The corporate data warehouse integrates data from various operational data stores of a company. These operational data stores may be heterogeneous with respect to the represented information. The hetero-homogeneous data warehouse modeling approach overcomes issues associated with the integration of heterogeneous information from the operational data stores by featuring a generally homogeneous s...

Ideas of reference are considered hallmarks of schizophrenia-related psychopathology. However, the specificity of referential thinking to schizophrenia-related psychopathology has not been examined empirically. Schizotypy reflects the latent liability for schizophrenia and is associated with referential thinking. Referential thinking may occur in other forms of psychopatholoy, such as social an...

(2) Socrates is a man are semantic, and not merely syntactic, constituents of (1); someone who does not understand that name or that predicate does not understand (1). In this respect (1) differs from the metalinguistic “Socrates is a man” is a necessary truth in English. (b) Intuitively, also, (1) results from the application of a sentential operator “necessarily” to (2) at least somewhat as S...

It is widely known that closure operators on finite sets can be represented by sets of implications (also known as inclusion dependencies) as well as by formal contexts. In this article, we consider these two representation types, as well as generalizations of them: extended implication sets and context families. We discuss the mutual succinctness of these four representations and the tractabil...

In this chapter, three semantics-based schema conversion methods are presented: 1) CPI converts an XML schema to a relational schema while preserving semantic constraints of the original XML schema, 2) NeT derives a nested structured XML schema from a flat relational schema by repeatedly applying the nest operator so that the resulting XML schema becomes hierarchical, and 3) CoT takes a relatio...

Sequential embedding of metal complexes 4?-(pyridin-4-yl)-2,2?:6?,2??-terpyridine to a surface-enhanced supports pre-functionalized with templating layer results in hetero-bimetallic (Os–Fe, Co–Fe) and hetero-trimetallic (Co–Os–Fe) monolayer materials.

(diacetoxyiodo)benzene has been used as an efficient catalyst for an improved and rapid one-pot synthesis of biscoumarin derivatives in excellent yield under reflux condition using water as a environmentally benign reaction medium. this aqua mediated knoevenagel condensation of various aromatic and hetero-aromatic aldehydes with 4-hydroxycoumarin using catalytic amount of (diacetoxyiodo)benzene...

Received 4 March 2005 Authors were partially supported by Spanish grant DGESIC BFM2001-3329 and Catalan grant 2001SGR-00017. The second author was also supported by Catalan grant 2001FI 64 RAMON JANSANA, ALESSANDRA PALMIGIANO

An efficient Pd-catalyzed one-pot desulfinative cross-coupling to access medicinally relevant di(hetero)arylmethanes is reported. The method reductant-free, and involves a sulfinate transfer reagent Pd-catalyst mediating the union of two electrophilic coupling partners; (hetero)aryl halide benzyl halide. We establish for first time that sulfinates, generated in situ, undergo with halides genera...

The relational model of data incorporates fundamental assertions for entity integrity and referential integrity. Recently, these so-called relational invariants were more precisely specified by the new SQL2 standard. Accordingly, they have to be guaranteed by a relational DBMS to its users and, therefore, all issues of semantics and implementation became very important. The specification of ref...