Possible Glassiness in a Periodic Long-Range Josephson Array

Glassiness versus Order in Densely Frustrated Josephson Arrays

We carry out extensive Monte Carlo simulations of the Coulomb gas dual to the uniformly frustrated two-dimensional XY model, for a sequence of frustrations f converging to the irrational s3 2 p 5 dy2. We find in these systems a sharp first order equilibrium phase transition to an ordered vortex structure at a Tc which varies only slightly with f . This ordered vortex structure remains, in gener...

Long range magnetic interaction between Josephson junctions.

Josephson Junction Arrays with Long-Range Interactions

We calculate the current-voltage (IV ) characteristics of a Josephson junction array with long-range interactions. The array consists of two sets of equally-spaced parallel superconducting wires placed at right angles. A Josephson junction is formed at every point wherever the wires cross. We treat each such junction as an overdamped resistively-shunted junction, and each wire segment between t...

Long-range oscillation in a periodic DNA sequence motif may influence nucleosome array formation

We have experimentally examined the characteristics of nucleosome array formation in different regions of mouse liver chromatin, and have computationally analyzed the corresponding genomic DNA sequences. We have shown that the mouse adenosine deaminase (MADA) gene locus is packaged into an exceptionally regular nucleosome array with a shortened repeat, consistent with our computational predicti...

A New Design of Log-Periodic Dipole Array (LPDA) Antenna

This paper presents a new approach for design of the log-periodic dipole array antenna (LPDA) based on using of different design parameters in the LPDA elements to control the antenna behavior. In the proposed procedure, the design parameters can control the value of forward gain over the operating frequency range, and also adjust the gain flatness. Furthermore, this design procedure can decrea...