Daisy gives an evolutionary answer

An Evolutionary Genetic Answer to a Central Ethical Question

Evolutionary profiles derived from the QR factorization of multiple structural alignments gives an economy of information.

We present a new algorithm, based on the multidimensional QR factorization, to remove redundancy from a multiple structural alignment by choosing representative protein structures that best preserve the phylogenetic tree topology of the homologous group. The classical QR factorization with pivoting, developed as a fast numerical solution to eigenvalue and linear least-squares problems of the fo...

Daisy Visualization for Graphs

Since graphs are ubiquitous representations of data that are used in many applications, creating graph layouts is an important problem. These graph layouts are usefully discussed in terms of aesthetics that originated from mathematical concepts. In contrast, we explore the use of alternative aesthetics to inspire the visualization of graphs. We present Daisy Visualization, for which we have des...

Quaternary Prevention, an Answer of Family Doctors to Overmedicalization

In response to the questioning of Health Policy and Management (HPAM) by colleagues on the role of rank and file family physicians in the same journal, the author, a family physician in Belgium, is trying to highlight the complexity and depth of the work of his colleagues and their contribution to the understanding of the organization and economy of healthcare. It addresses, in particular, the ...

Daisy chains with three generators

For many positive odd integers n, whether prime, prime power or composite, the set Un of units of Zn contains members u, v and w, say with respective orders ψ, ω and π, such that we can write Un as the direct product Un = 〈u〉 × 〈v〉 × 〈w〉. Each element of Un can then be written in the form uvw where 0 ≤ i ≤ ψ − 1, 0 ≤ j ≤ ω− 1 and 0 ≤ k ≤ π− 1. We can then often use the structure of 〈u〉×〈v〉×〈w〉 ...