For most practical purposes, true topology optimization of a braced frame should be synchronized with its sizing. An integrated layout optimization is formulated here to simultaneously account for both member sizing and bracings’ topology in such a problem. Code-specific seismic design spectrum is applied to unify the earthquake excitation. The problem is solved for minimal structural weight un...

finite normalized tight frames are interesting because they provide decompositionsin applications and some physical interpretations. in this article,we give a recursive method for constructing them.

This paper deals with the problem of determining motion and structure for a planar surface and the error estimation. Since the motion of a planar patch is a degenerate case for linear algorithms (algorithms that consist of solving mainly linear equations and give closed-form solution) for general surfaces, the motion of such a planar surface should be considered separately. First, a new algorit...

We consider three-dimensional elastic frames constructed out of Euler–Bernoulli beams and describe a simple process generating joint conditions the geometric description frame. The corresponding differential operator is shown to be self-adjoint. In special case planar frames, decomposes into direct sum two operators, one coupling out-of-plane displacement angular (torsional) other in-plane with...

UNLABELLED The objective of the present investigation was to determine the feasibility of assessing left ventricular systolic ejection and diastolic filling via the automatic edge detection method employing ECG-gated blood pool single-photon emission tomography (SPET GBP) data. METHODS Thirty-five patients, who had undergone both SPET GBP and ECG-gated equilibrium blood pool scintigraphy by t...

this article presents the application of two algorithms: heuristic big bang-big crunch (hbb-bc) and a heuristic particle swarm ant colony optimization (hpsaco) to discrete optimization of reinforced concrete planar frames subject to combinations of gravity and lateral loads based on aci 318-08 code. the objective function is the total cost of the frame which includes the cost of concrete, formw...