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This book is intended for designers of military and civil ... Read more

This book is intended for designers of military and civil systems, such as systems for guiding and control, target acquisition, surveillance, laser range-finding, fiber-optical communications, thermal imaging and the like, as well as for designers of photodetectors for optical signal detection. The first question they face is how to detect an ultimately weak optical signal. This book gives the answer to this most important question. All the main types of photodetectors are considered, from photodiodes (including avalanche photodiodes) to focal plane arrays (FPA). Methods of matching photodetectors with preamplifiers are described. The pair photodetector plus preamplifier is treated as an integrated detection system. Much attention is paid to different types of noise and ways of maximising the signal-to-noise ratio (SNR). Foundations of theory of optimal filtering of photosignals are discussed taking due account of typical shapes of optical signals and noise spectra. Methods for tuning quasi-optimal filters to maximise the SNR are explained. The main problems associated with detection of low-level optical signals are considered: operation of avalanche photodiodes in photon count mode, filtering in the case of charge accumulation in FPA cells, and the effect of the number of pixels and geometry of FPAs on detection. Finally, using the examples of the laser range finder and IR Imager, we give guidelines for calculating the limiting parameters of optoelectronic systems to achieve the highest possible SNR. The book is based on many years' experience by the author and his colleagues in the development of photodetectors and FPAs. The book is aimed at research workers, engineers, students and postgraduates. Minimize

* Cryptography is the study of message secrecy and is used ... Read more

* Cryptography is the study of message secrecy and is used in fields such as computer science, computer and network security, and even in instances of everyday life, such as ATM cards, computer passwords, and electronic commerce. Thanks to his innovative and ingenious books on the subject of cryptography, Bruce Schneier has become the world's most famous security expert. Now, his trio of revolutionary titles can be found in this unprecedented, value-priced collection.* Applied Cryptography: Protocols, Algorithms, and Source Code in C, Second Edition: This seminal encyclopedic reference provides readers with a comprehensive survey of modern cryptography. It describes dozens of cryptography algorithms, offers practical advice on how to implement them into cryptographic software, and shows how they can be used to solve security problems.* Secrets and Lies: Digital Security in a Networked World: This narrative, straight-talking bestseller explains how to achieve security throughout computer networks. Schneier examines exactly what cryptography can and cannot do for the technical and business community.* Practical Cryptography: As the ideal guide for an engineer, systems engineer or technology professional who wants to learn how to actually incorporate cryptography into a product, this book bridges the gap between textbook cryptography and cryptography in the real world. Minimize

The ethanol plants of today will be the biorefineries of to ... Read more

The ethanol plants of today will be the biorefineries of tomorrow. The days of big oil are coming to an end. Did you know that the Earth's known supply of oil and gas will last only another 30 to 50 years? And that instead of using less of these disappea Minimize

The white t-shirt is a timeless classic for a reason; it sh ... Read more

The white t-shirt is a timeless classic for a reason; it should be a staple in every wardrobe. It is clean, simple, and durable. The best part is you can wear it with anything. This 100% cotton T-shirt is so comfortable you'll want to wear it to bed.. About our White T-Shirt: The white t-shirt is a timeless classic for a reason; it should be a staple in every wardrobe. It is clean, simple, and durable. The best part is you can wear it with anything. This 100% cotton T-shirt is so comfortable you'll want to wear it to bed.. Humor Tee, TShirt, Shirt Minimize

Understanding science means understanding the world around ... Read more

Understanding science means understanding the world around you. It also means having fun! The Super Science Book uses stuff you can find around the house to explain and demonstrate dozens of science concepts. The explanations are clear and the experiments and activities let you see and understand the science close-up. Use the book to satisfy your scientific curiosity, or to provide ideas for science fair projects. Minimize

This book is the only comprehensive treatise on the Library ... Read more

This book is the only comprehensive treatise on the Library of Congress Subject Headings (LCSH) system. It offers users a complete and definitive guide to a challenging area of study. Chan presents a brief history of the system, analyzes its principles, and describes its vocabulary and subject authority control. She then discusses the application of LC subject headings to LC MARC records and outlines the Library of Congress's policies on the assignment of subject headings in general and the treatment of certain types of materials in particular. This new edition updates the text according to policies governing current practices in using LCSH, and the highlighted relevance of LCSH in the global electronic environment. Part 3, completely rewritten, includes a chapter on FAST (Faceted Application of Subject Terminology), which is an LCSH-based controlled vocabulary for electronic resources. Minimize

Free Worldwide Delivery : Foundations of Library and Inform ... Read more

Free Worldwide Delivery : Foundations of Library and Information Science : Paperback : Neal-Schuman Publishers Inc : 9781555706906 : 1555706908 : 15 May 2010 Minimize

The increasing risk of severe droughts and water shortages ... Read more

The increasing risk of severe droughts and water shortages emphasizes the need for an integrated approach to drought mitigation. However, effective tools for the implementation of such an approach have not been available till now. This book contributes to an improved preparedness for drought in water supply systems, providing tools useful for a better decision making process in drought management. It presents methods and software features of a Decision Support System (DSS) developed within a European research project and consists of three main parts. The first part deals with the advanced techniques for hydrological drought identification and monitoring; the second analyses the successful use of climate-crop-soil models in defining deficit irrigation strategies; the third provides tools for improving the operation of irrigation supply reservoirs. All methods are embedded in a user-friendly DSS package that has been applied in several Case Studies of Mediterranean countries (Portugal, Italy, Tunisia, Jordan and Syria) and whose results are also compared. Minimize

ISBN13: 9781555706906. ISBN10: 1555706908. by Richard Rubin ... Read more

ISBN13: 9781555706906. ISBN10: 1555706908. by Richard Rubin. Published by American Library Association. Edition: 3RD 11 Minimize

She Blinded me with Library Science. About our White T-Shir ... Read more

She Blinded me with Library Science. About our White T-Shirt: The white t-shirt is a timeless classic for a reason; it should be a staple in every wardrobe. It is clean, simple, and durable. The best part is you can wear it with anything. This 100% cotton T-shirt is so comfortable you'll want to wear it to bed.. Humor Tee, TShirt, Shirt Minimize

This latest edition continues to cover all phases of collec ... Read more

This latest edition continues to cover all phases of collection development—from needs assessment, policies, and the selection process (theory and practice), to publishers, serials, protection, legal issues, censorship, and intellectual freedom. Each chapter has been extensively revised to reflect changing practices, policies, and technologies. To this end, some chapters—electronic materials, government information, audiovisual materials, and resource sharing—have been almost completely rewritten. In addition, electronic serials, introduced in the fourth edition, has been combined with its print counterpart in a single chapter. New to this edition is a CD containing supplementary material; a companion website () will also be maintained to ensure URLs referenced throughout the text are kept up to date. As the authors put it in their introductory chapter, whatever environment one works in, collection development is an exciting challenge that requires lifelong learning. Students and practitioners alike will benefit greatly from this state-of-the-art text. Minimize

Photo Mug, Bacterial ribosome. Bacterial ribosome. Computer ... Read more

Photo Mug, Bacterial ribosome. Bacterial ribosome. Computer model showing the secondary structure of a 30S (small) ribosomal sub-unit from the bacteria Thermus thermophilus. Ribosomes are composed of protein and RNA (ribonucleic acid). They are the site of translation, the process of protein synthesis. In bacteria they are also a target for antibiotic drugs. Chosen by Science Photo Library. 11oz White ceramic coffee mug e. Image printed Minimize

This latest edition continues to cover all phases of collec ... Read more

This latest edition continues to cover all phases of collection development—from needs assessment, policies, and the selection process (theory and practice), to publishers, serials, protection, legal issues, censorship, and intellectual freedom. Each chapter has been extensively revised to reflect changing practices, policies, and technologies. To this end, some chapters—electronic materials, government information, audiovisual materials, and resource sharing—have been almost completely rewritten. In addition, electronic serials, introduced in the 4th edition, has been combined with its print counterpart in a single chapter. New to this edition is a CD containing supplementary material; a companion Web site () will also be maintained to ensure URLs referenced throughout the text are kept up to date. As the authors put it in their introductory chapter, whatever environment one works in, collection development is an exciting challenge that requires lifelong learning. Students and practitioners alike will benefit greatly from this state-of-the-art text. Minimize

Darwin had long been fascinated by insectivorous plants, fr ... Read more

Darwin had long been fascinated by insectivorous plants, from the native British sundews and bladderworts to the exotic pinguiculas and nepenthes which he encountered during the Beagle voyage. Growing in environments low in soil nutrients, their highly specialised ways of obtaining enough food, including the capability for fast movement in the case of the Venus flytrap, were evidence of evolutionary adaptation. But he was also interested in what food they needed, and whether they would be selective when offered a varied diet; and how did the flytrap close its trap on its prey? Darwin conducted a range of simple but ingenious experiments on his collection of insectivores and observed and noted the results of each with his customary meticulousness. The results can be seen in this book, which remains of enormous interest to anyone whose imagination has been fired by these strange and beautiful plants. Minimize

Erasmus Darwin (1731-1802) is remembered not only as the gr ... Read more

Erasmus Darwin (1731-1802) is remembered not only as the grandfather of Charles but as a pioneering scientist in his own right. A friend and correspondent of Josiah Wedgwood, Joseph Priestley and Matthew Boulton, he practised medicine in Lichfield, but also wrote prolifically on scientific subjects. He organised the translation of Linnaeus from Latin into English prose, coining many plant names in the process, and also wrote a version in verse, The Loves of Plants. The aim of his Zoonomia, published in two volumes (1794-6), is to 'reduce the facts belonging to animal life into classes, orders, genera, and species; and by comparing them with each other, to unravel the theory of diseases'. The first volume describes human physiology, especially importance of motion, both voluntary and involuntary; the second is a detailed description of the symptoms of, and the cures for, diseases, categorised according to his physiological classes. Minimize

Show love for your librarians. About our Women's Cap Sleeve ... Read more

Show love for your librarians. About our Women's Cap Sleeve T-Shirt: Get into sporty, stylin' casual comfort with our Women's Cap Sleeve Raglan. Looks great on the go or just hangin' out. Made of 100% combed ring-spun cotton that gets even softer with each washing.6.1 oz 100% combed ring-spun cotton 1x1 rib. Minimize

Foundations of Library and Information Science is the most ... Read more

Foundations of Library and Information Science is the most current introductory text available, covering the practice of librarianship, the place of libraries in the broader information infrastructure, the development of information science, and more. Library and information science students and professionals will find the background and concepts they need to meet today's - and tomorrow's - challenges. TABLE OF CONTENTS: 1. The Information Infrastructure: Libraries in Context; 2. Information Science: A Service Perspective; 3. Redefining the Library: The Impacts and Implications of Technological Change; 4. Information Policy: Stakeholders and Agendas; 5. Information Policy as Library Policy: Intellectual Freedom; 6. Information Organization: Issues and Techniques; 7. From Past to Present: The Library s Mission and Its Values; 8. Ethics and Standards: Professional Practices in Library and Information Science; 9. The Library as Institution: An Organizational View, and 10. Librarianship: An Evolving Profession. Minimize

Erasmus Darwin (1731-1802) is remembered not only as the gr ... Read more

Erasmus Darwin (1731-1802) is remembered not only as the grandfather of Charles but as a pioneering scientist in his own right. A friend and correspondent of Josiah Wedgwood, Joseph Priestley and Matthew Boulton, he practised medicine in Lichfield, but also wrote prolifically on scientific subjects. He organised the translation of Linnaeus from Latin into English prose, coining many plant names in the process, and also wrote a version in verse, The Loves of Plants. The aim of his Zoonomia, published in two volumes (1794-6), is to 'reduce the facts belonging to animal life into classes, orders, genera, and species; and by comparing them with each other, to unravel the theory of diseases'. The first volume describes human physiology, especially importance of motion, both voluntary and involuntary; the second is a detailed description of the symptoms of, and the cures for, diseases, categorised according to his physiological classes. Minimize

The latest edition of this management classic sports a fres ... Read more

The latest edition of this management classic sports a fresh new look to complement its updated content. It continues to cover all of the important functions involved in library management and development. New chapters on marketing, team building, and ethics have been added; thought provoking mini-cases and other activities introduced or expanded; and more international materials referenced than ever before. A perennial favorite in the classroom, an invaluable reference source for information managers everywhere. Minimize

You're a vertebrate, and many of our favorite animals are v ... Read more

You're a vertebrate, and many of our favorite animals are vertebrates! Learn more about them in this unique program that teaches basic science concepts, as well as how to apply them. Four sections are included-How to Use this Program; a Teacher's Section with lessons, activities, enrichment & materials needed; Lots of Science Library reproducible mini-books to be read to or by the students; and Graphic Pages, listed by lesson number, that provides pictures and graphics to use used with the activities. Concepts, vocabulary words, research, investigative loops, and additional ideas for experiences and research are provided. Learn about fish, amphibians, reptiles, birds, and mammals and dig a little deeper ! 68 lesson pages, plus lots of blackline masters! Softcover. Grades K-8. Minimize

Greeting cards are a great way to express yourself and to k ... Read more

Greeting cards are a great way to express yourself and to keep in touch with friends and family. A personal note on a beautiful card will make a lasting impression and a touching keepsake.Available in your choice of paper stock. About our Greeting Cards Pk of 10: Greeting cards are a great way to express yourself and to keep in touch with friends and family. A personal note on a beautiful card will make a lasting impression and a touching keepsake.Available in your choice of paper stock. Humor Minimize

The latest edition of this management classic sports a fres ... Read more

The latest edition of this management classic sports a fresh new look to complement its updated content. It continues to cover all of the important functions involved in library management and development. New chapters on marketing, team building and ethics have been added; thought provoking mini-cases and other activities introduced or expanded; and more international materials referenced than ever before. A perennial favorite in the classroom, an invaluable reference source for information managers everywhere. Minimize

Encyclopedia of Pollution is a new, two-volume color set de ... Read more

Encyclopedia of Pollution is a new, two-volume color set designed to address all aspects of pollution and the global impact on the environment in a single source. Containing more than 300 entries and essays interspersed throughout, it uses the most current scientific data to explain the different types of pollutants including properties, production, uses, environmental release and fate, adverse health response to exposure, and environmental regulations on human exposure. It provides the scientific background on the water, soil, and air of environments where the pollutants are released. Coverage also includes pollution regulation, the function of federal regulatory agencies and environmental advocacy groups, and the technology and methods to reduce pollution and to remediate existing pollution problems. Numerous case studies explore the most infamous of pollution events such as the Exxon Valdez oil spill, the Gulf Storm oil well fires, the Chernobyl disaster, Hurricane Katrina, the World Trade Center disaster, and the Love Canal in New York, among many others including those that had great impact on legislation or that were used in popular media such as the films Erin Brockovich and A Civil Action. Biographies are provided of some of the leaders and pioneers of pollution study and activism. Other useful features include a detailed glossary, indexes, a timeline, and tables. Minimize

Photo Mug, Paclitaxel drug molecule. Paclitaxel. Computer m ... Read more

Photo Mug, Paclitaxel drug molecule. Paclitaxel. Computer model of a molecule of the drug paclitaxel. It is sold under the brand name Taxol. It is a chemotherapy drug, used to treat cancers. The molecules chemical formula is C47.H51.N.O14. Atoms (spheres) are colour-coded carbon (grey), hydrogen (light blue), nitrogen (dark blue), oxygen (orange). Chosen by Science Photo Library. 11oz White ceramic coffee mug e. Image printed using sublimation Minimize

The extensively revised and completely updated second editi ... Read more

The extensively revised and completely updated second edition of this popular textbook provides LIS practitioners and students with a vital guide to the organization of information. After a broad overview of the concept and its role in human endeavors, Taylor proceeds to a detailed and insightful discussion of such basic retrieval tools as bibliographies, catalogs, indexes, finding aids, registers, databases, major bibliographic utilities, and other organizing entities. After tracing the development of the organization of recorded information in Western civilization from 2000 B.C.E. to the present, the author addresses topics that include encoding standards (MARC, SGML, and various DTDs), metadata (description, access, and access control), verbal subject analysis including controlled vocabularies and ontologies, classification theory and methodology, arrangement and display, and system design. Minimize