channel. Each signal is assigned a different frequency (subchannel) within the main channel. * Useful bandwidth of medium exceeds required bandwidth of channel * e.g. broadcast radio and cable television * Channel allocated even if no data Frequency Division Multiplexing Diagram * Each signal is modulated to a different carrier frequency * Carrier frequencies separated by guard bands (unused bandwidth) – to prevent interference so signals do not overlap. 3 FDM System FDM
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briefly explain the quantitative data collection. Data collection is often costliest and the most time consuming portion of study.Quantitative research is an approach for testing objective theories by examining the relationship among variables.The data collection method in quantitative research is in structured manner which involves decent planning of data collection. The planning of data collection process involves certain steps as follows: Identification of data needs. Selecting types
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Data warehousing and current trends Submitted to: Mr. S. Ramanathan TABLE OF CONTENTS 1. Executive Summary 2. Data warehousing basics‚ difference from database and its business implication 3. Data mining‚ businesses using it and how 4. ETL technology‚ businesses using it and how 5. Tools used 6. Data mart and difference in business implication 7. References EXECUTIVE SUMMARY This study takes an insight into the usage of data warehousing and data mining
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Introduction Data management within Human Resources (HR) is essential as this can be used when organisations have to make decisions‚ contact employees and also satisfy legal requirements. Aims and Objectives The aim of this report is to show the importance of why organisations must collect HR data. The objectives are: * To identify two types of data organisations must collect and how this supports HR * To describe two methods of storing HR records and the benefits of each * To explain two
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Fig: Architecture of data warehouse Operations Conceiving data as a cube with hierarchical dimensions leads to conceptually straightforward operations to facilitate analysis. Aligning the data content with a familiar visualization enhances analyst learning and productivity.[5] The user-initiated process of navigating by calling for page displays interactively‚ through the specification of slices via rotations and drill down/up is sometimes called "slice and dice". Common operations
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Activity 1 Report on Data Management Contents Page Title Page(s) Introduction 4 Why Collect HR Data 4 Types of HR Data and how it supports HR 4 Data Storage and its Benefits 5 Essential UK legislations relating to recording‚ storing and accessing HR data 5-6 Conclusion 6 Reference List 7 Introduction HR data would need to be stored by all organisations due to either legal requirements or internal purposes. This report will uncover
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Com EENG 33151 – DATA COMMUNICATION AND COMPUTER NETWORKS ASSIGNMENT 1 (CO1‚ CO2 : PO1‚PO3) Note: • Submission Date: On or before but not after 12-10-2012 • Refer “Data Communications and Networking” 4th edition‚ Behrouz A. Forouzan • No Plagiarism • Kindly use A4 sheets 1. For n devices in a network‚ what is the number of cable links required for a mesh‚ ring‚ bus‚ and star topology? 2. Assume five devices are arranged in a mesh topology
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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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4.1 - MediaTech Direct Works To Remove Data Errors 1. How important are accurate data for online businesses? Accuracy of data is very critical when it comes to any organization as it could be more difficult to manage data when jeopardized. The requisite to acquiring strong information is that any data has to be of great quality. There are some characteristics that guide a useful data and these include the accuracy of the data‚ how complete it is‚ how accessible it is‚ how consistent it is‚ its
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Data Mining Project on IMDB website ABSTRACT The Internet Movie Database (IMDb) is an online database of information related to movies‚ television shows‚ stars‚ etc. We chose to do our project from 2008 to 2011 year’s movie database. We extracted data like Movie‚ Director‚ Star‚ Image Url‚ Studio from the IMDb website. For this extraction of data we used a tool named Mozenda. After the data extraction‚ the data was analyzed. For a particular star‚ his/her movie‚ director‚ studio with whom the
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