Communications of the AcmDori D.Dimensioning analysis: toward automatic understanding of engineering drawing, Commun. ACM . 1992 Dori,Dov - 《Communications of the Acm》 被引量: 57发表: 1992年 Symmetry based semantic analysis of engineering drawings Engineering drawings have posed significant challenges...
A simple method of analyzing symmetries of a line drawing is presented. The procedure consists of three stages: (1) computing the axes of 'microsymmetry' for pairs of microsegments based on the mean square error criterion, (2) mapping the axes into two-dimensional parameter space, and (3)...
Symmetry is the study of mapping of a state space into itself that leaves a geometric object, generally a set of subspaces defined by an equivalence relation, invariant. Thus, in economics, we can examine whether there exists a transformation to which the indifference curves, subspaces defined by...
A first critical issue was determining the actual phase coexistence at the MPB, namely discriminating whether the polymorphic phase in coexistence with the tetragonal component was rhombohedral or monoclinic, for lattice transverse softening is characteristic of the latter symmetry. This was done by using...
In this work, a theory of color symmetry is presented that extends the ideas of traditional theories of color symmetry for periodic crystals to apply to non-periodic crystals. The color symmetries are associated to each of the crystallin... EP Bugarin,M.L.A. DE LAS PEN˜ AS 被引量: ...
About analytic problem of the 3D-non-axissymmetry metal pipe drawing velocity field, the papertransforms non-axis symmetry drawing problem into axissymmetry's with mathematics theory of the complex functionconformal transformation, solves non-symmetry metal pipedrawing velocity field and thickness homogenei...
Given graph layouts probably generated by classical algorithms as the inputs to our algorithm, experimental results reveal that our approach produces promising drawings (especially for trees and hypercubes) not only preserving the original properties of a high degree of symmetry and uniform edge length...
Real versus artifactual symmetry-breaking effects in Hartree–Fock, density-functional, and coupled-cluster methods We have examined the relative abilities of Hartree–Fock, density-functional theory (DFT), and coupled-cluster theory in describing second-order (pseudo) J... R Nj.,C Td.,T Gs. ...
G Ameta,JK Davidson,J Shah - 《Precision Engineering》 被引量: 25发表: 2010年 Scholars' Mine Scholars' Mine Computational Complexity of Geometric Symmetry Detection in Computational Complexity of Geometric Symmetry Detection in Graph... Constructing a visually informative drawing of an abstract graph...
companies. The chapter highlights the symmetry between these two projects – between these two ages of liberal power in the twentieth century – and probes the thin line that separated white supremacy from liberal paternalism during these years. 展开 关键词: U.S. foreign policy decolonization ...