Victimization, survival and the impunity of forced exile: A case study from the Rwandan genocide

A case study of a Rwandan genocide survivor and a review of the cultural and historical contexts of that crime are presented. The case study examines not only the events that occurred during the genocide, but also the post-victimization reflections of the respondent. It is argued that neither survival nor victimization in genocide are bounded events, but a set of processes. Survival during genocide is accomplished only by navigating through a series of lethal threats. Victimization is perceived to continue after the genocide through the impunity granted to perpetrators.     

Delimitation of the time of death by immunohistochemical detection of thyroglobulin

To improve the possibilities to delimit the time of death after longer laytime it was examined if this is possible by immunohistochemical detection of thyroglobulin. The results show that in our examination material the colloid and the follicular cells of the thyroid glands of up to 5-day-old corpses produce a positive immunoreaction towards thyroglobulin in all cases whereas none of the corpses older than 13 days show such a reaction. This means that in case of a negative immunoreaction the time of death can be assumed to lie more than 6 days before the autopsy. The fact that a negative immunoreaction occurrs consistently after 13 days leads to the conclusion that when thyroglobulin has been stained in a specimen, the death of the respective person must lie a maximum of 12 days earlier, whereby these time-limits may change in considerably different surrounding conditions.     

Factors associated with escalation and problematic approaches toward public figures

Detailed comparison of factors associated with abnormal approach to the prominent and with escalation from communication to approach has not hitherto been undertaken. This partially reflects the failure of individual studies to adopt compatible terminologies. This study involves a careful dissection of six public figure studies, three involving U.S. politicians, two Hollywood celebrities, and one the British Royal Family. Common findings were unearthed across six headings. Approachers were significantly more likely to exhibit serious mental illness, engage in multiple means of communication, involve multiple contacts/targets, and to incorporate into their communication requests for help. They were significantly less likely to use threatening or antagonistic language in their communications, except in those cases involving security breaches. These results emphasize the importance of integrating mental health findings and preventive measures into risk management. Approach should not be regarded as a single behavioral category and has multiple motivations. Future studies should adopt standard terminology, preferably taken from the general stalking research.     

Differentiation of epithelial cell types by cell diameter

Genital swabs play an important role in cases of alleged sexual assault. The aim of our study was to see if epithelial cells from the vagina, glans penis, or mouth could be distinguished on the basis of size. Vaginal swabs were taken from 12 women in different phases of their menstrual cycles; penile swabs were taken from 5 men, and mouth swabs were taken from 6 men and 6 women. For each swab, a sample was smeared across a microscope slide and allowed to dry. The dried epithelial samples were then viewed without any further processing with a "SteReoLumar.V12" stereo microscope. The microscope slide surfaces were divided into grids and all single epithelial cells whose contours could be clearly distinguished were photographed. The maximum diameter for each photographed cell was digitally determined using the Axiovision software. In total, 995 vaginal epithelial cells, 211 penile epithelial cells, 329 male oral epithelial cells, and 525 female oral epithelial cells were measured. Menstrual cycle phase did not affect vaginal epithelial cell diameter. The mean vaginal epithelial cell diameter was 63.95 microm (min. = 28.08 microm, max. = 108.06 microm, s = 11.50 microm). The mean penile epithelial cell diameter was 39.24 microm (min. = 28.38 microm, max. = 51.02 microm, s = 4.84 microm). The diameter of oral epithelial cells hardly differed for both sexes, although the female cells were, on the whole, slightly larger. On the basis of these results, it is not possible to conclude that epithelial cells of less than a certain diameter found in the assessment of a vaginal swab must be of penile origin. It is also not possible to usefully distinguish vaginal epithelial cells from male or female oral epithelial cells on the basis of the diameter. However, finding epithelial cells with a diameter distinctly greater than 50 microm in a penile swab sample suggests the presence of vaginal or oral epithelial cells. Epithelial cells examined with the presented method can be used without restrictions for further examinations, such as single-cell DNA analysis after single-cell picking with the micromanipulator developed by Aura Optik (Jena).     

Optimization and validation of CEDIA drugs of abuse immunoassay tests in serum on Hitachi 912

Due to sensitive limits of detection of chromatographic methods and low limit values regarding the screening of drugs under the terms of impairment in safe driving (§ 24a StVG, Street Traffic Law in Germany), preliminary immunoassay (IA) tests should be able to detect also low concentrations of legal and illegal drugs in serum in forensic cases. False-negatives should be avoided, the rate of false-positive samples should be low due to cost and time. An optimization of IA cutoff values and a validation of the assay is required for each laboratory. In a retrospective study results for serum samples containing amphetamine, methylenedioxy derivatives, cannabinoids, benzodiazepines, cocaine (metabolites), methadone and opiates obtained with CEDIA drugs of abuse reagents on a Hitachi 912 autoanalyzer were compared with quantitative results of chromatographic methods (gas or liquid chromatography coupled with mass spectrometry (GC/MS or LC/MS)). Firstly sensitivity, specificity, positive and negative predictive values and overall misclassification rates were evaluated by contingency tables and compared to ROC-analyses and Youden-Indices. Secondly ideal cutoffs were statistically calculated on the basis of sensitivity and specificity as decisive statistical criteria with focus on a high sensitivity (low rates of false-negatives), i.e. using the Youden-Index. Immunoassay (IA) and confirmatory results were available for 3014 blood samples. Sensitivity was 90% or more for nearly all analytes: amphetamines (IA cutoff 9.5 ng/ml), methylenedioxy derivatives (IA cutoff 5.5 ng/ml), cannabinoids (IA cutoff 14.5 ng/ml), benzodiazepines (IA cutoff >0 ng/ml). Test of opiates showed a sensitivity of 86% for a IA cutoff value of >0 ng/ml. Values for specificity ranged between 33% (methadone, IA cutoff 10 ng/ml) and 90% (cocaine, IA cutoff 20 ng/ml). Lower cutoff values as recommended by ROC analyses were chosen for most tests to decrease the rate of false-negatives. Analyses enabled the definition of cutoff values with good values for sensitivity. Small rates of false-positives can be accepted in forensic cases.     

Parental warmth amplifies the negative effect of parental hostility on dating violence

Past research has documented the positive association between parental hostility and offspring involvement in intimate partner violence. Researchers, practitioners, and parents typically adopt the standpoint that parental warmth may counter these negative lessons. However, Straus and colleagues argue that parents foster IPV to the extent that they teach their child that verbal and physical aggression are a normal and legitimate component of loving relationships. A strict interpretation of social learning theory would suggest that these lessons are more, not less, likely to occur when parental hostility is interspersed with displays of affection. The present study tests this idea using data from 2,088 undergraduate students from a large university in the Southeast. Consistent with Straus' arguments, findings suggest that, rather than attenuating the negative effects of hostility, supportive interactions seem to amplify the probability that offspring will emulate aggressive behaviors in their own romantic relationships. The same is true for the effects of harsh parenting for women. It seems that the best way parents can avoid contributing to their child's chances of being in a violent dating relationship is to eschew family interaction involving verbal and physical aggression.     

The demand for transparency: An empirical note

By encouraging socially wasteful rent seeking and corruption, natural resources abundance might not be a blessing but a country’s curse. A recent attempt to impede these practices of corruption with theft is the Extractive Industries Transparency Initiative (EITI). The purpose of this organization is to verify and fully publish company payments and government revenues from oil, gas, and mining. Using a probit estimation technique the paper analyses empirically the political and socio-economic factors which determine a country’s participation in EITI, which can be interpreted as revealed willingness to reform.