This paper is one of several contributions in a series, illustrating the application of a specific deductive methodology to explain diversity of form. The methodology facilitates the explanation of feeding morphologies in various ducks as a transformation of the mallard's feeding design maximized for specific proportions of performance that are contributed by pecking and filter feeding mechanisms.The earlier described anatomy and formal analyses of the three mechanisms in the mallard served as the initial conditions used in simulation models. Four elements (...) of the feeding system were chosen that play a major role in all three mechanisms. For each element, the main parameter was selected: storage capacity of the rostral mouth cavity, transport capacity of the rostral mouth tube, storage capacity of the caudal mouth cavity and transport capacity of the caudal mouth tube. The boundary conditions for the simulation were determined from internal organismic constraints. The total food uptake of the mallard was regarded as the function to be maximized. This object function is the summation of the food uptake by one second of pecking and one second of filter feeding. The drinking mechanism was shown not to interfere, since that mechanism operates sufficiently whenever the pumping mechanism works properly. (shrink)

The texts collected in this volume, which was originally published in 1969, contain Herder's most original and stimulating ideas on politics, history and language. They had for the most part not been previously available in English. In his introduction, Professor Barnard analyses the basic premises of Herder's political thought against the background of the Enlightenment. He examines Herder's concepts of language, community and culture, his theory of historical interaction, and his approach to the problem of change and progress. Finally, he (...) provides a brief comparative analysis of traditionalist thought following the French Revolution, showing how substantive writers like Burke differed from Herder despite the close similarity of political vocabulary. (shrink)

The rôle of mathematical models in growth studies is discussed and a distinction made between the structural and descriptive aspects of a mathematical formulation. A simple scheme is set up to represent in broad outline the simultaneous growth and interaction of larval and adult systems inMyrmica rubra and is matched against observed results.

Judges face difficult choices when the birth and genetic mothers of a child are separate people who dispute maternal access; the views of the general population may help them. Fifty women were asked whether, if they were infertile and could have only one child, they would prefer to be birth mothers (to carry a baby which was not genetically theirs) or genetic mothers (to have another woman carry their genetic baby). Similarly, fifty men were asked about their preference for a (...) partner's child. In both groups the strength of preferences was measured using a lottery technique. The direction and strength of preferences was similar between men and women, and approximately equally divided between birth and genetic motherhood. These attitudes should be taken into account by those adjudicating custody disputes between such mothers. (shrink)

To describe the content of practice guidelines on euthanasia and assisted suicide (EAS) and to compare differences between settings and guidelines developed before or after enactment of the euthanasia law in 2002 by means of a content analysis. Most guidelines stated that the attending physician is responsible for the decision to grant or refuse an EAS request. Due care criteria were described in the majority of guidelines, but aspects relevant for assessing these criteria were not always described. Half of the (...) guidelines described the role of the nurse in the performance of euthanasia. Compared with hospital guidelines, nursing home guidelines were more often stricter than the law in excluding patients with dementia (30% vs 4%) and incompetent patients (25% vs 4%). As from 2002, the guidelines were less strict in categorically excluding patients groups (32% vs 64%) and in particular incompetent patients (10% vs 29%). Healthcare institutions should accurately state the boundaries of the law, also when they prefer to set stricter boundaries for their own institution. Only then can guidelines provide adequate support for physicians and nurses in the difficult EAS decision-making process. (shrink)

In his treatment of the One and the Many in the Science of Logic, is Hegel talking about atoms? He is and is not. He discusses critically the atoms and the void of the ancients as part of his own presentation of a being-for-self One from which the Many purportedly derive. The void of the ancients is seen by Hegel as the ground of movement, but not in the representational sense as affording "room," in which case it would be a (...) presupposition, not a ground. The void is properly conceived as the ground of movement not sensuously or pictorially, says Hegel, but "only as the negative relation of the One to its negative, to the One, i.e., to its own self, which nevertheless is posited as a determinate being." With such an ontological One that in its own being is immanently related to its other, Bloch seeks to show, thinking is freed once and for all from traditional atomism’s pregiven particulate corpuscles fortuitously combining and separating in a pregiven space and time. Hegel’s One is at the same time a plurality of ones, ideal atoms immanently related in their being and requiring no extraneous "forces" to set them in motion or in process with one another. Modern theoretical physics, which concedes the inadequacy of sensuous and intuitive thinking, would do well to note Hegel’s criticisms of historical atomisms and to re-examine the possibilities in Hegel’s Atomistik for new ways of conceiving physical reality. (shrink)

The authors focus on four major thematic areas – the reform of church, the reform of theology, the reform of perspective, and the reform of method – which together encompasses the breadth and depth of Cusanus’ own reform initiatives.