869 resultados para Just-in-time


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Decía Foucault que "el umbral de modernidad biológica de una sociedad se sitúa en el momento en que la especie entra como apuesta del juego en sus propias estrategias políticas". A tres siglos de que Occidente cruzó ese umbral, analizaré algunos ejes de la nueva estrategia hegemónica para anudar las biopolíticas de población y las anatomo-políticas del cuerpo-máquina. Esta estrategia se consolida en la segunda mitad del siglo XX junto a la transformación de las sociedades disciplinarias y de control durante el capitalismo financiero y posfordista. Enlaza tres dispositivos cuyo objeto ya no es el sexo sino el fitness, la salud y las biotecnologías. El nuevo dispositivo sanitario apunta a la normalización y gestión privada de la enfermedad, entendida como mal potencial y endémico, cuyo descuido puede castigarse. El dispositivo biotecnológico, que incluye la genética sin limitarse a ella, altera la forma de intervención sobre los cuerpos. El dispositivo de fitness recoge las exigencias de un cuerpo "adecuado", que "encaje" en el nuevo régimen de aparición-espectáculo; su principal valor es el de exhibición, y opera con eficacia allí donde la aspiración a una movilidad económica, social o cultural se desplaza hacia una búsqueda estética de "redención por la apariencia".

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Decía Foucault que "el umbral de modernidad biológica de una sociedad se sitúa en el momento en que la especie entra como apuesta del juego en sus propias estrategias políticas". A tres siglos de que Occidente cruzó ese umbral, analizaré algunos ejes de la nueva estrategia hegemónica para anudar las biopolíticas de población y las anatomo-políticas del cuerpo-máquina. Esta estrategia se consolida en la segunda mitad del siglo XX junto a la transformación de las sociedades disciplinarias y de control durante el capitalismo financiero y posfordista. Enlaza tres dispositivos cuyo objeto ya no es el sexo sino el fitness, la salud y las biotecnologías. El nuevo dispositivo sanitario apunta a la normalización y gestión privada de la enfermedad, entendida como mal potencial y endémico, cuyo descuido puede castigarse. El dispositivo biotecnológico, que incluye la genética sin limitarse a ella, altera la forma de intervención sobre los cuerpos. El dispositivo de fitness recoge las exigencias de un cuerpo "adecuado", que "encaje" en el nuevo régimen de aparición-espectáculo; su principal valor es el de exhibición, y opera con eficacia allí donde la aspiración a una movilidad económica, social o cultural se desplaza hacia una búsqueda estética de "redención por la apariencia".

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Decía Foucault que "el umbral de modernidad biológica de una sociedad se sitúa en el momento en que la especie entra como apuesta del juego en sus propias estrategias políticas". A tres siglos de que Occidente cruzó ese umbral, analizaré algunos ejes de la nueva estrategia hegemónica para anudar las biopolíticas de población y las anatomo-políticas del cuerpo-máquina. Esta estrategia se consolida en la segunda mitad del siglo XX junto a la transformación de las sociedades disciplinarias y de control durante el capitalismo financiero y posfordista. Enlaza tres dispositivos cuyo objeto ya no es el sexo sino el fitness, la salud y las biotecnologías. El nuevo dispositivo sanitario apunta a la normalización y gestión privada de la enfermedad, entendida como mal potencial y endémico, cuyo descuido puede castigarse. El dispositivo biotecnológico, que incluye la genética sin limitarse a ella, altera la forma de intervención sobre los cuerpos. El dispositivo de fitness recoge las exigencias de un cuerpo "adecuado", que "encaje" en el nuevo régimen de aparición-espectáculo; su principal valor es el de exhibición, y opera con eficacia allí donde la aspiración a una movilidad económica, social o cultural se desplaza hacia una búsqueda estética de "redención por la apariencia".

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This paper addresses the question of how just-in-time can be implemented within high variety manufacture. To illustrate some of the principles in relation to the high variety-low volume situation the case of a computer manufacturer is considered in detail. For contrast the paper also considers the case of the manufacture of highly-configured four wheel drive vehicles where both variety and volumes are high. The most important issue in high variety/low volume production is that JIT operation should be seen in terms of the tactical holding of inventory in upstream buffers within the supply chain so that value is not added to work in progress prematurely. Tactical buffers ensure that service levels are maintained and the risk of stock-outs is minimized. In high variety/high volume production schedule integrity is the key factor, unreliable schedules being a major inhibitor to the introduction of JIT.

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Just-in-time (JIT) production systems are increasingly being seen as a vital way for manufacturing organizations to enhance their competitiveness. A number of commentators have suggested that this will simplify jobs and reduce employee well-being. This paper presents a conceptual framework for interpreting the effects of JIT and reports findings from a study of the impact of JIT on the content of workers'jobs and on job satisfaction and psychological strain. The introduction of JIT led to a reduction in control over work timing, an increase in production pressure, and a drop in job satisfaction. Contrary to claims in the literature, no changes were found in control over work methods, other aspects of cognitive demands and skill use, and in psychological strain. The study shows that JIT can be implemented without radical changes in job content or adverse impact in terms of employee strain, and the implications of these findings are discussed.

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The aim of this project was to implement a just-in-time hints help system into a real time strategy (RTS) computer game that would deliver information to the user at the time that it would be of the most benefit. The goal of this help system is to improve the user’s learning in terms of their rate of learning, retention and avoidance of stagnation. The first stage of this project was implementing a computer game to incorporate four different types of skill that the user must acquire, namely motor, perceptual, declarative knowledge and strategic. Subsequently, the just-in-time hints help system was incorporated into the game to assess the user’s knowledge and deliver hints accordingly. The final stage of the project was to test the effectiveness of this help system by conducting two phases of testing. The goal of this testing was to demonstrate an increase in the user’s assessment of the helpfulness of the system from phase one to phase two. The results of this testing showed that there was no significant difference in the user’s responses in the two phases. However, when the results were analysed with respect to several categories of hints that were identified, it became apparent that patterns in the data were beginning to emerge. The conclusions of the project were that further testing with a larger sample size would be required to provide more reliable results and that factors such as the user’s skill level and different types of goals should be taken into account.

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While absorption and emission spectroscopy have always been used to detect and characterize molecules and molecular complexes, the availability of ultrashort laser pulses and associated computer-aided optical detection techniques allowed study of chemical processes directly in the time domain at unprecedented time scales, through appearance and disappearance of fluorescence from participating chemical species. Application of such techniques to chemical dynamics in liquids, where many processes occur with picosecond and femtosecond time scales lead to the discovery of a host of new phenomena that in turn led to the development of many new theories. Experiment and theory together provided new and valuable insight into many fundamental chemical processes, like isomerization dynamics, electron and proton transfer reactions, vibrational energy and phase relaxation, photosynthesis, to name just a few. In this article, we shall review a few of such discoveries in attempt to provide a glimpse of the fascinating research employing fluorescence spectroscopy that changed the field of chemical dynamics forever.

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Setup time reduction facilitate the flexibility needed for just-in-time production. An integrated steel mill with meltshop, continuous caster and hot rolling mill is often operated as decoupled processes. Setup time reduction provides the flexibility needed to reduce buffering, shorten lead times and create an integrated process flow. The interdependency of setup times, process flexibility and integration were analysed through system dynamics simulation. The results showed significant reductions of energy consumption and tied capital. It was concluded that setup time reduction in the hot strip mill can aid process integration and hence improve production economy while reducing environmental impact.

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