Quantifying confinement effects in ice impact loads

Ships and offshore structures, that encounter ice floes, tend to experience loads with varying pressure distributions within the contact patch. The effect of the surrounding ice adjacent to that which is involved in the contact zone has an influence on the effective strength. This effect has come to be called confinement. A methodology for quantifying ice sample confinement is developed, and the confinement is defined using two non-dimensional terms; a ratio of geometries and an angle. Together these terms are used to modify force predictions that account for increased fracturing and spalling at lower confinement levels. Data developed through laboratory experimentation is studied using dimensional analysis. The characteristics of dimensional analysis allow for easy comparison between many different load cases; provided the impact scenario is consistent. In all, a methodology is developed for analyzing ice impact testing considering confinement effects on force levels, with the potential for extrapolating these tests to full size collision events.

The Blame Game: Perceptions of Blame, Responsibility and Seriousness in Cyberbullying

Cyberbullying is gaining increasing media attention. Victims may be reluctant to report such bullying due to the perception by others that these victims somehow play a role in their own victimization. This perception, often referred to as victim blame, has been commonly researched in child sexual abuse, rape and hate crime cases, but it has not really been examined in cases of cyberbullying. To assess victim blame, 241 participants were recruited and asked to read a scenario of cyberbullying that involved either a 14-year-old or a 20-year old victim. Perpetrator gender and victim gender were also manipulated. It was found that perceptions regarding the scenario were influenced by the gender of the perpetrator and the age of the victim. This was particularly the case when perceptions of the seriousness of the crime and the necessity for legal action were assessed.