abstract the prediction of active earth pressures is essential to the design of retaining walls in case of reinforced and unreinforced soils. in this study, a new analytical method is presented to determine the coefficient of earth pressure. the horizontal slice method is used to compute the active earth pressure behind a rigid retaining wall in consideration of the granular soils. to verify th...

Owing to the high degree of vulnerability of liquid retaining structures to corrosion problem, there are stringent requirements in its design against cracking. In this paper, a prototype knowledge-based system is developed and implemented for the design of liquid retaining structures based on the blackboard architecture. A commercially available expert system shell VISUAL RULE STUDIO working as...

The Super View HTC Hassan Tornambe Disposable Contact Lens (Insight Instruments, Stuart, FL) is a disposable flat contact lens with a cellulose flange and four cellulose footplates. The circular lens is manufactured from high-index optical grade thermoplastic material, with a lens diameter of 13 mm and edge thickness of 4.8 mm (Figure 1A). The anterior surface is flat, whereas the concave poste...

Increased activity of the sympathetic nervous system (SNS) has been thought to be partly responsible for sodium retention in congestive heart failure, since sympatholytic drugs may increase the renal excretion of sodium in dogs (1) and patients (2) with congestive heart failure. Two other observations support the suggestion that changes in adrenergic activity may produce changes in renal functi...

Cruciate-retaining total knee arthroplasty has had high success rates but does not always have optimal functional outcomes. The purpose of this study was to compare 2 polyethylene inserts of varying constraint that were used in a new cruciate-retaining total knee arthroplasty design to determine whether differences were found in clinical or functional outcomes. The use of the newer cruciate-ret...

This paper presents an effective optimization method for nonlinear constrained optimization of retaining structures. A newly developed heuristic global optimization algorithm called gravitational search algorithm (GSA) is introduced and applied for the optimization of retaining structures. The optimization procedure controls all geotechnical and structural design constraints while reducing the ...