In this paper an algorithm is described for the localization of individual sperm whales in situations where several near-by animals are simultaneously vocalizing. The algorithm operates on time-difference of arrival (TDOA) measurements observed at sensor pairs and assumes no prior knowledge of the TDOA-whale associations. In other words, it solves the problem of associating TDOAs to whales. The...

We study a Mach-Zehnder interferometer fed by a coherent state in one input port and vacuum in the other. We explore a Bayesian phase estimation strategy to demonstrate that it is possible to achieve the standard quantum limit independently from the true value of the phase shift and specific assumptions on the noise of the interferometer. We have been able to implement the protocol by using par...

BACKGROUND Bridging the research-practice gap is an important research focus in continuing care facilities, because the population of older adults (aged 65 years and over) requiring continuing care services is the fastest growing demographic among countries in the Organisation for Economic Co-operation and Development (OECD). Unlicensed practitioners, known as health care aides, provide the maj...

OF THESIS Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science Optical Science and Engineering The University of New Mexico Albuquerque, New Mexico May, 2007

AIMS To examine the demographic and workplace risk factors of serious falls and associated economic burden in Canadian health care workers. METHODS Fall injury data during 2005-2008 from a workplace health and safety surveillance system were linked with workers' compensation claims and payroll records. The costs for treatment and wage loss and days lost for accepted time-loss claims were calc...

OBJECTIVES To identify work factors that predict persistent fatigue in nurses' aides. METHODS The sample comprised 5547 Norwegian nurses' aides, not on leave when they completed a mailed questionnaire in 1999. Of these, 4645 (83.7%) completed a second questionnaire 15 months later. The outcome measure was the occurrence of persistent fatigue, defined as having felt "usually fatigued" or "alwa...