Hydraulic Elevators for Hoisting Placer Tailings

Improvement in Hydraulic Elevators

Fragility of Hydraulic Elevators for Use in Performance-Based Earthquake Engineering

New performance-based earthquake engineering methods developed by the Pacific Earthquake Engineering Research Center, the Applied Technology Council, and others include damage analysis at a highly detailed level, requiring the compilation of fragility functions for a large number of damageable generic structural and nonstructural components. This brief paper presents the development of a fragil...

A macro placer algorithm for chip design

There is a set of rectangular macros with given dimensions, and there are wires connecting some pairs (or sets) of them. We have a placement area where these macros should be placed without overlaps in order to minimize the total length of wires. We present a heuristic algorithm which utilizes a special data structure for representing two dimensional stepfunctions. This results in fast integral...

Routing of two elevators

There are many approaches to model an elevator routing system. In this paper, I shortly describe some literature, wherein different manners to model the routing system are presented. A simulation approach, dynamic programming and polling systems are used to model the routing system. In the simulation approach zoning is often used. Zoning means that the floors are split into a number of zones, e...

Operating molecular elevators.

Inspired by the concept of multivalency in living systems, two mechanically interlocked molecules have been conceived that incorporate not once or twice but thrice the features of a pH-switchable [2]rotaxane with two orthogonal recognition sites for dibenzo[24]crown-8 (DB24C8), and 2,3-dinaphtho[24]crown-8 (DN24C8)-one a dialkylammonium ion (CH(2)NH(2)(+)CH(2)) and the other a bipyridinium dica...