The adverse outcomes seen in the Women's Health Initiative (WHI) 1 were mainly due to an over-dosage of hormones in a relatively elderly population. However, fundamental differences exist between conjugated equine estrogens and 17 beta estradiol and between medroxyprogesterone acetate and natural progesterone. It is likely that these differences also contributed to the adverse outcomes in WHI, ...

We study the power and limitations of posted prices in multi-unit markets, where agents arrive sequentially in an arbitrary order. We prove upper and lower bounds on the largest fraction of the optimal social welfare that can be guaranteed with posted prices, under a range of assumptions about the designer’s information and agents’ valuations. Our results provide insights about the relative pow...

We study the problems of scheduling jobs, with different release dates and equal processing times, on two types of batching machines. All jobs of the same batch start and are completed simultaneously. On a serial batching machine, the length of a batch equals the sum of the processing times of its jobs and, when a new batch starts, a constant setup time s occurs. On a parallel batching machine,...

Earlier studies have shown variation among experimental attempts to establish whether human monozygotic twins that are genetically identical also have identical individual scents. In none of the cases were the dogs able to distinguish all the individual scents of monozygotic twins living in the same environment if the scents were presented to them separately. Ten specially trained police German...

The compare package provides functions for comparing two R objects for equality, while allowing for a range of “minor” differences. Objects may be reordered, rounded, or resized, they may have names or attributes removed, or they may even be coerced to a new class if necessary in order to achieve equality. The results of comparisons report not just whether the objects are the same, but also inc...

communication). Appleyard (1968) showed that babies born after an anoxic delivery developed a significant lowering of the Thrombotest at 24 hours compared with those who were not anoxic during delivery. Possibly the lowered Thrombotest is associated with liver damage due to hypoxia; however, more probably the infants had some degree of disseminated intravascular coagulation resulting from the m...