In order to realize the idea of the Semantic Web, many tools and technologies need to be developed, including a query language. One of the most important technologies that creates a base for the Semantic Web is the RDF (Resource Description Framework). There are many query languages for the RDF, but almost all of them are very weak and they can not be used for a general purpose. In this paper, ...

Abstract What is the place of voluntary self-regulation in today’s international trade? Can we continue to understand contract its relation historical unity state and law considering massive transformation closely related dichotomies between national international, public private, hard soft law? role corporate social responsibility (CSR) contemporary debate over global value chains (GVCs)? This...

If D is a tame central division algebra over a Henselian valued field F , then the valuation on D yields an associated graded ring GD which is a graded division ring and is also central and graded simple over GF . After proving some properties of graded central simple algebras over a graded field (including a cohomological characterization of its graded Brauer group), it is proved that the map ...

We use recent advances in the multiple testing literature to identify those countries for which Purchasing Power Parity (PPP) held over the last century. The approach controls the multiplicity problem inherent in simultaneously testing for PPP on several time series, thereby avoiding spurious rejections. It has higher power than traditional multiple testing techniques by exploiting the dependen...

Context: Quality assurance of business process models has been recognized as an important factor for modeling success at an enterprise level. Since quality of models might be subject to different interpretations, it should be addressed in the most objective way, by the application of measures. That said, however, assessment of measurement results is not a straightforward task: it requires the i...