An information retrieval (IR) system is designed to analyse, process and store sources of information and retrieve those that match a particular user's requirements. A bewildering range of techniques is now available to the information professional attempting to successfully retrieve information. It is recognized that today's information professionals need to concentrate their efforts on learning the techniques of computerized IR. However, it is this book's contention that it also benefits them to learn the theory, techniques and tools that constitute the traditional approaches to the organization and processing of information. In fact much of this knowledge may still be applicable in the storage and retrieval of electronic information in digital library environments. The fully revised third edition of this highly regarded textbook has been thoroughly updated to incorporate major changes in this rapidly expanding field since the second edition in 2004, and a complete new chapter on citation indexing has been added. Unique in its scope, the book covers the whole spectrum of information storage and retrieval, including: users of IR and IR options; database technology; bibliographic formats; cataloguing and metadata; subject analysis and representation; automatic indexing and file organization; vocabulary control; abstracts and indexing; searching and retrieval; user-centred models of IR and user interfaces; evaluation of IR systems and evaluation experiments; online and CD-ROM IR; multimedia IR; hypertext and mark-up languages; web IR; intelligent IR; natural language processing and its applications in IR; citation analysis and IR; IR in digital libraries; and trends in IR research. Illustrated with many examples and comprehensively referenced for an international audience, this is an indispensable textbook for students of library and information studies. It is also an invaluable aid for information practitioners wishing to brush up on their skills and keep up to date with the latest techniques.

The entire contents of the Dictionary of Pharmacological Agents- with 8,200 entries containing key information on over 30,000 drugs and pharmacological compounds.... PLUS Monographs from the PDR (Physicians' Desk Reference) Generics-full monographs on the top 2,000 drugs

A triennial summation of the state of the art in radio science This book is the fourth in the modern series of triennial reviews prepared by the International Union of Radio Science to further communication and understanding of the status and future of radio science, both for those working in the field, and for those who want to know what is of current importance in this area. The International Union of Radio Science, URSI (Union Radio-Scientifique Internationale), has divided the subject of "Radio Science" according to the ten topics of the Scientific Commissions that make up URSI. This volume consists of thirty-eight original, peer-reviewed papers. Each paper provides a critical, in-depth review of–and, in many cases, tutorial on–advances and research that have been of significant importance within the area of interest of the Commissions during the past three to four years. Among the topics covered are: Electromagnetic metrology Fields and waves Signals and systems Electronics and photonics Electromagnetic noise and interference Wave propagation and remote sensing Ionospheric radio and propagation Waves in plasmas Radio astronomy Electromagnetics in biology and medicine With an included CD-ROM of the full book text, allowing the user to do full-text searching of all the papers, the Review of Radio Science: 1999—2002 is a resource of vital importance to anyone working in, or with an interest in, radio science.

This title was first published in 2000: For its third edition, this text on knowledge organization and retrieval has been revised and restructured to accommodate the increased significance of electronic information resources. With new sections on topics such as information retrieval via the Web, metadata and managing information retrieval systems, the book explains principles relating to hybrid print-based and electronic networked environments experienced by today's users. The book is an accessible introduction to knowledge organization for both undergraduate and postgraduate students of information management and information systems.

Business Research Handbook is the best strategic approach to research. It gives you ready-to-adapt strategies that streamline and focus your information search, complete with: Procedures that progressively sift and regroup your research decision points that allow you to evaluate which steps remain The most cost-effective ways to take advantage of today's electronic media resources Efficient ways to retrieve the information your search has located. Easy-to-adapt sample research strategies are found throughout the book to help you confidently and quickly conduct your research in unfamiliar areas. You will find that the Business Research Handbook is designed in a graphic, user-friendly format with easy-to-recognize icons as reference pointers, and extensive lists of sources and material to help you obtain the information you need to: Compile biographical information on key players or parties Investigate potential business partners or competitors Engage in marketing research Compile a company profile Locate expert witnesses and verify credentials And much more.

One of the characteristics of the final decade of this century is the treatment of information as a commodity. As the world becomes increasingly dominated by information and its technology, in all its facets, librarians must learn to integrate all the new developments into daily practice. 'It is to the extent to which we shall succeed in developing powerful information networks through efficient information transfer that we shall succeed in contributing to the betterment of health throughout our nations'. It is this challenge which medical librarians from some 34 countries set for themselves in convening the Third European Conference of Medical Libraries in Montpellier, France, in September 1992. All aspects of medical information were addressed - the technical aspects of transfer, ethical and legal issues, costs, benefits, rights and responsibilities, quality assurance, guidance systems, communications technology, education and training both of information professionals and end-users were discussed and debated in depth in Montpellier. This volume presents an accurate account of a conference which has made a significant contribution to the development of medical librarianship in Europe and the wider world.

The Encyclopedia of Library and Information Sciences, comprising of seven volumes, now in its fourth edition, compiles the contributions of major researchers and practitioners and explores the cultural institutions of more than 30 countries. This major reference presents over 550 entries extensively reviewed for accuracy in seven print volumes or online. The new fourth edition, which includes 55 new entires and 60 revised entries, continues to reflect the growing convergence among the disciplines that influence information and the cultural record, with coverage of the latest topics as well as classic articles of historical and theoretical importance.

Contains information on the compilation of enumerative and analytical bibliographies, the use of electronic help to search out bibliographic material, career opportunities in the fields related to bibliographic study, the future of bibliography, and the history of the creation of bibliographies. This new edition has been revised to take into account the impact of computer technology and new media practices. Annotation copyrighted by Book News, Inc., Portland, OR