86,810 research outputs found
Duhem, Quine and the other dogma
Full text linkBy linking meaning and analyticity (through synonymy), Quine rejects both “dogmas of empiricism” together, as “two sides of a single dubious coin.” His rejection of the second (“reductionism”) has been associated with Duhem’s argument against crucial experiments — which relies on fundamental differences, brought up again and again, between mathematics and physics. The other dogma rejected by Quine is the “cleavage between analytic and synthetic truths”; but aren’t the truths of mathematics analytic, those of physics synthetic? Exploiting Quine’s association of essences, meaning, synonymy and analyticity, and appealing to a ‘model-theoretical’ notion of abstract test derived from Duhem and Quine — which can be used to overcome their holism by separating essences from accidents — I reconsider the ‘crucial experiment,’ the aforementioned “cleavage,” and the differences Duhem attributed to mathematics and physics; and propose a characterisation of the meaning and reference of sentences, which extends, in a natural way, the distinction as it applies to words
Did F. A. Hayek Embrace Popperian Falsificationism? A Critical Comment About Certain Theses of Popper, Duhem and Austrian Methodology
Full text linkHayek´s methodological outlook at the time he engaged in business cycle research was actually closer to praxeological apriorism than to Popperian falsificationism. A consideration of the Duhem thesis highlights the fact that even from a mainstream methodological perspective falsificationism is more problematic than is often realized. Even if the praxeological and mainstream lines of argumentation reject the Popperian emphasis on falsification for different reasons and from a different background, the prospects for falsificationism in economic methodology seem rather bleak.General methodology; falsificationism; Popper; Hayek; Duhem; Duhemian Argument; Testing of Theories; Meaning and Interpretation of Econometric Results; Correlation and Causality;
Duhem, Quine and the other dogma
Full text linkBy linking meaning and analyticity (through synonymy), Quine rejects both “dogmas of empiricism” together, as “two sides of a single dubious coin.” His rejection of the second (“reductionism”) has been associated with Duhem’s argument against crucial experiments — which relies on fundamental differences, brought up again and again, between mathematics and physics. The other dogma rejected by Quine is the “cleavage between analytic and synthetic truths”; but aren’t the truths of mathematics analytic, those of physics synthetic? Exploiting Quine’s association of essences, meaning, synonymy and analyticity, and appealing to a ‘model-theoretical’ notion of abstract test derived from Duhem and Quine — which can be used to overcome their holism by separating essences from accidents — I reconsider the ‘crucial experiment,’ the aforementioned “cleavage,” and the differences Duhem attributed to mathematics and physics; and propose a characterisation of the meaning and reference of sentences, which extends, in a natural way, the distinction as it applies to words
F. Aballea, E. Auclair, La professionnalité dans les transports collectifs urbains : le cas de Via-Transexel, Septembre 1988
No full textDuhem Bernard. F. Aballea, E. Auclair, La professionnalité dans les transports collectifs urbains : le cas de Via-Transexel, Septembre 1988. In: Les Annales de la recherche urbaine, N°41, 1989. Familles et patrimoines. p. 120
F. Aballea, E. Auclair, La professionnalité dans les transports collectifs urbains : le cas de Via-Transexel, Septembre 1988
No full textDuhem Bernard. F. Aballea, E. Auclair, La professionnalité dans les transports collectifs urbains : le cas de Via-Transexel, Septembre 1988. In: Les Annales de la recherche urbaine, N°41, 1989. Familles et patrimoines. p. 120
G. Dupuy en collaboration avec D. Albini, T. Bodard, A. Costa, F. Lozada, P. Panod, La crise des réseaux d'infrastructure : le cas de Buenos Aires, juillet 1987
No full textDuhem Bernard. G. Dupuy en collaboration avec D. Albini, T. Bodard, A. Costa, F. Lozada, P. Panod, La crise des réseaux d'infrastructure : le cas de Buenos Aires, juillet 1987. In: Les Annales de la recherche urbaine, N°35-36, 1987. Chômages, mutations, territoires. p. 120
Le sous-sol de Paris et de l'Ile-de-France, Cahiers du C R E-P I F (Centre de Recherches et d'Etudes sur Paris et l'Ile-de-France) n° 23, juin 1988
No full textDuhem Bernard. Le sous-sol de Paris et de l'Ile-de-France, Cahiers du C R E-P I F (Centre de Recherches et d'Etudes sur Paris et l'Ile-de-France) n° 23, juin 1988. In: Les Annales de la recherche urbaine, N°40, 1988. Risques et périls. p. 118
Research on Hysteresis of Piezoceramic Actuator Based on the Duhem Model
Full text linkTo improve the modeling accuracy of piezoceramic actuator in the precision positioning system, the Duhem hysteretic model of the piezoceramic actuator was proposed. The paper used the polynomial function to approach the piecewise continuous function and f(v) and g(v) in the Duhem model, adopted recursive least squares algorithm and gradient correction algorithm to identify parameter α, polynomial coefficients of f and g in the Duhem model, and established the nonlinear parametric model of the piezoceramic actuator. Contrasting the simulation results of recursive least squares algorithm and gradient correction algorithm, the modeling accuracy is 0.24% when adopting the recursive least squares algorithm, and the modeling accuracy is 0.11% when adopting the gradient correction method. The result showed that the gradient correction algorithm could meet the modeling accuracy better, and the structure of the algorithm is simple, adaptable, and easy to implement
Modeling and analysis of Duhem hysteresis operators with butterfly loops
Full text linkIn this work we study and analyze a class of Duhem hysteresis operators that can exhibit butterfly loops. We study firstly the consistency property of such operator which corresponds to the existence of an attractive periodic solution when the operator is subject to a periodic input signal. Subsequently, we study the two defining functions of the Duhem operator such that the corresponding periodic solutions can admit a butterfly input-output phase plot. We present a number of examples where the Duhem butterfly hysteresis operators are constructed using two zero-level set curves that satisfy some mild conditions
Pierre Duhem and scientific truth: contextual, partial and real
Full text linkMariano Artigas understood scientific truth as real, but at the same time contextual and partial. Artigas shared some research interests and a general outlook with Pierre Duhem. We summarize the evaluation of Duhem’s thought by relevant authors and demonstrate how the way Artigas understood scientific truth in actual scientific research offers a suitable framework for capturing the realism towards which Duhem tended. This reading of Duhem runs counter to tendencies of the philosophy of science in Duhem’s time which employed expressions that sometimes framed him as a conventionalist
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