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Although it is well known that the variety of all lattices is generated by the subclass of finite lattices, there are lattice varieties which are not generated by their finite members . In fact, there are modular varieties which are not even generated by their finite dimensional members [3]. At the present t ime it is not known if the variety of all modular lattices is generated by its finite o...

In order to maintain the consistency between sources and documentation, while at the same time providing documentation at the design level, it is necessary to generate documentation from sources in such a way that it can be integrated with hand-written documentation. In order to simplify the construction of documentation generators, we introduce island grammars, which only de ne those syntactic...

With the rapid development of sensor technology, various professional sensors are installed on modern machinery to monitor operational processes and assure operational safety, which play an important role in industry and society. In this work a new operational safety assessment approach with wavelet Rényi entropy utilizing sensor-dependent vibration signals is proposed. On the basis of a profes...

Semistable Lévy motions have stationary independent increments with semistable distributions. They can be realized as scaling limits of simple random walks, extending the familiar Lévy motions. Generators of stable semigroups are fractional derivatives, and the semistable generators provide a new approximation to fractional derivatives. Semistable Lévy motions and semistable generators may be u...

We study the structure and point out weaknesses of recently-proposed random number generators based on special types of linear recurrences with small coefficients, which allow fast implementations. Our theoretical analysis is complemented by the results of simple empirical statistical tests that the generators fail decisively. Directions for improvement and alternative generators are also point...

In a set of stochastic simulations, which we collectively call the digit test, we compare the widely used linear congruential with the new inversive random number generators. The inversive generators are found to perform always at least as good as any of the linear congruential generators; in some simulation runs, they perform signiicantly better.

We consider Erdős-Ko-Rado sets of generators in classical finite polar spaces. These are sets of generators that all intersect non-trivially. We characterize the Erdős-Ko-Rado sets of generators of maximum size in all polar spaces, except for H(4n+ 1, q) with n ≥ 2.

This paper analyses dungeons, of the varieties commonly found in role-playing games, into several sets of design patterns at different levels of abstraction. The analysis focuses on mechanical patterns that could be either straightforwardly instantiated or recognized by a well-defined process. At the most concrete level a set of fundamental components were identified, followed by a long list of...