1. References

2. Further reading

In engineering design, a function–means tree (a.k.a. function/means tree or F/M tree) is a method for functional decomposition and concept generation. At the top level, main functions are identified. Under each function, a means (or solution element) is attached. Alternative solution elements can also be attached. Each means is in turn decomposed into functions with means attached to each of them. A well-elaborated function means tree span, a design space where all concepts under consideration are represented. Requirements can be attached to functions.{{Citation needed|date=January 2008}}

In addition to product level requirements, there might be requirements on sub functions that may be a consequence of means at a higher level. The function means tree is a tool that can aid in the creative part of the design process. It can also be a tool for mapping requirements to parts in a design. This requires that there be also a mapping between means and parts in the product architecture.{{Citation needed|date=January 2008}}

References

Further reading

• {{cite book|title=Constraint-Aided Conceptual Design|author=Barry O'Sullivan|pages=11|year=2002|publisher=John Wiley and Sons|isbn= 1-86058-335-0}}
• {{cite book|title=Engineering Design Synthesis: Understanding, Approaches, and Tools|editor=Amaresh Chakrabarti|chapter=Two approaches to synthesis based on the domain theory|author=Claus Thorp Hansen and Mogens Myrup Andreasen|pages=99|year=2002|publisher=Springer|isbn=1-85233-492-4}}

• The Glass Ballerina
• The Glass Ballerina (Lost)
• The Glass Books of the Dream Eaters
• The Glass Bottle
• The Glass Cafe
• The glass ceiling
• The Glass Cell (film)
• The Glass Coffin
• The Glasses
• The Glasses (Seinfeld episode)
• The Glass Hammer
• The Glass House
• The Glass House (2001 film)
• The Glass House 2: The Good Mother
• The Glass House (arena)
• The Glass House (novel)
• The Glass House: The Good Mother
• The Glass Inferno
• The Glass Intact
• The Glass is Always Cleaner (Las Vegas episode)
• The Glass Is Always Cleaner (Las Vegas (TV series))
• The Glass Jungle
• The Glass Key (1935 film)
• The Glass Key (1942 film)
• The Glass Key Award