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Biomedical subjects

Ron Roberts

Publications and source records attributed to Ron Roberts.

3 recordsLinked to original sources
PubMed2006

An ultrasonic array sensor for spacecraft leak direction finding.

We have developed an ultrasonic array sensor useable for locating air leaks in manned spacecraft and have found that this sensor locates leaks in a 1-m(2) plate to within 2 cm. The sensor consists of a 63-element multiplexed array plus a reference element, all constructed from a single PZT disc and a printed circuit board. Cross-correlations of signals from the array elements with signals from the single reference element provide a measurement of the leak noise passing through the spacecraft skin under the array. A spatial Fourier transform reveals the dominant direction of propagation. Triangulation from multiple sensor locations can be used to find the source of the leak.

Equipment Design↗
PubMed2004

The effects of child sexual abuse in later family life; mental health, parenting and adjustment of offspring.

OBJECTIVE: To investigate links between child sexual abuse (occurring before 13 years), later mental health, family organization, parenting behaviors, and adjustment in offspring. METHOD: The present study investigates a subsample of the Avon Longitudinal Study of Parents and Children an ongoing study of women and their families in the area of Avon, England. A sample of 8292 families met inclusion criteria for identifiable family type and completed self-report data on prior sexual assault. Further data were collected on life course variables, socioeconomic variables, psychological well-being, relationship quality, parent-child relationship quality, and children's adjustment. RESULTS: After adjustment for other childhood adversity, prior child sexual abuse was associated with a range of outcomes in adulthood, including current membership of a nontraditional family type (single mother and stepfather) poorer psychological well-being, teenage pregnancy, parenting behaviors, and adjustment problems in the victim's later offspring. The relationship of child sexual abuse with aspects of the parent-child relationship in later life and with the offspring's adjustment difficulties were mediated in part by mother's mental health--chiefly anxiety. CONCLUSION: Findings indicate that child sexual abuse has long-term repercussions for adult mental health, parenting relationships, and child adjustment in the succeeding generation.

Adaptation, Psychological↗