检索结果-南通市图书馆

A p.larizing situation： Taking an in-p.ane p.rsp.ctive for next-generation near-field studies

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of p.ysics 2016年第2期11卷 1-17页

作者： p. j.mes Schuck Wel Bao Nicholas j. Borys Molecular Foundry Lawrence Berkeley National Laboratory Berkeley CA 94720 USA Dep.rtment of Materials Science and Engineering University of California Berkeley CA 94720-1760 USA

By enabling the p.obing of light-matter interactions at the functionally relevant length scales of most materials, near-field op.ical imaging and sp.ctroscop. accesses information that is unobtainable with other methods. The advent of ap.rtureless techniques, which exp.oit the ultralocalized and enhanced near-fields created by sharp.metallic tip. or p.asmonic nanop.rticles, has resulted in rap.d adop.ion of near-field ap.roaches for studying novel materials and p.enomena, with sp.tial resolution ap.roaching sub-molecular levels. However, these ap.roaches are generally limited by the dominant out-of-p.ane p.larization resp.nse of ap.rtureless tip., restricting the exp.oration and discovery of many material p.op.rties. This has led to recent design and fabrication breakthroughs in near-field tip. engineered sp.cifically for enhancing in-p.ane interactions with near-field light comp.nents. This mini-review p.ovides a p.rsp.ctive on recent p.ogress and emerging directions aimed at utilizing and controlling in-p.ane op.ical p.larization, highlighting key ap.lication sp.ces where in-p.ane near-field tip.resp.nses have enabled recent advancements in the understanding and develop.ent of new nanostructured materials and devices.

关键词： near-field op.ical microscop. nano-op.ics TERS p.asmonics op.ical antenna 2D materials

An exp.anation of the △_(D35)（1930） as a ρ△ bound state

在线全文

学校读者我要写书评

暂无评论

Chinese p.ysics C 2009年第12期33卷 1267-1272页

作者： p. Gonzlez E. Oset j. Vij.nde Dep.rtamento de Física Teórica Universidad de Valencia (UV) e IFIC (UV - CSIC) Spain Dep.rtamento de Física Atómica Molecular y Nuclear Universidad de Valencia (UV) e IFIC (UV - CSIC) Spain

Constituent quark models based on two-body p.tentials systematically overp.edict the mass of △D35(1930). A p.ssible solution to this p.oblem comes out from the ap.lication of a schematic hybrid model, containing three-quark as well as meson-baryon comp.nents, to the light-quark baryon sp.ctrum. The △D35(1930) and its p.rtners △D33(1940) and △S31(1900) are found to contain a significant ρ△ comp.nent. Then, through the use of the hidden gauge formalism, it is shown that these resonances can be dynamically generated from the ρ-△ interaction. In p.rticular △D35(1930) can be interp.eted as being essentially a ρ△bound state. This interp.etation suggests that the inclusion of ρ△as an effective inelastic channel in data analyses could imp.ove the extraction and identification of the resonance.

关键词： p.rticle p.ysics and field theory

On a general theory for comp.essing p.ocess and aeroacoustics:linear analysis

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2010年第3期26卷 355-364页

作者： E .Mao Y. p. Shi j. Z. Wu State Key Laboratory for Turbulence and Comp.ex Systems College of Engineering Peking University 100871 Beijing China University of Tennessee Sp.ce Institute Tullahoma TN 37388 USA

Of the three mutually coup.ed fundamental p.ocesses （shearing, comp.essing, and thermal） in a general fluid motion, only the general formulation for the comp.ess- ing p.ocess and a subp.ocess of it, the subj.ct of aeroacous- tics, as well as their p.ysical coup.ing with shearing and thermal p.ocesses, have so far not reached a consensus. This situation has caused difficulties for various in-dep.h comp.ex multip.ocess flow diagnosis, op.imal configuration design, and flow/noise control. As the first step.toward the desired formulation in fully nonlinear regime, this p.p.r emp.oys the op.rator factorization method to revisit the analytic linear theories of the fundamental p.ocesses and their decomp.si- tion, esp.cially the further sp.itting of comp.essing p.ocess into acoustic and entrop. modes, develop.d in 1940s-1980s. The flow treated here is small disturbances of a comp.essible, viscous, and heat-conducting p.lytrop.c gas in an unbounded domain with arbitrary source of mass, external body force, and heat addition. p.evious results are thereby revised and extended to a comp.ete and unified theory. The theory p.o- vides a necessary basis and valuable guidance for develop.ng corresp.nding nonlinear theory by clarifying certain basic issues, such as the p.op.r choice of characteristic variables of comp.essing p.ocess and the feature of their governing equations.

关键词： Longitudinal (comp.essing) p.ocessTransversal (shearing) p.ocess Acoustic mode Entrop. mode Aeroacoustics

A SURVEY OF STACKELBERG DIFFERENTIAL GAME MODELS IN SUp.LY AND MARKETING CHANNELS

在线全文

学校读者我要写书评

暂无评论

j.urnal of Systems Science and Systems Engineering 2007年第4期16卷 385-413页

作者： Xiuli HE Ashutosh p.ASAD Suresh p. SETHI Genaro j. GUTIERREZ School of Management The University of Texas at Dallas Richardson TX 75080 McCombs School of Business The University of Texas at Austin Austin TX 78731

Stackelberg differential game models have been used to study sequential decision making in noncoop.rative games in diverse fields. In this p.p.r, we survey recent ap.lications of Stackelberg differential game models to the sup.ly chain management and marketing channels literatures. A common feature of these ap.lications is the sp.cification of the game structure： a decentralized channel comp.sed of a manufacturer and indep.ndent retailers, and a sequential decision p.ocedure with demand and sup.ly dynamics and coordination issues. In sup.ly chain management, Stackelberg differential games have been used to investigate inventory issues, wholesale and retail p.icing strategies, and outsourcing in dynamic environments. The underlying demand typ.cally has growth dynamics or seasonal variation. In marketing, Stackelberg differential games have been used to model coop.rative advertising p.ograms, store brand and national brand advertising strategies, shelf sp.ce allocation, and p.icing and advertising decisions. The demand dynamics are usually extensions of the classical advertising cap.tal models or sales-advertising resp.nse models. We begin by exp.aining the Stackelberg differential game solution methodology and then p.ovide a descrip.ion of the models and results rep.rted in the literature.

关键词： Stackelberg differential games sup.ly chain management marketing channels op.n-loop.equilibria feedback p.licies channel coordination op.imal control

Cellular modelling using p.systems and p.ocess algebra

在线全文

学校读者我要写书评

暂无评论

p.ogress in Natural Science:Materials International 2007年第4期17卷 375-383页

作者： Francisco j. Romero-Camp.ro Marian Gheorghe Gabriel Ciobanu j.hn M. Auld Mario j. p.rez-j.ménez Research Group.on Natural Comp.ting Department of Computer Science and Artificial IntelligenceUniversity of SevilleAvda.Reina Mercedes41012 SevillaSpain Dep.rtment of Comp.ter Science The University of Sheffield Regent CourtPortobello StreetSheffield S1 4DPUK Romanian Academy Institute of Computer ScienceBlvd. Carol I nr. 11700505IasiRomania

In this p.p.r various molecular chemical interactions are modelled under different comp.tational p.radigms. p.systems andπ-calculus are used to describe intra-cellular reactions like p.otein-p.otein interactions and ... 详细信息

关键词： cellular modelling p.systems p.ocess algebra.

Coastal morp.ological modeling to assess the dynamics of Arklow Bank, Ireland

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International j.urnal of Sediment Research 2009年第3期24卷 299-314页

作者： j. K. p.NIGRAHI p. N. ANANTH p. A. UMESH Senior Engineering Consultant L & T-RAMBOLL Consulting Engineers Limited Senior p.oj.ct Consultant L & T-RAMBOLL Engineering Consultant L & T-RAMBOLL

A numerical modeling and simulation exp.riment is carried out to assess the sediment dynamics of Arklow Bank, Ireland. To meet a requirement for favorable site selection to establish windmills on the bank, the long-term morp.ological changes of the coast are studied using the CAMS (Coastal Area Morp.ological Shell) model of the Mike-21 suite of p.ograms. The morp.ological modeling of the bank was accomp.ished by p.rsuing a p.obabilistic ap.roach for the observed tide and wave characteristics that contribute significantly to the sediment transp.rt p.ocesses over the bank. A series of simulations are p.rformed using Mike-21 NSW (Nearshore Sp.ctral Wind-Wave), HD (Hydrodynamic), and ST (Sand Transp.rt) models to establish the coastal hydraulics p.rameters. The results of the morp.ological modeling showed that generally the bank is dynamically stable with most areas of the bank having average bed level changes on the order of ±8 cm/day.

关键词： Morp.odynamics Sediment transp.rt CAMS Bed-level change Sand banks

Travellers:Design Collaboration and Digital Media

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 2008年第S1期13卷 234-240页

作者： j. Bahoric p. Nicholas G. Ormston Arup.p.y Ltd Sp.tial Information Architecture Laboratory RMIT University Melbourne 3000 Australia City of Melbourne

This p.p.r examines the use of 3D electronic medium as a tool for p.ocuring detailed design information for the Sandridge Bridge Travellers p.oj.ct. The Sandridge Bridge Travellers p.oj.ct required the p.oduction of 10 7.5 m of tall × 5 ― 12 m of wide figures under very tight p.ogramme and budget constraints. This was achieved through a synthesis of art and engineering, whereby structure and sculp.ure become one and the same. Traditional p.ocurement routes would have entailed the p.oduction and interp.etation of drawings and design details at all discip.ine interfaces before fabrication; an ap.roach that was unfeasible given the constraints. Instead, The Travellers p.oj.ct saw a single electronic file p.ss backwards and forwards from client to architect, engineer, and fabricator, with information from the initial artistic concep. work p.ases through to analysis, design, member scheduling and fabrication all integrated and facilitated by a single electronic medium. Key to the delivery was the use of 3D modeling and scrip.ing p.ograms that enabled the efficient use and develop.ent of design information through all stages of the design p.ocess. This enabled total integration of all trades requiring a collaborative ap.roach where each p.rty maintained j.int ownership.of the 3D design information from incep.ion to concep.ion.

关键词： Sandridge Bridge Travellers sculp.ure 3-D modeling collaborative ap.roach 3-D electronic medium AutoCAD R2004TM RhinoTM formats sp.ine rationalization

Influence of wall slip.on the hydrodynamic behavior of a two-dimensional slider bearing

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2007年第6期23卷 655-661页

作者： G. j. Ma C. W. Wu p. Zhou State Key Laboratory of Structural Analysis for Industrial Equip.ent Department of Engineering Mechanics Dalian University of Technology Dalian 116024 China

In the p.esent p.p.r, a multi-linearity method is used to address the nonlinear slip.control equation for the hydrodynamic analysis of a two-dimensional （2-D） slip.gap.flow. Numerical analysis of a finite length slider bearing with wall slip.shows that the surface limiting shear stress exerts comp.icated influences on the hydrodynamic behavior of the gap.flow. If the slip.occurs at either the stationary surface or the moving surface （esp.cially at the stationary surface）, there is a transition p.int in the initial limiting shear stress for the p.op.rtional coefficient to affect the hydrodynamic load sup.ort in two op.osite ways： it increases the hydrodynamic load sup.ort at higher initial limiting shear stresses, but decreases the hydrodynamic load sup.ort at lower initial limiting shear stresses. If the slip.occurs at the moving surface only, no fluid p.essure is generated in the case of null initial limiting shear stress. If the slip.occurs at both the surfaces with the same slip.p.op.rty, the hydrodynamic load sup.ort goes off after a critical sliding sp.ed is reached. A small initial limiting shear stress and a small p.op.rtionality coefficient always give rise to a low friction drag.

关键词： Wall slip Slider beating Multi-linearity method Quadratic p.ogramming

The effects of selection for cold tolerance on cross-tolerance to other environmental stressors in Drosop.ila melanogaster

在线全文

学校读者我要写书评

暂无评论

Insect Science 2009年第3期16卷 263-276页

作者： Heath A. MacMillan j.llian p. Walsh Brent j. Sinclair Dep.rtment of Biology The University of Western Ontario London ON N6A 5B7 Canada

Cross tolerance, whereby tolerance to one environmental stress is correlated with tolerance to other stressors, is thought to be widesp.ead in insects. We used lines of Drosop.ila melanogaster Meigen （Dip.era： Drosop.ilidae） selected for survival at a 1-h exp.sure to -5℃ to examine the extent to which this selection results in increased tolerance to other stresses, including high and low temp.ratures, desiccation and starvation. While selection imp.oved tolerance to acute cold exp.sure and survival at -5℃, there was little effect of selection regime on tolerance to other stressors. There was no correlation between tolerances to any of the stressors, suggesting different mechanisms of tolerance. This sup.orts arguments that correlations between stress tolerances during selection exp.riments with D. melanogaster may be coincidental. The magnitude of heat-hardening was ap.arently constrained by basal tolerance among lines, but the magnitude of the rap.d cold-hardening resp.nse was not correlated with basal cold tolerance, imp.ying that the relationship.between inducible and basal tolerances differs at high and low temp.ratures.

关键词： chill coma cold tolerance cross-tolerance desiccation heat shock high temp.rature laboratory selection longevity rap.d cold hardening starvation