36,681 research outputs found

    A review of modular strategies and architecture within manufacturing operations

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    This paper reviews existing modularity and modularization literature within manufacturing operations. Its purpose is to examine the tools, techniques, and concepts relating to modular production, to draw together key issues currently dominating the literature, to assess managerial implications associated with the emerging modular paradigm, and to present an agenda for future research directions. The review is based on journal papers included in the ABI/Inform electronic database and other noteworthy research published as part of significant research programmes. The research methodology concerns reviewing existing literature to identify key modular concepts, to determine modular developments, and to present a review of significant contributions to the field. The findings indicate that the modular paradigm is being adopted in a number of manufacturing organizations. As a result a range of conceptual tools, techniques, and frameworks has emerged and the field of modular enquiry is in the process of codifying the modular lexicon and developing appropriate modular strategies commensurate with the needs of manufacturers. Modular strategies and modular architecture were identified as two key issues currently dominating the modular landscape. Based on this review, the present authors suggest that future research areas need to focus on the development and subsequent standardization of interface protocols, cross-brand module use, supply chain power, transparency, and trust. This is the first review of the modular landscape and as such provides insights into, first, the development of modularization and, second, issues relating to designing modular products and modular supply chains

    The CLAWAR project

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    In Europe, there are two main thematic groups focusing on robotics, the Climbing and Walking Robots (CLAWAR) project (http://www.clawar.net) and the European Robotics Network (EURON) project (http://www.euron.org). The two networks are complementary: CLAWAR is industrially focused on the immediate needs, and EURON is focused more on blue skies research. This article presents the activities of the CLAWAR project

    The CLAWAR project

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    In Europe, there are two main thematic groups focusing on robotics, the Climbing and Walking Robots (CLAWAR) project (http://www.clawar.net) and the European Robotics Network (EURON) project (http://www.euron.org). The two networks are complementary: CLAWAR is industrially focused on the immediate needs, and EURON is focused more on blue skies research. This article presents the activities of the CLAWAR project

    Modular Production Networks in Electronics: The Nexus between Management and Economics Research

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    In the last two decades, the electronics industry has evolved from a vertically integrated in-dustry to a vertically segmented one. This transformation has often been attributed to the modularization of electronic products. In this paper, we argue that the degree of modularity is an active choice variable for a firm. As a result, it is necessary to focus on the underlying fac-tors that drive both modularity and the organization of production. This provides insights into the transformation taking place in global electronics production, with vertical fragmentation, horizontal consolidation, and the growth of Asian electronics production.Modularity, electronics, outsourcing, contract manufacturing, East Asia

    Modular Production Networks in Electronics: the Nexus between Management and Economics Research

    Get PDF
    In the last two decades, the electronics industry has evolved from a vertically integrated industry to a vertically segmented one. This transformation has often been attributed to the modularization of electronic products. In this paper, we argue that the degree of modularity is an active choice variable for a firm. As a result, it is necessary to focus on the underlying factors that drive both modularity and the organization of production. This provides insights into the transformation taking place in global electronics production, with vertical fragmentation, horizontal consolidation, and the growth of Asian electronics production.modularity, electronics, outsourcing, contract manufacturing, East Asia

    Electrical Power Working Group report

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    The status of and need for power technologies for Spacecraft 2000 were assessed and development programs required to establish an achievable and competitive technology base for spacecraft of the 21st century were identified. The results are summarized, including the recommendations and the underlying rationale

    Energy storage systems comparison for the space station

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    An overview of the requirements, options, selection criteria and other considerations, and current status with regard to the energy storage subsystem (ESS) for the photovoltaic power system alternative for the space station is provided

    Craniofacial diversification in the domestic pigeon and the evolution of the avian skull.

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    A central question in evolutionary developmental biology is how highly conserved developmental systems can generate the remarkable phenotypic diversity observed among distantly related species. In part, this paradox reflects our limited knowledge about the potential for species to both respond to selection and generate novel variation. Consequently, the developmental links between small-scale microevolutionary variations within populations to larger macroevolutionary patterns among species remain unbridged. Domesticated species, such as the pigeon, are unique resources for addressing this question, because a history of strong artificial selection has significantly increased morphological diversity, offering a direct comparison of the developmental potential of a single species to broader evolutionary patterns. Here, we demonstrate that patterns of variation and covariation within and between the face and braincase in domesticated breeds of the pigeon are predictive of avian cranial evolution. These results indicate that selection on variation generated by a conserved developmental system is sufficient to explain the evolution of crania as different in shape as the albatross or eagle, parakeet or hummingbird. These 'rules' of cranio-facial variation are a common pattern in the evolution of a broad diversity of vertebrate species and may ultimately reflect structural limitations of a shared embryonic bauplan on functional variation
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