This paper reports on one teacher’s attempts to teach critical algebra understandings to a Year 9 class in ways that engage the students and help them to develop positive perceptions of their ability to learn algebra in a “rigorous and symbolic way”. This paper describes a 6week algebra intervention based upon connecting concrete representations with symbolic expressions and equations through t...

buprenorphine (subutex) has been used to treat opioid dependency in the past 16 years. subutex (or buprenorphine hydrochloride) was approved by the singapore's ministry of health (moh) in 2000 as a substitution treatment for opiate-dependent drug abusers within the framework of medical, social and psychological treatments. it was subsequently introduced into the singapore market in 2002. i...

abstract background: many women, throughout their life cycle, experience unintended pregnancy and its subsequent induced abortion. nonetheless, women’s perceptions of this phenomenon – particularly in countries prohibiting elective abortion – are poorly known. the aim of this study was to explore iranian azeri women’s perceptions of unintended pregnancy. materials and methods: this was a conven...

Though DAML-S is growing into a de facto standard for semantic webservice markup, we have only found few complete service descriptions and even less papers discussing technical issues about the markup process. We addressed this lack by (1) reporting on our experiences in describing a set of services, (2) concluding several limitations of the latest DAML-S version (v0.7) and (3) making our work ...

Research shows that grocery stores reduce prices to compete with Walmart Supercenters. This study finds evidence that the competitive effects of two other big box retailers – Costco and Walmart-owned Sam's Club – are quite different. Using city-level panel grocery price data matched with a unique data set on Walmart and warehouse club locations, we find that Costco entry is associated with high...