Coping and adaptation by children with mild physical differences

This comparative study of 60 parents' and teachers' views of how elementary school children cope with their own mild physical differences and with current psychosocial development and academic tasks in mainstream classrooms identified statistically significant differences in use of defensive-adaptive imagery and psychosocial functioning between children experiencing academic success and failure.     

Moments of the sampled autocovariances and autocorrelations for a Gaussian white-noise process

Cumulants, moments about zero, and central moments are obtained for the mean-corrected serial covariances and serial correlations for series realizations of length n from a white-noise Gaussian process. All first and second moments (and some third, fourth, and higher moments) are given explicitly for the serial covariances; and the corresponding moments for the serial correlations are derived either explicitly or implicitly.     

Joint Initial Stocking and Transshipment—Asymptotics and Bounds

A common problem faced by many firms in their supply chains can be abstracted as follows. Periodically, or at the beginning of some selling season, the firm needs to distribute finished goods to a set of stocking locations, which, in turn, supply customer demands. Over the selling season, if and when there is a supply‐demand mismatch somewhere, a re‐distribution or transshipment will be needed. Hence, there are two decisions involved: the one‐time stocking decision at the beginning of the season and the supply/transshipment decision throughout the season. Applying a stochastic dynamic programming formulation to a two‐location model with compound Poisson demand processes, we identify the optimal supply/transshipment policy and show that the optimal initial stocking quantities can be obtained via maximizing a concave function whereas the contribution of transshipment is of order square‐root‐of T. Hence, in the context of high‐volume, fast‐moving products, the initial stocking quantity decision is a much more important contributor to the overall profit. The bounds also lead to a heuristic policy, which exhibits excellent performance in our numerical study; and we further prove both the bounds and the heuristic policy are asymptotically optimal when T approaches infinity. Extension to multiple locations is also discussed.     

Power of the First Hour

Abstract

In 2012, the NGO Save the Children launched its No Child Born to Die campaign with the tagline, “Breastfeeding Saves Lives.” The press release explains that in the first hours and days after a baby is born, their mother produces colostrum, a substance known to improve immunity, which must be delivered to infants in the first sixty minutes of life; this is referred to as “the power of the first hour.” Invoking a sense of urgency and a crisis of infant mortality, which breastfeeding is positioned to resolve, the campaign cites staggering medical statistics of infant deaths in the campaign targets of Africa, Asia and Latin America, and also Northern Indigenous and Inuit reserves in Canada. More than misrepresenting racialized women in the developed world as uneducated on infant health, childcare and child rearing and as lacking agency and empowerment, the campaign mobilizes the erroneous conflation of medical science, morality, capitalism and public health – a linkage typically mobilized by the development industry to the detriment of globally marginalized women. In order to understand how this conflation is mobilized to manufacture crisis at the expense of examining the root causes of infant mortality globally, we collect theories of crisis temporalities to develop a “feminist politics of crisis.”     

Xinjiang’s geographies in motion

Starting from the idea that places are socially constructed, this essay explores how a place is established and lived in Xinjiang by the members of the area’s two largest ethnicities, the Uyghur and the Han. This article demonstrates that there are differences in the ways Han and Uyghur imagine and ‘live’ Xinjiang.¹1. Xinjiang is not a very fortunate toponym to use here because it is a Han-language term (meaning ‘New Frontier’) that was imposed during the colonization of the region by the Qing Dynasty (1644–1911). However, since there is no other term that comprises both regions of Tarim Basin and Dzungaria and also eastern Xinjiang, I am compelled to use it. For a discussion of the complex question of toponym-usage in this region see Millward, Eurasian Crossroads.View all notes At the same time it asserts that Uyghur and Han do not establish distinct spatial relationships just because of their ethnicity, but also to enhance ethnic solidarity and boundaries vis-à-vis the other. This essay also demonstrates that places are historically contingent, and discusses the ways in which the influx of temporary Han migrants and settlers – and Han capital – has generated new layers of spatial meaning and new power differentials.     

Self‐conscious Shyness: Growth during Toddlerhood,Strong Role of Genetics,and No Prediction from Fearful Shyness

Fearful and self‐conscious subtypes of shyness have received little attention in the empirical literature. Study aims included the following: (1) determining whether fearful shyness predicted self‐conscious shyness, (2) describing development of self‐conscious shyness, and (3) examining genetic and environmental contributions to fearful and self‐conscious shyness. Observed self‐conscious shyness was examined at 19, 22, 25, and 28 months in same‐sex twins (MZ = 102, DZ = 111, missing zygosity = 3 pairs). Self‐conscious shyness increased across toddlerhood, but onset was earlier than predicted by theory. Fearful shyness (observed [6 and 12 months] and parents’ reports [12 and 22 months]) was not predictive of self‐conscious shyness. Independent genetic factors made strong contributions to parent‐reported (but not observed) fearful shyness (additive genetic influence = .69 and .72 at 12 and 22 months, respectively) and self‐conscious shyness (additive genetic influence = .90 for the growth model intercept). Results encourage future investigation of patterns of change and inter‐relations in shyness subtypes.     

Complex Interrelations of Trait Vulnerabilities in Mothers and their Infants

Despite the developmental and clinical relevance of this area of inquiry, no studies have examined the interrelations of trait vulnerabilities in the affective, behavioral, and interpersonal domains between mothers and their infants. Thus, this study examined the interrelations of three trait vulnerabilities (i.e., negative affective intensity, impulsivity, and insecure attachment) between mothers and their 12‐ to 23‐month‐old infants, focusing in particular on the unique and interactive influence of these maternal trait vulnerabilities on the expression of and precursors to these traits in their infants. Mother–infant dyads (N = 101) completed several laboratory procedures, and mothers reported on their own and their infants' expressions of the trait vulnerabilities of interest. Findings from this study provide preliminary evidence for intergenerational relations between these traits and suggest that it is the confluence of trait vulnerabilities in mothers that relates to the early expression of some of these traits in infants.