Parental Incarceration and Child Wellbeing: Implications for Urban Families

Using a population-based, longitudinal family survey (N=4,898), we identify a set of economic, residential, and developmental risks particular to the children of incarcerated parents. We use parental reports of incarceration history, demographic background, and a rich set of child and family outcomes, in a series of multivariate regression models. Children of incarerated parents face more economic and residential stability than their counterparts. Children of incarcerated fathers also display more behavior problems, though other developmental differences are insignificant. Several family differences are magnified when both parents have been incarcerated. We find that incarceration identifies families facing severe and unique hardship. Given the prevalence of incarceration, this means a large population of children suffers unmet material needs, residential instability, and behavior problems. These risks may be best addressed by using the point of incarceration as an opportunity for intervention, and the administration of age-appropriate social services.

Fast optical switch having reduced light loss

An electrically controlled optical switch uses an electro-optic crystal of the type having at least one set of fast and slow optical axes. The crystal exhibits electric field induced birefringence such that a plane of polarization oriented along a first direction of a light beam passing through the crystal may be switched to a plane of polarization oriented along a second direction. A beam splitting polarizer means is disposed at one end of the crystal and directs a light beam passing through the crystal whose plane of polarization is oriented along the first direction differently from a light beam having a plane of polarization oriented along the second direction. The electro-optic crystal may be chosen from the crystal classes 43m, 42m, and 23. In a preferred embodiment, the electro-optic crystal is a bismuth germanium oxide crystal or a bismuth silicon oxide crystal. In another embodiment of the invention, polarization control optics are provided which transmit substantially all of the incident light to the electro-optic crystal, substantially reducing the insertion loss of the switch

Lightning Occurrence and Social Vulnerability

The occurrence of lightning in time and space around the world is well known. Lightning fatalities and injuries are well delineated in the United States; however, there is much less information about lightning impacts on people in the developing world. It is estimated that between 6000 and 24,000 people are killed globally per year, and 10 times as many are injured. The fatality rate per capita has become very low in the developed countries during the past century due to the availability of lightning-safe structures and vehicles, less labor-intensive agriculture, and other factors, but this reduction has not occurred where people continue to work and live in lightning-unsafe situations. Lightning safety advice often mistakenly expects that the direct strike is most common, but ground current, direct contact, side flash, and upward streamers are much more frequent mechanisms. In developed countries, the injury:death ratio is approximately 10:1, meaning that 90% survive but may have permanent disabling injuries. The proximate cause of death is cardiac arrest and anoxic brain injury at the time of the lightning strike, and, at this time, the damage from a lightning strike cannot be reversed or decreased in survivors. Lightning vulnerability in many developing countries continues to be a major issue due to widespread exposure during labor-intensive agriculture during the day when thunderstorms are the most frequent and while occupying lightning-unsafe dwellings at night

A Grounded Theory of Inductive Qualitative Research Education: Results of a Meta-Data-Analysis

This paper reports on the first stage of a meta-study conducted by the authors on primary research published during the last thirty years that focused on discovering the experiences of students learning qualitative research. The authors carried out a meta-analysis of the findings of students’ experiences learning qualitative research included in twenty-five published articles. Using constructivist grounded theory to analyze the experience of those seeking to learn qualitative research, including factors that appear to support or interfere with their learning experiences, the authors identified three key dimensions of qualitative research students’ learning experiences—affective, cognitive, and experiential. Based on this analysis, the authors developed a grounded theory of qualitative research education. This theory suggests that students’ learning experiences will be enhanced through the implementation of an inductive approach to qualitative research education that incorporates experiential learning early in the learning experience. This paper reports these findings, presents this grounded theory of inductive qualitative research education, and discusses the implications of the findings of this meta-analysis for those teaching and researching qualitative research

Beyond Absenteeism: Father Incarceration and its Effects on Children’s Development

High rates of incarceration among American men, coupled with high rates of fatherhood among men in prison, have motivated recent research on the effects of parental imprisonment on children’s development. We contribute to this literature using data from the Fragile Families and Child Wellbeing Study to examine the effects of paternal incarceration on developmental and school readiness outcomes for approximately 3,000 urban children. We estimate cross-sectional and longitudinal regression models that control not only for fathers’ basic demographic characteristics and a rich set of potential confounders, but also for several measures of pre-incarceration child development, and family fixed effects. We find that paternal incarceration is positively associated with children’s externalizing problems at age five. Results are mixed with respect to attention problems, and we find some evidence that children of incarcerated fathers experience less anxiety than their peers. The observed effects of incarceration on child behavioral problems are significantly stronger than the effects of other forms of father absence, suggesting that children with incarcerated fathers may require specialized support from caretakers, teachers, and social service providers.Fragile families, childbearing, nonmarital childbearing, fartherhood, fathers, incarceration

Enantioselective synthesis of non-proteinogenic 2-arylallyl-α-amino acids via Pd/In catalytic cascades

An efficient synthesis of both R- and S-enantiomers of 2-arylallyl-α-amino acids via a diastereoselective Pd/In mediated catalytic allylation of chiral N-sulfinyl-α-imino esters is described. The potential for further enhancement of molecular complexity and creating contiguous chiral centres by interfacing these processes with catalytic cyclisation–anion capture methodology is demonstrated

Mitigating the Hazard of Lightning Injury and Death across Africa

Lightning injuries, deaths, and the economic consequences of lightning damage to property and infrastructure continue to be a significant public health challenge and economic development issue in many tropical and subtropical areas of the world, especially sub-Saharan Africa. This chapter will discuss the scope of the hazard, known risk factors including common cultural beliefs that inhibit public education, existing data sources, medical effects and long-term disability, lightning formation and detection, injury mechanisms, existing lightning safety programs and their challenges, and the work being done to decrease injuries, death, and property damage from lightning in Africa by the African Centres for Lightning and Electromagnetics Network (ACLENet)