Latent Fingermark Development on Thermal Paper using 1,2‐Indanedione/Zinc and Polyvinylpyrrolidone,

Polyvinylpyrrolidone (PVP) has been used in combination with 1,2‐indanedione (1,2‐IND) and ZnCl₂ (Zn) to develop latent fingermarks. The results show that the optimal ratio of 1,2‐IND/Zn:PVP is 1.0:0.4 (the concentration of PVP is 8%) for developing fingermark. The developed formulation was tested on the surfaces of 12 kinds of thermal papers. The variation in the fingermark development efficiency was observed within the same and among different kinds of thermal papers. The fingermark development efficiency was mostly better on the thermally sensitive surface compared to the thermally nonsensitive surface. However, similar or even better development was observed from a few thermally nonsensitive surfaces. The present method has shown better efficiency compared to the three other proposed methods on the thermally sensitive surface. In contrast, the present method was proven not the best for the thermally nonsensitive surface.     

Development and Assessment of Postcranial Sex Estimation Methods for a Guatemalan Population

This study tests whether postcranial sex estimation methods generated from Hispanic, and mainly Mexican samples, can be successfully applied to other increasingly common migrant populations from Central America. We use a sample of postcranial data from a modern (1980s) Guatemalan Maya sample (n = 219). Results indicate a decrease in classification accuracies for previously established univariate methods when applied to the Guatemalan study sample, specifically for males whose accuracies ranged from 30 to 84%. This bias toward inaccuracies for Guatemalan males is associated with the smaller skeletal sizes for the Guatemalan sample as compared to the samples used in the tested sex estimation methods. In contrast, the tested multivariate discriminant function classification yielded less sex bias and improved classification accuracies ranging from 82 to 89%. Our results highlight which of the tested univariate and multivariate methods reach acceptable levels for accuracy for sex estimation of cases where the region of origin may include Guatemala.     

Testing Times Ahead: Non‐Invasive Prenatal Testing and the Kind of Community We Want to Be

This article reviews the Nuffield Council on Bioethics’ report on Non‐Invasive Prenatal Testing (NIPT); and introduces two general questions provoked by the report – concerning, respectively, the nature and extent of the informational interests that are to be recognised in today's ‘information societies’ and the membership of today's ‘genetic societies’. The article also considers the role and nature of the Nuffield Council. While the Council's report identifies a range of individual and collective interests that are relevant to determining the legitimate uses of NIPT, we argue that it should put these interests into an order of importance; we sketch how this might be done; and we suggest that, failing such a prioritisation of interests, the Council should present its reflections in a way that engages public debate around a number of options rather than making firm recommendations.     

Protecting Free Speech and Academic Freedom in Universities

Restrictions on speaking events in universities have been created both by recent student‐led efforts at ‘no‐platforming’ and by Part 5 of the Counter‐terrorism and Security Act 2015 which placed aspects of the government's Prevent strategy on a statutory basis. The statutory Prevent duty in universities includes, under the accompanying Guidance, curbing or monitoring events that could have an impact in drawing persons into terrorism. This article places the combined impact of Part 5 and student‐led curbs on campus speech in context by juxtaposing pre‐existing restrictions with the various free speech duties of universities. Focusing on speaking events, it evaluates the resulting state of free speech and academic freedom in universities. It finds potential violations of established free speech norms due to the impact of pre‐emptive strikes against some campus‐linked speech articulating non‐mainstream viewpoints. But it also argues that not all such speech has a strong foundation within such norms.     

Restoring Confidence: Replacing the Fixed‐term Parliaments Act 2011

This article considers both the Fixed‐term Parliaments Act 2011 (FTPA) and the political constitution, to place the former in its political and constitutional context. It begins by setting out the background to the FTPA – which was a part of a Coalition agreement – and considers difficulties with the most commonly‐made arguments in favour of fixed‐term parliaments. The second part of the article considers the impact and potential practical legal consequences if the FTPA is repealed without any replacement, arguing that it will only be possible to revive the ‘dissolution’ prerogative by express words in a new Act. The final part of the article addresses the question of whether the prerogative should be revived, before arguing both that it should not and that a statutory power to call an election should be conferred on the Prime Minister subject to a vote by simple majority in the House of Commons.     

Evaluation of a restorative justice-based,community-based program for people who have offended sexually: participant impact

Community Justice Initiatives, Kitchener, Canada, offers a Restorative Justice program called Revive to people impacted by sexual harm, including men who have offended sexually. This volunteer-led program treats participants with compassion while holding them accountable for sexual harm perpetrated. Program goals include reducing isolation, promoting self-awareness, and fostering healing. Based on restorative justice principles, positive community reintegration and reduction of further sexual offending are the ultimate goals of the program.

We evaluated information from a questionnaire administered at intake, after the 7-week phase, and again after participation in the peer-support group. Participants responded quantitatively about the impact of Revive on six sexual offense-related outcomes statements (e.g., gaining understanding of their triggers, understanding why they sexually offended). They also indicated the impact of Revive on psychosocial dimensions such as stigma perception and social support. Qualitative questions further elucidated the experience of Revive participation. Findings suggest that Revive has an impact on self-understanding of why they sexually offended, victim empathy, as well as stress reduction and increased self-esteem. We conclude that the restorative justice framework is a very hopeful, positive one and that the Revive program is effective at enacting restorative justice-based principles.     

Children's Rights and the Politics of Food: Big Food Versus Little People

This article traces the battle in the United States during the Obama administration, continuing into the Trump administration, to protect children's rights to food. It explores barriers to development of sound, science‐based food policies, including the refusal to recognize food as a human right, anti‐science denialism, hostility toward government regulation, and relative powerlessness of children. It points to the role of a “Big Food Pyramid” composed of powerful food industry and large scale distribution and marketing interests in blocking sound policies in prenatal and infant nutrition, school lunches, SNAP and WIC, the marketing to children of high fat and fructose‐laden products, and campaigns to increase youth fitness. While predicting a continuing assault at the federal level on children's rights to safe and healthy foods, the article highlights the positive role of consumer demand in shaping marketing, labeling and production of food and opportunities for leaders in the food industry and in government at local, municipal and state levels to continue the battle for sound food policies.     

Potential Use in Forensics of a Novel Hybrid Gelatin—Dynamic Impact Assessment

Ballistic gelatin as simulant of the human body and organs is a support in forensics. After having obtained very good results for a new gelatin‐based composite in terms of physicochemical and rheological properties, this study focused on this material's mechanical behavior during stabbing and shooting versus bovine and porcine organs and standard ballistic gelatin. The hybrid gelatin has a predominantly elastic behavior at 23°C, whereas the elastic modulus becomes practically constant in the 10–0.1 Hz frequency range. In terms of stabbing behavior, the small variations obtained between porcine organs and surrogate are below 5%, the perforation indicating a good similarity. From the ballistic test results using 10 × 28T rubber balls, it has been seen that the hybrid ballistic gelatin conducts to more reliable and reproducible values of perforation/penetration versus standard gelatin, making from it a real candidate for use in forensic tests.     

Collection of Wet‐Origin Footwear Impressions on Various Surfaces Using an Electrostatic Dust Print Lifter

Electrostatic dust print lift method is known to be able to recover only dry‐origin footwear impression. However, the wet‐origin footwear impression could also be recovered using this method. As the amount of dust accumulated before deposition of the wet‐origin footwear impression increased, the intensity of the footwear impression lifted with this method became stronger. If the footwear impression is not affected by moisture after it is made, the 28‐h old wet‐origin footwear impression could be recovered using this method. The intensity of the lifted footwear impression did not decrease significantly even when the number of sequential steps increased as long as the shoe sole is wet. However, when the moisture on the shoe sole depleted, the intensity of the footwear impression decreased sharply. This method has the advantage of being able to enhance the footwear impression without being affected by the footwear impressions deposited in the past.     

Carbon and Nitrogen Stable Isotope Analyses of Ephedra Plant and Ephedrine Samples and Their Application For Methamphetamine Profiling

In this study, stable isotope ratio analysis was used to track the precursor information of methamphetamine. The δ¹³C and δ¹⁵N values of 30 nature ephedra plants, 12 synthetic ephedrine/pseudoephedrine (ephedrine), 14 natural ephedrine, and 987 seized methamphetamine samples were measured and compared. Due to different weather and earth conditions, the δ¹³C and δ¹⁵N values of ephedra plants grown in the east and the west of Inner Mongolia showed great difference. The δ¹⁵N values of ephedra plants were consistent with related ephedrine extracted from them. Moreover, the criteria to infer the synthetic origin of ephedrine were set up after the analysis of natural and synthetic ephedrine samples. Finally, the precursor origins of 949 seized methamphetamine samples synthesized by Emde and Nagai method were tentatively inferred. Influenced by different preprecursors, the δ¹³C values of seized methamphetamine samples that synthesized from P2P also showed great difference, and this result is consistent with the reported data.