PRINCIPLES OF DATA QUALITY Arthur D. Chapman1 Although most data gathering disciples treat error as an embarrassing issue to be expunged‚ the error inherent in [spatial] data deserves closer attention and public understanding …because error provides a critical component in judging fitness for use. (Chrisman 1991). Australian Biodiversity Information Services PO Box 7491‚ Toowoomba South‚ Qld‚ Australia email: papers.digit@gbif.org 1 © 2005‚ Global Biodiversity Information Facility Material
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Space-Time Block Coding for Wireless Communications Space-time coding is a technique that promises greatly improved performance in wireless communication systems by using multiple antennas at the transmitter and receiver. Space-Time Block Coding for Wireless Communications is an introduction to the theory of this technology. The authors develop the subject using a unified framework and cover a variety of topics ranging from information theory to performance analysis and state-of-the-art space-time
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|Case Study: Data for Sale | |Management Information System | | | |
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encrypt certain information to avoid suffering the penalties of going against the wishes of those who attempt to control. Still‚ the methods of data encryption and decryption are relatively straightforward‚ and easily mastered. I have been doing data encryption since my college days‚ when I used an encryption algorithm to store game programs and system information files on the university mini-computer‚ safe from ’prying eyes’. These were files that raised eyebrows amongst those who did not approve
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called as a star. Bus networks are the simplest way to connect multiple clients‚ but often have problems when two clients want to transmit at the same time on the same bus. The star topology is a computer network connected via cables to a central system called a hub or switch there are no direct connections between any of the computers‚ although multiple hubs or switches can be added to increase the number of computers that may be connected to the network. A bus topology is the minimum complex
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DATA SECURITY IN LOCAL NETWORK USING DISTRIBUTED FIREWALLS ABSTRACT Computers and Networking have become inseparable by now. A number of confidential transactions occur every second and today computers are used mostly for transmission rather than processing of data. So Network Security is needed to prevent hacking of data and to provide authenticated data transfer. Network Security
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Abstract: A qualitative analysis experiment was conducted to determine the identity of an unknown aldehyde or ketone. The tests include a Tollens test‚ a Schiff test‚ an iodoform test‚ and a derivative melting point test. The data of the first three tests was inconclusive. The final derivative melting point test was utilized to successfully determine that the unknown was the ketone‚ Propiophenone. Introduction: Qualitative analysis is a method or series of methods used to determine the
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DATA COLLECTION Business Statistics Math 122a DLSU-D Source: Elementary Statistics (Reyes‚ Saren) Methods of Data Collection 1. 2. 3. 4. 5. DIRECT or INTERVIEW METHOD INDIRECT or QUESTIONNAIRE METHOD REGISTRATION METHOD OBSERVATION METHOD EXPERIMENT METHOD DIRECT or INTERVIEW Use at least two (2) persons – an INTERVIEWER & an INTERVIEWEE/S – exchanging information. Gives us precise & consistent information because clarifications can be made. Questions not fully understood by the respondent
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Investment Appraisal – Qualitative Factors Investment appraisal provides a scientific decision-making technique for managers and can‚ if used appropriately‚ improve the quality of decisions. However‚ as financial data do not always show the full picture‚ firms should not base their decisions solely on investment appraisal results. Qualitative Factors • The aims of the organisation. A profit-making firm will focus on the results of a financial investment appraisal‚ with companies experiencing
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There are four research questions that is a logical extension of the purpose of the study. These four questions address the problem examined in the study and align with the study. The research questions aligned with the method identified for collecting data. The research questions are related to the central question. One of the questions ask (how)‚ whereas the other three questions indicated (what). The research questions focus on different aspects of dating violence. The exploratory verbs are implied
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