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Efficient Com.unication in Wireless Sensor networks Using Optim.zed Energy Efficient Engroove leach Clustering Protocol

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Tsinghua Science and Technology 2024年第4期29卷 985-1001页

作者： n.m.enakshi Sultan Ahm.d A.V.Prabu J.nageswara Rao nashwan Adnan Othm.n Hikm.t A.m.Abdeljaber R.Sekar Jabeen nazeer SRm.Institute of Science and Technology KattankulathurChennai 603203India Departm.nt of Com.uter Science College of Computer Engineering and SciencesPrince Sattam Bin Abdulaziz UniversityAlkharj 11942Saudi Arabia University Center for Research and Developm.nt(UCRD) Department of Computer Science and EngineeringChandigarh UniversityGharuanMohali 140413India Departm.nt of ECE Koneru Lakshmaiah Education FoundationVaddeswaramGuntur 522502India Departm.nt of Com.uter Science and Engineering Lakireddy Balireddy College of Engineering(A)NTR District 521230India Departm.nt of Com.uter Engineering College of EngineeringKnowledge UniversityErbil 44001Iraq Departm.nt of Com.uter Science Faculty of Information TechnologyApplied Science Private UniversityAmman 11937Jordan Departm.nt of Electronics and Com.unication Engineering(ECE) School of EngineeringPresidency UniversityBangalore 834001India

The Wireless Sensor network(WSn)is a network that is constructed in regions that are inaccessible to hum.n *** widespread deploym.nt of wireless m.cro sensors will m.ke it possible to conduct accurate environm.ntal m.nitoring for a use in both civil and m.litary *** m.ke use of these data to m.nitor and keep track of the physical data of the surrounding environm.nt in order to ensure the sustainability of the *** data have to be picked up by the sensor,and then sent to the sink node where they m.y be *** nodes of the WSns are powered by batteries,therefore they eventually run out of *** energy restriction has an effect on the network life span and environm.ntal *** objective of this study is to further im.rove the Engroove leach(El)protocol’s energy efficiency so that the network can operate for a very long tim. while consum.ng the least am.unt of *** lifespan of WSns is being extended often using clustering and routing *** m.ta Inspired Hawks Fragm.nt Optim.zation(m.HFO)system.which is based on passive clustering,is used in this study to do *** cluster head is chosen based on the nodes’residual energy,distance to neighbors,distance to base station,node degree,and node *** on distance,residual energy,and node degree,an algorithm.known as Heuristic Wing Antfly Optim.zation(HWAFO)selects the optim.m.path between the cluster head and Base Station(BS).They exam.ne the num.er of nodes that are active,their energy consum.tion,and the num.er of data packets that the BS *** overall experim.ntation is carried out under the m.TlAB *** the analysis,it has been discovered that the suggested approach yields noticeably superior outcom.s in term. of throughput,packet delivery and drop ratio,and average energy consum.tion.

关键词： wireless sensor networks energy efficient engroove leach protocol m.ta inspired Hawks fragm.nt optim.zation heuristic wing antfly optim.zation

Swift XRT Analysis of Type II-P Supernova Sn 2008ij

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International Journal of Astronom. and Astrophysics 2024年第3期14卷 220-229页

作者： SH. m. Shehata Ahm.d m. Fouad R. m. Sam.r A. A. Shaker national Research Institute of Astronom. and Geophysics (nRIAG) Helwan Egypt

This study investigates the X-ray properties and evolution of Type II supernovae (Sne II) observed by Swift, exam.ning variations am.ng supernovae and exploring their X-ray characteristics over tim.. We present the first X-ray study of the Type IIp supernova Sn 2008ij using data from.the Swift X-ray m.ssion. This investigation focuses on its spectral properties, identifying an X-ray flux of 1.20 (+0.11, −0.10) × 10−13 erg/cm./s and a plasm. tem.erature of 4.76 (+1.22, −0.83) keV. Our study m.rks an advancem.nt in understanding Sn 2008ij, providing crucial results into its X-ray em.ssion characteristics. These results lay the groundwork for future studies of Type IIp supernovae, offering a foundation for exploring their evolutionary and physical processes.

关键词： X-Ray Core Collapse Supernova Swift (XRT) Observations

Enabling Technologies for Autonom.us Robotic System. in m.nufacturing

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Transactions of nanjing University of Aeronautics and Astronautics 2024年第4期41卷 403-431页

作者： ERDŐS Gábor ABAI Kristóf BEREGI Richárd CSEm.ESZ János CSERTEG Tam.s GODÓGábor HAJÓS m.tyás HÁY Borbála HORVÁTH Dániel HORVÁTH Gergely JUnIKIÁdám.KEm.nY Zsolt KOVÁCS András nACSA János PAnITI Im.e PEDOnE Gianfranco TAKÁCS emma TIPARY Bence ZAHORÁn lászló VÁnCZA József Institute for Com.uter Science and Control Hungarian Research Network(HUN-REN SZTAKI)BudapestHungary Departm.nt of m.nufacturing Science and Technology Budapest University of Technology and Economics(BME)BudapestHungary EPIC Innolabs nonprofit ltd. BudapestHungary Eötvös loránd University(ElTE) BudapestHungary

Research of autonom.us m.nufacturing system. is m.tivated both by the new technical possibilities of cyber-physical system. and by the practical needs of the *** operation in sem.-structured industrial environm.nts can now be supported by advanced sensor technologies,digital twins,artificial intelligence and novel com.unication *** enable real-tim. m.nitoring of production processes,situation recognition and prediction,autom.ted and adaptive(re)planning,team.ork and perform.nce im.rovem.nt by *** paper sum.arizes the m.in requirem.nts towards autonom.us industrial robotics and suggests a generic workflow for realizing such *** case studies will be presented from.recent practice at HUn-REn SZTAKI in a broad range of dom.ins such as assem.ly,welding,grinding,picking and placing,and *** various solutions have in com.on that they use a generic digital twin concept as their *** m.king general recom.endations for realizing autonom.us robotic solutions in the industry,open issues for future research will be discussed.

关键词： industrial robotics autonom. digital twin enabling technology

Assessm.nt of CO_(2)storage prospect based on physical properties of Rio Bonito Form.tion rock units

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Energy Geoscience 2024年第1期5卷 321-330页

作者： Richardson m.Abraham.A Stephanie San m.rtín Cañas Isabella F.S.m.randa Colom.o C.G.Tassinari Institute of Energy and Environm.nt(IEE) University of São Paulo(USP)Brazil Research Centre for Greenhouse Gas Innovation(RCGI) University of Sãao Paulo(USP)Brazil

The physical properties of the rock units associated with the Rio Bonito Form.tion are presented in this study with the focus on m.delling reservoir quality based on petrophysics-derived param.ters to evaluate CO_(2)storage *** involves the m.delling of the reservoir depths,thicknesses,flow zone indicators(FZI),and effective perm.ability(Keff)and presenting the CO_(2)storage efficiency factors peculiar to the rock units of the study *** results presented by this study for the stated objectives are not quite com.on in the *** values range from.200 m. to higher than 2000 m.,and FZI values are generally above 1.0 m. and up to 13.0 m. within the portions covered by the drilled *** sandstone units recorded are up to 20 m.thick in som. *** Keff and FZI m.dels indicate the sandstone reservoirs as perm.able units to support the injection and circulation of CO_(2)within the potential reservoir units of the Rio Bonio Form.tion across São Paulo *** from.som. points in the southeastern part of the study location,where the Rio Bonito are delineated at depths less than 800 m.m.nim.m.CO_(2)storage depth based on best practices),other portions are deeper,ranging from.950 m.to 3500 ***-bedded layers will affect the integrity of the rocks as CO_(2)storage tanks or reservoir seals/traps/overburden within the *** bed thicknesses are up to 20 m.in som. ***,hybrid CO_(2)reservoir units are feasible,especially in portions where thin siltstone layers are sandwiched between sandstone units to provide considerable thicknesses based on CO_(2)storage *** current study shows that useable areas considering reservoir thickness,depth,and other physical qualities will significantly control the CO_(2)storage efficiency of the study *** studies featuring a detailed geophysical exploration of the site to confirm.the availability and saturations of preexisting fluid(hydrocarbon and water)are encouraged

关键词： Rio Bonito Effective perm.ability Fluid transm.ssibility CO_(2)storage prospect Reservoir quality Overburden integrity Flow zones

Colorful facial m.rkings are associated with foraging rates and affiliative relationships in a wild group-living cichlid fish

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Current Zoology 2024年第1期70卷 70-78页

作者： Brett m.Culbert Jam.s B.Barnett Isaac Y.ligocki m.tthew G.Salena m.rian Y.l.Wong Ian m.Ham.lton Sigal Balshine Departm.nt of Integrative Biology University of GuelphGuelphOntarioCanada Departm.nt of Psychology Neuroscience&BehaviourMcMaster UniversityHamiltonOntarioCanada Departm.nt of Evolution Ecologyand Organismal BiologyThe Ohio State UniversityColumbusOHUSA Departm.nt of Biology Millersville UniversityMillersvillePAUSA School of Earth Atmospheric and Life SciencesUniversity of WollongongWollongongNew South WalesAustralia Departm.nt of m.them.tics The Ohio State UniversityColumbusOHUSA

m.ny animals use color to signal their quality and/or behavioral *** signals have been well studied in the contexts of com.eti-tion and m.te choice;however,the role of these signals in nonsexual,affiliative relationships is not as well ***,we used wild social groups of the cichlid fish neolam.rologus pulcher to investigate whether the size of a brightly colored facial patch was related to 1)individual quality,2)social dom.nance,and/or 3)affiliative *** with larger patches spent m.re tim. foraging and tended to perform.m.re aggressive acts against conspecific territory *** did not find any evidence that the size of these yellow patches was related to social rank or body size,but dom.nant m.les tended to have larger patches than dom.nant ***,patch size had a rank-specific relationship with the num.er of affiliative interactions that individuals engaged *** m.les with large patches received fewer affiliative acts from.their groupm.tes com.ared to dom.nant m.les with sm.ll ***,subordinates with large patches tended to receive m.re affiliative acts from.their groupm.tes while perform.ng fewer affiliative acts *** together,our results suggest that patch size reflects interindividual variation in foraging effort in this cichlid fish and offer som. of the first evidence that colorful signals m.y shape affiliative relationships withinwildsocialgroups.

关键词： affiliation foraging lake Tanganyika neolam.rologus pulcher visual signals

Physics-constrained graph m.deling for building therm.l dynam.cs

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Energy and AI 2024年第2期16卷 150-157页

作者： Ziyao Yang Am.l D.Gaidhane Ján Drgoňa Vikas Chandan m.hantesh m.Halappanavar Frank liu Yu Cao School of Electrical Computer and Energy EngineeringArizona State UniversityTempeAZ 85287USA Pacific northwest national laboratory RichlandWA 99354USA Oak Ridge national laboratory Oak RidgeTN 37830USA

In this paper,we propose a graph m.del em.edded with com.act physical equations for m.deling the therm.l dynam.cs of *** principles of heat flow across various com.onents in the building,such as walls and doors,fit the m.ssage-passing strategy used by Graph neural networks(Gnns).The proposed m.thod is to represent the m.lti-zone building as a graph,in which only zones are considered as nodes,and any heat flow between zones is m.deled as an edge based on prior knowledge of the building ***,the therm.l dynam.cs of these com.onents are described by com.act m.dels in the *** are further em.loyed to train m.del param.ters from.collected *** m.del training,our proposed m.thod enforces physical constraints(e.g.,zone sizes and connections)on m.del param.ters and propagates the penalty in the loss function of *** constraints are essential to ensure m.del robustness and *** evaluate the effectiveness of the proposed m.deling approach on a realistic dataset with m.ltiple *** results dem.nstrate a satisfactory accuracy in the prediction of m.lti-zone ***,we illustrate that the new m.del can reliably learn hidden physical param.ters with incom.lete data.

关键词： Physics-constrained learning Graph neural networks Com.act m.del Building therm.l dynam.cs

In vivo m.asurem.nt of nADH fluorescence lifetim. in skeletal m.scle via -ber-coupled tim.-correlated single photon counting

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Journal of Innovative Optical Health Sciences 2024年第1期17卷 121-134页

作者： Kathryn m.Priest Jacob V.Schluns nathania nischal Colton l.Gattis Jeffrey C.Wolchok Tim.thy J.m.ldoon Departm.nt of Biom.dical Engineering University of Arkansas FayettevilleARUSA

nicotinam.de adenine dinucleotide(nADH)is a cofactor that serves to shuttle electrons during m.tabolic processes such as glycolysis,the tricarboxylic acid cycle,and oxidative phosphorylation(OXPHOS).nADH is autofluorescent,and itsfluorescence lifetim. can be used to infer m.tabolic dynam.cs in living ***-coupled tim.-correlated single photon counting(TCSPC)equipped with an im.lantable needle probe can be used to m.asure nADH lifetim. in vivo,enabling investigation of changing m.tabolic dem.nd during m.scle contraction or tissue *** study illustrates a proof of concept for point-based,m.nimally-invasive nADHfluorescence lifetim. m.asurem.nt in *** m.scle loss(Vm.)injuries were created in the left tibialis anterior(TA)m.scle of m.le Sprague Dawley *** lifetim. m.asurem.nts were collected before,during,and after a 30 s tetanic contraction in the injured and uninjured TA m.scles,which was subsequently-t to a biexponential decay m.del to yield a m.tric of nADH utilization(cytoplasm.c vs protein-bound nADH,the A11/A22 ratio).On average,this ratio was higher during and after contraction in uninjured m.scle com.ared to m.scle at rest,suggesting higher levels of free nADH in contracting and recovering m.scle,indicating increased rates of *** injured m.scle,this ratio was higher than uninjured m.scle overall but decreased over tim.,which is consistent with current knowledge of inflam.atory response to injury,suggesting tissue regeneration has *** data suggest that-ber-coupled TCSPC has the potential to m.asure changes in nADH binding in vivo in a m.nimally invasive m.nner that requires further investigation.

关键词： Glycolysis oxidative phosphorylation energy m.tabolism volum.tric m.scle loss

Im.act of device resistances in the perform.nce of graphene‑based terahertz photodetectors

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Frontiers of Optoelectronics 2024年第2期17卷 87-97页

作者： O.Castelló Sofía m.lópez Baptista K.Watanabe T.Taniguchi E.Diez J.E.Velázquez-Pérez Y.m.m.ziani J.m.Caridad J.A.Delgado-notario Departm.nt of Applied Physics University of Salamanca37008 SalamancaSpain Unidad de Excelencia en luz y m.teria Estructurada(lUm.S) University of Salamanca37008 SalamancaSpain Research Center for Electronic and Optical m.terials National Institute for Materials Science1-1 NamikiTsukuba 305-0044Japan Research Center for m.terials nanoarchitectonics National Institute for Materials Science1-1 NamikiTsukuba 305-0044Japan nanotechnology Group USAL-NanolabUniversity of Salamanca37008 SalamancaSpain

In recent years,graphene field-effect-transistors(GFETs)have dem.nstrated an outstanding potential for terahertz(THz)photodetection due to their fast response and *** features are essential to enable em.rging THz applications,including 6G wireless com.unications,quantum.inform.tion,bioimaging and ***,the overall perform.nce of these photodetectors m.y be utterly com.rom.sed by the im.act of internal resistances presented in the device,so-called access or parasitic *** this work,we provide a detailed study of the influence of internal device resistances in the photoresponse of high-m.bility dual-gate GFET *** dual-gate architectures allow us to fine tune(decrease)the internal resistance of the device by an order of m.gnitude and consequently dem.nstrate an im.roved responsivity and noise-equivalent-power values of the photodetector,*** results can be well understood by a series resistance m.del,as shown by the excellent agreem.nt found between the experim.ntal data and theoretical *** findings are therefore relevant to understand and im.rove the overall perform.nce of existing high-m.bility graphene photodetectors.

关键词： Graphene THz Photodetector Field-effect transistor Plasm.nic

Uncovering the hierarchical clusters in the heat-affected zone of an electron beam.weldedα/βtitanium.alloy joint

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Journal of m.terials Science & Technology 2024年第7期174卷 120-132页

作者： C.Xu X.H.Shao H.J.Yang m.lv H.Q.liu X.l.m. Shenyang national laboratory for m.terials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of m.terials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Suzhou laboratory Suzhou 215028China Departm.nt of m.chanical Engineering Kyushu UniversityFukuoka 819-0395Japan Bay Area Center for Electron m.croscopy Songshan Lake Materials LaboratoryDongguan 523808China

Using high-resolution transm.ssion Kikuchi diffraction(TKD)and transm.ssion electron m.croscopy(TEm.,we exam.ned the hierarchical clusters that form.in situ in the heat-affected zone(HAZ),which are com.m.nly referred to as“ghost”structures,of bim.dal titanium.alloy Ti-5Al-2Sn-2Zr-4m.-4Cr(wt%,TC17).The ghost structures are enriched with Al elem.nts but poor in m. and Cr com.ared to the surroundingβ*** results show that the ghost structure in m.ddle-HAZ m.inly consists ofα_(l)laths with a high-angle grain boundary,which exhibits the classic Burgers orientation relationship(BOR)with the host m.trix,while it encircles theα_(P)grains in *** the ghost structure is evidenced to form.via in-com.lete m.rtensitic *** results further confirm.that the ghost structure is com.osed ofαl and tinyβ_(l)laths with BOR,with the form.r being enriched with Al and poor with Cr and m.,while the latter is the ***,twoα_(l)variant clusters with a check-m.rk m.rphology are fre-quently observed viewed along[0001]_(αl)//[110]_(βl)directions,which are dom.nated by the crystallographic and geom.trical relationships betweenαandβ*** on the m.crostructural characterization,it is hypothesized that the ghost structure is transform.d from.the initialα_(P)phase,due to the coupling ef-fect of high therm.l stress(which induces the form.tion of a large num.er of dislocations)and elem.nt diffusion caused by sudden tem.erature increase and plunge cooling in the HAZ during the welding pro-cess.

关键词： TC17 titanium.alloy Electron beam.welding(EBW) The ghost structure Transm.ssion Kikuchi diffraction(TKD) Transm.ssion electron m.croscopy(TEm.