BACKGROUND Early childhood obesity disproportionately affects children of low socioeconomic status. Children attending Head Start are reported to have an obesity rate of 17.9%.This longitudinal study aimed to understand the relationship between cognitive stimulation at home and intake of junk food, physical activity and body size, for a nationally representative sample of 3- and 4-year old chil...

Junk food consumption is associated with rising obesity rates in the United States. While a "junk food" specific tax is a potential public health intervention, a majority of states already impose sales taxes on certain junk food and soft drinks. This study reviews the state sales tax variance for soft drinks and selected snack products sold through grocery stores and vending machines as of Janu...

This paper addresses the problem of performing supervised classification on document collections containing also junk documents. With ”junk documents” we mean documents that do not belong to the topic categories (classes) we are interested in. This type of documents can typically not be covered by the training set; nevertheless in many real world applications (e.g. classification of web or intr...

background: studies report inappropriate snack and junk food consumption patterns in children and young adults in iran. the current survey was aimed to explore fast food consumption behaviors in high-school students based on the theory of planned behavior. materials and methods: a cross-sectional study was done among 500 high-school students. samples were selected based on cluster sampling meth...

Childhood overweight and obesity have increased alarmingly in recent decades all over the world, particularly middle-income countries like Brazil, Mexico China. In response to epidemic, several states governments introduced restrictions on sales of high-calorie low-nutrient-dense foods beverages schools. However, most school canteens around world continue offer such unhealthy products. The lack...

sciencemag.org SCIENCE Paleoindian, and fishtail points previously provided a roadmap that archaeologists used to trace the spread of Paleoindians throughout the Americas. Such a roadmap is lacking for pre-Clovis sites. Assemblages with distinctive stemmed (“tanged”) chipped-stone projectile points, crescents (lunate-shaped), and leaf-shaped bifaces found in Japan, northeast Asia, western North...