The study examines two dimensions of IT outsourcing contract structure: contract specificity and flexibility. We posit that the contract structures are influenced by (a) relational elements such as prior interactions, current nature of relationship between the contracting parties, and future interactions; and by (b) the attributes of transactions such as investment specificity and task and tech...

Despite a large body of work on XML query processing in relational environment, systematic study of NOT-twig queries has received little attention in the literature. Such queries contain notpredicates and are useful for many real-world applications. In this paper, we present an efficient strategy to evaluate NOT-twig queries with parent-child edges in a schema-oblivious and tree-unaware relatio...

IntroductIon Modeling techniques play an important role in the development of database applications. Well-known entity-relationship modeling and its extensions have become a widely-accepted approach for relational database conceptual design. An object-oriented approach has brought a new view of conceptual modeling. A class as a fundamental concept of the object-oriented approach encapsulates bo...

XML has become a de facto standard for data representation and exchange on the World-Wide-Web. Unlike HTML tags that are mainly used to describe presentations, tags in XML capture some semantics, especially when domain-specific common DTDs are used when authoring XML documents. Since industries are indeed enthusiastic about XML, and more and more XML documents have been generated, we have to de...

In this paper we give relational semantics and an accompanying relational proof system for a variety of intuitionistic substructural logics, including (intuitionistic) linear logic with exponentials. Starting with the (Kripke-style) semantics for FL as discussed in [13], we developed, in [11], a relational semantics and a relational proof system for full Lambek calculus. Here, we take this as a...

IntroductIon Modeling techniques play an important role in the development of database applications. Well-known entity-relationship modeling and its extensions have become a widely-accepted approach for relational database conceptual design. An object-oriented approach has brought a new view of conceptual modeling. A class as a fundamental concept of the object-oriented approach encapsulates bo...

This paper develops an approach for the representation of natural world phenomena within a relational structure. Relational algebra (RA) as the basis for database has been enormously influential and successful in the utilisation of computers in the world of business applications. This success has led to attempts to utilise relational algebra for application of computers to problems of the natur...

BACKGROUND Recent research from a complexity theory perspective suggests that implementation of complex models of care, such as the Chronic Care Model (CCM), requires strong relationships and learning capacities among primary care teams. PURPOSES Our primary aim was to assess the extent to which practice member perceptions of relational coordination and reciprocal learning were associated wit...

Statistical relational learning (SRL) combines state-of-the-art statistical modeling with relational representations. It thereby promises to provide effective machine learning techniques for domains that cannot adequately be described using a propositional representation. Driven by new applications in which data is structured, interrelated, and heterogeneous, this area of machine learning has r...

The pioneer work of image compression/reconstruction based onfuzzy relational equations (ICF) and the related works are introduced. TheICF regards an original image as a fuzzy relation by embedding the brightnesslevel into [0,1]. The compression/reconstruction of ICF correspond to thecomposition/solving inverse problem formulated on fuzzy relational equations.Optimizations of ICF can be consequ...