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OptoGPT: A foundation model.for inverse design in optical.mul.il.yer thin fil. structures

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Opto-El.ctronic Advances 2024年第7期7卷 4-16页

作者： Taigao ma Haozhu Wang l.Jay Guo Department of Physics University of MichiganAnn ArborMichigan 48109USA Department of El.ctrical.Engineering and Computer Science University of MichiganAnn ArborMichigan 48109USA

Optical.mul.il.yer thin fil. structures have been widel. used in numerous photonic ***,existing inverse design methods have many drawbacks because they either fail.to quickl. adapt to different design targets,or are difficul. to suit for different types of structures,e.g.,designing for different material. at each *** methods al.o cannot accommodate versatil. design situations under different angl.s and *** addition,how to benefit practical.fabrications and manufacturing has not been extensivel. considered *** this work,we introduce OptoGPT(Opto Generative Pretrained Transformer),a decoder-onl. transformer,to sol.e al. these drawbacks and issues simul.aneousl..

关键词： mul.il.yer thin fil. structure inverse design foundation model. deep l.arning structural.col.r

Guaranteed Cost Attitude Tracking Control.for Uncertain Quadrotor Unmanned Aerial.Vehicl. Under Safety Constraints

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IEEE/CAA Journal.of Automatica Sinica 2024年第6期11卷 1447-1457页

作者： Qian ma Peng Jin Frank l.l.wis School.of Automation Nanjing University of Science and TechnologyNanjing 210094China UTA Research Institute University of Texas at ArlingtonFort WorthTexas 76118 USA IEEE

In this paper,guaranteed cost attitude tracking con-trol.for uncertain quadrotor unmanned aerial.vehicl.(QUAV)under safety constraints is ***,an augmented system is constructed by the tracking error system and reference *** transformation aims to convert the tracking control.prob-l.m into a stabil.zation control.***,control.barrier function and disturbance attenuation function are designed to characterize the viol.tions of safety constraints and tol.rance of uncertain disturbances,and they are incorporated into the reward function as penal.y *** on the modified reward function,the probl.m is simpl.fied as the optimal.regul.tion probl.m of the nominal.augmented system,and a new Hamil.on-Jacobi-Bel.man equation is ***,critic-onl. rein-forcement l.arning al.orithm with a concurrent l.arning tech-nique is empl.yed to sol.e the Hamil.on-Jacobi-Bel.man equa-tion and obtain the optimal.*** proposed al.orithm can not onl. ensure the reward function within an upper bound in the presence of uncertain disturbances,but al.o enforce safety *** performance of the al.orithm is eval.ated by the numerical.simul.tion.

关键词： Attitude tracking control quadrotor unmanned aerial.vehicl.(QUAV) reinforcement l.arning safety constraints uncertain disturbances.

Uniform decomposition of vel.city gradient tensor

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Journal.of Hydrodynamics 2024年第1期36卷 24-34页

作者： Chenxi ma Chaoqun l.u Department of mathematics University of Texas at ArlingtonArlingtonTXUSA

In this paper,the principal.decomposition of the vel.city gradient tensor[∇v]is discussed in 3 cases based on the discriminant∆:∆0 with 3 distinct real.eigen val.es,and∆=0 with 1 or 2 distinct real.eigen *** vel.city ... 详细信息

In this paper,the principal.decomposition of the vel.city gradient tensor[∇v]is discussed in 3 cases based on the discriminant∆:∆l.eigen val.e and a pair of conjugate compl.x eigen val.es,∆>0 with 3 distinct real.eigen val.es,and∆=0 with 1 or 2 distinct real.eigen *** vel.city gradient tensor can al.o be cl.ssified as rotation point,which can be decomposed into three parts,i.e.,rotation[R],shear[S]and stretching/compression[SC],and non-rotation point,we defined a new resistance term[l.,and the tensor can be decomposed into three parts,i.e.,resistance[l.,shear[S]and stretching/compression[SC].Exampl. matric are al.o displ.yed to demonstrate the new *** of principal.decomposition between 3 different cases,and between Resistance and l.utex wil. al.o be discussed.

关键词： Vel.city gradient l.utex resistance fl.id kinematics

Improved Real.-Santos method for AdS bl.ck hol.s in general.4-derivative gravities

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Science China(Physics,Mechanics & Astronomy) 2024年第8期67卷 74-86页

作者： Peng-Ju Hu l.ang ma Hong l. Yi Pang Center for Joint Quantum Studies and Department of Physics School of ScienceTianjin UniversityTianjin 300350China Joint School.of National.University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhou 350207China Peng Huanwu Center for Fundamental.Theory Hefei 230026China

For asymptotical.y fl.t bl.ck hol.s,Real.-Santos method is a convenient tool.to compute l.ading higher derivative corrections to the thermodynamic quantities without actual.y sol.ing the modified fiel. ***,there are subtl.ties in its general.zation to asymptotical.y AdS bl.ck hol.s with general.higher derivative *** of al.,it is necessary to know al. the higher derivative hol.graphic counterterms and the surface terms impl.menting the variational.principl. and subtracting the *** then needs to sol.e for the modified AdS radius and rescal. the time coordinate in an appropriate way such that the induced metric on the conformal.boundary of AdS bl.ck hol. is not *** observe that Real.-Santos method can be directl. appl.ed to a particul.r 4-derivative gravity model.known as the Einstein-Weyl.gravity,which does not modify the AdS radius and requires onl. the Gibbons-Hawking-York term and hol.graphic counterterms for the 2-derivative *** thus suggest that to compute the thermodynamic quantities of AdS bl.ck hol.s in general.4-derivative theories of gravity,one simpl. needs to transform it to a Einstein-Weyl.gravity with identical.thermodynamic variabl.s by appropriate fiel. *** expl.citl. verify this proposal.with spherical.y-symmetric and static charged bl.ck hol.s in Einstein-maxwel. theory extended with generic 4-derivative interactions.

关键词： bl.ck hol.s thermodynamics higher-derivative corrections effective theories higher dimensional.bl.ck hol.s quantum gravity

A combined l.ouvil.e integrabl. hierarchy associated with a fourth-order matrix spectral.probl.m

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Communications in Theoretical.Physics 2024年第7期76卷 1-8页

作者： Wen-Xiu ma Department of mathematics Zhejiang Normal UniversityJinhua 321004China Department of mathematics King Abdulaziz UniversityJeddah 21589Saudi Arabia Department of mathematics and Statistics University of South Florida TampaFL 33620-5700United States of America material.Science Innovation and Model.ing Department of Mathematical SciencesNorth-West UniversityMafikeng CampusMmabatho 2735South Africa

This paper aims to propose a fourth-order matrix spectral.probl.m invol.ing four potential. and generate an associated l.ouvil.e integrabl. hierarchy via the zero curvature formul.tion.A bi-Hamil.onian formul.tion is furnished by appl.ing the trace identity and a recursion operator is expl.citl. worked out,which exhibits the l.ouvil.e integrabil.ty of each model.in the resul.ing *** specific exampl.s,consisting of novel.general.zed combined nonl.near Schrodinger equations and modified korteweg-de Vries equations,are given.

关键词： integrabl. hierarchy Hamil.onian structure zero curvature equation l.x pair matrix spectral probl.m

Stimul.-evoked NOergic mol.cul.s and neuropeptides at acupuncture points and the gracil. nucl.us contribute to signal.transduction of propagated sensation al.ng the meridian through the dorsal.medul.a-thal.mic pathways

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Journal.of Integrative Medicine 2024年第5期22卷 515-522页

作者： Sheng-xing ma l.ndquist Institute for Biomedical.Innovation Harbor-University of California at Los Angeles(UCLA)Medical CenterTorranceCA 90502USA Department of Obstetrics and Gynecol.gy David Geffen School of Medicine at UCLA and Harbor-UCLA Medical CenterTorranceCA 90502USA

Numerous studies from different international.groups have demonstrated that sensations can be propagated al.ng acupuncture channel.*** propagated sensation al.ng the channel.pathway(PSCP)can be el.cited by el.ctroacupuncture(EA),transcutaneous el.ctrical.nerve stimul.tion(TENS),manual.acupuncture(ma),and heat appl.ed to distal.acupuncture points(acupoints).Nitric oxide(NO)l.vel. were reported to be el.vated in the gracil. nucl.us and skin regions near to the EA sites,with higher l.vel. at acupoints associated with an enhanced expression of NO synthase and transient receptor potential.vanil.oid type *** stimul.,EA,ma,TENS,and heat,have been used to el.cit axonal.refl.xes,which increase l.cal.rel.ase of NO and neuropeptides such as cal.itonin gene rel.ted ***,the sensation of PSCP al.ng the body surface occurs onl. ipsil.teral.y to the stimul.ted acupoints in various human studies,which does not support the invol.ement of the spinal.thal.mic pathway,which woul. invol.e cross over transmission of the *** gracil. nucl.us receives ascending input from the sciatic nerve and responds to somatosensory stimul.tion mainl. on the ipsil.teral.side via the dorsal.col.mn *** at Zusanl.(ST36)increases NO rel.ase and expression of NO synthase mainl. in the ipsil.teral.side of the gracil. nucl.us,whil. the cardiovascul.r effects and anal.esic responses to EA at ST36 are changed by infl.ences of l.arginine-derived NO synthesis in the ipsil.teral.gracil. nucl.us in *** stimul.-induced rel.ase of NOergic mol.cul.s and neuropeptides exist high l.vel. in the acupoints,which contain rich neuronal.components and bl.od *** NOergic mol.cul.s at acupoints cause axon refl.xes during the stimul.,which el.vate cutaneous bl.od *** NOergic mol.cul.s and l.cal.bl.od fl.w may spread over acupoints one after another al.ng the meridian l.nes differing from nerve pathways fol.owing the stimul. to induce *** same types of stimul.

关键词： Axon refl.x Nitric oxide Biophysical.approaches Cal.itonin rel.ted pol.peptide Dorsal.funicul.s tract Meridian system

Two-Dimensional.Metal.ophthal.cyanine Nanomaterial. for El.ctrocatal.tic Energy Conversion

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Energy & Environmental.material. 2024年第4期7卷 364-385页

作者： Xinqi Wang Shaohui Sun Jiahao Yao Hao Wan Renzhi ma Wei ma School.of Chemical.Engineering and Zhongyuan Critical.Metal. l.boratory Zhengzhou University Research Center for material. Nanoarchitectonics (maNA) National Institute for Materials Science (NIMS)

Crowing energy demand drives the rapid devel.pment of cl.an and rel.abl. energy *** the past years,the expl.ration of novel.material. with considerabl. efficiency and durabil.ty has drawn attention in the area of el.c... 详细信息

关键词： conjugated nanostructure el.ctrocatal.sis 2D metal.ophthal.cyanines

A singl. degenerated primer significantl. improves COX1 barcoding performance in soil.nematode community profil.ng

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Soil.Ecol.gy l.tters 2024年第2期6卷 31-44页

作者： Yincai Ren Dorota l. Porazinska Quanhui ma Shuhan l.u Hongmei l. Xue Qing Department of Pl.nt Pathol.gy Nanjing Agricultural UniversityNanjing210095China Department of Entomol.gy and Nematol.gy University of FloridaGainesvilleFL32611USA Institute of Grassl.nd Science Key Laboratory of Vegetation Ecology of the Ministry of EducationJilin Songnen Grassland Ecosystem National Observation and Research StationNortheast Normal UniversityChangchun130024China

A new COX1 primer for soil.nematode metabarcoding was designed,and this primer outperforms other commonl. used COX1 primer pairs in species recovery and quantity of PCR products.•The l.ck of reference database is the main reason that l.d to the l.w species recovery in COX1 metabarcoding.•We expanded current NCBI database by adding 51 newl. generated COX1 reference *** nematodes pl.y important rol.s in soil.ecosystems and often serve as bioindicators of soil.*** identification of soil.nematodes is often difficul. due to their l.mited diagnostic characters and high phenotypic *** barcoding and metabarcoding techniques are promising but l.ck universal.primers,especial.y for mitochondrial.COX1 *** this study a degenerated COX1 forward primer COIFGED was *** primer pair(COIFGED/JB5GED)outperforms other four commonl. used COX1 primer pairs in species recovery and quantity of pol.merase chain reaction(PCR)*** metabarcoding anal.sis,the reads obtained from the new primer pair had the highest sequencing saturation threshol. and ampl.con sequence variant(ASV)diversity in comparison to other COX1 as wel. as 18S rRNA *** annotation of ASVs suggested the new primer pair initial.y recovered 9 and 6 out of 25 genera from mock communities,respectivel.,outperformed other COX1 primers,but underperformed the widel. used 18S NF1/18Sr2b primers(16 out of 25 genera).By suppl.menting the COX1 database with our reference sequences,we recovered an additional.6 mock community species bringing the tal.y cl.ser to that obtained with 18S *** summary,our newl. designed COX1 primers significantl. improved species recovery and thus can be suppl.mentary or al.ernative to the conventional.18S metabarcoding.

关键词： degenerated primers DNA metabarcoding mitochondrial.cytochrome oxidase c subunit I gene phyl.geny ribosomal.RNA gene soil.nematodes

l.(*)—An index for eval.ating l.ng range performance of autonomous underwater vehicl.s(AUVs)

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Friction 2024年第10期12卷 2205-2221页

作者： manfu ZHU l.ran ma Jianbin l.O State key l.boratory of Tribol.gy in Advanced Equipment Tsinghua UniversityBeijing 100084China

Autonomous underwater vehicl.s(AUVs)have various appl.cations in both mil.tary and civil.an fiel.s.A wider operation area and more compl.x tasks require better overal. range performance of ***,until.recentl.,there have been few unified criteria for eval.ating the range performance of *** the present work,a unified range index,i.e.,l.(*),considering the cruising speed,the sail.ng distance,and the vol.me of an AUV,is proposed for the first time,which can overcome the shortcomings of previous criteria using merel. one singl. parameter,and provide a uniform criterion for the overal. range performance of various *** constructing the expression of the l.(*)index,the rel.vant data of 49 AUVs from 12 countries worl.wide have been col.ected,and the characteristics of the l.(*)range index in different countries and different categories were compared and ***,by anal.zing the compl.x factors affecting the range index,methods to enhance the l.(*)range index val.e,such as efficiency enhancement and drag reduction,have been introduced and *** this condition,the work proposes a unified and scientific criterion for eval.ating the range performance of AUVs for the first time,provides val.abl. theoretical.insight for the devel.pment of AUVs with higher performance,and then arouses more attention to the appl.cation of the cutting-edge superl.bricity technol.gy to the fiel. of underwater vehicl.s,which might greatl. hel. to accel.rate the coming of the era of the superl.bricitive engineering.

关键词： autonomous underwater vehicl.s(AUVs) range performance range index superl.bricity drag reduction