Introduction Data communications (Datacom) is the engineering discipline concerned with communication between the computers. It is defined as a subset of telecommunication involving the transmission of data to and from computers and components of computer systems. More specifically data communication is transmitted via mediums such as wires‚ coaxial cables‚ fiber optics‚ or radiated electromagnetic waves such as broadcast radio‚ infrared light‚ microwaves‚ and satellites. Data Communications =
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The remains of ancient plants can provide a wealth of archaeological information about a site‚ with many methods being available to the archaeologist engaged in extracting this data. Perhaps one of the most widely-known of these techniques‚ possibly because of its attractive nature‚ is pollen analysis - a technique developed in the early years of the twentieth century by‚ like so many archaeological techniques‚ a geologist -- the Norwegian Lennart van Post. To understand the technique and the uses
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The differences between data and information: a short analysis What is data? I have researched on the Internet and in books for the meaning and description of data and there are a variety of meanings and some are very misleading the best two meanings I found were “data consists of random (or a set of random) unprocessed facts with little or no intrinsic value”(S. Yull‚ T. Stump p-6) and “Data: the raw facts and figures a computer accepts as input and then processes to produce useful information”
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Web Data Mining: An Overview Updated December 16‚ 2004 Jeffrey W. Seifert Analyst in Information Science and Technology Policy Resources‚ Science‚ and Industry Division Congressional Research Service ˜ The Library of Congress Data Mining: An Overview Summary Data mining is emerging as one of the key features of many homeland security initiatives. Often used as a means for detecting fraud‚ assessing risk‚ and product retailing‚ data mining involves the use of data analysis tools to
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HATCO Data Set Description The HATCO data set gives data from a survey of customers of the HATCO company. The data set consists of 100 observations on 14 separate variables. Three types of information were collected. The first type of information is the perception of HATCO on seven attributes identified in past studies as the most influential in the choice of suppliers. The respondents‚ purchasing managers of firms buying from HATCO‚ rated HATCO on each attribute. Each of these 7 variables
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Module 5 Data Security What is a computer security risk? A computer security risk is any event or action that could cause loss of or damage to computer hardware‚ software‚ data‚ information‚ or processing capability. Some breaches to computer security are accidental‚ others are planned intrusions. Some intruders do no damage; they merely access data‚ information or programs on the computer before logging off. Other intruders indicate some evidence of their presence either by leaving a
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and cross talk on a cabling medium are factors that prevent the accuracy of transmitted data to be intact. For these reasons different encoding methods exist. An example is when 2 wires are used to transmit music data to a speaker Digital signals don’t always have to be carried over to the receiving end by electricity‚ light can also be used for digital communication. Fibre Optics use light to transmit data through optical fibre within the cable. The strength of the light ray can also be a determining
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Everyone of us knows that the big data has taken the IT world on the storm. However‚ what is the next to come? Will this technology also disappear with the time? Will big data technology continue to grow? What are the associated technologies going to take place around it? Will big data become old fashioned? What is the future of big data? Answer1‚ Stephenson: Although there is no technology that vanishes with the time. It can change the form but cant vanishes. Looking something similar to Quantum
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“Box Analysis” – Data Remnants on User Machines By TP030662 – Fahad Nasir Dalwai TP027308 – Ahmed Izhan TP023019 – Dhaavan Satchi UC3F1402 IT { ISS‚ FC } Module: CT017 - Data Recovery Supervised by Dr. ALI DEHGHANTANHA May 2014 Table of Contents List of Figures List of Tables ABSTRACT Cloud computing is a new computing paradigm that has attracted many computer users‚ business‚ and government agencies and can potentially store a large amount of data. Cloud
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Types of Data Integrity This section describes the rules that can be applied to table columns to enforce different types of data integrity. Null Rule A null rule is a rule defined on a single column that allows or disallows inserts or updates of rows containing a null (the absence of a value) in that column. Unique Column Values A unique value rule defined on a column (or set of columns) allows the insert or update of a row only if it contains a unique value in that column (or set of columns)
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