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- Matthew J. Drake, David W. Pentico, Carl Toews
- Mathematical and Computer Modelling
- 2011

- Megan J. Donahue, Mandy Karnauskas, Carl Toews, Claire B. Paris, Craig A Radford
- PloS one
- 2015

Many species of reef fishes form large spawning aggregations that are highly predictable in space and time. Prior research has suggested that aggregating fish derive fitness benefits not just from mating at high density but, also, from oceanographic features of the spatial locations where aggregations occur. Using a probabilistic biophysical model of larval… (More)

- Fadil Santosa, Carl Toews
- 2007

We are interested in determining the position of an electrode within a bounded homogeneous region B. Across this region we apply three orthogonal voltage potentials, and for each potential collect data corresponding to voltages at the probe. Were the fields linear, the positions of the probe could be read directly from the voltage data. Unfortunately, the… (More)

- David W. Pentico, Carl Toews, Matthew J. Drake
- IJISSCM
- 2014

This paper describes two heuristics for the basic economic order quantity and economic production quantity with partial backordering that use the time between orders and the percentage of demand filled from stock as the decision variables. Tests of the heuristics on a set of problems generated by using different values for six situational characteristics… (More)

The GPS Real-Time Ionospheric Monitoring System (GRIMS) has been operational at the Millstone Hill radar in Massachusetts since 1991 and at the FPS-85 radar in Florida since 1994. GRIMS employs GPS derived estimates of the total electron content (TEC) to provide real-time ionospheric corrections to radar measurements, incorporating data from a single… (More)

- C. TOEWS, J. KERN, H. M. KINGSTON
- 2009

Speciated isotope dilution mass spectrometry is a technique that uses mass spectrometer readings to determine the species-specific isotopic profile of a chemical element in solution. The problem admits several approaches, each with its own computational quirks. In our view, matrix methods are attractive because they are conceptually clear, easy to… (More)

- Bryan Nelsonand, Carl Toews
- 2009

This paper explores practical and numerical facets of a position registration scheme first proposed in [1]. The goal of the registration is to use voltage measurements to determine the shape of a bounded homogenous region embedded within an unknown and inhomogenous medium. We assume that a probe with one or more electrodes can access and be moved about… (More)

- Carl Toews
- 2016

Inquiry based pedagogies have a strong presence in proof-based undergraduate mathematics courses, but can be difficult to implement in courses that are large, procedural, or highly computational. An introductory course in statistics would thus seem an unlikely candidate for an inquiry based approach, as these courses typically steer well clear of proof,… (More)

A significant extension of the classic EOQ model is the assumption that realized demand decreases if customers are forced to backorder. To capture the way this decrease depends on the waiting time, different functional forms have been proposed, ranging from the simple (e.g., constant or linear forms) to the complex (e.g., exponential or rational forms.)… (More)

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