146 research outputs found
Assess and give feedback! The effect of using assessment instruments on substance-abuse outpatients' adherence tot treatment
No full textItem does not contain fulltextUniversiteit Gent, 26 januari 2012Promotores : Maeseneer, J. De, Broekaert, E.197 p
De integratief-holistische orthopedagogiek van Professor Eric Broekaert
No full textDit boek is opgedragen aan en belicht het levenswerk van prof. dr. Eric Broekaert (1951-2016), die gedurende zijn hele loopbaan verbonden is geweest aan de Vakgroep Orthopedagogiek van de Universiteit Gent. Het is geen ‘klasssiek’ liber amicorum geworden, maar een boek waarin een aantal belangrijke (in het Nederlands vertaalde) peer-reviewed artikelen van de hand van prof. Broekaert werden verzameld. Deze teksten geven een goed beeld van de achtergronden en evoluties in het denken van prof. Broekaert met betrekking tot de theoretische orthopedagogiek en meer specifiek met betrekking tot zijn integratief-holistische benadering van de handelingsorthopedagogiek. Daarnaast leiden een aantal hoofdstukken, geschreven door medewerkers van de Vakgroep Orthopedagogiek en jarenlange collega’s van prof. Broekaert, het boek in en uit. Het boek is relevant voor iedereen die in orthopedagogische theorievorming én ondersteuning is geïnteresseerd. Volgens de integratief-holistische benadering van prof. Broekaert zijn deze twee elementen (theorie en praktijk) immers delen van hetzelfde geheel
The generalised Liar Paradox: A quantum model and interpretation; Foundations of Science, Archive reference and link
No full textThe formalism of abstracted quantum mechanics is applied in a model of the generalized Liar Paradox. Here, the Liar Paradox, a consistently testable configuration of logical truth properties, is considered a dynamic conceptual entity in the cognitive sphere (Aerts, Broekaert, & Smets, 1999, 2000, Aerts, Broekaert, & Gabora 1999, 2000, 2002). Basically, the intrinsic contextuality of the truth-value of the Liar Paradox is appropriately covered by the abstracted quantum mechanical approach. The formal details of the model are explicited here for the generalized case. We prove the possibility of constructing a quantum model of the m-sentence generalizations of the Liar Paradox. This includes (i) the truth-falsehood state of the m-Liar Paradox can be represented by an embedded 2m-dimensional quantum vector in a (2m) m dimensional complex Hilbert space, with cognitive interactions corresponding to projections, (ii) the construction of a continuous ‘time ’ dynamics is possible: typical truth and falsehood value oscillations are described by Schrödinger evolution, (iii) Kirchoff & von Neumann axioms are satisfied by introduction of ‘truth-value by inference ’ projectors, (iv) time invariance of unmeasured state.
Editorial: Quantum Structures in Cognitive and Social Science
No full textSCOPUS: ed.jinfo:eu-repo/semantics/publishe
Generalizing Prototype Theory: A Formal Quantum Framework
No full textTheories of natural language and concepts have been unable to model the flexibility, creativity, context-dependence, and emergence, exhibited by words, concepts and their combinations. The mathematical formalism of quantum theory has instead been successful in capturing these phenomena such as graded membership, situational meaning, composition of categories, and also more complex decision making situations, which cannot be modeled in traditional probabilistic approaches. We show how a formal quantum approach to concepts and their combinations can provide a powerful extension of prototype theory. We explain how prototypes can interfere in conceptual combinations as a consequence of their contextual interactions, and provide an illustration of this using an intuitive wave-like diagram. This quantum-conceptual approach gives new life to original prototype theory, without however making it a privileged concept theory, as we explain at the end of our paper
Eric Broekaert (1951-2016) : the life and legacy of a TC pioneer and integrative thinker
No full textPurpose - Eric Broekaert passed away shortly after the XVIth European Working group on Drug-Oriented Research (EWODOR)-conference in Rome on 28 September 2016. He was one of the great TC pioneers in Europe, who founded the first TC for addictions in Belgium (De Kiem) and co-founded the European Federation of Therapeutic Communities and EWODOR. He was a respected Professor of "Orthopedagogics" at Ghent University and a Member of the Editorial Collective of Therapeutic Communities: the International Journal of Therapeutic Communities. The paper aims to discuss the overview of the career of Eric Broekaert.
Design/methodology/approach - In this obituary, the authors provide an overview of his career, major achievements and theoretical, methodological and integrative ideas, clustered around four typologies: university professor and scholar; manager and source of inspiration; TC pioneer and believer, and integrative thinker.
Findings - Besides his obvious merits as a TC researcher and advocate, one of his major theoretical contributions has been the introduction of the holistic, integrative approach and the idea that diverse types of interventions, as well as methodological approaches can alternatively go together.
Originality/value - He regarded TCs as the ultimate integration of various educational and therapeutic approaches to promote growth and quality of life among severely disadvantaged populations, such as drug addicts and children and adults with emotional and behavioural disorders
Evaluation of wall heat flux models for full cycle CFD simulation of internal combustion engines under motoring operation
No full textThe present work details a study of the heat flux through the walls of
an internal combustion engine. The determination of this heat flux is
an important aspect in engine optimization, as it influences the
power, efficiency and the emissions of the engine. Therefore, a set of
simulation tools in the OpenFOAM® software has been developed,
that allows the calculation of the heat transfer through engine walls
for ICEs. Normal practice in these types of engine simulations is to
apply a wall function model to calculate the heat flux, rather than
resolving the complete thermo-viscous boundary layer, and perform
simulations of the closed engine cycle. When dealing with a complex
engine, this methodology will reduce the overall computational cost.
It however increases the need to rely on assumptions on both the
initial flow field and the behavior in the near-wall region. As the
engine studied in the present work, a Cooperative Fuel Research
(CFR) engine, is a simple single cylinder pancake engine, it was
possible to implement more complex and numerically demanding
methodologies, while still maintaining an acceptable computation
time. Both closed and full cycle simulations were therefore
performed, for which the heat flux was calculated by both
implementing various wall function models and by resolving the
complete thermo-viscous boundary layer. The results obtained from
the different kind of simulations were then compared to experimental
heat flux data, which was measured using a thermopile type heat flux
sensor in different locations in the CFR engine. By comparing the
results from the different types of simulations, a performance
evaluation of the used methodology could be carried out. It was
found that the heat flux obtained by resolving the thermo-viscous
layer was accurate compared to experiments, while the wall functions
were not able to correctly capture the heat flux. Full cycle simulations
resulted in a slightly improved result, especially when resolving the
boundary layer, but due to the increased computational cost, this
method does not seem beneficial
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