Portable high‐resolution automated 3D imaging for footwear and tire impression capture

The forensic science community raised the need for improved evidence recognition, collection, and visualization analytical instrumentation for field and laboratory use. While the 3D optical techniques for imaging static objects have been extensively studied, there is still a major gap between current knowledge and collecting high‐quality footwear and tire impression evidence. Among optical means for 3D imaging, digital fringe projection (DFP) techniques reconstruct 3D shape from phase information, achieving camera‐pixel spatial resolution. This paper presents a high‐resolution 3D imaging technology using DFP techniques dedicated to footwear and tire impression capture. We developed fully automated software algorithms and a graphical user interface (GUI) that allow anyone without training to operate for high‐quality 3D data capture. We performed accuracy evaluations and comparisons comparing with the commercial high‐end 3D scanner and carried out qualitative tests for various impressions comparing with the current practices. Overall, our technology achieves similar levels of accuracy and resolution with a high‐end commercially available 3D scanner, while having the merits of being (1) more affordable; (2) much easier to operate; and (3) more robust. Compared with the current practice of casting, our technology demonstrates its superiority because it (1) is non‐destructive; (2) collects more evidence detail than casts, especially when an impression is fragile; (3) requires less time and money to collect each piece of evidence; and (4) results in a digital file that can easily be shared with other examiners.     

Exploring the Effects of North–South and South–South Research Collaboration in Emerging Economies,the Colombian Case

International research collaboration (IRC) is associated with both positive and negative effects on the performance of research in emerging economies. While some authors claim that North–South collaborations improve scientific quality and visibility for Southern countries, others claim that it may entail the reorientation of research to comply with Northern agendas. South–South collaborations are thought to increase the focus on local affairs, therefore leading to a relatively small number of scientific international publications appearing in “high quality” journals. Research on the impact of IRC beyond publications in international journals has been neglected despite the importance of other products in knowledge creation. This research uses a broad range of scientific outputs to empirically assess such assumptions and explore the outcomes of IRC in Colombia. Results from multivariate regressions and nonparametric analyses show that, contrary to common assumptions, Colombian research teams collaborating with partners from the global South report higher scientific production, while those collaborating with Northern countries seem to contribute to local knowledge the most.     

Plugged In

When people fabricate stories about a person,especially a popular star,and then spread them online,they cannot hide behind screens.They can easily be traced and taken to court.A report released on December 19,2019by the Beijing Internet Court showed that about 28 percent or 41,948,of Internetrelated cases filed from January to November of the same year were related to reputation infringement.     

Does Coproduction of Public Services Support Government's Social Equity Goals? The Case of U.S. State Parks

The growing phenomenon of government-supporting charities prompts the question of whether these institutions help or hinder public values of equity in service access. Logit and tobit regression analysis using multiple data sources from the California and Florida state parks systems compares public parks with and without supporting “friends” groups. The results suggest that while parks philanthropy has produced real benefits in rallying citizen support for improved public spaces, it also introduces some distributional consequences that policy makers should not ignore. Namely, a philanthropic failure hypothesis is supported whereby wealthier Florida counties with greater income inequality are more likely to benefit from a charity supporting a nearby state park. Finding no similar result in California, the authors conclude that the association between community wealth and park charity presence may also depend on state characteristics such as the funding structure of each state park system, not just community wealth differences.     

网络诈骗犯罪的司法认定难题探解

网络诈骗作为诈骗罪的特殊形式,具有专门的入罪与量刑标准。与传统诈骗相比,网络诈骗的入罪门槛低,量刑相对重,准确认定网络诈骗对于正确定罪量刑,实现刑法的罪责刑相适应原则至关重要。然而现有司法解释并未明确网络诈骗的概念,且理论界和实务界尚未形成统一认识,致使网络诈骗的司法认定成为实践中的疑难问题。正确认定网络诈骗,首先是要厘清普通诈骗与网络诈骗的区别,以解决罪与非罪的问题;然后要厘清网络诈骗与特定网络环境下盗窃、赌博及信用卡诈骗的区别,以解决此罪与彼罪的问题。     

Estimating Individual Contributions to Complex DNA SNP Mixtures.,

High‐throughput sequencing (HTS) of large panels of single nucleotide polymorphisms (SNPs) provides an alternative or complimentary approach to short tandem repeats (STRs) panels for the analysis of complex DNA mixture forensic samples. For STRs, methods to estimate individual contribution concentrations compare capillary electrophoresis peak heights, peak areas, or HTS allele read counts within a mixture. This article introduces three approaches (mean, median, and slope methods) for estimating individual DNA contributions to forensic mixtures for HTS/massively parallel sequencing (MPS) SNP panels. For SNPs, the major:minor allele ratios or counts, unique to each contributor, were compared to estimate contributor proportion within the mixture using the mean, median, and slope intercept for these alleles. The estimates for these three methods were typically within 5% of planned experimental contributions for defined mixtures.     

Public servants’ appreciation for themes in public administration scholarship

One of the defining characteristics of Canadian Public Administration is its singular coverage of topics. In this research, we extend Wake Carroll and Kpessa’s (2007) work to see if the themes found in Canadian Public Administration (CPA) for the 2008‐2016 period are in line with the topics published for the 2000‐2006 period. We also compare the contemporary topics published in CPA to the Australian Journal of Public Administration (AJPA). We then surveyed Canadian public servants about their interests. Our results show that they express more interest towards the themes published in CPA in the last decade than during 2001‐2006, and more interest than the ones published in AJPA in the last decade.     

Federalism and university governance in Canada

There is increasing interest in how universities are governed, externally and internally (Austin and Jones 2016). Drawing on a comparative case study of the governance of six major Canadian universities and the literature, this article describes the impact of federal research and innovation policy and programs on universities and reflects on Ottawa's role. We suggest that the federal government participates in the external governance of universities, but in a way that differs significantly from provincial governments. Canadian federalism appears to be generally beneficial for university autonomy and examination of its operation sheds light on factors that enable universities to sustain their autonomy.