Product Life-Cycle Metadata Modeling and Its Application with RDF

Abstract

The whole product life cycle consists of three phases: Beginning of Life (BOL), Middle of Life (MOL), and End of Life (EOL). Although large amounts of product life-cycle data are generated over the whole product life cycle, data flows are rather vague after BOL. Over the last decade, however, emerging Internet, wireless mobile telecommunications, and product identification technologies have created the potential of making the whole product life cycle visible. As a result, the scope of data to be managed has expanded over the whole product life cycle. Hence, it becomes important to describe product life-cycle metadata in a systematic manner. Although much attention has been paid to data modeling over several objects such as products and processes, modeling methodology for product life-cycle metadata is not well developed. To cope with this limitation, we develop a modeling method for product life-cycle metadata by using the resource description framework (RDF). We define an RDF data model and its schema for describing and managing product life-cycle metadata. In addition, we describe how the proposed RDF model can be usefully applied to track, trace, and infer product life-cycle data with an RDF query language.Index Terms-Data design and management, emerging technologies, knowledge and data engineering tools and techniques, query languages.

Managing security debt across PLC phases in a VSE context

“…This VSE has its own PLC which is based on the following PLC phases: Requirements: all requirements are identified, and safety/security/TD requirements are defined. Modelling: this phase includes modelling the system, including data and resources and the assurance cases. In fact, it is relevant for managing the whole PLC, and the resulting assurance cases are the common place where safety/security requirements/TD elements are modelled. Simulation: some papers such as Sakita and Mori which outlines a structure for a so‐called Product Life‐Cycle Simulation System.…”

“…• Modelling: this phase includes modelling the system, including data and resources 13,70,71 and the assurance cases. In fact, it is relevant for managing the whole PLC, and the resulting assurance cases are the common place where safety/security requirements/TD elements are modelled.…”