28法则英语PPT

business
Pareto Pareto principle principle
wenku.baidu.comeconomics
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software health
In business
The distribution is claimed to appear in several different aspects relevant to entrepreneurs and business managers. For example: 80% of a company's profits come from 20% of its customers 80% of a company's complaints come from 20% of its customers 80% of a company's profits come from 20% of the time its staff spend 80% of a company's sales come from 20% of its products 80% of a company's sales are made by 20% of its sales staff
In economics
A chart that gave the inequality a very visible and comprehensible form, the socalled 'champagne glass' effect, was contained in the 1992 United Nations Development Program Report, which showed the distribution of global income to be very uneven, with the richest 20% of the world's population controlling 82.7% of the world's income.
That is The
Pareto principle .
The 80/20 Rule means that in any set of things (workers, customers, etc.) a few (20 percent) are vital and many (80 percent) are considered trivial. In Juran's initial work, he identified 20 percent of product defects causing 80 percent of product problems. It’s well known by Project Managers that 20 percent of work (usually the first 10 percent and the last 10 percent) consume 80 percent of the time and resources. You can apply the 80/20 Rule to almost anything, from the science of management to the sciences of the physical world around us
In the late 1800s, Vilfredo Pareto, an economist, established that 80% of the land in Italy was owned by 20% of the population. This was the first instantiation of a socio-economic law that soon appeared to have universal scope.
Occupational health and safety
The Pareto principle is used in occupational health and safety to underline the importance of hazard prioritization. Assuming 20% of the hazards will account for 80% of the injuries and by categorizing hazards, safety professionals can target those 20% of the hazards that cause 80% of the injuries or accidents. Alternatively, if hazards are addressed in random order, then a safety professional is more likely to fix one of the 80% of hazards which account for some fraction of the remaining 20% of injuries.
In software
In computer science and engineering control theory such as for electromechanical energy converters, the Pareto principle can be applied to optimizatio efforts.For example, Microsoft noted that by fixing the top 20% most reported bugs, 80% of the errors and crashes would be eliminated.