Moiré metrology of energy landscapes in van der Waals heterostructures.

The emerging field of twistronics, which harnesses the twist angle between two-dimensional materials, represents a promising route for the design of quantum materials, as the twist-angle-induced superlattices offer means to control topology and strong correlations. At the small twist limit, and particularly under strain, as atomic relaxation prevails, the emergent moiré superlattice encodes elusive insights into the local interlayer interaction. Here we introduce moiré metrology as a combined experiment-theory framework to probe the stacking energy landscape of bilayer structures at the 0.

Particle Filter with State Permutations for Solving Image Jigsaw Puzzles.

We deal with an image jigsaw puzzle problem, which is defined as reconstructing an image from a set of square and non-overlapping image patches. It is known that a general instance of this problem is NP-complete, and it is also challenging for humans, since in the considered setting the original image is not given. Recently a graphical model has been proposed to solve this and related problems.

Research note: revisiting the classification of household composition among elderly people.

The note updates comments written a decade and a half ago on our need for a standard schemata for comparing the living arrangements of elderly people around the world. Perforce limiting our view to populations living in private households, the note considers different schema beginning with an examination of household size and head/nonhead data and proceeding to schemes using ever more detailed data on 'relation to household head' information and data on marital status. The best scheme will of course depend on the data available and on the study's theoretical ideas, but if the ideas have to do with the nature of the family then it would seem that one is best off using a combination of information on people's relation to the household head and information on marital status to indicate family household composition.

A potential role for phenylalanine hydroxylase in mosquito immune responses.

In mosquitoes the melanotic encapsulation immune response is an important resistance mechanism against filarial worms and malaria parasites. The rate limiting substrate for melanin production is tyrosine that is hydroxylated by phenoloxidase (PO) to produce 3, 4-dihydroxyphenylalanine. The single pathway for endogenous production of tyrosine is by hydroxylation of phenylalanine by phenylalanine hydroxylase (PAH).