In this paper, the (infinite) direct product of fields is investigated. particular, finiteness a given set characterized in terms some ring-theoretic observations. Next, certain localization (whose multiplicative formed by cofinite sets) studied. Finally, it shown that every X can be made into separated scheme, and scheme an affine if only finite set.

to determine the correlation between grain yield and its components in some grain corn hybrids and their cause and effect relationships in various fertilizer application methods, an experiment was carried out as split plot based on randomized complete block design with two fertilizer application methods (urea foliar application and soil application method), four grain corn hybrids (ns 640, kons...

We present syntactic characterizations of propositional update operators based in the PMA approach Winslett, 1988a, Winslett, 1988b]), and develop algorithms for computing the updated database on the basis of this characterization. Unlike any other previous work in this area, the methods presented here do not require direct manipulation or explicit storage of complete models of the database. Th...

One of the most challenging aspects to designing a Java messaging system for HPC is the intermediate buffering layer. The lower and higher levels of the messaging software use this buffering layer to write and read messages. The Java New I/O package adds the concept of direct buffers, which—coupled with a memory management algorithm—opens the possibility of efficiently implementing this bufferi...