Last time, we introduced the task of hierarchical clustering, in which we aim to produce nested clusterings that reflect the similarity between clusters. This contrasts sharply with our former discussion of “flat” or structureless clustering methods like k-means which do not model relationships between clusters. In this lecture, we will continue our discussion of the standard model-free approac...

After recalling features of solitons in the Toda (more precisely an adapted Morse-Toda) lattice a succint discussion is provided about the stability of such solitons when the lattice is heated up to physiological temperatures for values of parameters typical of bio-macro-molecules. Then the discussion is focused on the soliton trapping of an added excess (originally free) electron thus creating...

The present paper is a broad-ranging account of free-radical biochemistry in general, and of free-radical mechanisms of tissue injury in particular. Because it is broad-ranging within tight constraints of length it is necessarily lacking in detail on some issues of relevance; the following reviews can be consulted for additional coverage: Slater (1972, 1978, I&), Pryor (1976-84), Mason (1982), ...

OPSOMMING Die opvoedkundige ontwikkeling van verpleging toon 'n interessante verloop. Die daarstelling van doeltreffende en voldoende fasiliteite vir opleiding van basiese verpleegstudente op diplomaen graadvlak sowel as na-basiese kursusse wat aangebied word deur gesondheidsinrigtings en aan universiteite, het ’n daadwerklike invloed op die m othering en belangsteiling van verpleegsters gehad....

Six double-muscled Belgian Blue bulls (initial weight: 345 +/- 16 kg) with cannulas in the rumen and proximal duodenum were used in two juxtaposed 3 x 3 Latin squares to study the effect of a lack of synchronization between energy and N in the rumen on microbial protein synthesis and N metabolism by giving the same diet according to three different feeding patterns. The feed ingredients of the ...

Drie belangrike konsepte word bespreek, naamlik die rol van die eenheidsuster, die gehalte van sorg en verantwoordbaarheid. ’n Model word voorsien waarin die rolle van die eenheidsuster uitgebeeld word — die fokus van haar werk (die pasiënt, span, agentskap, genteenskap en die professie) word aangetoon sowel as die inhoudsgebiede (kliniese sorg, bestuur, onderwys en beleidsbepaling). Die doelwi...