[An improvised microfilm reader]

An improvised ethyl chloride attachment.

THE sequence nitrous oxide-oxygen-ethyl chloride is one which has been successfully used by a number of anaesthetists for many years, especially when a pleasant induction followed by brief but deep anaesthesia and rapid recovery, is desired—e.g. for guillotine tonsillectomy in children. The accompanying photograph illustrates an improvisation to a standard Boyle machine with a Magill attachment...

An Experiment in Improvised Interactive Drama

To inform the design of interactive drama systems, we investigate the experience of an interactor being part of a story that they can have a fundamental influence on. Improvisational theatre might serve as a model for this experience, where there is no pre-scripted plot; each of its actors shares responsibility for the collaborative emergence of a story. This requires a performer attitude from ...

Microfilm Service Units

Probabilistic DCS: An RFID reader-to-reader anti-collision protocol

The wide adoption of Radio Frequency Identification (RFID) for applications requiring a large number of tags and readers makes critical the reader-to-reader collision problem. Various anticollision protocols have been proposed, but the majority require considerable additional resources and costs. Distributed Color System (DCS) is a state-of-the-art protocol based on time division, without notew...

An Improved and Improvised Wavelet Watermarking Scheme

This paper will discuss the modification and improvisation of two different wavelet watermarking techniques: Tree Quantization and Pixel-Wise Masking. Both techniques use Discrete Wavelet Transforms (DWT) of four levels to embed their watermarks in completely different methods. These methods have been modified from their original descriptions to assist in our use and testing. The watermark itse...