On a regular spring time a lot of tulip flower fields outside the Keukenhof are headed (taking the flower off) on the 30th of April or within a couple of days after it. If you want to see the flower fields as well make sure that you visit before this date!
In factorial designs, a factor is a major independent variable. In this example we have two factors: time in instruction and setting. A level is a subdivision of a factor. In this example, time in instruction has two levels and setting has two levels. Sometimes we depict a factorial design with a numbering notation.
Withoutquality targets to guide the architects and engineers, design choices are arbitrary, and it is hard to assess thesystem during architecture and design reviews and system test.In this paper we explore what non-functional requirements are and how to define them as part of therequirements process.