Viewpoint 4

λ Φ 4 Theory from a particle - gas viewpoint

We discuss the physics of the 3 + 1 dimensional λΦ4 quantum field theory in terms of the statistical mechanics of a gas of particles (‘atoms’) that interact via a −1/r3-plushard-core potential. The hard-core potential, δ(3)(r), arises from the bare vertex diagram, while the attractive, long-range −1/r3 potential is due to exchange of a particle pair via the t, u-channel “fish” diagram. (Higher-...

The Level 4 Software Process from the Assessor ’ s Viewpoint

for an invited paper at the December, 1996 Conference of the International Software Consulting Network Brighton, U.K. From the time the Capability Maturity Model (CMM) was developed (late ‘80s, early ‘90s), it was a matter of speculation whether software organizations existed or would be assessed at the higher maturity levels, levels 4 and 5. In the last two years, a few organizations with proc...

Viewpoint Selection using Viewpoint Entropy

Computation of good viewpoints is important in several fields: computational geometry, visual servoing, robot motion, graph drawing, etc. In addition, selection of good views is rapidly becoming a key issue in computer graphics due to the new techniques of Image Based Rendering. Although there is no consensus about what a good view means in Computer Graphics, the quality of a viewpoint is intui...

Personal Viewpoint

Viewpoint Modeling *

If architecture representation is the problem (P), and the UML is the solution (S), how do we get from P to S? In this paper, I introduce the idea of viewpoint modeling as a part of the answer. A viewpoint, as defined in IEEE 1471, defines a set of architectural concerns and the resources needed to address those concerns. A viewpoint gives an architect the resources with which to construct an a...