l'institut+(de+france)

   The Institut de France (French Institute), also referred to simply as "l'Institut", is a multidisciplinary learned society, including the members of the five French " Académies". It was founded in 1795. Its stated mission is to perfect the arts and the sciences through the meeting of great minds from different fields; and to manage the thousands of donations and legacies that it receives for this purpose.

institut [ɛ̃stity]

• institut de beauté beauty salon or parlor (US)

• institut de sondage polling organization

► Institut national de l'audiovisuel library of radio and television archives

► Institut universitaire de formation des maîtres teacher training college

► Institut universitaire de technologie ≈ polytechnic (Brit), ≈ technical institute (US)

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nom masculin institute

- institut de beauté

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institut nm institute.

institut de beauté beauty salon ou parlour^GB; institut de crédit Fin lending organization; institut d'émission Fin central bank; Institut de France body representing the five French academies; institut médico-légal forensic science laboratory; institut médico-pédagogique special school; institut de sondage polling organization.

[ɛ̃stity] nom masculin

[établissement] institute

Institut (de France) nom propre masculin

L'Institut, as it is commonly known, is a learned society which includes the five Académies (the Académie française being one of them). Its headquarters are in the building of the same name on the banks of the Seine in Paris.

= DIMDI (Deutsches Institut fur Medizinisches Dokumentation und Information).

Nota: Distribuidor de bases de datos.

Ex. Other European host include DIMDI (Deutsches Institut fur Medizinisches Dokumentation und Information), the German Service, and Telesystèmes-Questel based in France.

SUBJECT AREA: Metallurgy

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Soon after graduating from the Ecole des Mines at St-Etienne in 1910, Chevenard joined the Société de Commentry Fourchambault et Decazeville at their steelworks at Imphy, where he remained for the whole of his career. Imphy had for some years specialized in the production of nickel steels. From this venture emerged the first austenitic nickel-chromium steel, containing 6 per cent chromium and 22–4 per cent nickel and produced commercially in 1895. Most of the alloys required by Guillaume in his search for the low-expansion alloy Invar were made at Imphy. At the Imphy Research Laboratory, established in 1911, Chevenard conducted research into the development of specialized nickel-based alloys. His first success followed from an observation that some of the ferro-nickels were free from the low-temperature brittleness exhibited by conventional steels. To satisfy the technical requirements of Georges Claude, the French cryogenic pioneer, Chevenard was then able in 1912 to develop an alloy containing 55–60 per cent nickel, 1–3 per cent manganese and 0.2–0.4 per cent carbon. This was ductile down to −190°C, at which temperature carbon steel was very brittle.

By 1916 Elinvar, a nickel-iron-chromium alloy with an elastic modulus that did not vary appreciably with changes in ambient temperature, had been identified. This found extensive use in horology and instrument manufacture, and even for the production of high-quality tuning forks. Another very popular alloy was Platinite, which had the same coefficient of thermal expansion as platinum and soda glass. It was used in considerable quantities by incandescent-lamp manufacturers for lead-in wires. Other materials developed by Chevenard at this stage to satisfy the requirements of the electrical industry included resistance alloys, base-metal thermocouple combinations, magnetically soft high-permeability alloys, and nickel-aluminium permanent magnet steels of very high coercivity which greatly improved the power and reliability of car magnetos. Thermostatic bimetals of all varieties soon became an important branch of manufacture at Imphy.

During the remainder of his career at Imphy, Chevenard brilliantly elaborated the work on nickel-chromium-tungsten alloys to make stronger pressure vessels for the Haber and other chemical processes. Another famous alloy that he developed, ATV, contained 35 per cent nickel and 11 per cent chromium and was free from the problem of stress-induced cracking in steam that had hitherto inhibited the development of high-power steam turbines. Between 1912 and 1917, Chevenard recognized the harmful effects of traces of carbon on this type of alloy, and in the immediate postwar years he found efficient methods of scavenging the residual carbon by controlled additions of reactive metals. This led to the development of a range of stabilized austenitic stainless steels which were free from the problems of intercrystalline corrosion and weld decay that then caused so much difficulty to the manufacturers of chemical plant.

Chevenard soon concluded that only the nickel-chromium system could provide a satisfactory basis for the subsequent development of high-temperature alloys. The first published reference to the strengthening of such materials by additions of aluminium and/or titanium occurs in his UK patent of 1929. This strengthening approach was adopted in the later wartime development in Britain of the Nimonic series of alloys, all of which depended for their high-temperature strength upon the precipitated compound Ni3Al.

In 1936 he was studying the effect of what is now known as "thermal fatigue", which contributes to the eventual failure of both gas and steam turbines. He then published details of equipment for assessing the susceptibility of nickel-chromium alloys to this type of breakdown by a process of repeated quenching. Around this time he began to make systematic use of the thermo-gravimetrie balance for high-temperature oxidation studies.

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SUBJECT AREA: Architecture and building, Civil engineering

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Auguste Perret belonged to the family contracting firm of A. \& G.Perret, which early specialized in the use of reinforced concrete. His eight-storey building at 25 bis Rue Franklin in Paris, built in 1902–3, was the first example of frame construction in this material and established its viability for structural design. Both ground plan and façade are uncompromisingly modern, the simplicity of the latter being relieved by unobtrusive faience decoration. The two upper floors, which are set back, and the open terrace roof garden set a pattern for future schemes. All of Perret's buildings had reinforced-concrete structures and this was clearly delineated on the façade designs. The concept was uncommon in Europe at the time, when eclecticism still largely ruled, but was derived from the late nineteenth-century skyscraper façades built by Louis Sullivan in America. In 1905–6 came Perret's Garage Ponthieu in Paris; a striking example of exposed concrete, it had a central façade window glazed in modern design in rich colours. By the 1920s ferroconcrete was in more common use, but Perret still led the field in France with his imaginative, bold use of the material. His most original structure is the Church of Notre Dame at Le Raincy on the outskirts of Paris (1922–3). The imposing exterior with its tall tower in diminishing stages is finely designed, but the interior has magnificence. It is a wide, light church, the segmented vaulted roof supported on slender columns. The whole structure is in concrete apart from the glass window panels, which extend the full height of the walls all around the church. They provide a symphony of colour culminating in deep blue behind the altar. Because of the slenderness of the columns and the richness of the glass, this church possesses a spiritual atmosphere and unimpeded sight and sound of and from the altar for everyone. It became the prototype for churches all over Europe for decades, from Moser in prewar Switzerland to Spence's postwar Coventry Cathedral.

In a long working life Perret designed buildings for a wide range of purposes, adhering to his preference for ferroconcrete and adapting its use according to each building's needs. In the 1940s he was responsible for the railway station at Amiens, the Atomic Centre at Saclay and, one of his last important works, the redevelopment after wartime damage of the town centre of Le Havre. For the latter, he laid out large open squares enclosed by prefabricated units, which display a certain monotony, despite the imposing town hall and Church of St Joseph in the Place de L'Hôtel de Ville.

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Grammatical information: f.

Meaning: `Sirene(s)', mythical destructive bird-like creatures (woman-birds), who, in the Od., attract those navigating by with their beautiful chant and kill them (Od.; Nilsson Gr. Rel. I² 228f.), also as des. of various seductive women and creatures (Alcm., E., Aeschin. a.o.); as des. of a wild kind of bees (Arist. a.o.; Gil Fernández Nombres de insectos 214f.).

Other forms: (Att. vase-inscr. Σιρ-; s. Kretschmer Glotta 10, 61 f. w. lit.), often pl. - ῆνες, gen. du. - ήνοιιν (Od.). Byforms Σειρην-ίδες (Dor. Σηρην-) pl. (Alcm. a.o.), - άων gen. pl. (Epich. 123, verse-end).

Dialectal forms: As 1. member in Myc. se-re-mo-ka-ra-o-re, - a-pi (Mühlestein Glotta 36,152ff.)??; wellfounded doubts by Risch Studi Micenei (Roma 1966) 1, 53 ff. Aura Jorro 255.

Derivatives: Σειρήν(ε)ιος `sirene-like' (LXX, Hld.).

Origin: PG [a word of Pre-Greek origin]X [probably]

Etymology: As the orig. (appellative) meaning is unknown, only hypotheses are possible. Purely formal (cf. Schwyzer 487) one should connect either σειρά ("the one who grasps, who snares") or Σείριος (as personification of the midday-blaze and the midday-magic), s. Solmsen Wortforsch. 126ff. (w. older lit.; to this Güntert Kalypso 174 f.), where the last idea is preferred. Acc. to others (Brandenstein Kratylos 6, 169 with Tomaschek, Lagercrantz Eranos 17, 101 ff. with diff. interpretations) Thrac.-Phryg. For Pre-Greek-Mediterr. origin e.g. Chantraine Form. 167 (with Cohen); further hypotheses in Brandenstein Festschr. Jul. Fr. Schütz (Graz-Köln 1954) 56 f. -- On the development of the word sirène in French Chantraine Institut de France (Lecture) 1954: 19, 5 f. -- Furnée 172 takes the wild bees for Pre-Greek.

Page in Frisk: 2,687-688

    Institut Géographique Nationale

   national public service agency responsible for the official cartography of France, and the publication of geographic information. The IGN publishes popular series of maps of France, including road maps and specialist maps. The IGN also runs theGéoportail website, offering satellite imagery of France similar to that provided by Google Earth.

    Institut d'Etudes Politiques

   popularly referred to as Sciences Po, IEP are selective-entry schools of politics and economics, within the French university system. There are currently nine IEP, the most prestigious of them being the IEP de Paris. IEP provide a rounded multidisciplinary higher education and training for future leaders of the private sector and the civil service. They also prepare students for the gruelling competitive entry exams for the ENA, France's top school of administration, and other graduate schools. Students follow courses in politics and economics, but also languages, sociology, history and geography; this multidisciplinary approach, while going against the grain of many traditional concepts of higher education, is popular in France, and is much appreciated by students and employers. Graduates obtain a first degree or a masters degree, depending on the point of exit. The Paris IEP was founded in 1872, the others after the Second World War. See Higher Education.

SUBJECT AREA: Medical technology, Photography, film and optics

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At the age of 19 Marey went to Paris to study medicine, becoming particularly interested in the problems of the circulation of the blood. In an early communication to the Académie des Sciences he described a much improved device for recording the pulse, the sphygmograph, in which the beats were recorded on a smoked plate. Most of his subsequent work was concerned with methods of recording movement: to study the movement of the horse, he used pneumatic sensors on each hoof to record traces on a smoked drum; this device became known as the Marey recording tambour. His attempts to study the wing movements of a bird in flight in the same way met with limited success since the recording system interfered with free movement. Reading in 1878 of Muybridge's work in America using sequence photography to study animal movement, Marey considered the use of photography himself. In 1882 he developed an idea first used by the astronomer Janssen: a camera in which a series of exposures could be made on a circular photographic plate. Marey's "photographic gun" was rifle shaped and could expose twelve pictures in approximately one second on a circular plate. With this device he was able to study wing movements of birds in free flight. The camera was limited in that it could record only a small number of images, and in the summer of 1882 he developed a new camera, when the French government gave him a grant to set up a physiological research station on land provided by the Parisian authorities near the Porte d'Auteuil. The new design used a fixed plate, on which a series of images were recorded through a rotating shutter. Looking rather like the results provided by a modern stroboscope flash device, the images were partially superimposed if the subject was slow moving, or separated if it was fast. His human subjects were dressed all in white and moved against a black background. An alternative was to dress the subject in black, with highly reflective strips and points along limbs and at joints, to produce a graphic record of the relationships of the parts of the body during action. A one-second-sweep timing clock was included in the scene to enable the precise interval between exposures to be assessed. The fixed-plate cameras were used with considerable success, but the number of individual records on each plate was still limited. With the appearance of Eastman's Kodak roll-film camera in France in September 1888, Marey designed a new camera to use the long rolls of paper film. He described the new apparatus to the Académie des Sciences on 8 October 1888, and three weeks later showed a band of images taken with it at the rate of 20 per second. This camera and its subsequent improvements were the first true cinematographic cameras. The arrival of Eastman's celluloid film late in 1889 made Marey's camera even more practical, and for over a decade the Physiological Research Station made hundreds of sequence studies of animals and humans in motion, at rates of up to 100 pictures per second. Marey pioneered the scientific study of movement using film cameras, introducing techniques of time-lapse, frame-by-frame and slow-motion analysis, macro-and micro-cinematography, superimposed timing clocks, studies of airflow using smoke streams, and other methods still in use in the 1990s. Appointed Professor of Natural History at the Collège de France in 1870, he headed the Institut Marey founded in 1898 to continue these studies. After Marey's death in 1904, the research continued under the direction of his associate Lucien Bull, who developed many new techniques, notably ultra-high-speed cinematography.

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See also: Demenÿ, Georges

BC / MG

Institut géographique national French national geographical institute

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IGN nm (abbr = Institut géographique national) organization responsible for producing maps of France; une carte de l'IGN ≈ an OS map.

(abréviation de Institut géographique national) nom propre masculin

Created in 1940, this state agency is responsible for the official map of France. It keeps a geographical database and publishes large scale maps. It is organized into regional offices and sponsors a school which trains 200 students a year.

= Telesystèmes-Questel.

Nota: Distribuidor de bases de datos.

Ex. Other European host include DIMDI (Deutsches Institut fur Medizinisches Dokumentation und Information), the German Service, and Telesystèmes-Questel based in France.

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= Telesystèmes-Questel.

Nota: Distribuidor de bases de datos.

= based in

Ex. Other European host include DIMDI (Deutsches Institut fur Medizinisches Dokumentation und Information), the German Service, and Telesystèmes-Questel based in France.

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= headquartered (at/in), based in

Ex. The author discusses some challenges that the library, headquartered in San Jose, California, has had to face during Fuller's directorship.

Ex. Other European host include DIMDI (Deutsches Institut fur Medizinisches Dokumentation und Information), the German Service, and Telesystèmes-Questel based in France.

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DIMDI (Deutsches Institut fur Medizinisches Dokumentation und Information)

= DIMDI (Deutsches Institut fur Medizinisches Dokumentation und Information).

Nota: Distribuidor de bases de datos.