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Record Nr. |
UNINA9910139339603321 |
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Autore |
Adámek Jiří <1947-> |
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Titolo |
Foundations of coding : theory and applications of error-correcting codes, with an introduction to cryptography and information theory / / Jiri Adamek |
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Pubbl/distr/stampa |
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Chichester ; ; New York, : Wiley, c1991 |
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ISBN |
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9786613813954 |
9781282253308 |
1282253301 |
9781118033265 |
1118033264 |
9781118031513 |
1118031512 |
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Descrizione fisica |
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1 online resource (356 p.) |
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Disciplina |
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Soggetti |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Foundations of Coding: Theory and Applications of Error-Correcting Codes with an Introduction to Cryptography and Information Theory; Contents; CONTENTS; Introduction; Part I Coding and Information Theory; 1 Coding and Decoding; 1.1 Coding; 1.2 Unique Decoding; 1.3 Block Codes and Instantaneous Codes; 1.4 Some Important Block Codes; 1.5 Construction of Instantaneous Codes; 1.6 Kraft's Inequality; 1.7 McMillan's Theorem; Exercises; Notes; 2 Huffman Codes; 2.1 Information Source; 2.2 Huffman Codes; 2.3 Construction of Binary Huffman Codes; 2.4 Example; 2.5 Construction of General Huffman Codes |
ExercisesNotes; 3 Data Compression and Entropy; 3.1 An Example of Data Compression; 3.2 The Idea of Entropy; 3.3 The Definition of Entropy; 3.4 An Example; 3.5 Maximum and Minimum Entropy; 3.6 Extensions of a Source; 3.7 Entropy and Average Length; 3.8 Shannon's Noiseless Coding Theorem; 3.9 Concluding Remarks; Exercises; Notes; |
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4 Reliable Communication Through Unreliable Channels; 4.1 Binary Symmetric Channels; 4.2 Information Rate; 4.3 An Example of Increased Reliability; 4.4 Hamming Distance; 4.5 Detection of Errors; 4.6 Correction of Errors; 4.7 Channel Capacity |
4.8 Shannon's Fundamental TheoremExercises; Notes; Part II Error-Correcting Codes; 5 Binary Linear Codes; 5.1 Binary Addition and Multiplication; 5.2 Codes Described by Equations; 5.3 Binary Linear Codes; 5.4 Parity Check Matrix; 5.5 Hamming Codes-Perfect Codes for Single Errors; 5.6 The Probability of Undetected Errors; Exercises; Notes; Notes; 6 Groups and Standard Arrays; 6.1 Commutative Groups; 6.2 Subgroups and Cosets; 6.3 Decoding by Standard Arrays; Exercises; 7 Linear Algebra; 7.1 Fields and Rings; 7.2 The Fields Zp; 7.3 Linear Spaces; 7.4 Finite-Dimensional Spaces; 7.5 Matrices |
7.6 Operations on Matrices7.7 Orthogonal Complement; Exercises; Notes; 8 Linear Codes; 8.1 Generator Matrix; 8.2 Parity Check Matrix; 8.3 Syndrome; 8.4 Detection and Correction of Errors; 8.5 Extended Codes and Other Modifications; 8.6 Simultaneous Correction and Detection of Errors; 8.7 MacWilliams Identity; Exercises; Notes; 9 Reed-Muller Codes: Weak Codes with Easy Decoding; 9.1 Boolean Functions; 9.2 Boolean Polynomials; 9.3 Reed-Muller Codes; 9.4 Geometric Interpretation: Three-Dimensional Case; 9.5 Geometric Interpretation: General Case; 9.6 Decoding Reed-Muller Codes; Exercises; Notes |
10 Cyclic Codes10.1 Generator Polynomial; 10.2 Encoding Cyclic Codes; 10.3 Parity Check Polynomial; 10.4 Decoding Cyclic Codes; 10.5 Error-Trapping Decoding; 10.6 Golay Code: A Perfect Code for Triple Errors; 10.7 Burst Errors; 10.8 Fire Codes: High-Rate Codes for Burst Errors; Exercises; Notes; 11 Polynomials and Finite Fields; 11.1 Zeros of Polynomials; 11.2 Algebraic Extensions of a Field; 11.3 Galois Fields; 11.4 Primitive Elements; 11.5 The Characteristic of a Field; 11.6 Minimal Polynomial; 11.7 Order; 11.8 The Structure of Finite Fields; 11.9 Existence of Galois Fields; Exercises |
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Sommario/riassunto |
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Although devoted to constructions of good codes for error control, secrecy or data compression, the emphasis is on the first direction. Introduces a number of important classes of error-detecting and error-correcting codes as well as their decoding methods. Background material on modern algebra is presented where required. The role of error-correcting codes in modern cryptography is treated as are data compression and other topics related to information theory. The definition-theorem proof style used in mathematics texts is employed through the book but formalism is avoided wherever possible. |
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2. |
Record Nr. |
UNINA9910265129103321 |
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Autore |
Botyriute |
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Titolo |
Access to Online Resources : A Guide for the Modern Librarian / / by Kristina Botyriute |
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Pubbl/distr/stampa |
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2018 |
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Cham : , : Springer International Publishing : , : Imprint : Springer, , 2018 |
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ISBN |
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Edizione |
[1版. 2018.] |
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Descrizione fisica |
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1 online resource (VII, 42 p. 49 illus.) |
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Classificazione |
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BUS070060COM005030COM032000EDU039000LAN025000 |
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Altri autori (Persone) |
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Disciplina |
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Soggetti |
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Library science |
Business information services |
Application software |
Educational technology |
Advertising media planning |
Library Science |
Business Information Systems |
Computer and Information Systems Applications |
Digital Education and Educational Technology |
Media Planning |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di contenuto |
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Introduction -- Authentication and Authorisation -- Web based Authentication -- IP Address Recognition -- SAML -- OpenID Connect -- Basic Trouble Shooting. . |
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Sommario/riassunto |
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This book is published open access under a CC BY 4.0 licence.The book offers a concise guide for librarians, helping them understand the challenges, processes and technologies involved in managing access to online resources. After an introduction the book presents cases of general authentication and authorisation. It helps readers understand web based authentication and provides the fundamentals of IP address recognition in an easy to understand manner. A special chapter is |
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dedicated to Security Assertion Markup Language (SAML), followed by an overview of the key concepts of OpenID Connect. The book concludes with basic troubleshooting guidelines and recommendations for further assistance. Librarians will benefit from this quick and easy read, which demystifies the technologies used, features real-life scenarios, and explains how to competently employ authentication and access management. |
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