Myles Burnyeat has argued that in De Anima II.5 Aristotle marks out a refined kind of alteration which is to be distinguished from ordinary alteration, change of quality as defined in Physics III.1-3. Aristotle’s aim, he says, is to make it clear that perception is an alteration of this refined sort and not an ordinary alteration. Thus, it both supports his own interpretation of Aristotle’s vie...

A computerized bibliographic research on groundwater artificial recharge is carried out, following the same methodology as implemented in a previous bibliographic research in 1987. The facilities of the electronic instruments offered by the host computers and by the database are investigated. The results are analysed and compared with those of the previous research. A critical review of the res...

In this paper, an optimization algorithm base immune principle is expatiated, explain its basic theory and process. And discuss immune algorithm’s advantage than other heuristic algorithms, such as: genetic algorithm and evolution strategy. And introduce several better algorithms base immune algorithm, present application in optimization problems. At last we propose immune algorithm’s further d...