Implantation of an RFID-tag into human molars to reduce hard forensic identification labor. Part 2: physical properties

Modifying and implanting existing RFID-tags into extracted human molars was described previously [P. Thevissen, G. Poelman, B. Puers, M. De Cooman, G. Willems, Implantation of RFID-tag into human molars to reduce hard forensic identification labor. Part 1. Working principle, Forensic Sci. Int. 156 (2006)]. Maximal vertical occlusal load during which the implanted RFID-tags remain active was evaluated in vitro. The temperature dependency of the implanted RFID-tags was studied on the extracted teeth to find out the maximal obtainable temperature before failure and a test with embedded thermistors to verify temperature distributions. The maximal working temperature of the implanted RFID-tags was revealed and gave indications for the set-up of measuring intra oral and intra tooth temperature during the cremation of a human body. Fatigue was induced on the implanted teeth by thermocycling. The results of this investigation showed the need of putting an extra insulating layer around the modified tags before implantation. The different in vitro tests indicated that the implanted RFID-tags can support certain oral and forensic circumstances.     

Exploring Some Analytical Characteristics of Finite Mixture Models

Finite mixture models have become increasingly prevalent in criminology over the past two decades. Yet there is no consensus about the appropriate criterion for model selection with finite mixture specifications. In this paper, we use simulation evidence to examine model selection criteria. Our focus is on mixture models for event count data like those often encountered in criminology. We use two indices to measure model selection performance. First, we examine how often each criterion chooses the correct specification. Then, we investigate how closely the finite mixture models selected by these criteria approximate the true mixing distribution used to simulate the event count data. We consider three sets of simulations. In the first set, the underlying model is itself a three component Poisson-based finite mixture model. In the two other sets of simulations, the underlying distribution of the Poisson rate parameter follows a continuous distribution. The analysis shows that both AIC and BIC perform well under certain sets of circumstances likely to be encountered by criminologists.

Predictors of Early Engagement in Home Visitation

Predictors of engagement in mothers receiving home visitation in the first year of service was examined. Early engagement was studied in three ways: (1) length of time active in the program during the first year of service (duration), (2) number of visits received (quantity), and (3) gaps in service between visits (consistency). Examined visits received in 515 first-time mothers in a Healthy Families America (HFA) program. Parameters of engagement were investigated, and predictors of engagement were identified using demographics and the Kempe Family Stress Inventory. Inclusive of the Assessment Visit, 31.8% of mothers disengaged prior to the first month of service. Remaining active in the program was associated with being Caucasian, and increased parenting risk (mental health/substance abuse history, low social support, increased stress). Most mothers had fewer home visits than prescribed. Gaps in prescribed service were common, with 89.4% of mothers experiencing gaps between visits of 1 month, and dropping to 16.4% having gaps of 2 months. In contrast to findings from clinic-based interventions, early engagement in home visitation is associated with lower levels of functioning and acute needs. These findings add to a growing body of literature suggesting that increased adversity promotes engagement in prevention programs in general, and home visitation programs in particular. To the extent that mothers who are actively engaged in home visitation are likely to have increased psychosocial needs, curricula may require modification and augmentation to address these needs and optimize program effectiveness.     

The relationship between trauma and violence in a jail inmate sample

Research suggests there is a link between trauma and violence, although the nature of the relationship is rather equivocal. This study explored this relationship by examining self-reported trauma as a predictor of self-reported violence in 93 jail inmates. Ninety-six percent of the sample reported experiencing a traumatic event, and 67% reported having been violent during the year preceding incarceration. Inmates reporting trauma were more than twice as likely to report having been violent than nonviolent. Stepwise multiple regression analyses suggested traumatic events, as a combined model, significantly contributed to violence perpetration. In addition, witnessing serious violence predicted perpetration of violence. Implications and limitations of the present study are discussed.     

Battered women who kill their abusers: an examination of commonsense notions, cognitions, and judgments

It has been argued that battered women who kill their abusers represent a special class of defendants being unfairly treated in the legal system. As a result, commentators have argued for reforms to permit the judicial system to respond more fairly. Researchers have investigated the influences of these prescribed legal modifications and the possible influence of various demographic and psychological factors on legal reforms. However, social scientists have not yet asked some fundamental, psychological questions. Is the law consistent with what society believes is right and just? Is there a commonsense notion of justice in these cases? What factors constitute cognitive decision rules and influence judgments in cases of battered women who kill their abusers? This study uses a basic, psychological method to identify psychological factors that are important in judgments regarding battered women who kill and to better understand commonsense notions of justice in these cases.     

Rulemaking Amidst Growing Diversity: A Club-of-Clubs Approach to WTO Reform and New Issue Selection

The diverse nature of World Trade Organization (WTO) membershipmakes it highly unlikely that members will all be willing andable to sign on to the full range of agreements that many membersmight find desirable. The paper proposes an approach in whichthe WTO would supplement its core agreements with additional‘clubs’ to which only some members would subscribe.The approach is a compromise in which diversity can co-existwith a more extensive set of commitments for willing members.The paper provides suggestions for how the clubs would be selectedand how they would operate. Clubs would be chosen where theycould help promote the WTO’s central missions: loweringbarriers to trade, reducing the discriminatory effects of domesticpolicies, and enhancing economic development through trade.All WTO members would participate in negotiating club rules,but members would be free not to join. Clubs would use the DisputeSettlement Understanding (DSU) to deal with disputes, but suspensionof concessions in the event of violations would be confinedto the provisions of the same club in which the violation occurred.