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J Frieman

Publications and source records attributed to J Frieman.

6 recordsLinked to original sources
PubMed2000

Weak Gravitational Lensing by the Nearby Cluster Abell 3667.

We present two weak lensing reconstructions of the nearby (zcl=0.055) merging cluster Abell 3667, based on observations taken approximately 1 yr apart under different seeing conditions. This is the lowest redshift cluster with a weak lensing mass reconstruction to date. The reproducibility of features in the two mass maps demonstrates that weak lensing studies of low-redshift clusters are feasible. These data constitute the first results from an X-ray luminosity-selected weak lensing survey of 19 low-redshift (z<0.1) southern clusters.

Journal Article↗
PubMed1996

Alternative protocol.

Explore the source record for details and available documents.

Calcium Channel Blockers↗
PubMed1976

Comparison of three procedures in reducing self-injurious behavior.

In the present study the effects of withdrawal of food, withdrawal of attention, and the simultaneous withdrawal of food and attention on the rate of self-injurious behavior of three profoundly retarded girls during mealtime were investigated. The two treatments that prevented eating led to a marked reduction of self-injurious behavior. Application of the method allowing continuation of eating (withdrawal of attention) resulted in an increased rate of two subjects' self-injurious behavior and had little effect on the rate of self-injurious behavior of the third. An analysis of the data suggests that contingent interruption of meal consumption can reduce the behavior and that rates of self-injurious behavior vary as a result of reinforcement.

Adolescent↗