LOS ANGELES—Njdeh F. “Jack” Yaghoubian, a civil engineer known for his pioneering work in earthquake protection systems, died on May 29, 2025. He was 91. Born on August 8, 1934, in Tehran, Iran, Yaghoubian was the son of Hagob and Arashalous Hagobian (Yaghoubian), both survivors of the Armenian Genocide who met in an orphanage. Yaghoubian’s …