This paper mainly studies the behavior of axisymmetric radial interaction between soil and structure under stress. Considering possible factors in interaction, such as arching effect caused by finite curvature, a simplified model is established. The influence curvature change on stress field, strain displacement field stress-strain relationship analyzed. Finally, status various their changes ar...

A deep bed of granular material (more than six layers ofparticles) was subjected to sinusoidal, vertical vibrations. Several phenomena were observed depending on the amplitude of excitation. These included heaping, surjCace waves, and arching; the transitions from one state to another involved various dynamic instabilities and bifitrcations. The paper includes a description of these phenomena a...

This report describes a case in which a persistent third aortic arch connection partly palliated interruption of the aortic arch. The malformation occurred without other cardiovascular abnormality in a newborn infant in whom the principal diagnostic clinical finding was the absence of all peripheral pulses except for those of the right brachial and carotid arteries. Echocardiographic and angioc...

SIGMOD has had for the past few years an over-arching vision of enabling all information on the database field to be freely accessible to everyone. Of course, this goal runs smack into the economic realities of scientific publishing. So the SIGMOD Executive Committee over the period of 1997–2001 tempered its initial goals to the following strategy, emphasizing free CDROM accessibility first, fo...

Predicting the inner displacements of deep vertical shafts during excavation process has been a difficult task considering geological, structural, and constructional influences. In fact, two-dimensional (2D) analytical solution based on retaining wall model remains insufficient for understanding actual behavior an excavation. This is because deformation becomes complicated due to unexpected arc...

Cross-sectional echocardiography (CSE) was performed on 19 patients with mitral stenosis (MS). Nine patients (group 1) had little or no mitral valve (MV) calcification; ten patients (group 2) had heavy MV calcification. An opening snap was present in each of the patients in group 1. Of the group 2 patients, five (group 2A) had an opening snap and five (group 2B) did not. CSE in the long axis re...

In the current paper the results of a numerical simulation that were verified by a well instrumented experimental procedure for studying the arching effect over a trapdoor in sand is presented. To simulate this phenomenon with continuum mechanics, the experimental procedure is modeled in ABAQUS code using stress dependent hardening in elastic state and plastic strain dependent frictional harden...