World scientific 2000 (31 risultati)
Lingua: Inglese
Editore: World Scientific Publishing Company 4/1/2000, 2000
- Brossura
Da: BargainBookStores, Grand Rapids, MI, U.S.A.BargainBookStores
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 31,24
Spedizione gratuitaSpedito in U.S.A.Quantità: 5 disponibili
Paperback or Softback. Condizione: New. Lectures on Lie Groups (V2). Book.
Lingua: Inglese
Editore: World Scientific Publishing Company 7/26/2000, 2000
- Brossura
Da: BargainBookStores, Grand Rapids, MI, U.S.A.BargainBookStores
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 44,84
Spedizione gratuitaSpedito in U.S.A.Quantità: 5 disponibili
Paperback or Softback. Condizione: New. Applied Quantum Mechanics. Book.
Lingua: Inglese
Editore: World Scientific Publishing Company 8/7/2000, 2000
- Rilegato
Da: BargainBookStores, Grand Rapids, MI, U.S.A.BargainBookStores
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 45,87
Spedizione gratuitaSpedito in U.S.A.Quantità: 5 disponibili
Hardback or Cased Book. Condizione: New. Comparative Statics Analysis in Economics. Book.
Lingua: Inglese
Editore: World Scientific Publishing Company 4/12/2000, 2000
- Brossura
Da: BargainBookStores, Grand Rapids, MI, U.S.A.BargainBookStores
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 47,83
Spedizione gratuitaSpedito in U.S.A.Quantità: 5 disponibili
Paperback or Softback. Condizione: New. Theory of Spinors: An Introduction. Book.
- Rilegato
Da: Antiquariaat Ovidius, Bredevoort, Paesi BassiAntiquariaat Ovidius
Contatta il venditoreVenditore con 5 stelleCondizione: Usato
EUR 28,00
EUR 22,00 spedizioneSpedito da Paesi Bassi a U.S.A.Quantità: 1 disponibili
Condizione: Gebraucht / Used. Hardcover. Very good. Xii,136pp.
Editore: World Scientific 2000, 2000
- Rilegato
Da: Andere Welten Medienvertriebs GmbH, Ahrensburg, SH, GermaniaAndere Welten Medienvertriebs GmbH
Contatta il venditoreVenditore con 2 stelleCondizione: Usato
EUR 19,00
EUR 15,00 spedizioneSpedito da Germania a U.S.A.Quantità: 1 disponibili
Aggiungi al carrelloHardcover Sehr gut erhalten.
Lingua: Inglese
Editore: World Scientific Publishing Company 6/16/2000, 2000
- Brossura
Da: BargainBookStores, Grand Rapids, MI, U.S.A.BargainBookStores
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 56,46
Spedizione gratuitaSpedito in U.S.A.Quantità: 5 disponibili
Paperback or Softback. Condizione: New. Principles of Fusion Energy: An Introduction to Fusion Energy for Students of Science and Engineering. Book.
- Brossura
Da: Chiron Media, Wallingford, Regno UnitoChiron Media
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 38,59
EUR 18,08 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 10 disponibili
PF. Condizione: New.
Lingua: Inglese
Editore: World Scientific Publishing Company 12/17/2000, 2000
- Brossura
Da: BargainBookStores, Grand Rapids, MI, U.S.A.BargainBookStores
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 58,81
Spedizione gratuitaSpedito in U.S.A.Quantità: 5 disponibili
Paperback or Softback. Condizione: New. Computational Finance. Book.
Editore: World Scientific Publishing (2000)., 2000
Da: Antiquariat Dennis R. Plummer, Bingen am Rhein, GermaniaAntiquariat Dennis R. Plummer
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Ottimo
EUR 22,50
EUR 12,00 spedizioneSpedito da Germania a U.S.A.Quantità: 1 disponibili
Aggiungi al carrelloGr.-8°, Original-Leinen. Condizione: Sehr gut. X, 239 SS. Essays published in the Singapore Economic Review and the Accounting And Business Review. - Schönes Exemplar / Very well preserved. Bitte beachten: aufgrund der EU-Verpackungsverordnung können wir leider das EU-Ausland nicht mehr beliefern (einzige Ausnahme: Frankreich, b…ei Bestellungen über Abebooks). Dies geht nur noch, wenn der Kunde eine deutsche Empfängeradresse hat. Einige Firmen bieten Auslandskunden diesen Service via Postfach in Deutschland an. * Von wegen Freihandelszone. Bitte beschweren Sie sich bei Ihrem EU-Abgeordneten oder gleich bei Ihrer Regierung. Sprache: Englisch Gewicht in Gramm: 550.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd 22/12/2000, 2000
- Brossura
Da: Bahamut Media, Reading, Regno UnitoBahamut Media
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Molto buono
EUR 71,71
EUR 8,15 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 1 disponibili
Paperback. Condizione: Very Good. Shipped within 24 hours from our UK warehouse. Clean, undamaged book with no damage to pages and minimal wear to the cover. Spine still tight, in very good condition. Remember if you are not happy, you are covered by our 100% money back guarantee.
Lingua: Inglese
Editore: World Scientific 2000-11, 2000
- Brossura
Da: Chiron Media, Wallingford, Regno UnitoChiron Media
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 61,10
EUR 18,08 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 10 disponibili
PF. Condizione: New.
Lingua: Inglese
Editore: World Scientific Publishing Company, 2000 Buch und Zeitschriften Vlg., 2002
- Brossura
Da: Chiemgauer Internet Antiquariat GbR, Altenmarkt, BAY, GermaniaChiemgauer Internet Antiquariat GbR
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Come nuovo
EUR 55,00
EUR 37,95 spedizioneSpedito da Germania a U.S.A.Quantità: 1 disponibili
Aggiungi al carrelloOriginalbroschur. 24cm. Condizione: Wie neu. THIRD edition. XVII,522 pages. index. In EXCELLENT shape. (We offer a lot of books on PHYSICS and MATHEMATICS on stock in EXCELLENT shape). Aufgrund der von der Europäischen Union erlassenen Handels-Erschwernisse (die neue europäische Verpackungsverordnung mit extremen Gebühren für Hä…ndler) kann in folgende Länder KEIN VERSAND erfolgen: Bulgarien, Dänemark, Estland, Finnland, Griechenland, Irland, Kroatien, Lettland, Litauen, Luxemburg, Malta, Polen, Portugal, Rumänien, Schweden, Slowakei, Slowenien, Ungarn, Zypern. Falls Sie eine Rechnungs- und Lieferadresse in DEUTSCHLAND ermöglichen, kann an diese deutsche Adresse OHNE PROBLEME geliefert werden. Sprache: Englisch Gewicht in Gramm: 1005.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd Jan 2000, 2000
- Brossura
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 63,28
EUR 62,43 spedizioneSpedito da Germania a U.S.A.Quantità: 1 disponibili
Taschenbuch. Condizione: Neu. Neuware - Interest in information technology and the media is growing apace. This book has been specially written to provide an economics framework for analysing the nature and scope, as well as issues, pertaining to the new information and communication technology and revolution. It also presents s…ome trends and perspectives from the Asia-Pacific region. While the economic principles of efficiency and competition are the same everywhere, many socio-political issues with respect to information technology and the media are unique to some specific cultural contexts. The book will be useful to students, researchers and policymakers in mass communication, information technology and the media.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd Jun 2000, 2000
- Brossura
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 74,65
EUR 62,88 spedizioneSpedito da Germania a U.S.A.Quantità: 2 disponibili
Taschenbuch. Condizione: Neu. Neuware - Originally published in 1986, this book consists of 100 problems in probability and statistics, together with solutions and, most importantly, extensive notes on the solutions. The level of sophistication of the problems is similar to that encountered in many introductory courses in probab…ility and statistics. At this level, straightforward solutions to the problems are of limited value unless they contain informed discussion of the choice of technique used, and possible alternatives. The solutions in the book are therefore elaborated with extensive notes which add value to the solutions themselves. The notes enable the reader to discover relationships between various statistical techniques, and provide the confidence needed to tackle new problems.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd Sep 2000, 2000
- Rilegato
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 80,06
EUR 62,77 spedizioneSpedito da Germania a U.S.A.Quantità: 1 disponibili
Buch. Condizione: Neu. Neuware - This book provides a comprehensive introduction to international political economy and to the different trade and financial issues in the contemporary international system. The modern international political economy is characterized by globalization of production and finance. This book explains t…he growth and consequences of globalization from a historical and evolutionary perspective. It explores not only the long-standing issues of trade protectionism and financial stability, but also the newer issues of international labor standards, liberalization of investment regulations, and environmental protection. One of the greatest challenges of financial globalization is the potential for destabilizing national economies through a rapid outflow of capital, as seen recently in East Asia. In this book, the East Asian currency and debt crises are examined in relation to earlier crises in Latin America in the early 1980s and in Mexico in the mid-1990s. It will help readers to understand how politics and economics interact to produce the rules and structures of international political economy, and also to better appreciate the contemporary issues, crises, and challenges in international political economy.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd 07.2000., 2000
- Rilegato
Da: Vulkaneifel Bücher, Birgel, GermaniaVulkaneifel Bücher
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Come nuovo
EUR 25,95
EUR 124,40 spedizioneSpedito da Germania a U.S.A.Quantità: 1 disponibili
hardcover. Condizione: Wie neu. 356 Seiten minimale Lagerspuren am Buch, Inhalt einwandfrei und ungelesen Sprache: Englisch Gewicht in Gramm: 670.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd Jan 2000, 2000
- Rilegato
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 103,07
EUR 63,79 spedizioneSpedito da Germania a U.S.A.Quantità: 1 disponibili
Buch. Condizione: Neu. Neuware - Price and quality alone are no longer sufficient to gain competitive advantage. It is high quality knowledge which provides the opportunities for adding exclusive value to products and services. At the same time, the development of knowledge is gaining momentum. Knowledge is becoming obsolete mor…e quickly and becomes more complex. The danger of this development is that organizations will continue to play the same competitive game and are often unaware that they are lagging behind.This book provides organizations with a way to shift the knowledge ambition and realize it in practice. For this purpose, an intelligent business strategy is offered based on the experiences of seven market leaders in The Netherlands, combined with modern insights from the organizational theory.The authors devote much attention to the tools available to the knowledge enterprise, such as lateral structures, personnel management and information technology.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd Jan 2000, 2000
- Brossura
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 108,00
EUR 63,81 spedizioneSpedito da Germania a U.S.A.Quantità: 2 disponibili
Taschenbuch. Condizione: Neu. Neuware - This book deals with the principal areas of activity in radiation physics. Although the basic descriptions of theory and practice are presented in a format which is suitable mainly as a revision text for undergraduate and postgraduate students, the book also serves as an introduction to th…e field which will be of interest to other informed workers. Detailed treatment is foregone in the interests of a comprehensive survey.The book has evolved from lectures given in the University of London MSc course on radiation physics, and from undergraduate lectures given at Queen Mary and Westfield College. Industrial as well as medical aspects of the field are considered. remove remove.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd Mai 2000, 2000
- Rilegato
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 113,01
EUR 63,18 spedizioneSpedito da Germania a U.S.A.Quantità: 1 disponibili
Buch. Condizione: Neu. Neuware - Face recognition is a task that the human vision system seems to perform almost effortlessly, yet the goal of building computer-based systems with comparable capabilities has proven to be difficult. The task implicitly requires the ability to locate and track faces through often complex and dynam…ic scenes. Recognition is difficult because of variations in factors such as lighting conditions, viewpoint, body movement and facial expression. Although evidence from psychophysical and neurobiological experiments provides intriguing insights into how we might code and recognise faces, its bearings on computational and engineering solutions are far from clear. The study of face recognition has had an almost unique impact on computer vision and machine learning research at large. It raises many challenging issues and provides a good vehicle for examining some difficult problems in vision and learning. Many of the issues raised are relevant to object recognition in general.This book describes the latest models and algorithms that are capable of performing face recognition in a dynamic setting. The key question is how to design computer vision and machine learning algorithms that can operate robustly and quickly under poorly controlled and changing conditions. Consideration of face recognition as a problem in dynamic vision is perhaps both novel and important. The algorithms described have numerous potential applications in areas such as visual surveillance, verification, access control, video-conferencing, multimedia and visually mediated interaction.The book will be of special interest to researchers and academics involved in machine vision, visual recognition and machine learning. It should also be of interest to industrial research scientists and managers keen to exploit this emerging technology and develop automated face and human recognition systems. It is also useful to postgraduate students studying computer science, electronic engineering, information or systems engineering, and cognitive psychology.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd Jul 2000, 2000
- Rilegato
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 115,15
EUR 62,00 spedizioneSpedito da Germania a U.S.A.Quantità: 2 disponibili
Buch. Condizione: Neu. Neuware - These days, an increasing amount of information can be obtained in graphical forms, such as weather maps, soil samples, locations of nests in a breeding colony, microscopical slices, satellite images, radar or medical scans and X-ray techniques. 'High level' image analysis is concerned with the g…lobal interpretation of images, attempting to reduce it to a compact description of the salient features of the scene.This book takes a stochastic approach. It studies Markov object processes, showing that they form a flexible class of models for a range of problems involving the interpretation of spatial data. Applications can be found in statistical physics (under the name of 'Gibbs processes'), environmental mapping of diseases, forestry, identification of ore structure in materials science, signal analysis, object recognition, robot vision, and interpretation of images from medical scans or confocal microscopy.
- Rilegato
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 120,89
EUR 62,57 spedizioneSpedito da Germania a U.S.A.Quantità: 1 disponibili
Buch. Condizione: Neu. Neuware - This book has been designed for a one-year graduate course on boundary value problems for students of mathematics, engineering, and the physical sciences. It deals mainly with the three fundamental equations of mathematical physics, namely the heat equation, the wave equation, and Laplace's equat…ion.
Lingua: Inglese
Editore: World Scientific Publishing Company Jul 2000, 2000
- Rilegato
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 124,48
EUR 61,88 spedizioneSpedito da Germania a U.S.A.Quantità: 2 disponibili
Buch. Condizione: Neu. Neuware - This collection of papers explore developments and advances in the field of astrophysics.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd Mär 2000, 2000
- Rilegato
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 132,94
EUR 63,40 spedizioneSpedito da Germania a U.S.A.Quantità: 2 disponibili
Buch. Condizione: Neu. Neuware - This invaluable book presents a comprehensive introduction to bifurcation theory in the presence of symmetry, an applied mathematical topic which has developed considerably over the past twenty years and has been very successful in analysing and predicting pattern formation and other critical phe…nomena in most areas of science where nonlinear models are involved, like fluid flow instabilities, chemical waves, elasticity and population dynamics.The book has two aims. One is to expound the mathematical methods of equivariant bifurcation theory. Beyond the classical bifurcation tools, such as center manifold and normal form reductions, the presence of symmetry requires the introduction of the algebraic and geometric formalism of Lie group theory and transformation group methods. For the first time, all these methods in equivariant bifurcations are presented in a coherent and self-consistent way in a book.The other aim is to present the most recent ideas and results in this theory, in relation to applications. This includes bifurcations of relative equilibria and relative periodic orbits for compact and noncompact group actions, heteroclinic cycles and forced symmetry-breaking perturbations. Although not all recent contributions could be included and a choice had to be made, a rather complete description of these new developments is provided. At the end of every chapter, exercises are offered to the reader.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd Aug 2000, 2000
- Rilegato
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 151,00
EUR 63,78 spedizioneSpedito da Germania a U.S.A.Quantità: 2 disponibili
Buch. Condizione: Neu. Neuware - For the Galvani Bicentenary Celebrations, the University of Bologna and its Academy of Sciences singled out subnuclear physics as the field of scientific research to be associated with this important event, as it would best illustrate, for the new generation of students, the challenge inherent in… fundamental sciences.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd Jan 2000, 2000
- Brossura
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 193,00
EUR 65,96 spedizioneSpedito da Germania a U.S.A.Quantità: 2 disponibili
Buch. Condizione: Neu. Neuware - This book deals with the principal areas of activity in radiation physics. Although the basic descriptions of theory and practice are presented in a format which is suitable mainly as a revision text for undergraduate and postgraduate students, the book also serves as an introduction to the field… which will be of interest to other informed workers. Detailed treatment is foregone in the interests of a comprehensive survey.The book has evolved from lectures given in the University of London MSc course on radiation physics, and from undergraduate lectures given at Queen Mary and Westfield College. Industrial as well as medical aspects of the field are considered. remove remove.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd Jul 2000, 2000
- Rilegato
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 213,00
EUR 64,16 spedizioneSpedito da Germania a U.S.A.Quantità: 2 disponibili
Buch. Condizione: Neu. Neuware - This book deals with the dynamics of mechanical systems in presence of impact and friction. The contributors are an international group of engineers and scientists from industrial and academic institutions of more than 23 countries around the world concerned with the modeling, analysis, measureme…nt and control of nonsmooth mechanical structures. Contact laws lead to mathematical models that are highly nonlinear and nonsmooth or discontinuous. Discontinuous and nonsmooth processes introduce problems with data processing techniques and analytical methods. Thanks to great advances in computer technology and computational analysis, as well as the introduction of new experimental devices such as the atomic-force microscope and the quartz-crystal-microbalance probe, the study of impact and friction -- one of the oldest problems in physics, is now in a phase of rapid and exciting development. The growing number of research breakthroughs have promoted the development of new technologies in the description and design of systems with impact and friction models to understand nature, structures, machines, transportation systems, and other processes. A fairly comprehensive picture of these new developments is presented in this book by researchers who are giving up-to-date accounts of the present state of the field in many aspects.The book is essential for introducing readers in mechanical engineering, material science, applied mathematics, aerospace engineering, ocean engineering, biomechanics, and civil engineering to recent developments in nonsmooth mechanics. It is also useful for self-study purposes by professionals and practitioners in the field.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd Okt 2000, 2000
- Rilegato
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 269,00
EUR 65,47 spedizioneSpedito da Germania a U.S.A.Quantità: 2 disponibili
Buch. Condizione: Neu. Neuware - This book introduces needed theoretical instruments and offers an up-to-date discussion on fundamental physics as well as the experimental tools used and developed for the construction and exploitation of gravitational wave antennae (resonant bars, ground-based and space interferometric detectors…). In addition, problems in the fields of optics, signal processing, control and feedback in active mechanical filtering are deeply analyzed, with reference to recent solutions adopted in the main detectors.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd Sep 2000, 2000
- Rilegato
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 311,00
EUR 65,88 spedizioneSpedito da Germania a U.S.A.Quantità: 2 disponibili
Buch. Condizione: Neu. Neuware - There have been exciting developments in the area of knot theory in recent years. They include Thurston's work on geometric structures on 3-manifolds (e.g. knot complements), Gordon -- Luecke work on surgeries on knots, Jones' work on invariants of links in S3, and advances in the theory of invar…iants of 3-manifolds based on Jones- and Vassiliev-type invariants of links. Jones ideas and Thurston's idea are connected by the following path: hyperbolic structures, PSL(2, C) representations, character varieties, quantization of the coordinate ring of the variety to skein modules (i.e. Kauffman, bracket skein module), and finally quantum invariants of 3-manifolds. This proceedings volume cover all those exciting topics.
Lingua: Inglese
Editore: World Scientific Publishing Co Pte Ltd Nov 2000, 2000
- Rilegato
Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 344,00
EUR 68,63 spedizioneSpedito da Germania a U.S.A.Quantità: 2 disponibili
Buch. Condizione: Neu. Neuware - This important book comprises a narrative account of research on the hepatitis B virus (and related subjects) and selected reprints from the laboratory of Nobel laureate Baruch S Blumberg and his colleagues. The hepatitis B virus (HBV) is one of the ten most common deadly infectious diseases and…is responsible for 1.1 million deaths a year worldwide.Research in his laboratory resulted in the discovery of HBV and the invention of the vaccine which protects one against it. The research began as an apparently esoteric study of human biochemical and immunologic variation. This required field-work in Africa, the Arctic, the Pacific, the Americas, and in many other locations and populations. The overall goal was to identify inherited biological differences which were related to differing responses to disease-causing agents. The virus was discovered using the blood of an infected person who had developed the antibody, to detect the virus present in another infected person who had become a carrier of the virus. Screening of blood donors led to the near-elimination of post-transfusion hepatitis B.There are now national HBV vaccination programs in more than 70 countries. During the past decade these programs have strikingly reduced the prevalence of HBV in many countries and there has been a significant drop in the incidence of cancer of the liver in the vaccinated cohorts. The HBV vaccination program is now, after smoking cessation, the most widely used cancer prevention program in the world.
