A finite group G is a DCI-group if, whenever S and S′ are subsets of G with the Cayley graphs Cay(G,S) and Cay(G,S′) isomorphic, there exists an automorphism φ of G with φ(S) = S′. It is a CI-group if this condition holds under the restricted assumption that S = S−1. We extend these definitions to infinite groups, and make two closely-related definitions: an infinite group is a strongly (D)CIf ...

Within the logical-semantical tradition, the meaning of a sentence is (often) equated with its truth conditions: to know what a sentence means is to know in which circumstances it is true or false. In more up-to-date approaches, however, the meaning of a sentence is identified with its context change potential: to know the meaning of a sentence is to know how it changes a context. The differenc...

In this paper we present a simple linear-time algorithm constructing a context-free grammar of size O(g log(N/g)) for the input string, where N is the size of the input string and g the size of the optimal grammar generating this string. The algorithm works for arbitrary size alphabets, but the running time is linear assuming that the alphabet Σ of the input string can be identified with number...

We present a metagrammatical formalism, generic rules, to give a default interpretation to grammar rules. Our formalism introduces a process of dynamic binding interfacing the level of pure grammatical knowledge representation and the parsing level. We present an approach to non-constituent coordination within categorial grammars, and reformulate it as a generic rule. This reformulation is cont...

We examine the role of simplicity in directing the induction of context-free grammars from sample sentences. We present a rational reconstruction of Woll's SNPR { the Grids system { which incorporates a bias toward grammars that minimize description length. The algorithm alternates between merging existing nonterminal symbols and creating new symbols, using a beam search to move from complex to...

One way of verifying a grammar is the detection of ambiguities. Ambiguities are not always unwanted, but they can only be controlled if their sources are known. Unfortunately, the ambiguity problem for context-free grammars is undecidable in the general case. Various ambiguity detection methods (ADMs) exist, but they can never be perfect. In this paper we explore three ADMs to test whether they...

performance appraisal systems are affected by organizational social context. social context consists of tow factors, distal variables, and, proximal variables. distal factors include but are not limited to organizational culture, organizational structure, and, values. proximal variable categorize as both process factors and structural factors. in this paper the process factors were examined. th...

Every diver intuitively understands that the depth, duration and ascent protocol of a dive are perhaps the most important determinants of the risk of decompression illness (DCI). In general, we assume that the longer and deeper the dive, the more nitrogen is absorbed, and the greater the risk; especially if the longer duration and deeper depth are not compensated for with a suitable ascent (dec...

A preliminary analysis of low-energy e + e − collision data produced via initial state radiation (ISR) has been performed using 22 f b −1 of BABAR data. The selection of data samples corresponding to the µ 7π final states accompanied by the emitted ISR hard photon has been demonstrated. The invariant mass of the hadronic final state defines the effective collision c.m. energy, and so BABAR ISR ...