Physical components of soft-tissue ballistic wounding and their involvement in the generation of blood backspatter*

Gunshot backspatter comprises biological material expelled backward through bullet entry holes. Crime scene investigators analyze backspatter patterns to infer wounding circumstances. An understanding of the mechanism of backspatter generation, and the relationship between spatter patterns and bullet and tissue characteristics, would enhance the predictive value of such analysis. We examined soft-tissue ballistic wounding responses to determine the underlying components and how these might be relevant to the generation of backspatter. We identified five mechanistic components to ballistic wounding (elastic, viscous, crushing, cutting, and thermal), each related to mechanical disciplines (respectively, solid mechanics, fluid mechanics, fracture mechanics, rheology, and thermodynamics). We identified potential roles for these five components in backspatter formation and provide a scenario whereby a sequence of events incorporating these components could lead to backspatter generation and expulsion. This research provides a framework for the mathematical representation, and subsequent computational predictive modeling, of backspatter generation and pattern formation.     

Border carbon adjustments, WTO-law and the principle of common but differentiated responsibilities

This paper considers unilateral border measures, as contemplated by a number of developed states in conjunction with domestic emissions reduction schemes, as they relate to international trade and international environmental law. Specifically, I argue that to the extent that WTO-compliance requires strict adherence to the principle of nondiscrimination, as embodied in the national treatment and most-favored nation provisions in the General Agreement on Trade and Tariffs, there is the potential for conflict with the principle of common but differentiated responsibilities (CBDR), both as a free-standing principle of customary international law and as set out in various multilateral environmental agreements and, in particular in the climate change context, the United Nations Framework Convention on Climate Change and the Kyoto Protocol. This is insofar as the unilateral imposition of BCAs by developed countries shifts costs of compliance with environmental legislation in developed economies onto the developing world. Such allocation may conflict with the principle of CBDR, which recognizes the unequal contribution to environmental degradation of developed countries as well as their enhanced ability to address the challenges presented by such degradation and, as a consequence, requires that they undertake more onerous obligations with respect to climate change mitigation. The paper concludes with a discussion of the extent to which this conflict is illustrative of a deeper tension between efficiency and equity considerations inherent in the intersection of international economic law and international environmental law.     

The Hispanic Experience of the Child Welfare System

As the Hispanic population grows in the United States and the child welfare system, it is necessary to examine how experiences of Hispanic families differ from those of White/Caucasian families and to assess whether Hispanic families’ needs are properly addressed. This literature review will examine research on the outcomes and experiences of Hispanic families in the child welfare system and how case characteristics interact with the experiences of Hispanic families. This article will then explore theories for Hispanic families’ different experiences and conclude by recommending future directions and solutions for improving the experiences of Hispanic families in the child welfare system.     

Physician participation in Medicaid: background and issues

Most Americans gain entry into the medical care system through office-based primary care physicians. The Medicaid program was created in 1965 in part to increase the access of low-income people to medical services in that mainstream. But, over the years, office-based physicians have reduced their treatment of Medicaid patients, and many have withdrawn from the program altogether. The result is not only that the original programmatic goal has not been fully achieved, but also that the costs of the program are higher than they would be otherwise. In this article, the importance of Medicaid participation by office-based primary care physicians is described, and a number of obstacles to their participation are identified. The obstacles include state policies regarding eligibility, coverage, and provider compensation. The article recommends actions pertaining to these policies that might increase participation.     

Testing the satisficing version of the political business cycle 1905–1984

This paper develops a test of the satisficing version of the political business cycle. Previous tests have focused on maximizing models of political behavior and are not sufficiently general to test for satisficing behavior. Using annual U.S. data for the period 1905 to 1984, we find evidence supporting the satisficing version of the political business cycle model, but we reject the maximizing version. In accordance with the satisficing hypothesis, we find that increasing inflation or unemployment and decreasing monetary base growth in the third year of a presidential term are followed typically by reversals during the election year.We wish to thank Gordon Tullock and two anonymous referees for valuable comments.     

Operational criteria for the determination of suicide

Suicide is an important public health problem for which we have an inadequate public health database. In the United States, decisions about whether deaths are listed as suicides on death certificates are usually made by a coroner or medical examiner. These certification decisions are frequently marked by a lack of consistency and clarity, and laws and procedures for guiding these decisions vary from state to state and even from county to county. Without explicit criteria to aid in this decision making, coroners or medical examiners may be more susceptible to pressures from families or communities not to certify specific deaths as suicide. In addition, coroners or medical examiners may certify similar deaths differently at different times. The degree to which suicides may be underreported or misclassified is unknown. This makes it impossible to estimate accurately the number of deaths by suicide, to identify risk factors, or to plan and evaluate preventive interventions. To remedy these problems, a working group representing coroners, medical examiners, statisticians, and public health agencies developed operational criteria to assist in the determination of suicide. These criteria are based on a definition of suicide as "death arising from an act inflicted upon oneself with the intent to kill oneself." The purpose of these criteria is to improve the validity and reliability of suicide statistics by: (1) promoting consistent and uniform classifications; (2) making the criteria for decision making in death certification explicit; (3) increasing the amount of information used in decision making; (4) aiding certifiers in exercising their professional judgment; and (5) establishing common standards of practice for the determination of suicide.     

In the eye of the beholder: Meaning and structure of informal status in women's and men's prisons*

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.