1,721,129 research outputs found
Van Campenhoudt (L.), Cohen (M.), Guizzardi (G.), Hausser (D.) — Sexual Interactions and HIV risk, New conceptual perspectives in European Research
No full textPaichelier Geneviève. Van Campenhoudt (L.), Cohen (M.), Guizzardi (G.), Hausser (D.) — Sexual Interactions and HIV risk, New conceptual perspectives in European Research. In: Population, 52ᵉ année, n°6, 1997. pp. 1557-1559
Van Campenhoudt (L.), Cohen (M.), Guizzardi (G.), Hausser (D.) — Sexual Interactions and HIV risk, New conceptual perspectives in European Research
No full textPaichelier Geneviève. Van Campenhoudt (L.), Cohen (M.), Guizzardi (G.), Hausser (D.) — Sexual Interactions and HIV risk, New conceptual perspectives in European Research. In: Population, 52ᵉ année, n°6, 1997. pp. 1557-1559
Towards a first-order modal formalisation of the unified foundational ontology
No full textIn this paper, we present a succinct formalisation of the main categories of the Unified Foundational Ontology (UFO) by summarising and simplifying a fragment of the version of [Gui05]. In this version, we show that the use first-order modal logic with no higher-order constructs suffices for many modelling tasks. We focus here on the case of universals.We slightly modify the original version of UFO by presenting new definitions of the intension and of the extension of universals and by approaching a taxonomy of universals
LA MEDECINE QUI CHANGE. LE DEBAT SUR LES MEDICINES ALTERNATIVES
Full text linkL'articolo sintetizza i risultati della ricerca prin "Trasformazioni del sapere medico", soprattutto per quanto riguarda la rappresentazione televisiva delle medicine non convenzionali
On weak truthmaking
No full textInformally speaking, a truthmaker is something in the world in virtue of which the sentences of a language can be made true. This fundamental philosophical notion plays a central role in applied ontology. In particular, a recent non-orthodox formulation of this notion proposed by the philosopher Josh Parsons, which we labelled weak truthamking, has been shown to be extremely useful in addressing a number of classical problems in the area of Conceptual Modeling. In this paper, after revisiting the classical notion of truthmaking, we conduct an in depth analysis of Parsons’ account of weak truthmaking. By doing that, we expose some difficulties in his original formulation. As the main contribution of this paper, we propose solutions to address these issues which are then integrated in a new precise interpretation of truthmaking that is harmonizable with commonsense as well as with existing four-category foundational ontologies
Towards an Ontological Modelling of Preference Relations
Full text linkPreference relations are intensively studied in Economics,
but they are also approached in AI, Knowledge Representation, and
Conceptual Modelling, as they provide a key concept in a variety of
domains of application. In this paper, we propose an ontological foundation
of preference relations to formalise their essential aspects across
domains. Firstly, we shall discuss what is the ontological status of the
relata of a preference relation. Secondly, we investigate the place of preference
relations within a rich taxonomy of relations (e.g. we ask whether
they are internal or external, essential or contingent, descriptive or nondescriptive
relations). Finally, we provide an ontological modelling of
preference relation as a module of a foundational (or upper) ontology
(viz. OntoUML).
The aim of this paper is to provide a sharable foundational theory of
preference relation that foster interoperability across the heterogeneous
domains of application of preference relations
Towards a Cognitive Semantics of Types
Full text linkTypes are a crucial concept in conceptual modelling, logic, and knowledge representation as they are an ubiquitous device to un- derstand and formalise the classification of objects. We propose a logical treatment of types based on a cognitively inspired modelling that ac- counts for the amount of information that is actually available to a cer- tain agent in the task of classification. We develop a predicative modal logic whose semantics is based on conceptual spaces that model the ac- tual information that a cognitive agent has about objects, types, and the classification of an object under a certain type. In particular, we ac- count for possible failures in the classification, for the lack of sufficient information, and for some aspects related to vagueness
Simple and general synthesis of new 11H-11λ5-dibenzo[c, f][1,2,5]dithiaphosphepine derivatives
No full textTreatment at room temperature of benzothiadiphosphole 1 with bis-Grignard 2 gives intermediate A, which after 3 h gives intermediate A′. Subsequent addition of RMgX or sodium alcoholate and final treatment with S8 and water affords the title compounds 5 in good yields. From the reaction mixture it is also possible to obtain the cyclic phosphine sulfide 6 or its dimeric form 7. © 2002 Elsevier Science Ltd. All rights reserved
Traditionally vs sonographically coached pushing in second stage of labor: a pilot randomized controlled trial
No full textObjective: To investigate the usefulness of visual biofeedback using transperineal ultrasound to improve coached pushing during the active second stage of labor in nulliparous women. Methods: This was a randomized controlled trial of low-risk nulliparous women in the active second stage of labor. Patients were allocated to either coached pushing aided by visual demonstration on transperineal ultrasound of the progress of the fetal head (sonographic coaching) or traditional coaching. Patients in both groups were coached by an obstetrician for the first 20 min of the active second stage of labor and, subsequently, the labor was supervised by a midwife. Primary outcomes were duration of the active second stage and increase in the angle of progression at the end of the coaching process. Secondary outcomes included the incidence of operative delivery and complications of labor. Results: Forty women were recruited into the study. Those who received sonographic coaching had a shorter active phase of the second stage (30 min (interquartile range (IQR), 24–42 min) vs 45 min (IQR, 39–55 min); P = 0.01) and a greater increase in the angle of progression (13.5° (IQR, 9–20°) vs 5° (IQR, 3–9.5°); P = 0.01) in the first 20 min of the active second stage of labor than did those who had traditional coaching. No differences were found in the secondary outcomes between the two groups. Conclusion: Our preliminary data suggest that transperineal ultrasound may be a useful adjunct to coached pushing during the active second stage of labor. Further studies are required to confirm these findings and better define the benefits of this approach. Copyright © 2018 ISUOG. Published by John Wiley & Sons Ltd
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