Mathematical Achievement in Eighth Grade: Interstate and Racial Differences

The 1992 eighth grade mathematics test of the National Assessment of Educational Progress reveals a low average level of achievement, wide variation across states, and a large difference in average scores of white and black students. Multiple regression analysis across states indicates that the characteristics of children (such as readiness to learn in kindergarten) and of the households in which they live (such as mother's education) have much larger effects of NAEP test scores than do variables (such as the student/teacher ratio) that measure school characteristics. White-black differences in the levels of child and household variables account for much of the white- black difference in NAEP test scores.

X-Reality and the Incarnation

This essay is one of six in a collection of theological reflections on social media and new media conducted by the New Media Research Fellows at Union Theological Seminary. They are based upon the case studies conducted by the research fellows in 2011. These and other resources can be found on the New Media Project website

Cooling water system, compressor plant no. 1 /

In the operation of the BRL Supersonic Wind Tunnels it is necessary to hold the air temperature at the entrance to the tunnels to a constant given level. This report describes the cooling system used to accomplish this and a few of the problems involved in its operation. (Author).See errata issued 18 July 1968 for pages 9, 17, 20, 61 and 68 at end of item."June 1970."In the operation of the BRL Supersonic Wind Tunnels it is necessary to hold the air temperature at the entrance to the tunnels to a constant given level. This report describes the cooling system used to accomplish this and a few of the problems involved in its operation. (Author).RDT &E Project No. :Mode of access: Internet