Model for efficiency optimization of electric elevator drive is presented in this paper. It combines two strategies for efficiency optimization: Loss model control and Search control. Search control technique is used in a steady state of drive and loss model during transient processes. As a result, power and energy losses are reduced, especially when load torque is significant less related to i...

Efficient vertical mobility is a critical component of tall building development and construction. This paper investigates recent advances in elevator technology and examines their impact on tall building development. It maps out, organizes, and collates complex and scattered information on multiple aspects of elevator design, and presents them in an accessible and non-technical discourse. Impo...

The Swedish National Audit Bureau has developed a model to present decision material in the public sector including effects on quality. In the article the model is illustrated with an example that deals with improved housing for elderly through installation of elevators in three story houses. The model consists of a social cost-benefit analysis and a financial analysis. In this case financial a...

In the metropolitan areas in Japan, in many stations, shopping areas are set up, and escalators and elevators are installed to make the stations be barrier-free. Further, many areas around the stations are being redeveloped. Railway business operators want to know how much effect these circumstances have on attractiveness of the station or number of passengers using the station. So, we performe...

BACKGROUND This study tested the effectiveness of a stair use promotion strategy in visible and hidden stairwells during intervention and post intervention follow up. METHODS A quasi-experimental study design was used with a 1 week baseline, a 3 week intervention, and post intervention at 2 and 4 weeks in 4 university buildings in San Antonio, Texas with stairwells varying in visibility. Part...

A new system for measuring the cross-sectional area profiles of amputation stumps and whole limbs has been designed at the Amputee Research Centre. The instrument consists of a cylindrical tank supported on an elevator. The tank is raised to the height of the amputation stump and filled with water. A graph of the cross-sectional area profile of the amputation stump is generated by a mini-comput...

This paper presents the systems and results for the Event Detection task of the TRECVid 2008 evaluation campaign. The kind of events addressed are single-actor, without requiring detailed tracking of body parts; rather the body as a whole is considered and the interaction between people is not addressed. The events thus considered are the OpposingFlow, PersonRuns and ElevatorNoEntry. For the fi...

Art). Elevator, Gerhard Richter, 1984, Oil on Canvas.

The word “serendipity” is considered very difficult to define; it may be considered “A talent for making fortunate discoveries while searching for other things”. The history of sexual medicine teaches us the importance of serendipity along with research. Serendipity in the year 1988 was initiated by a slow elevator. Dr. Jacob Rajfer, Professor of Urology, had attended a meeting on the 2 floor o...