Delta-sigma modulation, a pulse density modulation scheme used in analog-to-digital and digital-to-analog conversions
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Delta Sigma Sorority, a collegiate sorority founded in 1895 at Tufts University and later absorbed by Alpha Omicron Pi
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Cooper attended Centenary Junior College (now Centenary College of New Jersey) in Hackettstown, where she was a member of the Delta Sigma Sigma sorority and graduated in 1938 at ceremonies attended by Governor of New Jersey A. Harry Moore.
Jastram belonged to the Museum Societies of both San Francisco and Oakland, Delta Sigma Chi Architectural Honor Society, National Trust for Historic Preservation, The Big "C" Society, and was a life member of the Mechanics' Institutes.
On November 6, 1913, B.J. Palmer was initiated into the brotherhood of Delta Sigma Chi.
Delta Sigma Delta is the oldest and largest international professional dental fraternity.
Cole has provided presentation and empowerment workshops for businesses and institutions, including Speaking of Women's Health, Kraft, the Saralee Corporation, Cornell University, the National Urban League, National Action Network, Jack & Jill of America, Delta Sigma Theta and more.
Sigma Gamma Chi : an LDS Church fraternity founded in 1936 as Lambda Delta Sigma that spun off the LDS sorority of the same name
Lambda Delta Sigma (LDS Church) : a sorority founded in 1960 for members of The Church of Jesus Christ of Latter-day Saints (LDS Church); now replaced with the LDS Student Association at all universities except the University of Utah
Omega Delta Sigma's also provides proceeds to such organizations as Wounded Warrior Project, Support The Troops, and Toys for Tots.