Agarwal

Noise pollution affects human beings at threelevels: auditory effects, non-auditory effects and physiological effects. Noisepollution control avenues include insulation of noise source, isolation of noisesource, personal isolation, volume reduction, legal protection, ekistics andpolitical will. Many countries have adopted ambient noise pollution standards.This book all important aspects of this subject in detail.

Noise Pollution

Wilson

Chwo

Proceedings of the International Conference on Numerical Mathematics held at the National University of Singapore, May 31–June 4, 1988

Numerical Mathematics Singapore 1988

As we continue to build faster and fast. er computers, their performance is be coming increasingly dependent on the memory hierarchy. Both the clock speed of the machine and its throughput per clock depend heavily on the memory hierarchy. The time to complet. e a cache acce88 is oft. en the factor that det. er mines the cycle time. The effectiveness of the hierarchy in keeping the average cost of a reference down has a major impact on how close the sustained per formance is to the peak performance. Small changes in the performance of the memory hierarchy cause large changes in overall system performance. The strong growth of ruse machines, whose performance is more tightly coupled to the memory hierarchy, has created increasing demand for high performance memory systems. This trend is likely to accelerate: the improvements in main memory performance will be small compared to the improvements in processor performance. This difference will lead to an increasing gap between prOCe880r cycle time and main memory acce. time. This gap must be closed by improving the memory hierarchy. Computer architects have attacked this gap by designing machines with cache sizes an order of magnitude larger than those appearing five years ago. Microproce880r-based RISe systems now have caches that rival the size of those in mainframes and supercomputers.

Agarwal

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