A Wait to Be Found

The concert queueing game: to wait or to be late

We introduce the concert (or cafeteria) queueing problem: A finite but large number of customers arrive into a queueing system that starts service at a specified opening time. Each customer is free to choose her arrival time (before or after opening time), and is interested in early service completion with minimal wait. These goals are captured by a cost function which is additive and linear in...

Neonatal death suspected to be from sepsis was found to be kernicterus with G6PD deficiency.

We cared for a term male infant born to Burmese immigrants. At about 24 hours a total serum bilirubin (TSB) was 9.3 mg/dL, and phototherapy was begun. It was stopped 48 hours later, with a TSB of 10.9 mg/dL, and he was discharged from the hospital with an appointment for a repeat TSB check 48 hours later. A few hours before the appointment he became listless and apneic, and his parents took him...

Online Train Disposition: To Wait or Not to Wait?

We deal with an online problem arising from bus/tram/train disposition problems. In particular, we look at the case in which the delay is unknown and the vehicle can only wait in a station so as to minimize the passengers’ waiting time. We present deterministic polynomial-time optimal algorithms and matching lower bounds for several problem versions. In addition, all lower bounds also apply to ...

Suicide: where can help be found?

Quantum: may be a new-found messenger in biological systems.

Current studies on biological communications mainly focus on chemical signals. Since organisms are extremely complex, different kinds of signals may exist in the process of cell communication. The most probable candidate for alternative forms of organism communications is electromagnetic radiation, as many experiments have confirmed that electromagnetic radiation widely exists in cells, tissues...