Search results for "Classical"

Un exemple de don et de contre-don : la bibliothèque de Timgad et M. Iulius Quintianus Flauius Rogatianus

2013

International audience

Pline le Jeune et les sociétés provinciales. Les recommandations d’un « spécialiste » de la Bétique à Calestrius Tiro, nouveau proconsul

2008

International audience

L’autel des frères Philènes, un monumentum de confins

2014

International audience

Introduction

2014

Introduction

2013

An Institutionalist's Journey into the Years of High Theory: John Maurice Clark on the Accelerator-Multiplier Interaction

2007

A few years ago, an article by Arnold Heertje and Peter Heemeijer (2002) triggered an articulate and stimulating debate among scholars on the intellectual origins of Paul Samuelson's multiplier-accelerator model (1939a, 1939b). The discussion, which involved the participation of Samuelson himself, centered on whether, and to what extent, Samuelson's 1939 seminal contributions were inspired by Roy Harrod'sThe Trade Cycle(1936). Heertje and Heemeijer argue that “there is little factual support for Samuelson's suggestion ascribing the model mainly to Alvin Hansen, his mentor in the days of the creation of the model” (Heertje and Heemeijer 2002, p. 207). Instead, they provide convincing evidenc…

Rational vs historical reconstructions. A note on Blaug

2003

The paper focuses on Blaug's distinction between rational and historical reconstruction within the historiography of economics. Blaug's distinction is shown to be sterile and misleading and his definitions of no avail to clear thinking. Historical reconstruction (as defined by Blaug) is en empty box for reasons which are basically theoretical and not simply practical (as Blaug seems to hold). Moreover, Blaug's primary polemical target is Whig historiography and not rational reconstruction: the two concepts coincide only by means of an ad hoc definition. Blaug's criticism does not apply to other uses of the concept of rational reconstruction such as that proposed by Lakatos.

A partial elucidation of the gauge principle

2008

The elucidation of the gauge principle "is the most pressing problem in current philosophy of physics" said Michael Redhead in 2003. This paper argues for two points that contribute to this elucidation in the context of Yang–Mills theories. (1) Yang–Mills theories, including quantum electrodynamics, form a class. They should be interpreted together. To focus on electrodynamics is potentially misleading. (2) The essential role of gauge and BRST symmetries is to provide a local field theory that can be quantized and would be equivalent to the quantization of the non-local reduced theory. If this is correct, the gauge symmetry is significant, not so much because it implies ontological conseque…

Finite-range separable pairing interaction within the new N3LO DFT approach

2011

For over four decades, the Skyrme functional within various parametrizations has been used to calculate nuclear properties. In the last few years there was a number of attempts to improve its performance and introduce generalized forms. In particular, the most general phenomenological quasi-local energy density functional, which contains all combinations of density, spin-density, and their derivatives up to the sixth order (N3LO), was proposed in [1]. Since in the phenomenological-functional approaches, the particle-particle (pp) channel is treated independently of the particle-hole (ph) channel, there remains a question of what pairing interaction is suitable to use within the N3LO energy …

Die Embryologie im Spannungsfeld zwischen Tradition und Empirie.

1991

Already in classical antiquity people dealt with the principle of formation, developing different theories. Researchers in the renaissance, working in the conflict zone between tradition and experience, tried to prove one or the other of these theories by the means of new observations, especially of chicken development. Aldrovandi was the first to see the real principle of formation of the hen's egg, i. e. the blastodisc, but he didn't recognize the importance of his discovery due to his close adherence to Aristotle in the theoretical field. Fabricius even thought that traditional knowledge was of more importance than his own excellent observations. Parisano was the first to succeed in maki…