Population density
Explain the term population density.
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Population density is defined as the relation between number of individuals of population and area or volume they acquire. For example, in 2001 human population density of United States (in accordance with the World Bank) was 29,71 inhabitants per square kilometre and China had population density of the 135,41 humans per square kilometre.
Weak Preservation: An abstraction of a concrete system is weakly preserving if a set of properties true in the abstract system encompass corresponding properties in the concrete system which are also true.
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What is Message Authentication. Explain?
Semaphore: It is a software or hardware flag. In case of multitasking systems, a semaphore is a variable with a value which points out the status of a common resource. It is emp
Explain the requirements of information system life cycle?
Write an AWK program which takes the following input _le and processes it. $cat data.txt John Do 111-1111 English 90 Maths 80 Alice Do 222-2222 English 90 Maths 90 Chemistry 93 The input _le has _rst 3 _elds _xed as _rst name, last name, and student id. After the s
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