Latent Fingermark Aging Patterns (Part IV): Ridge Width as One Indicator of Degradation

This fourth article of the series is taking an in‐depth analysis at the visible aging of latent fingermarks regarding changes in ridge widths over time. The objective is to quantify and statistically describe significant ridge size variations under controlled indoor conditions. The effect of three environmental variables are examined: type of secretion (sebaceous‐ and eccrine‐rich) and type of substrate (glass and polystyrene) when aged in three light conditions (direct natural light, shade, and dark). Prior to width measurements, fresh and aged fingermarks were powdered with titanium dioxide (TiO₂) and sequentially photographed at predetermined times over 6 months. Three independent observers measured the ridges from thirty predetermined locations using strategically placed intersecting lines on the print. Results indicate that fingermarks deposited on glass are more resilient to degradation compared with those deposited on plastic. The presence of direct natural light plays a negligible role on degradation compared to secretion and substrate types.     

Review of pathologic findings in remnant hearts following valve donation

The failure of medical examiners/coroners (ME/C) to allow heart valve donation is a major problem encountered by tissue agencies. Even though many ME/C favor tissue donation they remain responsible for determination of cause and manner of death. In 2001, the Jesse E. Edwards Registry of Cardiovascular Disease was approached by one of the nation's largest tissue procurement agencies (The American Red Cross--ARC) for the purpose of performing cardiovascular pathologic examinations following valve donation. The affiliation existed from October 2001 to January 2005. This study was undertaken to review all 593 postvalve recovery heart remnants received during that time period to tabulate the abnormalities identified and to determine whether donation interfered with the determination of cause of death. For each case, a preliminary cause of death was provided by the ARC. The decedent's body height and weight were also provided. Using the preliminary cause of death, the 593 cases were divided into natural and nonnatural manner of death groups. This division of the cases resulted in 106 cases placed in the natural manner of death group and 487 cases in the nonnatural manner of death group. For each case, all cardiac findings including significant conditions, additional findings, incidental findings, and congenital abnormalities were tabulated. Within the natural manner of death group, 15 cases had a noncardiac cause of death and 91 cases had a cause of death suspected to be cardiac related. In the 91 cases, a total of 132 significant cardiac findings were identified and there were six structurally normal hearts including two infants. In the nonnatural manner of death group, 214 significant cardiac findings were identified and 222 cases had a structurally normal heart. In both natural and nonnatural groups, the most common cardiac abnormality was atherosclerotic coronary artery disease. Other frequently encountered conditions were also identified including 11 cases with acute angle of origin of a coronary artery (five cases natural group; six cases nonnatural group). An important feature of this review was the recognition of potentially inheritable conditions that were diagnosed in both natural and nonnatural manner of death groups. There were three cases of hypertrophic cardiomyopathy (one natural; two nonnatural), three cases of arrhythmogenic right ventricular cardiomyopathy (one natural; two nonnatural), and one case of mitral valve prolapse (natural). In reviewing these cases, we did not feel that valve donation severely impaired cardiac pathologic examination. The benefits of cardiovascular pathologic examination by a cardiac pathologist include the identification of significant and incidental findings and recognition of potentially inheritable conditions.     

GC-IRD studies on regioisomeric ring substituted methoxy methyl phenylacetones related to 3,4-methylenedioxyphenylacetone

The methoxy methyl phenylacetones share an isobaric relationship (equivalent mass but different elemental composition) to the controlled precursor substance 3,4-methylenedioxyphenylacetone (3,4-methylenedioxyphenyl-2-propanone; 3,4-MDP-2-P). The ten ring substituted methoxy methyl phenylacetones are resolved by capillary gas chromatography on a modified cyclodextrin stationary phase. All ten regioisomeric ketones eluted before the controlled precursor substance 3,4-methylenedioxyphenylacetone. The vapor phase infrared spectra generated from the capillary column effluent clearly differentiated 3,4-MDP-2-P from the various methoxy methyl phenylacetones. Additionally the methoxy methyl phenylacetones provide unique individual infrared spectra. Infrared absorption frequencies and patterns confirmed the relative position of the methoxy-group and the acetone side-chain for the regioisomeric ketones.     

Police officer attitudes to the practicalities of the sex offenders’ register,ViSOR and Child Sexual Abuse Disclosure Scheme in England and Wales

This paper examines police officer understandings of and attitudes to the sex offenders’ register, Violent and Sex Offenders’ Register (ViSOR) and Child Sexual Offender Disclosure Scheme (CSODS) in England and Wales – an under-researched area in the management of sexual offenders in the UK. This research is an adaptation of an American study utilising a mixed-methods approach, combining an online questionnaire survey (N?=?227) with a series of semi-structured interviews (N?=?27). The study found that police officers, irrespective of role, were generally supportive of the register, ViSOR and CSODS in principle, but they thought that logistics, practicalities, infrastructure, multi-agency collaboration and public understandings had problematic impacts on the scheme in practice. The participants believed that greater investment was needed in terms of time and resource to make the register, ViSOR and CSODS easier to use and access and thus fit for purpose.     

Single source DNA profile recovery from single cells isolated from skin and fabric from touch DNA mixtures in mock physical assaults

The ability to obtain DNA profiles from trace biological evidence is routinely demonstrated with so-called ‘touch DNA evidence’, which is generally perceived to be the result of DNA obtained from shed skin cells transferred from a donor's hands to an object or person during direct physical contact. Current methods for the recovery of trace DNA employ swabs or adhesive tape to sample an area of interest. While of practical utility, such ‘blind-swabbing’ approaches will necessarily co-sample cellular material from the different individuals whose cells are present on the item, even though the individuals' cells are principally located in topographically dispersed, but distinct, locations on the item. Thus the act of swabbing itself artifactually creates some of the DNA mixtures encountered in touch DNA samples. In some instances involving transient contact between an assailant and victim, the victim's DNA may be found in such significant excess as to preclude the detection and typing of the perpetrator's DNA. In order to circumvent the challenges with standard recovery and analysis methods for touch DNA evidence, we reported previously the development of a ‘smart analysis’ single cell recovery and DNA analysis method that results in enhanced genetic analysis of touch DNA evidence. Here we use the smart single cell analysis method to recover probative single source profiles from individual and agglomerated cells from various touched objects and clothing items belonging to known donors. We then use the same approach for the detection of single source male donor DNA in simulated physical contact/assault mixture samples (i.e. male ‘assailant’ grabbing the wrist, neck or clothing from the female ‘victim’, or being in transient contact with bedding from the ‘victim’). DNA profiles attributable to the male or female known donors were obtained from 31% and 35% of the single and agglomerated bio-particles (putative cells) tested. The known male donor ‘assailant’ DNA profile was identified in the cell sampling from every mixture type tested. The results of this work demonstrate the efficacy of an alternative strategy to recover single source perpetrator DNA profiles in physical contact/assault cases involving trace perpetrator/victim cellular admixtures.     

Are ‘pseudonymised’ data always personal data? Implications of the GDPR for administrative data research in the UK

There has naturally been a good deal of discussion of the forthcoming General Data Protection Regulation. One issue of interest to all data controllers, and of particular concern for researchers, is whether the GDPR expands the scope of personal data through the introduction of the term ‘pseudonymisation’ in Article 4(5). If all data which have been ‘pseudonymised’ in the conventional sense of the word (e.g. key-coded) are to be treated as personal data, this would have serious implications for research. Administrative data research, which is carried out on data routinely collected and held by public authorities, would be particularly affected as the sharing of de-identified data could constitute the unconsented disclosure of identifiable information.Instead, however, we argue that the definition of pseudonymisation in Article 4(5) GDPR will not expand the category of personal data, and that there is no intention that it should do so. The definition of pseudonymisation under the GDPR is not intended to determine whether data are personal data; indeed it is clear that all data falling within this definition are personal data. Rather, it is Recital 26 and its requirement of a ‘means reasonably likely to be used’ which remains the relevant test as to whether data are personal. This leaves open the possibility that data which have been ‘pseudonymised’ in the conventional sense of key-coding can still be rendered anonymous. There may also be circumstances in which data which have undergone pseudonymisation within one organisation could be anonymous for a third party. We explain how, with reference to the data environment factors as set out in the UK Anonymisation Network's Anonymisation Decision-Making Framework.     

The pedagogy of legal reasoning: democracy,discourse and community

Learning legal reasoning is a central part of any undergraduate law degree and remains a threshold concept: one which is vital for any law student to grasp, but which is often difficult to explain. It is a form of reasoning which is very distinctive to the discipline. This article explores the applicability of learning theories typically used to ground pedagogy in higher education to the specific task of teaching legal reasoning. Constructivist or experiential theories of learning are widely used in higher education, but they need to be used with a clear focus on the specific nature of legal reasoning, which does not fit neatly within the assumptions about learning which underpin many constructivist approaches. Situated learning theories, which place emphasis on the role of the community in constructing knowledge, can also be of value. However, steps need to be taken to avoid replicating the hierarchy of the legal community within educational communities. Overall, the pedagogy of legal reasoning needs to pay attention to the specific nature of legal reasoning, to enable students to access the discourse of the legal community to use as a model, and to take students seriously as members of that community.     

A new international order: Lessons of Kosovo

An examination of how the worsening AIDS epidemic in Africa has been used to construct a simplistic and racial view of Africa in the West as a continent that is homogenous, backward, sexually permissive, unpredictable and in need of control, advice and help from outside.     

Steven Chaffee and the Future of Political Communication Research

This article discusses four basic characteristics of Steven Chaffee's research: going beyond the "common research wisdom," careful explication of concepts, avoiding unsubstantiated charges against the media, and investigation of the social aspects of communication. The evolution of political socialization research is used as an example of how these characteristics have strengthened Chaffee's contribution to that area and to the larger field of political communication. It is argued that the future of this field would benefit from emulation of these characteristics. Continuing problems of political communication research are noted, and various emerging problems are discussed.