scholarly journals A generic model decomposition technique and its application to the Eclipse modeling framework

2013 ◽  
Vol 14 (2) ◽  
pp. 921-952 ◽  
Author(s):  
Qin Ma ◽  
Pierre Kelsen ◽  
Christian Glodt
Keyword(s):  
Generic Model ◽  
Decomposition Technique ◽  
Modeling Framework ◽  
Model Decomposition ◽  
Eclipse Modeling Framework

Building Normalized Systems from Domain Models in Ecore

2021 ◽  
Author(s):  
Marek Suchánek ◽  
Herwig Mannaert ◽  
Peter Uhnák ◽  
Robert Pergl
Keyword(s):  
Information Loss ◽  
Structural Modelling ◽  
Data Types ◽  
Modeling Framework ◽  
Enterprise Information ◽  
Enterprise Information Systems ◽  
Modelling Languages ◽  
Domain Models ◽  
Eclipse Modeling Framework

Normalized Systems (NS) theory describes how to design and develop evolvable systems. It is applied in practice to generate enterprise information systems using NS Expanders from models of NS Elements. As there are various well-established modelling languages, the possibility to (re-)use them to create NS applications is desired. This paper presents a mapping between the NS metamodel and the Ecore metamodel as a representant of essential structural modelling. The mapping is the basis of the transformation execution tool based on Eclipse Modeling Framework and NS Java libraries. Both the mapping and the tool are demonstrated in a concise case study but cover all essential Ecore constructs. During the work, several interesting similarities of the two metamodels were found and are described, e.g., its meta-circularity or ability to specify data types using references to Java classes. Still, there are significant differences between the metamodels that prevent some constructs from being mapped. The issues with information loss upon the transformation are mitigated by incorporating additional options that serve as key-value annotations. The results are ready to be used for any Ecore models to create an NS model that can be expanded into an NS application.

Modal Decomposition Solution of Lamb Wave Scattering at Step-Like Discontinuity

2011 ◽  
Vol 368-373 ◽  
pp. 2398-2401 ◽  
Author(s):  
Fei Long Feng ◽  
Yan Liu
Keyword(s):  
Lamb Wave ◽  
Wave Scattering ◽  
Decomposition Method ◽  
Symmetric Mode ◽  
Decomposition Technique ◽  
Modal Decomposition ◽  
Model Decomposition ◽  
Infinite Model ◽  
Different Thickness ◽  
Flux Conservation

Modal decomposition method is utilized to investigate Lamb wave scattering at step-like discontinuity. The structure is regard as a special delamination structure where one or two delamination layers are missing and only one delamination layer extended to infinite. Model decomposition technique is then combined with the boundary condition equations to get the scattering solution of the whole discontinuity region. The efficacy of the method is illustrated by calculation examples where the scattering of the second symmetric mode at step-discontinuity with different thickness are evaluated and Energy flux conservation is confirmed.

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