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Encryption and Decryption Algorithms for Plain Text and Images using Fractional Calculus
Author: Rafael Martínez-Guerra
language: en
Publisher: Springer Nature
Release Date: 2023-01-17
This book offers an alternative for encrypting and decrypting messages using objects called integer and fractional-order estimators or observers, by means of security codes. The authors first establish the class of observers capable of carrying out this work. Then, the type of observers to treat either the integer or fractional order type and their main characteristics is mentioned. The book also presents an essential property of some systems such as Liouville, which is vital for the encryption and decryption of messages in integer and fractional order nonlinear systems by using the synchronization property of chaotic systems. Finally, it addresses some logistic maps such as Mandelbrot sets including Julia and fractal sets, taking advantage of their characteristics to encrypt or recover messages.
Computer Networks
This book constitutes the thoroughly refereed proceedings of the 21st International Conference on Computer Networks, CN 2014, held in Brunów, Poland, in June 2014. The 34 revised full papers presented were carefully reviewed and selected for inclusion in the book. The papers in these proceedings cover the following topics: computer networks, tele informatics and communications, new technologies, queueing theory, innovative applications and networked and IT-related aspects of e-business.
Office 2008 for Macintosh: The Missing Manual
Author: Jim Elferdink
language: en
Publisher: "O'Reilly Media, Inc."
Release Date: 2008-03-20
Still the top-selling software suite for Mac users, Microsoft Office has been improved and enhanced to take advantage of the latest Mac OS X features. You'll find lots of new features in Office 2008 for Word, Excel, PowerPoint and Entourage, but not a page of printed instructions to guide you through the changes. Office 2008 for Macintosh: The Missing Manual gives you the friendly, thorough introduction you need, whether you're a beginner who can't do more than point and click, or a power user who's ready to tackle a few advanced techniques. To cover Word, Excel, PowerPoint and Entourage, this guide gives you four superb books in one -- a separate section each for program! You can manage your day and create professional-looking documents, spreadsheets, and presentations in no time. Office 2008 has been redesigned so that the windows, toolbars, and icons blend in better with your other Mac applications. But there are still plenty of oddities. That's why this Missing Manual isn't shy about pointing out which features are gems in the rough -- and which are duds. With it, you'll learn how to: Navigate the new user interface with its bigger and more graphic toolbars Use Word, Excel, PowerPoint, and Entourage separately or together Keep track of appointments and manage daily priorities with the My Day feature Create newsletters, flyers, brochures, and more with Word's Publishing Layout View Build financial documents like budgets and invoices with Excel's Ledger Sheets Get quick access to all document templates and graphics with the Elements Gallery Organize all of your Office projects using Entourage's Project Center Scan or import digital camera images directly into any of the programs Customize each program with power-user techniques With Office 2008 for Macintosh: The Missing Manual, you get objective and entertaining instruction to help you tap into all of the features of this powerful suite, so you can get more done in less time.