This paper presents a modelling approach that can be used by contractors to plan elevated highway reconstruction projects. The proposed model estimates the project duration, productivity rate of the operation, and visualizes the output using 4D modelling. In this paper, the focus is on the demolition and construction of a box girder elevated highways as part of an interchange reconstruction pro...

Aprevlously unpublished 1986 evaluation of walkway demolition on a London public housing estate Is re-presented. It compares popularly reported views that the removal of walkways reduced crime with the police crime record for the estate. No general crime reduction took place as was claimed. However, closer examination of time series data revealed some significant changes in crime patterns. Good...

The incidence of lead poisoning in industry has fallen dramatically since the beginning of the twentieth century. This reduction has been partly attributable to increased awareness, improved ventilation and hygiene facilities, and technical changes which have allowed other substances to replace lead, but improved medical surveillance of workers exposed to lead in certain defined industries has ...

The Basic Underwater Demolition SEAL (BUD/S) training program is a six-month rigorous program that prepares trainees for specialized instruction before being assigned to a SEAL team. Two major but separate issues affect this program: stress fractures and attrition. Stress fracture rates are around 5-9% and may lead to attrition or training delays. Ultimately, only about 25% of trainees complete...

Received: March 17, 2017 Revised: July 25, 2017 Accepted: August 18, 2017 Abstract: Introduction: For technical renovation of the thermal plant, one frame structure workshop of 50,000 m construction area and one reinforcement concrete chimney of 150m height shall be demolished by blasting in the same time. The engineering environment is very complicated and the accommodation space for the struc...

We propose an experiment where quantum interference between two different paths is modulated by means of a QND measurement on one or both the arms of an interferometer. The QND measurement is achieved in a Kerr cell. We illustrate a scheme for the realisation of this experiment and discuss some further developments.