Examining the causal effects of exposure to violence on crime among youth involved in the justice system: Experienced, witnessed, and experienced-witnessed violence.

Previous studies on exposure to violence lack a nuanced understanding of the causal effects of different exposure types on offending behaviors. This study, drawing on Pathways to Desistance Study (PDS) data tracking 1354 adjudicated youths aged 14-18 over 7 years, explores the contemporaneous (cross-sectional), acute (after 1 year), enduring (after 3 years), and long-term (after 6 years) causal effects of violence exposure on property and violent offending. The sample, predominantly male (86%), consisted of White (20%), Black (42%), and other (38%) individuals. The generalized propensity score is used to match unbalanced covariates across multiple exposure types, namely noninvolved (n = 392), witnessed (n = 577), experienced (n = 31), and experienced-witnessed violence (n = 305). Results demonstrate the contemporaneous, acute, enduring, and long-term effects of violence exposure on both violent and property offending, with varying durations and strengths across exposure types. The most pronounced risk effects are immediate, diminishing over time and potentially reversing in the long term as youth transition into adulthood. Among exposure types, experienced-witnessed violence exhibits the most potent effects on offending, followed by witnessed violence and then experienced violence-a pattern consistent across the observed time points. Noteworthy is the finding that the impact of violence exposure is more pronounced for violent offending, diminishing more rapidly compared to the effects on property offending.

Thin Film Encapsulation for LCP-Based Flexible Bioelectronic Implants: Comparison of Different Coating Materials Using Test Methodologies for Life-Time Estimation.

Liquid crystal polymer (LCP) has gained wide interest in the electronics industry largely due to its flexibility, stable insulation and dielectric properties and chip integration capabilities. Recently, LCP has also been investigated as a biocompatible substrate for the fabrication of multielectrode arrays. Realizing a fully implantable LCP-based bioelectronic device, however, still necessitates a low form factor packaging solution to protect the electronics in the body. In this work, we investigate two promising encapsulation coatings based on thin-film technology as the main packaging for LCP-based electronics. Specifically, a HfO2-based nanolaminate ceramic (TFE1) deposited via atomic layer deposition (ALD), and a hybrid Parylene C-ALD multilayer stack (TFE2), both with a silicone finish, were investigated and compared to a reference LCP coating. T-peel, water-vapour transmission rate (WVTR) and long-term electrochemical impedance spectrometry (EIS) tests were performed to evaluate adhesion, barrier properties and overall encapsulation performance of the coatings. Both TFE materials showed stable impedance characteristics while submerged in 60 °C saline, with TFE1-silicone lasting more than 16 months under a continuous 14V DC bias (experiment is ongoing). The results presented in this work show that WVTR is not the main factor in determining lifetime, but the adhesion of the coating to the substrate materials plays a key role in maintaining a stable interface and thus longer lifetimes.