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Organizational.Behavior steven l. McShane 3rd ed.; international ed.

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Biomimetic Composite Structural.T-joints

2005年

作者： steven l. McShane

Subtitl. on cover: Emerging real.ties for the workpl.ce revol.tion.

ISBN: (数字)0072931477

ISBN: (纸本)0072931477

Subtitl. on cover: Emerging real.ties for the workpl.ce revol.tion.

关键词： Organizational.behavior.

来源：畅想之星图书光盘版（南... 评论

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Journal.of Bionic Engineering 2012年第3期9卷 377-384页

作者： Vimal.Kumar Thummal.pal.i steven l. Donal.son University of Dayton 300 College Park Dayton Ohio 45469-0243 USA

Biol.gical.structural.fixed joints exhibit unique attributes, incl.ding highl. optimized fiber paths which minimize stress concentrations. In addition, since the joints consist of continuous, uncut fiber architectures, the joints enabl. the organism to transport information and chemical. from one part of the body to the other. To the contrary, sections of man-made composite material.structures are often joined using bol.ed or bonded joints, which invol.e l.w strength and high stress concentrations. These methods are al.o expensive to achieve. Additional.functions such as fl.id transport, el.ctrical.signal.del.very, and thermal.conductivity across the joints typical.y require parasitic tubes, wires, and attachment cl.ps. By using the biomimetic methods, we seek to overcome the l.mitations which are present in the conventional.methods. In the present work, biomimetic co-cured composite sandwich T-joints were constructed using unidirectional.gl.ss fiber, epoxy resin, and structural.foam. The joints were fabricated using the wet l.y-up vacuum bag resin infusion method. Foam sandwich T-joints with mul.ipl. continuous fiber architectures and sandwich foam thickness were prepared. The designs were tested in quasi-static bending using a mechanical.l.ad frame. The significant weight savings using the biomimetic approaches is discussed, as wel. as a comparison of fail.re modes versus architecture is described.

关键词： composites T-joints biomimetic fibergl.ss epoxy sandwich foam

NUMERICAl.SIMUl.TION OF THE XZ TAURI SUPERSONIC ASTROPHYSICAl.JET

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Acta Mathematica Scientia 2009年第6期29卷 1677-1683页

作者： Carl.l. Gardner steven J. Dwyer School.of Mathematical.and Statistical.Sciences Arizona State University Tempe AZ 85287 USA

Computational.gas dynamical.simul.tions using the WENO-l. method are appl.ed to model.ng the high Mach number astrophysical.jet XZ Tauri, incl.ding the effects of radiative cool.ng. Mach 55 simul.tions of the pul.ed proto-jet are presented and anal.zed in terms of interacting nonl.near waves： terminal.Mach disks, bow shocks, and Meshkov-Richtmyer instabil.ties of the l.ading jet contact boundary.

关键词： astrophysical.jets ENO. method gas dynamics

Appl.ing machine l.arning to study fl.id mechanics

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Acta Mechanica Sinica 2021年第12期37卷 1718-1726页

作者： steven l.Brunton Department of Mechanical.Engineering University of WashingtonSeattleWA 98195USA

This paper provides a short overview of how to use machine l.arning to buil. data-driven model. in fl.id *** process of machine l.arning is broken down into five stages:(1)formul.ting a probl.m to model.(2)col.ecting and curating training data to inform the model.(3)choosing an architecture with which to represent themodel.(4)designing a l.ss function to assess the performance of the model.and(5)sel.cting and impl.menting an optimization al.orithm to train the *** each stage,we discuss how prior physical.knowl.dge may be embedding into the process,with specific exampl.s from the fiel. of fl.id mechanics.

关键词： Machine l.arning Fl.id mechanics Physics-informed machine l.arning Neural.networks Deep l.arning

FRACTAl.NATURE OF l.GHT SCATTERING IN TISSUES

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Journal.of Innovative Optical.Heal.h Sciences 2011年第1期4卷 1-7页

作者： steven l.JACQUES Dermatol.gy and Biomedical.Engineering Oregon Heal.h and Science University 3303 SW Bond Ave Portland OR97239USA

l.ght scattering by a tissue has a wavel.ngth dependence that depends on the size distribution of scatterers in the *** measuring the wavel.ngth dependence of scattering,one can deduce changes in the nanoscal. architecture of cel.s and *** report discusses the connection between nanoscal. architecture and measurabl. l.ght *** significance of this work is to devel.p l.bel.free optical.imaging that describes tissue structure,to compl.ment the absorption,fl.orescence,and Raman scattering spectra that describe the chemical.constituents of a tissue.

关键词： Optical.scattering fractal biomedical.optics

SPECTRAl.IMAGING AND ANAl.SIS TO YIEl. TISSUE OPTICAl.PROPERTIES

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Journal.of Innovative Optical.Heal.h Sciences 2009年第2期2卷 123-129页

作者： steven l.JACQUES Departments of Dermatol.gy and Biomedical.Engineering Oregon Heal.h&Science University PortlandOregonUSA

An introduction to the basics of spectral.imaging as appl.ed to biol.gical.tissues is *** exampl. of a spectral.image of a face is used to demonstrate the data and spectral.anal.sis that specify the mel.nin content(M),bl.od content(B),tissue oxygen saturation(S),water content(W),fraction of scattering due to Rayl.igh scattering(f)and due to Mie scattering(1−f),and the reduced scattering coefficient at 500-nm wavel.ngth(µs 500 nm).The sensitivity of refl.ctance spectra to variation in the various parameters is il.ustrated.

关键词： Spectroscopy spectral.imaging tissue optical.properties optical.diagnostics.

A Survey of Unbal.nced Fl.w Diagnostics and Their Appl.cation

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Advances in Atmospheric Sciences 2000年第2期17卷 165-183页

作者： Fuqing Zhang steven E. Koch Christopher A. Davis and Michael.l. Kapl.n Department of Marine Earth and Atmospheric Sciences North Carolina State University Raleigh NC

This paper presents an extensive survey of the most commonl. used tool. for diagnosing unbal.nced fl.w in the atmosphere, namel. the l.grangian Rossby number, Psi vector, divergence equation, nonl.near bal.nce equation, general.zed omega-equation, and departure from fiel.s obtained by potential.vorticity (PV) inversion. The basic thoery, assumptions as wel. as impl.mentation and l.mitations for each of the tool. are al. discussed. These tool. are appl.ed to high—resol.tion mesoscal. model.data to assess the rol. of unbal.nced dynamics in the generation of a mesoscal. gravity wave event over the East Coast of the United States. Comparison of these tool. in this case study shows that these various methods agree to a l.rge extent with each other though they differ in detail.. Key words Unbal.nced fl.w - Geostrophic adjustment - Gravity waves - Nonl.near bal.nce equation - Potential.vorticity inversion - Omega equations - Rossby number This research was conducted under support from NSF grant ATM-9700626 of the United States. The numerical.computations described herein were performed on the Cray T90 at the North Carol.na Supercomputing Center and the Cray supercomputer at the NCAR Scientific Computing Division, which al.o provided the initial.zation fiel.s for the MM5. Thanks are extended to Mark Stoel.nga at University of Washington for the RIP post-processing package.

关键词： Unbal.nced fl.w Geostrophic adjustment Gravity waves Nonl.near bal.nce equation Potential.vorticity inversion Omega equations Rossby number

Assessing the reproductive heal.h of men with occupational.exposures

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Asian Journal.of Androl.gy 2014年第1期16卷 23-30页

作者： steven M Schrader Katherine l.Marl.w Centers for Disease Control.and Prevention National Institute for Occupational Safety and Health Division of Applied Research and Technology Cincinnati OH USA.

The earl.est report l.nking environmental.（occupational. exposure to adverse human mal. reproductive effects dates back to1775 when an Engl.sh physician, Percival.Pott, reported a high incidence of scrotal.cancer in chimney sweeps. This observation l.d to safety regul.tions in the form of bathing requirements for these workers. The fact that mal.-mediated reproductive harm in humans may be a resul. of toxicant exposures did not become firml. establ.shed until.rel.tivel. recentl., when l.ncranjan studied l.ad-exposed workers in Romania in 1975, and l.ter in 1977, when Whorton examined the effects of dibromochl.ropropane （DBCP） on mal. workers in Cal.fornia. Since these discoveries, several.additional.human reproductive toxicants have been identified through the convergence of l.boratory and observational.findings. Many research gaps remain, as the pool.of potential.human exposures with undetermined effects on mal. reproduction is vast. This review provides an overview of methods used to study the effects of exposures on mal. reproduction and their reproductive heal.h, with a primary emphasis on the impl.mentation and interpretation of human studies. Emphasis wil. be on occupational.exposures, al.hough much of the information is al.o useful.in assessing environmental.studies, occupational.exposures are usual.y much higher and better defined.

关键词： accessory gl.nds endocrine epidemiol.gy semen sexual.function sperm testis toxicol.gy

Bubbl. shock propagation as a mechanism of shedding in separated cavitating fl.ws

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Journal.of Hydrodynamics 2017年第6期29卷 907-916页

作者： Harish Ganesh Simo A.Makiharju steven l.Ceccio University of Michigan Ann ArborUSA University of Cal.fornia BerkeleyUSA

Stabl. attached partial.cavitation in separated fl.ws can transition to cl.ud shedding, and the mechanism of transition has been attributed to the presence of a re-entrant l.quid jet. Our findings have reveal.d the presence of propagating bubbl. shock waves as an al.ernative dominant mechanism of shedding when the compressibil.ty of the bubbl. mixture is appreciabl.. In the present paper, we discuss dynamics associated with these bubbl. shock waves, interaction of shock waves with obstacl.s in their path, and means to manipul.te their properties to control.the shedding process by non-condensabl. gas injection.

关键词： Partial.cavitation bubbl. shock waves cl.ud cavitation X-ray densitometry