The Accuracy and Applicability of 3D Modeling and Printing Blunt Force Cranial Injuries

The purpose of this study was to determine the factors affecting the accuracy of 3D models and 3D prints of cranial blunt force trauma, to evaluate the applicability and limitations of modeling such injuries. Three types of cranial blunt force lesions were documented (hinge, depressed, and comminuted) using three forms of surface scanning (laser, structured light scanner, and photogrammetry) at two different quality settings (standard and high). 3D printed models of the lesions were produced using two different materials (a gypsum‐like composite powder called VisiJet^® PXL and an acrylic engineered composite plastic called VisiJet^® M3 in crystal colour). The results of these analyzes indicate the prints in this study exhibit some statistically significant differences from the actual bone lesions, but details of the lesions can be reproduced to within 2 mm accuracy.     

Is the Public Willing to Help the Nigerian Police During the Boko Haram Crisis? A Look at Moderating Factors

This paper sought the opinion of 200 Nigerians on their willingness to cooperate with the police during the Boko Haram crisis. Public perceptions of police effectiveness during the crisis, residence location, gender and religious affiliation were used as moderators. Data was analysed using an explanatory factor analysis and structural equation modelling. Results indicated a strong association between perceived effectiveness and willingness to report to the police with respondents who question the effectiveness of the police being less likely to be willing to report criminal activity about Boko Haram. Further to this, the impact of religion on willingness to report was at least partially mediated by perceived effectiveness of the police with the results showing that Christian respondents perceived the police as less effective. Females and those living in the north were significantly less willing to report criminal activity to the police. The findings are discussed in relation to the BH crises and directions for future research are given.     

The Effects of Soil Environment on Postmortem Interval: A Macroscopic Analysis

Abstract:  Burial environment, in particular soil moisture, has a significant impact on the type, rate, and extent of bone degradation, which ultimately affects estimations of the postmortem interval (PMI). The purpose of this research is to determine the effects of soil moisture on the color, weight, condition, and texture of bone as it relates to the PMI. Bone changes occurring over two different time intervals (2 and 5 months) were examined using 120 sus scrofa leg bones. During each time interval bones were buried in two soil environments, one of which was drier than the other. The bones in both environments lost weight over time but the net weight loss was greater for bones in the higher moisture environment. There was no change in color, texture, or overall condition, indicating that 150 days is not long enough for such alterations to occur, regardless of the moisture level of the burial environment.     

Reconstructing the Sequence of Events Surrounding Body Disposition Based on Color Staining of Bone*

Abstract: Literature regarding bone color is limited to determining location of primary and secondary dispositions. This research is the first to use bone color to interpret the sequence of events surrounding body disposition. Two scenarios were compared—bones buried and then exposed on the ground surface and bones exposed then buried. Forty juvenile pig humeri with minimal tissue were used in each scenario with an additional 20 controls to determine if decomposing tissue affects bone color. Munsell Color Charts were used to record bone color of surface and 2.5 cm cross‐sections. Results reveal five main surface colors attributed to soil, sun, hemolysis, decomposition, and fungi. Fungi on buried bones suggests prior surface exposure. Cross‐sections of strictly buried bones are identical to buried then exposed bone, stressing the importance of bone surface analysis. Cross‐sectioning may help verify remains have been exposed then buried. Decomposition of excess tissue creates minimal color staining.     

Book reviews

B.J.C. McKercher, Transition of Power: Britain's Loss of Global Pre-eminence to the United States, 1930-45, Cambridge University Press, Cambridge, 1999, xii + 403, £40, ISBN 0521 440 904

Joseph A. Maiolo, The Royal Navy and Nazi Germany, 1933-39: A Study in Appeasement and the Origins of the Second World War (London, MacMillan Press Ltd., 1998), xii + 259 pp. £?? ISBN 0-333-72007-5.

William I. Hitchcock, France Restored: Cold War Diplomacy and the Quest for Leadership in Europe, 1944-54, University of North Carolina Press, Chapel Hill, 1998, pp.291. £37.50 hardback, £14.50 paperback.

R. Holland, Britain and the Revolt in Cyprus 1954-1959 (Oxford, Oxford University Press, 1998). 347 pp. £48 hb. ISBN 0-19-820538-4.

Michael L. Krenn, Black Diplomacy: African Americans and the State Department 1945-1969 (London: M.E. Sharpe, 1999). Viii + 223pp. £15.95 pb. ISBN 0-7656-0381-0

Jerrold L. Schecter, Russian Negotiating Behavior (Washington, DC: United States Institute of Peace Press, 1998). 225 pp. ISBN: 1-878379-78-X.     

The Mistreatment of Others: Discrimination Can Undermine University Identification,Student Health,and Engagement

Past research documents the extent that discrimination experiences and observations can undermine people’s health and performance. In addition to discrimination’s direct consequence for targets, discrimination implicates the morality of the larger community where it occurs. Perceptions of community morality could predict community identification that, in turn, could predict health and performance. To test this serial mediation hypothesis, 615 second- and third-year university undergraduates reported the frequency of discrimination observations and experiences. Students’ perceptions of the university community’s morality mediated the relationship between discrimination and the extent that they identified with the university. In turn, university identification mediated the relationship between university morality and students’ academic engagement and mental health. However, only university morality reliably mediated the relationship between discrimination and physical health. Discrimination can affect the health and engagement of all community members, even observers who are not part of the targeted group.