Filters built from resistors (R), inductors (L) and capacitors (C) are known as RLC or passive filters and are the dominant type of filter for high frequency applications. The performance of these filters is typically limited by the inductors which are large, expensive and far from ideal in an electrical sense. By using amplifiers and feedback, the same filter characteristics can be achieved wi...

This paper deals with the wavelet-based performance analysis of the safety barrier for use in a full-scale test. The test involves a vehicle, a Ford Fiesta, which strikes the safety barrier at a prescribed angle and speed. The vehicle speed before the collision was measured. Vehicle accelerations in three directions at the centre of gravity were measured during the collision. The yaw rate was m...

The objective of this paper is to develop a realistic and operational macroscopic traffic flow simulation model which requires relatively less data collection efforts. Such a model should be capable of delineating the dynamics of traffic flow created by the merging and diverging activities and complex geometric conditions. In addition, it should have the capability of describing shock wave phen...

Maritime Interdiction (MI) operations are an increasing important element of the littoral environment. This is demonstrated by the International anti-piracy operations around the Horn of Africa and the establishment of the NATO Maritime Interdiction Operational Training Centre (Crete, Greece). The type of MI operation described is the insertion of a ship boarding team, via high speed craft, fro...

the modern surgical endodontic treatment is a safe and predictable procedure with high success rate. however, several factors can retard or impede the proper healing process. use of a high speed handpiece during hard tissues management (osteotomy and apical resection) can potentially be one of these factors. formation of metallic debris from the surgical diamond burs, production of necrotic loc...

This research describes an approach to objective assessment of mental workload, by analyzing differences in pupil diameter and several aspects of eye movement (fixation time, saccade distance, and saccade speed) under different levels of mental workload. In an experiment, these aspects were measured by an eye-tracking device to examine whether these are indeed indicators for mental workload. Pu...

We describe the design and partial implementation of a real time architecture for a mobile robot, aimed particularly towards a vehicle developed for factory automation.. We develop a layered design to equip the robot with a number of behavioural competences. We examine sensing and a potential field algorithm especially to achieve modification of behaviour a t a speed close to the robot’s operat...

This paper compares design approaches for achieving a headway control functionality for trucks and buses. The approaches considered are fuzzy logic [1], H∞ [2], and a strategy based on headway range and its derivative (range-rate) [3]. For heavy vehicles, the control unit has a number of nonlinearities to compensate for, including full accelerator saturation, engine characteristics, and a limit...

China is planning to launch more and more optical remote-sensing satellites with high spatial resolution and multistep gains. Field calibration, the current operational method of satellite in-flight radiometric calibration, still does not have enough capacity to meet these demands. Gaofen-1 (GF-1), as the first satellite of the Chinese High-resolution Earth Observation System, has been speciall...

In this paper, we use FPGA chips to realize the high throughput 128 bits AES cipher processor with new high-speed and hardware sharing functional blocks. The AES functional calculations include four transformation stages, which are the SubBytes, the ShiftRows, the MixColumns and the AddRoundKey. First, the content-addressable memory(CAM) based scheme is used to realize the proposed pipelined hi...