Computer Encyclopedia of Physical Science and Technology, by Robert A Meyers PDF

By Robert A Meyers

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Com). 12:13 581 Bontchev, V. (199). com/other papers/Trends). Computer Emergency Response Team (CERT). org). org). European Institute for Computer Anti-Virus Research (http://www. com). Kephart, J. , Sorkin, G. , Chess, D. , and White, S. R. (199). “Fighting Computer Viruses,” Sci. html). Leiss, E. L. (1990). “Software Under Siege: Viruses and Worms,” Elsevier, Oxford, UK. Polk, W. , and Bassham, L. E. (1994). “A Guide to the Selection of Anti-Virus Tools and Techniques,” Natl. Inst. gov/nistpubs/ select).

The first four operations, the constructors, are used to create new complex numbers. The first creates a Complex object that is initialized to zero, the second creates a Complex from a single number (the real part), the third creates a Complex from a pair of numbers (the real and imaginary parts), and the fourth creates a new Complex object from an existing Complex object. In the class declaration shown above, the four construction operations are described but not defined. Here is the definition of the second constructor (the others are similar, hence not shown).

The computer can then sequence through these instructions at its own speed. Since the instructions are entered only once (rather than 20 times), we get almost a 20 fold speed up in the computation. If the balance for 1000 months is re- quired, the speedup is by a factor of almost 1000. We have achieved this speedup without making our computing device any faster. We have simply cut down on the input work required by the slow human! A different approach would have been to write program for the algorithm.

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