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ArticleEncryption and decryptionEncryption and decryption address the problem of eavesdropping, one of the three Internet security issues mentioned at the beginning of this document. But encryption and decryption, by themselves, do not address another problem: tampering. This section describes how public-key cryptography addresses the problem of tampering. Tamper detection and related authentication techniques rely on a mathematical function called a one-way hash (also called a message digest). A one-way hash is a number of fixed length with the following characteristics: The value of the hash is unique for the hashed data. Any change in the data, even deleting or altering a single character, results in a different value. The content of the hashed data cannot, for all practical purposes, be deduced from the hash-which is why it is called "one-way."By: rupaliWednesday, May 12, 2021WATER, ENERGY, AND THE ENVIRONMENT+1
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Articlesymmetric-key encryptionWith symmetric-key encryption, the encryption key can be calculated from the decryption key and vice versa. With most symmetric algorithms, the same key is used for both encryption and decryption.Implementations of symmetric-key encryption can be highly efficient so that users do not experience any significant time delay as a result of the encryption and decryption. Symmetric-key encryption also provides a degree of authentication, since information encrypted with one symmetric key cannot be decrypted with any other symmetric key. Thus, as long as the symmetric key is kept secret by the two parties using it to encrypt communications, each party can be sure that it is communicating with the other as long as the decrypted messages continue to make sense.By: Vijaya Super adminWednesday, May 12, 2021WATER, ENERGY, AND THE ENVIRONMENT+1
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ArticleEducationEducator Reflection What is communication (and what isn’t it)? The P21 framework emphasizes effective use of oral, written, and nonverbal communication skills for multiple purposes (e.g., to inform, instruct, motivate, persuade, and share ideas). It also focuses on effective listening, using technology to communicate, and being able to evaluate the effectiveness of communication efforts—all within diverse contexts (adapted from P21). Note that working in partners is a great way to collaborate or build shared understanding but a critical part of communication is sharing with an authentic audience.By: Abira GroozWednesday, May 12, 2021CULTURE AND SOCIETY+2
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PostThe 4Cs for 21st century learning are Creativity, Critical Thinking, Communication, and Collaboration. They are part of the framework for 21st Century Learning and are designed to support student learning in today’s world and are skills they can use in college and career.By: Abira GroozThursday, May 13, 2021CULTURE AND SOCIETY+2
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ArticleHow does cloud computing workYou also have to purchase software as well as software licenses and then provide these softwares to your employees as they require. Whenever you hire a new employee, you need to buy more software or make sure your current software license allows another user. It is so stressful that you have to spend lots of money. But, there may be an alternative for executives like you. So, instead of installing a suite of software for each computer, you just need to load one application. That application will allow the employees to log-in into a Web-based service which hosts all the programs for the user that is required for his/her job. Remote servers owned by another company and that will run everything from e-mail to word processing to complex data analysis programs. It is called cloud computing, and it could change the entire computer industry.By: rupaliWednesday, May 12, 2021EDUCATION
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PostScholarships are awarded by a number of funding sources. These can include businesses, religious groups, individuals, community organizations, college departments or alumni. Grants are different in that they usually come from state or federal financial aid that is given to the college or university itself.By: Jenson WinstonThursday, May 13, 2021CULTURE AND SOCIETY+1
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PostIn-Game advertising is defined as the "inclusion of products or brands within a digital game." The game allows brands or products to place ads within their game, either in a subtle manner or in the form of an advertisement banner. There are many factors that exist in whether brands are successful in the advertising of their brand/product, these being: Type of game, technical platform, 3-D and 4-D technology, game genre, congruity of brand and game, prominence of advertising within the game. Individual factors consist of attitudes towards placement advertisements, game involvement, product involvement, flow, or entertainment.By: Vijaya Super adminThursday, May 13, 2021EDUCATION
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