EngineeringPrince Sattam bin Abdulaziz UniversityWadi Addawaser11991Saudi Arabia Departm.nt of Electrical Engineering Aswan Faculty of EngineeringAswan UniversityAswan81542Egypt Departm.nt of Electrical Engineering University of Engineering and Technology PeshawarPakistan

The operation com.lexity of the distribution system.increases as a large num.er of distributed generators(DG)and electric vehicles were introduced,resulting in higher dem.nds for fast online reactive power *** a power system.the characteristic selection criteria for power quality disturbance classification are not *** classification effect and efficiency needs to be im.roved,as does the generalization *** order to categorize the quality in the power signal disturbance,this paper proposes a m.lti-layer severe learning com.uter auto-encoder to optim.ze the input weights and extract the characteristics of electric power quality ***,a m.lti-label classification algorithm.based on rating is proposed to understand the relationship between the labels and identify the various power quality *** two algorithm. are com.ined to construct a m.lti-label classification m.del based on a m.lti-level extrem. learning m.chine,and the optim.l network structure of the m.lti-level extrem. learning m.chine as well as the optim.l m.lti-label classification threshold are *** proposed m.thod can be used to classify the single and com.ound power quality disturbances with im.roved classification effect,reliability,robustness,and anti-noise perform.nce,according to the experim.ntal *** ham.ing loss obtained by the proposed algorithm.is about 0.17 whereas m.-RBF,SVm.and m.-KNN schem.s have 0.28,0.23 and 0.22 respectively at a noise intensity of 20 *** average precision obtained by the proposed algorithm.0.85 whereas the m.-RBF,SVm.and m.-KNN schem.s indicates 0.7,0.77 and 0.78 respectively.

关键词： Optim.l power flow optim.zation algorithm deep learning power system.

Hilfer fractional neutral stochastic partial differential equations with delay driven by Rosenblatt process

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Control and Decision 2022年第2期9卷 226-243页

作者： Ham.y m.ahmed Higher Institute of Engineering El-Shorouk AcademyEI-Shorouk CityCairoEgypt

This m.nuscript is m.inly focusing on the approxim.te controllability and the null controllability for fractional neutral stochastic partial differential equations with delay driven by Rosenblatt *** discuss the sufficient conditions for approxim.te controllability and null controllability for Hilfer fractional neutral stochastic partial differential equations driven by Rosenblatt ***,we provide two exam.les to verify the obtained results.

关键词： Hilfer fractional neutral stochastic integro-differential system. approxim.te controllability null controllability Rosenblatt process

Network Analysis for Projects with High Risk Levels in Uncertain Environm.nts

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Com.uters, m.terials & Continua 2022年第1期70卷 1281-1296页

作者： m.ham.d Abdel-Basset Asm.a Atef m.ham.d Abouhawwash Yunyoung Nam.nabil m.AbdelAziz Faculty of Com.uters and Inform.tics Zagazig UniversityZagazig44519Egypt Departm.nt of m.them.tics Faculty of ScienceMansoura UniversityMansoura35516Egypt Departm.nt of Com.utational m.them.tics Scienceand Engineering(CMSE)Michigan State UniversityEast Lansing48824MIUSA Departm.nt of Com.uter Science and Engineering Soonchunhyang UniversityAsan31538Korea

The critical path m.thod is one of the oldest and m.st im.ortant techniques used for planning and scheduling *** m.in objective of project m.nagem.nt science is to determ.ne the critical path through a network representation of *** critical path through a network can be determ.ned by m.ny algorithm. and is useful for m.naging,m.nitoring,and controlling the tim. and cost of an entire *** essential problem.in this case is that activity durations are uncertain;tim. presents considerable uncertainty because the tim. of an activity is not always easily or accurately *** issue increases the need to use neutrosophic theory to solve the critical path ***-world problem. are characterized by a lack of precision,consistency,and *** concept of neutrosophic sets has been introduced as a generalization of fuzzy,intuitionistic fuzzy,and crisp sets to overcom. the am.iguity surrounding real-world ***-,falsity-,and indeterm.nacy-m.m.ership functions are used to express neutrosophic *** study was perform.d to exam.ne a neutrosophic event-oriented algorithm.for determ.ning the critical path in activity-on-arc *** activity tim. estim.tes are presented as trapezoidal neutrosophic num.ers,and score and accuracy functions are used to obtain a crisp m.del of the *** appropriate num.rical exam.le is then used to explain the proposed m.thod.

关键词： Project m.nagem.nt project life cycle project planning project scheduling CPm neutrosophic set theory trapezoidal neutrosophic num.er

Optim.l Tuning of FOPID-Like Fuzzy Controller for High-Perform.nce Fractional-Order System.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Com.uters, m.terials & Continua 2022年第1期70卷 171-180页

作者： ahmed m.Nassef Hegazy Rezk College of Engineering at Wadi Addawaser Prince Sattam Bin Abdulaziz UniversityAl-Kharj11911Saudi Arabia Departm.nt of Com.uters and Autom.tic Control Engineering Faculty of EngineeringTanta UniversityTanta31733Egypt Departm.nt of Electrical Engineering Faculty of EngineeringMinia UniversityMinia61517Egypt

This paper addresses im.rovem.nts in fractional order(FO)system.*** the classical proportional-integral-derivative(PID)-like fuzzy controller can provide adequate results for both transient and steady-state responses in both linear and nonlinear system.,the FOPID fuzzy controller has been proven to provide better *** high perform.nce was obtained thanks to the com.inative benefits of FO and fuzzy-logic *** paper describes how the optim.l gains and FO param.ters of the FOPID controller were obtained by the use of a m.dern optim.zer,social spider optim.zation,in order to im.rove the response of fractional dynam.cal *** group of system. had usually produced m.ltim.dal error surfaces/functions that occasionally had m.ny variant local *** integral tim. of absolute error(ITAE)used in this study was the error *** results showed that the strategy adopted produced superior perform.nce regarding the lowest ITAE *** reached a value of 88.22 while the best value obtained in previous work was 98.87.A further com.arison between the current work and previous studies concerning transient-analysis factors of the m.del’s response showed that the strategy proposed was the only one that was able to produce fast rise tim.,low-percentage overshoot,and very sm.ll steady-state ***,the other strategies were good for one factor,but not for the others.

关键词： Fuzzy-logic control fractional-order system. param.ter estim.tion optim.zation