A Comparison of Thresholding Methods for Forensic Reconstruction Studies Using Fluorescent Powder Proxies for Trace Materials

Image segmentation is a fundamental precursor to quantitative image analysis. At present, no standardised methodology exists for segmenting images of fluorescent proxies for trace evidence. Experiments evaluated (i) whether manual segmentation is reproducible within and between examiners (with three participants repeatedly tracing three images) (ii) whether manually defining a threshold level offers accurate and reproducible results (with 20 examiners segmenting 10 images), and (iii) whether a global thresholding algorithm might perform with similar accuracy, while offering improved reproducibility and efficiency (16 algorithms tested). Statistically significant differences were seen between examiners’ traced outputs. Manually thresholding produced good accuracy on average (within ±1% of the expected values), but poor reproducibility (with multiple outliers). Three algorithms (Yen, MaxEntropy, and RenyiEntropy) offered similar accuracy, with improved reproducibility and efficiency. Together, these findings suggest that appropriate algorithms could perform thresholding tasks as part of a robust workflow for reconstruction studies employing fluorescent proxies for trace evidence.     

The influence of trust and collaboration with external partners on appropriability in open service firms

The Journal of Technology Transfer - This study explores how service firms in an open exchange of knowledge protect themselves against opportunistic behavior while trying to acquire some knowledge...     

“I Had a Confidence Epiphany!”: Obstacles to Combating Post-Identification Confidence Inflation

Research shows that eyewitnesses often become more confident with their selections from a lineup over time, a problem labeled "confidence inflation." Wells et al. (1998) Law and Human Behavior, 22, 603-647 suggested that eyewitnesses provide a confidence statement immediately following their selection to capture an unadulterated measure of confidence. Three experiments tested the effectiveness of introducing such a statement to combat the effects of confidence inflation on mock-juror judgments. All experiments provided evidence that the attributions participants formed about the eyewitness' confidence inflation differentially impacted their judgments. Although mock-jurors generally discredited eyewitnesses who showed confidence inflation and sometimes lowered probability of guilt ratings for the defendant, a clear exception occurred when mock-jurors attributed the inflation to an epiphany. Use of post-identification confidence statements to decrease the impact of confidence inflation in the courtroom may be insufficient.     

The National Renewable Energy Target: An Example of Post‐Machiavellian Policy‐Making?

Since the election of the Rudd Government in 2007 intergovernmental relations have been a major feature of the political agenda. A ‘new federalism’ approach introduced a re‐invigorated Council of Australian Governments (COAG) focused on developing national policies that reflect coordinated and cooperative policy‐making processes. The establishment of COAG working groups provided the means for developing policies that reflect new levels of agreement between jurisdictions and a common approach to reform. The development of the 20% Renewable Energy Target has been one of the first initiatives of this new approach to policy‐making. This research analyses the process behind the development of the target and places it within the context of the post‐Machiavellian approach, and looks at the implications for future intergovernmental relations.     

The Future of Renewable Energy in Australia: A Test for Cooperative Federalism?

In the context of the Australian federal system industry development will be influenced by the policies of each sphere of government. When announcing a set of policies in 1997 to develop the renewable energy industry the Australian federal government acknowledged the need for a cooperative approach between all governments and industry. The objective of this article is to analyse the government policies over the 1997–2007 period to promote the development of the renewable energy industry in Australia. The article highlights a number of factors that have served as barriers to the development of the industry. The research provides important insight into the difficulties associated with establishing cooperative national arrangements in areas of state government responsibility in the Australian federation. The lessons also inform the current debate on the policy initiatives needed to more effectively reduce greenhouse gas emissions from stationary energy from the increased availability of renewable energy .     

A commentary on the rollout of 5g mobile in the UK

The first waves of the fifth generation of mobile phone technology, 5G, are breaking on the telecommunication shores of the United Kingdom. The government's ambition is for the United Kingdom to be a global leader in 5G mobile technology, but its widespread commercial deployment faces a number of barriers and challenges. The aims of this commentary paper are to outline the main characteristics and rollout of 5G mobile technology, to explore the forces driving and shaping the 5G market, to examine the perceived barriers to the deployment of 5G networks, and to offer some wider reflections on the rollout of 5G.     

Partner Abuse and HIV Infection: Implications for Psychosocial Adjustment in African American Women

A prospective study of the effects of partner abuse among HIV-infected and noninfected African American women (N = 137) revealed that there were both concurrent and longitudinal effects of abuse on several indices of psychosocial adjustment. Specifically, higher levels of both verbal and physical abuse were found among the HIV-infected group. In addition, the effects of abuse on suicidal ideation were significantly stronger among the HIV-infected group (n = 53) than among their demographically similar noninfected counterparts (n = 84), resulting in significant HIV status by partner abuse interactions. The findings of this study advance our understanding of intimate relationships with regard to partner abuse by examining a group of women at high-risk for abuse, yet understudied in both the HIV/AIDS and relationship literatures.