Skin penetration surrogate for the evaluation of less lethal kinetic energy munitions

Although the benefits of the use of less lethal kinetic energy munitions are numerous, there is a need to evaluate the munitions prior to deployment to ensure their intended effect. The objective of the current research was to validate a surrogate that could be used to predict the risk of penetration of these devices. Existing data from biomechanical testing with post-mortem human specimens (PMHS) served as the foundation for this research. Development of the surrogate involved simulating the various layers of the skin and underlying soft tissues using a combination of materials. A standardized 12-gauge impactor was used to assess each combination. The energy density that resulted in a 50% risk of penetration for the anterior thorax region (23.99 J/cm(2)) from the previous research was matched using a specific combination of layers. Twelve various combinations of materials were tested with the 50% risk of penetration determined. The final validated surrogate consisted of a Laceration Assessment Layer (LAL) of natural chamois and .6 cm of closed-cell foam over a Penetration Assessment Layer (PAL) of 20% ordnance gelatin. This surrogate predicted a 50% risk of penetration at 23.88 J/cm(2). Injury risk curves for the PMHS and surrogate development work are presented.     

Investigating the Determinants of the Street Code and its Relation to Offending among Adults

Theoretical and empirical consideration has long been given to the role of subcultural attitudes and how they relate to delinquency and crime. Recently, Anderson has reconceptualized these early attitudinal depictions by considering the formation and role of these specific attitudes or ‘code of the street’ among African-Americans in inner-city neighborhoods. A number of important findings have emerged from this literature, yet much remains to be considered. We contribute to this literature in three specific ways by examining: (1) the scope of street code attitudes across a wide variety of individuals—and not just inner-city African American (males) to assess the generalizability of these attitudes; (2) the correlates of street code attitudes; and (3) the extent to which street code attitudes mediate the relationship between various demographic and attitudinal (self-control) variables and crime. Theoretical implications and directions for future research are addressed.     

Beyond the Gaze and Well Beyond Wolfenden: The Practices and Rationalities of Regulating and Policing Sex Work in the Digital Age

Drawing on the largest study of the United Kingdom online market in sexual labour to date, this article examines the legal and regulatory consequences as aspects of sex work increasingly take place within an online environment. Our research shows that while governmental policy has not kept abreast of these changes, the application of current laws (which have, since the 1950s, focused on public nuisance and, more recently, trafficking and modern slavery) are pernicious to sex workers and unsuited to recognizing and responding to the abuses and exploitation in online markets in sexual labour. These injustices are likely to be exacerbated if policies and policing do not better align with the realities of these markets in the twenty‐first century. This demands a more nuanced regulatory approach which recognizes that people may engage in sex work of their own volition, but which also addresses conditions of labour and criminal exploitation.     

Gross and histologic postmortem changes of the skin

Many methods have been attempted to accurately and systematically determine the estimated time of death in autopsy cases. Gross changes of the skin which occur during the postmortem interval have occasionally been used to estimate the time of death under different conditions; however, the postmortem gross and histologic changes of the skin have not been systematically analyzed. We sequentially studied the gross and microscopic appearance of skin in 3 individuals during the early postmortem interval (<1 week) in an outdoor, shaded, cool to temperate climate. Photos and skin biopsy specimens were taken from 4 sites (acral skin, scalp, dependent truncal skin, and nondependent truncal skin) every 12-24 hours on each individual. The gross appearance of the skin remarkably did not change significantly in any of the sites after 1 week of decomposition. Three main histologic changes were seen in the skin biopsy specimens: focal dermal-epidermal separation, eccrine duct necrosis, and dermal degeneration. Although bullae were not present in the gross examination of the skin, focal separation of the epidermis from the dermis was appreciated in several skin biopsies; however, the timing of development was unpredictable. Eccrine duct necrosis was another histologic finding and was relatively predictable, occurring in dependent and nondependent truncal skin biopsies from all 3 individuals between days 4 and 7. Dermal degeneration was a uniform histologic finding only in biopsies from nondependent truncal skin, occurring in all individuals on day 2. Although this study is limited by the small number of subjects and uncontrolled extrinsic factors, histologic findings, such as eccrine gland necrosis and dermal degeneration, in select cutaneous biopsies may be useful in estimating the time of death in the early postmortem interval.     

Regional Development of Small Firms in Poland

Employing a probit, logit and gompit model this paper demonstrates that small firm development, represented by a group of structural, behavioral and performance variables determine regional location in Poland. The paper uses original data that samples the small firm stratum in two contrasting regions, Pomorskie and Lubelskie. The following variables were shown to be significantly correlated with regional location: legal structure, subcontracting, technological level of the products of the firm, average wage and intention to expand turnover.     

Contents of Volume 13

Volume Contents

Contents of Volume 13