359,117 research outputs found
Yet Another Event-driven Process Chain - Modelling Workflow Patterns with yEPCs
The 20 workflow patterns proposed by van der Aalst et al. provide a comprehensive benchmark for comparing process modelling languages. In this article, we discuss workflow pattern support of Event-Driven Process Chains (EPCs). Building on this analysis, we propose three extensions to EPCs in order to provide for workflow pattern support. These are the introduction of the so-called empty connector; inclusion of multiple instantiation concepts; and a cancellation construct. As both the latter are inspired by YAWL, we refer to this new class of EPCs as Yet Another Event-driven Process Chain (yEPC). Furthermore, we sketch how a transformation to YAWL can be used to specify the semantics of yEPCs
Individual and Group Dynamics in Purchasing Activity
As a major part of the daily operation in an enterprise, purchasing frequency
is of constant change. Recent approaches on the human dynamics can provide some
new insights into the economic behaviors of companies in the supply chain. This
paper captures the attributes of creation times of purchase orders to an
individual vendor, as well as to all vendors, and further investigates whether
they have some kind of dynamics by applying logarithmic binning to the
construction of distribution plot. It's found that the former displays a
power-law distribution with approximate exponent 2.0, while the latter is
fitted by a mixture distribution with both power-law and exponential
characteristics. Obviously, two distinctive characteristics are presented for
the interval time distribution from the perspective of individual dynamics and
group dynamics. Actually, this mixing feature can be attributed to the fitting
deviations as they are negligible for individual dynamics, but those of
different vendors are cumulated and then lead to an exponential factor for
group dynamics. To better describe the mechanism generating the heterogeneity
of purchase order assignment process from the objective company to all its
vendors, a model driven by product life cycle is introduced, and then the
analytical distribution and the simulation result are obtained, which are in
good line with the empirical data
Sustainable Development Report: Blockchain, the Web3 & the SDGs
This is an output paper of the applied research that was conducted between July 2018 - October 2019 funded by the Austrian Development Agency (ADA) and conducted by the Research Institute for Cryptoeconomics at the Vienna University of Economics and Business and RCE Vienna (Regional Centre of Expertise on Education for Sustainable Development).Series: Working Paper Series / Institute for Cryptoeconomics / Interdisciplinary Researc
Sustainable Development Report: Blockchain, the Web3 & the SDGs
This is an output paper of the applied research that was conducted between July 2018 - October 2019 funded by the Austrian Development Agency (ADA) and conducted by the Research Institute for Cryptoeconomics at the Vienna University of Economics and Business and RCE Vienna (Regional Centre of Expertise on Education for Sustainable Development).Series: Working Paper Series / Institute for Cryptoeconomics / Interdisciplinary Researc
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