Modularization Assessment of Product Architecture

Modularization refers to the opportunity for mixing-and-matching of components in a modular product design in which the standard interfaces between components are specified to allow for a range of variation in components to be substituted in a product architecture. It is through mixing-and-matching of these components, and how these components interface with one another, that new systems are created. Consequently, the degree of modularization inherent in a system is highly dependent upon the components and the interface constraints shared among the components, modules, and sub-systems. In this paper, a mathematical model is derived for analyzing the degree of modularization in a given product architecture by taking into consideration the number of components, number of interfaces, the composition of new-to-the-firm (NTF) components, and substitutability of components. An analysis of Chrysler windshield wipers controller suggests that two product architectures may share similar interface constraints, but the opportunity for modularization of one module is significant higher than the other due to the higher substitutability of its components and lower composition of NTF components.Product architecture, modularization, substitutability, new product development

Modularization in the Auto Industry: Interlinked Multiple Hierarchies of Product, Production, and Supplier Systems

This paper analyzes the modularization in the world auto industry. The modularization in the industry has involved architectural changes in product, production, and supplier systems with each region (Japan, Europe and the U.S.A.) emphasizing different purposes and aspects. As an attempt to understand such multi-faceted, complex processes coherently, this paper proposes a conceptual framework that sees development / production activities as interlinked, multiple hierarchies of products, processes, and inter-firm boundaries. With this framework, drawing on case studies and questionnaire survey data, the paper examines the on-going processes of modularization in the industry. It is argued that tensions exist among the three hierarchies, and such tensions may lead to further changes in product, production and supplier-system architectures in the auto industry, in a dynamic and path-dependent manner.Automotive industry, modularization, product architecture, production system, supplier system, hierarchies

Legacy Software Restructuring: Analyzing a Concrete Case

Software re-modularization is an old preoccupation of reverse engineering research. The advantages of a well structured or modularized system are well known. Yet after so much time and efforts, the field seems unable to come up with solutions that make a clear difference in practice. Recently, some researchers started to question whether some basic assumptions of the field were not overrated. The main one consists in evaluating the high-cohesion/low-coupling dogma with metrics of unknown relevance. In this paper, we study a real structuring case (on the Eclipse platform) to try to better understand if (some) existing metrics would have helped the software engineers in the task. Results show that the cohesion and coupling metrics used in the experiment did not behave as expected and would probably not have helped the maintainers reach there goal. We also measured another possible restructuring which is to decrease the number of cyclic dependencies between modules. Again, the results did not meet expectations

Modularization for Product Competitiveness - Analysis of Modularization in the Digital Camera Industry -

Focusing on the digital camera industry with high Japanese competitiveness in IT industry, entrants are analyzed in detail as to how growth was achieved after the period of market introduction and particularly from the view of modularization and platform strategies of leading companies. As a result, the involvement of indicators such as product production, development lead-time, and price with the strategies of modularization and platform was analyzed.Product Development, Modularity, Product Platform, Vertical Integration, Product Strategy

Modularization for the Cell Ontology

One of the premises of the OBO Foundry is that development of an orthogonal set of ontologies will increase domain expert contributions and logical interoperability, and decrease maintenance workload. For these reasons, the Cell Ontology (CL) is being re-engineered. This process requires the extraction of sub-modules from existing OBO ontologies, which presents a number of practical engineering challenges. These extracted modules may be intended to cover a narrow or a broad set of species. In addition, applications and resources that make use of the Cell Ontology have particular modularization requirements, such as the ability to extract custom subsets or unions of the Cell Ontology with other OBO ontologies. These extracted modules may be intended to cover a narrow or a broad set of species, which presents unique complications.

We discuss some of these requirements, and present our progress towards a customizable simple-to-use modularization tool that leverages existing OWL-based tools and opens up their use for the CL and other ontologies

APPLICATION OF THE MODULARIZATION CONCEPT TO SATELLITE TAPE RECORDERS

Application of the modularization concept to satellite tape recorder

Modular categories of types B,C and D

We construct four series of modular categories from the two-variable Kauffman polynomial, without use of the representation theory of quantum groups at roots of unity. The specializations of this polynomial corresponding to quantum groups of types B, C and D produce series of pre-modular categories. One of them turns out to be modular and three others satisfy Brugui\`eres' modularization criterion. For these four series we compute the Verlinde formulas, and discuss spin and cohomological refinements.Comment: 32 pages, LaTeX with figures, Comment. Math. Helv. 200