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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classic example of all such social tragedies based on fear and ignorance is that of the colonial era ’s Salem Witch Trials. While Mc Carthyism was illustrated as a widespread fear of communism that led the United States to pursue unnecessary investigations‚ imprisonments‚ and often unprovoked acts against those who were often only remotely accused of being a "dreaded communist"‚ the Salem witch trials led to well over a dozen executions of local women accused of practicing witchcraft and directly
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What Caused the Salem Witch Trial Hysteria of 1692? The year 1692 marked a major event in history in the town of Salem‚ Massachusetts. During the year 1692‚ Salem‚ a colony filled with Puritans who believe in religion very strongly‚ but as their beliefs grow‚ the more the people were starting to die. The problem or question is what caused the Salem witch crisis hysteria of 1692? There were many causes for the Salem witch trial hysteria but the possible three main reasons were the conflicts between
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Data Analysis‚ Presentation & Interpretation Prof. Dr. Md. Nazrul Islam Ph.D 1 Data Analysis Plan The appropriate methods of data analysis are determined by your data types and variables of interest‚ the actual distribution of the variables‚ and the number of cases. 2 Data Management 3 Why prepare a plan for processing and analysis of data? All information has been collected in a standardized way Not collected unnecessary data which will never be analyzed A statistical analysis plan should
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conspiracy of witchcraft. Many fell victim in this case of religious extremism. How did this horrible event begin? What fueled the unfounded fear of witchcraft? What are specific cases of this affair? Is there earlier record of similar occurrences The Salem witch trials were a progression of hearings and arraignments of individuals blamed for witchcraft in colonial Massachusetts between February 1692 and May 1693. The trial brought about the detainment of 141 individuals and twenty executions. Of those
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The Salem Witch Trials of 1692 were a dark time in American history. More than 200 people were accused of practicing witchcraft and 20 were killed during the hysteria. Ever since those dark days ended‚ the trials have become synonymous with mass hysteria and scapegoating. Causes Salem‚ Massachusetts was not alone in its witch hunt. A wave of witch trials swept Europe from the 1300s to the 1600s. These witch hunts happened for a variety of reasons and were greatly influenced by the fear
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Troy Wilson* suggest a way for preserving and enhancing the value of exploration data E very year explorationists‚ industrywide‚ collect billions of dollars worth of data. Yet‚ when it comes time for geologists to extract value from their information‚ they often find that value has been lost through poor practices in data management. There is no reliable record of the data that has been collected or data is not where it should be - it has been misplaced or corrupted. Re-assembling information
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Components of DSS (Decision Support System) Data Store – The DSS Database Data Extraction and Filtering End-User Query Tool End User Presentation Tools Operational Stored in Normalized Relational Database Support transactions that represent daily operations (Not Query Friendly) Differences with DSS 3 Main Differences Time Span Granularity Dimensionality Operational DSS Time span Real time Historic Current transaction Short time frame Long time frame Specific Data facts Patterns Granularity Specific
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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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DATA COMMUNICATION (Basics of data communication‚ OSI layers.) K.K.DHUPAR SDE (NP-II) ALTTC ALTTC/NP/KKD/Data Communication 1 Data Communications History • 1838: Samuel Morse & Alfred Veil Invent Morse Code Telegraph System • 1876: Alexander Graham Bell invented Telephone • 1910:Howard Krum developed Start/Stop Synchronisation ALTTC/NP/KKD/Data Communication 2 History of Computing • 1930: Development of ASCII Transmission Code • 1945: Allied Governments develop the First Large Computer
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