In development, regulated and quality assurance laboratories, the Spiral Model
can be particularly helpful, as it does provide a bit more structure.
Boehm himself warned of "hazardously distinct" spiral model
imitations, and in his own words described his vision of the spiral process:
The Spiral model
has elements of both the waterfall model and the prototyping model, generally for large projects.
Polivy and colleagues (1988) tested the spiral model
by examining the relationship between self-esteem and dietary disinhibition.
Sorted into chronological order by topic, Boehm's articles reflect the wide range of his research across his diverse career and include software architecture and quality, software economics, software tools, the early spiral model
of software process, software risk management, emerging extensions in software process, software and systems management, the state of the art and practice of software engineering.
This MicroFlow spiral model
is available with single, double and triple extrusion capabilities.
The purpose of the spiral model
to introduce NSPS was to build a little, test a little, and learn a lot, Lacey said.
L T Cohen describes a 2D spiral model
that was originally designed to model the path of the implant electrode itself (40) (and not of the otic capsule, the bone that encapsulates the cochlea).
This significantly simplifies aspect implementation using connecting points, and the generative application development becomes more flexible, which allows for easier use of the Boehm spiral model
of software development (Boehm, 1988) (Fig.
While the spiral model
is adaptive and agile, it mandates commitment and special management skills.
R&D must blend the software industry spiral model
with the traditional Stage-Gate model to reap the benefit of many synchronous and overlapping development process elements.
Another spiral model
, the Junior, is manufactured for lower QFF line runs.