Electric Community Currency systems have emerged as part of the electric settlement system. The same technologies that had used in business are now widely employed to community currency system. Some of them utilize the technology of electric money based on IC-card system while others utilize web-based bookkeeping system. This research envisages describing recent trend of cybernation of these community currency system while considering the impact and future consequences of its development.

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Human-friendly Liquid Crystal Displays (^*LCD) are developed, recently. A newly developed culture combining a light conduction plate of LCD technologies worked well for CO_2 fixation and utilization to mitigate global warming problems. The injected light energy was effectively served to the whole area into the culture without mechanical energy such as stirring the fluid and the light energy efficiency of this system was obtained up to 60% of the theoretical value.

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This paper is concerned with the evaluation method of environmental and economic performances of manufacturing. The method of environmental inventory analysis is explained for two types of products life cycle models. Then, the importance of information disclosure of product environmental performance is described so that the product user can take into consideration the impacts in its inventory analysis. Further, the relationship between environmental and economic performances is analyzed and the environment conscious policies are developed for various situations.

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