Loop-Induced Stochastic Bias at Small Wavevectors

Primordial non-Gaussianities enhanced at small wavevectors can induce a power spectrum of the galaxy overdensity that differs greatly from that of the matter overdensity at large length scales. In previous work, it was shown that "squeezed" three-point and "collapsed" four-point functions of the curvature perturbation $\zeta$ can generate these non-Gaussianities and give rise to so-called scale-dependent and stochastic bias in the galaxy overdensity power spectrum. We explore a third way to generate non-Gaussianities enhanced at small wavevectors: the infrared behavior of quantum loop contributions to the four-point correlations of $\zeta$. We show that these loop effects lead to stochastic bias, which can be observable in the context of quasi-single field inflation.Comment: 10 pages, 4 figure

Maternal nutrition: how is Eastern and Southern Africa faring and what needs to be done?

Background: The progress in key maternal health indicators in the Eastern and Southern Africa Region (ESAR) over the past two decades has been slow.Objective: This paper analyzed available information on nutrition programs and nutrition-specific interventions targeting maternal nutrition in the ESAR and proposes steps to improve maternal nutrition in this region.Methods: Search was conducted in relevant databases. Meta-analysis was done where there was sufficient data, while data from the nutrition programs was abstracted for objectives, settings, beneficiaries, stakeholders, impact of interventions and barriers encountered during implementation.Results: Findings from our review suggest that multiple nutrition programs are in place in the ESAR; including programs that directly address nutrition indicators and those that integrate corresponding sectors like agriculture, health, education, and water and sanitation. However, their scale and depth differ considerably. These programs have been implemented by a diverse range of players including respective government ministries, international agencies, non government organisations and the private sector in the region. Most of these programs are clustered in a few countries like Kenya, Uganda and Ethiopia while others e.g. Comoros, Somalia and Swaziland have only had a limited number of initiatives.Conclusion: These programs have been associated with some improvements in overall maternal health and nutritional indicators; however these are insufficient to significantly contribute to the progress in the region. Efforts should be prioritized in countries with the greatest burden of maternal undernutrition and associated risk factors with a focus on existing promising interventions to improve maternal nutrition.Keywords: Maternal nutrition, Eastern and Southern Africa, undernutritio

Stochastic Bias from Loops of Massive Particles During Inflation

Primordial non-Gaussianities enhanced at small wavevectors can induce a power spectrum of the galaxy overdensity that differs greatly from that of the matter overdensity at large length scales. In previous work, it was shown that “squeezed" three-point and “collapsed" four-point functions of the curvature perturbation ζ can generate these non-Gaussianities and give rise to so-called scale-dependent and stochastic bias in the galaxy overdensity power spectrum. We explore a third way to generate non-Gaussianities enhanced at small wavevectors: the infrared behavior of quantum loop contributions to the four-point correlations of ζ. We show that these loop effects can give the largest contributions to the four-point function of ζ in the collapsed limit and be observable in the context of quasi-single field inflation

О неглавных идеалах в полурешетке степеней перечислимости

This paper is dedicated to the study of ideals in semi-lattice of the enumeration degrees.Эта статья посвящена изучению неглавных идеалов в полурешетке степеней перечислимости. Построены некоторые неглавные идеалы в верхней полурешетке

О неглавных идеалах в полурешетке степеней перечислимости

This paper is dedicated to the study of ideals in semi-lattice of the enumeration degrees.Эта статья посвящена изучению неглавных идеалов в полурешетке степеней перечислимости. Построены некоторые неглавные идеалы в верхней полурешетке. 

Common polymorphic variation in the genetically diverse African insulin gene and its association with size at birth.

The insulin variable number of tandem repeats (INS VNTR) has been variably associated with size at birth in non-African populations. Small size at birth is a major determinant of neonatal mortality, so the INS VNTR may influence survival. We tested the hypothesis, therefore, that genetic variation around the INS VNTR in a rural Gambian population, who experience seasonal variation in nutrition and subsequently birth weight, may be associated with foetal and early growth. Six polymorphisms flanking the INS VNTR were genotyped in over 2,500 people. Significant associations were detected between the maternally inherited SNP 27 (rs689) allele and birth length [effect size 17.5 (5.2-29.8) mm; P = 0.004; n = 361]. Significant associations were also found between the maternally inherited African-specific SNP 28 (rs5506) allele and post-natal weight gain [effect size 0.19 (0.05-0.32) z score points/year; P = 0.005; n = 728). These results suggest that in the Gambian population studied there are associations between polymorphic variation in the genetically diverse INS gene and foetal and early growth characteristics, which contribute to overall polygenic associations with these traits

Chronicles of Oklahoma

Notes and Documents, Chronicles of Oklahoma, Volume 36, Number 2, Summer 1958. It includes documents about the dedication of a bust of Robert Lee Williams, the OHS annual tour, the history of the Oklahoma Panhandle, the establishment of Boggy Depot State Park, the history of St. John's Mission in Prairie City, the history of Sivler City on the Chisholm Trail, a correction, and Oklahoma historical markers