hartree douglas (18 Ergebnisse)

Hardcover. Zustand: Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less 1.12.

Hardcover. Zustand: Good. xiv 287p navy hardback, somewhat scuffed and faded boards, spine with old library marks, from a Cambridge college library, text clean with odd light pencil marks, binding still tight, hinges a bit rubbed Language: English.

Hardcover. Zustand: Good. xiv 287p original cloth worn with age and use, with the chapter on Organisation of Calculations for an Automatic Machine, from a Cambridge college library with signs of wear Language: English.

Hardcover. Zustand: Very good. Cloth/no dust jacket Octavo. dark blue cloth, copper lettering, 181 pp, cover lightly soiled Standard shipping (no tracking or insurance) / Priority (with tracking) / Custom quote for large or heavy orders.

Paperback. Zustand: Brand New. reissue edition. 138 pages. 9.50x6.75x0.50 inches. In Stock.

Zustand: Akzeptabel. Formateinband: Leinen / gebundene Ausgabe XVI, 302 S. (24,5 cm) Reprint of the 2nd edition; Exemplar aus Institutsbibliothek mit Standortschild am Rücken, Stempel u. kl. Barcodeklebern, mit Klarsichtfolie überzogen; sonst in gutem Zustand. Sprache: Englisch Gewicht in Gramm: 950 [Stichwörter: Numerische Analysis].

Paperback. Zustand: Brand New. 154 pages. 8.98x5.98x0.71 inches. In Stock.

Hardcover. Zustand: Very Good. xiv 287p cloth, dustjacket (small tear), with an important chapter on Organisation of Calculations for an Automatic Machine, this copy was formerly owned by Prof Cassells of Cambridge Language: English.

(29,5 x 21 cm). 12 S. Mit 8 Abbildungen. Original-Broschur. (Sonderdruck aus: Zeitschr. für angew. Mathematik und Mechanik). Erste Ausgabe eines Vortrags für die Jahrestagung der Gesellschaft für angewandte Mathematik und Mechanik in Darmstadt. - Es werden u.a. die Rechner Mark I, Eniac und EDSAC beschrieben. - Wohlerhalten. - DSB 6, 147.

Hardcover. First Edition, First Printing. Octavo; VG/VG; navy spine with white text; jacket has age toning, edgewear, rubbing, marker on front; boards are strong and clean; textblock has age toning, slight edgewear, name written on front endpaper, otherwise clean; pp 181. SHELVED IN ANNEX C ON THE RIGHT HAND SIDE. 1295150. Full-priced Rockville.

IX, 138 pp. with a lot of illusrations, Sprache: Englisch Gewicht in Gramm: 510 Groß 8°, Original-Leinen (Hardcover), Bibliotheks-Exemplar (ordnungsgemäß entwidmet), Stempel auf Titel, insgesamt gutes und innen sauberes Exemplar, (library copy in good condition),

254 x 181 mm. Tall 8vo. Pages 550-558. [Entire volume: viii, 645, [2] pp.] 4 tables. Quarter navy morocco, morocco corners, raised bands, gilt spine; spine lightly faded. Blind stamp of the Carnegie Institution of Washington, Mount Wilson Observatory. Fine. "Hartree and his collaborators evaluated wave functions for more than twenty-five different atomic species in various states of ionization. Through his stimulus and encouragement many more atoms were investigated by physicists throughout the world. Hartree's equations as generalized by V. Fock proved to be extremely valuable in theoretical calculations in sold state physics." DSB, VI, p. 147.

8vo. xiv, 287 pp. 31 figs., bibliog., index. Navy cloth, gilt spine, dust-jacket. Ownership rubber stamps of Robert L. White. Fine. FIRST EDITION. "Calculation originally, and over a long period, meant numerical calculation â" the repertoire of arithmetical operations such as addition, subtraction, multiplication and division, and procedures such as extraction of square roots, which could be applied to arbitrary numbers: integers, fractions, and rational, irrational and transcendental numbers. Subsequent developments of such procedures into powerful methods for the solution of general mathematical problems in numerical terms came to known, in English, as numerical analysis." Ifrah, The universal history of computing, p. 69. DSB, VI, p. 148.

First edition, first printing; tall 4to; diagrams and monochrome illustrations from photographs throughout the text, inked out ownership inscription on the front free endpaper, endpapers toned; original red-orange cloth, titles to spine in black, cloth lightly rubbed at the extremities, a very good copy in the rubbed, chipped, and creased jacket; 138pp. First edition, first printing of the lectures that were 'the first comprehensive exposition of electronic digital computing'. Uncommon in the dust jacket. In addition to his significant contributions to ballistics and quantum theory, British mathematician Douglas Hartree (1897-1958) was a leader in efforts to automate scientific calculations. He was 'involved in the development of the digital electronic computer, which emerged from wartime attempts to automate calculation further. In 1946 Hartree's advice was sought in the application of the United States army's ENIAC (electronic numerical integrator and computer) to the production of ballistic tables' (Oxford Dictionary of National Biography). The present volume is 'based upon a series of lectures delivered at the University of Illinois in 1948. These lectures were intended for a well-informed scientific audience outside the tiny group of professionals then involved with electronic computing. They represented the first comprehensive exposition of electronic digital computing, and this book was one of the first two treatises on the subject. The other book, Edmund Berkley's Giant Brains or Machines That Think was written for a more popular audience and achieved greater sales. Reflecting Hartree's English background, this book contained more information on the English machines than did Berkley's. Foremost among the digital machines discussed in Hartree's work are the Harvard Mark I and ENIAC. Chapter 8, entitled "Projects and Prospects", contains the first generally available comprehensive account of the stored-program machines then in development, including EDVAC, ACE, and EDSAC' (Hook & Norman, Origins of Cyberspace 652). Hook & Norman, Origins of Cyberspace 652.

Hardcover. Zustand: Fine in Near Fine DJ. First Edition. First Edition. Hardcover. "The first comprehensive exposition of electronic digital computing." [OOC 652] "These lectures were intended for a well-informed scientific audience outside the tiny group of professionals then involved with electronic computing. They represented the first comprehensive exposition of electronic digital computing, and this book was one of the first two treatises on the subject. The other book, Edmund Berkeley's Giant Brains or Machines That Think was written for a more popular audience and achieved greater sales. . . . Chapter 8, entitled 'Projects and prospects,' contains the first generally available comprehensive account of the stored-program machines then in development, including EDVAC, ACE, and EDSAC." [OOC 652]. Minimal shelf/edge wear, else tight, bright, and unmarred; DJ shows minor shelf/edge wear, one small closed tear, else bright and clean. Orange cloth boards, black ink lettering. 8vo. 138pp. Illus. (b/w plates).

Large 8vo, pp. lii, 956. Black buckram, spine lettered in gilt, library bookplate. The whole volume is offered, of which Hartree?s paper occupies pp. 500?506, with 3 photographic illustrations. FIRST EDITION. ?The first paper on an electronic digital computer published in a large-circulation international scientific journal.? Hartree, a British mathematician, first learned of ENIAC in 1945, and the following year became the first Englishman to work with the machine. ?He was the first to bring news of ENIAC to Great Britain, publishing the above article in Nature shortly after his return from the United States.? Hook & Norman, Origins of cyberspace, 648.

London, Macmillan & Co., 1946. 8vo. Without wrappers. Extracted from "Nature. No. 4015, Saturday, October 12, 1946, Vol. 158". A fine and clean copy. [Hartree:] Pp. 500-6. [Entire offered issue: Pp. 495-528]. First printing of this "first paper on an electronic digital computer published in a large-circulation international scientific journal." (OOC).The ENIAC was the first general-purpose electronic computer. It was a Turing-complete [computationally universal] digital computer capable of being reprogrammed to solve a full range of computing problems."Hartree, a British mathematician, first learned of ENIAC [Electronic Numerical Integrator And Computer] in 1945, when he saw the as-yet uncompleted machine during a visit to the Moore School. In 1946 he returned to the Moore School as a participant in the Moore School lectures, advising on nonmilitary uses of ENIAC" during this time he became the first Englishman to work with the machine. He was the first to bring news of ENIAC to Great Britain, publishing the above article in Nature shourtly after his return from the United States. Although he himself invented no new calculating devices, Hartree's promotion of electronic digital calculating methods in scientific computation helped to stimulate the development of more powerful computers like Cambridge University's EDSAC." (OOC).The ENIAC was compared to today's standard rather large: It was 100 feet long, 10 feet high, and 3 deep and contained 18,000 vacuum tubes, about 70,000 resistors, 10,000 capacitors, and 6,000 switches. It consumed 140 kilowatts of power, so much power that, when operated, the lights in a nearby town dimmed.See: Hook & Norman. Origins of Cyberspace 648.

Hartree, Douglas R. (1897-1958). The ENIAC, an electronic computing machine. In Nature 158 (October 1946): 500-506. 8vo extract of 495-528pp. Text illustrations. 250 x 170 mm. Disbound. Corner torn from last leaf of number, affecting text, spine splitting. Very good copy. First Edition. The first paper on an electronic digital computer published in a large-circulation international scientific journal. The ENIAC, developed during World War II by Pres Eckert and John Mauchly at the University of Pennsylvania's Moore School of Engineering, was the world's first large-scale general purpose digital computer. Hartree, a British mathematician, first learned of ENIAC in 1945, when he saw the as-yet uncompleted machine during a visit to the Moore School. In 1946 he returned to the Moore School as a participant in the Moore School lectures, advising on nonmilitary uses of ENIAC; during this time he became the first Englishman to work with the machine. He was the first to bring news of ENIAC to Great Britain, publishing the above article in Nature shortly after his return from the United States. Although he himself invented no new calculating devices, Hartree's promotion of electronic digital calculating methods in scientific computation helped to stimulate the development of more powerful computers like Cambridge University's EDSAC. Origins of Cyberspace 648. Randell 1982a, 473. .