Onset of turbulence in a regular porous medium : An experimental study

Peer reviewedPublisher PD

Community-level characteristics of high infant mortality: A tool to identify at-risk communities

Infant mortality (IM) rate is a key indicator of population health and has been gradually improving in the United States. However, it is still a public health problem among minority and low-income communities. Maternal factors explain some of the variation, but community-level factors may also be a contributor. This study examines measures to identify a set of indicators that explain variations in IM at the community-level. Data for 77 communities in a city were obtained from local health databases. We used multivariable linear regression models to examine the strength of the association between IM and maternal, population, community wealth, and social capital characteristics. Community-level IM rates ranged from 2.1 – 25.6 deaths per 1,000 live births in 2000-2002. The final model explained 75% of the variation in IM rates at the community-level (R2=0.75). The model included a high percentage of low birth weight babies, a decline in mothers who began prenatal care in the second trimester, an increase in the percentage of Hispanics, increased unemployment rates, an increase in the percentage of veterans, an increased rate of foreign-born residents, and smaller average family sizes. Social capital variables, homicide rate and vacant housing, were also significant in the final model. Identifying communities at risk for high IM rates is imperative to improve maternal and child health outcomes because of shortages in public health resources. The development of a parsimonious set of community-level indicators can assist public health practitioners in targeting their resources to prevent infant mortality in high-risk communities

Synergies between processing and memory in children's reading span.

Previous research has established the relevance of working memory for cognitive development. Yet the factors responsible for shaping performance in the complex span tasks used to assess working memory capacity are not fully understood. We report a study of reading span in 7- to 11-year old children that addresses several contemporary theoretical issues. We demonstrate that both the timing and the accuracy of recall are affected by the presence or absence of a semantic connection between the processing requirement and the memoranda. Evidence that there can be synergies between processing and memory argues against the view that complex span simply measures the competition between these activities. We also demonstrate a consistent relationship between the rate of completing processing operations (sentence reading) and recall accuracy. At the same time, the shape and strength of this function varies with the task configuration. Taken together, these results demonstrate the potential for reconstructive influences to shape working memory performance among children

One Side By Himself: the Life and Times of Lewis Barney, 1808-1894

Review of: One Side by Himself: The Life and Times of Lewis Barney, 1808-1894. Barney, Ronald O

Childhood Obesity and Depression

Obesity is a commonly experienced health issue. Children who suffer from obesity may experience medical concerns such as type 2 diabetes and hypertension (American Obesity Association, 2006). Obese children may also face psychological consequences. An overweight child may experience criticism from peers while finding it difficult to participate in age-related activities. Considering this fact, one can understand why psychological effects of childhood obesity are of concern. The purpose of this study is to examine the links between obesity and childhood depression, rated by the Childhood Depression Inventory (CDI-2). Twenty-nine children were administered the CDI-2. Activity level and age of children was collected. Current weight and height was also collected. The results of this study indicated that there was no relationship between CDI-2 scores and weight. Furthermore, surprisingly there was no relationship between exercise, time spent watching TV/computer time verses CDI-2 scores. There was a relationship between weight and sports participation