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We propose an interactive approach to data mining meant as the derivation of linguistic summaries of databases. For interactively formulating the linguistic summaries, and then for searching the database, we employ Kacprzyk and Zadrożny's [6-11]) fuzzy querying add-on, FQUERY for Access. We present an implementation for the derivation of linguistic summaries of sales data at a computer retailer.

There is obvious contradiction between the discrete spectrum resource and the high bandwidth requirement. As the key technology of LTE, OFDM (Orthogonal Frequency Division Multiplexing) technology can effectively avoid the frequency selective fading and inter symbol interface by using the orthogonal carrier [1], which improves the transmission accuracy of shortwave data. However the number of orthogonal carriers is limited in OFDM system. Spectrum aggregation technology is an useful technology by extending discrete bands or multiple continuous bands into a wider band to get more resources[2].It's possible to take advantage of these technologies to improve the system capacity. My work is responsible for researching the hardware and software design of interface between DSP and FPGA in the system based on spectrum aggregation technology and OFDM technology. Theoretical study based on MATLAB shows that the test system can improve the information transmission rate. This experimental system is feasible and effective.

In various of teaching activities and propagating activities, it is inevitable that some listeners in certain locations cannot see or cannot see clearly the details of the actual object which are explained so that it impacts understanding effectiveness deeply. In this paper, an portable round display device is introduced. Just with placing the mobile phone in the phone clip, images of actual object could be obtained using the phone's camera. Wireless transmission equipment HDMI transmitter sends the audio and video signals from phone's camera to projector screen. Images of detailed instruction activities are projected clear onto a screen. The main part of the display device is composed of linkages structures, in which main shaft is droved by motor that is fixed on transmission case. Multi-angle observation position of actual object is realized. The all-round display device is simple and practical, as well as it is easy to carry and operate.