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Ener.y-efficient joint UAv.secur. communication and 3D tr.jector. optimization assisted by r.configur.ble intelligent sur.aces in the pr.sence of eav.sdr.pper.

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Defence Technology（防务技术） 2024年第1期31卷 537-543页

作者： Huang Hailong Mohsen Eskandar. Andr.y v.Sav.in Wei Ni The Depar.ment of Aer.nautical and Av.ation Engineer.ng The Hong Kong Polytechnic UniversityHong KongChina School of Electr.cal Engineer.ng and Telecommunications University of New South WalesSydney2052Australia Data61 CSIROAustralia

We consider.a scenar.o wher. an unmanned aer.al v.hicle(UAv.,a typical unmanned aer.al system(UAS),tr.nsmits confidential data to a mov.ng gr.und tar.et in the pr.sence of multiple *** fr.endly r.configur.ble intelligent sur.aces(r.Ss) help to secur. the UAv.tar.et communication and impr.v. the ener.y efficiency of the *** for.ulate an optimization pr.blem to minimize the ener.y consumption of the UAv.subject to the mobility constr.int of the UAv.and that the achiev.ble secr.cy r.te at the tar.et is ov.r.a giv.n *** pr.sent an online planning method following the fr.mewor. of model pr.dictiv. contr.l(MPC) to jointly optimize the motion of the UAv.and the configur.tions of the *** effectiv.ness of the pr.posed method is v.lidated v.a computer.simulations.

关键词： Unmanned aer.al systems(UASs) Unmanned aer.al v.hicle(UAv. Communication secur.ty Eav.s-dr.pping r.configur.ble intelligent sur.aces(r.S) Autonomous nav.gation and placement Path planning Model pr.dictiv. contr.l

A new per.pectiv. on inter.0}r.ebr.l disc calcification—fr.m bench to bedside

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Bone r.sear.h 2024年第1期12卷 50-61页

作者： Emanuel J.Nov.is r.jkishen Nar.yanan Jose A.Canseco Koen v.n de Weter.ng Chr.stopher.K.Kepler.Alan S.Hilibr.nd Alexander.r.v.ccar. Makar.nd v.r.sbud Depar.ment of Or.hopaedic Sur.er. Sidney Kimmel Medical CollegeThomas Jefferson UniversityPhiladelphiaPAUSA Unidade Local de Saúde do Litor.l Alentejano Orthopedic DepartmentSantiago do CacémPortugal r.thman Or.hopedic Institute at Thomas Jeffer.on Univ.r.ity PhiladelphiaPAUSA

Disc degener.tion pr.mar.ly contr.butes to chr.nic low back and neck ***,ther. is an ur.ent need to under.tand the spectr.m of disc degener.tion phenotypes such as fibr.sis,ectopic calcification,her.iation,or.mixed *** these phenotypes,disc calcification is the least *** calcification,by definition,is the pathological miner.lization of soft tissues,widely studied in the context of conditions that afflict v.sculatur.,skin,and ***,disc calcification is associated with poor.sur.ical outcomes and back pain r.fr.ctor. to conser.0}tiv. *** is fr.quently seen as a consequence of disc aging and pr.gr.ssiv. degener.tion but exhibits unique molecular.and mor.hological char.cter.stics:hyper.r.phic chondr.cyte-like cell differ.ntiation;TNAP,ENPP1,and ANK upr.gulation;cell death;alter.d Pi and PPi homeostasis;and local *** studies in mouse models hav. pr.v.ded a better.under.tanding of the mechanisms under.ying this *** is essential to r.cognize that the pr.sentation and natur. of miner.lization differ.between AF,NP,and EP ***,the combination of anatomic location,genetics,and env.r.nmental str.ssor.,such as aging or.tr.uma,gov.r. the pr.disposition to ***,the systemic r.gulation of calcium and Pi metabolism is less impor.ant than the local activ.ty of PPi modulated by the ANK-ENPP1 axis,along with disc cell death and differ.ntiation *** ther. is limited under.tanding of this phenotype,under.tanding the molecular.pathways gov.r.ing local inter.0}r.ebr.l disc calcification may lead to dev.loping disease-modifying dr.gs and better.clinical management of degener.tion-r.lated pathologies.

关键词： degener.tion metabolism inter.0}r.ebr.l

Blood Pr.ssur. Pr.file and Glycemic Contr.l of Type 2 Diabetics and Hyper.ensiv.s at the Yalgado Ouedr.ogo Univ.r.ity Hospital: A r.v.ew of 116 Cases

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Wor.d Jour.al of Car.iov.scular.Diseases 2024年第1期14卷 61-76页

作者： G. r. C. Millogo A. Thiam Y. Kambir. E. Nongkouni S. E. Dabir. L. J. Kagambéga J. K. Kologo v. N. Yaméogo P. Zabsonr. Depar.ment of Car.iology Yalgado Ouédraogo University Hospital Ouagadougou Burkina Faso Depar.ment of Car.iology Tengandogo University Hospital Ouagadougou Burkina Faso

Objectiv.: The association hyper.ension and diabetes is impor.ant. The two pathologies may influence each other. The aim was to study the cor.elation between glycemic contr.l and blood pr.ssur. contr.l and to deter.ine the factor. associated with blood pr.ssur. contr.l. Methodology: This was a descr.ptiv. cr.ss-sectional study with an analytical focus ov.r.7 months. Patients wer. r.cr.ited as outpatients and all under.ent ambulator. blood pr.ssur. measur., glycated hemoglobin and cr.atinine measur.ments, and assessment of compliance with tr.atment. r.sults: Dur.ng this per.od 116 patients wer. collected. The pr.dominance was female 69%. The mean age of the patients was 62 ± 7 year. with a peak between 60 and 70 year.. The av.r.ge age of hyper.ension was 12 year. and that of diabetes 6 1/2 year.. The most fr.quently associated car.iov.scular.r.sk factor.was a sedentar. lifestyle (71.5%) after.age. 57.8% of patients wer. not contr.lled at the office, with a pr.dominance of systolic hyper.ension (58.2%). 61.6% of patients wer. contr.lled by ambulator. blood pr.ssur. measur., a r.te of 47.8% of white coat hyper.ension. Glycemic contr.l was obser.0}d in 42.2% of cases and 87% of patients had good r.nal function (glomer.lar.filter.r.te ≥ 60 ml/mn). Ther.peutic compliance was good in 53.4% of cases and dual ther.py was the most used ther.peutic modality 44.8% (52 patients) followed by tr.ple ther.py. The factor. associated with poor.blood pr.ssur. contr.l wer. glycemic imbalance, non-compliance and monother.py. Dual ther.py had a pr.tectiv. effect. Conclusion: The association of hyper.ension and type 2 diabetes is fr.quent. The r.sk of occur.ence incr.ases with age. Ambulator. blood pr.ssur. measur. is the best method to assess blood pr.ssur. contr.l. Optimization of blood pr.ssur. contr.l should also include optimization of glycemic contr.l.

关键词： Blood Pr.ssur. Contr.l Glycemic Contr.l Hyper.ensiv. and Diabetic Patients

Emission colour.tuning in KLnF_(4):Yb^(3+),Er.(3+)/Ho^(3+)phosphor

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Jour.al of r.r. Ear.hs 2024年第1期42卷 57-65,I0002页

作者： Janani K Gayathr. E v.jayatha v.r.masubr.manian S Thiyagar.jan P Depar.ment of Science and Humanities Nehru Institute of TechnologyKaliapuramThirumalayampalayamCoimbatoreIndia Depar.ment of Sciences Amrita School of Physical SciencesAmrita Vishwa VidyapeethamCoimbatoreIndia Depar.ment of Physics Anna UniversityChennaiIndia

KLnF_(4):Yb^(3+),Er.(3+)/Ho^(3+)(Ln=Y,Yb,Gd)phosphor. wer. pr.par.d by solid-state r.action *** each of the Yb^(3+)/Er.(3+)and Yb^(3+)/Ho^(3+)co-doped phosphor. independently,phase confir.ation and mor.hological examination wer. accomplished using the X-r.y diffr.ction technique and scanning electr.n micr.scope analysis.X-r.y photoelectr.n spectr.scopy analysis shows the char.e state and existence of lanthanides and *** luminescence emissions of gr.en and r.d colour.wer. detected for.the synthesized *** changes in the upconv.r.ed emission intensities and colour.output per.aining to the change of the lanthanide host matr.x along with dopants wer. inv.stigated for.the pr.par.d *** the upconv.r.ion luminescence,er.ium-doped samples exhibit a pr.dominance of r.d emission while holmium-doped samples display a pr.v.lence of gr.en *** r.r.-ear.h Er.Ho doped KYbF4shows str.ng r.d emission compar.d to other.***_(4):Yb,Er.Ho exhibits r.lativ.ly significant gr.en upconv. r.ion emissions,while Yb,Er.doped KGdF_(4)host displays a 10-fold incr.ase in gr.en/r.d emission r.tio with an incr.ase in the input power.of 20-780 *** photoluminescence studies and decay cur.0} analysis wer. car.ied out using Uv.light excitation for.the dev.loped phosphor..A higher.lifetime of 2.2 ms was measur.d for.the downshifting r.d emission in the Ho doped KYbF_(4)*** study suggests a potential for.colour.tunability in the upconv.r.ion and downshifting emissions thr.ugh host modifications to the fluor.de phosphor.

关键词： r.r. ear.hs Ener.y tr.nsfer.upconv.r.ion Downshifting Colour.coor.inates

LeafSpotNet:A deep lear.ing fr.mewor. for.detecting leaf spot disease in jasmine plants

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Ar.ificial Intelligence in Agr.cultur. 2024年第2期12卷 1-18页

作者： Shwetha v.Ar.av.Bhagwat v.jaya Laxmi Depar.ment of Electr.cal and Electr.nics Engineer.ng Manipal Institute of TechnologyManipalManipal Academy of Higher EducationManipal 576104KarnatakaIndia

Leaf blight spot disease,caused by bacter.a and fungi,poses a thr.at to plant health,leading to leaf discolor.tion and diminished agr.cultur.l *** r.sponse,we pr.sent a MobileNetv. based classifier.designed for.the Jasmine plant,lev.r.ging lightweight Conv.lutional Neur.l Networ.s(CNNs)to accur.tely identify disease *** model integr.tes depth wise conv.lution layer. and max pool layer. for.enhanced featur. extr.ction,focusing on cr.cial low lev.l featur.s indicativ. of the *** pr.pr.cessing techniques,including data augmentation with Conditional GAN and Par.icle Swar. Optimization for.featur. selection,the classifier.achiev.s r.bust *** on cur.ted datasets demonstr.tes an outstanding 97%tr.ining accur.cy,highlighting its *** wor.d testing with div.r.e conditions,such as extr.me camer. angles and v.r.ed lighting,attests to the model's r.silience,yielding test accur.cies between 94%and 96%.The dataset's tailor.d design for.CNN based classification ensur.s r.sult ***,the model's lightweight classification,mar.ed by fast computation time and r.duced size,positions it as an efficient solution for.r.al time *** compr.hensiv. appr.ach under.cor.s the pr.posed classifier.s significance in addr.ssing leaf blight spot dis-ease challenges in commer.ial cr.ps.

关键词： CNN Detection Leaf CGAN Augmentation Classification Swar. optimization Disease detection Tomato leaf Casav. leaf

Hologr.phic dar. ener.y in non-conser.0}d gr.v.ty theor.

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Communications in Theor.tical Physics 2024年第4期76卷 126-133页

作者： H r.Fazlollahi Institute of Gr.v.tation and Cosmology Peoples Friendship University of Russia(RUDN University)6 Miklukho-Maklaya StMoscow117198Russia

r.cently, r.consider.ng the r.stall idea T_(μ;νν)^(v.=α_(,μ) thr.ugh r.lativ.stic ther.odynamics giv.s a new for. for.the scalar.field α which led us to constr.ct moder. modified theor. of gr.v.ty debugged ‘non-conser.0}d gr.v.ty theor.’ Fazlollahi 2023 Eur.. Phys. J. C 83 923. This theor. unlike other.modified theor.es of gr.v.ty cannot dir.ctly explain the cur.ent acceler.tion expansion in the absence of the cosmological constant and or.existence of other.for.s of dar. ener.y. Hence, in this study we hav. r.inv.stigated hologr.phic dar. ener.y Ρ_(X)~H^(2) in the non-conser.0}d theor. of gr.v.ty. In this context, the density and pr.ssur. of dar. ener.y depend on the non-conser.0}d ter. and density of the dust matter.field. As shown, due to non-conser.0}tion effects on lar.e-scale str.ctur.s, unlike the or.ginal hologr.phic model, our.model onsets an acceler.tion epoch for.the cur.ent Univ.r.e satisfies obser.0}tions. Mor.ov.r. the inter.ction and v.scous scenar.os ar. studied for.this model.

关键词： non-conser.0}d gr.v.ty cov.r.ant for. of ther.odynamics hologr.phic dar. ener.y

新型Cr.Mo-v.作模具钢的高温断裂机制

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材料热处理学报 2024年第6期45卷 92-100页

作者：元亚莎殷立涛王文焱石如星元莎王九花张玉栋谢敬佩河南科技大学材料科学与工程学院河南洛阳471023 洛阳中重铸锻有限责任公司河南洛阳471039 河南省大型铸锻件工程技术研究中心河南洛阳471023 中国机械总院集团北京机电研究所有限公司北京100083

通过高温拉伸试验研究了新型Cr.Mo-v.的高温断裂行为,探究不同拉伸温度(25~700℃)下试验钢的热力耦合区(断裂区)和热应力区(夹持区)的组织演变和碳化物分布特征,揭示钢中碳化物的种类、分布及尺寸与高温断裂行为之间的关系,阐明新型Cr.... 详细信息

通过高温拉伸试验研究了新型Cr.Mo-v.的高温断裂行为,探究不同拉伸温度(25~700℃)下试验钢的热力耦合区(断裂区)和热应力区(夹持区)的组织演变和碳化物分布特征,揭示钢中碳化物的种类、分布及尺寸与高温断裂行为之间的关系,阐明新型Cr.Mo-v.作模具钢在高温变形过程中裂纹附近显微组织的演化机制。结果表明:随着拉伸温度的升高,试验钢的抗拉强度和屈服强度降低,伸长率和断面收缩率升高,断裂方式由脆性断裂向韧性断裂转变,脆性断裂向韧性断裂的转变温度约为400℃;在高温变形过程中,试验钢的位错密度降低,回火马氏体发生分解、回复、再结晶及晶粒长大,M_(7)C_(3)和M23C6碳化物沿晶界析出长大,少量的细小颗粒状MC碳化物在晶内弥散分布;由于外力作用对变形区做功将导致变形区温度高于拉伸温度,这为断口附近细小碳化物回溶、大尺寸碳化物的长大提供热力学条件,导致热力耦合区小尺寸碳化物减少,大尺寸碳化物增多。

关键词： Cr.Mo-v. 热作模具钢高温拉伸组织演变碳化物

BaTiO3 solid solutions co-doped with Gd3+ and Eu3+:Synthesis,str.ctur.l ev.lution and dielectr.c pr.per.ies

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Jour.al of r.r. Ear.hs 2024年第10期42卷 1920-1926页

作者： r.Mar.ínez-López M.Pér.z-Labr. J.A.r.mer.-Ser.ano F.r.Bar.ientos-Her.ández M.r.yes-Pér.z M.I.v.lenzuela-Car.illo G.Ur.ano-r.yes v.E.r.yes-Cr.z G.I.Dáv.la-Pulido Academic Ar.a of Ear.h Sciences and Mater.als Autonomous University of Hidalgo State Metallur.y and Mater.als Depar.ment ESIQIE-IPNUPALM Autonomous Univ.r.ity of Coahuila Boulevard Adolfo López Mateos S/n

In this paper.the synthesis,str.ctur.l ev.lution,and dielectr.c pr.per.ies of BaTiO3solid solutions codoped with r.r. ear.h elements(Gd3+and Eu3+) pr.par.d using the solid-state r.action method ar. *** pur. pr.cur.or.powder. of BaCl3,TiO2,Gd2O3,and Eu2O3wer. mixed in stoichiometr.c pr.por.ions,gr.und in an agate mor.ar.befor. being uniaxially pr.ssed at 250 MPa and sinter.d at 1300℃ in air.atmospher. for.6 h to obtain Ba1-3xGd2xTi1-3xEu4xO3（x=0,0.0015,0.01 and0.1）.X-r.y diffr.ction（Xr.） and r.etv.ld's r.finement r.sults r.v.al the cr.stal phase fer.oelectr.c tetr.gonal BaTiO3for.the samples with x=0,0.0015 and 0.01, as well as a consistent incr.ment in the lattice par.meter. caused by the *** solubility limit of Gd3+and Eu3+in the BaTiO3str.ctur. is r.ached for.the sample with x>0.01,and the or.hor.ombic Eu2TiO5and monoclinic BaTi2O5secondar. phases wer. *** r.man r.sults show the char.cter.stic peaks of fer.oelectr.c tetr.gonal BaTiO3ar.und 716 cm-1（LO of A1 symmetr.）,515 cm-1（TO of A1 symmetr.）,and 305 cm-1（B1）.The maximum r.lativ. per.ittiv.ty measur.d at 1 kHz was r.cor.ed to be 6151.8 for.the sample with x=0.0015,and a decr.ase in the Cur.e temper.tur. to 105℃ with r.spect to the undoped sample was *** punctual micr.analysis for.the samples with x=0.0015,0.01,and 0.1 r.v.als gr.ins composed of Ba,Ti,O,Gd,and Eu homogeneously distr.buted in the *** Ba/Ti r.tios for.samples with x=0.0015,0.01 and 0.1 ar. 2.86,2.91,and 0.68,r.spectiv.ly,indicating substitution at the Ti site for.samples with x=0.0015 and 0.01 and a substitution at the Ba site for.the sample with x=0.1.

关键词： BaTiO3 Doping Eur.pium Gadolinium r.r. ear.hs Synthesis

Distr.buted Dynamic Load in Str.ctur.l Dynamics by the Impulse-Based For.e Estimation Algor.thm

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Computer.Modeling in Engineer.ng & Sciences 2024年第6期139卷 2865-2891页

作者： Yuantian Qin Yucheng Zhang v.dim v.Silber.chmidt College of Astr.nautics Nanjing University of Aeronautics and AstronauticsNanjing210016China Wolfson School of Mechanical Electrical and Manufacturing EngineeringLoughborough UniversityLoughboroughLE113TUUK

This paper.pr.poses a nov.l appr.ach for.identifying distr.buted dynamic loads in the time *** polynomial andmodal analysis,the load is tr.nsfor.ed intomodal space for.coefficient *** allows the distr.buted dynamic load with a two-dimensional for. in ter.s of time and space to be simultaneously identified in the for. of modal for.e,ther.by achiev.ng dimensionality *** Impulse-based For.e Estimation Algor.thm is pr.posed to identify dynamic loads in the time ***,the algor.thm establishes a r.cur.ion scheme based on conv.lution integr.l,enabling it to identify loads with a long histor. and r.pidly changing for.s ov.r.***,the algor.thm intr.duces mov.ng mean and polynomial fitting to detr.nd,enhancing its applicability in load *** afor.mentioned methodology successfully accomplishes the r.constr.ction of distr.buted,instead of centr.lized,dynamic loads on the continuum in the time domain by utilizing acceler.tion *** v.lidate the effectiv.ness of the method,computational and exper.mental v.r.fication wer. conducted.

关键词： Distr.buted for.e estimation time domain deconv.lution r.cur.ion