Programmable remapper for image processing

A video-rate coordinate remapper includes a memory for storing a plurality of transformations on look-up tables for remapping input images from one coordinate system to another. Such transformations are operator selectable. The remapper includes a collective processor by which certain input pixels of an input image are transformed to a portion of the output image in a many-to-one relationship. The remapper includes an interpolative processor by which the remaining input pixels of the input image are transformed to another portion of the output image in a one-to-many relationship. The invention includes certain specific transforms for creating output images useful for certain defects of visually impaired people. The invention also includes means for shifting input pixels and means for scrolling the output matrix

Worker well-being and the importance of work: bridging the gap

The importance of worker well-being is widely-embraced both in theory and policy, but there are numerous perspectives on what it is, how to measure it, whether it needs improving and if so, how to improve it. We argue that a more complete approach to worker well-being needs to consider workers as full citizens who derive and experience both public and private benefits and costs from working. A broad framework on the meanings of work is used to expand the boundaries of worker well-being to reflect the broad importance of work in human life

A test for the selective origin of environmentally correlated allozyme patterns

Differences in the kinetic and/or endurance properties of enzymes encoded by alternative alleles have been suggested as the basic level at which selection could act on allozyme polymorphisms1,2. The correlation between spatial differences in gene frequencies and an environmental variable (hereafter designated cline, in its widest sense), when not spurious, has been proposed to show the working of selection3. Let us suppose that a given cline has originated through an environmentally imposed selection on enzyme activity. Because differences in enzymatic activities among individuals can be split into structural-gene and 'genetic-background' components4-6, selection should act on both components in the same direction. That is, a correlation should exist between the environmental variable and the background component and it should be of the same sign as that between the environmental variable and the frequency of the most active allele. It should be less likely for clines conforming to these expectations to be spurious. Here we have investigated the relationship between the alcohol dehydrogenase locus (Adh) polymorphism and temperature in Spanish populations of Drosophila melanogaster and have found that it meets the above criterion. © 1980 Nature Publishing Group