Microbial metagenome profiling using amplicon length heterogeneity-polymerase chain reaction proves more effective than elemental analysis in discriminating soil specimens

The combination of soil's ubiquity and its intrinsic abiotic and biotic information can contribute greatly to the forensic field. Although there are physical and chemical characterization methods of soil comparison for forensic purposes, these require a level of expertise not always encountered in crime laboratories. We hypothesized that soil microbial community profiling could be used to discriminate between soil types by providing biological fingerprints that confer uniqueness. Three of the six Miami-Dade soil types were randomly selected and sampled. We compared the microbial metagenome profiles generated using amplicon length heterogeneity-polymerase chain reaction analysis of the 16S rRNA genes with inductively coupled plasma optical emission spectroscopy analysis of 13 elements (Al, B, Ca, Cu, Fe, K, Mg, Mn, Na, P, S, Si, and Zn) that are commonly encountered in soils. Bray-Curtis similarity index and analysis of similarity were performed on all data to establish differences within sites, among sites, and across two seasons. These data matrices were used to group samples that shared similar community patterns using nonmetric multidimensional scaling analysis. We concluded that while chemical characterization could provide some differentiation between soils, microbial metagenome profiling was better able to discriminate between the soil types and had a high degree of reproducibility, therefore proving to be a potential tool for forensic soil comparisons.     

Economic globalisation,the perceived room to manoeuvre of national governments,and electoral participation: Evidence from the 2001 British General Election

Recent macro-level research argues that economic globalisation negatively affects electoral turnout by constraining the leeway of national governments and thereby rendering elections less meaningful to voters. This article analyses the link between perceptions of the national government's room to manoeuvre and turnout on the individual level. Drawing on the 2001 British General Election, it is shown that citizens who believe that economic globalisation leaves the national government with less influence on the economy are less likely to report to have voted. Further findings also support the proposed theoretical model according to which room to manoeuvre perceptions affect turnout via views on the importance of elections and matter specifically for citizens that tend towards the left side of the left-right scale.     

恩格斯思维与存在同一性观点辨析——兼与俞吾金教授商榷

思维与存在同一性问题是哲学基本问题的重要方面,我们认为,马克思恩格斯是在坚持唯物主义前提下,以承认思维与存在既有同质性又有异质性为基础的同一性,而不是俞吾金教授所说的,恩格斯是坚持黑格尔同质性基础上的思维与存在同一性。     

At the Polls

ABSTRACT

In this study, the authors attempt to add to existing knowledge on voter psyche during elections by examining the roles of voter concern and voters' desire to “keep up to date,” both of which have hitherto not been studied in this context. The analysis of data collected during a specific election in Australia reveals significant relationships with several well known psychological factors. The authors discuss these findings in the context of political marketing and furnish directions for future research.     

The discipline of difference: Ethnolinguistic heterogeneity and corporal punishment

The minority threat hypothesis contends that growth in the size of a given minority population along with the ensuing competition for social and political resources will threaten existing social power arrangements. Regarding punishment specifically, the hypothesis states that dominant groups will support coercive measures to keep minority populations sufficiently oppressed. Using the minority threat hypothesis as our theoretical foundation, we posit that the more heterogeneous a population, the more social control will be necessary to maintain societal equilibrium for those in power. In effect a more personal, physical, and visceral response to criminal behavior will be deemed necessary in countries with high levels of fractionalization. This more focused form of social discipline will manifest as corporal punishment. Comparing modalities of punishment against varying population characteristics, we find that countries with higher levels of ethnic, linguistic, and religious fractionalization are more likely to employ corporal punishment against criminal offenders.     

Fixing failures of U.K. electoral management

Concerns about electoral malpractice have been raised in many democracies in recent years because of errors made in the administration of elections by local election officials (LEOs). This article argues that adopting appropriate policy instruments to manage LEOs is an under-explored method for improving election administration and reducing electoral malpractice. The article provides a case study of the use of performance benchmarking schemes in the UK 2008–2010. Semi-structured interviews were undertaken with 74 LEOs from 41 organisations subject to newly devised performance indicators. The research demonstrates that performance benchmarking can encourage learning amongst local electoral officials and strengthen central control over them.     

Déjà vu All Over Again: Investigating Temporal Continuity of Adolescent Victimization

An important theoretical issue in the study of criminal victimization focuses on state dependence or the extent to which prior victimization causally affects subsequent victimization. Framing this issue are two conceptual arguments that posit divergent predictions regarding the impact of past victimization. While “victim labeling” suggests that the experience of prior victimization increases victimization in the future, “victim rationality” suggests that past victimization decreases subsequent victimization. To date there has been little longitudinal research that explicitly evaluates these competing viewpoints. In response, the current study uses panel data from a sample of adolescents to assess the merit of these opposing theoretical frameworks. Against this theoretical backdrop, it is shown that prevailing strategies for the analysis of panel data—random-effects and fixed-effects—produce erroneous results that add confusion to the debate regarding the nature of state dependence processes in criminal victimization. Drawing from advances in econometrics, two estimators that can overcome the problems that plague more traditional panel data models are used to provide a test of the competing victimization perspectives. Results from those analyses suggest support for the thesis that past victimization increases subsequent victimization, but the magnitude of this positive relationship is more modest than is indicated by analytic models that have been utilized in prior longitudinal victimization research.

The new electoral power brokers: macro and micro level effects of ‘born-free’ South Africans on voter turnout

The emergence of a born-free South African generation holds significant implications for voter turnout. At the macro level, the youth bulge has changed aggregate turnout patterns, supporting Franklin’s [(2004). Voter turnout and the dynamics of electoral competition in established democracies since 1945. New York, NY: Cambridge University Press] argument that demographics shifts produce changes in aggregate political behaviour even when individuals do not change their behaviour. At the micro level, born-free South Africans exhibit attitudinal and cognitive differences from their older, partisan-led counterparts when deciding to vote, lending some support to Dalton’s [(1984). Cognitive mobilization and partisan dealignment in advanced industrial democracies. The Journal of Politics, 46(1), 264–284] cognitive mobilisation thesis.