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Articles 1  23 of 23
FullText Articles in Physics
The Elastic Moduli Of Simple TwoDimensional Isotropic Composites: Computer Simulation And Effective Medium Theory, K. A. Snyder, E. J. Garboczi, Anthony Roy Day
The Elastic Moduli Of Simple TwoDimensional Isotropic Composites: Computer Simulation And Effective Medium Theory, K. A. Snyder, E. J. Garboczi, Anthony Roy Day
Anthony Roy Day
An algorithm, combining digitalimage with spring network techniques, has been developed that enables computation of the elastic moduli of random twodimensional multiphase composites. This algorithm is used to study the case of isotropic, randomly centered, overlapping circular inclusions in an isotropic elastic matrix. The results of the algorithm for the fewinclusion limit, as well as the case where both phases have the same shear moduli, agree well with the exact results for these two problems. The case where the two phases have the same Poisson’s ratio, but different Young’s moduli, is also studied, and it is shown that ...
Measurements Of Νw2 And R=Σl/Σt From Inelastic ElectronAluminum Scattering Near X=1, P E. Bosted, A Lung, L Andivahis, L M. Stuart, J Alster, R G. Arnold, C C. Chang, F S. Dietrich, W Dodge, R Gearhart, J Gomez, K A. Griffioen, R S. Hicks, C E. HydeWright, C Keppel, S E. Kuhn, J Lichtenstadt, R A. Miskimen, Gerald Alvin Peterson
Measurements Of Νw2 And R=Σl/Σt From Inelastic ElectronAluminum Scattering Near X=1, P E. Bosted, A Lung, L Andivahis, L M. Stuart, J Alster, R G. Arnold, C C. Chang, F S. Dietrich, W Dodge, R Gearhart, J Gomez, K A. Griffioen, R S. Hicks, C E. HydeWright, C Keppel, S E. Kuhn, J Lichtenstadt, R A. Miskimen, Gerald Alvin Peterson
Gerald Alvin Peterson
Cross sections for inclusive electron scattering from aluminum have been measured at both forward and backward angles in the kinematic region near x =1 and 1.75 & Q & 7 (GeV/c) . The forwardangle data are in good agreement with a recent calculation. Both the data and the calculation show scaling behavior for F2(g, Q~)=vs(g, Q2) at high Q for fixed values of the Nachtmann variable g. The ratio R =oL /trr has been extracted for 1.75 &Q &5 (GeV/c) and is found to decrease with Q2 to a value consistent with zero at the highest ...
Mass Of The Lightest Higgs Boson In The Minimal Supersymmetric Standard Model With An Additional Singlet, Tonnis Ter Veldhuis
Mass Of The Lightest Higgs Boson In The Minimal Supersymmetric Standard Model With An Additional Singlet, Tonnis Ter Veldhuis
Tonnis ter Veldhuis
No abstract provided.
WorkFunction Anisotropies As An Origin Of LongRange Surface Forces, Nancy Burnham, R Colton, H Pollock
WorkFunction Anisotropies As An Origin Of LongRange Surface Forces, Nancy Burnham, R Colton, H Pollock
Nancy A. Burnham
Unusual effects noticed in previous force microscopy data are explained by a model based on workfunction anisotropies and their associated patch charges. Measurable forces between macroscopic bodies can be due to the interaction of patch charges, with important consequences in the fields of surface forces, contact mechanics, adhesion, Schottky barriers, and the surface properties of insulators.
The Elastic Moduli Of A Sheet Containing Circular Holes, Anthony Day, K. Snyder, E. Garboczi, M. Thorpe
The Elastic Moduli Of A Sheet Containing Circular Holes, Anthony Day, K. Snyder, E. Garboczi, M. Thorpe
Anthony Roy Day
We apply computer simulation techniques to obtain the clastic moduli of a matrix containing circular holes. As the area fraction of holes increases, the Young's modulus of the composite decreases from E0 until it eventually vanishes at the percolation threshold. We study three distinct geometries: (a) periodically centered circular holes on a honeycomb lattice, (b) periodically centered circular holes on a triangular lattice, and (c) randomly centered circular holes. All three cases have the same dilute limit that can be calculated exactly. By examining the narrow necks between adjacent circles, we have calculated the critical behavior for the regular ...
Measurement Of The Electric And Magnetic Form Factors Of The Proton From Q2 1.75 To 8.83 (Gev/C)2, P E. Bosted, L Clogher, A Lung, R G. Arnold, R S. Hicks, R A. Miskimen, Gerald Alvin Peterson
Measurement Of The Electric And Magnetic Form Factors Of The Proton From Q2 1.75 To 8.83 (Gev/C)2, P E. Bosted, L Clogher, A Lung, R G. Arnold, R S. Hicks, R A. Miskimen, Gerald Alvin Peterson
Gerald Alvin Peterson
The proton elastic electric and magnetic form factors, GEM and G’bfP(Q2), have been separately measured in the range Q” =1.75 to 8.83 (GeV/c)2, more than doubling the Q3 range of previous data. Scaled by the dipole fit, Go(Q2), the results for Gnlp(Q2)//+G~(Q2) d ecrease smoothly from 1.05 to 0.91, while G~p(Q~)lcdQ~) is consistent with unity. Comparisons are made to QCD Sum LeRule, diquark, constituent quark, and VMD models, none of whic,h agree with all of the new data. The ratio Q2F2/Fl approaches a ...
Bend ElasticModulus Of A Bent And Straight Dimeric LiquidCrystal, Gregory A. Dilisi
Bend ElasticModulus Of A Bent And Straight Dimeric LiquidCrystal, Gregory A. Dilisi
Gregory A. DiLisi
QuarkAntiquark Condensates In Strong Magnetic Fields, Alec Schramm, Berndt Muller, Stefan Schramm
QuarkAntiquark Condensates In Strong Magnetic Fields, Alec Schramm, Berndt Muller, Stefan Schramm
Alec J Schramm
We discuss the effect of large external magnetic fields on the QCD vacuum structure. We show that the deformed vacuum leads to substantial changes in the hadronic spectrum.
Viscoelastic Properties Of A LiquidCrystalline Monomer And Its Dimer, Gregory A. Dilisi, Charles Rosenblatt, Anselm C. Griffin, Uma Hari
Viscoelastic Properties Of A LiquidCrystalline Monomer And Its Dimer, Gregory A. Dilisi, Charles Rosenblatt, Anselm C. Griffin, Uma Hari
Gregory A. DiLisi
W Boson Condensation In PP Collisions?, Alec Schramm, Stefan Schramm, Berndt Muller
W Boson Condensation In PP Collisions?, Alec Schramm, Stefan Schramm, Berndt Muller
Alec J Schramm
We address the question of whether W+/ boson condensation can occur in highenergy collisions.
Light Quark Masses Beyond Leading Order, John Donoghue, Daniel Wyler
Light Quark Masses Beyond Leading Order, John Donoghue, Daniel Wyler
John Donoghue
Chiral Invariance And Electroweak Interactions Of Pions And Kaons, Br Holstein
Chiral Invariance And Electroweak Interactions Of Pions And Kaons, Br Holstein
Barry R Holstein
Electroweak interactions of pions and kaons are studied in the context of chiral perturbation theory. We demonstrate that the effective Lagrangian framework allows a consistent and predictive picture of such processes as well as a succinct way in which to represent the many previous studies of these reactions which have been performed using chiral models.
Displacement, Velocity, And Frames Of Reference: Phenomenographic Studies Of Students’ Understanding And Some Implications For Teaching And Assessment, John Bowden, Gloria Dall'alba, Elaine Martin, D Laurillard, Ference Marton, Geoff Masters, Paul Ramsden, Andrew Stephanou, E Walsh
Displacement, Velocity, And Frames Of Reference: Phenomenographic Studies Of Students’ Understanding And Some Implications For Teaching And Assessment, John Bowden, Gloria Dall'alba, Elaine Martin, D Laurillard, Ference Marton, Geoff Masters, Paul Ramsden, Andrew Stephanou, E Walsh
Prof Geoff Masters AO
Student understanding of fundamental concepts in kinematics has been explored using the phenomenographic research method. University and high schoolphysics students were interviewed and their understandings of displacement, velocity, and frames of reference have been analyzed in particular problem contexts. Descriptions of the different ways students understand the concepts have been developed and relations between the different levels of understanding have been identified. The data highlight the contextual nature of learning and the need for teachers to focus on the nature of student understanding in specific contexts using questions that require qualitative explanation by students. In particular, it is demonstrated that ...
Anchoring Strength Coefficient Of A Monomer And Its Dimer At A PolymerCoated Interface, Gregory A. Dilisi, Charles Rosenblatt, Robert B. Akins, Anselm Griffin, Uma Hari
Anchoring Strength Coefficient Of A Monomer And Its Dimer At A PolymerCoated Interface, Gregory A. Dilisi, Charles Rosenblatt, Robert B. Akins, Anselm Griffin, Uma Hari
Gregory A. DiLisi
Chiral Symmetry Tests In Nonleptonic K Decay, J. Kambor, John Donoghue, Barry Holstein, J. Missimer, D. Wyler
Chiral Symmetry Tests In Nonleptonic K Decay, J. Kambor, John Donoghue, Barry Holstein, J. Missimer, D. Wyler
John Donoghue
Components Of A Chiral Coefficient, John Donoghue, Barry Holstein
Components Of A Chiral Coefficient, John Donoghue, Barry Holstein
John Donoghue
Mass Ratios Of Light Quarks, John Donoghue, Barry Holstein, Daniel Wyler
Mass Ratios Of Light Quarks, John Donoghue, Barry Holstein, Daniel Wyler
John Donoghue
Two Component Semileptonic Form Factors, Gustavo Burdman, John Donoghue
Two Component Semileptonic Form Factors, Gustavo Burdman, John Donoghue
John Donoghue
Optical Transformations In ThreeSpace: Simulations With A Pc, Raymond G. Wilson, Sean M. Mccreary, Jeffrey L. Thompson
Optical Transformations In ThreeSpace: Simulations With A Pc, Raymond G. Wilson, Sean M. Mccreary, Jeffrey L. Thompson
Raymond Wilson
Nuclear Emp Hardening Approach As The Basis For Unified Electromagnetic Environmental Effects Protection, George H. Baker Iii
Nuclear Emp Hardening Approach As The Basis For Unified Electromagnetic Environmental Effects Protection, George H. Baker Iii
George H Baker
Operation DESERT STORM demonstrated the clear military advantage that was provided by our sophisticated electronic C4I and weapons systems. High tech means so dominate the battlefield that the outcome of future conflicts could be decided by electronics attrition rather than human casualties. However, the electromagnetic threat landscape is highly complex. The already formidable list of environments (EMI, lighting, ESD, EMP, HERO, TEMPEST, EW, etc.) is lengthened by emerging threats from high power microwave (HPM) and ultrawide band (UWB) electromagnetic weapons. Many of these environments overlap in the frequency and amplitude of the electrical stresses they create.
The large number of ...
SlidingMode Observers Based On Equivalent Control Method, Sergey V. Drakunov
SlidingMode Observers Based On Equivalent Control Method, Sergey V. Drakunov
Sergey V. Drakunov
No abstract provided.
MultiBall Collisions, Terry L. Smith, Jay S. Huebner
MultiBall Collisions, Terry L. Smith, Jay S. Huebner
Jay S Huebner
Explanation to use the "doubleball" demonstration as a model for the supernova core bounce.
Union Of Chiral And Heavy Quark Symmetries, John Donoghue
Union Of Chiral And Heavy Quark Symmetries, John Donoghue
John Donoghue