Canonical, squeezed and fermionic coherent states in a right quaternionic Hilbert space with a left multiplication on it

Using a left multiplication defined on a right quaternionic Hilbert space, we shall demonstrate that various classes of coherent states such as the canonical coherent states, pure squeezed states, fermionic coherent states can be defined with all the desired properties on a right quaternionic Hilbert space. Further, we shall also demonstrate squeezed states can be defined on the same Hilbert space, but the noncommutativity of quaternions prevents us in getting the desired results.Comment: Conference paper. arXiv admin note: text overlap with arXiv:1704.02946; substantial text overlap with arXiv:1706.0068

Performance of Port Facilities During the Northridge Earthquake

During the January 17, 1994, Northridge earthquake, two of the Port of Los Angeles\u27 facilities called Berths 121-126 and Pier 300 sustained moderate damage. Lateral displacement of dikes up to five inches and liquefaction of hydraulic fills were observed. Several geotechnical analyses from simplified SPT -based method to sophisticated fully-coupled analyses are presented. Observed lateral displacements are predicted reasonably well by the fully-coupled analysis procedure and an intermediate analysis procedure which incorporates some results from a fully-coupled analysis in to a simplified Newmark-type deformation analysis. The potential for higher pore pressure generation underneath the dike compared to a level ground is also discussed

A Systems Approach for Design, Construction, and Maintenance of Bridges and Adjacent Roadways

ODOT SPR Item Number 2307Previous research projects funded by the Oklahoma Department of Transportation, Federal Highway Administration, and other agencies have revealed that many problems faced by bridges, such as expansion joints closing, are related to how the interfaces between a bridge and the adjacent roadway are designed, constructed, and maintained. Design, construction, repair, and maintenance guidelines to alleviate some of the problems related to the interactions between bridges and adjacent roadways are developed. The recommendations are based on published literature, adopted regional practices, field observations, field monitoring, and computer simulations. Pressure relief joints for excessive pavement pressure were installed and monitored at three bridges. The efficacy of ultra-high performance concrete (UHPC) as a possible solution for bridge expansion joint headers was also studied. To better understand the behavior of tall bridge approach embankments constructed on soft soils, computer simulations were performed using the finite element software PLAXIS 2D. To ensure satisfactory bridge performance, it is necessary to put pressure relief joints in rigid pavements leading up to bridges. When bridge embankments are built on soft foundation soils, and especially for taller embankments, the potential for lateral deformation of the embankment should be considered. A water barrier should be incorporated in the abutment backfill design to keep infiltrated water from short circuiting the backfill drainage system. UHPC is a viable alternative for joint headers and has excellent durability. Additional recommendations for conventional, semi-integral, and integral bridges are also presented