منابع مشابه
One-for-One Period Policy and its Optimal Solution
In this paper we introduce the optimal solution for a simple and yet practical inventory policy with the important characteristic which eliminates the uncertainty in demand for suppliers. In this new policy which is different from the classical inventory policies, the time interval between any two consecutive orders is fixed and the quantity of each order is one. Assuming the fixed ordering cos...
متن کاملOne-sided ejaculation of echidna sperm bundles.
We report for the first time an unusual ejaculatory mechanism in the short-beaked echidna in which each side of the bilaterally symmetrical, rosettelike glans penis is used alternately, with the other being shut down. This is unparalleled in mammals but is reminiscent of the use of hemipenes in squamate reptiles, providing further reproductive evidence of a sauropsidian lineage in the Monotrema...
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ژورنال
عنوان ژورنال: Asian Journal of Andrology
سال: 2009
ISSN: 1008-682X,1745-7262
DOI: 10.1038/aja.2009.72