Recent evidence indicates an overall retreat from marriage. Cohabitation has contributed to this trend as cohabiting unions are increasingly not resulting in marriage. As an initial step in understanding why some cohabiting couples do not marry, we examine factors associated with cohabitors= marriage expectations. We focus particularly on the effects of socioeconomic status and race/ethnicity b...

The manning of a ship is a major driver of total ownership cost. The Government Accounting Office (GAO) states that “the cost of the ship’s crew is the largest expense incurred over the ship’s lifetime” [1]. This cost is largely determined by decisions made during concept design, which may include significant new support costs ashore. Consequently, reliable manpower estimates and related design...

81. General .................................................. 8101 83. Masters and officers ........................... 8301 85. Pilots ...................................................... 8501 87. Unlicensed personnel ......................... 8701 89. Small vessel manning ......................... 8901 91. Tank vessel manning standards ...... 9101 93. Great Lakes pilotage ....................

With rapid flood extent mapping capabilities, Synthetic Aperture Radar (SAR) images of river inundation prove to be very relevant to operational flood management. In this context, a recently developed method provides distributed water levels from SAR images. Furthermore, in view of improving numerical flood prediction, a variational data assimilation method (4D-var) using such distributed water...

In this research a method to calibrate a river hydraulic model (HEC-RAS) using ground-based measurements of an observed flash flood is presented. Applications of the ground truth measurement of flood water depths and flooded areas within a reach of Neka River in Northern of Iran are discussed. The model is calibrated using the Manning's roughness coefficient based on 200-year flood event that t...

Counterion condensation is a basic feature of 2D electrostatics exhibited by highly charged rodlike polymers such as DNA. In the framework of the Poisson Boltzmann equation with salt, we show that such a polymer of radius a attracts a condensate of thickness RM=A(axi)1/2 where xi is the Debye length and A depends weakly on the polymer charge density q0. To leading order in 1/ln(xi/a), we derive...