Kogelnik's coupled-wave theory has provided a well-established basis for understanding how light propagates inside a volume hologram, giving an accurate approximation of the diffraction efficiency in this type of hologram. In this paper we elaborate on some aspects of the…

In the 19th century it was difficult for the growing number of medical practitioners in North America to access current medical literature. Various ways were suggested to solve this problem; one of them was the creation of physician-run medical library…

A new technique for analysing the optical quality of the human cornea is presented. Corneal maps are obtained through keratographies and then converted into phase maps. The propagated fields generated from this surface are plotted and studied. It is shown…

Le phénomène des règles administratives (les directives, les politiques, les guides, les manuels) intéresse de plus en plus les juges et les spécialistes du droit administratif. Aucun des critères posés par le droit positif ne peut servir à établir une…

Bleached holograms are one of the most interesting techniques used to produce phase holograms of high quality on photographic emulsions. Of particular interest is the method of fixation-free rehalogenating bleaching. In this paper we will study the influence of the…

Bleaching is one of the most widely used techniques in the production of phase holograms of high quality on photographic emulsion, particularly in rehalogenating techniques without a fixation step. These techniques were very well understood when Agfa 8E75 HD emulsion…

Genetic testing technologies are rapidly moving from the research laboratory to the market place. Very little scholarship considers the implications of private genetic testing for a public health care system such as Canada’s. It is critical to consider how and…

The author examines central legal and philosophical issues pertaining to the regulation of hate speech. In particular, he evaluates the competing perspectives of the "causationist" approach, which requires a direct causal link between the expression it purports to regulate and…

As a way of forecasting future evolution of inequalities in disease burden and mortality, trends in preventive health behaviours by social class were examined. Using the Spanish National Hearth Survey from 1987 to 1997 the evolution of the Health Practices…

The adoption of ISO 9000 has been justified in terms of the many benefits it generate, although problems may also arise. Such advantages and disadvantages lead to different reasons for seeking certification. Based on these reasons, this paper analyzed the…