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51.
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In homicidal stabbings using a serrated knife, stab wounds involving costal cartilage leave striations on the cut surface of the cartilage from the serration points on the blade edge. Class characteristics of the serrated blade can be determined from the striation marks, and individualizing characteristics may be seen also. The traditional method for recording the striation marks involves the pernickety technique of casting with dental impression material. We assessed the potential utility of micro-computed tomography scanning of the stab track as a technique for nondestructive recording of striation patterns and virtual casting of them. Stab tracks in porcine cartilage, produced with a coarsely serrated blade, were scanned with a bench-top micro-computed tomography scanner. The typical irregularly regular striation pattern could be demonstrated, and the images manipulated, using proprietary software to produce a virtual cast. Whether the technology will have sufficient resolution to image not only class characteristic tool marks but also the much finer individualizing tool marks remains to be evaluated, but the technology shows considerable promise. 相似文献
53.
This study was designed to establish the potential error rate associated with the generally accepted method of tool mark analysis of cut marks in costal cartilage. Three knives with different blade types were used to make experimental cut marks in costal cartilage of pigs. Each cut surface was cast, and each cast was examined by three analysts working independently. The presence of striations, regularity of striations, and presence of a primary and secondary striation pattern were recorded for each cast. The distance between each striation was measured. The results showed that striations were not consistently impressed on the cut surface by the blade's cutting edge. Also, blade type classification by the presence or absence of striations led to a 65% misclassification rate. Use of the classification tree and cross-validation methods and inclusion of the mean interstriation distance decreased the error rate to c. 50%. 相似文献
54.
Derrick J. Pounder 《Forensic science international》1984,24(1):95-98
A previously healthy 33-year-old Australian male died suddenly and unexpectedly 8 h after a typhoid-cholera vaccination. Such facalities are extreme rarities and the present case is the first in which postmortem measurement of serum immunoglobulins has been undertaken. The clinical course and necropsy findings suggest that death was the result of a slowly evolving systemic anaphylactic reaction which terminated in hypotension and righs heart failure. The deceased was probably atopic. The current recommendations for the vaccination of international travellers against typhoid and cholera are discussed. 相似文献
55.
Cotton EA Allsop RF Guest JL Frazier RR Koumi P Callow IP Seager A Sparkes RL 《Forensic science international》2000,112(2-3):151-161
The AMPFlSTR((R)) SGM Plus system is a commercially available STR multiplex produced by Applied Biosystems, a division of Perkin Elmer, Foster City, California, USA that supersedes SGM. The multiplex contains the six SGM loci, amelogenin and four additional loci. These additional loci are D3S1358, D19S433, D16S539 and D2S1338. Consequently, the match probability is significantly improved (conservatively quoted as 1 in 10(9) for reporting a full profile match). The system was subjected to validation. For example, ageing and degradation studies demonstrated semen stains to be the most stable evidence type, whereas buccal scrapes were the least stable. An apparent rise in the sensitivity increases the chance of obtaining successful results from the more difficult samples submitted for analysis. Two of the new loci (D3S1358 and D19S433) are low molecular weight (between 100 and 150 base pairs); this improved the success rates of the degraded samples where high molecular weight loci may drop out. Of 26 non-primates tested, four gave results that appeared as single peaks and were unlikely to cause interpretation problems. None of the 19 micro-organisms tested gave discernible results. Extensive casework and simulated casework studies demonstrated that SGM and SGM plus results were comparable. There was one example of a null allele (primer binding site mutation) recorded at the HUMFIBRA locus (in both systems). However, a concordance study of 1000 samples using both SGM and SGM plus did not demonstrate any differences in typing. 相似文献
56.
57.
Oliver CJ Watson DG Gannon TA Beech AR 《International journal of offender therapy and comparative criminology》2009,53(3):292-304
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
58.
Dave N. Khey Lonn L. Lanza-Kaduce Joseph F. Spillane Charles E. Frazier 《American Journal of Criminal Justice》2010,35(3):144-158
This study examines the effect of official processing and sanctioning on the academic and criminal careers of a sample of
college students from a large university in a southeastern college town. Using a series of OLS and logistic regression models,
the results indicated that offense frequency and severity are risk factors for dropping out/or being dismissed from college,
whereas membership in a sorority or fraternity is a protective factor. Additional analyses demonstrated that the severity
of punishment as well as the type of punishment (e.g., judicial affairs punishment, criminal justice system punishment) also
had a significant effect on future offending. Study limitations and policy implications are also discussed. 相似文献
59.
This article analyzes recent case law on the admissibility of rape trauma syndrome evidence. Because many rulings on the admissibility of this evidence have been based on judicial assumptions about human behavior, rather than on scientific evidence, we next describe psychological research relevant to concerns raised about its scientific reliability, helpfulness, and prejudicial impact. Following this review, we evaluate both the expert testimony provided and the judicial decisions in recent cases in light of current research. Finally, we provide suggestions for future psychological research that could 1 inform discussions of the admissiblity of rape trauma syndrome evidence. 相似文献
60.
A 56-year-old woman died suddenly and unexpectedly of a cardiac tamponade due to spontaneous rupture of the right ventricle. The cardiac rupture occurred on the basis of clinically unsuspected cardiac sarcoidosis. Sudden death due to spontaneous rupture of a cardiac chamber is a previously unreported complication of sarcoidosis. 相似文献