Metrological framework for selecting morphological characters to identify species and estimate developmental maturity of forensically significant insect specimens

Accurate age estimates of immature necrophagous insects associated with a human or animal body can provide evidence of how long the body has been dead. These estimates are based on species-specific details of the insects’ aging processes, and therefore require accurate species identification and developmental stage estimation. Many professionals who produce or use identified organisms as forensic evidence have little training in taxonomy or metrology, and appreciate the availability of formalized principles and standards for biological identification. Taxonomic identifications are usually most readily and economically made using categorical and qualitative morphological characters, but it may be necessary to use less convenient and potentially more ambiguous characters that are continuous and quantitative if two candidate species are closely related, or if identifying developmental stages within a species. Characters should be selected by criteria such as taxonomic specificity and metrological repeatability and relative error. We propose such a hierarchical framework, critique various measurements of immature insects, and suggest some standard approaches to determine the reliability of organismal identifications and measurements in estimating postmortem intervals. Relevant criteria for good characters include high repeatability (including low scope for ambiguity or parallax effects), pronounced discreteness, and small relative error in measurements. These same principles apply to individuation of unique objects in general.

Key points

• Metrological rigour can increase in forensic entomology by selecting measurements based on their metrological qualities.
• Selection of high-quality features for morphological identification of organisms should consider these criteria: (1) pronounced discreteness of features (minimising group overlap or maximizing interval); (2) high repeatability of assessment (such as symmetrical width rather than asymmetrical length); (3) small relative error in measurement (selecting the physically largest continuous rigid feature for measurement).
• These metrological principles also apply to individuation of unique objects in general.

     

Public capital stock and interstate variations in manufacturing efficiency

This study focuses on the role of public capital stock in contributing to interstate differences in productive efficiency in manufacturing. Our motivation is to assess the role of public capital as a source of persistent regional variations in efficiency, and thus determine if public infrastructure policies might reasonably be expected to alter the competitive environment of a state's manufacturing sector. We use a stochastic frontier production function model, explicitly incorporating infrastructure capital, to examine the relative performance of the aggregate manufacturing sector across states and over time. We calculate an index of productive efficiency and estimate the determinants of statewide variations in it. These results show that variations in per capita infrastructure stocks significantly affect manufacturing efficiency. Considering the behavior of public capital as both a direct and an indirect input furthers our understanding of the role of infrastructure and its implications for regional economic development policies.     

Evaluation of Suspected Counterfeit Pharmaceutical Tablets Declared to Contain Controlled Substances Using Handheld Raman Spectrometers

This study describes the performance of handheld Raman devices for determining whether suspect pharmaceutical tablets declared to contain controlled substances were consistent with authentic (CWA) or not consistent with authentic (NCWA) tablets using a simple, rapid, field-friendly method capable of being used by nonexperts. Twenty-five authentic products and 84 known NCWA tablets were examined using three “parent” devices for a total of 327 analyses. On average, the parent devices yielded a true pass rate of 100%, a true fail rate of 98.4%, a false pass rate of 1.6%, and a false fail rate of 0%. The methods/libraries were then transferred to 13 identical “daughter” devices, which were used to examine 10 suspect finished dosage forms in duplicate (six known NCWA tablets and four authentic tablets) for a total of 260 measurements. On average, the daughter devices had a true pass rate of 100%, a true fail rate of 95.5%, a false pass rate of 4.5%, and a false fail rate of 0.0%. These data demonstrate that the parent–daughter electronic transfer method was successful, which permits the ability to develop methods in the laboratory that can be seamlessly pushed out to field devices. The methods can then be used to (i) prioritize samples for additional testing using other more time-consuming laboratory-based techniques needed to detect and quantify active ingredients and (ii) help support the interdiction of dangerous tablets at ports of entry, thereby preventing them from reaching the supply chain.     

An agenda for the study of Public Administration in Developing Countries

Developing nations demand a different scholarly approach in the field of public administration. We advance an agenda for research that stands on four pillars. First, in the absence of easily accessible data scholars of developing world public administration must assemble it for themselves. Second, building and testing theory plays a paramount role because researchers face limited information. Third, in developing countries, multi‐national and non‐governmental organizations are often crucial and must be considered in studying public administration. Fourth, given the novelties and ambiguities researchers face, qualitative information must be integrated throughout the research process. Our article—and the articles in this volume—constitute a call for developing country research to contribute to the study of public administration writ large, informing our understanding of both developing and developed states.     

Rethinking Measures of Psychological Agency: A Study on the Urban Fringe of Bamako

Attempts to measure psychological agency have drawn on social psychology scholarship. Nonetheless, it is well documented that the Euro/American psychology paradigm is challenged by its tendency to universalise its theories. This raises a challenge for development scholars trying to measure the psychological domain; especially regarding understanding what the psychological domain may mean to people outside the Western liberal tradition. We examine the use of theoretical measures of psychological agency against local concepts of psychological agency from a neighbourhood on the urban fringe of Bamako. We conclude that there is no clear association between local and theoretical measures of psychological agency and therefore there is a need to include local and theoretical measures in the study of agency.     

The Public Management of Risk: The Case for Deliberating among Worldviews

This article argues that the public management of risk faces inherent "wicked issue" problems which are further accentuated in the context of the contemporary regulatory state. It is suggested that in order to overcome these limitations and inevitable trade-offs, there needs to be a more conscientious effort in setting out distinct components of any public management of risk, which should be considered and discussed through the lens of distinct worldviews contrasting interpretations and solutions, as well as potential "black-spots." It is only by acknowledging limitations of any one strategy and by considering plural solutions that there is less likelihood of disappointment when dealing with crises and disasters.     

Facilitating industrial symbiosis programmes in developing countries: reflections from Gauteng,South Africa

This viewpoint reflects on how to improve the process of introducing facilitated industrial symbiosis programmes (FISPs) to small and medium enterprises (SMEs) in developing countries. Although FISPs are a long-established industrial practice, their formal introduction to SMEs in developing countries has only recently begun, mostly through support from international development agencies. Based partly on anecdotal evidence from Gauteng, South Africa, we identify six key questions which need to be addressed to improve the process of facilitating FISPs.     

Early Adolescent Gender Development: The Differential Effects of Felt Pressure from Parents,Peers, and the Self

Journal of Youth and Adolescence - Most empirical research examining youth’s gender development measures felt pressure to conform to gender norms using a composite value of felt pressure from...     

Power and changing modes of governance in the euro crisis

Which European Union actors are most powerful in the governance of the euro crisis? The euro crisis has reignited the classic debate between intergovernmentalists, who tend to stress the coercive power of dominant member states in the European Council, and supranationalists, who maintain that through the use of institutional power, the Commission, and the European Central Bank turned out the “winners” of the crisis. This article argues that euro crisis governance is best understood not just in terms of one form of power but instead as evolving through different constellations of coercive, institutional, and ideational power that favored different EU actors over the course of the crisis, from the initial fast‐burning phase (2010–2012), where the coercive and ideational power of Northern European member states in the European Council was strongest, to the slow‐burning phase (2012–2016), when greater influence was afforded supranational actors through the use of ideational and institutional power.