Preconcepts are basic units of knowledge that form the basis formal concepts in concept analysis (FCA). This paper investigates relations among different kinds preconcepts, such as protoconcepts, meet and join-semiconcepts concepts. The first contribution this paper, is to present a fuzzy powerset lattice gradation, coincides with preconcept at its 1-cut. second more significant contribution, i...

This paper examines empirically the causal relationship among the degree of openness of the economy, financial development and economic growth by using a multivariate autoregressive VAR model in Greece for the examined period 1960:Ι – 2000:IV. The results of cointegration analysis suggest that there is one cointegrated vector among GDP, financial development and the degree of openness of the ec...

The characterisation of scholarly communication is dominated by citation-based measures. In this paper we propose several metrics to describe different facets of open access and open research. We discuss measures to represent the public availability of articles along with their archival location, licences, access costs and supporting information. Calculations illustrating these new metrics are ...

Anisotropic dielectric response occurs naturally due to the presence of gradation, like in functionally graded materials or graded biological cells. However, these materials with locally anisotropic dielectric responses can have macroscopically isotropic responses. In treating graded particles of anisotropic materials, traditional isotropic gradation methods need to be modified. In this work, w...

Opening up the Australian economy to international trade has become one of the cornerstones of economic policy over the past decade. Tariff protection and assistance to the manufacturing sector, for instance, have already fallen dramatically and are intended to be reduced to negligible proportions by the end of the century. Whereas average effective rates of assistance were over 20 per cent in ...

We have developed a nonlinear differential effective dipole approximation ~NDEDA!, in an attempt to investigate the effective linear and third-order nonlinear susceptibility of composite media in which graded spherical inclusions with weak nonlinearity are randomly embedded in a linear host medium. Alternatively, based on a first-principles approach, we derived exactly the linear local field in...

In this paper we present the notion of (U, V )-openness and (U, V )metric regularity for a set-valued map, proving their equivalence. By using different approaches we show the stability with respect to the sum of maps of the (U, V )-openness property, both in the setting of Banach spaces, and of metric spaces.

Application developers are of growing importance to ensure that software platforms (e.g. Facebook, Android) gain or maintain a competitive edge. However, despite calls for research to investigate developers’ perspective on platform-centric ecosystems, no research study has been dedicated to identifying the facets that constitute developers’ perception of platform openness. In this paper, we dev...

In the networked information and knowledge society, we see a frequent use of the notions of “open” and “openness”; open source, open region, open economy, open government, open innovation. In parallel we can also observe changes of practises relating to how we produce and exchange products, information, knowledge and culture, enabled by the knowledge society, information technology and the Inte...