Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 59 for “"metamodel"”.
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Automated Metamodel Instance Generation Satisfying Quantitative Constraints
Metamodels are the core of the metamodeling approach and widely used in model driven architecture. The high abstraction level provided by metamodels makes the metamodeling approach popular among software modelers and language designers. However, the metamodeling approach has one big drawback: it …
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Subtyping and inheritance in a metamodel of abstractions
<p>In this paper, two fundamental techniques (subtyping and inheritance) for reusing existing components in the design of complex systems are investigated. The objective is to raise the level of abstraction of our understanding of each technique by more rigorously defining them at an abstract …
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Structures and Processes for Managing Model-Metamodel Co-evolution
… for managing a type of evolution termed model-metamodel co-evolution, in which changes to a modelling language are propagated to models. This thesis demonstrates that model-metamodel co-evolution occurs often in MDE projects, and that dedicated structures and processes for its management can …
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Augmented Conversation and Cognitive Apprenticeship Metamodel Based Intelligent Learning Activity Builder System
… Conversation and Cognitive Apprenticeship Metamodel (ACCAM) based on apriori theoretical knowledge and assumptions of its underlying theories. ACCAM was implemented in an Intelligent Learning Activity Builder System (ILABS)—an ITS authoring tool. ACCAM’s implementation aims to facilitate …
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A Metamodel based Multiple Criteria Optimization via Simulation Method for Polymer Processing
… order to accomplish this, design of experiments, metamodeling, Data Envelopment Analysis, and Pareto optimality are combined. After first testing the method with well-known multiobjective optimization test problems, it is illustrated with several injection molding case studies. The method is also …
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Metamodel-based inverse uncertainty quantification of nuclear reactor simulators under the Bayesian framework
… we used systematically and rigorously developed metamodels based on stochastic spectral techniques and Gaussian Processes (also known as Kriging) emulators. We demonstrated the developed methodology based on three problems with different levels of sophistication: (1) Point Reactor Kinetics …
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Robust and Data-Efficient Metamodel-Based Approaches for Online Analysis of Time-Dependent Systems
Metamodeling is regarded as a powerful analysis tool to learn the input-output relationship of a system based on a limited amount of data collected when experiments with real systems are costly or impractical. As a popular metamodeling method, Gaussian process regression (GPR), has been …
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5SGraph: A Modeling Tool for Digital Libraries
… digital libraries. 5SGraph is based on a metamodel that describes digital libraries using the 5S theory. The output from 5SGraph is a digital library model that is an instance of the metamodel, expressed in the 5S description language (5SL). 5SGraph presents the metamodel in a structured …
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Failure logic modelling: a pragmatic approach
… techniques through a single well-defined Metamodel. This Failure Logic Metamodel (FLMM) identifies the key safety engineering concepts captured by failure logic modelling techniques, together with their inter-relationships. Whilst maintaining independence from any individual technique, …
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Uma abordagem dirigida por modelos para desenvolvimento de middlewares auto-adaptativos para transmissão de fluxo de dados baseado em restrições de QoS
… the quality of service. This work presents a metamodel for modeling middlewares based on components in order to provide to an application the abstraction of a communication between components involved in a data stream, regardless their location. Another feature of the metamodel is the …
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Using Model Driven Engineering to Reliably Automate the Measurement of Object-Oriented Software
… Constraint Language (OCL) and a measurement metamodel and transforming all other models to this canonical metamodel. Using this approach only a single definition of a software metric is required and can be applied to different models of a software system thus helping to provide assurance that …
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Surrogate-based global optimization of composite material parts under dynamic loading
… (DACE) in which smart sampling and continuous metamodel enhancement drive the design process towards a global optimum. Kriging metamodel is used in the optimization algorithm. This metamodel enables the definition of an expected improvement function that is maximized at each iteration in order …
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Consistency and Uniform Bounds for Heteroscedastic Simulation Metamodeling and Their Applications
Heteroscedastic metamodeling has gained popularity as an effective tool for analyzing and optimizing complex stochastic systems. A heteroscedastic metamodel provides an accurate approximation of the input-output relationship implied by a stochastic simulation experiment whose output is subject to …
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Urban-scale impacts on the global-scale composition and climate effects of anthropogenic aerosols
… collocation method have been used for the metamodel, and its coefficients were fit so as to be applicable under a broad range of present-day and future conditions. The inputs upon which this metamodel have been formed are based on a combination of physical properties (average temperature, …
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Computationally efficient simulation-based optimization algorithms for large-scale urban transportation problems
… In the first part, we propose a simulation-based metamodel algorithm that combines the use of an analytical stationary traffic network model and a dynamic microscopic traffic simulator. In the second part, we propose a metamodel algorithm that combines the use of an analytical transient traffic …
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Adapting mobile systems using logical mobility primitives
… Targeting Integrated Networks) component metamodel, a lightweight local component metamodel that offers the flexible use of logical mobility primitives. The metamodel is instantiated to build the SATIN middleware system, a component-based mobile computing middleware that uses the mobility …
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Metamodelización y formalismos para la representación del comportamiento
… called NOESIS architecture. We use a metamodeling perspective to disassociate from the particularities of each language or technique. Metamodeling is being increasingly used as a software and method engineering tool, and it has been proven in the literature that the use of a …
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ArchiSmartCity: Modelling the Alignment of Services and Information in Smart City Architectures
… is an absence of such concepts in languages and metamodels for Enterprise Modelling. These architectures and metamodels mostly emphasize technical aspects that constitute Smart Cities and they rarely focus on city services and their strategic aspects towards delivering the cities vision and …
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Fabricação digital para a produção de barracas das festas de largo de Salvador: experimentações na Festa da Conceição da Praia
The objective of this research is to propose a Metamodel for food and drink stalls for the "Festas de Largo de Salvador", guided by digital manufacturing (DM) and mass customization (MC), in collaboration with the stallholders. The model is based on a set of structured elements typical of the …
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An advanced traceability schema as a baseline to improve supporting lifecycle processes
… common way to cope with this fact is the use of metamodels to underpin methodologies. However, current traceability metamodels still have serious limitations. Concerning methodologies in general, three hierarchical layered levels have been identified: metamodel, methodology and project. Current …
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