The age at death assessment in a multi-ethnic sample of pelvic bones using nature-inspired data mining methods

Recently published studies showed that age assessment methods are population specific. Authors analyse the senescence changes in pubic symphysis and sacro-pelvic surface of a pelvic bone using data mining methods. The multi-ethnic data set consists of 956 adult individuals ranging from 19 to 100 years of age derived from 9 different populations with known age and sex. The results show that accurate and reliable age assessment is possible to three age classes (less than 30, 30-60, 60 and more). The study confirms that population specificity of the methods exists and the variable "sex" is not important in age classification.     

Injustice in School and Students’ Emotions,Well-Being,and Behavior: A Longitudinal study

School can be regarded as an important factor in the development of children’s values and attitudes. Given this great importance of justice experiences for students’ development, this study aimed at examining the influence of perceived injustice in school on students’ emotions, well-being, and behavior with an experimental longitudinal design. In total, 196 students participated in this study and came to the university with their classes to receive extra teaching once a week for six consecutive weeks. To manipulate justice perceptions, a scenario of arbitrary privilege was chosen to lead students of the experimental group to experience injustice from a beneficiary perspective. We found that students in the experimental group reported higher well-being and a higher appreciation of the opportunity to learn than the control group did. Additionally, they showed an increase in justice-related negative emotions over time; that is, they expressed more of a bad conscience and stronger feelings of anger the more they became aware of their privilege. This study shows that even subtle experiences of injustice in school can have an impact on students’ outcomes. These results are discussed with regard to practical implications.     

Gender,Ethnicity, and Education as Privileges: Exploring the Generalizability of the Existential Guilt Reaction

Two cross-sectional questionnaire studies were conducted to replicate and extend previous research on the existential guilt reaction. In Study I, gender was considered as a privilege. Male student participants (N = 141) were confronted with the low proportion of women in high-ranking positions and asked to appraise this situation. Self-reported behavior, behavioral intentions, and appeal to authorities aimed at advancing equal opportunities for both genders served as criterion variables. Path analyses were performed to explore the correlation structure among the variables. Self-reported behavior depended most strongly on behavioral intentions and on belief in control. Behavioral intentions depended most strongly on existential guilt. This effect accords to previous existential guilt research. Ethnicity and education were considered as privileges in Study II. Privileged Paraguayan students (N = 80) were confronted with the disadvantageous living conditions of Indians and Campesinos. They were asked to appraise the situation. Behavioral intentions and appeal to authorities directed at improving the living conditions of Indians and Campesinos served as criteria. As in Study I, existential guilt was the strongest predictor of behavioral intentions. Study II revealed the role of values in the process of existential guilt and prosocial behavior. This is a new research finding. Indirect effects of the two values of universalism and benevolence on behavioral intentions were obtained. The effect of universalism was mediated by existential guilt and moral outrage, the effect of benevolence was mediated by injustice and existential guilt. Tradition had a negative indirect effect on behavioral intentions. This effect was mediated by justification of deprivation and probably means that adherence to tradition eases the justification of traditionally existing social inequalities in a society.     

Verfassungsschranken und die Privatisierung öffentlicher Dienstleistungen im internationalen Vergleich

This paper examines the impact of constitutional barriers on the privatisation of public utilities in 21 OECD-countries between 1980 and 2009. We present new and improved indicators for privatisation and constitutional barriers. Three empirical findings stand out: First, national privatisation trajectories differ across both countries and sectors. Second, there is a significant cross-national variation in terms of constitutional provisions related to public utilities which, thirdly, constitute important impediments to privatisation.     

Strategic entry deterrence and terrorism: Theory and experimental evidence

Using a two stage rent-seeking framework, we present a simple model of strategic entry/terrorism deterrence and test the model using laboratory experiments. Our contest success function highlights the potential for strategic spillovers. The theory illustrates that, relative to a cooperative outcome, negative externalities lead to over-spending on deterrence and positive externalities lead to under-spending on deterrence. Our experimental results are broadly consistent; subjects in the negative externality treatment had higher expenditures. In contrast to theoretical predictions, participation decisions, while primarily driven by the probability of winning a contest, were influenced by a subject’s ability to participate in multiple contests.     

Variability of cannabinoid findings in blood

Cannabis products have been administered for many centuries; today, cannabis is the most widely used illegal drug all over the world. Nevertheless, the interpretation of cannabis findings in blood with regard to consumption behaviour and/or estimating the elapsed time since the last cannabis use is still a very challenging task. A wide variation of pharmacokinetic parameters has been observed even in experimental studies. Different chemical structures of precursors, smoking dynamics, pyrolysis of phytocannabinoids and frequency of drug use affect the amount of THC absorbed. Polymorphic enzymes are involved in phase-I-metabolism of THC. Pharmacological effects of other cannabinoids or medication on the pharmacokinetics of THC have not yet been studied in detail. Hydrolysis of cannabis conjugates may occur during storage of blood samples and processing of specimens for analysis; knowledge on the stability of cannabinoids in forensic specimens is still poor. Whether determination of cannabinoid conjugates may be useful is a matter of further consideration. At present, the broad variation of pharmacokinetic parameters and the limiting factors discussed in the present paper should be taken into account when using data from experimental studies for interpretation of analytical results in forensic case work.     

Computer assisted modeling of ethyl sulfate pharmacokinetics

For 12 volunteers of a drinking experiment the concentration–time-courses of ethyl sulfate (EtS) and ethanol were simulated and fitted to the experimental data. The concentration–time-courses were described with the same mathematical model as previously used for ethyl glucuronide (EtG). The kinetic model based on the following assumptions and simplifications: a velocity constant k_form for the first order formation of ethyl sulfate from ethanol and an exponential elimination constant k_el. The mean values (and standard deviations) obtained for k_form and k_el were 0.00052 h^?1 (0.00014) and 0.561 h^?1 (0.131), respectively. Using the ranges of these parameters it is possible to calculate minimum and maximum serum concentrations of EtS based on stated ethanol doses and drinking times. The comparison of calculated and measured concentrations can prove the plausibility of alleged ethanol consumption and add evidence to the retrospective calculation of ethanol concentrations based on EtG concentrations.     

The European Parliament Elections of June 2004: Still Second-Order?

A quarter of a century ago the first series of European Parliament elections were characterised as second-order national elections. Much has changed since, which might have had an impact upon this diagnosis. In this article the central assumptions and predictions of the second-order elections model are restated and evaluated against the outcome of the 2004 European Parliament election and a post-election survey. Surprisingly enough, the findings confirm the persisting second-order nature of EP elections for Western Europe. Matters look very different, however, in the eight new Central and East European member countries.     

The Janus Face of Europeanisation: Explaining Cross-Sectoral Differences in Public Utilities

Although policymakers have sought to liberalise network-based utilities, a more detailed look at privatisation pathways reveals remarkable sector-specific differences. This article examines why efforts to privatise public utilities have differed so greatly in the telecommunications, postal, and railway sectors. By estimating probit models, it is demonstrated that firm characteristics and sector-specific EU integration account for cross-sectoral differences in privatisation. More specifically, governments dispose of the most efficient firms first to maximise revenues from privatisation sales with low political costs. Regulations at the European level pushed governments to privatise their national postal providers, while privatisation in the telecommunications sector is a global trend. In the railway sector, exceptional clauses and regulations have decelerated privatisation.