Breaking barriers: a psychobiography of Siya Kolisi from a sociocultural perspective.

Siyamthanda (Siya) Kolisi OIG (1992-) is the first black captain of the South African rugby team (Springboks) in its 128 years of existence. The Springboks have long been associated with Afrikaner people and a history of racism. Siya had to navigate a tumultuous upbringing in an environment characterised by various issues such as socioeconomic inequalities, high unemployment among Black people, and lack of resources.

Searching for Meaning in the Life of Ellen Johnson-Sirleaf: A Call to Meaningful Responses to Tragedies.

Ellen Johnson-Sirleaf, born in 1938, is Africa's first elected female head of state. She navigated stressful and traumatic events, including bullying, domestic abuse, persecution, a civil war, witnessing the effects of genocide and navigating a patriarchal system. Nonetheless, Johnson-Sirleaf's determination established her as a global icon who played a significant role in women's empowerment.

A novel edge gradient distance metric for automated evaluation of deformable image registration quality.

Purpose: To develop a new registration quality metric, based on the distance between image edges, for automated evaluation and comparison of DIR algorithms.

Methods: Canny filter is used to create binary gradient images from input images to be compared. A small subregion of one binary image is translated relative to the other.