4,551 research outputs found

    Assembly and Disassembly Planning by using Fuzzy Logic & Genetic Algorithms

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    The authors propose the implementation of hybrid Fuzzy Logic-Genetic Algorithm (FL-GA) methodology to plan the automatic assembly and disassembly sequence of products. The GA-Fuzzy Logic approach is implemented onto two levels. The first level of hybridization consists of the development of a Fuzzy controller for the parameters of an assembly or disassembly planner based on GAs. This controller acts on mutation probability and crossover rate in order to adapt their values dynamically while the algorithm runs. The second level consists of the identification of theoptimal assembly or disassembly sequence by a Fuzzy function, in order to obtain a closer control of the technological knowledge of the assembly/disassembly process. Two case studies were analyzed in order to test the efficiency of the Fuzzy-GA methodologies

    Organizing Successful New Service Development: A Literature Review

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    How should one organize new service development? This is an important topic for decision-makers in service firms. The numerous publications on this subject are highly fragmented. This paper classifies current literature on organizing new service development (NSD) into two evolutionary stages: managing key activities in the NSD process, and creating a climate for continuous innovation. For both stages, its consequences for the initiation and implementation of new services are discussed.

    A reference architecture for the component factory

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    Software reuse can be achieved through an organization that focuses on utilization of life cycle products from previous developments. The component factory is both an example of the more general concepts of experience and domain factory and an organizational unit worth being considered independently. The critical features of such an organization are flexibility and continuous improvement. In order to achieve these features we can represent the architecture of the factory at different levels of abstraction and define a reference architecture from which specific architectures can be derived by instantiation. A reference architecture is an implementation and organization independent representation of the component factory and its environment. The paper outlines this reference architecture, discusses the instantiation process, and presents some examples of specific architectures by comparing them in the framework of the reference model

    Trends integration process as input data for Kansei Engineering Systems

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    This paper aims at studying new ways of users integration in “emotional Design” or “Kansei engineering systems”. The main goal of this study was the integration of the trend factor in design, with an early emotional evaluation of “Trend cards” produced by the designers. After a definition of the study context, we explain the experimental protocol which was followed. It was based on a questionnaire method involving 56 French subjects and applied in the field of shoes design. The data analysis was mainly proceed by the way of a Principal Component Analysis. The expected results were centred on the emotional evaluation of the Trendcards in order to establish further design rules for a Kansei Engineering system. In conclusion, we can recognize important semantic effects and influences which can be used as information for the implementation of the design elements data base

    Talking Titler: Evolutionary and Self-Adaptive Land Tenure Information System Development

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    Conventional land registration systems often do not produce the desired results in uncertain land tenure situations such as peri-urban areas in developing world cities, post-conflict situations, land restitution claims and aboriginal land systems. In the Talking Titler system, flexibility in creating relationships between people and between people and their interests in land has been the primary design feature. It is a tool for prototyping different designs and for developing land tenure information systems usung evolutionary strategies. The methodology was originally conceived in urban informal settlement upgrade projects and land reform and land restitution projects in South Africa in the 1990’s. In recent years, the concepts have been tested through interviews with aboriginal peoples groups in Canada, field trials and an initial implementation in land regularization in Nigeria, and a land administration study in Somaliland. The paper overviews the conceptual design of the system, how the design was formulated, testing of the system, and current development. The paper concludes by overviewing an initial design and testing with  evolutionary database development and self-adapting software using an extensible markup language (XML) database to reduce the human input into system changes as it evolves

    A theory and model for the evolution of software services

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    Software services are subject to constant change and variation. To control service development, a service developer needs to know why a change was made, what are its implications and whether the change is complete. Typically, service clients do not perceive the upgraded service immediately. As a consequence, service-based applications may fail on the service client side due to changes carried out during a provider service upgrade. In order to manage changes in a meaningful and effective manner service clients must therefore be considered when service changes are introduced at the service provider's side. Otherwise such changes will most certainly result in severe application disruption. Eliminating spurious results and inconsistencies that may occur due to uncontrolled changes is therefore a necessary condition for the ability of services to evolve gracefully, ensure service stability, and handle variability in their behavior. Towards this goal, this work presents a model and a theoretical framework for the compatible evolution of services based on well-founded theories and techniques from a number of disparate fields.

    A determinants of innovativeness model for manufacturing firms

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    This paper offers a comprehensive model of determinants of innovativeness based on empirical data gathered from 184 manufacturing firms located in the Northern Marmara region in Turkey. As opposed to studies that establish a relationship between a limited set of antecedents and innovativeness, this study allows us to investigate the significance of an antecedent when compared to others. Such invaluable knowledge not only enables decision-makers to manage their innovation strategies but also provides a guideline for effective allocation of their limited resources to increase innovation. The analysis reveals that among all possible determinants considered, the highest impact on innovativeness is intellectual capital. This determinant is followed by organisational milieu that consists of the organisational structure and culture components. Path analyses for both of these major innovation determinants are investigated in detail. Some managerial implications are suggested

    Deliberate Learning and the Evolution of Dynamic Capabilities

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    This paper investigates the mechanisms through which organizations develop dynamic capabilities, defined as routinized activities directed to the development and adaptation of operating routines. It addresses the role of (1) experience accumulation, (2) knowledge articulation, and (3) knowledge codification processes in the evolution of dynamic, as well as operational, routines. The argument is made that dynamic capabilities are shaped by the coevolution of these learning mechanisms. At any point in time, firms adopt a mix of learning behaviors constituted by a semiautomatic accumulation of experience and by deliberate investments in knowledge articulation and codification activities. The relative effectiveness of these capability-building mechanisms is analyzed here as contingent upon selected features of the task to be learned, such as its frequency, homogeneity, and degree of causal ambiguity. Testable hypotheses about these effects are derived. Somewhat counterintuitive implications of the analysis include the relatively superior effectiveness of highly deliberate learning processes such as knowledge codification at lower levels of frequency and homogeneity of the organizational task, in contrast with common managerial practice
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