Modern enterprises increasingly use the work ow paradigm to prescribe how business processes should be performed. Processes are typically modeled as annotated activity graphs. We present an approach for a system that constructs process models from logs of past, unstructured executions of the given process. The graph so produced conforms to the dependencies and past executions present in the log...

This paper describes a work ow speci cation language namely MFDL and the implementation of its scheduler in a distributed environment Distributed nature of the scheduling provides failure resilience and increased performance Since work ow scheduling and management is highly a ected from the way the work ow is speci ed a work ow speci cation language should be e cient to prevent the problems of ...

It has been over ten years since the rst work ow product was introduced. Despite the large number of work ow vendors and research e orts all over the world, despite all the rosy predictions about the work ow market, and despite all the hype about the work ow technology, work ow is still far from pervasive. This paper tries to understand the situation from a technical point of view, focusing on ...

The concept of picture archiving and communication systems (PACS) is now widely accepted in the medical community. In order to bring the concept to reality, however, innovative designs and implementations are needed. One such design is a ber optic star based PACS. This PACS network is based on a multiplexed passive star local area network with wavelength-division multiplexing to provide separat...

emission trading is one of the famous mechanisms under kyoto protocol to control environmental pollution. the aim of this paper is to design a strategic supply chain network under emission trading scheme with inclusion of stochastic parameters and budget limitation. demand and price of carbon credits are considered as the important stochastic parameters influencing the supply chain network. in ...

To realize effective knowledge sharing in teamwork, this paper proposes a knowledge ¯ow model for peer-to-peer knowledge sharing and management in cooperative teams. The model consists of the concepts, rules and methods about the knowledge ¯ow, the knowledge ¯ow process model, and the knowledge ¯ow engine. A reference model for coordinating the knowledge ¯ow process with the work¯ow process is ...

The de®nition and maintenance of work¯ow processes have become important tasks for enterprises as work¯ow management systems (WFMS) are systematically applied to critical business processes. In order to simplify the management and usage of work¯ow processes and to integrate with other applications, a good modeling method is essential. The WFCP-net (work¯ow-net based on colored Petri net) is an ...

This paper presents a new forward-in-time advection method for nearly incompressible ow, MU, and its application to an adaptive multilevel ow solver for atmospheric ows. MU is a modi cation of Leonard et al.'s (1993) UTOPIA scheme. MU, like UTOPIA, is based on third-order accurate semiLagrangian multidimensional upwinding for constant velocity ows. For varying velocity elds, MU is a second-orde...

semilinear stochastic evolution equations with multiplicative l'evy noise are considered‎. ‎the drift term is assumed to be monotone nonlinear and with linear growth‎. ‎unlike other similar works‎, ‎we do not impose coercivity conditions on coefficients‎. ‎we establish the continuous dependence of the mild solution with respect to initial conditions and also on coefficients. ‎as corollarie...

This paper studies the contribution of in‡ow and out‡ow rates to the unemployment dynamics in the long-run. I …nd that in the U.S., both in‡ow and out‡ow rates contribute signi…cantly to variation in the long-run trend of the unemployment rate. In‡ow and out‡ow rates account for roughly similar proportions of overall unemployment variability in the long-run. Keywords: Unemployment dynamics; Job...