Our previous research on one-probe access to large collections of data indexed by alphanumeric keys has produced the first practical minimal perfect hash functions for this problem. Here, a new algorithm is described for quickly finding minimal perfect hash functions whose specification space is very close to the theoretical lower bound, i.e., around 2 bits per key. The various stages of processing are detailed, along with analytical and empirical results, including timing for a set of over 3.8 million keys that was processed on a NeXTstation in about 6 hours.
Electrochemical polymerization is an effective method for the preparation of conductive polymer materials. BFEE solutions are used in preparation of various high-performance conductive heteroaromatic polymers materials as mixed electrolytes, and BFEE can effectively reduce the oxidation potential of monomer. This paper reviews the research on electrochemical polymerization of heteroaromatic polymers with BFEE mixed electrolyte solution in recent years, and prospects the further development direction and application of the electrochemical polymerization of heteroaromatic polymers.
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