Fluid mixing usually involves the interplay between advection and diffusion, which together cause any initial distribution of passive scalar to homogenize ultimately reach a uniform state. However, this scenario only holds when velocity field is nondivergent has no normal component boundary. If either condition unmet, such as for active particles in bounded region, floating particles, or filter...

This thesis examines the effects of electromagnetic interference (EMI) and coupling in circuits and systems. The coupling phenomenon is investigated in nonuniform transmission lines and adjacent via structures in microelectronic circuits. Radiation from metallic enclosures with apertures and lined with resistive materials is analyzed. Electromagnetic interference on a larger scale is studied in...

The latency insertion method (LIM) is a transient simulation technique for circuits and is based on a finite-difference formulation, like the well-known finite-difference time-domain (FDTD) method for solving Maxwells equations. The LIM, like the FDTD method, is only conditionally stable resulting in an upper bound for the time step of the transient simulation. This bound on the time step is a ...

abdominal wall hernias are the most common situations requiring major surgeries. in this study, we report a large incisional hernia, as an incidental finding, in a tc-dtpa scan of a renal transplant recepient. increased flow of activity in dynamic phase and relatively increased and nonuniform tracer accumulation in static phase of the study were observed.

Block orthogonal transforms (BOT's) are commonly used for lots of applications. Conventional BOT's are based on uniform lter banks, however, nonuniform BOT's are often superior to uniform ones. In this research, we investigate the factorization of nonuniform BOT's which does not involve the tree structure. Therefore, optimal nonuniform BOT's are available in the sense of transform coding gain. ...

Spatial moisture distribution in natural soil or other material is a valuably information for many applications. Standard measurement techniques give only mean or punctual results. Therefore a new inversion algorithm has been developed to derive moisture profiles along single TDR sensor-probes. The algorithm uses the full information content of TDR reflection data measured from one or both side...

Automatic container-code recognition is of great importance to the modern container management system. Similar techniques have been proposed for vehicle license plate recognition in past decades. Compared with license plate recognition, automatic container-code recognition faces more challenges due to the severity of nonuniform illumination and invalidation of color information. In this paper, ...

In this study, analytical solution is presented to calculate the free vibration frequencies of nonuniform microbeams. Scale effects are modelled using modified couple stress theory and the microbeam is assumed to be thin while Poisson's ratio effects are also taken into account. Nonuniformity is presented by exponentially varying width among the microbeam while the thickness remains constant. R...