CMM用于提高整个软件组织的能力成熟度，PSP和TSP分别用于改进软件工程师个人的工作风格和提高小组的软件开发质量和效率。
CMM is used to improve capability maturity of software organizations. PSP and TSP will improve software engineers' work style, productivity of team and quality of software.
研究表明：放权的跨部门的小组所取得的质量改进成果可以达到部门内的小组所取得成果的200%到600%。
Research shows that: the power of cross-sectional group achieved by a quality improvement results can be achieved within the Department, group of the results obtained from 200% to 600%.
质量管理小组活动作为一种质量改进方法，自1978年引进我国后，现已在各行各业发挥了巨大的作用。
As a kind of quality improvement method introduced into China since 1978, QC group activity is playing significant function in all trades and professions.
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