In this paper, the performance of point light source parameter estimation from two video images is analyzed in terms of estimation theory. The illumination parameters are the intensity and direction of a single distant point light source in presence of ambient light. Known illumination estimation methods evaluate temporal changing shading on the surface of rotating objects in two video images. ...

We study diffusive lattice gases with local injection of particles, namely we assume that whenever the origin becomes empty, a new particle is immediately injected into the origin. We consider two lattice gases: a symmetric simple exclusion process and random walkers. The interplay between the injection events and the positions of the particles already present implies an effective collective in...

The notion of magnitude limits is formalized as a compromise between incompleteness and spurious detections. The best possible detection performance for given signal-to-noise is then computed for diierent point spread functions and pixel sizes. The resulting theoretical magnitude limits are much shallower than simple 3 arguments would predict (and the reason for this is explained), but are (as ...

The correlations between passive smoking and benzene are very weak. This weakness is further demonstrated in another EPA report (7) that shows when the New Jersey and the California data for matched indoor and outdoor samples are regressed, only the first group of data for Los Angeles (LAI) show a significant correlation with the presence of a smoker in the home, and then only with p = 0.1 (pro...

What is the stability of recovering the location of xj . Suppose the number of point sources is known as m. Or we formulate the stability argument as following statement. Statement 1.1 If ul for l = 1, 2 be the solutions of equation 1 associated with Cauchy data (f , g) and sources F l = ∑m j=1 P l jδ(x − xj), if we have ‖(f, g) − (f, g)‖ ≤ , can we find a permutation π of {1, 2, . . . ,m} such...

Scientists have begun using self-replicating rapid prototyper (RepRap) 3-D printers to manufacture open source digital designs of scientific equipment. This approach is refined here to develop a novel instrument capable of performing automated large-area four-point probe measurements. The designs for conversion of a RepRap 3-D printer to a 2-D open source four-point probe (OS4PP) measurement de...

A source-seeking process for a pair of simple, low capability robots using only point measurements is proposed and analyzed. The robots are assumed to bememoryless, to lack the capability of performing complex computations and to have no direct communication abilities. Their only implicit formof communication is by sensing their relative position and the only response of a robot to the point me...

This paper presents an incentive scheme to control agricultural non-point-source pollution. The analysis is based on a nested agent framework with three parties; farmers, a country’s government, and the governments of all countries that affect each other’s environmental quality. Unlike previous analysis of incentive schemes to control agricultural pollution, we suggest non-individual contracts ...

A mathematical framework is presented for use in the experimental determination of the polarimetric response of observatory instrumentation. Elementary principles of linear algebra are applied to model the full matrix description of the polarization measurement equation by least-squares estimation of non-linear, scalar parameters. The formalism is applied to calibrate the center element of the ...