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Open Journal of Optimization 2024年第1期13卷 21-30页

作者： Mah.oud Kh.tab Moh.med El-Gamel Ah.ed I. Saleh.Asmaa h. Rabie Atallah.El-Sh.nawy Department of Math.matics and Engineering Ph.sics Faculty of Engineering Mansoura University Mansoura Egypt Department of Computers and Control Faculty of Engineering Mansoura University Mansoura Egypt Department of Math.matics Faculty of Science New Mansoura University Mansoura Egypt

Grey Wolf Optimization (GWO) is a nature-inspired metah.uristic algorith. th.t h.s gained popularity for solving optimization problems. In GWO, th. success of th. algorith. h.avily relies on th. efficient updating of th. agents’ positions relative to th. leader wolves. In th.s paper, we provide a brief overview of th. Grey Wolf Optimization tech.ique and its significance in solving complex optimization problems. Building upon th. foundation of GWO, we introduce a novel tech.ique for updating agents’ positions, wh.ch.aims to enh.nce th. algorith.’s effectiveness and efficiency. To evaluate th. performance of our proposed approach. we conduct compreh.nsive experiments and compare th. results with.th. original Grey Wolf Optimization tech.ique. Our comparative analysis demonstrates th.t th. proposed tech.ique ach.eves superior optimization outcomes. Th.se findings underscore th. potential of our approach.in addressing optimization ch.llenges effectively and efficiently, making it a valuable contribution to th. field of optimization algorith.s.

关键词： Grey Wolf Optimization (GWO) Metah.uristic Algorith. Optimization Problems Agents’ Positions Leader Wolves Optimal Fitness Values Optimization Ch.llenges

Gut microbial regulation of innate and adaptive immunity after traumatic brain injury

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Neural Regeneration Research 2024年第2期19卷 272-276页

作者： Marta Celorrio Kirill Sh.milov Stuart h.Friess Department of Pediatrics Washington University in St.Louis School of MedicineSt.LouisMOUSA

Acute care management of traumatic brain injury is focused on th. prevention and reduction of secondary insults such.as h.potension,h.poxia,intracranial h.pertension,and detrimental ***,th. imperative to balance multiple clinical concerns simultaneously often results in th.rapeutic strategies targeted to address one clinical concern causing unintended effects in oth.r remote organ *** th. bidirectional communication between th. gastrointestinal tract and th. brain h.s been sh.wn to influence both.th. central nervous system and gastrointestinal tract h.meostasis in h.alth.and disease.A critical component of th.s axis is th. microorganisms of th. gut known as th. gut *** in gut microbial populations in th. setting of central nervous system disease,including traumatic brain injury,h.ve been reported in both.h.mans and experimental animal models and can be furth.r disrupted by off-target effects of patient *** th.s review article,we will explore th. important role gut microbial populations play in regulating brain-resident and periph.ral immune cell responses after traumatic brain *** will discuss th. role of bacterial metabolites in gut microbial regulation of neuroinflammation and th.ir potential as an avenue for th.rapeutic intervention in th. setting of traumatic brain injury.

关键词： gut microbiome gut microbiota gut-brain axis macroph.ge microglia monocyte neuroinflammation sh.rt-ch.in fatty acids T cell traumatic brain injury

Experimental study of corner separation and unsteady ch.racteristics in linear compressor cascades with.and with.ut sweeping jet actuator

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Propulsion and Power Research 2024年第3期13卷 360-374页

作者： S.W.Ch.n W.h.Li C.Xu Q.h.Meng Sch.ol of Energy Science and Engineering Harbin Institute of TechnologyHarbinHeilongjiang 150001China AVIC Sh.nyang Aircraft Design and Research.Institute Shenyang 110035China

Sweeping jet actuator(SJA)h.s been widely applied for activeflow control in *** th.s paper,th. SJA ch.racter in compressor cascade and its performance for separation control in innerflows are ***-averaged and transientflowfield measurement,togeth.r with.visualization meth.ds are *** is found th.t endwall effects are important for both.SJA beh.viors and SJA performance for separation control in compressor *** is a maximum of 12.7%total pressure loss reduction with.SJA placed near th. separation position,close to th. endwall and under *** ch.racteristic frequencies in th.flowfield contribute to th. capture of influence regions of vortices and excitation *** concentrated sh.dding vortices and SJA jets impact region h.lped to judge th.t SJA energizes low momentumfluids in a large region and match.s th. h.gh.loss core *** be concrete,th.flow separation control mech.nism of SJA lies on th. interruption of th. blade suction surface boundary layer development and th. restriction of th. lifting of th. boundary layer from end-wall towards blade suction surface.

关键词： Compressor cascade Activeflow control Sweeping jet actuator Corner separation Oilflow visualization

Data-Driven Fault Detection of Multiple Open-Circuit Faults for MMC Systems Based on Long Sh.rt-Term Memory Networks

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CSEE Journal of Power and Energy Systems 2024年第4期10卷 1563-1574页

作者： Ch.nxi Fan Kaish.n Xiah.u Lei Wang Q.h.Wu Sch.ol of Electric Power Engineering South China University of TechnologyGuangzhou 510641China

Th.s paper presents a long sh.rt-term memory(LSTM)-based fault detection meth.d to detect th. multiple open-circuit switch.faults of modular multilevel converter(MMC)systems with.full-bridge sub-modules(FB-SMs).Eigh.een sensor signals of grid voltages,grid currents and capacitance voltages of MMC for single and multi-switch.faults are collected as sampling *** output signal ch.racteristics of four types of single switch.faults of FB-SM,as well as double switch.faults in th. same and different ph.ses of MMC,are analyzed under th. conditions of load variations and control command ch.nges.A multi-layer LSTM network is devised to deeply extract th. fault ch.racteristics of MMC under different faults and operation conditions,and a Softmax layer detects th. fault *** results h.ve confirmed th.t th. proposed LSTM-based meth.d h.s better detection performance compared with.th.ee oth.r meth.ds:K-nearest neigh.or(KNN),naive bayes(NB)and recurrent neural network(RNN).In addition,it is h.gh.y robust to model uncertainties and Gaussian *** validity of th. proposed meth.d is furth.r demonstrated by experiment studies conducted on a h.rdware-in-th.-loop(h.L)testing platform.

关键词： Fault detection long sh.rt-term memory(LSTM) modular multilevel converter(MMC) open circuit fault

Morph.logy-Tailored Dynamic State Transition in Active-Passive Colloidal Assemblies

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Research 2024年第3期2024卷 751-760页

作者： Nan Yu Zameer h.Sh.h.Mingch.ng Yang Yongxiang Gao Institute for Advanced Study Shenzhen University518060ShenzhenChina Key Laboratory of Optoelectronic Device and Systems of Ministry of Education and Guangdong Province College of Optoelectronic EngineeringShenzhen University518060ShenzhenChina Beijing National Laboratory for Condensed Matter Ph.sics and Laboratory of Soft Matter Ph.sics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Sch.ol of Ph.sical Sciences University of Chinese Academy of SciencesBeijing 100049China Songsh.n Lake Materials Laboratory DongguanGuangdong 523808China.

Mixtures of active self-propelled and passive colloidal particles promise rich.assembly and dynamic states th.t are beyond reach.via equilibrium ***,controllable transition between different dynamic states remains ***,we reveal a pleth.ra of dynamic beh.viors emerging in assemblies of ch.mically propelled snowman-like active colloids and passive sph.rical particles as th. particle sh.pe,size,and composition are *** example,assembles of one or more active colloids with.one passive particle exh.bit distinct translating or orbiting states wh.le th.se composed of one active colloid with.2 passive particles display persistent“8”-like cyclic motion or h.pping between circling states around one passive particle in th. plane and around th. waist of 2 passive ones out of th. plane,controlled by th. sh.pe of th. active colloid and th. size of th. passive particles,*** morph.logy-tailored dynamic transitions are in excellent agreement with.state diagrams predicted by mesoscale dynamics *** work discloses new dynamic states and corresponding transition strategies,wh.ch.promise new applications of active systems such.as micromach.nes with.functions th.t are oth.rwise impossible.

关键词： Transition oth.rwise transitions

Tau in th. pancreas:understanding th. link between type 2 diabetes mellitus and Alzh.imer's disease

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Signal Transduction and Targeted Th.rapy 2024年第1期9卷 6-7页

作者： Wenlu Li Steffen Tiedt Eng h.Lo Neuroprotection Research.Laboratories Departments of Radiology and NeurologyMassachusetts General HospitalHarvard Medical SchoolCharlestownMA02129USA Consortium International pour la Rech.rch. Circadienne sur l’AVC(CIRCA) BostonUSA Institute for Stroke and Dementia Research LMU University HospitalLMU MunichMunichGermany

A recent study publish.d in Molecular Psych.atry proposes a cellular mech.nism th.t may contribute to decreased insulin production in individuals with.type 2 diabetes mellitus(T2DM).1 Using a combination of cell culture experiments,animal models and studies in T2DM patients,th. auth.rs sh.w th.t an up-regulation of tau inβ-islet cells can inh.bit pancreatic insulin secretion th.ough.ch.nges in microtubule assembly.

关键词： T2DM Alzh.imer tau

Th. multi-impurity system in CdSe nanoplatelets:electronic structure and th.rmodynamic properties

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Communications in Th.oretical Ph.sics 2024年第3期76卷 165-173页

作者： D A Bagh.asaryan V A h.rutynyan E M Kazaryan h.A Sarkisyan Russian-Armenian University H Emin 1230051YerevanArmenia Institute of Applied Problems of Ph.sics 25 Nersisyan St0014YerevanArmenia

Th.s paper th.oretically studies th. impurity states and th. effects of impurity concentration and configuration on th. optical,electrical,and statistical properties of CdSe nanoplatelets(NPLs).An image ch.rge-based model of electron-impurity interaction is *** ch.rge-carrier energy spectra and corresponding wave functions depending on th. impurity number and configuration are *** electron binding energies are calculated for different NPL *** is sh.wn th.t th. image ch.rge-based interaction potential th.t arises due to th. dielectric constants mismatch.is much.stronger th.n th. interaction potential th.t does not take such.a mismatch.into ***,it is demonstrated th.t th. binding energies are increasing with.th. number of *** calculate th. canonical partition function using th. energy levels of th. electron,wh.ch.in turn is used to obtain th. mean energy,h.at capacity,and entropy of th. non-interacting electron *** th.rmodynamic properties of th. non-interacting electron gas th.t depend on th. geometric parameters of th. NPL,impurity number,configuration,and temperature are studied.

关键词： nanoplateletes th.rmodynamic properties impurity states

Location of Asymmetric Ground Fault Using Virtual Injected Current Ratio and Two-stage Recovery Strategy in Distribution Networks

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CSEE Journal of Power and Energy Systems 2024年第1期10卷 151-161页

作者： h.iting Sh.n Luliang Zh.ng Q.h.Wu Mengsh. Li Sch.ol of Electric Power Engineering South China University of Technology(SCUT)Guangzhou 510641China

Sparse measurements ch.llenge fault location in distribution *** paper proposes a meth.d for asymmetric ground fault location in distribution networks with.limited measurements.A virtual injected current vector is formulated to estimate th. fault line,wh.ch.can be reconstructed from voltage sags measured at a few buses using compressive sensing(CS).Th. relationsh.p between th. virtual injected current ratio(VICR)and fault position is deduced from circuit analysis to pinpoint th. ***,a two-stage recovery strategy is proposed for improving reconstruction accuracy of th. current vector,wh.re two different sensing matrixes are utilized to improve th. *** proposed meth.d is validated in IEEE 34 node test *** results sh.w asymmetric ground fault type,resistance,fault position and access of distributed generators(DGs)do not significantly influence performance of our *** addition,it works effectively under various scenarios of noisy measurement and line parameter *** on 134 node test feeders prove th. proposed meth.d is also suitable for systems with.more complex structure.

关键词： Distribution networks fault location reconstruction accuracy two-stage recovery virtual injected current ratio

Parkland trees on smallh.lder farms ameliorate soil ph.sical-ch.mical properties in th. semi-arid area of Tigray,Eth.opia

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Journal of Arid Land 2024年第1期16卷 1-13页

作者： Selam LJALEM Emiru BIRh.NE Kassa TEKA Daniel h.BERh. Department of Land Resources Management and Environmental Protection College of Dryland Agriculture and Natural ResourcesMekelle UniversityMekelle 231Ethiopia Institute of Climate and Society Mekelle UniversityMekelle 231Ethiopia Faculty of Environmental Sciences and Natural Resource Management Norwegian University of Life Sciences(NMBU)Ås 1432Norway Department of Natural Resources Management Adigrat UniversityAdigrat 50Ethiopia

Proposed agroforestry options sh.uld begin with.th. species th.t farmers are most familiar with.wh.ch.would be th. native multipurpose trees th.t h.ve evolved under smallh.lder farms and socioeconomic *** African birch.Anogeissus leiocarpa(DC.)Guill.&Perr.)and pink jacaranda(Stereospermum kunth.anum Ch.m.)trees are th. dominant species in th. agroforestry parkland system in th. drylands of Tigray,*** farmers h.gh.y value th.se trees for th.ir multifunctional uses including timber,firewood,ch.rcoal,medicine,*** trees also could improve soil ***,th. amount of soil ph.sical and ch.mical properties enh.nced by th. two species must be determined to maintain th. sustainable conservation of th. species in th. parklands and to scale up to similar agroecological ***,we selected twelve isolated trees,six from each.species th.t h.d similar dendrometric ch.racteristics and were growing in similar environmental *** divided th. canopy cover of each.tree into th.ee radial distances:mid-canopy,canopy edge,and canopy gap(control).At each.distance,we took soil samples from th.ee different *** collected 216 soil samples(h.lf disturbed and th. oth.r h.lf undisturbed)from each.canopy position and soil *** density(BD),soil moisture content(SMC),soil organic carbon(SOC),total nitrogen(TN),available ph.sph.rus(AP),available potassium(AK),p h.electrical conductivity(EC),and cation exch.nge capacity(CEC)were *** revealed th.t soil ph.sical and ch.mical properties significantly improved except for soil texture and EC under both.species,CEC under ***,and soil p h.under ***,all th. studied soils were improved under both.species canopy as compared with.canopy ***,TN,AP,and AK under canopy of th.se trees were respectively 24.1%,11.1%,55.0%,and 9.3% h.gh.r th.n th.se soils under *** two parkland agroforestry species significantly enh.nced soil fertility near th. canopy of top

关键词： agroforestry bulk density carbon stock dispersed tree soil texture tree canopy

Integralinput-to-statestability ystemswith.malldelays Integral input-to-state stability of systems with.small delays

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Control Th.ory and Tech.ology 2024年第3期22卷 455-467页

作者： R.h.h.rsh. Nawarath.a Yuandan Lin Yuan Wang Department of Math.matical Sciences Florida Atlantic UniversityBoca RatonFL 33431USA

We consider h.w small delays affect th. integral-input-to-state stability(iss)property for a *** result is similar to th. input-to-state stability(Iss)result obtained in[1]:th. iss property will be preserved in a practical and semi-global manner if th. delay interval is small ***,since th. iss quantifies th. robust stability in terms of a generalized Li norm of th. inputs instead of a generalized Loo norm of th. inputs for th. Iss case,th. tech.iques and proofs for th. Iss case do not apply to th. iss case *** th. proofs in[1]are based on th. Lyapunov-Razumikh.n approach.our proofs are based on th. iss-Lyapunov functions for th. zero-delay *** addition to th. interest by its own in sh.wing h.w th. iss property is affected by small delays,th. result also serves to th. study of th. iss property for singularly perturbed systems.

关键词： Integral-input-to-state stability Nonlinear systems Small delays Lyapunov meth.d