Even Distribution and Spherical Ball-Packing is a book about the continuous uniform distribution or rectangular distribution. A family of symmetric probability distributions such that for each member of the family, all intervals of the same length on the distribution’s support are equally probable.
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Ying-chien Chang has a bachelor’s degree in physics from Taiwan Normal University and a master’s degree in mathematics from Ohio University, Athens, Ohio. She worked as a junior high and high school teacher for twenty years.
After retiring from teaching she spent over ten years studying paleontology and geology. She joined many expeditions, such as digging for dinosaur fossils in Mongolia, China, and many places in the Rocky Mountains of the United States and Canada. She worked on the human origin question and did fieldwork in South Africa. She participated in wildlife conservation efforts in Hawaii, Venezuela, Peru, China, and Australia.
Also during her retirement she hiked on six continents (not Antarctica, a great regret!). She has hiked in almost every corner of the western states of the United States and Canada.
She lived a very simple life. With a pack of crackers, an apple, and a bottle of water in her backpack, she could hike all day long to enjoy nature. Her hobbies include hiking (no doubt), swimming, gardening, sewing, and listening to classical music.
She is survived by two wonderful sons, Dennis and Andy Wen, and three brilliant grandchildren, Druid, Haley, and Brittany.
