Dust particle injector for hypervelocity accelerators Patent

Method and apparatus for use in forming highly collimated beam of microparticles with high charge to mass ratio and injecting beam into electrostatic accelerating tub

I Skate Therefore I Am: Athletic Identity Amongst Collegiate Level Hockey Players

This study explores athletic identity among men’s, women’s and sled hockey athletes and whether or not there is significant differences between the groups. An exploratory study was done that consisted of a quantitative survey that utilized the Athletic Identity Measurement Scale, better known as the AIMS, in order to look in to the three types of athlete’s identity (Brewer, Van Raalte, & Linder, 1993). A snowball sample was used to garner participants from men’s, women’s and sled hockey teams from a moderately sized New England College, for the survey. There were 7 responses from each team, a total of 21 athletes participating. The aforementioned AIMS, was used to determine if there was significant difference with how the three types of athletes identified. The researchers found that there was significant difference in three areas: 1) athlete has many goals related to hockey 2) others seeing them as an athlete, and 3) the importance of others seeing them as an athlete. There was near significance in the AIMS Sum

Experimental studies of nucleation and growth processes related to the formation of presolar grains

An understanding was sought for the mechanisms of nucleation of refractory materials, and the relative importance of factors controlling the rate of cluster formation and growth for astrophysically important species. The structure and composition of the condensates is being studied, with the goal of characterizing the grains present in the primitive solar nebula

Microparticle impact sensor measures energy directly

Construction of a capacitor sensor consisting of a dielectric layer between two conductive surface layers and connected across a potential source through a sensing resistor permits measurement of energy of impinging particles without degradation of sensitivity. A measurable response is produced without penetration of the dielectric layer

Configuration Space for Random Walk Dynamics

Applied to statistical physics models, the random cost algorithm enforces a Random Walk (RW) in energy (or possibly other thermodynamic quantities). The dynamics of this procedure is distinct from fixed weight updates. The probability for a configuration to be sampled depends on a number of unusual quantities, which are explained in this paper. This has been overlooked in recent literature, where the method is advertised for the calculation of canonical expectation values. We illustrate these points for the $2d$ Ising model. In addition, we proof a previously conjectured equation which relates microcanonical expectation values to the spectral density.Comment: Various minor changes, appendix added, Fig. 2 droppe

Non-Perturbative U(1) Gauge Theory at Finite Temperature

For compact U(1) lattice gauge theory (LGT) we have performed a finite size scaling analysis on $N_{\tau} N_s^3$ lattices for $N_{\tau}$ fixed by extrapolating spatial volumes of size $N_s\le 18$ to $N_s\to\infty$. Within the numerical accuracy of the thus obtained fits we find for $N_{\tau}=4$, 5 and~6 second order critical exponents, which exhibit no obvious $N_{\tau}$ dependence. The exponents are consistent with 3d Gaussian values, but not with either first order transitions or the universality class of the 3d XY model. As the 3d Gaussian fixed point is known to be unstable, the scenario of a yet unidentified non-trivial fixed point close to the 3d Gaussian emerges as one of the possible explanations.Comment: Extended version after referee reports. 6 pages, 6 figure

Small eigenvalues of large Hankel matrices:The indeterminate case

In this paper we characterise the indeterminate case by the eigenvalues of the Hankel matrices being bounded below by a strictly positive constant. An explicit lower bound is given in terms of the orthonormal polynomials and we find expresions for this lower bound in a number of indeterminate moment problems.Comment: 14 pages, 1 figur