Escalator to extinction

Escalator-related injuries in children.

OBJECTIVE Escalator-related trauma is uncommon but can cause significant injury. This study reviewed escalator-related injuries in children to determine risk factors, types of injuries, medical interventions, and long-term outcomes. DESIGN AND SETTING Retrospective clinical patient series, Municipal Hospital Pediatric Emergency Service. Participants. All children less than 18 years of age who...

Get on the skills escalator.

A Least Squares Approach to Escalator Algorithms for Adaptive Filtering

Namyong Kim 155 In this paper, we introduce an escalator (ESC) algorithm based on the least squares (LS) criterion. The proposed algorithm is relatively insensitive to the eigenvalue spread ratio (ESR) of an input signal and has a faster convergence speed than the conventional ESC algorithms. This algorithm exploits the fast adaptation ability of least squares methods and the orthogonalization ...

Intra-Golgi transport: escalator or bucket brigade?

1. The Problem One of the great debates of current cell biology is centered around a puzzling dilemma that lies at the very heart of the Golgi apparatus: How can the structural and functional integrity of this organelle be maintained in face of a constant flux of secretory products through its midst? This question relates to the different roles that the Golgi plays in the secretory pathway. It ...

An escalator structure for adaptive beamforming

The standard IIIS algorithms for adaptive beamforning though straightforward, suffer from the main draw back of having slow, convergence rate. This is normally attributed to the wide range of spread of eigenvalues of the input signal vector correlation matrix. By properly pr-whitening the input signal vector these eigenvalues can be equalized thereby improving the convergence rate. An Escalator...