Data warehouses, multidimensional databases, and OLAP tools are based on the multidimensional (MD) modeling. Lately, several approaches have been proposed to easily capture main MD properties at the conceptual level. These conceptual MD models, together with a precise management of metadata, are the core of any related tool implementation. However, the broad diversity of MD models and managemen...

This study sought to investigate perceptions of students’ conceptual challenges among A-Level statistics teachers and examiners. The nature and extent of participants’ insights were assessed using a questionnaire administered in either written form or via a semi-structured interview. The questionnaire comprised two sections: (i) free-response questions in which participants were asked to list t...

The informational states which a subject acquires through perception are non-conceptual, or non-conceptualized. Judgements based upon such states necessarily involve conceptualization: in moving from a perceptual experience to a judgement about the world (usually expressible in some verbal form), one will be exercising basic conceptual skills. But this formulation (in terms of moving from an ex...

Recent efforts in the Conceptual Modelling community have been devoted to properly capture time-varying information. Various temporally enhanced Entity-Relationship (ER) models have been proposed that are intended to model the temporal aspects of database conceptual schemas. This preliminary work gives a logical formalisation of the various properties that characterise and extend different temp...

By using background knowledge of the general and specific domains and by processing new natural language corpus experts are able to produce a conceptual model for some specific domain. In this paper we present a model that tries to capture some aspects of this conceptual modeling process. This model is functionally organized into two information processing streams: one reflects the process of f...

This paper is the second part of the adjoined papers describing the chain of thoughts leading to plan and implement a terminology system at ECDC – describing the conceptual model of the ECDC terminology system, which is built on a formal ontology backbone. ECDC – an EU scientific agency with the scope of preventing and controlling communicable disease – is an organisation started in 2005. In it...

The algorithmic generation of textual descriptions of image sequences requires conceptual knowledge. In our case, a stationary camera recorded image sequences of road traffic scenes. The necessary conceptual knowledge has been provided in the form of a so-called Situation Graph Tree (SGT). Other endeavors such as the generation of a synthetic image sequence from a textual description or the tra...

Explicit conceptual models are supposed to capture knowledge of lasting value in a reusable form. Reuse of explicit conceptual models is hampered by arbitrary and application-specific constraints; any constraints that conflict with a new application must be altered or removed before the models can be reused. This paper explores seven facets of relativity in explicit conceptual models using Form...

With the advent of recent construction technologies, human civilization is striving for cost effective and time saving design solutions. Conceptual design is the first stepping stone and is arguably the most difficult wherein a tentative shape to the final design is given. High-rise buildings being an important financial enterprise as it involves enormous private and public investment and, most...

Ontology Based Data Access (OBDA) [4] is a paradigm of accessing data trough a conceptual layer. Usually, the conceptual layer is expressed in the form of an RDF(S) [10] or OWL [15] ontology, and the data is stored in relational databases. The terms in the conceptual layer are mapped to the data layer using mappings which associate to each element of the conceptual layer a (possibly complex SQL...