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Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering

Aiero: An Algorithm For Identifying Engineering Relationships In Ontologies, Paul Witherell, Ian R. Grosse, Sundar Krishnamurty, Jack C. Wileden Oct 2013

Aiero: An Algorithm For Identifying Engineering Relationships In Ontologies, Paul Witherell, Ian R. Grosse, Sundar Krishnamurty, Jack C. Wileden

Center for e-Design Publications

Semantic technologies are playing an increasingly popular role as a means for advancing the capabilities of knowledge management systems. Among these advancements, researchers have successfully leveraged semantic technologies, and their accompanying techniques, to improve the representation and search capabilities of knowledge management systems. This paper introduces a further application of semantic techniques. We explore semantic relatedness as a means of facilitating the development of more “intelligent” engineering knowledge management systems. Using semantic relatedness quantifications to analyze and rank concept pairs, this novel approach exploits semantic relationships to help identify key engineering relationships, similar to those leveraged in change management systems ...


Ontology-Based Knowledge Representation For Obsolescence Forecasting, Liyu Zheng, Raymond Nelson Iii, Peter Sandborn, Janis P. Terpenny Mar 2013

Ontology-Based Knowledge Representation For Obsolescence Forecasting, Liyu Zheng, Raymond Nelson Iii, Peter Sandborn, Janis P. Terpenny

Industrial and Manufacturing Systems Engineering Publications

Sustainment refers to all activities necessary to keep an existing system operational, continue to manufacture and field versions of the system that satisfy the original requirements, or manufacture and field revised versions of the system that satisfy evolving requirements [3].

The sales data is mainly in the form of number of units shipped. If it is not available, sales in market dollars or percentage market share may be used, as long as the total market does not increase appreciably over time [6].

For some products, within the same type of the product, life cycle curves characterized by parameters k, μ ...


An Integrated Approach To Information Modeling For The Sustainable Design Of Products, Douglas C. Eddy, Sundar Krishnamurty, Ian R. Grosse, Jack C. Wileden, Paul Witherell, Kemper E. Lewis Jan 2013

An Integrated Approach To Information Modeling For The Sustainable Design Of Products, Douglas C. Eddy, Sundar Krishnamurty, Ian R. Grosse, Jack C. Wileden, Paul Witherell, Kemper E. Lewis

Center for e-Design Proceedings

The design of more sustainable products can be best accomplished in a tradeoff-based design process that methodically handles conflicting objectives. Such conflicts are often seen between, environmental impact, cost, and product performance. To support such a process, we propose the development of an environment where sustainability considerations are explicitly introduced early into the design process. This explicitness is provided by integrating the requirements information of sustainability standards and regulations directly into the design process. The emergence of the semantic web provides an interoperable environment in which the context and meaning of knowledge about the relationships among various domains can be ...


Improved Knowledge Management Through First-Order Logic In Engineering Design Ontologies, Paul Witherell, Sundar Krishnamurty, Ian R. Grosse, Jack C. Wileden May 2010

Improved Knowledge Management Through First-Order Logic In Engineering Design Ontologies, Paul Witherell, Sundar Krishnamurty, Ian R. Grosse, Jack C. Wileden

Center for e-Design Publications

This paper presents the use of first-order logic to improve upon currently employed engineering design knowledge management techniques. Specifically, this work uses description logic in unison with Horn logic, to not only guide the knowledge acquisition process but also to offer much needed support in decision making during the engineering design process in a distributed environment. The knowledge management methods introduced are highlighted by the ability to identify modeling knowledge inconsistencies through the recognition of model characteristic limitations, such as those imposed by model idealizations. The adopted implementation languages include the Semantic Web Rule Language, which enables Horn-like rules to ...


Ontologies For Supporting Engineering Design Optimization, Paul Witherell, Sundar Krishnamurty, Ian R. Grosse Jun 2007

Ontologies For Supporting Engineering Design Optimization, Paul Witherell, Sundar Krishnamurty, Ian R. Grosse

Center for e-Design Publications

This paper presents an optimization ontology and its implementation into a prototype computational knowledge-based tool dubbed ONTOP (ontology for optimization). Salient feature of ONTOP include a knowledge base that incorporates both standardized optimization terminology, formal method definitions, and often unrecorded optimization details, such as any idealizations and assumptions that may be made when creating an optimization model, as well as the model developer’s rationale and justification behind these idealizations and assumptions. ONTOP was developed using Protégé, a Java-based, free open-source ontology development environment created by Stanford University. Two engineering design optimization case studies are presented. The first case study ...