Conservation biologists mostly agree on the need to identify and protect biodiversity below the species level but have not yet resolved the best approach. We addressed 2 issues relevant to this debate. First, we distinguished between the abstract goal of preserving the maximum amount of unique biodiversity and the pragmatic goal of minimizing the loss of ecological goods and services given that...

Let us suppose that organ transplant procedures have been perfected; in such circumstances if two dying patients could be saved by organ transplants then, if surgeons have the requisite organs in stock and no other needy patients, but nevertheless allow their patients to die, we would be inclined to say, and be justified in saying, that the patients died because the doctors refused to save them...

since the rate of return on different opportunities for investment is random, the optimal distribution of ones capital is put foreward as a stochastic control problem. in this paper, using modem techniques in the theory of random functions and the stochsatic calculus, the problem is discussed for the case when the information possessed by the different investors, as well as their probability be...

We present a study in which mathematicians and undergraduate students were asked to explain writing what mean by proof. The 175 responses evaluated using comparative judgement: compared pairs of their judgements used construct scaled rank order. provide evidence establishing the reliability, divergent validity content this approach investigating individuals’ written conceptions mathematical In ...

BACKGROUND Since exchange blood transfusion (EBT) is associated with serious complications, phototherapy has been made more powerful to reduce the need for EBT in the developed world. This study was undertaken to determine the indications for EBT in neonatal jaundice (NNJ) at our unit and what proportion of EBTs was possibly avoidable. METHODS All the babies who had EBT for hyperbilirubinemia...