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The Effect of Varying the Composition of Fingerprint Sweat Deposits on the Corrosion of Brass and Fingerprint Visibility
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Alice Cooper‐Dunn M.Sc. Owen Jones John W. Bond O.B.E. D.Phil. 《Journal of forensic sciences》2017,62(5):1314-1319
Corrosion of α‐phase brass by sebaceous sweat fingerprint deposits produced identifiable impressions in a majority of samples (n = 40) 4 days after deposition. Combining sebaceous with eccrine sweat yielded a greater percentage of identifiable fingerprint deposits, although this increase was not statistically significant. Production of identifiable fingerprints from eccrine sweat deposits was dependent on the sampling time of year with deposits taken during summer months giving similar percentages of identifiable fingerprints to sebaceous deposits. A statistically significant positive correlation was found between elapsed days after deposition and identifiable eccrine (ρ = 0.787, p < 0.05), sebaceous (ρ = 0.724, p < 0.05), and eccrine/sebaceous mixture (ρ = 0.908, p < 0.01) fingerprints deposited during summer months. The summer increase in the percentage of identifiable eccrine sweat deposits was statistically significant compared to winter eccrine deposits (p < 0.0001). Observations were consistent with results obtained from artificial sebaceous and eccrine sweat. 相似文献
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Comparison Among Manual Facial Approximations Conducted by Two Methodological Approaches of Face Prediction
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Lara Maria Herrera M.Sc. Raíssa Ananda Paim Strapasson M.Sc. Alice Aquino Zanin D.D.S. Jorge Vicente Lopes da Silva Ph.D. Rodolfo Francisco Haltenhoff Melani Ph.D. 《Journal of forensic sciences》2017,62(5):1279-1285
This study verified the difference between two methods of forensic facial approximation (FFA) regarding recognition and resemblance rates. Three‐dimensional models of skulls were obtained from computerized tomography (CT) scans of two subjects (targets). Two manual FFAs were performed for each target, by applying two different guidelines for the facial structures (what we called “American method” (AM) and “Combined method” (CM)). Unfamiliar assessors evaluated the sculptures by recognition and resemblance tests. The AM was that which allowed more correct responses of recognition and higher resemblance's scores for the male target (p < 0.001). Regarding guidelines for modeling characteristics of the face, the ones that are practical and easily performed for sculptures, such as the length of the anterior nasal spine multiplied by 3 for nose prediction, may offer better results in terms of resemblance. 相似文献
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Comparing Experimental and Matching Methods Using a Large-Scale Voter Mobilization Experiment 总被引:1,自引:0,他引:1
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