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From process models towards total building project management
Published in Manuel Martínez, Raimar Scherer, eWork and eBusiness in Architecture, Engineering and Construction, 2020
C.E. Firat, J. Kiiras, P. Huovinen
For example, the Structured Analysis and Design Technique(SADT) is a modeling methodology that was originally developed to describe a system and its environment. The Integration Definition language 0 for Function Modeling (IDEF0) is a subset of this methodology and one out of a number of available process modeling languages for technical process descriptions. The graphic diagram is the major component of an IDEF-0 model, containing boxes, arrows, box/arrow interconnections and associated relationships. A box represents a major function of a subject. These functions (described using verbs or verb phrases) are decomposed into more detailed diagrams, until the subject is described at a level necessary to support the goals of the project. The top-level diagram in the model provides the most general description of the subject and is followed by a series of child diagrams providing more details about the subject. Arrows describe the things (i.e. data and objects) that constitute the system using nouns or noun phrases (NIST 1993).
Digital twin-driven rapid individualised designing of automated flow-shop manufacturing system
Published in International Journal of Production Research, 2019
Qiang Liu, Hao Zhang, Jiewu Leng, Xin Chen
Conventional MSD study usually focuses on the system modelling aspect. Typical modelling methods used in the MSD include Axiomatic Design (AD) (Suh 1995), Graph with Results and Actions Interrelated (GRAI) (Guy 1989), Structured Analysis and Design Technique (SADT) (Santarek and Buseif 1998), Integrated computer-aided manufacturing DEFinition (IDEF) (Cheng-Leong, Pheng, and Leng 1999), EXPRESS-G/STEP-CNC (Xu, Wang, and Rong 2006) and Petri Net (Li, Dai, and Meng 2009). Moreover, integration modelling with other techniques such as virtual reality, data envelopment analysis, fuzzy logic, multi-agent systems and complex network analytics (Leng and Jiang 2018) are found as emerging ways. For instance, Yang et al. (2015) presented a collaborative design platform for manufacturing systems, which enables a holistic use of virtual factory tools at various levels. Cochran, Foley, and Bi (2017) followed the principles of manufacturing system design decomposition to make effective cost and production system design decisions. These modelling-based methods mainly focus on the definitions of functional requirements, design parameters and process flow of a manufacturing system, which provide solid theoretical foundation to generate and evaluate design solutions of manufacturing systems. However, little attention has been devoted to the coupling relationship among different elements, and no single model is suitable for addressing all types of problems in MSD.
Morphing boxes for the integration of shape optimization in the product design process
Published in Computer-Aided Design and Applications, 2018
Alexander Brune, Thiago Weber Martins, Reiner Anderl
Now that the cut-and-replace approach has been addressed, the overall procedure that constitutes the morphing operation can be summarized. It is modeled as a process chain using the Structured Analysis and Design Technique (SADT) and illustrated in Fig. 4., which shows the succession of morphing box definition, deviation analysis, and digitized morphing, in parallel to the cut-and-replace approach. The definition of process chains in the context of computer-aided tools and the product development process is the structured depiction of the flow of information, including its generation, processing and exchange. They are described in more detail in [13]. The diagram in Fig. 4 underlines that two sets of control points are ultimately all the input that is required for the workflow, one set defining the initial morphing box, the other the deformed morphing box.
Impacts of IDEF0-Based Models on the Usefulness, Learning, and Value Metrics of Scrum and XP Project Management Guides
Published in Engineering Management Journal, 2022
Manuel Mora, Olayele Adelakun, Sergio Galvan-Cruz, Fen Wang
IDEF0 (i.e. Definition of Integration Modeling Function 0) is a graph-based modeling language (with syntax and semantics) and a protocol (with rules and procedures) for the graphic representation of any system, which can be represented as a flow of activities (not necessarily linear) (FIPS, 1993; IEEE/ISO/IEC, 2012). A system for IDEF0 can be a function, a process, a physical product, or other types of artifacts. IDEF0 was derived from the Structured Analysis and Design Technique (SADT) originally proposed by Douglas T. Ross and Softech, Inc. (Ross, 1977).