A finite volume holographic grating coupler (VHGC) normally illuminated with various incident-beam profiles (such as a Gaussian beam, a flat cosine-squared beam, and an exponential-decay beam) with finite beam widths for input coupling is rigorously analyzed by use of the finite-difference frequency-domain method. The effects of the incident-beam width, the incident-beam position, the incident-...

Automated traffic monitoring and traffic incident detection is becoming a reality thanks to expanding networks of traffic sensors placed on US highways. However, the current state-of-the-art incident detection systems employ algorithms that require significant manual tuning. In this work, we study machine learning traffic detection solutions that are intended to reduce the need for the time con...

On the cvening of 2 November 1988. someone "inrccLcd" lhe Internet with a worm progrnm. That progrnm exploited flaws in utility progrnms in systems based on BSD-derived versions of UNIX. The flaws allowed lhc program to break into those machines and copy itself. thus infccling those syslems. This program eventually spread to thousands of machines. and disrupted nonnal activities and Inlcrnet co...

Incident reporting can be a powerful tool to detect weaknesses in the complex system of anaesthesiology. Having its roots in aviation, incident reporting today is used in a variety of medical disciplines at the local and even on the national level. Strength of incident reporting is the potential for learning from rare and potentially dangerous events. To properly set up an incident reporting sy...

EDITOR: We wish to report a potentially fatal critical incident that occurred during an elective operating theatre list. A similar problem [1] has been recently highlighted by the MHRA but without the emphasis of its potentially fatal nature (Fault in Draeger Vapor 2000/D-Vapor Vaporizer series with the interlocking device, MDA/2006/030) [2]. This series of vaporizers for isoflurane and sevo-fl...

With an overwhelming volume of news reports currently available, there is an increasing need for automatic techniques to analyze and present news to a general reader in a meaningful and efficient manner. Previous research has focused primarily on organizing news stories into a list of clusters by the main topics that they discuss. We believe that viewing a news topic as a simple collection of s...