How do digital signatures ensure the integrity of a message and verify who wrote it? Ans: Digital Signatures apply the same functionality to an e-mail message or data file that a handwritten signature does for a paper-based document. The Digital Signature vouches for the origin and integrity of a message, document or other data file. 4. What is a Certificate authority? (CA) Ans: In cryptography, a certificate authority or certification authority (CA) is an entity that issues digital certificates
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Product: DVD PALYER CUSTOMER STATEMENT | NAME OF CUSTOMER | NEED STATEMENT | 1. My DVD player can’t play movies that have different file types. | Ailene Panisales | The DVD player functions well. | 2. It occupies more space in our cabinet. | Patricia Bernardino | It is compact in storage. | 3. The DVD player is not portable. | Jona de Villa | The DVD player is portable. | 4. It has a USB port. | Chanber Salcedo | The DVD player is equipped with USB port. | 5. The DVD player has
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continued to evolve, listening in on someone’s privacy has become easier than ever. There are digital eavesdropping devices that are no bigger than an AA battery and can record over thousands of hours of your private conversations. Also, in some cases, can even be used to record land line telephones and can even eavesdrop on cell phones. The need for a bulky cassette recorder is history. These new digital audio recording and eavesdropping devices are small, sleek, covert, and can be hidden almost
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en un país y su velocidad, este concepto es un concepto dinámico, no paran de crecer ni desarrollarse. Durante los años los países ricos o desarrollados han invertido mucho en estas tecnologías, incrementando su velocidad de desarrollo y la brecha digital y social entre diferentes generaciones, las TIC no solo son una poderosa herramienta de desarrollo sino que a su vez miden el nivel de desarrollo, ocupando un lugar muy importante en la vida de las personas y el funcionamiento de las sociedades.
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Eastman, who founded Kodak in 1885, had two prerogatives. The first one was to create a common product: something as a user friendly product “as convenient as a pencil”, and second was to develop a revolutionary invention, anticipating customers’ needs. This long run approach allowed Kodak to blow away all its competitors consequently leading the firm to dominate the film and camera markets by 1976. At that time Kodak represented 90% of the film market and 85% of the camera market. Since the beginning
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Language Learning & Technology Vol.11, No.1, February 2007, pp. 67-86 External links valid at time of publication ARE THEY WATCHING? TEST-TAKER VIEWING BEHAVIOR DURING AN L2 VIDEO LISTENING TEST Paginated PDF Version Elvis Wagner Teachers College, Columbia University ABSTRACT The accessibility of video technology has made it possible to utilize both the auditory and visual channels to present listening texts in the second language (L2) classroom and on L2 listening tests
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tasked with transforming K from a photographic company into a world leader in digital imaging. At this time, K was the US market leader in still digital cameras (#3 worldwide) & led the retail market in printed digital photographs and digital dental imaging -However, K posted an operating loss of $600 m and net loss of $1362 m for this year (traditional film business was declining faster than they’d anticipated, and the digital business—with intense competition, compressed product cycles, and declining
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increasingly affordable. Tablets cost on average $489 in 2011, $386 in 2012, and are projected to cost $263 in 2015. 5. Tablets help to improve student achievement on standardized tests. Publisher Houghton Mifflin Harcourt tested an interactive, digital version of an Algebra 1 textbook for Apple's iPad in California's Riverside Unified School District. Students who used the iPad version scored 20 percent higher on standardized tests versus students who learned with traditional textbooks. 6
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Basic IIR Digital Filter Structures • The causal IIR digital filters we are concerned with in this course are characterized by a real rational transfer function of z −1 or, equivalently by a constant coefficient difference equation • From the difference equation representation, it can be seen that the realization of the causal IIR digital filters requires some form of feedback 3 Copyright © 2005, S. K. Mitra Basic IIR Digital Filter Structures • An N-th order IIR digital transfer function
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has sent out to his employees at Kodak. In this communication message it will give information about the change Kodak is making into the digital world. Memorandum To: All Staff From: Mr. George Fisher, CEO Date: January 12, 2002 Subject: Changes to come For the past ten years we have been designing a strategy to embark on a new change into the digital world, leaving behind the existence of the use of film. It is crucial that we stay above our competitors and continue to change and explore
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