Natural gas processing requires the removal of acidic gases and dehydration using absorption, mainly conducted in tri-ethylene glycol (TEG). The process is accompanied by emission volatile organic compounds, including BTEX. In our previous work, multi-objective optimization was undertaken to determine optimal operating conditions terms parameters that can mitigate BTEX data-driven metamodeling ...

Using a face validity approach, this paper provides validation of the Database Forensic Investigation Metamodel (DBFIM). The DBFIM was developed to solve interoperability, heterogeneity, complexity, and ambiguity in database forensic investigation (DBFI) field, where several models were identified, collected, reviewed develop DBFIM. However, lacked validity-based approach that could ensure DBFI...

The purpose of this paper is to expose some shortcomings of the Object Constraint Language (OCL). We argue that, despite its numerous bene ts, OCL is too implementation-oriented and therefore not well-suited for conceptual modelling. Moreover, it is at times unnecessarily verbose, yet far from natural language. In the past couple of years, we have designed a language, Alloy, that has similar mo...

Model Management aims at developing new technologies and mechanisms to support the integration, evolution and matching of models. Such tasks are to be performed by means of a set of operators which work on models and their elements. Furthermore, model management performs these operations generically, that is, without being restricted to a particular metamodel (e.g. the relational or XML Schema ...

Harnessing metamodels to engineer application domains is at the core of Model-Driven Engineering. A large number of artifacts pursuing a common scope are defined starting from metamodels which represent the nucleus of an ecosystem. Analogously to any software artifact, metamodels are equally prone to evolution. However, changing a metamodel might affect the components of the ecosystem. In fact,...

In current CASE environments a user has to choose between efficient computerized support using a fixed methodical framework which may not fit his situation, or the freedom to do what seems appropriate in the given circumstance, but at the cost of losing efficient technological support. In this paper we examine adaptable metamodel based environments as a means to resolve this dilemma. Metamodel ...

To optimize a connecting rod satisfying fatigue life, metamodel-based design optimization is proposed. To approximately predict both volume and fatigue life of connecting rod, kriging metamodel is constructed based on maximin eigenvalue sampling. Fatigue analysis is accomplished for the calculation of fatigue life. The results of metamodel-based design optimization are compared with those of cl...