background and aims. the aim of this study was to compare flexural strength of specimens processed by conventional and injection-molding techniques. materials and methods. conventional pressure-packed pmma was used for conventional pressure-packed and injection-molded pmma was used for injection-molding techniques. after processing, 15 specimens were stored in distilled water at room temperatur...

The effects of the size a designed fire on ventilation system an adjacent zone is estimated in this study based visibility requirement 5 m non-fire at 600 s after ignition. To verify adequacy dynamics simulator (FDS) input file, smoke movement and ceiling temperature under hot test conditions AS4391-1999 were compared with those from FDS results. average temperatures measured 12 locations withi...

The present study analyzed the development of manual midline crossing in a sample of one hundred sixty 2- to 6-year-old children and considered test construction factors that could affect the test design. The test construction factors addressed were (a) the effect of biasing the hand used for object manipulation and (b) the effect of distance from midline required for task completion on the fre...

The local structure of La 1 .~Ca~MnO 3 is determined from pair-distribution function (PDF) analysis of pulsed neutron diffraction. We have compared the effect on the local structure of crossing the metal-insulator transition as a function of temperature and composition. Crossing the metal insulator boundary at low temperature by varying the composition yields similar distortions to those seen i...

In many global Optimization Problems, it is required to evaluate a global point (min or max) in large space that calculation effort is very high. In this paper is presented new approach for optimization problem with subdivision labeling method (SLM) but in this method for higher dimensional has high computational. SLM Genetic Algorithm (SLMGA) in optimization problems is one of the solutions of...

We present a phase retrieval method (PRM) for analyzing single-phase displacement interferometry measurements on rapidly changing velocity histories, including photon Doppler velocimetry (PDV). PRM identifies the peaks and valleys as well as zero-crossing points in a PDV time series, performs normalization and extracts point-by-point phase and thus velocity information. PRM does not require a w...

in this article we study steensen method to solve nonlinear matrix equation x+a^t x^(-1) a=q, when a is a normal matrix. we establish some conditions that generate a sequence of positive denite matrices which converges to solution of this equation.

For a set of points in the plane, a crossing family is a set of line segments, each joining two of the points, such that any two line segments cross. We investigate the following generalization of crossing families: a spoke set is a set of lines drawn through a point set such that each unbounded region of the induced line arrangement contains at least one point of the point set. We show that ev...