The bio-activity of barnyardgrass, co-toxicity coefficient, compound basis, rice safety, and the effect of weed control in direct-seeded rice field treated with the compound of bensulfuron-methyl and quinclorac were studied.

This paper summaries the concepts in software and hardware system of color matching system;and details the process of establishing the color matching database for Datacolor computer color matching system and the factors influencing color matching accuracy of solid coatings in computer color matching system.

ICP algorithm and application in the data registration of building scanning point doud;

Wavelet optimization based data registration algorithm in converse engineering

A new multisensor registration algorithm via fuzzy c-mean cluster is presented after analysing some previous multisensor data registrations.

Then an arithmetic flow for spatial vector data matching was put forward based on spatial directions similarity.

Then,we put forward data matching thought based on area similarity and realize area feature matching.

An investigation of data allocation in distributed database design;

This paper briefly introduces the sort of data allocation method in the distributed database and analyzes an example completely with the heuristic method of static schedules.

In this paper, according to the features of parallel object oriented database and asynchronous parallel query execution strategy, a class based hybrid data placement strategy is proposed, which consists of two parts: the hybrid data partition strategy and the class based data allocation strategy.