BACKGROUND:Global health research is essential for development. A major issue is the inequitable distribution of research efforts and funds directed towards populations suffering the world's greatest health problems. This imbalance is fostering major attempts at redirecting research to the health…

Since its discovery shortly after the International Geophysical Year, the terrestrial magnetosphere has been under intensive study with satellites and ground-based instrumentation. We have a fairly good picture of its main structural features and the dynamic behavior of its multiple…

References on historical and recent earthquakes in Oaxaca City, or that have caused in other localities of the Oaxaca state from 1542 until 1988, are reviewed. Macroseismic data are used to define sets of similar earthquakes. On the basis of…

The paper investigates the pricing of derivative securities with calendar-time maturities.

We show how to recover Euler's formula for $\zeta(2n)$, as well as $L_{\chi_4}(2n+1)$, for any integer $n$, from the knowledge of the density of the product $\mathbb{C}_1,\mathbb{C}_2\ldots,\mathbb{C}_k$, for any $k\geq 1$, where the $\mathbb{C}_i$'s are independent standard Cauchy variables.

Some probabilistic aspects of the number variance statistic are investigated. Infinite systems of independent Brownian motions and symmetric alpha-stable processes are used to construct explicit new examples of processes which exhibit both divergent and saturating number variance behaviour. We derive…

In the presence of moral hazard, received agency theory predicts the Marshallian inefficiency of agricultural tenancy contracts, meaning that inputs per hectare on sharecropped land will differ from that on owned land. in this paper, we test for the presence…

In this article we study the effect of uncertainty on an entrepreneur who must choose the capacity of his business before knowing the demand for his product. The unit profit of operation is known with certainty but there is no…

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