Large deformations that accompany longwall mining result in complex spatial and temporal distributions of changes in undrained pore ̄uid pressures around the advancing face. These seemingly anomalous changes are recorded in the rapid water level response of undermined and adjacent wells, and may be explained in the short-term as a undrained poroelastic e€ect. A three-dimensional ®nite element mo...

Theoretical aspects of multicomponent superconductivity and systems with competing interactions are studied using Monte Carlo techniques. Motivated by recent experimental and theoretical results of complex structure formation of vortices in multicomponent systems, possible vortex structure formations due to vortex interactions that are not purely attractive or repulsive are considered. Vortex s...

| Since manufacturing processes inherently uctuate, LSI chips which are produced from the same design have di erent propagation delays. However, the di erence in delays caused by the the process uctuation has rarely been considered in most high-level synthesis systems which were developed before. This paper presents a new approach to module selection in high-level synthesis, which exploits di e...

Turbulence in tokamaks is characterized by long parallel wavelengths and short perpendicular wavelengths. A coordinate system for nonlinear uid, gyrokinetic \Vlasov," or particle simulations is presented that exploits the elongated nature of the turbulence by resolving the minimum necessary simulation volume: a long thin twisting ux tube. It is very similar to the ballooning representation, alt...

Code Division Multiple Access Communications Sang Wu Kim1 and Andrea Goldsmith Dept. of Electrical Engineering California Institute of Technology Pasadena, CA 91125 Abstract We analyze the performance of the truncated power control scheme in code division multiple access communication systems, which compensates for fading above a certain cuto fade depth. We investigate the power gain as well as...

Carrying IP tra c over connection-oriented networks requires the use of bandwidth on demand schemes at gateways or network interfaces. A new virtual queue occupancy, which is more accurate than the classical one, is being proposed for IP/SONET bandwidth on demand. Based on the virtual queue occupancy, two enhanced periodic approaches for lossless services, LAVQ and LAVQL, are simulated and eval...

Nearly two years of 2-min resolution data and 7to 21-s resolution data from the CUTLASS Finland HF radar have undergone Fourier analysis in order to study statistically the occurrence rates and repetition frequencies of pulsed ionospheric ̄ows in the noon-sector high-latitude ionosphere. Pulsed ionospheric ̄ow bursts are believed to be the ionospheric footprint of newly reconnected geomagnetic ...