Carbon monoxide concentrations in the 2009 Victorian Bushfire disaster victims

Blood was available for the estimation of carboxyhemoglobin saturation (COHb) in 30 of the 173 persons who died in the Victorian bushfires in February 2009. The ages of these 30 deaths ranged from 3 to 80 years and there were 8 females. 13 cases (43%) were considered negative (less than 5% COHb), 12 (40%) were between 5 and 40% COHb, 2 (6.7%) between 40 and 50% and 3 (10%) were greater than 50% COHb. There were 6 persons either found within a building or a car and the COHb in these cases ranged up to 69% (mean 50%). There were 5 cases where the location was unable to be determined as either indoor or outdoor due to the extensive nature of the fire. The remaining 19 deceased persons were all located outside in the open and the concentration of COHb in these cases ranged up to 30% (mean 19%). Hydrogen cyanide was only detected in two deceased persons at concentrations of 0.5 and 2.7 mg/L, respectively. 13 deceased were found to have soot in the airways following necropsy but this did not correlate with the COHb levels.     

Trafficking in persons and victim health in Australia

This article explores the health problems experienced by victims of trafficking in persons in Australia and analyses the domestic support schemes established to assist these victims. It focuses specifically on the health of adult, female victims who constitute the majority of identified victims, and who are the principal recipients of government support services. Domestic experiences and support schemes are reviewed in the light of international law and best practice guidelines. Recommendations are made to improve the health services available to victims of trafficking in persons in Australia.     

Cyber-trespass and 'Unauthorized Access' as Legal Mechanisms of Access Control: Lessons from the US Experience

The common law doctrine of trespass to chattels has recentlybeen revived and applied by courts in the United States (US)to cover intrusions (in the form of electronic signals) to computersystems connected to the Internet. These cases represent judicialrecognition of the need to protect certain unwanted intrusionsin cyberspace, though the principles developed therewith areremarkably expansive. As such, they overlap with the conceptof ‘unauthorized access’ under computer misuse legislationin the US and elsewhere. This overlap has yet to be judiciallyacknowledged. Since the US, the United Kingdom and other commonlaw countries not only share a common law ancestry but also‘unauthorized access’ principles as the primarytrigger for computer misuse, this paper seeks to examine theconsequences of developing a broad cyber-trespass doctrine beyondthe US, and its corresponding implications for judicial interpretationsof ‘unauthorized access’ in the common law world.     

Gunshot residue in Chicago police vehicles and facilities: an empirical study

Suspects in shooting investigations in Chicago are routinely transported in department vehicles and detained in department facilities prior to gunshot residue (GSR) evidence collection. The GSR test results are used to associate the suspect with primary exposure to GSR. The potential for these vehicles and facilities being sources of secondary GSR contamination needed to be determined. A total of 201 samples were collected from randomly selected vehicles and detention facilities. The sampling collected trace materials from surfaces that suspects' hands may contact during the arrest process. These samples were examined for the presence of GSR particles using scanning electron microscopy. Upon completion of the automated analysis, those particles that met an initial GSR screening criterion were relocated and reanalyzed. The locations where GSR particles were recovered allowed us to make recommendations to the Chicago Police Department with regard to transporting and detaining these suspects. The low number of GSR particles recovered suggests that the potential for secondary contamination, although present, is relatively low.     

A Statistical Validation of the Individuality and Repeatability of Striated Tool Marks: Screwdrivers and Tongue and Groove Pliers*

Abstract: Tool mark identification relies on the premise that microscopic imperfections on a tool’s working surface are sufficiently unique and faithfully transferred to enable a one‐to‐one association between a tool and the tool marks it creates. This paper presents a study undertaken to assess the validity of this premise. As part of this study sets of striated tool marks were created under different conditions and on different media. The topography of these tool marks was acquired and the degree of similarity between them was quantified using well‐defined metrics. An analysis of the resulting matching and nonmatching similarity distributions shows nearly error‐free identification under most conditions. These results provide substantial support for the validity of the premise of tool mark identification. Because the approach taken in this study relies on a quantifiable similarity metric, the results have greater repeatability and objectivity than those obtained using less precise measures of similarity.     

Pilot Study of Automated Bullet Signature Identification Based on Topography Measurements and Correlations*†

Abstract: A procedure for automated bullet signature identification is described based on topography measurements using confocal microscopy and correlation calculation. Automated search and retrieval systems are widely used for comparison of firearms evidence. In this study, 48 bullets fired from six different barrel manufacturers are classified into different groups based on the width class characteristic for each land engraved area of the bullets. Then the cross‐correlation function is applied both for automatic selection of the effective correlation area, and for the extraction of a 2D bullet profile signature. Based on the cross‐correlation maximum values, a list of top ranking candidates against a ballistics signature database of bullets fired from the same model firearm is developed. The correlation results show a 9.3% higher accuracy rate compared with a currently used commercial system based on optical reflection. This suggests that correlation results can be improved using the sequence of methods described here.     

The total effects of boot camps that house juveniles: A systematic review of the evidence

Boot camp programs were first introduced in the 1980s, became increasingly popular as a correctional sanction, and were widely adopted and implemented throughout the United States. This study involved an examination of the prevalence of state run boot camps for juvenile delinquents and a systematic review of the existing evaluations of boot camp programs that house juveniles. In addition to the effects of boot camps on recidivism, within program effects on participants’ attitudes and perceptions of boot camp, and jurisdiction-level effects on bed space were examined. Findings revealed that boot camps are less prevalent than they were in the 1990s. Boot camps, by themselves, typically do not have an effect on participants’ odds of recidivism. Boot camps do seem to improve individuals’ attitudes and other behaviors within programs. Boot camps also appear to reduce the number of confinement beds jurisdictions require, often resulting in cost savings. These findings are discussed in terms of their implications for research and practice.     

Transforming China poverty crisis： Challenges and issues

This paper describes the economic conditions of urban and rural poverty in China. The examination of this problem deconstructs into three components and this explains why this problem is China＇s premier economic problem, despite its recent economic progress into a world ranked industrial economic power. Here, this paper examines the period of 1985 to 2008, a period of almost exponential growth. Even though during this period millions escaped from poverty levels of income, this was only part of the positive results. There were social negatives as well, and the main one was that economic inequality became worse, as the impoverished, as well as being affected by the current financial situation that has overcome the Chinese labor market, has put them into competition with the better off who are in the same economic predicament. As China merges into forms of economic globalization, any external blow will cause sharp fluctuations within the Chinese economy, as reflected within the labor market. Unemployment imposes direct impacts on incomes, and may give rise to social instability. As a result, job growth should be at the top of the macro-control agenda.     

A Prototype of Mathematical Treatment of Pen Pressure Data for Signature Verification

A prototype using simple mathematical treatment of the pen pressure data recorded by a digital pen movement recording device was derived. In this study, a total of 48 sets of signature and initial specimens were collected. Pearson's correlation coefficient was used to compare the data of the pen pressure patterns. From the 820 pair comparisons of the 48 sets of genuine signatures, a high degree of matching was found in which 95.4% (782 pairs) and 80% (656 pairs) had rPA > 0.7 and rPA > 0.8, respectively. In the comparison of the 23 forged signatures with their corresponding control signatures, 20 of them (89.2% of pairs) had rPA values < 0.6, showing a lower degree of matching when compared with the results of the genuine signatures. The prototype could be used as a complementary technique to improve the objectivity of signature examination and also has a good potential to be developed as a tool for automated signature identification.     

Can We Identify Bad Cops Based on History? Base Rates of Historical Markers in Law Enforcement Pre-employment Evaluations

While psychometric police selection processes have progressively evolved, the efficacy of simple background information has not been extensively evaluated. This study examined the utility of base rate information to predict job performance among law enforcement officers. Pre-employment historical markers from bad hires were compared to good hires from a large sample of 1536 officers. Of this sample, 205 officers were categorized as bad hires if they were arrested, had greater than five misconduct episodes, or were terminated for cause within 5 years following hire. Base rates of 40 pre-employment history variables were compared for good and bad hires. Analysis of markers showed that bad hires had a significantly higher frequency of markers across family factors, mental health variables, conduct problems, and criminal justice outcomes compared to good hires. Among the largest differences were history of multiple physical altercations, outpatient psychiatric treatment, and events related to previous law enforcement employment such as employer reprimands, suspensions, or fitness for duty evaluations. Many other intuitive markers occurred too infrequently to analyze or showed no significant difference between good hires and bad hires in law enforcement settings. Base rates in addition to psychological test data are necessary aspects of the police pre-employment evaluation.