Changes in the U.S. domestic airline route system have increased competition between international gateways. To assist in understanding this phenomenon, a system of models that predicts airline passenger flows resulting from different airline gateway hubbing strategies has been developed. The calibrated rnodels predict baseline passenger Mows quite accurately. The system was then used to projec...

Supply chain management techniques can help hospitals become more efficient and improve patient care at the same time. However, in order to be effective, we need a comprehensive understanding of both the system idiosyncrasies and the supply chain processes. This paper details a four step framework that is motivated by ideas from the risk management domain. Specifically, we propose to map risk f...

A stochastic interest rate generator is a valuable actuarial tool. The parameters that specify a stochastic model of interest rates can be adjusted to make the model arbitrage-free, or they can be adjusted to accommodate an individual investor's subjective views. The arbitrage-free settings of the parameters must be used when pricing streams of interest-rate-contingent cash flows, for example, ...

Report of Independent Auditors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2 Consolidated Balance Sheets as of March 31, 2002 and 2003 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3 Consolidated Statements of Operations for the Years ended March 31, 2001, 2002 and 2003 . . . . . . . . . . . ...

It is notoriously difficult to measure the causal impact of foreign aid on the economy. The “micro-macro paradox” (Paul Mosley 1986) renders it impossible to add up the effects of individual aid projects, since foreign aid is fungible. Thus, researchers are left to conduct cross-country analyses to capture the effect of aid on economic growth and other outcomes net of the recipient governments’...

extended abstract abstract pressure management is an effective method for water demand management. for evaluation of the effects of pressure changes on leakage level of water networks, the favad equation is usually used. however, in this equation, exponent of pressure parameter (n) needs to be determined. for estimation of n, either some information about the leak opening is necessary or networ...

Methods: We surveyed 262 physicians working in 15 internal medicine practices affiliated with 2 large urban teaching hospitals (response rate, 64%). We asked physicians about systems they used and the amount of time they spent managing test results. We asked them to report delays in reviewing test results and their overall satisfaction with their management of test results. We also asked physic...

A mechanistic and dynamic model was developed to represent the physiological aspects of liquid dynamics in the rumen and to quantitatively predict liquid flow out of the reticulorumen (RR). The model is composed of 2 inflows (water consumption and salivary secretion), one outflow (liquid flow through the reticulo-omasal orifice (ROO), and one in-and-out flow (liquid flux through the rumen wall)...

We investigate a firm’s joint decision to hold cash and to hedge in the presence of financial constraints. The predictions are tested using a sample of manufacturing firms. We confirm the existing evidence of a positive sensitivity of cash holdings to cash flow for financially constrained firms. More importantly, we find a positive sensitivity of hedging to cash flow for constrained firms and, ...