Heat Induced Changes to Dental Resin Composites: A Reference in Forensic Investigations?*

The objective was to investigate color change and surface damage in dental resin composites exposed to high temperatures over different time intervals for comparative purposes. Samples were prepared using two resins - Z100(R) (R1) and Charisma (R2), heated at the following temperatures: 200 degrees C, 400 degrees C, 600 degrees C, 1000 degrees C, for 15, 30 and 45 min (n = 104 for each resin sample). Color (DeltaE) and brightness (DeltaL) changes were analyzed by spectrophotometry using the CIE Lab system and surface changes by Scanning Electron Microscopy (SEM). R1 showed more intense color changes after heat exposure than R2. DeltaL values were found to be the best parameter for evaluation of light and color change. A biphasic pattern after thermal exposure was detected, from dark brown to light white. SEM showed more intense alterations in R2 than in R1. These results indicate that the parameters observed in both resins are useful as a guide in forensic analyses.     

Forensic DNA against wildlife poaching: Identification of a serial wolf killing in Italy

The recent expansion of the Italian wolf population through the Apennine and western Alps, after centuries of contractions, is causing conflicts with human activities leading to a rise in poaching or illegal killings. Here we show how molecular population genetics has been used to identify a suspect serial wolf killer. We analysed DNA extracted from a necklace made of ten presumed wolf canine teeth, confiscated in 2008 to a man living in the northern Italian Apennine (Liguria Region). Individual genotypes were determined using 12 unlinked autosomal microsatellites (STRs), mtDNA control-region sequences, a male-specific ZFX/ZFY restriction-site and three Y-linked STRs. Results indicate that the teeth belonged to six different individuals (three males and three females), which were assigned to the Italian wolf population with p > 0.90 by Bayesian procedures. One of these genotypes matched with the genetic profile of a male wolf previously found-dead and already non-invasively sampled in the same area. Another genotype matched with that of a female wolf non-invasively sampled twice in the same area 1 year before. These data are being used as forensic genetic evidence in the ongoing criminal trial against the suspect serial wolf killer.     

Sudden Death Secondary to an Undiagnosed B‐Cell Lymphoma of the Hypopharynx and Infiltration of the Inferior Constrictor Muscle

The aim of this presentation was to share an uncommon form of sudden death, suffered by a 64‐year‐old woman, due to a mechanical obstruction of hypopharynx by an undiagnosed B‐cell lymphoma, infiltrating the inferior pharyngeal constrictor muscle. A forensic approach by means of scene investigation, circumstantial data collection, autopsy, and histological and toxicological investigations led to conclude that the cause of death was asphyxia, correlated with B‐cell lymphoma of the hypopharynx. The autopsy examination highlighted the presence of a wall thickening, infiltrating, and projecting into the hypopharynx lumen. The histological analysis showed the essential finding of a B‐cell lymphoma of the hypopharynx, diffusely infiltrating the inferior pharyngeal constrictor muscle. To conclude, this case demonstrates once more that in the absence of specific data, a thorough forensic investigation including autopsy, histological examination, and circumstantial data collection is mandatory to reach a correct cause of death.     

Exploring the Link between Mentoring Program Structure & Success Rates: Results from a National Survey

Though mentoring has emerged as a promising and low-cost intervention for at-risk youth in recent years, the scientific knowledge base on the topic remains under-developed. The current study augments the knowledge base on youth mentoring by analyzing programmatic elements of mentoring programs situated in or adjacent to the juvenile justice system that are predictive of participant success. Poisson regression was utilized to analyze data collected through a national mentoring community saturation survey. Findings indicated that mentoring programs that require more frequent interaction and sustain relationships for longer timeframes realize higher success rates. Similarly, the use of formal mentor training was also observed as indicative of the use of evidence based practices and higher success rates, though likely beyond the logistical and fiscal reach of some local mentoring initiatives. The implications for further research and the mentoring community are discussed.     

The Influence of the EU and the ECHR on ‘Parliamentary Sovereignty Regimes’: Assessing the Impact of European Integration on the British and Swedish Judiciaries

The paper analyses the consequences of European integration processes upon the judicial systems of the so‐called ‘parliamentary sovereignty regimes’, focusing on the British and Swedish judiciaries. The aim is to understand if the influences coming from European integration, favouring the expansion of domestic judicial power, have prevailed, or the traditional distrust of such countries in judicial power has prevented the empowerment of the domestic courts. The influences on the judicial systems are evaluated distinguishing judicial capacity, judicial attitudes and judicial independence. The paper argues that the political relevance of judges has strongly increased. However, while European integration has deeply transformed the formal means at disposal of judges, because of political and judicial culture the changes in actual judges' behaviour have been much more limited. Moreover, the paper highlights some unexpected ways in which European integration can affect the domestic political systems (eg favouring certain legislative reforms or legal principles).     

Vṛṣabhadeva’s Sphuṭākṣarā on Bhartṛhari’s Metaphysics: Commentarial Strategy and New Interpretations

Although somewhat neglected in the scholarly debate, V??abhadeva’s commentary (known as Sphu?āk?arā or Paddhati, possibly 8th c. CE) on Vākyapadīya’s first chapter, offers a remarkable analysis of Bhart?hari’s views on metaphysics and philosophy of language. Vākyapadīya’s first four kārikās deal with ontological issues, defining the key elements of Bhart?hari’s non-dualistic edifice such as the properties of the unitary principle, its powers, the role of time and the ontological status of worldly objects. V??abhadeva’s interpretation of the kārikās in question is intriguing and seems to be guided by the urgency to find a solution to the riddle which every non-dualistic theory has to face: how is it possible to postulate a unitary principle of reality when reality is cognized as multiple? In accomplishing the task V??abhadeva proposes various solutions (some of them based on concepts which are hardly detectable in Vākyapadīya and appear close to the ones propounded in certain trends of Advaita Vedānta), finally suggesting an explanation which, focusing on the pragmatic aspect of language, is altogether consistent with Bhart?hari’s theoretical picture.     

Local Politics Online: The Influence of Presumed Influence on Local Politicians’ Online Communication Activities in Germany

Abstract

How extensively local politicians use online media to communicate with others and the factors that influence their online activities have rarely been examined. In particular, it is unknown whether local politicians use online media more extensively when they believe that online media has a strong political influence on others. To examine this, a standardised survey among German local politicians was conducted (n = 608). The results showed the following: The stronger the politicians perceive the influence of facebook and Twitter on journalists to be, the more extensively they spread information via these social media networks. However, the presumed influences on the public or on other politicians do not affect those online activities. Thus, local politicians apparently do not pursue a disintermediation strategy – they do not try to bypass journalism by directly addressing the public. Rather, journalists seem to be an important target group for local politicians’ online communication efforts.