General parameters characterizing single particle inclusive distributions of shower particles and their dependence on the multiplicity are discussed in [Pi] interactions at 200 Gev. The qualitative comparison of data presented with predictions of several popular models for hadron nucleus collisions are performed.

Cities and Their Vital Systems asks basic questions about the longevity, utility, and nature of urban infrastructures; analyzes how they grow, interact, and change; and asks how, when, and at what cost they should be replaced. Among the topics discussed are problems arising from increasing air travel and airport congestion; the adequacy of water supplies and waste treatment; the impact of new technologies on construction; urban real estate values; and the field of "telematics," the combination of computers and telecommunications that makes money machines and national newspapers possible.