منابع مشابه
Braces and brace management.
General Principles of Bracing Within recent years, reemphasis upon the rehabilitation of severely disabled individuals has "spotlighted" the importance of proper lilting braces in the teaching of ambulation and daily activities. There seem to be several points of view regarding the intelligent selection of braces for lower extre mities. One group holds that patients should be braced maximally ...
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The high-density epicardial mapping plaque used in this study provides coverage of 10% of the atria and hence has a narrow field of view relative to the global bi-atrial surface area. Thus from a segment of atria mapped, we could only determine whether a rota-tional circuits or a focal source is present and not whether it was critical in driving wavefronts elsewhere in the atria. It is possible...
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There are many long-standing open problems on cubic bridgeless graphs, for instance, Jaeger’s directed cycle double cover conjecture. On the other hand, many structural properties of braces have been recently discovered. In this work, we bijectively map the cubic bridgeless graphs to braces which we call the hexagon graphs, and explore the structure of hexagon graphs. We show that hexagon graph...
متن کاملLinear and Nonlinear Stability Analysis of Trusses
This paper presents a comparison of critical loads for trusses, calculated by linear and nonlinear stability analysis. Analyses are provided by using finite elements method. In linear case, critical load is extracted from derived algebraic eigenvalue problem. In case of nonlinear analysis, critical load is determined by construction of postbuckling equilibrium path. Numerical examples for chara...
متن کاملTrusses, NP-Completeness, and Genetic Algorithms
The optimization of large trusses often leads to a nearly optimal solution, rather than a truly optimal design. In fact, the problem space for truss optimization grows exponentially with the size of the truss. Using the method of problem reduction, this paper demonstrates that truss optimization is in the set of NP-complete problems. Hence, the only practical techniques for solving the truss pr...
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ژورنال
عنوان ژورنال: Transactions of the American Mathematical Society
سال: 2018
ISSN: 0002-9947,1088-6850
DOI: 10.1090/tran/7705