STUDY QUESTION Is the risk of stillbirth and perinatal deaths increased after assisted reproductive technology (ART) compared with pregnancies established by spontaneous conception (SC)? SUMMARY ANSWER A significantly increased risk of stillbirth in ART singletons was only observed before 28 + 0 gestational weeks. WHAT IS KNOWN ALREADY The current literature indicates that children born aft...

We discuss the relation between singletons in AdS 3 and logarithmic operators in the CFT on the boundary. In 2 dimensions there can be more logarithmic operators apart from those which correspond to singletons in AdS, because logarithmic operators can occur when the dimensions of primary fields differ by an integer instead of being equal. These operators may be needed to account for the greybod...

In this paper we prove that a recent Bayesian approximation of belief functions, the relative belief of singletons, meets a number of properties with respect to Dempster’s rule of combination which mirrors those satisfied by the relative plausibility of singletons. In particular, its operator commutes with Dempster’s sum of plausibility functions, while perfectly representing a plausibility fun...

This paper presents results of a simultaneous acoustic and articulatory investigation of word-medial and word-final geminate/singleton coronal stop contrasts in Moroccan Arabic (MA). The acoustic analysis revealed that, only for the wordmedial contrast, the two MA speakers adopted comparable strategies in contrasting geminates with singletons, mainly by significantly lengthening closure duratio...

The presence of a unique yet irrelevant singleton in visual search or spatial-cuing tasks is typically associated with performance costs, suggesting that singletons tend to capture attention. However, since singletons have always been spatially separated from targets in previous experiments, it remains unclear whether an irrelevant visual singleton that occurs at the same spatial location as th...

OBJECTIVE To estimate the maternal puerperal morbidity in elective and emergent cesareans in twins. STUDY DESIGN We evaluated postpartum complications among patients who underwent elective cesarean birth for twin pregnancy. This group was compared to matched singletons and to emergent cesareans in twins. RESULTS During the period September 1994-March 2006 there were 299 (47.4%) elective and...

In neonates, quantitative ultrasound has been shown to be predictive of bone breakability and an index of biophysical property of bone. There are no data on bone speed of sound (SOS) in appropriate for gestational age (AGA) twins. The purpose of this study was to test the hypothesis that AGA twins who had normal intrauterine growth have bone SOS similar to that of AGA singletons. We measured ti...

We introduce and study fuzzy hypervector spaces based on fuzzy singletons. In this regard by considering the notion of fuzzy singletons, we characterize a fuzzy hypervector space fuzzily spanned by a fuzzy subset. Then we use these results to introduce the concept of fuzzy freeness of a fuzzy subset μ of a hypervector space V and finally we characterize it in terms of linear independence in the...

In this letter we prove that the relative belief of singletons, one of the possible Bayesian approximations of a belief function, commutes with respect to Dempster’s orthogonal sum, and meets a number of properties which are indeed the duals of those met by the relative plausibility of singletons. This highlights a classification of Bayesian approximations in two families, according to the oper...

The purpose of the present study was to evaluate the relative risk (RR) of multiple births for birth defects after assisted reproductive technology (ART) using Japanese nationwide data from 2004 to 2008 with singletons as the reference group. In multiples compared to singletons, the percentage of birth defects per pregnancy were significantly higher (RR = 1.88, 95% confidence interval (CI) 1.60...