Investing in Diamonds

Increasing Diamonds

A class of diamond-shaped combinatorial structures is studied whose enumerating generating functions satisfy differential equations of the form f2 “ Gpfq, for some function G. In addition to their own interests and being natural extensions of increasing trees, the study of such DAG-structures was motivated by modelling executions of seriesparallel concurrent processes; they may also be used in ...

Rendering Diamonds

Fascinating colors of diamonds are generated by a combination of mechanisms including Fresnel reflection, volume absorption and light dispersion. This paper proposes an approach to unify these mechanisms to synthesize realistic computer images of diamonds. Our work is based on a composite spectral model that accounts separately for smooth components and spikes in spectra. While sufficiently han...

Investing in our Children

Investing in Software Sustainment

In many government weapon systems, sustaining software depends heavily on organic engineering efforts. This is different from hardware sustainment (the more traditional form of sustainment), which often depends heavily on the supply chain and service providers and much less on engineering capability. Because of this shift, a larger portion of sustainment funding needs to be allocated to improvi...

Investing in health.