Ziskind has been involved in some 150 other justice projects since he became interested in the late 1960s in correcting the deplorable environments in American prisons. A founding partner of STV/Silver & Ziskind, an engineering, planning and design group that employs more than 1,000 people in this country and abroad, he is committed to social reform through improving the quality of life for inmates. He has been sought out by institutions and governments around the world and has received numerous honors and awards for planning and designing innovative and humane justice facilities.     Ziskind believes that his recent work on Tzalmon prison in Israel, which was featured in The New Yorker last October, is his best. "The building is not the punishment . . . incarceration is," he said. Tzalmon embodies "all the issues--from natural light to controlled movement." An inmate's cell, with bookshelves, earth tones and light entering through a sizable window, looks like a spartan dormitory room, which is not surprising, since the medium-security prison is based on the concept of a campus. Beyond jailing inmates, Ziskind says, Tzalmon aims to reduce the stresses of incarceration to improve the rehabilitative program and advance an inmate's education. "If there is going to be rehabilitation, they can do it in this facility," he said.     Another of Ziskind's correctional projects, New York's Rikers Island, includes replacing some of the older structures "like in the old James Cagney movies" with mini malls, which guarantee less inmate movement and are safer and easier to operate. But Ziskind says he's not happy with the way the industry is going generally. Because most prison violence occurs when inmates come together at, say, the commissary or chapel, he believes the delivery of services in future prisons will happen in the cell on TV screens: "Press a button, you get education. You want the commissary, push home shopping. The inmate is getting more and more isolated. There's no re-socialization."     Even though he had no design background before attending Pratt Institute for his architecture degree, Ziskind says design came easily to him because Colby's "whole liberal arts program--psychology, sociology, economics--kind of molded me to do what I do." A veteran of projects in areas as diverse as Indonesia, Guatemala and Puerto Rico, he advocates a year's study abroad as a requirement for architecture school--and for undergraduates as well.     Until two years ago Ziskind held an adjunct professorship at John Jay College, where he taught master's degree candidates from fire and police departments how to keep buildings, from jails to offices, safe and secure. And he and Paul Silver are co-authors of a book, Institutional Architecture. "I'm most proud of my three grandchildren, though," Ziskind adds while mulling over "a seven-year retirement plan" that could culminate in his return to teaching.