The ability to make rational decisions based on the synthesis of various pieces of information and to eventually arrive at an integrated design plays a very important role in everyday engineering practice. In this paper, a conceptual framework for manufacturing design is obtained through a causal perspective. This framework is used in developing a knowledge-based system that gains insight into the process of arc welding from a few detailed analyses and experiments on simplified models and rationally arrives at an integrated design of the actual process using a hybrid axiomatic-algorithmic approach for design synthesis. The design strategy presented here may also be applied to any manufacturing process in general.

published_or_final_version / Industrial and Manufacturing Systems Engineering / Doctoral / Doctor of Philosophy

Este trabalho analisa, em detalhe, a cognição como ação incorporada nos processos de trabalho. Os operadores não representam um mundo externo mas pensam e agem de forma interdependente. O ponto chave neste texto é que, sem nada como uma representação interna, trabalhadores (operadores) se engajam na atividade de trabalho numa coordenação sensório-motora em resposta para mudanças ambientais. Não há ruptura na experiência entre perceber, sentir e pensar. Esta pesquisa busca responder como os processos social e cultural são demandados para desenvolver esquemasimagem e esquemas-incorporados, os quais podem realizar pensamento abstrato usando suas capacidades para percepção e resposta motora. Este trabalho postula que as expressões lingüísticas e os processos cognitivos de nível superior evidenciam padrões dinâmicos de experiência corporal recorrente denominados esquemasimagem. Este trabalho afirma que estes padrões podem ser estendidos a estruturas de experiências não-tácita, não-física e não-visual. / This work analyzes, in detail, that cognition is embodied action in work process. The operators don.t represent an external world but think in order to act as part of your thinking. The key point in this text is that, without anything like an internal representation, workers (operators) engage, at work activity, in sensorimotor coordination in response to environmental changes. There is no rupture in experience between perceiving, feeling and thinking. These research asks how social and cultural process are required to develop image-schemata and embodied-schemata, that can perform abstract thinking using their capacities for perception and motor response. This work theorized that linguist expressions and higher cognitive processes evidenced dynamic patterns of recurrent bodily experience which we called image-schemata. This work argued that these patterns can be extended to structure non-tactile, non-physical and non-visual experiences.

Photocopy of typescript. / Digitized by Kansas Correctional Industries

Este trabalho analisa, em detalhe, a cognição como ação incorporada nos processos de trabalho. Os operadores não representam um mundo externo mas pensam e agem de forma interdependente. O ponto chave neste texto é que, sem nada como uma representação interna, trabalhadores (operadores) se engajam na atividade de trabalho numa coordenação sensório-motora em resposta para mudanças ambientais. Não há ruptura na experiência entre perceber, sentir e pensar. Esta pesquisa busca responder como os processos social e cultural são demandados para desenvolver esquemasimagem e esquemas-incorporados, os quais podem realizar pensamento abstrato usando suas capacidades para percepção e resposta motora. Este trabalho postula que as expressões lingüísticas e os processos cognitivos de nível superior evidenciam padrões dinâmicos de experiência corporal recorrente denominados esquemasimagem. Este trabalho afirma que estes padrões podem ser estendidos a estruturas de experiências não-tácita, não-física e não-visual. / This work analyzes, in detail, that cognition is embodied action in work process. The operators don.t represent an external world but think in order to act as part of your thinking. The key point in this text is that, without anything like an internal representation, workers (operators) engage, at work activity, in sensorimotor coordination in response to environmental changes. There is no rupture in experience between perceiving, feeling and thinking. These research asks how social and cultural process are required to develop image-schemata and embodied-schemata, that can perform abstract thinking using their capacities for perception and motor response. This work theorized that linguist expressions and higher cognitive processes evidenced dynamic patterns of recurrent bodily experience which we called image-schemata. This work argued that these patterns can be extended to structure non-tactile, non-physical and non-visual experiences.

In this research, an analytical model for analyzing a production line consisting of a series of automated workstations with infinite buffers is developed. Automated workstations are assumed to have deterministic processing times, and independent exponentially distributed operating time between failures and repair times. The analytical model starts with existing results from a Markov chain model of two automated workstations in series, where analytical expressions are developed for the average number of jobs in the second workstation and its queue. This research focuses on the development of a set of linking equations that can be used to analyze larger systems using a two workstation decomposition approach. These linking equations utilize probabilities computed in the two-workstation Markov chain model to compute workstation parameters for a single workstation such that the first two moments of the inter-departure process from the two-workstation system and the single workstation are the same. Simulations of a number of different 3-workstation and 10-workstation systems were carried out employing a range of workstation utilizations and processing time coefficients of variation. The results from these simulations were compared with those calculated with the analytical model and various two-parameter GI/G/1 approximations and linking equations present in the literature. The analytical model resulted in an average absolute percentage difference of less than 5% in the systems studied, and performed much better than general two parameter G/G/1 approximations. The analytical model was also robust in ranking the queues in the order of the average number of jobs present in the queues. / Graduation date: 2004

Thesis (M.S.)--Mississippi State University. Department of Mechanical Engineering. / Title from title screen. Includes bibliographical references.

Thesis (Ph. D.)--University of Queensland, 2001. / Includes bibliographical references.

Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2002. / Includes bibliographical references (leaves 140-148). Also available in electronic version. Access restricted to campus users.

Thesis--PlanB (M.S.)--University of Wisconsin--Stout, 2004. / Field problem. Includes bibliographical references.