PURPOSE To investigate epithelial thickness-distribution characteristics in a large group of keratoconic patients and their correlation to normal eyes employing anterior-segment optical coherence tomography (AS-OCT). MATERIALS AND METHODS The study group (n=160 eyes) consisted of clinically diagnosed keratoconus eyes; the control group (n=160) consisted of nonkeratoconic eyes. Three separate,...

The importance of machining process in today’s industry requires the establishment of more practical approaches to clearly represent the intimate and severe contact on the tool-chipworkpiece interfaces. Mathematical models are developed using the measured force signals to relate each of the tool-chip friction components on the rake face to the operating cutting parameters in rough turning opera...

Digital microfluidic systems (DMFS) are a class of lab-on-a-chip systems that manipulate individual droplets of chemicals on an array of electrodes. The biochemical analyses are performed by repeatedly moving, mixing, and splitting droplets on the electrodes. In this paper, we characterize the tree structure of biochemical analyses and identify their minimum resource requirements, towards the d...

Most microprocessors use large on-chip SRAM caches to bridge the performance gap between the processor and the main memory. Due to their growing embedded applications coupled with the technology scaling challenges, considerable attention is given to the design of low-power and high-performance SRAMs. However, there are many challenges in the design of both embedded and stand-alone SRAMs, such a...

Materials such as waste tire chips were widely used to improve the strength of soil. The objective of this study is to discuss the residual strength or steady-state behavior of sand-waste tire chip mixtures. A series of undrained monotonic triaxial compression tests were conducted on reconstituted saturated specimens of sand and sand-tire chip mixtures with variation in the tire-chip contents f...

Project Goal: Due to the constraints of VLSI scaling, future processor and system-on-chip designs will by necessity incorporate on-chip communication networks. In the project, we plan to investigate protocols and signalling technologies in the context of future on-chip multiprocessors in the 50nm regime. In this regime, interconnect delay becomes a major challenge and needs to be taken into acc...

Chip-to-world interface is a major issue in the field of microfluidics and its applications. We developed a plug and play microfluidic device composed of a fluid driving unit and a polymer chip containing microfluidic channels and reservoirs. The one and only connection of the device to the external world is a set of electric control lines for the driving unit. Just putting the reagents and sam...