The rope-less elevator driven by Permanent Magnet Linear Synchronous Motor (PMLSM) is a new technology for high-rise buildings. In the practical operation, PMLSM inevitably encounters various kinds of turbulences which directly affect the rope-less elevator’s operation. The braking system is important for rope-less elevator safe and steady operation. Usually, the ordinary inspections are not ab...

twenty six patients with double elevator palsy (dep) (ranging from 25-90 pd), who had undergone either callahan or knapp-modified-kanpp procedure from february, 1981 to february, 1994, were reviewed. we achieved acceptable results in correction of hypotropia in primary position. three patients gained peripheral fusion and after reviewing the results we concluded that in patients having large-an...

The task of an elevator control is to schedule the elevators of a group such that small average and maximal waiting and travel times for the passengers are obtained. We present a novel exact reoptimization algorithm for this problem. A reoptimization algorithm computes a new optimal schedule for the elevator group each time a new passenger arrives. Our algorithm uses column generation technique...

A space elevator is a tall tower rising from a point on the Earth’s equator to a height well above a geostationary orbit, where it terminates in a counterweight. Although the concept is more than a century old, it was only with the discovery of carbon nanotubes that it began to receive serious scientific attention. NASA commissioned a study of the space elevator in the late 1990s that examined ...

Soybeans received at 12 central Iowa elevators in 1985-1987 were analyzed for protein and oil content. The standard deviation among deliveries to an individual elevator was 1.0 and 0.5 percentage points for protein and oil, respectively. About 15% of samples were above average in both nutrients. About 15% were below average in both nutrients. The rest were above average in one and below average...

In order to get a globally optimized solution for the Elevator Group Control System (EGCS) scheduling problem, an algorithm with an overall optimization function is needed. In this study, Real-time Particle Swarm Optimization (RPSO) is proposed to find an optimal solution to the EGCS scheduling problem. Different traffic patterns and controller mechanisms for EGCS are analyzed. This study focus...

In high-rise buildings, elevators must be safely and efficiently moving people during daytime. Generally, elevator up-peak traffic is predominant traffic between a lobby and various upper floors. Especially, the main expectation from elevators in buildings is increasing in a rush-hour time. Therefore, the passenger’s waiting time in their floor are increased. We can say that the services given ...

The car dispatching problem in an elevator group consists of assigning cars to the hall calls at the same time that car call are served. The problem needs to coordinate the movements of individual cars with the objective of operating efficiently the whole group. In this paper, we propose an elevator group control system based on a genetic algorithm which makes use of a novel fitness function to...

background: microorganisms on various surfaces in industrial and residential environments can spread infectious diseases. their control is thus a major concern. the aim of this study was to survey the bacterial contamination of elevator buttons in schools of isfahan university of medical sciences, isfahan, iran in the summer of 2011. methods: this study was done as a cross sectional research. a...

This study aimed to evaluate whether a stair-promoting signed intervention could increase the use of the stairs over the elevator in a health-care facility. A time-series design was conducted over 12 weeks. Data were collected before, during and after displaying a signed intervention during weeks 4-5 and 8-9. Evaluation included anonymous counts recorded by an objective unobtrusive motion-sensi...