We consider voluntary disclosure of nonproprietary information. Established research knows two classes of models. Some authors assume that the manager can be fined prohibitively high if she lies. Others assume that no punishment can be imposed. We generalize and unify those approaches and investigate an intermediate class of models. Our main result is that a clustering of reports may occur. Fir...

A procedure, called α-procedure, for the efficient automatic classification of multivariate data is described. It is based on a geometric representation of two learning classes in a proper multi-dimensional rectifying feature space and the stepwise construction of a separating hyperplane in that space. The dimension of the space, i.e. the number of features that is necessary for a successful cl...

In two perception experiments on read German, we investigate how far different accent positions and accent types are related to degrees of perceived givenness both in sentences in isolation and in context. Results reveal a stepwise decrease in the degree of perceived givenness from deaccentuation and prenuclear accents through low and early peak nuclear accents to high and rising nuclear accent...

A method for the production of clean hydrogen is demonstrated. The process consists of two steps involving the decomposition of methane to CO-free hydrogen and surface carbon in the first step followed by steam gasification of this surface carbon in the second step. This process can be operated in cycles and could be an excellent hydrogen source for fuel cells and other devices or processes req...

To produce near-native American English (AE) vowels, Japanese speakers must extend their five vowel system with at least six new vowels. Three experiments have been conducted to acquire both perceptual and acoustic measures about Japanese accented English (JE)vowels. Six non-back vowels of AE in several phonetic environments were recorded from four Japanese male talkers with moderate English sk...

In the last couple of years, there has been renewed interest in systematic methods for the construction of Prolog programs, for example (Gegg-Harrison, 1995), (Kirschenbaum et al., 1996), (Sterling and Yalçinalp, 1996), and (Vasconcelos and Fuchs, 1995). This paper loosely characterises the progression of approaches that have been offered for systematic construction of logic (usually Prolog) pr...

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The selection of an optimal regression model comprising linear combinations of various integer powers of an independent variable (explanatory variables) is considered. The optimal model is defined as the most accurate (minimal variance) stable model, where all parameter estimates of the orthogonalized explanatory variables are significantly different from zero. The potential causes that limit t...

ePCMM (e-Learning Process Capability Maturity Model) is used for evaluating the capability and maturity of an institution engaged in e-Learning based on e-Learning key process areas. It is a stepwise process improvement which can be implemented by both staged model and continues model.

We discuss a nested collection of three superclasses of perfect graphs: near-perfect, rank-perfect, and weakly rank-perfect graphs. For that we start with the description of the stable set polytope for perfect graphs and allow stepwise more general facets for the stable set polytopes of the graphs in each superclass. Membership in those three classes indicates how far a graph is away from being...