Ballistic impact of hollow-point ammunition on porcine bone

Identifying failure mechanisms in skeletal tissue allows a deeper understanding of the effects of specific projectile impacts on bone. While ballistic trauma in flat bones is largely researched, knowledge of how long bones react to gunshot impacts is limited in the literature. The impacts of deforming ammunition appear to produce higher levels of fragmentation; however, these have not been studied in depth. This study compares the damage to femora bone by HP 0.357 and 9 mm projectiles constructed with both full and semi-metal jackets. Impact experiments were undertaken on a single-stage light gas gun involving the use of a high-speed video camera and full reconstruction of the bones to ascertain fracture patterns occurring in the femora. Higher degrees of fragmentation are likened to the presence of semi-jacketed HP projectiles than jacketed HP projectiles. The observations of external facing beveled edges are believed to be associated with the increased separation of the jacket and lead core of projectiles. Additionally, experimentation has shown that the amount of kinetic energy lost postimpact is likely related to the presence or the absence of a metal jacket on an HP projectile. The observed data, therefore, suggest that the composition, rather than the configuration, of a projectile affects the type and extent of the damage.     

Where Does Location Affordability Drive Residential Mobility? An Analysis of Origin and Destination Communities

Abstract

Despite an overall decrease in residential mobility after the 2007 housing crisis, many households, particularly those that are low income, continue to move in pursuit of a better life. Traditional theories of residential mobility suggest that mobility will occur when housing and transportation costs are cumulatively greater than the cost of moving to a new location. At the same time, the influence of these factors is not likely to be uniform across geographic contexts or for moves up or down the metropolitan hierarchy. Our analysis examines how well affordability measures explain patterns of county-level residential mobility. Specifically, we contrast conventional measures of affordability focused on the ratio of income to housing expense with measures of location affordability that factor in both housing and transportation costs. We find that whereas households tend to move from lower to higher cost locations, transit affordability at the destination plays an important role in mobility decisions.     

Asia's rise and the politics of Australian aid policy

Abstract The economic rise of developing Asia has given impetus to debates over the geographic orientation, strategy, organisation, and collaborative relationships of the Australian aid programme. This paper examines these debates, Australian government responses, and the politics underlying these responses. It points to, among things, the different ways in which the Labor Party and the Liberal–National Coalition have dealt with these issues, reflecting their different constituencies and foreign policy philosophies. The paper also assesses the future trajectory of Australian aid policy, in particular, the extent to which it is embracing the Chinese model of aid.     

What Does ‘Collaboration’ Without Government Look Like? The Network Qualities of an Emerging Partnership

Cross‐sectoral partnerships are increasingly common in Australian human service delivery. Yet research has not often focused on partnerships where private actors broker an arrangement to address complex community needs. Using a combination of interviews, focus groups, and social network analysis (SNA), this paper investigates the network qualities of a nascent partnership between a not for profit (NFP) service provider and a major retail water company that seeks to address financial hardship. Ultimately, we assess whether this represents genuine collaboration or another form of joint action. We find that the privately steered partnership generates instrumental benefits characteristic of cross‐sectoral arrangements, as well as challenges. SNA reveals a very high degree of connection between the partner organisations, but the results suggest that the partnership is coordinative rather than collaborative. We also find that this is leading to tacit organisational and institutional modifications as the NFP assumes a ‘market facing’ posture and adjusts to the demands of working with private sector partners. However, at this early stage of development, the level of systemic adjustment between both organisations remains incomplete.     

The influence of interest: Real US interest rates and bilateral investment treaties

Bilateral Investment Treaties (BITs) present developing countries with a trade-off. BITs plausibly increase access to international capital in the form of foreign direct investment (FDI), but at the cost of substantially curtailing a government’s policy autonomy. Nearly 3000 BITs have been entered into, suggesting that many countries have found this trade-off acceptable. But governments’ enthusiasm for signing and ratifying BITs has varied considerably across countries and across time. Why are BITs more popular in some places and times than others? We argue that capital scarcity is an important driver of BIT signings: The trade-off inherent in BITs becomes more attractive to governments as the need to secure access to international capital increases. More specifically, we argue that the coincidence of high US interest rates and net external financial liabilities heightens governments’ incentives to secure access to foreign capital, and therefore results in BIT signings. Empirical evidence is consistent with our theory.     

Desistance and Legitimacy: The Impact of Offender Notification Meetings on Recidivism among High Risk Offenders

Legitimacy-based approaches to crime prevention assume that individuals will comply with the law when they believe that the law and its agents are legitimate and act in ways that are “fair” and “just.” Currently, legitimacy-based programs are shown to lower aggregate levels of crime; yet, no study has investigated whether such programs influence individual offending. Using quasi-experimental design and survival analyses, this study evaluates the effectiveness of one such program—Chicago’s Project Safe Neighborhoods’ (PSN) Offender Notification Forums—at reducing individual recidivism among a population of returning prisoners. Results suggest that involvement in PSN significantly reduces the risk of subsequent incarceration and is associated with significantly longer intervals that offenders remain on the street and out of prison. As the first study to provide individual-level evidence promoting legitimacy-based interventions on patterns of individual offending, out study suggests these interventions can and do reduce rates of recidivism.     

Corruption and hold-up: the role of intermediaries

Corrupt contracts are illegal and, therefore, vulnerable to hold-up. That is, a bureaucrat who has accepted a bribe from a firm in exchange for a license may still choose not to grant the firm that license (hold-up). This paper develops a model to study the role that intermediaries play in preventing hold-up. There are two types of firms, good firms that are legally entitled to receive a license, and harmful firms that are not. Without intermediaries only good firms enter the market, and harmful firms do not enter because of hold-up. Intermediaries are legally permitted to help firms reduce their navigation costs of obtaining licenses. Thus, intermediaries increase entry of good firms. However, by utilizing the legal aspects of their transaction with good firms as leverage against the bureaucrat, intermediaries can prevent hold-up among harmful firms. Thus, intermediaries increase participation by both good and harmful firms and their welfare costs are ambiguous. Data obtained from occurrences of violations of the Foreign Corrupt Practices Act are broadly consistent with our model.