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We propose a system for reminding a user of information obtained through a web browsing experience. The system extracts keywords from the content of the web page currently being viewed and retrieves the context of past web browsing related to the keywords. We define the context as a sequence of web browsing when many web pages related to the keyword were viewed intensively because we assume that a lot of information connected to the current content was obtained in the sequence. The information is not only what pages you viewed but also how you found those pages and what knowledge you acquired from them. Specifically, when you browse web pages, this system automatically displays a list of the contexts judged to be important in relation to the current web page. If you select the context, details of the context are shown graphically with marks indicating characteristic activities.

We present an electrophotography process(EP) control method using fuzzy theory and a neural network to control the toner supply and maintain the latent-image [l]. Although the accuracy and stability of the voltage control system is satisfiable, a response delay to control the copy density is not compensated by the toner supply control. In this paper, a developing bias control is applied to stabilize the copy density against the fluctuation of the toner concentration.