Newer posts are loading.
You are at the newest post.
Click here to check if anything new just came in.

February 08 2013

O. Dubouclez, Descartes et la voie de l'analyse
Olivier Dubouclez, Descartes et la voie de l'analyse Paris : PUF, coll. "Épiméthée", 2013. 400 p. EAN 9782130606345. Prix 34EUR Présentation de l'éditeur : On a pris l’habitude de voir en l’analyse un instrument logique de décomposition et de clarification des concepts, confirmant du même coup l’évaluation critique qu’en a donnée Kant: l’analyse est un procédé stérile qui ne contribue en rien à l’expansion et au renouvellement des connaissances. Soulignant la cohérence de ses emplois historiques, le présent ouvrage cherche au contraire à rétablir l’analyse en sa fonction inventive: de l’Antiquité au XVIIe siècle, la méthode analytique constitue, en effet, une solution aux insuffisances de la déduction logique s’appuyant sur la construction et le déchiffrement des figures, elle offre une voie à la fois détournée et probante pour la résolution des problèmes. Descartes est l’héritier de cette tradition, mais il est aussi, à maints égards, l’artisan de la conception moderne de l’analyse dont il a fait la voie privilégiée de la connaissance de soi dans les Méditations métaphysiques . Accomplissement heuristique de «l’ordre des raisons» mais aussi aventure temporelle inscrite dans la durée féconde de la méditation, l’analyse se révèle alors l’instrument d’une raison radicalement inventive.
Reposted from02mysoup-aa 02mysoup-aa

February 05 2013

De Proclus à Nicolas de Cues : Raymond Klibansky et la tradition platonicienne.

https://philomtl.wordpress.com/2013/01/27/de-proclus-nicolas-de-cues-raymond-klibansky-et-la-tradition-platonicienne/

Conférence publique suivie d’une discussion. 

Par Georges Leroux (professeur émérite, Département de philosophie, UQÀM) : 
Vendredi 15 février 2013, 
16h30. 
Salle B-2305, Pavillon 3200 rue Jean-Brillant, 

Université de Montréal (métros Université-de Montréal ou Côte-des-Neiges).

 

-----------------------------

 

Inventeur et éditeur à 24 ans de la version latine du « Commentaire sur le Parménide » de Proclus (dont la partie finale ne nous est pas parvenue dans l’original grec), auteur d’une thèse (Heidelberg, 1928) sur "l’École de Chartres" du xiie s., Raymond Klibansky (1906-2006) doit fuir l’Allemagne à l’avènement du nazisme (mais non cependant sans réussir à faire passer en Angleterre la bibliothèque de l’Institut Warburg).

Après avoir travaillé pendant la guerre pour les services de propagande et de renseignement britanniques, il s’établit à Montréal où il enseignera la philosophie à l’Université McGill de 1946 à 1975.

 

-----------------------------

 

// oAnth:

 

(1) http://www.raymondklibanskywebpage.org/biography

(2) http://www.raymondklibanskywebpage.org/bibliography

 

For a complete bibliography till 2002, see:

 

Michael J. Whalley and Désirée Park, “Bibliography of Raymond Klibansky”, Revue internationale de philosophie, vol. 111-112, 1975, p. 167-174.

 

“Bibliography of Raymond Klibansky”, in Ethel Groffier and Michel Paradis (eds) The Notion of Tolerance and Human Rights, Carleton University Press: Ottawa 1991, p. 165-174.

 

Martin Thurner, “Raymond Klibansky (1905)”, in Jaume Aurell and Francisco Crosas (eds), Brepols: Turnhout 2005, p.264-270.

 

EDITIONS AND BOOKS

 

[...]



January 31 2012

Little Ice Age was caused by volcanism

Some of the iconic winter landscapes by Pieter Bruegel the Elder are more than just fine examples of sixteenth-century Dutch art. Paintings such as Bruegel’s Hunters in the Snow (1565) also serve as vivid evidence for the ‘Little Ice Age’, a period of cold climate conditions and glacier advances in Europe and elsewhere that lasted from the late Middle Ages until the nineteenth century.

There has been quite some debate over the years about the precise onset and the physical causes of this extended cold spell, with one school of thought favouring low solar activity during the ‘Maunder Minimum’ and another the cooling effect of big volcanic eruptions.

A paper published today in Geophysical Research Letters may put the solar-trigger hypothesis at rest. Gifford Miller of the University of Colorado in Boulder and his colleagues suggest that the Little Ice Age began abruptly between 1275 and 1300 AD following four large sulfur-rich explosive eruptions, most likely in the tropics, over a mere 50-year period.

Sulfate particles hurled high up into the atmosphere by the massive eruptions would have reduced the amount of sunlight reaching the ground and caused a series of cold summers. The found that ice-growth records from Baffin Island and Iceland indicate that glaciers and Arctic sea ice did advance abruptly at the time.  The resulting climate feedbacks seem to have maintained cold conditions for centuries.

“What is new in this study is that the authors have data on the growth of small icecaps in Canada and Iceland, showing a rapid increase in ice volume at the end of the thirteenth and close to the middle of the fifteenth century,” says Georg Feulner, a climate scientist at the Potsdam Institute of Climate Impact Research in Germany.

“These periods coincide with phases of strong volcanic eruptions, but a mechanism is required to produce cooling on longer timescales as the temperature drop after volcanic eruptions typically last only for a few years. In climate model simulations, the authors find that the persistent cooling observed in the climate records can be explained by expanded sea ice resulting in cooling by the ice-albedo feedback mechanism, and cooling in large parts of the North Atlantic by sea-ice export from the Arctic.”

Over at the New York Times DotEarth blog, Jennifer Francis, a climate and sea-ice researcher at Rutgers University in New Jersey, comments on the importance of the findings:

During the past several decades we have seen the enhanced warming of the Arctic owing to a variety of feedbacks involving snow, sea ice, and water vapor, but Arctic Amplification also works in the reverse direction, as in the case of the little ice age.

If a similar series of strong volcanic eruptions were to happen in the next few decades, we would likely experience global cooling with an amplified response at high latitudes. As long as greenhouse gases continue to accumulate in the atmosphere, however, the cooling can only be temporary.

Reposted fromSigalontech Sigalontech

January 18 2012

The Man of Numbers: How Fibonacci Changed the World | brainpickings.org

What Medieval mathematics have to do with remix culture, publishing entrepreneurship, and gamification.

 

----------------------------

 // oAnth

 "The change in society brought about by the teaching of modern arithmetic was so pervasive and all-powerful that within a few generations people simply took it for granted. There was no longer any recognition of the magnitude of the revolution that took the subject from an obscure object of scholarly interest to an everyday mental tool. Compared with Copernicus’s conclusions about the position of Earth in the solar system and Galileo’s discovery of the pendulum as a basis for telling time, Leonardo’s showing people how to multiply 193 by 27 simply lacks drama.” ~ Keith Devlin

Original URL -


June 11 2011

02mydafsoup-01
Conserving a medieval manuscript | State Library of Victoria - Australia

When the Library decided to restore a 15th-century book, the process was documented. Follow the conservation treatment undertaken on the 15th-century English manuscript

"Pilgrimage of the life of man, and pilgrimage of the soul"

for the exhibition The medieval imagination.

Read the transcript

Textual description – Pilgrim's progress Video

This Pilgrim's progress video is presented on a black background with floral detail reflecting a medieval illustrative motif around the edges of the screen. Images and captions describe the conservation process of one of the Library's medieval manuscripts.

Frame 1

The Library’s conservation section undertook major conservation treatment of the 15th-century English manuscript Pilgrimage of the life of man, and Pilgrimage of the soul for the exhibition The medieval imagination.

Frame 2

Extensive damage to the vellum leaves and brittle glue on the folds of the spine made it very difficult to handle and display without causing further damage to this precious item, so after much research and discussion it was decided to treat and rebind the manuscript.

Frame 3

Image of manuscript being disbound from damaged 17th-century binding. The disbound sections showed a thick layer of animal glue on vellum folds.

Frame 4

The vellum leaves on left have been cleaned and repaired.

Frame 5

Extensive research into the repair method of the vellum leaves was undertaken by senior conservator Jane Hinwood. A team of five conservators spent weeks repairing the vellum pages in preparation for rebinding.

Frame 6

While it was unbound it was possible to carry out a scientific analysis of the pigments and inks.

Frame 7

Deborah Lau, analytical conservation scientist from the CSIRO, undertook non-destructive x-ray fluorescence analysis and azurite, vermillion and tin-lead yellow were positively identified in the text and illuminations.

Frame 8

Image of equipment used in the analysis.

Frame 9

In-depth research into English medieval binding and discussion with conservation colleagues from the UK fed into the decisions about how to rebind the manuscript.

Frame 10

Book conservator Ian Cox sewed together the repaired sections of the manuscript on a sewing frame.

Frame 11

Image of the completed sewn textblock with endbands.

Frame 12

Then, boards were prepared and attached to the textblock.

Frame 13

Once the boards are attached, the manuscript is ready for covering.

Frame 14

The next step is attaching an alum tawed leather cover. Damp goat skin is tied up with linen thread in a finishing press to form pronounced raised bands.

Frame 15

To finish the covering, the manuscript's alum tawed goat skin, adhered to boards, is trimmed. The textblock is wrapped in wax paper for protection. Archival materials were used in the binding which will protect this precious collection item for the future.

Frame 16

The manuscript was successfully rebound using a non-adhesive binding style and covered with white alum tawed goat skin, sympathetic in appearance with a 15th-century English medieval manuscript.

Frame 17

Image of the re-bound manuscript open on a workbench.

Frame 18

Book conservator Ian Cox holds the completed manuscript at a workbench in the conservation laboratory.

February 24 2010

Older posts are this way If this message doesn't go away, click anywhere on the page to continue loading posts.
Could not load more posts
Maybe Soup is currently being updated? I'll try again automatically in a few seconds...
Just a second, loading more posts...
You've reached the end.

Don't be the product, buy the product!

Schweinderl