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The water authorities in England and Wales, which have now become water companies, recently had to provide anticipated costs for maintaining the water supply and sewerage systems over the next 20 years. Probabilistic models and statistical inference provide an opportunity to quantify the uncertainty in such exercises. Their use in a study undertaken by a water authority in the north-east of England is described and illustrated with interim data which were available at an early stage in the exercise.  相似文献   
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本文介绍了高校招生工作MIS总体设计思想,程序流程设计,系统主要功能及其主要特点:动态数据接口,全面数据分析,完备的条件查寻,字段组合动态统计,自由打印功能等。  相似文献   
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