Quality and Productivity of Software?

There are many factors in quality of software, it is difficult to consider all factor.  Factors of quality contain Reliability, Economy, Satisfaction, Easy of Use, Safety, Functionality but developer usually tends to concentrate in fuctionality.  Factors of quality are center of user, not developer.  Safety,Satisfaction, Functionality and Easy of Use are related user.
Software is impossible [...]

For improvement in quality and productivity…

There is difficult to get both improvement in quality and improvement in productivity on development of software.  If you do test for improvement in quality and reliability, productivity can be down.  So if you develop quickly software for improvement in productivity , quality can be down relatively.  I will study and share information to get [...]