OBJECTIVE Digit preference bias has previously been described in a number of different clinical settings. The paper aimed to assess whether digit preference bias affects the recording of the time patients arrive and leave emergency departments. METHOD An observational study of 137 emergency departments in England and Wales was conducted. Each department was asked to submit details of the time...

This paper develops a novel positive model for departure time choice under road pricing and uncertainty at the individual levels, and analyzes the consequent system-level dynamic properties. The proposed modeling framework avoids assumptions of substantial rationality, and focuses on how individuals actually make decisions. Bayesian learning, knowledge updating, search, and decisionmaking under...

This study is an investigation into the roles of wildfire and changing agricultural practices in controlling the inter-decadal scale trends of suspended sediment production from semi-arid mountainous rivers. In the test case, a decreasing trend in suspended sediment concentrations was found in the lower Salinas River, California between 1967 and 2011. Event to decadal scale patterns in sediment...

Numerical simulation of bubble growth during pool boiling under the influence of low frequency vibration was performed to understand the influence of common vibrations such as those induced by wind, highway transportation, and nearby mechanical devices on the performance of thermal systems that rely on boiling. The simulations were done for saturated R123 boiling at 277.6 K with a 15 K wall sup...

We propose an estimator for the CDF G of the sojourn time in a steady-state M/G/∞ queueing system, when the available data consists of the arrival and departure epochs alone, without knowing which arrival corresponds to which departure. The estimator is a generalization of an estimator proposed by Brown (1970), and is based on a functional relationship between G and the distribution of the time...

The efficient scheduling of departure runways is an important part of surface operations planning, with the goal of increasing the throughput of airports. Departure scheduling is a complex problem that needs to address the needs of diverse stakeholders including the airport operators, air traffic control and the airlines. The challenge lies in optimizing different objective functions such as ma...

Delays caused by uncertainty in weather forecasts can be reduced by improving traffic flow management decisions. This paper presents a methodology for traffic flow management under uncertainty in convective weather forecasts. An algorithm for assigning departure delays and reroutes to aircraft is presented. Departure delay and route assignment are executed at multiple stages, during which, upda...