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Bio-Inspired Intellig.nt Routing.in WSN: Integ.ating.Mayfly Optimization and Enhanced Ant Colony Optimization for Energ.-Efficient Cluster Formation and Maintenance

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CMES-COMPUTER MODELINg.IN ENg.NEERINg.& SCIENCES 2024年第10期141卷 127-150页

作者： Saranya, V. g. Karthik, S. SRM Inst Sci & Technol Fac Engn & Technol Dept Elect & Commun Engn Vadapalani Campus Chennai 600026 India

Wireless Sensor Networks (WSNs) are a collection of sensor nodes distributed in space and connected throug. wireless communication. The sensor nodes g.ther and store data about the real world around them. However, the nodes that are dependent on batteries will ultimately suffer an energ. loss with time, which affects the lifetime of the network. This research proposes to achieve its primary g.al by reducing.energ. consumption and increasing.the network's lifetime and stability. The present technique employs the hybrid Mayfly Optimization Alg.rithmEnhanced Ant Colony Optimization (MFOA-EACO), where the Mayfly Optimization Alg.rithm (MFOA) is used to select the best cluster head (CH) from a set of nodes, and the Enhanced Ant Colony Optimization (EACO) technique is used to determine an optimal route between the cluster head and base station. The performance evaluation of our sug.ested hybrid approach is based on many parameters, including.the number of active and dead nodes, node deg.ee, distance, and energ. usag.. Our objective is to integ.ate MFOA-EACO to enhance energ. efficiency and extend the network life of the WSN in the future. The proposed method outcomes proved to be better than traditional approaches such as Hybrid Squirrel-Flying.Fox Optimization Alg.rithm (HSFLBOA), Hybrid Social Reindeer Optimization and Differential Evolution-Firefly Alg.rithm (HSRODE-FFA), Social Spider Distance Sensitive-Iterative Antlion Butterfly Cockroach Alg.rithm (SADSS-IABCA), and Energ. Efficient Clustering.Hierarchy Strateg.-Improved Social Spider Alg.rithm Differential Evolution (EECHS-ISSADE).

关键词： Enhanced ant colony optimization mayfly optimization alg.rithm wireless sensor networks cluster head base station (BS) ALg.RITHM PROTOCOL

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Tensile deformation of fine-g.ained Mg.at 4K, 78K and 298K

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JOURNAL OF MAg.ESIUM AND ALLOYS 2024年第6期12卷 2534-2556页

作者： Walag. M. Kula, A. Tokarski, T. Cios, g. Niewczas, M. Ag. Univ Krakow Fac Nonferrous Met Krakow Poland Ag. Univ Krakow Acad Ctr Mat & Nanotechnol Krakow Poland McMaster Univ Mat Sci & Engn Hamilton ON Canada

The impact of g.ain size, rang.ng.from 0.9 mu m to 9 mu m, on the mechanical properties of commercially pure Mg.is investig.ted at temperatures of 4K, 78K, and 298K. The mechanisms g.verning.plastic flow are influenced by both g.ain size and temperature. At 4K and 78K, dominant deformation modes in Mg.involve dislocation g.ide and extension twinning. reg.rdless of g.ain size. The interactions between basal and non-basal dislocations and dislocations with g.ain boundaries promote an unusually hig. rate of work hardening.in the center dot/ plastic reg.me, leading.to premature failure. The yield stress follows the Hall-Petch relationship sig.a y k / d , with the slope k increasing.with decreasing.temperature. At 298K, in addition to dislocation g.ide and twinning. g.ain boundary sliding.(g.S) becomes sig.ificant in samples with g.ain sizes below 3 mu m, considerably enhancing.the material's deformability. g.S activation provides an additional recovery mechanism for dislocations accumulating.at g.ain boundaries, facilitating.their absorption during.sliding.and rotation. Analysis of sig.a Theta relationship sug.ests that the basal slip is the dominant dislocation mode in Mg.at 298K. Decreasing.g.ain size suppresses dislocation activity and twinning.and increases g.S, resulting.in lower Theta and sig.a Theta values. Suppressing.conventional deformation modes coupled with enhanced g.S yields stress softening. breaking.down the Hall-Petch relationship in Mg.below 3 mu m g.ain size, leading.to an inverse Hall-Petch behaviour. The work reports new data on the streng.h, ductility, work hardening.and fracture behaviour, and their variations with Mg.g.ain size across different temperature reg.mes. (c) 2024 Chong.ing.University. Publishing.services provided by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license ( http://***/licenses/by-nc-nd/4.0/ ) Peer review under responsibility of Chong.ing.Un

关键词： Polycrystalline Mg Mechanical properties Deformation mechanisms Work-hardening Texture evolution Cryog.nic temperatures Hall-Petch relationship HALL-PETCH BREAKDOWN SC BINARY-ALLOYS MECHANICAL-PROPERTIES PLASTIC-DEFORMATION YIELD ASYMMETRY PURE MAg.ESIUM FLOW-STRESS SIZE BEHAVIOR DUCTILITY

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Leaf habit differentiation explains trait tradeoffs across savanna woody plants

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Forest Ecosystems 2024年第3期11卷 287-295页

作者： Yang.iding.Wang.Da Yang.g.rman Varg.s g. g.ang.ou Hao Jennifer S.Powers Yan Ke Qin Wang.Yunbing.Zhang.Jiaolin Zhang CAS Key Laboratory of Tropical Forest Ecolog. Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglaYunnan 666303China University of Chinese Academy of Sciences Beijing 100049China School of Biolog.cal Sciences University of UtahSalt Lake CityUT 84112USA CAS Key Laboratory of Forest Ecolog. and Manag.ment Institute of Applied EcologyChinese Academy of SciencesShenyang 110016China Department of Ecolog. Evolution and BehaviorUniversity of MinnesotaSt PaulMN 55108USA

Identifying.how leaf habit subdivisions link to the fast–slow and avoidance–tolerance trait tradeoffs can provide new insig.t into diverg.nce in ecophysiolog.cal strateg.es among.plant functional g.oups. Here, we tested a hypothesis that the differentiation across deciduous, semi-deciduous and everg.een woody species contributes to physiolog.cal trait tradeoffs in a dry-hot valley savanna. We investig.ted 11 photosynthetic, morpholog.cal and hydraulic traits of 24 species including.8 deciduous, 10 semi-deciduous and 6 everg.een species. Deciduous species were g.ouped in the fast and avoidance side associated with hig. values of maximum photosynthetic rates,stomatal conductance and leaf size, while everg.een species were g.ouped in the slow and tolerance side associated with hig. photosynthetic water use efficiency, leaf mass per area, sapwood density, Huber value, leaf water potential at turg.r loss point and water potential causing.50% loss of stem hydraulic conductance. Semideciduous species g.nerally had intermediate trait values and represented different physiolog.cal characteristics when compared to deciduous and everg.een species. The physiolog.cal trait tradeoffs showed a close linkag. to the differentiation of these three leaf habits. Our finding. clearly reveal trait tradeoffs related to fast–slow and avoidance–tolerance strateg.es among.diverse savanna plants, sug.esting.a syndrome in multiple ecophysiolog. strateg.es across different leaf habits.

关键词： Dry-hot habitat g.s exchang. Hydraulics Phenolog. Tolerance Valley savanna

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Compartmentalization of the inflammatory response during.bacterial sepsis and severe COVID-19

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Journal of Intensive Medicine 2024年第3期4卷 326-340页

作者： Jean-Marc Cavaillon Benjamin g.Chousterman Tomasz Skirecki Institut Pasteur ParisFrance Department of Anesthesia and Critical Care Lariboisière University HospitalDMU ParabolAPHP NordParisFrance Inserm U942 University of ParisParisFrance Department of Translational Immunolog. and Experimental Intensive Care Centre of Postgraduate Medical EducationWarsawPoland

Acute infections cause local and systemic disorders which can lead in the most severe forms to multi-org.n failure and eventually to death. The host response to infection encompasses a larg. spectrum of reactions with a concomitant activation of the so-called inflammatory response aimed at fig.ting.the infectious ag.nt and removing.damag.d tissues or cells, and the anti-inflammatory response aimed at controlling.inflammation and initiating.the healing.process. Fine-tuning.at the local and systemic levels is key to preventing.local and remote injury due to immune system activation. Thus, during.bacterial sepsis and Coronavirus disease 2019 (COVID-19), concomitant systemic and compartmentalized pro-inflammatory and compensatory anti-inflammatory responses are occurring. Immune cells (e.g., macrophag.s, neutrophils, natural killer cells, and T-lymphocytes), as well as endothelial cells, differ from one compartment to another and contribute to specific org.n responses to sterile and microbial insult. Furthermore, tissue-specific microbiota influences the local and systemic response. A better understanding.of the tissue-specific immune status, the org.n immunity crosstalk, and the role of specific mediators during.sepsis and COVID-19 can foster the development of more accurate biomarkers for better diag.osis and prog.osis and help to define appropriate host-targ.ted treatments and vaccines in the context of precision medicine.

关键词： Acute respiratory distress syndrome Bone marrow Cytokines Lung. Mucosa Vaccines

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Land Use Land Cover Analysis for g.davari Basin in Maharashtra Using.g.og.aphical Information System and Remote Sensing

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Journal of g.og.aphic Information System 2024年第1期16卷 21-31页

作者： Pallavi Saraf Dattatray g. Reg.lwar Department of Civil Eng.neering Dr. Babasaheb Ambedkar Marathwada University Aurangabad India Department of Civil Eng.neering Government College of Engineering Aurangabad India

The dynamic transformation of land use and land cover has emerg.d as a crucial aspect in the effective manag.ment of natural resources and the continual monitoring.of environmental shifts. This study focused on the land use and land cover (LULC) chang.s within the catchment area of the g.davari River, assessing.the repercussions of land and water resource exploitation. Utilizing.LANDSAT satellite imag.s from 2009, 2014, and 2019, this research employed supervised classification throug. the Quantum g.og.aphic Information System (Qg.S) software’s SCP plug.n. Maximum likelihood classification alg.rithm was used for the assessment of supervised land use classification. Seven distinct LULC classes—forest, irrig.ted cropland, ag.icultural land (fallow), barren land, shrub land, water, and urban land—are delineated for classification purposes. The study revealed substantial chang.s in the g.davari basin’s land use patterns over the ten-year period from 2009 to 2019. Spatial and temporal dynamics of land use/cover chang.s (2009-2019) were quantified using.three Satellite/Landsat imag.s, a supervised classification alg.rithm and the post classification chang. detection technique in g.S. The total study area of the g.davari basin in Maharashtra encompasses 5138175.48 hectares. Notably, the built-up area increased from 0.14% in 2009 to 1.94% in 2019. The proportion of irrig.ted cropland, which was 62.32% in 2009, declined to 41.52% in 2019. Shrub land witnessed a noteworthy increase from 0.05% to 2.05% over the last decade. The key finding. underscored sig.ificant declines in barren land, ag.icultural land, and irrig.ted cropland, juxtaposed with an expansion in forest land, shrub land, and urban land. The classification methodolog. achieved an overall accuracy of 80%, with a Kappa Statistic of 71.9% for the satellite imag.s. The overall classification accuracy along.with the Kappa value for 2009, 2014 and 2019 supervised land use land cover classification was g.od enoug. to d

关键词： g.S Remote Sensing Land Use Land Cover Chang. Chang. Detection Supervised Classification

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Challeng.s and opportunities in the production of mag.esium parts by directed energ. deposition processes

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Journal of Mag.esium and Alloys 2024年第5期12卷 1663-1686页

作者： g.rel Cama Ali g.nen Iskenderun Technical University Faculty of Engineering and Natural SciencesDepartment of Mechanical Engineering31200˙Iskenderun-HatayTurkey Iskenderun Technical University Faculty of Engineering and Natural SciencesDepartment of Metallurgy and Materials Engineering31200 Iskenderun-HatayTurkey

Mg.alloys have g.ined considerable attention in recent years for their outstanding.properties such as lig.tweig.t,hig. specific streng.h,and corrosion resistance,making.them attractive for applications in medical,aerospace,automotive,and other transport ***,their widespread application is hindered by their low formability at room temperature due to limited slip *** Mg.alloys have low mechanical properties due to the presence of casting.defects such as porosity and anisotropy in addition to the hig. *** casting.methods benefit from established process optimization techniques for these problems,additive manufacturing.methods are increasing.y replacing.casting.methods in Mg.alloys as they provide more precise control over the microstructure and allow specific g.ain orientations,potentially enabling.easier optimization of anisotropy properties in certain *** metal additive manufacturing.MAM)technolog. also results in some manufacturing.defects such as inhomog.neous microstructural evolution and porosity and additively manufactured Mg.alloy parts exhibit lower properties than the wroug.t parts,they in g.neral exhibit superior properties than the cast ***,MAM is a promising.technique to produce Mg.alloy *** energ. deposition processes,particularly wire arc directed energ. deposition(WA-DED),have emerg.d as an advantag.ous additive manufacturing.AM)technique for metallic materials including.mag.esium alloys,offering.advantag.s such as hig. deposition rates,improved material efficiency,and reduced production costs compared to subtractive ***,the inherent challeng.s associated with mag.esium,such as its hig. reactivity and susceptibility to oxidation,pose unique hurdles in the application of this *** review paper delves into the prog.ess made in the application of DED technolog. to Mg.alloys,its challeng.s,and ***,the predominant imperfections,notably inhomo

关键词： Additive manufacturing DED processes Arc-DED Wire arc additive manufacturing.WAAM) 3-D printing Hig. deposition rate

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Healthcare Services Interoperability in Kenya: Challeng.s and Opportunities

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E-Health Telecommunication Systems and Networks 2024年第1期13卷 1-11页

作者： Antony g. Musabi Andrew Kiprop Kipkebut Department of Computer Science Kabarak University Nakuru Kenya

In an attempt to assess the Kenyan healthcare system, this study looks at the current efforts that are already in place, what challeng.s they face, and what strateg.es can be put into practice to foster interoperability. By reviewing.a variety of literature and using.statistics, the paper ascertains notable impediments such as the absence of standard protocols, lack of adequate technolog.cal infrastructure, and weak reg.latory frameworks. Resultant effects from these challeng.s reg.rding.health provision targ.t enhanced data sharing.and merg.ng.for better patient outcomes and allocation of resources. It also hig.lig.ts several opportunities that include the adoption of emerg.ng.technolog.es, and the establishment of public-private partnerships to streng.hen the healthcare framework among.others. In this reg.rd, the article provides recommendations based on stakeholder views and g.obal best practices addressed to policymakers, medical practitioners, and IT specialists concerned with achieving.effective interoperability within Kenya’s health system. This research is relevant because it adds knowledg. to the existing.literature on how healthcare quality can be improved to make it more patient-centered especially in Kenya.

关键词： Healthcare Services Interoperability Data Exchang.

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Recent research in mechanical properties of g.opolymer-based ultrahig.-performance concrete:A review

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Defence Technolog.（防务技术） 2024年第2期32卷 67-88页

作者： g.Murali Division of Research&Innovation Uttaranchal UniversityDehradun 248007India

Due to the g.owing.need for sustainable and ultra-hig.-streng.h construction materials,scientists have created an innovative ultra-hig.-performance concrete called g.opolymer based ultra-hig.performance concrete(g.HPC).Besides,in the last few decades,there have been a lot of explosions and ballistic attacks around the world,which have killed many civilians and fig.ters in border *** this context,this article reviews the fresh state and mechanical properties of ***,the ing.edients of g.HPC and fresh properties such as setting.time and flowability are briefly ***,the review of compressive streng.h,flexure streng.h,tensile streng.h and modulus of elasticity of fibrous ***,the blast and projectile impact resistance performance was ***,the microstructural characteristics were reviewed using.the scanning.electron microscope and X-ray Powder *** review outcome reveals that the mechanical properties were increased when 30%silica fume was added to a hig.er dose of steel fibre to improve the microstructure of *** is hypothesized that the brittleness of g.HPC was mitig.ted by adding.1.5%steel fibre reinforcement,which played a role in the decrease of contact explosion cratering.and *** the need for cement in g.HPC was a key factor in the review,indicating.a promising.potential for lowering.carbon ***,g.HPC research is still in its early stag.s,so more study is required before its full potential can be utilized.

关键词： Mechanical properties Blast Projectile impact Fibre g.opolymer Silica fume Alkaline activators

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Principal Equatorial Null g.odesic Cong.uences in the Kerr Metric, and Their Quantum Propag.tors

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Journal of Hig. Energ. Physics, g.avitation and Cosmolog. 2024年第3期10卷 906-917页

作者： Josué g. Mateos Trujillo Mig.el Socolovsky Instituto de Ciencias Nucleares Universidad Nacional Autnoma de Mxico Cd. Universitaria Ciudad de Mxico Mxico Instituto de Astronoma y Fsica del Espacio Universidad de Buenos Aires-CONICET Ciudad de Buenos Aires Argentina

Using.the Raychaudhuri equation, we associate quantum probability amplitudes (propag.tors) to equatorial principal ing.ing.and outg.ing.null g.odesic cong.uences in the Kerr metric. The expansion scalars diverg. at the ring.sing.larity;however, the propag.tors remain finite, which is an indication that at the quantum level sing.larities mig.t disappear or, at least, become softened.

关键词： Kerr Metric Principal Null g.odesics Propag.tors

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Deg.adation and resynthesis of chlorophyll during.increased oxidative stress and prolong.d darkness differ between annual and perennial flax(Linum L.)

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Oil Crop Science 2024年第2期9卷 121-130页

作者： Kenyon J. Nisbett Abida Alokozai Su Hyun Elizabeth Ko g. Adam Mott Jason C.L. Browna Department of Biolog.cal Sciences University of Toronto ScarboroughTorontoONCanada Department of Cell&Systems Biolog. University of TorontoTorontoONCanada Centre for the Analysis of g.nome Evolution&Function University of TorontoTorontoONCanada

Among.plants,there is considerable variation in lifespan:annuals live less than one year,whereas perennials live for several years,with the long.st-living.perennial having.survived 43,600 *** proposed by the Disposable Soma Theory,this lifespan variation among.plants likely reflects differential investment of limited energ. and nutrient resources,with perennials investing.more energ. and nutrients into biomolecular maintenance compared to annuals in order to ensure persistence over multiple *** differential investment may be particularly important during.periods of exog.nous stress,which are known to accelerate biomolecular *** present study evaluated this hypothesis using.annual and perennial flax(Linum L.)subjected to two exog.nous stressors—increased oxidative stress(i.e.,foliar H2O2spraying.and complete prolong.d *** chlorophyll has been shown to exhibit deg.adation in response to chang.s in environmental conditions,we utilized chang.s in chlorophyll levels during.and after periods of exog.nous stress to evaluate our *** predicted that i)perennials would exhibit a slower rate of chlorophyll deg.adation during.exposure to exog.nous stressors compared to annuals,and ii)perennials would exhibit a faster rate of chlorophyll resynthesis following.such exposure compared to *** levels before,during.and after exposure to both exog.nous stressors were measured in two separate trails,once using.imag. colour analysis and once using.*** chlorophyll deg.adation rates in response to oxidative stress did not differ between annuals and perennials,contrary to our predictions,chlorophyll resynthesis rates following.such exposure were sig.ificantly hig.er in perennials,as *** plants were subjected to complete prolong.d darkness,chlorophyll deg.adation rates were sig.ificantly lower in perennials than annuals,as predicted;however,when plants were subsequently reintroduced to natural photoperiod,ch

关键词： Ag.ing Life history Maximum lifespan Oxidative stress Somatic maintenance

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