Process modeling

About: Process modeling is a research topic. Over the lifetime, 11639 publications have been published within this topic receiving 223996 citations. The topic is also known as: process simulation.

Numerical modeling of friction stir welding process: a literature review

Abstract: This survey presents a literature review on friction stir welding (FSW) modeling with a special focus on the heat generation due to the contact conditions between the FSW tool and the workpiece. The physical process is described and the main process parameters that are relevant to its modeling are highlighted. The contact conditions (sliding/sticking) are presented as well as an analytical model that allows estimating the associated heat generation. The modeling of the FSW process requires the knowledge of the heat loss mechanisms, which are discussed mainly considering the more commonly adopted formulations. Different approaches that have been used to investigate the material flow are presented and their advantages/drawbacks are discussed. A reliable FSW process modeling depends on the fine tuning of some process and material parameters. Usually, these parameters are achieved with base on experimental data. The numerical modeling of the FSW process can help to achieve such parameters with less effort and with economic advantages.

A methodology for business process redesign: experiences and issues

Abstract: Business process redesign (BPR) refers to the endeavour to augment organizational performance by improving the efficiency, effectiveness and adaptability of key business processes This article describes a flexible and extensible methodological framework (called PADM) for BPR which has been developed on the firm basis of several years of practical experience PADM is an eclectic methodology It has been strongly influenced by a number of methodological approaches, most notably soft systems methodology and sociotechnical systems design This article outlines the main features of PADM and describes three recent case studies which show the range and variety of BPR initiatives A number of issues are taken up in the discussion The need for a flexible and adaptable methodology is stressed given the broad spread of studies subsumed under the BPR rubric The dangers of process automation are illustrated and the need for a sociotechnical perspective is underlined Business process redesign entails organization change Many of our case studies fell short of their anticipated impact; various explanations are discussed (politics, culture, information technology inertia) The paper concludes by outlining several fruitful areas for further research and describes a number of aspects of our current work

Abstractions in Process Mining: A Taxonomy of Patterns

Abstract: Process mining refers to the extraction of process models from event logs. Real-life processes tend to be less structured and more flexible. Traditional process mining algorithms have problems dealing with such unstructured processes and generate spaghetti-like process models that are hard to comprehend. One reason for such a result can be attributed to constructing process models from raw traces without due pre-processing. In an event log, there can be instances where the system is subjected to similar execution patterns/behavior. Discovery of common patterns of invocation of activities in traces (beyond the immediate succession relation) can help in improving the discovery of process models and can assist in defining the conceptual relationship between the tasks/activities. In this paper, we characterize and explore the manifestation of commonly used process model constructs in the event log and adopt pattern definitions that capture these manifestations, and propose a means to form abstractions over these patterns. We also propose an iterative method of transformation of traces which can be applied as a pre-processing step for most of today's process mining techniques . The proposed approaches are shown to identify promising patterns and conceptually-valid abstractions on a real-life log. The patterns discussed in this paper have multiple applications such as trace clustering, fault diagnosis/anomaly detection besides being an enabler for hierarchical process discovery.

Using A Positivist Case Research Methodology To Test Three Competing Theories-In-Use Of Business Process Redesign

Abstract: We test three practitioner theories-in-use of business process redesign derived from the business process reengineering (BPR) literature using a positivist case study of a U.S. company that undertook BPR. The evidence refutes the domi

On the Duality of Information-Centric and Activity-Centric Models of Business Processes

Abstract: Most of the work in modeling business processes is activity-centric. Recently, an information-centric approach to business process modeling has emerged, where a business process is modeled as the interacting life cycles of information entities. The benefits of this approach are documented in a number of case studies. The goal of this paper is to formalize the information-centric approach and derive the relationships between the two approaches. We do this by formally defining the notion of a business entity from first principles and using this definition to derive an algorithm that generates an information-centric process model from an activity-centric model. We illustrate the two models using a real-world business process and provide an analysis of the respective strengths and weaknesses of the two modeling approaches.