The problem of a homogeneous isotropic elastic layer resting on rigid base and loaded by an internal point force is analytically investigated under plane strain conditions. displacement field sought as the superposition fundamental solution (doublet state) which allows satisfying boundary conditions at upper lower boundaries layer. represented through convergent Fourier integral transforms. Onc...

background: visualattention is known as acritical base for learning.thepurpose of the present study was to design, develop and evaluate the test-retest and internal consistency reliability as well as face, content and convergent validity of thecomputer- based selective visual attention test (sevat) for healthy first-grade school children.   methods :in thefirst phase of this study,the computer-...