The aim of the study was to compare the measurements of optical (AL-Scan; Nidek Co., Ltd.) and ultrasonic (Echo Scan US-800; Nidek Co., Ltd.) biometry devices and to assess refractive results after cataract surgery. Eighty-one cataractous eyes of 81 patients were included in this study. Biometry was performed using the AL-Scan and an ultrasonic biometer (USB). Axial length (AL), keratometry (K)...

-A novel high and low speed output buffer circuit is proposed for Universal Serial Bus (USB) interface applications. Operation principles of this novel buffer are developed based on slew rate control and delayed turn-on technique. The mechanism for slew rate control is process variation self compensating. So, both precise rise and fall times of the output signal have been obtained for low speed...

This paper presents a breakthrough decomposition theorem on routing topology and its applications in the designing of universal switch blocks. A switch block of k sides and W terminals on each side is said to be universal (a (k, W )-USB) if it is routable for every set of 2-pin nets with channel density at most W . The optimum USB design problem is to design a (k, W )-USB with the minimum numbe...

This report represents the design and implementation of a skin temperature measurement system. The system aims to measure the skin temperature from a sensor and send it to the PC using a USB cable to display on screen. The data needs to be updated every second. The PIC18F4550 microcontroller has been used in this project to obtain data from the sensor and send it to the PC using USB 2.0 that ha...

A Universal Serial Bus (USB) Mass Storage Device (MSD), often termed a USB flash drive, is ubiquitously used to store important information in unencrypted binary format. This low cost consumer device is incredibly popular due to its size, large storage capacity and relatively high transfer speed. However, if the device is lost or stolen an unauthorized person can easily retrieve all the informa...

This paper presents an improved approach of multi-temporal interferometric synthetic aperture radar (InSAR) for detecting land subsidence phenomena by using time series of high resolution SAR images. Our algorithm extends the capability of the temporarily coherent point (TCP) InSAR technique proposed previously to detect subsidence even in the case of a small number of SAR images available for ...

The ’64 Mustang is a classic: a car that people still talk and reminisce about 44 years on. Do you mess with success and change a winning formula? No, but you do update a design to fix weaknesses in the original (better audio, air-conditioning, reliability, etc.) and to address new consumer desires as the market changes (efficient engines to address fuel economy, catalytic converters to address...