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“even when every agent prefers to live in a mixed-race neighborhood, almost complete segregation emerges as individual decisions accumulate” Here is the link to the source. keywords: [white flight] [psychology] [sociology] [checkerboard model] [tipping model] [mathematical analysis]

article: The engineering properties of cohesionless materials during vibration

Here is the link. keywords: [Digital Repository] [Iowa State University] [Thomas Leslie Youd] [Civil Engineering Commons] [microfilmed exactly as received] [Soil Engineering] [dirt] [Signature was redacted for privacy.] [shear strength of granular soils] [critical void ratio] [vibrational effects on shear strength] [vibrational effects on density] [densification] [density] [test apparatus and procedure] [apparatus and materials] [suggestions … Continue reading article: The engineering properties of cohesionless materials during vibration