In this paper we study residual solvability of the amalgamated product of two finitely generated free groups, in the case of doubles. We find conditions where this kind of structure is residually solvable, and show that in general this is not the case. However this kind of structure is always meta-residually-solvable.

At present, a single viable population of endangered African wild dogs occurs in South Africa, in the Kruger National Park. Current conservation efforts focus on reintroducing wild dogs into a series of fenced reserves, thereby creating a meta-population in which sub-populations are actively managed to conserve genetic diversity. Additional options exist for conserving wild dogs outside protect...

In this paper, we propose a multimedia script language named ́Meta Scriptμ, which describes the structures of movies based on the counterpoint theory in music. As a case study, we describe a structure of Bach·s ́3 Part Invention No. 4μ with Meta Script, and produce a movie according to the script. From this experiment, we confirm that Meta Script works well as a counterpoint structure descripti...

Since the mid-1980s, the Dutch government has placed increasing emphasis on crime prevention to curb the rising crime rate. New local, regional and national projects have been Implemented. Some significant developments In terms of processes and outcomes of the crime prevention efforts are reviewed. Four examples of successful projects are discussed (prevention of shopping center deterioration, ...

Different estimation methods for covariance parameters in meta-analyses can result in conflicting p-values concerning the test of treatment effect. We propose a valid method to overcome this problem at least partially by introducing a new estimator for the standard deviation of the common treatment difference.

Since more than a decade, various conceptions of intellectual capital reporting have been presented in both the academic and practitioner’s literature. As the evolving concepts of reporting can most certainly not be compared with each other, the real value of those reports cannot be unfolded by investors and stakeholders in general. When looking at the discrepancy between an enterprise’s market...

Algorithmic meta-theorems state that certain families of algorithmic problems, usually defined in terms of logic, can be solved efficiently. This is a survey of algorithmic meta-theorems, highlighting the general methods available to prove such theorems rather than specific results.

The aim of this study was to investigate some assumptions related to Gottman's model of parental meta-emotions on a sample of preschool children's parents. The study included 506 parents. The questionnaires about parental meta-emotions, dimensions of temperament and children's internalising and externalising problems were completed by mothers and fathers separately. Mothers' and fathers' awaren...