Perinatal interventions and survival in resource-poor settings: which work, which don't, which have the jury out?
نویسندگان
چکیده
منابع مشابه
On Ideals Which Have the Weakly Insertion of Factors Property
A one-sided ideal of a ring has the insertion of factors property (or simply, IFP) if implies r for . We say a one-sided ideal of has the weakly IFP if for each , implies , for some non-negative integer . We give some examples of ideals which have the weakly IFP but have not the IFP. Connections between ideals of which have the IFP and related ideals of some ring extensions a...
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If a linear block code C of length n has a Tanner graph without cycles, then maximum-likelihood soft-decision decoding of C can be achieved in time O(n 2). However, we show that cycle-free Tanner graphs cannot support good codes. Specically, let C be an (n;k;d) linear code of rate R = k=n that can be represented by a Tanner graph without cycles. We prove that if R 0:5 then d 2, while if R < 0:5...
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ژورنال
عنوان ژورنال: Archives of Disease in Childhood
سال: 2010
ISSN: 0003-9888,1468-2044
DOI: 10.1136/adc.2009.179366