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Articles 31  52 of 52
FullText Articles in Physics
Measurement Of CpViolating Asymmetries In The B^{0} > K+K−K^{0} Dalitz Plot, Stefan Spanier
Measurement Of CpViolating Asymmetries In The B0 > K+K−K0 Dalitz Plot, Stefan Spanier
stefan spanier
No abstract provided.
Polyaniline On Crystalline Silicon Heterojunction Solar Cells, Weining Wang, E. A. Schiff
Polyaniline On Crystalline Silicon Heterojunction Solar Cells, Weining Wang, E. A. Schiff
Weining Wang, Ph.D.
No abstract provided.
SelfHeating In Compost Piles Due To Biological Effects, Tim Marchant
SelfHeating In Compost Piles Due To Biological Effects, Tim Marchant
Tim Marchant
The increase in temperature in compost piles/landfill sites due to microorganisms undergoing exothermic reactions is modelled. A simplified model is considered in which only biological selfheating is present. The heat release rate due to biological activity is modelled by a function which is a monotonic increasing function of temperature over the range 0⩽T⩽a, whilst for T⩾a it is a monotone decreasing function of temperature. This functional dependence represents the fact that microorganisms die or become dormant at high temperatures. The bifurcation behaviour is investigated for 1d slab and 2d rectangular slab geometries. In both cases there ...
Solitary Wave Interaction For A HigherOrder Nonlinear Schrodinger Equation, Tim Marchant
Solitary Wave Interaction For A HigherOrder Nonlinear Schrodinger Equation, Tim Marchant
Tim Marchant
Solitary wave interaction for a higherorder version of the nonlinear Schrödinger (NLS) equation is examined. An asymptotic transformation is used to transform a higherorder NLS equation to a higherorder member of the NLS integrable hierarchy, if an algebraic relationship between the higherorder coefficients is satisfied. The transformation is used to derive the higherorder one and twosoliton solutions; in general, the Nsoliton solution can be derived. It is shown that the higherorder collision is asymptotically elastic and analytical expressions are found for the higherorder phase and coordinate shifts. Numerical simulations of the interaction of two higherorder solitary waves are also performed ...
Dust And Atomic Gas In Dwarf Irregular Galaxies Of The M81 Group: The Sings And Things View, F. Walter, John Cannon, H. Roussel, G. Bendo, D. Calzetti, D. Dale, B. Draine, G. Helou, R. Kennicutt, G. Rieke, L. Armus, C. Engelbracht, K. Gordon, D. Hollenbach, J. Lee, A. Li, M. Meyer, J. Moustakas, E. Murphy, M. Regan, JD. Smith, E. Brinks, W.J. Deblok, F. Bigiel, M. Thornley
Dust And Atomic Gas In Dwarf Irregular Galaxies Of The M81 Group: The Sings And Things View, F. Walter, John Cannon, H. Roussel, G. Bendo, D. Calzetti, D. Dale, B. Draine, G. Helou, R. Kennicutt, G. Rieke, L. Armus, C. Engelbracht, K. Gordon, D. Hollenbach, J. Lee, A. Li, M. Meyer, J. Moustakas, E. Murphy, M. Regan, JD. Smith, E. Brinks, W.J. Deblok, F. Bigiel, M. Thornley
John Cannon
No abstract provided.
Domain Walls, The Extended Superconformal Algebra, And The Supercurrent, T Clark, M Nitta, Tonnis Ter Veldhuis
Domain Walls, The Extended Superconformal Algebra, And The Supercurrent, T Clark, M Nitta, Tonnis Ter Veldhuis
Tonnis ter Veldhuis
No abstract provided.
Optical Enhancement In Semitransparent Polymer Photovoltaic Cells, Gm Ng, El Kietzke, T Kietzke, Lw Tan, Pk Liew, F.R. Zhu
Optical Enhancement In Semitransparent Polymer Photovoltaic Cells, Gm Ng, El Kietzke, T Kietzke, Lw Tan, Pk Liew, F.R. Zhu
Professor ZHU, Fu Rong
No abstract provided.
Asymptotic Solitons On A NonZero Mean Level., Tim Marchant
Asymptotic Solitons On A NonZero Mean Level., Tim Marchant
Tim Marchant
The collision of solitary waves for a higherorder modified Kortewegde Vries (mKdV) equation is examined. In particular, the collision between solitary waves with sechtype and algebraic (which only exist on a nonzero mean level) profiles is considered. An asymptotic transformation, valid if the higherorder coefficients satisfy a certain algebraic relationship, is used to transform the higherorder mKdV equation to an integrable member of the mKdV hierarchy. The transformation is used to show that the higherorder collision is asymptotically elastic and to derive the higherorder phase shifts. Numerical simulations of both elastic and inelastic collisions are performed. For the example covered ...
Commercial Water Auditing In Stella, Stephen Mecca, S. Mecca
Commercial Water Auditing In Stella, Stephen Mecca, S. Mecca
Stephen J. Mecca
Stella has been successfully used to model water supply systems [1] including the representation of residential demand [2] in such systems (Stella is a product of ISEE Systems, Hanover, NH USA.) This paper documents the use of this modeling tool in simulating demand from several appliances common to commercial water users and applying this technique to commercial water auditing. The application of the model to the audits of six commercial organizations is presented. The model is being used for water management/conservation studies but also has potential for representing commercial water demand in more comprehensive supply system models.
Numerical Simulation Of Contaminant Flow In A Wool Scour Bowl., Tim Marchant
Numerical Simulation Of Contaminant Flow In A Wool Scour Bowl., Tim Marchant
Tim Marchant
Wool scouring is the process of washing dirty wool after shearing. Our model numerically simulates contaminant movement in a wool scour bowl using the advection–dispersion equation. This is the first wool scour model to give timedependent results and to model the transport of contaminants within a single scour bowl. Our aim is to gain a better understanding of the operating parameters that will produce efficient scouring. Investigating the effects of varying the parameters reveals simple, interesting relationships that give insight into the dynamics of a scour bowl.
Angular Dependent Magnetorestriction Study Of Cecoin5, Catalin Martin, Victor Correa, Kenneth Purcell, Timothy Timothy, Eric Palm, Stanley Tozer, George Schmiedeshoff, J Cooley
Angular Dependent Magnetorestriction Study Of Cecoin5, Catalin Martin, Victor Correa, Kenneth Purcell, Timothy Timothy, Eric Palm, Stanley Tozer, George Schmiedeshoff, J Cooley
George Schmiedeshoff
Using a capacitive dilatometer designed to operate on the rotating stage of a top loading dilution refrigerator probe, we measured the magnetorestriction ( L(H)L(0))/L(0), of the Heavy Fermion Superconductor CeCoIn5, along all three crystallographic direction, and with the magnetic field applied parallel both to the superconducting abplanes and to the caxis. When Bab, the caxis magnetorestriction features, besides a sharp jump at the upper critical field, a continuous, secondorder like, transition at a lower field, which is consistent with previous observations from specific heat measurements. Our results are consistent with a field induced modulation of ...
An UltravioletToRadio Broadband Spetral Atlas Of Nearby Galaxies, D. A. Dale, A. Gil De Paz, K. D. Gordon, H. M. Hanson, L. Armus, G. J. Bendo, L. Bianchi, M. Block, S. Boisser, A. Boselli, B. A. Buckalew, V. Buat, D. Burgarella, D. Calzetti, John M. Cannon, C. W. Engelbracht, G. Helou, D. J. Hollenbach, T. H. Jarett, R. C. Kennicutt, C. Leitherer, A. Li, B. F. Madore, D. C. Martin, M. J. Meyer, E. J. Murphy, M. W. Regan, H. Roussel, JD. T. Smith, M. L. Sosey, D. A. Tilker, F. Walter
An UltravioletToRadio Broadband Spetral Atlas Of Nearby Galaxies, D. A. Dale, A. Gil De Paz, K. D. Gordon, H. M. Hanson, L. Armus, G. J. Bendo, L. Bianchi, M. Block, S. Boisser, A. Boselli, B. A. Buckalew, V. Buat, D. Burgarella, D. Calzetti, John M. Cannon, C. W. Engelbracht, G. Helou, D. J. Hollenbach, T. H. Jarett, R. C. Kennicutt, C. Leitherer, A. Li, B. F. Madore, D. C. Martin, M. J. Meyer, E. J. Murphy, M. W. Regan, H. Roussel, JD. T. Smith, M. L. Sosey, D. A. Tilker, F. Walter
John Cannon
No abstract provided.
Imaging VoltageDependent Cell Motions With Heterodyne MachZehnder Phase Microscopy, Christopher FangYen, S Oh, Y Park, S Song, H S. Seung, M S. Feld
Imaging VoltageDependent Cell Motions With Heterodyne MachZehnder Phase Microscopy, Christopher FangYen, S Oh, Y Park, S Song, H S. Seung, M S. Feld
Christopher FangYen
No abstract provided.
Tomographic Phase Microscopy, W Choi, Christopher FangYen, K Badizadegan, S Oh, N Lue, R R. Dasari, M S. Feld
Tomographic Phase Microscopy, W Choi, Christopher FangYen, K Badizadegan, S Oh, N Lue, R R. Dasari, M S. Feld
Christopher FangYen
No abstract provided.
Significant Suppression Of Ferromagnetism By Hydrostatic Pressure In The Diluted Magnetic Semiconductor Sb2Xvxte3 With X <~ 0.03, Jeffrey Dyck, T J. Mitchell, A J. Luciana, P C. Quayle, C DrašAr, P LošŤÁK
Significant Suppression Of Ferromagnetism By Hydrostatic Pressure In The Diluted Magnetic Semiconductor Sb2Xvxte3 With X <~ 0.03, Jeffrey Dyck, T J. Mitchell, A J. Luciana, P C. Quayle, C DrašAr, P LošŤÁK
Jeffrey Dyck
The authors report on the hydrostatic pressure dependence of the magnetotransport properties of ferromagnetic Sb2xVxTe3 single crystals with x=0.02—0.03. Pressure significantly increases the free hole concentration in these compounds. In turn, the Curie temperature is suppressed by roughly 40%, which goes against many models that would predict an increase in Curie temperature with increasing carrier concentration. These results indicate that the ferromagnetism in these materials is carrier mediated and that a full RudermanKittelKasuyaYosida model that takes into account the oscillatory nature of the indirect exchange interaction among localized spins is needed in order to explain the ...
The Low Co Content Of The Extremely MetalPoor Galaxy I Zw 18, A. Leroy, John M. Cannon, F. Walter, A. Bolatto, A. Weiss
The Low Co Content Of The Extremely MetalPoor Galaxy I Zw 18, A. Leroy, John M. Cannon, F. Walter, A. Bolatto, A. Weiss
John Cannon
No abstract provided.
Second Born Approximation And Coulomb Scattering, Br Holstein
Second Born Approximation And Coulomb Scattering, Br Holstein
Barry R Holstein
We examine the problem of calculating higher order contributions to the Coulomb scattering amplitude. To make contact with the well known result, it is necessary to modify the conventional definition of the scattering amplitude.
Precision Measurements Of The Nucleon Strange Form Factors At Q2∼0.1 Gev2, Krishna Kumar
Precision Measurements Of The Nucleon Strange Form Factors At Q2∼0.1 Gev2, Krishna Kumar
Krishna Kumar
We report new measurements of the parityviolating asymmetry APV in elastic scattering of 3 GeV electrons off hydrogen and 4He targets with ⟨θlab⟩≈6.0°. The 4He result is APV=(+6.40±0.23(stat)±0.12(syst))×106. The hydrogen result is APV=(1.58±0.12(stat)±0.04(syst))×106. These results significantly improve constraints on the electric and magnetic strange form factors GEs and GMs. We extract GEs=0.002±0.014±0.007 at ⟨Q2⟩=0.077 GeV2, and GEs+0.09GMs=0.007±0.011±0.006 at ⟨Q2⟩=0.109 GeV2, providing new ...
Geometric Theory Of Columnar Phases On Curved Substrates, Christian Santangelo, Vincenzo Vitelli, Randall D. Kamien, David R. Nelson
Geometric Theory Of Columnar Phases On Curved Substrates, Christian Santangelo, Vincenzo Vitelli, Randall D. Kamien, David R. Nelson
Christian Santangelo
We study thin selfassembled columns constrained to lie on a curved, rigid substrate. The curvature presents no local obstruction to equally spaced columns in contrast with curved crystals for which the crystalline bonds are frustrated. Instead, the vanishing compressional strain of the columns implies that their normals lie on geodesics which converge (diverge) in regions of positive (negative) Gaussian curvature, in analogy to the focusing of light rays by a lens. We show that the out of plane bending of the cylinders acts as an effective ordering field.
Modeling Innovation By A Kinetic Description Of The Patent Citation System, Gabor Csardi, Katherine J. Strandburg, Jan Tobochnik, Peter Erdi, Laszlo Zalanyi
Modeling Innovation By A Kinetic Description Of The Patent Citation System, Gabor Csardi, Katherine J. Strandburg, Jan Tobochnik, Peter Erdi, Laszlo Zalanyi
Katherine J. Strandburg
This paper reports results of a network theory approach to the study of the United States patent system. We model the patent citation network as a discrete time, discrete space stochastic dynamic system. From patent data we extract an attractiveness function, A(k, l), which determines the likelihood that a patent will be cited. A(k, l) shows power law aging and perferential attachment, the exponent of the latter is increasing since 1993, suggesting that patent citations are increasingly concentrated on a relatively small number of patents. In particular, our results appear consistent with an increasing patent “thicket”, in which ...
Membrane Fluctuations Around Inclusions, Christian Santangelo, Oded Farago
Membrane Fluctuations Around Inclusions, Christian Santangelo, Oded Farago
Christian Santangelo
The free energy of inserting a protein into a membrane is determined by considering the variation in the spectrum of thermal fluctuations in response to the presence of a rigid inclusion. Both numerically and through a simple analytical approximation, we find that the primary effect of fluctuations is to reduce the effective surface tension, hampering the insertion at low surface tension. Our results, which should also be relevant for membrane pores, suggest (in contrast to classical nucleation theory) that a finite surface tension is necessary to facilitate the opening of a pore.
Digital Elevation Accuracy And Grid Cell Size: Effects On Computed Topographic Attributes, Rob H. Erskine, Timothy R. Green
Digital Elevation Accuracy And Grid Cell Size: Effects On Computed Topographic Attributes, Rob H. Erskine, Timothy R. Green
Timothy R. Green
Terrain attributes are commonly used to explain the spatial variability of agronomic, pedologic, and hydrologic variables. The terrain attributes studied here (elevation, slope, aspect, and curvature) are estimated readily from digital elevation models (DEMs), but questions remain about how the accuracy and sample spacing of the elevation data affect the estimated attributes. The main objective of this study was to quantify differences in each terrain attribute due to factors affecting DEM accuracy and grid cell size. Three data sources were compared: (i) realtime kinematic global positioning system (RTKGPS); (ii) satellitedifferentially corrected global positioning system (DGPS); and (iii) U.S. Geological ...