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Historical and recent challenges to the practice of comparative forensic examination have created a driving force for the formation of objective methods for toolmark identification. In this study , fifty sequentially manufactured chisels were used to create impression toolmarks in lead (500 toolmarks total). An algorithm previously used to statistically separate known matching and nonmatching striated screwdriver marks and quasi-striated plier marks was used to evaluate the chisel marks. Impression toolmarks, a more complex form of toolmark, pose a more difficult test for the algorithm that was originally designed for striated toolmarks. Results show in this instance that the algorithm can separate matching and nonmatching impression marks, providing further validation of the assumption that toolmarks are identifiably unique. 相似文献
984.
Do legal elites—lawyers admitted to federal appellate bars—perceive the Supreme Court as a “political” institution? Legal elites differentiate themselves from the mass public in the amount and sources of information about the Court. They also hold near‐universal perceptions of Court legitimacy, a result we use to derive competing theoretical expectations regarding the impact of ideological disagreement on various Court perceptions. Survey data show that many legal elites perceive the Court as political in its decision making, while a minority perceive the Court as activist and influenced by external political forces. Ideological disagreement with the Court's outputs significantly elevates political perceptions of decision making, while it exhibits a null and moderate impact on perceptions of activism and external political influence, respectively. To justify negative affect derived from ideological disagreement, elites highlight the political aspects of the Court's decision making rather than engage in “global delegitimization” of the institution itself. 相似文献
985.
Patricia E. J. Wiltshire D.Sc. David L. Hawksworth D.Sc. Kevin J. Edwards D.Sc. 《Journal of forensic sciences》2015,60(6):1441-1450
A rapid method for evaluating suspect testimony is valuable at any stage in an inquiry and can result in a change of direction in an investigation. Rape cases, in particular, can present problems where a defendant renders DNA analysis redundant by claiming that the claimant consented to have sexual relations. Forensic palynology is valuable in confirming or eliminating locations as being crime scenes, thus checking the testimony of both parties. In contrast to some forensic disciplines, forensic palynology can provide critical information without time-consuming full analysis. Two cases are described where the palynological assemblages from comparator samples of pertinent places were compared with those obtained from clothing of claimants and defendants. The results of rapid microscopical scanning of relevant preparations led to early confessions, thus obviating the need for costly analyses and protracted court proceedings. A third case demonstrates the unbiased nature of this technique where a man, although innocent of any offense, lied about having visited the crime scene for fear of prosecution. This highlights the need for sensitive policing in claims of rape. 相似文献
986.
Homicide–suicide represents a single episode of violence which may decimate an entire family. This study aimed to further describe motives and context of these tragedies. Psychological autopsies were completed for 18 homicide–suicide cases in Dallas, Texas. This included postevent interviews with surviving family members and review of police and coroner records. Two‐thirds of perpetrators had made either verbal or written threats prior to the homicide–suicide. A simplified typology describing victim–perpetrator relationship and motive type is suggested for future studies and clinical ease. Two‐thirds of perpetrators fell into the category of Intimate‐Possessive, most of whom were depressed men who were abusing substances and undergoing separation. Additional categories included Intimate‐Ailing, Filial‐Revenge, Familial‐Psychotic, and Friend‐Psychotic. Further, implications from this psychological autopsy study regarding risk assessment include use of collateral interviews regarding threats and past violence. 相似文献
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This article analyzes congressional activism during an international crisis. Using the 1994 Rwandan genocide as a case, this study explores executive–congressional relations during a time when immediate policy responses are needed. A content analysis of policy statements made during committees, on the House floor, and on the Senate floor is used to investigate the specific policy ideas proposed by members of Congress. The models presented pay particular attention to the actions of Congressional Black Caucus (CBC) members, in relation to other more common predictors of congressional activism. In addition to the results for CBC members, other conclusions indicate that foreign policy leaders in Congress are international affairs policy experts without serious concerns of being defeated in their next election. 相似文献