In order to evaluate the importance of newly-formed minerals in the premature deterioration of Iowa highway concrete, a two-phase study was undertaken. In the first phase, we performed petrographic and SEM/EDAX analyses to determine chemical and mineralogical changes in the aggregate and cement paste of samples taken from Iowa concrete highways that showed premature deterioration. In the second...

This paper proposes a novel beamforming technique to form an arbitrary-shaped cell for the high-altitude platforms (HAPs) mobile communications. The new technique is based on pattern summation of individual low-sidelobe, narrow beams which constitute the desired cell pattern weighted by an amplitude correcting function. The new cell pattern can be adapted to cover the main highways forming worm...

This paper examines some of the issues and controversies that arise when facilities with perceived noxious environmental, social, and economic effects (LULUs) locate in communities. It develops a taxonomy of LULU types and describes some potential economic and social effects of five specific kinds of LULUs, including: (1) interstate highways, (2) large dams, (3) medium and maximum security pris...

This paper examines some of the issues and controversies that arise when facilities with perceived noxious environmental, social, and economic effects (NIMBYs) locate in communites. Five specific categories of NIMBYs are examined, including: (1) interstate highways, (2) large dams, (3) medium and maximum security prisons, (4) commercial nuclear power plants, and (5) gambling casinos. The paper ...