Contemporary work ow management systems are driven by explicit process models, i.e., a completely speci ed work ow design is required in order to enact a given work ow process. Creating a work ow design is a complicated time-consuming process and typically there are discrepancies between the actual work ow processes and the processes as perceived by the management. Therefore, we have developed ...

Increasing atmospheric CO 2 is driving major environmental changes in the ocean, such as an increase average ocean temperature, a decrease pH (ocean acidification or OA), and number severity of extreme climatic events (e.g., anomalous temperature heatwaves). Uncertainty exists capacity for species to withstand these stressors occurring concomitantly. Here, we tested whether acclimation history ...

Nick Bontis is Assistant Professor Strategic Management, DeGroote School of Business, McMaster University, Hamilton, Ontario, Canada ([email protected]). Michael Fearon is a Research Associate, DeGroote School of Business, McMaster University, Hamilton, Ontario, Canada. Marissa Hishon is a Research Associates, DeGroote School of Business, McMaster University, Hamilton, Ontario, Canada. Abstra...

A large number of problems in transportation, communications and manufacturing can be modelled as network ow problems. In these problems one seeks to nd the most e cient, or optimal, way to move ow (e.g. materials, information, buses, electrical currents) on a network (e.g. postal network, computer network, transportation grid, power grid). Many of these optimization problems are special classe...

When a Hamiltonian system has a \Kinetic + Potential" structure, the resulting ow is locally a geodesic ow. But there may be singularities of the geodesic structure, so the local structure does not always imply that the ow is globally a geodesic ow. In order for a ow to be a geodesic ow, the underlying manifold must have the structure of a unit tangent bundle. We develop homological conditions ...

A derivation of the Dirac equation in ‘3 + 1’ dimensions is presented based on a master equation approach originally developed for the ‘1+ 1’ problem by McKeon and Ord. The method of derivation presented here suggests a mechanism by which the work of Knuth and Bahrenyi on causal sets may be extended to a derivation of the Dirac equation in the context of an inference problem.

The optic ow eld is deened as preserving the intensity along ow-lines. Due to singularities in the image at xed time, poles are created in the optic ow eld. In this paper we describe the generic types of ow singularities and their generic interaction over time. In a general analytic ow eld, normally the topology is characterised by the points where the ow vanish again subdivided into repellers,...

Gradient methods are widely used in the computation of optical ow. We discuss extensions of these methods which compute probability distributions of optical ow. The use of distributions allows representation of the uncertainties inherent in the optical ow computation, facilitating the combination with information from other sources. We compute distributed optical ow for a synthetic image sequen...

We introduce the maximumskew-symmetric ow problem which generalizes ow and matching problems. We develop a theory of skew-symmetric ows that is parallel to the classical ow theory. We use the newly developed theory to extend, in a natural way, the blocking ow method of Dinitz to the skew-symmetric ow case. In the special case of the skew-symmetric ow problem that corresponds to cardinality matc...