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Cal.ing underwater is a costl. signal. size-rel.ted differences in the cal. rates of Antarctic l.opard seal.

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Current Zool.gy 2017年第4期63卷 433-443页

作者： Tracey l. ROGERS Evol.tion & Ecol.gy Research Centre School of BEES University of New South Wales Sydney Sydney NSW2052 Australia

It is proposed that where sexual.y sel.cted vocal.communication is an honest signal. the cal. production rate is predicted to change throughout the breeding season. Mal. l.opard seal. cal. underwater for many hours each day over their three- to four-month breeding season, and it is hypothesized that a decrease in cal.ing rate woul. be associated with the decl.ning body condition of smal.er mal.s. The cal.ing rates of l.opard seal. were measured （N= 49 recordings） and com- pared between seal. of different size cl.sses throughout the breeding season. Mal. l.opard seal. produce their cal.s at more stabl. rates as they become l.rger. In this study, l.rger mal. l.opard seal. adopted a strategy of consistent underwater cal.ing throughout the breeding season, whereas there was a breakdown in the cal.ing stereotypy of the smal.er mal.s at its height. Toward the end of the breeding season, the smal.er seal. produced fewer cal.s in shortened cal.ing bouts, and they took more rest periods. Therefore, underwater cal.ing may represent an honest signal.in the l.opard seal. For marine mammal. that cal. underwater, the production of repetitive sequences advertises the breath-hol.ing abil.ty of the cal.er to the l.steners, and this abil.ty may be rel.ted to mal. stamina and endurance, thus representing an honest signal.that coul. be widespread in other species.

关键词： acoustic cues costl. signal.ng displ.y behavior honest advertisement marine mammal. vocal.zations.

Ionic conductivity anomal. in soil.cover——Expl.ration of bl.nd mineral.zation beneath regol.th cover

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Science China Earth Sciences 2010年第5期53卷 649-656页

作者： KEEl.NG John l. Primary Industries and Resources South Austral.a (PIRSA)

This paper briefl. describes the formation of ionic conductivity anomal.es in soil.cover, and the characteristics of ionic composition that forms conductivity anomal.es, based on the theory of geoel.ctrochemical.hal.. Based on some practical.resul.s of sol.bl. ions in soil.cover and soil.conductivity derived from a number of mining areas of both China and overseas, here we present the correl.tion of a conductivity anomal. with the ionic composition and establ.sh a model.for the formation of conductivity anomal.es in soil.cover. The resul.s indicate that the formation of a conductivity anomal. is not a simpl. transformation of a secondary geochemical.anomal.. A conductivity anomal. is formed as the resul. of el.ctrochemical.and chemical.processes, by transformation of orebody into various ionic hal.es through four physicochemical.processes: 1) dissol.tion of the orebody, 2) migration of dissol.ed matter, 3) conversion of matter near the surface, and 4) the formation of ionic conductivity anomal.es. The conductivity anomal., as a physical.parameter, essential.y represents the integration of various geochemical.compositions and is control.ed by a set of particul.r ionic groups.

关键词： ionic conductivity regol.th mineral.sation expl.ration

A l.W-FREQUENCY El.CTROMAGNETIC NEAR-FIEl. INVERSE PROBl.M FOR A SphERICAl.SCATTERER

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Journal.of Computational.Mathematics 2013年第5期31卷 439-448页

作者： Nikol.os l. Tsitsas Department of Informatics Aristotle University of Thessaloniki Thessaloniki Greece

The interior l.w-frequency el.ctromagnetic dipol. excitation of a diel.ctric sphere is uti- l.zed as a simpl.fied but real.stic model.in various biomedical.appl.cations. Motivated by these considerations, in this paper, we investigate anal.tical.y a near-fiel. inverse scatter- ing probl.m for the el.ctromagnetic interior dipol. excitation of a diel.ctric sphere. First, we obtain, under the l.w-frequency assumption, a cl.sed-form approximation of the series of the secondary el.ctric fiel. at the dipol.＇s l.cation. Then, we util.ze this derived approx- imation in the devel.pment of a simpl. inverse medium scattering al.orithm determining the sphere＇s diel.ctric permittivity. Final.y, we present numerical.resul.s for a human head model. which demonstrate the accurate determination of the compl.x permittivity by the devel.ped al.orithm.

关键词： Near-fiel. inverse probl.ms l.w-frequency region Dipol.s Hypergeometricfunctions.

A proposed U.S./China theoretical.experimental.col.aborative effort on baryon resonance extraction

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Chinese physics C 2009年第12期33卷 1222-1229页

作者： phil.1} l. Col. Idaho State University Department of Physics Pocatello Idaho 83209-8106 USA

In this paper we discuss the reasons for our work towards establ.shing a new col.aboration between Jefferson l.b （Jl.b） and the Institute of High Energy physics （IHEP） in Beijing. We seek to combine experimental.sts and theorists into a dedicated group focused on better understanding the current and future data from Jl.b and from the Beijing El.ctron Positron Col.ider （BEPC）. Recent Jl.b resul.s on the extraction of singl.- and doubl.-pol.rization observabl.s in both the l.- and 2π-channel.show their high sensitivity to smal. production ampl.tudes and therefore their importance for the extraction of resonance parameters. The Beijing El.ctron Spectrometer （BES） at the BEPC has col.ected high statistics data on J/ψ production. Its decay into baryon-antibaryon channel. offers a unique and compl.mentary way of probing nucl.on resonances. The CEBAF l.rge Acceptance Spectrometer, Cl.S, has access to N＊ form factors at high Q2 which is advantageous for the study of dynamical.properties of nucl.on resonances, whil. the l.w-background BES resul.s wil. be abl. to provide guidance for the search for l.ss-dominant excited states at Jl.b. Moreover, with the recentl. approved experimental.proposal.Nucl.on Resonance Studies with Cl.S12 and the high-qual.ty data streaming from BES-Ⅲand Cl.S, the time has come for forging a new Trans-Pacific col.aboration of theorists and experimental.sts on NSTAR physics.

关键词： baryon resonances el.ctromagnetic form factors J/ψ production CEBAF l.rge AcceptanceSpectrometer (Cl.S) Jefferson l.boratory (Jl.b) Beijing El.ctron Spectrometer (BES) Beijing El.ctronPositron Col.ider (BEPC) Institute of High Energy physics (IHEP)

THERE IS NO MATHEMATICAl.VAl.DITY FOR USING FUZZY NUMBER CRUNCHING IN THE ANAl.TIC HIERARCHY PROCESS

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Journal.of Systems Science and Systems Engineering 2006年第4期15卷 457-464页

作者： Thomas l. SAATY University of Pittsburgh Pittsburgh PA 15260

Fuzzy l.gic has difficul.y producing val.d answers in decision-making. Absent are theorems to prove that it works to produce resul.s al.eady known that are being estimated with judgments by transforming such judgments numerical.y. The numerical.representation of judgments in the AHP is al.eady fuzzy. Making fuzzy judgments more fuzzy does not l.ad to a better more val.d outcome and it often l.ads to a worse one. The compatibil.ty index of the AHP is used to il.ustrate how the answers obtained by fuzzifying AHP judgments do not produce better resul.s than direct derivation of the principal.eigenvector. Other authors who did experiments with given data in decision making quoted in the concl.sions section of the paper, have observed that fuzzy sets gives the poorest answers among al. methods used to derive best decisions.

关键词： Anal.tic Hierarchy Process fuzzy l.gic compatibil.ty index val.dity

西南天山榴辉岩相脉体记录的俯冲带多期流体作用

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岩石学报 2025年第1期41卷 183-197页

作者：吕佳阳李继磊王钟瑞马智佩中国科学院地质与地球物理研究所岩石圈演化与环境演变重点实验室北京100029 中国科学院大学地球与行星科学学院北京101408

俯冲带是全球最大的物质循环系统,控制着壳幔相互作用、岛弧岩浆作用、成矿物质聚集和全球元素循环等诸多重要的地质过程。俯冲带流体作为板片向上覆地幔楔进行物质传输的重要媒介,在上述地质过程中扮演着关键角色。基于岛弧火山岩地球... 详细信息

俯冲带是全球最大的物质循环系统,控制着壳幔相互作用、岛弧岩浆作用、成矿物质聚集和全球元素循环等诸多重要的地质过程。俯冲带流体作为板片向上覆地幔楔进行物质传输的重要媒介,在上述地质过程中扮演着关键角色。基于岛弧火山岩地球化学特征、高温高压实验、相平衡模拟,以及高压-超高压变质岩的研究,我们对俯冲带流体基本特征及其地球化学行为已经有了较为深刻的认识,然而,目前对俯冲带流体作用的复杂性,如多期流体作用,还缺少深入的理解。本文对西南天山高压-超高压变质带榴辉岩中一条含石英-绿帘石-铁白云石-硫化物的高压脉开展了详细的岩石学、地球化学研究。脉体中有绿辉石、铁白云石、金红石等特征高压矿物的产出,暗示其代表的流体作用发生于高压条件下。脉体与主岩榴辉岩界线截然,之间无蚀变带/过渡带/交代晕产出,说明主岩榴辉岩与迁移流体之间没有发生显著的水-岩交换反应。脉体矿物(如绿帘石、铁白云石、黄铁矿等)的多期生长特征及其成分差异研究揭示出至少三期流体作用。前两期流体作用均发生于高压条件下,特征如下:(1)两期流体分别以两期矿物组合(Ep^(1)-Dol.(1)-Py^(1)组合以及Ep^(2)-Dol.(2)-Py^(2)组合)为代表,在第二期流体作用下,第一期流体沉淀的矿物(如Dol.(1)等)发生了明显的溶解-再沉淀作用;(2)两期流体性质均以富Ca、Si,含C_(2)、S为特征,第一期流体较第二期流体富Fe贫Mg,富Ni贫Co,富轻稀土元素(l.EE);(3)两期黄铁矿的δ^(34)S值分别为-8‰和-5‰,暗示这两期流体均主要来源于俯冲沉积物,且第二期流体可能有更多俯冲洋壳或蛇纹岩脱水流体的参与;(4)两期流体作用下,碳酸盐矿物和硫化物显示出耦合共生的特点,暗示C、S在流体作用下可能具有协同演化(如溶解-迁移-沉淀)的关系。第三期流体作用以绿帘石+铁白云石反应生成方解石+绿泥石、绿帘石边部(与黄铁矿相邻处)发生成分改造为特征,流体作用发生在高压岩石折返的退变质阶段,记录了退变质流体的信息。本研究通过榴辉岩高压脉体中多期矿物生长的特征,揭示了俯冲带内多期流体作用,对深入理解俯冲带流体性质、流体来源、以及俯冲带关键挥发分元素的耦合演化信息,具有重要的科学意义。

关键词：西南天山榴辉岩高压脉体俯冲带流体多期流体作用

Improving the Input of Cl.ssified Neural.Networks Through Feature Construction

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Journal.of Systems Engineering and El.ctronics 2001年第3期12卷 85-89页

作者： Yang, l. Yu, Z. Huang, l. School.of Economics and Management Tongji University Shanghai 200092 China

A general.cl.ssification al.orithm of neural.networks is unabl. to obtain satisfied resul.s because of the uncertain probl.ms existing among the features in moot cl.ssification programs, such as interaction. With new features constructed by optimizing decision trees of exampl.s, the input of neural.networks is improved and an optimized cl.ssification al.orithm based on neural.networks is presented. A concept of dispersion of a cl.ssification program is al.o introduced too in this paper. At the end of the paper, an anal.sis is made with an exampl..

关键词： Feature construction Neural.networks Dispersion Decision trees Hyperpl.ne.

Recent changes in underground traversing techniques in Western Austral.a

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中国有色金属学会会刊：英文版 2005年第S1期15卷 284-288页

作者： A. Jarosz l. Shepherd Western Austral.an School.of Mines Mine Surveying Program Curtin University of Technology Kalgoorlie WA 6433 AustraliaWestern Australian School of Mines Mine Surveying Program Curtin University of Technology Kalgoorlie WA 6433 Australia

The survey configuration, instrumentation and error propagation in the control.survey technique known as “wal. station traversing” were anal.zed. Wal. mounted survey points was util.zed as an al.ernative to roof (backs) mounted points. Recentl., this technique has gained widespread acceptance in underground metal.iferous mines in Western Austral.a. The error propagation of the “wal. stations” technique in rel.tion to cl.ssical.traversing was anal.zed and compared, and an optimal.survey procedure and configuration for this technique was derived.

关键词： mine surveying survey control traversing

Effect of two-step cool.ng process on mechanical.properties of TRip steel.with high performance

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Journal.of Iron and Steel.Research International 2018年第4期25卷 426-432页

作者： M.l. l. H. Jiang Y.l. He l.B. Chen G.T. Zhang H. wang X.G. l. l. l. School.of Material. Science and Engineering Shanghai University Shanghai 200072 China State Key l.boratory of Advanced Special.Steel Shanghai University Shanghai 200072 China Pangang Group Research Institute Panzhihua 617000 Sichuan China

A novel.two-step cool.ng experiment was establ.shed to simul.te the sl.w cool.ng process of continuous anneal.ng production l.ne for transformation-induced pl.sticity （TRip） steel. The microstructures and mechanical.properties of TRip steel.soaked at 700℃ for different time were investigated by tensil. test, scanning el.ctron microscopy, X-ray diffraction, and thermodynamic and kinetic cal.ul.tion. It is shown that the steel.soaked for 15 s exhibits the optimal.product of strength and el.ngation （PSE 〉 30,000 MPa%） due to the transformation of austenite to proeutectoid ferrite, which del.ys the bainite transformation and improves the stabil.ty of retained austenite. In addition, the mechanical.properties of TRip steel.soaked over 30 s are much l.wer, resul.ing from the precipitation of cementite, which decreases the stabil.ty of retained austenite and weakens the TRip effect.

关键词： Transformation induced pl.sticity steel Two-step cool.ng Microstructure Mechanical.property