The definitive guide to how computers do math

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Chey Cobb

Cryptography is the most effective way to achieve data security and is essential to e-commerce activities such as online shopping, stock trading, and banking This invaluable introduction to the basics of encryption covers everything from the terminology used in the field to specific technologies to the pros and cons of different implementations Discusses specific technologies that incorporate cryptography in their design, such as authentication methods, wireless encryption, e-commerce, and smart cards Based entirely on real-world issues and situations, the material provides instructions for already available technologies that readers can put to work immediately Expert author Chey Cobb is retired from the NRO, where she held a Top Secret security clearance, instructed employees of the CIA and NSA on computer security and helped develop the computer security policies used by all U.S. intelligence agencies

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Ee-Leng Tan, Woon-Seng Gan

This book first introduces classic as well as recent computational models for just-noticeable-difference (JND) applications. Since the discrete cosine transform (DCT) is applied in many image and video standards (JPEG, MPEG-1/2/4, H.261/3), the book also includes a comprehensive survey of computational models for JND that are based on DCT. The visual factors used in these computational models are reviewed in detail. Further, an extensive comparative analysis of these models using quantitative and qualitative performance criteria is presented, which compares the noise shaping performance of these models with subjective evaluation and the accuracy between the estimated JND thresholds and subjective evaluation. There are many surveys available on computational models for JND; however, these surveys seldom compare the performance of computational models that are based on DCT. The authors? survey of the computational models and their in-depth review of the visual factors used in them will help readers understand perceptual image coding based on DCT. The book also provides a comparative analysis of several perceptual image coders that are based on DCT, which are compatible with the highly popular and widely adopted JPEG standard.

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Xinyuan Wu, Xiong You, Bin Wang

Structure-Preserving Algorithms for Oscillatory Differential Equations describes a large number of highly effective and efficient structure-preserving algorithms for second-order oscillatory differential equations by using theoretical analysis and numerical validation. Structure-preserving algorithms for differential equations, especially for oscillatory differential equations, play an important role in the accurate simulation of oscillatory problems in applied sciences and engineering. The book discusses novel advances in the ARKN, ERKN, two-step ERKN, Falkner-type and energy-preserving methods, etc. for oscillatory differential equations.The work is intended for scientists, engineers, teachers and students who are interested in structure-preserving algorithms for differential equations. Xinyuan Wu is a professor at Nanjing University; Xiong You is an associate professor at Nanjing Agricultural University; Bin Wang is a joint Ph.D student of Nanjing University and University of Cambridge.

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Kevin Hoffman, Lonny Kruger

Microsoft Visual C# .NET 2003 Unleashed is a comprehensive reference and learning guide for the .NET Framework, using C# as the instructional language. The reader will be exposed to everything from low-level information on the Garbage Collector all the way to advanced concepts like creating applications that use Enterprise Services, creating Web Services, and even advanced Windows GUI. This book acts as the definitive source of information for any C# programmer, whether they've been using C# since the original beta or whether they're learning the language and the .NET Framework for the first time. The book's lay-flat design makes it ideal as a desk reference, and the online searching and indexing through Safari make it the perfect tool for the developer who needs information quickly.