A known low complexity low roundoff noise limit cyclefree second-order state-space digital filter is here revisited. New design strategies to synthesize that filter are discussed, and the results of applying those strategies to some examples are shown. These results support the statement that it is possible to produce a better synthesis to that structure, in the sense of output roundoff noise r...

Microgravity dendritic growth experiments, conducted aboard the space shuttle Columbia, are described. In-situ video images reveal that pivalic acid dendrites growing in the diffusioncontrolled environment of low-earth orbit exhibit a range of transient or non-steady-state behaviors. The observed transient features of the growth process are being studied with the objective of understanding the ...

In a general model (AIMD) of transmission control protocol (TCP) used in internet traffic congestion management, the time dependent data flow vector x(t) > 0 undergoes a biased random walk on two distinct scales. The amount of data of each component xi(t) goes up to xi(t) + a with probability 1 − ζi(x) on a unit scale or down to γxi(t), 0 < γ < 1 with probability ζi(x) on a logarithmic scale, w...

We consider the problem of estimating the phase of squeezed vacuum states within a Bayesian framework. We derive bounds on the average Holevo variance for an arbitrary number N of uncorrelated copies. We find that it scales with the mean photon number n, as dictated by the Heisenberg limit, i.e., as n−2, only for N 4. For N 4 this fundamental scaling breaks down and it becomes n−N/2. Thus, a si...