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Stamp marks are used as a unique identification for a range of items, but these can be erased for criminal activities. Erased marks can sometimes be recovered by etching or magnetic means. The present study looked at the application of Fry's reagent to recover erased marks from steel. The investigation also demonstrated that Fry's reagent can deteriorate on storing and will require a longer etching time. The effect of different applied forces of stamping was investigated, and the depth of the underlying deformation was determined by etching after varying degrees of metal removal. The amount of metal needing to be removed depends on the force applied to the die. Metal removal also affects the time needed for recovery. The underlying structural change remains as a hidden identification mark, and could potentially be used by manufacturers as an unseen identifier. A model for the underlying deformation is proposed.  相似文献   
325.
The associations between intimate partner violence (IPV) and mental health among adolescent and young adult mothers were compared. The sample was drawn from the Fragile Families and Child Wellbeing Study and participants were 672 mothers between the ages of 14 and 21. IPV was significantly positively associated with both depression and anxiety among young adult mothers. However, these associations were not found among adolescent mothers. In addition, IPV and marital status were significantly related among young adult mothers, but not adolescent mothers. Results suggest that IPV may have different consequences during different parts of the life course, or that mental health symptoms may be reported only later in life.
Christina B. GeeEmail:
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326.
This article describes a study that used a computer-based task to investigate the emotional recognition skills of child sexual abusers. The experiment consisted of two phases (prime and probe) and measured both response time and error rates to facial expressions. The priming phase of the experiment consisted of the presentation of short phrases via computer of either sexual or neutral content. The probe phase of the experiment consisted of the presentation of adult facial expressions depicting either the emotion fear or surprise. Results showed child sexual abusers to be slightly less accurate overall. Furthermore, contrary to prediction, the effect of sexual priming appeared to make child sexual abusers actually better at recognizing fearful faces (p = .055). This result is discussed in relation to current victim empathy theory and treatment implications for sexual offenders.  相似文献   
327.
Abstract: An unexpected infant death is usually investigated with a complete autopsy. If evidence of prior trauma is found at autopsy in these cases, suspicion is raised for nonaccidental trauma. In a young infant, the residua of trauma received during birth has the potential to be incorrectly interpreted as nonaccidental trauma. We report a the findings of a 4 1/2‐month‐old‐infant that died unexpectedly with a healing linear skull fracture and a circular lesion over the calvarium found at autopsy. Though this lesion was concerning, the remainder of the autopsy and the histological findings did not support a diagnosis of recent trauma. Review of the literature describing birth injuries made the diagnosis of healing, residual birth trauma more convincing in this case.  相似文献   
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In a previous study, a survey‐based analysis of pathologist diagnoses of patterned injury in which participants were asked makes diagnoses from photographs in the absence of history or context. The level of consensus was low. A follow‐up survey was created to ask those who responded to the first survey why they answered as they did or why they were unsure of their answers. The most common reason for lack of consensus was that the lesion was nonspecific. Responses invoking ambiguity were more common than those that indicated a confident difference in diagnosis. There were differences between demographic groups, with age and experience being most prominent. These findings suggest that differences in image interpretation do not generally reflect firm differences in diagnosis as much as differing ways of dealing with ambiguity in the absence of history and context. A third survey will study the effect of the addition of contextual information.  相似文献   
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Book reviews     
John R. Davis, Britain and the German Zollverein, 1848-66 (London: Macmillan, 1997). x + 238 pp. £45. ISBN 0-333-67828-1.

Martin Thomas, Britain, France and Appeasement: Anglo-French Relations in the Popular Front Era (Oxford and New York: Berg. 1996). xi + 268 pp. £29.95 hb; £12.95 pb. ISBN 1-85973-192-9.

Peter Lowe, Containing the Cold War in East Asia: British Policies Towards Japan, China and Korea, 1948-53 (Manchester: Manchester University Press, 1997). xii + 288 pp. £40. ISBN 0-7190-2508-7.

David M. Barrett, Uncertain Warriors: Lyndon Johnson and His Vietnam Advisers (Lawrence, Kansas: University of Kansas Press, 1994). xii + 279 pp. £11.95 pb. ISBN 0-7006-0631-9.

Rhodri Jeffreys-Jones, Changing Differences: Women and the Shaping of American Foreign Policy, 1917-1994 (New Brunswick, NJ: Rutgers University Press, 1997). x + 275 pp. £14.50 pb. ISBN 0-8135-2449-0.

Philip M. Taylor, Global Communications, International Affairs and the Media Since 1945 (London & New York: Routledge, 1997). xx + 248 pp. £45 hb. ISBN 0-415-11678-3; £15.99 pb. ISBN 0-415-11679-1  相似文献   
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