Piercing the surface: A mechanical analysis of stabbing with household tools

Estimating the applied power during a stabbing incident, or estimating the minimal force necessary to penetrate the body with a certain weapon is a challenging task in forensic practice. A thorough forensic evaluation of stabbing forces needs objective numerical experimental data. Stabbing tests of 12 different weapons – including knives, a pair of scissors, a fork, screwdrivers, a rasp, a corkscrew, and a utility knife blade – were performed with a Mecmesin MultiTest-dV material tester on pork loin and ballistic gel to estimate the stabbing forces and dynamics. Penetration force (F_p) and maximal force (F_max) were recorded, and the registered force curves were analyzed. F_max was 159.8–212.07 Newton (N), 30.56–30.58 N, 168.9–185.48 N for various knives; 171.39–190.43 N for the pair of scissors, 233.6 N for the fork; 532.65–562.65 N, 370.31–367.19 N and 314.51–432.89 N for various screwdrivers, 44.14–56.62 N for utility knife during pork loin stabbing. The butter knife, corkscrew and rasp were not able to penetrate the pork loin, and the curved fork bent during stabbing. The results prove that weapon characteristics greatly influence the force necessary for penetration. Maximal stabbing force depends mostly on tip sharpness, and the force sharply decreases after penetration occurs, which indicates that edge sharpness is not as important as tip characteristics during stabbing perpendicular to skin surface. The penetration force during stabbing with a pair of scissors is comparable to the penetration force of knives. Stabbing with screwdrivers generally needs larger force than average knives but depends greatly on screwdriver size.     

The STAR Community Rating System: An Analysis of the Communities Participating in the Program

This study is the first to explore the STAR Community Rating System® (STAR), a data-driven sustainability framework and certification program launched in October 2012, that allows local governments to measure their sustainability performance and progress relative to other communities. This research identifies and analyzes the major characteristics of the communities that are currently participating in the program. A discussion of the findings and policy recommendations should help increase the membership and effectiveness of the STAR system. More importantly, it reinforces the enormous potential that local governments have with respect to leveraging the synergies between economic, environmental, and societal priorities.     

Determining the Source of Equine Bloodstains by Dinucleotide Repeats*

Abstract: A novel multiplex of independent dinucleotide tandem repeat (DTR) loci was previously described that is capable of not only discriminating human and equine DNA, but of identifying a single equine source. We report a case in which a bloodstained syringe and two needles were found during inspection of a barn by inspectors of the Pennsylvania Racing Commissions. Using the multiplex and single‐locus detection, all 21 equine DTR markers were detected in a suspect horse and two evidence samples, indicating the evidence samples came from the suspect animal. Only six markers were detected in the third evidence sample because the volume of blood was limited. Following whole‐genome amplification and single‐locus PCR, the third evidence sample detected a total of 17 markers and the likelihood of identity (probability from suspect horse/probability from a random pacer) was 7.0 × 10⁶. The DTR multiplex has some technical limitations, but it is already practical for casework.     

Governance in Developing Countries: Sri Lanka and South Africa Compared

In this article, we investigate the main features of the governance model in two developing democracies, Sri Lanka and South Africa. We believe that these two countries are interesting test cases for a comparative study. Both countries are former British colonies and have inherited a similar administrative system heavily influenced by the British colonial model and have experienced an ethnic conflict to different extents in the past.

This comparison allows us to examine the determining factors for and against the level of effectiveness of governance in both countries. The findings suggest that the socio-political system within which they operate is dynamic and is an important influence for integrated governance. The study concludes that the outcomes of governance in both countries are better explained by taking into account the features described in an integrated governance model. This provides a better understanding of the dynamics of governance in developing countries.     

Participation in the Budgetary Process in Local Government

Direct democracy is seen as a means of reengaging citizens in the political process. However, it is a contested concept that requires further development by being grounded in a specific context. This article reports on research undertaken in Victorian local government where the New Public Management (NPM) has been in evidence for a number of decades which according to the literature has impacted on accountability to the broader community. The possibility of consultation and citizen participation in the local government budgetary process was examined. The results reported suggest that participation in the budgetary decisions in local government is possible.