L d davisson (27 risultati)

- Brossura
Da: GreatBookPrices, Columbia, MD, U.S.A.GreatBookPrices
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Come nuovo
EUR 36,25
EUR 2,30 spedizioneSpedito in U.S.A.Quantità: Più di 20 disponibili
Condizione: As New. Unread book in perfect condition. Arnold, William D I (illustratore).

- Rilegato
Da: GreatBookPrices, Columbia, MD, U.S.A.GreatBookPrices
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 50,16
EUR 2,30 spedizioneSpedito in U.S.A.Quantità: Più di 20 disponibili
Condizione: New. Arnold, William D I (illustratore).

- Rilegato
Da: GreatBookPrices, Columbia, MD, U.S.A.GreatBookPrices
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Come nuovo
EUR 50,16
EUR 2,30 spedizioneSpedito in U.S.A.Quantità: Più di 20 disponibili
Condizione: As New. Unread book in perfect condition. Arnold, William D I (illustratore).

Lingua: Inglese
Editore: Springer, 1992
Serie: CISM International Centre for Mechanical Sciences, Libro 179 di 433. Libro 179 di 433 - CISM International Centre for Mechanical Sciences
- Brossura
Da: California Books, Miami, FL, U.S.A.California Books
Contatta il venditoreVenditore con 4 stelleCondizione: Nuovo
EUR 61,06
Spedizione gratuitaSpedito in U.S.A.Quantità: Più di 20 disponibili
Condizione: New.

- Brossura
Da: GreatBookPricesUK, Woodford Green, Regno UnitoGreatBookPricesUK
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Come nuovo
EUR 43,77
EUR 17,71 spedizioneSpedito da Regno Unito a U.S.A.Quantità: Più di 20 disponibili
Condizione: As New. Unread book in perfect condition. Arnold, William D I (illustratore).

Lingua: Inglese
Editore: Springer Verlag - Wien - New York, UDINE, 1991
Serie: CISM International Centre for Mechanical Sciences, Libro 179 di 433. Libro 179 di 433 - CISM International Centre for Mechanical Sciences
- Brossura
Da: Biblioteca di Babele, Tarquinia, VT, ItaliaBiblioteca di Babele
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Ottimo
EUR 28,80
EUR 42,00 spedizioneSpedito da Italia a U.S.A.Quantità: 1 disponibili
Condizione: OTTIMO USATO. International Centre for Mechanical Science - Courses and lectures INGLESE Ottimo stato, coperta in cartoncino patinato semimorbido, pochi segni d'uso, cerniera stretta, tagli e pagine in ottimo stato, etichetta adesiva con prezzo su controguardia. 14 illustrazioni in nero. Le spese di stampa di questo…volume sono in parte coperte da contributi del Consiglio Nazionale delle Ricerche. CCCXXIV volume della collana International Centre for Mechanical Science - Courses and lectures. Numero pagine 203.

- Rilegato
Da: GreatBookPricesUK, Woodford Green, Regno UnitoGreatBookPricesUK
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 58,14
EUR 17,71 spedizioneSpedito da Regno Unito a U.S.A.Quantità: Più di 20 disponibili
Condizione: New. Arnold, William D I (illustratore).

- Rilegato
Da: GreatBookPricesUK, Woodford Green, Regno UnitoGreatBookPricesUK
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Come nuovo
EUR 58,14
EUR 17,71 spedizioneSpedito da Regno Unito a U.S.A.Quantità: Più di 20 disponibili
Condizione: As New. Unread book in perfect condition. Arnold, William D I (illustratore).
Altre immaginiGreat American Mystery Stories of the Twentieth Century [VINTAGE 1989] [FIRST EDITION]
Armstrong, Charlotte; Buck, Pearl S.; Burnett, W.R.; Carr, John Dickson; Charteris, Leslie; Davis Dorothy Salisbury; deFord, Miriam Allen; Eberhart, Mignon G.; Ellin, Stanley; Faulkner, William; Fish, Robert L.; Henry, O.; Kyd, Thomas; MacDonald, John D.; Macdonald, Ross; McBain, Ed; Millar, Margaret; Patrick, Q.; Post, Melville Davisson; Steele, Wilbur Daniel; Stribling, T.S.; Theroux, Paul; Train, Arthur
Lingua: Inglese
Editore: The Franklin Library, Franklin Center, Pennsylvania, 1989
- Rilegato
- Prima edizione
Da: Vero Beach Books, Vero Beach, FL, U.S.A.Vero Beach Books
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Ottimo
EUR 76,33
Spedizione gratuitaSpedito in U.S.A.Quantità: 1 disponibili
Hardcover. Condizione: Fine. 1st Edition. Fine unread condition faux navy blue leather boards with a color illustrated front cover paste-down, with gold front cover and spine lettering. Includes Preliminary Page Note by The Editors; Acknowledgments; and About the Authors. The volume also features gilt page edges on all three sid…es, a traditional 3-hubbed spine, and acid-free paper for permanence and durability. Illustrated with a double-page color frontispiece painting and color illustrated front and rear endpapers. "Great American Mystery Stories of the Twentieth Century presents an impressive array of writers. These literary sleuths - American writers who hail from all over the United States and even abroad - offer stories that reflect the varied experiences of a vast and culturally diverse country. The authors in this collection have garnered innumerable honors, from myriad awards conferred by their own mystery-writing colleagues to the Nobel Prize in Literature; they all share the writer's greatest reward, however, the broad readership and popular acclaim that can only come from creating superb, entertaining tales. Some of these mystery masters have left an indelible mark on the reading public by creating characters that have entered the national consciousness. The Saint, Lew Archer, Travis McGee, Uncle Abner - these names are real to mystery aficionados who know them well and have learned much about life from them. Other writers have given birth to characters who live only in one brief tale, making readers regret that they won't meet them again. Although the modern American mystery story has only recently gained respectability as the subject of academic study, the genre is an integral part of this country's literature. In fact, it stands at the very center of a markedly American literary offering, the short story. Edgar Allan Poe, the creator of the short story form, based the world's first mystery tale on the crime story, a style of fiction that originally appeared in the beginning of the nineteenth century. He enhanced the elements in these negligible stories with such genius that he lifted his own tales to the level of art. Poe's "The Murder in the Rue Morgue," first published in 1841, has been called by one critic "the single most important story in the history of the genre." Subsequent literary detectives may have occasionally felt daunted by following the mystery story's inimitable forefather; still, they have made their own distinctive contributions to this uniquely American literary form. Among them, the twenty-three writers in this anthology of American mystery masterpieces have written hundreds of memorable stories. Choosing the writers - not to mention the stories - from a national treasure of literary excellence was indeed difficult. The sheer number of outstanding American mystery stories offers endless hours of reading pleasure. To this day, superlative writers apply their varied skills to the genre first explored by Edgar Allan Poe. Readers new to this literary terrain will enjoy finding their way to some of mystery's hidden corners - as well as its landmarks. - The Editors" - from the Preliminary Page. Ward, John (panel art and color frontispiece) (illustratore).

Lingua: Inglese
Editore: Springer, 1992
Serie: CISM International Centre for Mechanical Sciences, Libro 179 di 433. Libro 179 di 433 - CISM International Centre for Mechanical Sciences
- Brossura
Da: Ria Christie Collections, Uxbridge, Regno UnitoRia Christie Collections
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 68,77
EUR 14,14 spedizioneSpedito da Regno Unito a U.S.A.Quantità: Più di 20 disponibili
Condizione: New. In.

Lingua: Inglese
Editore: Springer 1992-03-12, 1992
Serie: CISM International Centre for Mechanical Sciences, Libro 179 di 433. Libro 179 di 433 - CISM International Centre for Mechanical Sciences
- Brossura
Da: Chiron Media, Wallingford, Regno UnitoChiron Media
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 65,02
EUR 18,29 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 10 disponibili
Paperback. Condizione: New.

- Brossura
Da: GreatBookPricesUK, Woodford Green, Regno UnitoGreatBookPricesUK
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 67,45
EUR 17,71 spedizioneSpedito da Regno Unito a U.S.A.Quantità: Più di 20 disponibili
Condizione: New. Arnold, William D I (illustratore).

Lingua: Inglese
Editore: Springer, 1992
Serie: CISM International Centre for Mechanical Sciences, Libro 179 di 433. Libro 179 di 433 - CISM International Centre for Mechanical Sciences
- Brossura
Da: Revaluation Books, Exeter, Regno UnitoRevaluation Books
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 79,49
EUR 11,80 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 2 disponibili
Paperback. Condizione: Brand New. 1991 edition. 212 pages. 9.61x6.69x0.48 inches. In Stock.

- Brossura
Da: GreatBookPrices, Columbia, MD, U.S.A.GreatBookPrices
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 113,92
EUR 2,30 spedizioneSpedito in U.S.A.Quantità: Più di 20 disponibili
Condizione: New. Arnold, William D I (illustratore).

Lingua: Inglese
Editore: Springer Vienna, Springer Vienna, 1992
Serie: CISM International Centre for Mechanical Sciences, Libro 179 di 433. Libro 179 di 433 - CISM International Centre for Mechanical Sciences
- Brossura
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 53,49
EUR 61,88 spedizioneSpedito da Germania a U.S.A.Quantità: 1 disponibili
Taschenbuch. Condizione: Neu. Druck auf Anfrage Neuware - Printed after ordering - The four chapters of this volume, written by prominent workers in the field of adaptive processing and linear prediction, address a variety of problems, ranging from adaptive source coding to autoregressive spectral estimation. The first chapter,…by T.C. Butash and L.D. Davisson, formulates the performance of an adaptive linear predictor in a series of theorems, with and without the Gaussian assumption, under the hypothesis that its coefficients are derived from either the (single) observation sequence to be predicted (dependent case) or a second, statistically independent realisation (independent case). The contribution by H.V. Poor reviews three recently developed general methodologies for designing signal predictors under nonclassical operating conditions, namely the robust predictor, the high-speed Levinson modeling, and the approximate conditional mean nonlinear predictor. W. Wax presents the key concepts and techniques for detecting, localizing and beamforming multiple narrowband sources by passive sensor arrays. Special coding algorithms and techniques based on the use of linear prediction now permit high-quality voice reproduction at remorably low bit rates. The paper by A. Gersho reviews some of the main ideas underlying the algorithms of major interest today.

Lingua: Inglese
Editore: Springer, 1992
Serie: CISM International Centre for Mechanical Sciences, Libro 179 di 433. Libro 179 di 433 - CISM International Centre for Mechanical Sciences
- Brossura
Da: preigu, Osnabrück, Germaniapreigu
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 50,40
EUR 70,00 spedizioneSpedito da Germania a U.S.A.Quantità: 5 disponibili
Taschenbuch. Condizione: Neu. Adaptive Signal Processing | L. D. Davisson (u. a.) | Taschenbuch | CISM International Centre for Mechanical Sciences | v | Englisch | 1992 | Springer | EAN 9783211823330 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[…dot]com | Anbieter: preigu.

Lingua: Inglese
Editore: Springer, 2000
Serie: CISM International Centre for Mechanical Sciences, Libro 179 di 433. Libro 179 di 433 - CISM International Centre for Mechanical Sciences
- Brossura
Da: Mispah books, Redhill, SURRE, Regno UnitoMispah books
Contatta il venditoreVenditore con 4 stelleCondizione: Usato - Come nuovo
EUR 113,08
EUR 29,51 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 1 disponibili
Paperback. Condizione: Like New. LIKE NEW. SHIPS FROM MULTIPLE LOCATIONS. book.

Womb of Her Own : Women's Struggle for Sexual and Reproductive Autonomy
Toronto, Ellen L. K. (EDT); Ponder, Joann (EDT); Davisson, Kristin (EDT); Kelly, Maurine Kelber (EDT)
- Rilegato
Da: GreatBookPrices, Columbia, MD, U.S.A.GreatBookPrices
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Come nuovo
EUR 233,99
EUR 2,30 spedizioneSpedito in U.S.A.Quantità: Più di 20 disponibili
Condizione: As New. Unread book in perfect condition.

Womb of Her Own : Women's Struggle for Sexual and Reproductive Autonomy
Toronto, Ellen L. K. (EDT); Ponder, Joann (EDT); Davisson, Kristin (EDT); Kelly, Maurine Kelber (EDT)
- Rilegato
Da: GreatBookPricesUK, Woodford Green, Regno UnitoGreatBookPricesUK
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Come nuovo
EUR 237,25
EUR 17,71 spedizioneSpedito da Regno Unito a U.S.A.Quantità: Più di 20 disponibili
Condizione: As New. Unread book in perfect condition.

Womb of Her Own : Women's Struggle for Sexual and Reproductive Autonomy
Toronto, Ellen L. K. (EDT); Ponder, Joann (EDT); Davisson, Kristin (EDT); Kelly, Maurine Kelber (EDT)
- Rilegato
Da: GreatBookPricesUK, Woodford Green, Regno UnitoGreatBookPricesUK
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 240,35
EUR 17,71 spedizioneSpedito da Regno Unito a U.S.A.Quantità: Più di 20 disponibili
Condizione: New.

Womb of Her Own : Women's Struggle for Sexual and Reproductive Autonomy
Toronto, Ellen L. K. (EDT); Ponder, Joann (EDT); Davisson, Kristin (EDT); Kelly, Maurine Kelber (EDT)
- Rilegato
Da: GreatBookPrices, Columbia, MD, U.S.A.GreatBookPrices
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 254,80
EUR 2,30 spedizioneSpedito in U.S.A.Quantità: Più di 20 disponibili
Condizione: New.

Lingua: Inglese
Editore: CRC Press 1994-05-19, 1994
Serie: Studies in advanced Mathematics, Libro 22 di 23. Libro 22 di 23 - Studies in advanced Mathematics
- Rilegato
Da: Chiron Media, Wallingford, Regno UnitoChiron Media
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 318,01
EUR 18,29 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 5 disponibili
Hardcover. Condizione: New.

- Rilegato
- Print on Demand
Da: True World of Books, Delhi, IndiaTrue World of Books
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 26,93
Spedizione gratuitaSpedito da India a U.S.A.Quantità: 18 disponibili
LeatherBound. Condizione: New. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. LeatherBound edition. Condition: New. Reprinted from 1767 edition. Leather Binding on Spine and Corners with Golden leaf printing on spine. NO changes have been made to the original text. This is NOT a retyped or an ocr'd repr…int. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. Pages: 157 As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Pages: 157 Language: English.

The Scattering of Electrons by a Single Crystal of Nickel [Davisson & Germer, pp. 558-560] WITH Diffraction of Cathode Rays by a Thin Film [Thomson & Reid, p. 890] WITH The Continuous Spectrum of -Rays [Ellis & Wooster, pp. 563-564] WITH Physical Aspects of Quantum Mechanics [Born, pp. 354-357] WITH Supplement to Nature: The Bicentenary of Newton's Death [Bound in pp. 1-100] in Nature 119, 1927
Davisson, C. J.; Germer, L. H. WITH Thomson, George; Reid, G. WITH Ellis, C. D.; Wooster, W. A. WITH Born, M. [Max]
Editore: Macmillan, London, 1927
- Prima edizione
Da: Atticus Rare Books, West Branch, IA, U.S.A.Atticus Rare Books
Contatta il venditoreVenditore con 5 stelleCondizione: Usato
EUR 898,01
EUR 8,28 spedizioneSpedito in U.S.A.Quantità: 1 disponibili
1st Edition. FIRST EDITIONS OF FOUR VERY IMPORTANT PHYSICS PAPERS, TWO OF WHICH CONFIRMED DE BROGLIE'S HYPOTHESIS ON THE WAVE NATURE OF MATTER. Davisson and Thomson shared the 1937 Nobel Prize in Physics "for the experimental discovery of the diffraction of electrons by crystals" (Nobel Prize Portal). (1) DAVISSON & GERMER'S 192…7 confirmation of de Broglie's hypothesis --the first observation of the wave nature of electrons. de Broglie's wave-particle duality hypothesis and this 1927 confirmation were major steps forward in the experimental confirmation of quantum mechanics. Though Davisson's discovery was somewhat "accidental", it is considered the "definitive confirmation of de Broglie's hypothesis" (L'Annunziata, Radioactivity, 428; Brush, Making 20th Century Science, 224). (2) THOMSON & REID's purposefully set out to prove de Broglie's hypothesis, the wave nature of the electron. Together they designed an instrument to observe diffraction effects, specifically using transmission geometry with high-energy electrons (Davisson and Germer had used reflection diffraction geometry with low-energy electrons. (3) ELLIS & WOOSTER here demonstrate that beta decay does not conserve energy (they did not know of the existence of the neutrino at the time). "By measuring the average energy of disintegration of electrons in the beta decay of radium E", Ellis and Wooster "firmly established that the energy spectrum of electrons emitted in beta decay was continuous" (Hon, Going Amiss in Experimental Research, 227). (4) MAX BORN'S first description in English of his revolutionary new probabilistic interpretation of quantum mechanics. In 1926, Born published, in German, a series of papers entitled "Zur Quantenmechanik der Stoßvorgänge". The papers presented, explained, and developed Born's probability interpretation (also known as the statistical interpretation) for the first time. In this paper, Born explains that work in English for the first time with the additional goal of making "an attempt to understand the physical significance of the quantum theoretical formulae" as a whole (Born, Nature 119, 1927). ALSO INCLUDED: a hundred page "Supplement to Nature: The Bicentenary of Newton's Death" bound in. NOTE THAT WE SEPARATELY OFFER THE 1927 THOMSON & REID PAPER AND THE 1928 THOMSON PAPER ON THE SAME SUBJECT IN ORIGINAL WRAPS. WE ALSO OFFER DE BROGLIE'S SEMINAL PAPER IN BOTH ORIGINAL WRAPS AND BOUND. CONDITION & DETAILS: London: Macmillan. Complete volume. 4to. 10.5 x 8 inches (262 x 200mm). [lix], 948, [100], 4. Ex-libris bearing only minimal markings on the title page and none on the spine. Full, complete volume. Handsomely and professionally rebound in half leather. 5 raised bands at the spine, gilt-ruled. One red morocco label; one black morocco label; both gilt-lettered. Tightly and very solidly bound. Clean and bright throughout. Near fine condition.

Lingua: Inglese
Editore: Springer Vienna Mrz 1992, 1992
Serie: CISM International Centre for Mechanical Sciences, Libro 179 di 433. Libro 179 di 433 - CISM International Centre for Mechanical Sciences
- Brossura
- Print on Demand
Da: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, GermaniaBuchWeltWeit Ludwig Meier e.K.
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 53,49
EUR 23,00 spedizioneSpedito da Germania a U.S.A.Quantità: 2 disponibili
Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The four chapters of this volume, written by prominent workers in the field of adaptive processing and linear prediction, address a variety of problems, ranging from adaptive source coding to autoregressive spectral estimation. The… first chapter, by T.C. Butash and L.D. Davisson, formulates the performance of an adaptive linear predictor in a series of theorems, with and without the Gaussian assumption, under the hypothesis that its coefficients are derived from either the (single) observation sequence to be predicted (dependent case) or a second, statistically independent realisation (independent case). The contribution by H.V. Poor reviews three recently developed general methodologies for designing signal predictors under nonclassical operating conditions, namely the robust predictor, the high-speed Levinson modeling, and the approximate conditional mean nonlinear predictor. W. Wax presents the key concepts and techniques for detecting, localizing and beamforming multiple narrowband sources by passive sensor arrays. Special coding algorithms and techniques based on the use of linear prediction now permit high-quality voice reproduction at remorably low bit rates. The paper by A. Gersho reviews some of the main ideas underlying the algorithms of major interest today. 212 pp. Englisch.

Lingua: Inglese
Editore: Springer Vienna, 1992
Serie: CISM International Centre for Mechanical Sciences, Libro 179 di 433. Libro 179 di 433 - CISM International Centre for Mechanical Sciences
- Brossura
- Print on Demand
Da: moluna, Greven, Germaniamoluna
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 48,37
EUR 48,99 spedizioneSpedito da Germania a U.S.A.Quantità: Più di 20 disponibili
Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. The four chapters of this volume, written by prominent workers in the field of adaptive processing and linear prediction, address a variety of problems, ranging from adaptive source coding to autoregressive spectral…estimation. The first chapter, by T.C. Bu.

Lingua: Inglese
Editore: Springer, Springer Mär 1992, 1992
Serie: CISM International Centre for Mechanical Sciences, Libro 179 di 433. Libro 179 di 433 - CISM International Centre for Mechanical Sciences
- Brossura
- Print on Demand
Da: buchversandmimpf2000, Emtmannsberg, BAYE, Germaniabuchversandmimpf2000
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 53,49
EUR 60,00 spedizioneSpedito da Germania a U.S.A.Quantità: 1 disponibili
Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The four chapters of this volume, written by prominent workers in the field of adaptive processing and linear prediction, address a variety of problems, ranging from adaptive source coding to autoregressive spectral estimation. The fir…st chapter, by T.C. Butash and L.D. Davisson, formulates the performance of an adaptive linear predictor in a series of theorems, with and without the Gaussian assumption, under the hypothesis that its coefficients are derived from either the (single) observation sequence to be predicted (dependent case) or a second, statistically independent realisation (independent case). The contribution by H.V. Poor reviews three recently developed general methodologies for designing signal predictors under nonclassical operating conditions, namely the robust predictor, the high-speed Levinson modeling, and the approximate conditional mean nonlinear predictor. W. Wax presents the key concepts and techniques for detecting, localizing and beamforming multiple narrowband sources by passive sensor arrays. Special coding algorithms and techniques based on the use of linear prediction now permit high-quality voice reproduction at remorably low bit rates. The paper by A. Gersho reviews some of the main ideas underlying the algorithms of major interest today.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 212 pp. Englisch.