This book constitutes the Proceedings of the NATO Advanced Research Workshop on Conjugated Polymers held at the University of Mons, Belgium, during the first week of September 1989. The Workshop was attended by about fifty scientists representing most of the leading research groups within NATO countries, that have contributed to the development of conjugated polymeric materials. The program was focused on applications related to electrical conductivity and nonlinear optics. The attendance was well balanced with a blend of researchers from academic, industrial, and government labs, and...

Nonlinear statistical modelling is an area of growing importance. This monograph presents mostly new results and methods concerning the nonlinear regression model.
Among the aspects which are considered are linear properties of nonlinear models, multivariate nonlinear regression, intrinsic and parameter effect curvature, algorithms for calculating the L₂-estimator and both local and global approximation. In addition to this a chapter has been added on the large topic of nonlinear exponential families.
The volume will be of interest to both experts in the field of...

Thirty years ago, our attention was drawn to the alphabetical incom- itances in strabismus. As an elevation in adduction is the most frequent incomitance, we decided to start treating these incomitances. A weak- ening procedure of the inferior oblique muscle seemed indicated. How- ever, since we wanted to prevent a torsional overcorrection with a head tilt, we displaced the scleral insertion of the oblique muscle towards the equator of the globe. This way, the torsional action of the muscles is saved. A weakening of the horizontal rectus muscles was systematically added, making it a...

The authors of this book are busy practical men with no particular barrow to push. The text of the book includes a comprehensive review of all aspects of intraocular lens surgery including details of the design, optics chem istry and sterilization of intraocular lenses. Its value is enhanced by excellent illustrations and extensive tabulated references to the litera ture. Accounts of patient acceptability are balanced against candid discus sion of complications and their management. The historical introduction recalls that in the early stages of develop ment of the art, over a period of 10...

Dominant exudative vitreoretinopathy (DEVR) is an eye disease which has only recently received wider attention. In 1969 Criswick and Schepens used the designation "familial exudative vitreoretinopathy" to describe a syndrome they observed in six patients belonging to two families. The condition was characterized by several symptoms involving the vitreous and retina, e. g. "posterior vitreous detachment, organized vitreous membranes, heterotopia of the macula, retinal neovascularizations, subretinal and intraretinal exudates, and localized retinal detachment". The clinical features impressed...

In its long series of annual reports, the Belgian Society of Ophthal- mology has a tradition of bringing into focus the recent advances in ophthalmology. But it seems surprising that one has to go back to 1940 to find a major report on the corneal diseases, when R. Rub- brecht wrote an "Aperr;u de la pathologie et de la therapeutique generale des maladies de la cornee". However, this omission is only apparent. In fact, many reports, since then, have contributed to our knowledge of the advances in corneal research. The corneal dimensions were documented in "La biometrie ocu- laire clinique (Y....

The need to study the corneal complications of measles was not very obvious. Everyone knew of the (kerato) conjunctivitis of measles and considered it to be an innocuous feature of the disease. Every medical worker in developing countries knew that measles in under- or malnourished children runs a very serious course leading to, e. g., corneal The latter are seen frequently that medical workers in complications. developing countries are in the habit of speaking of post-measles blind ness. The aspect of the cornea in post-measles blindness is reminiscent of the keratomalacia in vitamine A...

This atlas is the fruit of a many years' ex- eet atlas est Ie fruit d'une longue experience Dieser Atlas ist das Ergebnis langjlihriger Er- perience in the application of anatomico-clini- de la methode anatomo-clinique appliquee a fahrung mit der auf die ophthalmologische cal methods to ophthalmological oncology. I' oncologie ophtalmologique. Onkologie angewandten anatomisch-klini- schen Methode. In the field of ophthalmology, as in other En Ophtalmologie comme dans les autres dis- medical areas, oncology has progressively in- ciplines medicales, I' allongement progress if Wie auch in anderen...