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101.
The authors report two cases in which examination of foreign material embedded in or adherent to bullets provided critical information in the reconstruction of a crime scene. Analysis of small particles by scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDXA) can be accomplished without destruction or injury of the particles. In one case, the detection and identification of mineral fragments embedded near the nose of a bullet provided conclusive evidence that the bullet had ricocheted from a fireplace before striking the victim. In the second case, analysis of particles from two bullets identified them as them as bone fragments, thus proving which shots fired from a police officer's gun had killed a suspected burglar. SEM-EDXA has not been widely used to identify such material on bullets, but should be considered a potentially powerful tool in forensic science. 相似文献
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Dana B. Kamerud 《Journal of policy analysis and management》1988,7(2):341-352
The national 55 mile-per-hour speed limit was in effect from 1974 to 1987, and over the years many analysts have attempted to measure and compare its costs (enforcement and travel time) and benefits (safety and fuel economy). In 1984 a committee of the National Research Council completed a major study of the speed limit. The following article completes the committee's calculations; summarizes the results in units of money, lives, and travel time; and divides these effects between rural interstates and all other roads. Over a range of plausible dollar values for extra travel time, the cost of saving a life is estimated to be much higher on rural interstates than on other affected roads—and higher than the cost of saving a life by other highway safety measures as well. Hence, proponents of higher speed limits on the rural interstates have a strong case in the debate, which continues in the state legislatures. 相似文献
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Dana D. Dehart Robert J. Kennedy Leslie K. Burke Diane R. Follingstad 《Journal of family violence》1999,14(1):19-34
This study examines factors associated with the high attrition rate in treatment programs for men who batter. In accord with past research, we expected demographic variables of age, race, employment status, relationship status, and socioeconomic status to predict attrition. We also hypothesized that attitudinal and personality variables, as well as contextual/program variables, might account for attrition more parsimoniously. Specifically, we hypothesized that attrition would be predicted by frequency and severity of violence, denial of a problem with violence, rigidity of thinking, low levels of self-disclosure, and higher anxiety and constriction in social situations. In addition, we predicted attrition would relate to dependency, maladaptive personality styles, and expectations regarding group counseling (e.g., whether treatment is perceived as aversive). Finally, we proposed that attrition would relate to whether batterer participation in treatment was self-motivated or the result of external pressures. Participants were 61 men enrolled in a batterer treatment program in a mid-sized city. Analyses of variance and discriminant analyses indicated that program attrition was unrelated to demographic, attitudinal, or personality variables. Only the contextual/program variables of mileage traveled to attend and external monitoring of attendance significantly differentiated treatment rejecters, drop-outs, and treatment continuers. Findings are discussed with regard to intrinsic and extrinsic motivational factors. Future directions for exploration are discussed. 相似文献
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Derek A. Kreager Jacob T.N. Young Dana L. Haynie David R. Schaefer Martin Bouchard Kimberly M. Davidson 《犯罪学》2021,59(1):42-72
Applying an abductive mixed‐methods approach, we investigate the informal status systems in three women's prison units (across two prisons) and one men's prison unit. Qualitative analyses suggest “old head” narratives—where age, time in prison, sociability, and prison wisdom confer unit status—are prevalent across all four contexts. Perceptions of maternal “caregivers” and manipulative “bullies,” however, are found only in the three women's units. The qualitative findings inform formal network analyses by differentiating “positive,” “neutral,” and “negative” status nominations, with “negative” ties primarily absent from the men's unit. Within the women's units, network analyses find that high‐status women are likely to receive both positive and negative peer nominations, such that evaluations depend on who is doing the evaluating. Comparing the women's and men's networks, the correlates of positive and neutral ties are generally the same and center on covariates of age, getting along with others, race, and religion. Overall, the study points to important similarities and differences in status across the gendered prison contexts, while demonstrating how a sequential mixed‐methods design can illuminate both the meaning and the structure of prison informal organization. 相似文献
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This study involves an evaluation of an innovative approach to the handling of domestic violence (DV) cases in the city of Cleveland, Ohio that includes (1) a DV Project composed of specially trained police detectives, prosecutors and victim advocates for investigating and prosecuting domestic violence cases involving adult female victims who are married to, cohabitating with, or have a child with the defendant; and (2) a Dedicated Domestic Violence Docket that involves two Municipal Court judges hearing all of the domestic violence cases that are handled by the DV Project. We collected data on six months of domestic violence cases occurring in the latter half of 2008 (N?=?1388), by linking records from the Cleveland Police Department, the Prosecutor’s Office, and the Municipal Court. We found that very few victims in police districts lacking the DV Project follow up with a prosecutor to pursue the case further, indicting that specialized DV units in police departments can have a significant impact on the number of DV cases that move forward through the criminal justice system. DV Project cases were slightly less likely to result in charges issued by prosecutors (OR?=?.499) but more likely to result in dismissals (OR?=?2.545) and referrals to DV treatment programs (χ2?=?3.88). 相似文献
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Roger W. Byard M.D. Siobhan O'Donovan B.H.Sci. Corinna van den Huevel Ph.D. Matthew Baldock Ph.D. 《Journal of forensic sciences》2018,63(4):1307-1308
A certain number of single‐vehicle crashes into stationary roadside objects such as trees are thought to be occult suicides. However, is it possible that some cases of multiple deaths within a family in similar crashes are due to unrecognized familial murder‐suicides? A 39‐year‐old woman and her 11‐year‐old daughter are reported who died of injuries following a vehicle impact with a tree. Unusual behavior of the mother leading up to the crash, and assessment at the scene, raised the possibility of this being a nonaccidental event. However, difficulties in retrospectively determining the intent of a driver in a vehicle crash, and the nonrecording of, or lack of separate coding for murder‐suicides on registers, make determination of the incidence of these types of events extremely difficult. It may be that this is a subcategory of murder‐suicide that is underdiagnosed and so is not being registered on central motor vehicle crash databases. 相似文献