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A Fully Adaptive Active Queue Management Method for Congestion Prevention at the Router Buffer

Computers, Materials & Continua 2023年第11期77卷 1679-1698页

作者： Ali Alshahrani Ahmad Adel Abu-Shareha Qusai y.Shambour Basil Al-Kasasbeh Faculty of Computer Studies Arab Open UniversityRiyadh11681Saudi Arabia Faculty of Information technology Al-Ahliyya Amman UniversityAmman19111Jordan

Active queue management(AQM)methods manage the queued packets at the router buffer,prevent buffer congestion,and stabilize the network *** bursty nature of the traffic passing by the network routers and the slake behavior of the existing AQM methods leads to unnecessary packet *** paper proposes a fully adaptive active queue management(AAQM)method to maintain stable network performance,avoid congestion and packet loss,and eliminate unnecessary packet *** proposed AAQM method is based on load and queue length indicators and uses an adaptive mechanism to adjust the dropping probability based on the buffer *** proposed AAQM method adapts to single and multiclass traffic *** simulation results over two types of traffic showed that the proposed method achieved the best results compared to the existing methods,including Random Early Detection(RED),BLUE,Effective RED(ERED),Fuzzy RED(FRED),Fuzzy Gentle RED(FGRED),and Fuzzy BLUE(FBLUE).the proposed and compared methods achieved similar results with low or moderate traffic ***,under high traffic load,the proposed AAQM method achieved the best rate of zero loss,similar to BLUE,compared to 0.01 for RED,0.27 for ERED,0.04 for FRED,0.12 for FGRED,and 0.44 for *** throughput,the proposed AAQM method achieved the highest rate of 0.54,surpassing the BLUE method’s throughput of *** delay,the proposed AAQM method achieved the second-best delay of 28.51,while the BLUE method achieved the best delay of 13.18;however,the BLUE results are insufficient because of the low ***,the proposed AAQM method outperformed the compared methods with its superior throughput and acceptable delay.

关键词： Active queue management dropping rate delay loss performance measures

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Introduction to the Special Issue on Numerical Methods for Differential and Integral Equations

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Computer Modeling in Engineering & Sciences 2020年第6期123卷 913-915页

作者： Şuayip yüzbaşı Kamel Al-Khaled Nurcan BaykuşSavaşaneril Devendra Kumar Department of Mathematics Faculty of ScienceAkdeniz UniversityAntalyaTr-07058Turkey Department of Mathematics and Statistics Jordan University of Science and TechnologyIrbid22110Jordan Izmir Vocational School Dokuz Eylül UniversityİzmirTurkey Department of Mathematics University of RajasthanJaipur302004India

Differential and integral equations have a major role in many applied areas of science and engineering,For example,physics,chemistry,astronomy,biology,mechanics,electronic,economics,potential theory,***,the obtaining of solutions of these equations is *** the mentioned equations are usually difficult to solve analytically,numerical methods are ***,this Special Issue contributes to new numerical methods for solving the above-mentioned equations and thus,many problems in science and engineering can be solved using new numerical methods analyzed in this special issue.

关键词： mentioned equations Issue

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行政裁量行为的合理性审查研究

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北京理工大学学报（社会科学版） 2018年第6期20卷 147-152页

作者：王东伟江汉大学法学院湖北武汉430056

2014年修订的《行政诉讼法》增加了行政行为"明显不当"的审查标准,与原有的"滥用职权"共同构成了对行政裁量行为的合理性审查标准。在现行审查标准体系下,"滥用职权"主要适用于审查行政机关具有主观恶性的行政行为,而"明显不当"主要适... 详细信息

2014年修订的《行政诉讼法》增加了行政行为"明显不当"的审查标准,与原有的"滥用职权"共同构成了对行政裁量行为的合理性审查标准。在现行审查标准体系下,"滥用职权"主要适用于审查行政机关具有主观恶性的行政行为,而"明显不当"主要适用于审查未考虑相关因素或违反一般法律原则等的行政行为。在司法实践中存在"明显不当"标准与其他审查标准混用、"明显不当"的具体判断标准难以法定化、客观化等问题。中国对行政裁量行为合理性审查制度的重构,应当在明确行政裁量行为范围的基础上,将"明显不当"的审查标准客观化、法定化,并将"滥用职权"和"明显不当"标准与其他审查标准区分开来。

关键词：行政裁量行为行政合法性行政合理性滥用职权合理性审查

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StUDy ON tHE EFFECtS OF BREAKAGE OF SIngLE FIBER ON CREEP BEHAVIOR OF FIBER REINFORCED COMPOSItES

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Acta Metallurgica Sinica(English Letters) 2004年第4期17卷 498-502页

作者： X.J.Shao y.P.Jiang Z.F.yue School of Mechanics Civil Engineering and Architecture Northwestern Polytechnical University Xi'an710072 ChinaSchool of Mechanics Civil Engineering and Architecture Northwestern Polytechnical University Xi'an710072 ChinaSchool of Mechanics Civil Engineering and Architecture Northwestern Polytechnical University Xi'an710072 China

A 3-D micro cell model with multi-fibers has been presented to study the effects of breakage of single fiber on the whole creep behavior of fiber reinforced composites by finite element method (FEM). Before the fiber breakage, the stresses of all fibers are identical. With the creep time increasing, stress in fiber increases but stress in matrix decreases. It is assumed that the fiber breakage occurs when the stress in fiber reaches a critical value. the stress redistribution resulted from the breakage of fiber has been obtained. the influence on the axial stress of the broken fiber is local. the stress in the all fiber sections is not uniform. there is a local stress concentration in the matrix. And this stress concentration in the matrix is more and more serious with the creep deformation. the stress transference of the loading due to the fiber breakage has been studies numerically. It is found that the fibers near to the broken fiber will take over more loading.

关键词： fiber reinforced composites breakage of fiber stress redistribution loading transference

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Numerical simulations of morphological changes in barrier islands induced by storm surges and waves using a supercritical flow model

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Frontiers of Structural and Civil Engineering 2014年第1期8卷 57-68页

作者： Soumendra Nath KUIRy yan DIng Sam S y WAng Environmental & Water Resources Engineering Division Department of Civil Engineering lndian Institute of Technology Madras Tamil Nadu 600036 India National Center for Computational Hydroscienee and Engineering The University of Mississippi University MS 38677 USA

In this paper, an advanced explicit finite volume flow model in two-dimensions is presented for simulating supercritical coastal flows and morphological changes in a tidal/coastal inlet and barrier islands due to storm surges and waves. this flow mode/ is coupled with existing wave-action mode/and sediment transport mode/. the resulting integrated coastal process model is capable of simulating flows induced by extreme conditions such as waves, surge tides, river flood flows, etc., and morphological changes induced by rapid coastal currents and waves. this developed supercritical ftow model is based on the solution of the conservative form of the nonlinear shallow water equations with the effects of the Coriolis force, uneven bathymetry, wind stress, and wave radiation stresses. the forward Euler scheme is used for the unsteady term; and the convective term is discretized using the Godunov-type shock- capturing scheme along with the HLL Riemann solver on non-uniform rectilinear grids. the accuracy of the developed model is investigated by solving an experimental dam-break test case. Barrier island breaching, overflow and overwash due to severe storm attack are simulated and the predicted morphological changes associated to the events are analyzed to investigate the applicability of the model in a coast where all the physical forces are present.

关键词： coastal inlet coastal process modeling supercritical flow sediment transport barrier islands

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Summary

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Chinese Physics C 2009年第12期33卷 1230-1232页

作者： t.-S. H. Lee Physics Division Argonne National Laboratory Argonne IL 60439 USA Excited Baryon Analysis Center (EBAC) Thomas Jefferson National Accelerator Facility Newport News VA 23606 USA

A summary of the contributions to this workshop is given. the status and future development of N＊ physics are discussed.

关键词： PWA resonance

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tHE CREEP AND FRACtURE BEHAVIOR OF tWO NICKEL-BASED SUPERALLOyS

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Acta Metallurgica Sinica(English Letters) 1998年第6期11卷 425-428页

作者： S.H.Ai y.B.Xia J.F.tian Inst of Metal Research Chinese Acad of Sciences Shenyang China

the creep and fracture behavior of the cast K417 and forged GH4049 nickel-based superalloys were investigated in the temperature range of 700-900℃ C. Within the ranges of stress and temperature studied, the steady state creep rates exhibited a power law relationship with the applied stress and temperature. the time to rupture is inversely proportional to the steady state creep rate. Under all testing conditions, the creep fracture process was mainly controled by crack initiation and growth of the intergranular oxidation. Casting porosities, pores and carbides were also prefecentral locations of creep crack initiation in the cast K417 alloy. In addition, the intergranular fracture feature in the forged GH4049 alloy was apparently associated with the formation and coalescence of the cavitations on the grain boundaries.

关键词： superalloy creep rate fracture

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Sympathetic stimulation with norepinephrine may come at a cost

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Neural Regeneration Research 2019年第6期14卷 977-978页

作者： Lakshini y.Herat Markus P.Schlaich Vance B.Matthews Dobney Hypertension Centre School of Biomedical Science-Royal Perth Hospital UnitUniversity of Western Australia Dobney Hypertension Centre School of Medicine - Royal Perth Hospital UnitUniversity of Western Australia Department of Cardiology and Department of Nephrology Royal Perth Hospital

Norepinephrine(NE;also known as noradrenaline)is the body’s primary adrenergic neurotransmitter which belongs to the catecholamine *** has pharmacologic effects on theα1(Suita et al.,2015),α2(Schwartz,1997),β1,β2 andβ3(tsukada et al.,2003)*** the brain,norepinephrine increases arousal and alertness,promotes vigilance,enhances formation and retrieval of memory,and focuses *** also increases restlessness and *** the remainder of the body,norepinephrine increases heart rate and blood pressure,triggers the release of glucose from energy stores,increases blood flow to skeletal muscle and increases muscle contraction,reduces blood flow to the gastrointestinal system and its motility and lastly,inhibits voiding of the bladder(Goldstein,2010).this last point is particularly interesting in the context of this perspective piece.

关键词： neurotransmitter norepinephrine increases focuses attention

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two New triterpenoid Saponins from Aster Lingulatus

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Chinese Chemical Letters 1996年第11期7卷 1005-1008页

作者： Hu, B Shao, y Qin, GW Ho, Ct Chin, CK Rosen, Rt ACAD SINICA SHANGHAI INST MAT MEDSHANGHAI 200031PEOPLES R CHINA RUtGERS StAtE UNIV COOK COLLNEW BRUNSWICKNJ 08903

two new saponins named asterlingulatosides A and B were isolated from the whole plants of Aster lingulatus. their structures were elucidated by spectral and chemical evidence as 3-O-beta-D-glucopyranosyl-3 beta, 16 alpha-dihydroxyolean-12-en-28-oic acid -28-O-alpha-L-arabinopyranoside and 3-O-beta-D-glucopyranosyl-3 beta,16 alpha-dihydroxyolean-12-en-28-oic acid -28-O-alpha-L-rhamnopyranosyl-(1-->2)- alpha-L-arabinopyranoside respectively. they showed inhibitory activity on DNA synthesis of human leukemia HL-60 cells.

关键词： Lingulatus two New triterpenoid Saponins from Aster

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Non‐chromate conversion process for zinc coating with durable hydrophobicity and enhanced corrosion resistance

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Biosurface and Biotribology 2022年第3期8卷 266-277页

作者： J.y.Chen Z.y.Hu Z.X.Li X.L.Wang C.D.Gu J.P.tu School of Materials Science and Engineering State Key Laboratory of Silicon MaterialsZhejiang UniversityHangzhouChina Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province HangzhouChina Zhejiang Ecological and Environmental Monitoring Center HangzhouChina Zhejiang Key Laboratory of Ecological and Environmental Monitoring Forewarning and Quality ControlHangzhouChina

A Zn‐based coating with durable hydrophobicity and good corrosion resistance was formed on a mild steel substrate,which involves electroplating Zn from a non‐aqueous electrolyte,followed by passivation in an oleic acid(OA)*** electrodeposited Zn coatings were porous,which facilitated the formation of a chemical conversion layer of Zn oleate(ZO)during OA *** Zn coating after passivation had a twolayer structure,which included an outer layer of ZO with a thickness of~26μm and an inner layer of Zn with a thickness of~6μ*** outer layer ZO is a type of metal soap with a smooth surface and durable hydrophobicity,such that water droplets can easily slip off its *** testing and electrochemical measurements in 3.5 wt.%NaCl aqueous solution indicate that the Zn coating after OA passivation exhibits outstanding anti‐corrosion properties compared with those exhibited by pure Zn *** corrosion products and mechanism of the two‐layer coating were *** study shows that smooth metal oleate coatings can provide hydrophobicity and corrosion resistance simultaneously to mild steel substrates.

关键词： Anti‐corrosion Electrodeposition Hydrophobic coating Passivation Zn oleate

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