Results 41 to 50 of about 21,646,523 (374)

Conceptual modelling: framework, principles, and future research [PDF]

open access: yes, 2007
The conceptual modelling task in a simulation project is very important and yet is still generally regarded as more of an art than a science. The meaning and nature of conceptual modelling are discussed and a framework set out.
Brooks, R J
core  

A cookbook for temporal conceptual data modelling with description logic [PDF]

open access: yes, 2014
We design temporal description logics suitable for reasoning about temporal conceptual data models and investigate their computational complexity. Our formalisms are based on DL-Lite logics with three types of concept inclusions (ranging from atomic ...
Artale, A.   +3 more
core   +2 more sources

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

open access: yesPopulation Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

Abstraction and context in concept representation [PDF]

open access: yes, 2003
This paper develops the notion of abstraction in the context of the psychology of concepts, and discusses its relation to context dependence in knowledge representation.
Hampton, J. A.
core   +2 more sources

Network topology drives population temporal variability in experimental habitat networks

open access: yesPopulation Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu   +3 more
wiley   +1 more source

Conceptual modelling of sustainable Vilnius development

open access: yesTechnological and Economic Development of Economy, 2009
This research consists of 5 stages: comparative description of the sustainable urban development in developed countries and in Vilnius; a comparison and contrast of sustainable urban development in developed countries and Vilnius; a development of some ...
Arturas Kaklauskas   +2 more
doaj   +1 more source

Developing Ontological Theories for Conceptual Models using Qualitative Research [PDF]

open access: yes, 2005
Conceptual modelling is believed to be at the core of the IS discipline. There have been attempts to develop theoretical foundations for conceptual models, in particular ontological models as axiomatic reference systems.
Recker, Jan
core   +1 more source

Conceptual modelling styles

open access: yesITI 2002. Proceedings of the 24th International Conference on Information Technology Interfaces (IEEE Cat. No.02EX534), 2003
Three steps in data modelling include conceptual, logical and physical modelling. The conceptual modelling models data from the users&#8217 ; ; perspective independently from any logical and physical implementation. The paper discusses different conceptual modelling styles that may apply in modelling transactional and analytical information system.
openaire   +3 more sources

FoxO1 signaling in B cell malignancies and its therapeutic targeting

open access: yesFEBS Letters, EarlyView.
FoxO1 has context‐specific tumor suppressor or oncogenic character in myeloid and B cell malignancies. This includes tumor‐promoting properties such as stemness maintenance and DNA damage tolerance in acute leukemias, or regulation of cell proliferation and survival, or migration in mature B cell malignancies.
Krystof Hlavac   +3 more
wiley   +1 more source

Data Modelling and Conceptual Modelling: a comparative analysis of functionality and roles

open access: yesРоссийские биомедицинские исследования, 2016
This paper reviews the functionality associated "data modelling" and "conceptual modelling". The history and origins of each term are considered, together with the current interpretation of each term.
Karen Bauman
doaj   +2 more sources

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