7,340 Hits in 4.6 sec

Coplanar Repeats by Energy Minimization [article]

James Pritts, Denys Rozumnyi, M. Pawan Kumar, Ondrej Chum
2017 arXiv   pre-print
This paper proposes an automated method to detect, group and rectify arbitrarily-arranged coplanar repeated elements via energy minimization.  ...  The proposed energy functional combines several features that model how planes with coplanar repeats are projected into images and captures global interactions between different coplanar repeat groups  ...  MINIMIZATION PRITTS, ROZUMNYI, KUMAR, CHUM: COPLANAR REPEATS BY ENG. MINIMIZATION PRITTS, ROZUMNYI, KUMAR, CHUM: COPLANAR REPEATS BY ENG.  ... 
arXiv:1711.09432v1 fatcat:6dozdzwawbho5nsrcugftjthoa

Maximum kinetic energy considerations in proton stereotactic radiosurgery

Evan R. Sengbusch, Thomas R. Mackie
2011 Journal of Applied Clinical Medical Physics  
The purpose of this study was to determine the maximum proton kinetic energy required to treat a given percentage of patients eligible for stereotactic radiosurgery (SRS) with coplanar arc-based proton  ...  If only a single treatment angle is required, 100% of the patients included in the study could be treated by a proton beam with a maximum kinetic energy of 118 MeV.  ...  AcknowLEdgMEntS This work was supported by the Department of Defense (DoD) through the National Defense Science & Engineering Graduate Fellowship (NDSEG) Program and by a National Science Foundation Graduate  ... 
doi:10.1120/jacmp.v12i3.3533 fatcat:6j2g5dtsm5fixcuxggnw4hjn7m

Dislocation subgrain structures and modeling the plastic hardening of metallic single crystals

B L Hansen, C A Bronkhorst, M Ortiz
2010 Modelling and Simulation in Materials Science and Engineering  
Self-hardening is accomplished by an evolution of the subgrain structure length scale. The substructure length scale is computed by minimizing the nonlocal energy.  ...  The minimization of the nonlocal energy is a competition between the dislocation wall energy and the boundary layer energies.  ...  The dimensions of the subgrain structure are determined by minimizing the nonlocal energy. The widths are equilibrated at each deformation step.  ... 
doi:10.1088/0965-0393/18/5/055001 fatcat:pcncjjxbdzbqlnv6st5boy5nrq

Analysis and Optimization of Coplanar RLC Lines for GSI Global Interconnection

A. Naeemi, J.A. Davis, J.D. Meindl
2004 IEEE Transactions on Electron Devices  
The models are then used to optimize the design of coplanar global interconnects.  ...  Compact physical models are derived for the delay and crosstalk of on-chip coplanar transmission lines, which are used in state-of-the-art high-speed microprocessors.  ...  simultaneously maximize data-flux density and minimize latency and energy per bit.  ... 
doi:10.1109/ted.2004.829517 fatcat:snmavx2pqfd4tl6hdtjcj2rceq

Theory of ground states for classical Heisenberg spin systems V [article]

Heinz-Jürgen Schmidt, Wojciech Florek
2020 arXiv   pre-print
The theory is illustrated by a couple of examples of increasing complexity.  ...  For α > αc the coplanar cooperative ground state with minimal energy (43) assumes the role of the ground state (red curve).  ...  For α > αc = 1/2 the coplanar cooperative ground state with minimal energy (29) assumes the role of the ground state (red curve). Its asymptotic limit (30) is given by the red dashed line. B.  ... 
arXiv:2002.12705v1 fatcat:4gc5z4sm4nc65mzykx5qwjqfgu

Triangular Antiferromagnet with Nonmagnetic Impurities

V. S. Maryasin, M. E. Zhitomirsky
2013 Physical Review Letters  
We present analytical arguments confirmed by numerical calculations that at zero temperature vacancies stabilize a conical state providing an example of "order by quenched disorder" effect.  ...  In magnetic field the classical energy is minimized for spin configurations constrained by the magnetization of each triangular plaquette: S △ = H/(3J) . (2) The constraint leaves undetermined the orientation  ...  Comparing the harmonic spin-wave energies of the uud and conical states [20] with the classical energy gain of the conical state obtained from the numerical minimization we find that the 1/3 magnetization  ... 
doi:10.1103/physrevlett.111.247201 pmid:24483694 fatcat:nlal75ecbbgkfjs3gf6mmyqzma

Ordered ground states of kagome magnets with generic exchange anisotropy [article]

Owen Benton
2020 arXiv   pre-print
, (iii) a coplanar, 6-fold degenerate, state with magnetization lying within the kagome plane (E-coplanar), (iv) a noncoplanar, 6-fold degenerate, state with magnetization lying within a mirror plane of  ...  The five phases are: (i) a coplanar, 2-fold degenerate, state with vanishing magnetization (A_1), (ii) a noncoplanar, 2-fold degenerate, state with magnetization perpendicular to the kagome plane (A_2)  ...  It is sixfold degenerate. formulation makes it clear that any configuration which minimizes the energy of each individual triangle, also minimizes the energy of the system as a whole.  ... 
arXiv:2008.04677v1 fatcat:lvtescr7mjhrrhylxwv7hwv4h4

Pulsed Current-Mode Signaling for Nearly Speed-of-Light Intrachip Communication

A.P. Jose, G. Patounakis, K.L. Shepard
2006 IEEE Journal of Solid-State Circuits  
In this paper, we describe the design of on-chip repeater-less interconnects with nearly speed-of-light latency.  ...  Sharp current-pulse data transmission is used to modulate transmitter energy to higher frequencies, where the effect of wire inductance is maximized, allowing the on-chip wires to function as transmission  ...  an optimal number of repeaters to minimize interconnect delay [1] .  ... 
doi:10.1109/jssc.2006.870922 fatcat:mum4txc54fcfxmd2xn3j5pdgue

Characterization of electrowetting actuation on addressable single-side coplanar electrodes

Ui-Chong Yi, Chang-Jin Kim
2006 Journal of Micromechanics and Microengineering  
Various coplanar electrodes are tested for contact angle changes by EWOD with a focus on the effect of the percentage gap between electrodes and are found to be in good agreement with a simple analytical  ...  By arranging driving and reference electrodes on one plate, such an EWOD configuration can accommodate more sensing mechanisms from above and thus allows increased flexibility for system development.  ...  Acknowledgments This work was supported by NASA through the Institute for Cell Mimetic Space Exploration (CMISE) at UCLA.  ... 
doi:10.1088/0960-1317/16/10/018 fatcat:o6vt7c5kujhjpe6lmkadnfb3ma

On the stability of doped conducting polymers: electrostatic contributions and sterical effects

J.T. Lopez-Navarrete, G. Zerbi
1990 Chemical Physics Letters  
Sterical effects induced by bulky substituents affect such preferred configuration and influence the stability of the doped polymers.  ...  Quantum-chemical calculations on models of doped aromatic polymers with bipolarons as charge carriers emphasize the role played by electrostatic interactions between the organic molecule and the dopant  ...  This work has been supported by CNR, Progetto Finalizzato Nuovi Materiali (Paper No. 4 from the Unita Operativa Chimica Industriale, Politecnico ).  ... 
doi:10.1016/0009-2614(90)85529-l fatcat:5f5jdlqeijecxgx7taq5pdwiwa

Registration and interactive planar segmentation for stereo images of polyhedral scenes

Javier Flavio Vigueras, Mariano Rivera
2010 Pattern Recognition  
The two reliable methods cooperate to obtain probabilities for coplanar regions with similar color information that are used to get a new segmentation by means of Quadratic Markov Measure Fields (QMMF)  ...  We search for the best regions by iterating both steps: registration and segmentation.  ...  Acknowledgments This research was supported by CONACYT (grant 43743).  ... 
doi:10.1016/j.patcog.2009.03.012 fatcat:zpid55qrcbgl5ei645qs5xpdsm

A method to determine the polarization of high energy gamma rays

Gerardo O. Depaola, Carlos N. Kozameh, Manuel H. Tiglio
1999 Astroparticle physics  
A method to determine the polarization direction of a very high energy (50 MeV - 30 GeV), linearly polarized gamma ray is analyzed and discussed.  ...  We investigate the behavior of this function for different angular resolutions of the measuring apparatus and different energies of the incoming pairs.  ...  ACKNOWLEDGEMENTS This work was partially supported by grants from CONICET, CONICOR, and the National University of Córdoba. GOD and CNK acknowledge financial support from AIT, and MHT from CONICOR.  ... 
doi:10.1016/s0927-6505(98)00054-1 fatcat:hp6mrylvfvgsldq7uoifhgvv2q

High-Order Coupled Cluster Method Calculations using Three-Dimensional Model States: An Illustration for the Triangular-Lattice Antiferromagnet in an External Field [article]

Damian J. J. Farnell, Andrew I. Croudace
2014 arXiv   pre-print
By contrast, non-coplanar "three-dimensional" (3D) model states can lead to imaginary terms in the new Hamiltonian after rotation.  ...  In principle, however, macroscopic quantities predicted by the CCM (such as the ground-state energy and order parameter) should still be real (even though the Hamiltonian may be complex) because the transformations  ...  Values of λ were varied incrementally and the minimization process of the energy with respect to the canting angles repeated.  ... 
arXiv:1312.0785v2 fatcat:tr7zwkquwvhalda7mazeummsqe

Beam orientation optimization for intensity modulated radiation therapy using adaptivel2,1-minimization

Xun Jia, Chunhua Men, Yifei Lou, Steve B Jiang
2011 Physics in Medicine and Biology  
By optimizing a total energy function containing a dosimetric term and the sparsity term, we are able to identify the unimportant beam angles and gradually remove them without largely sacrificing the dosimetric  ...  In this paper, we have developed a BOO algorithm via adaptive l_1 minimization.  ...  Acknowledgements This work is supported in part by the University of California Lab Fees Research 10 Program.  ... 
doi:10.1088/0031-9155/56/19/004 pmid:21891848 fatcat:64whgvb3sjbhhmux6fsyeevsu4

QCA Circuits for Robust Coplanar Crossing

Sanjukta Bhanja, Marco Ottavi, Fabrizio Lombardi, Salvatore Pontarelli
2007 Journal of electronic testing  
In this paper, different circuits of Quantum-dot Cellular Automata (QCA) are proposed for the so-called coplanar crossing.  ...  However, the characteristics of the coplanar crossing make it prone to malfunction due to thermal noise or defects.  ...  The children states (or polarization) are chosen such that W is maximized i.e. to minimize the ground state energy over all possible ground states of the cell.  ... 
doi:10.1007/s10836-006-0551-y fatcat:zqgjbdmirfbc5lcexhbulosbaq
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