We measure the statistical distribution of the local density of optical states (LDOS) on disordered semicontinuous metal films. We show that LDOS fluctuations exhibit a maximum in a regime where fractal clusters dominate the film surface. These large fluctuations are a signature of surface-plasmon localization on the nanometer scale.

Many children fail to master fraction arithmetic even after years of instruction, a failure that hinders their learning of more advanced mathematics as well as their occupational success. To test hypotheses about why children have so many difficulties in this area, we created a computational model of fraction arithmetic learning and presented it with the problems from a widely used textbook ser...

Because the time to respond to a stimulus depend markedly on expectation, measurements of reaction time can, conversely, provide information about the brain's estimate of the probability of a stimulus. Previous studies have shown that the quantitative relationship between reaction time and static, long-term expectation or prior probability can be explained economically by the LATER model of dec...

Inositol polyphosphate-5-phosphatase (INPP5D) was reported to be associated with Alzheimer's disease (AD) through modulating the inflammatory process and immune response. A recent genome-wide association study discovered a new locus single nucleotide polymorphism (SNP, rs35349669) of INPP5D which was significantly associated with susceptibility to late-onset Alzheimer's disease (LOAD) in Caucas...

Cvetković et al. [Appl. Math. Comput. 217 (2010), 2468–2480] presented an algorithm for dynamic load balancing in discrete load model based on the eigenvectors of the adjacency matrix of the processor network. In case of integral graphs, whose eigenvalues are integers and whose eigenvector basis may be chosen to consist of integers only, this algorithm executes in integer arithmetic, providing ...

We present an after-action report for a large-scale damage assessment project that followed Hurricane Sandy's landfall on the Eastern seaboard of the USA in 2012. The Civil Air Patrol (CAP) took over 35,000 GPS-tagged images of damage-affected areas, as part of their mandate to provide aerial photographs for disaster assessment and response agencies, primarily FEMA, who used the aggregate geolo...

This masonry research investigated the differences in the static and dynamic stiffness for the seismic range of loads and frequencies for a pressed clay masonry wythe. The effective stiffness has been defined in Newtonian physics and Damage Mechanics. This research used the concept of measured stiffness defined as the measured stress field divided by the measured strain field. A two-part test r...

A Universal Failure Model (UFM) is proposed for complex systems that rely on large number of entities for performing a common function. Economy of scale or other considerations may dictate the need to pool resources for the common purpose, but the resulting strong coupling precludes the grouping of those components into modules. Existing system-level failure models rely on modularity for reduci...

Implementing a parallel molecular dynamics as a parallel application presents some unique load balancing challenges. Non-uniform distribution of atoms in space, along with the need to avoid symmetric redundant computations, produces a highly irregular computational load. Scalability and eeciency considerations produce further irregularity. Also, as the simulation evolves, the movement of atoms ...