The Semantic Web has a huge potential when it is used to organize market processes. The labour market is an excellent example where it can add value. By enhancing communication between employers and job seekers in the digital age, market processes become more efficient and more people can find the right jobs for them. The multilingual classification of European Skills, Competences, Qualificatio...

The Mathematics Subject Classification (MSC) is a widely used scheme for classifying documents in mathematics by subject. Its traditional, idiosyncratic conceptualization and representation makes the scheme hard to maintain and requires custom implementations of search, query and annotation support. This limits uptake e.g. in semantic web technologies in general and the creation and exploration...

Service-oriented manufacturing systems need to be supported by formal reference models for effective service description, discovery, and composition. A reference model should evolve continuously throughout its lifecycle to respond to changing requirements. The objective of this work is to propose a formal process for collaborative and community-based reference-model evolution and identify the c...

Simple Knowledge Organization System (SKOS) vocabularies are commonly used to represent lightweight conceptual vocabularies such as taxonomies, classifications and thesauri on the Web of Data. We have analyzed 14 such vocabularies and found most of them to contain structural errors. Our tool, Skosify, can be used to automatically validate SKOS vocabularies and correct many problems, helping to ...

The Simple Knowledge Organization System (SKOS) is popular for expressing controlled vocabularies for their use in Semantic Web applications. Using SKOS, concepts can be linked to other concepts and organized into hierarchies inside a single terminology system. Meanwhile, expressing mappings between concepts in different terminology systems is also possible with SKOS mapping properties. This po...

The Mathematics Subject Classification (MSC) is a widely used scheme for classifying documents in mathematics by subject. Its traditional, idiosyncratic conceptualization and representation makes the scheme hard to maintain and requires custom implementations of search, query and annotation support. This limits uptake e.g. in semantic web technologies in general and the creation and exploration...

Semantic Web technologies provide innovative means for organizing, describing, and managing digital resources in a wide range of formats. From this perspective, Linked Data has recently gained some attention in the supply chain management field as an effective way to provide and share data across all the value chain. Semantic Web technologies can support the seamless integration of data, on-the...

In this paper, we show how Semantic Web techniques can help to solve semantic interoperability issues in the cultural heritage domain. In particular, these techniques can enable integrated access to heterogeneous collections by representing their controlled description vocabularies (e.g. thesauri) in a standardized format – Simple Knowledge Organization System (SKOS). We also present existing a...

A simple highly versatile and efficient sonochemical synthesis of 1,2,4,5-tetrasubstituted and 2,4,5-trisubstituted imidazoles is achieved by condensation of 1,2-dicarbonyl compound, aldehyde, ammonium acetate and primary amine using antimony trichloride immobilized on silica gel (SiO2-OSbCl2) as a catalyst in ethanol at moderate temperature. Operational simplicity, practicability and applicabi...

It is our contention that the World Wide Web poses challenges to knowledge representation systems that fundamentally change the way we should design KR languages. In this paper, we describe the Simple HTML Ontology Extensions (SHOE), a KR language which allows web pages to be annotated with semantics. We present a formalism for the language and discuss the features which make it well suited for...