We consider the movement minimization problem in a conveyor flow shop processing controlled by one worker for all machines. A machine can only execute tasks if the worker is present. Each machine can serve as a bu¤er. The objective is to minimize the total number of movements of the worker for the processing of all jobs. Such minimization problems usually appear in conveyor controlled manufactu...

A new current conveyor block, called a balanced-output third generation inverting current conveyor (ICCIII+−), is introduced in this paper. A novel CMOS realization for this block is proposed. To show the strength of this block, many applications are given, such as integrators, filters, and an oscillator. The proposed ICCIII+− and the presented applications are tested with SPICE simulations usi...

This project aims to develop a novel large stroke asymmetric pneumatic servo system of a hardware-in-the-loop for path tracking control under variable loads based on the MATLAB Simulink real-time system. High pressure compressed air provided by the air compressor is utilized for the pneumatic proportional servo valve to drive the large stroke asymmetric rod-less pneumatic actuator. Due to the p...

AIM Previous research has shown that general practitioners (GPs) rarely use pneumatic otoscopy or tympanometry as recommended by best practice guidelines for diagnosing otitis media. The purpose of this study was to determine whether a multimodal, interactive training workshop on the techniques of pneumatic otoscopy and tympanometry would improve the confidence of GPs for the diagnosis of otit...

OBJECTIVE To determine to what extent FPs teach and use pneumatic otoscopy and to identify the chief influences on this behaviour. DESIGN Mixed-methods descriptive study conducted between March and May 2011. SETTING The family medicine residency program at Laval University in Quebec city, Que. PARTICIPANTS Directors of the family medicine teaching units (FMTUs), teachers, and residents. ...

BACKGROUND Intrasphincteric injection of botulinum toxin is a new treatment option for achalasia. AIMS To compare the immediate and long term efficacy of botulinum toxin with that of pneumatic dilatation. METHODS Symptomatic patients with achalasia were randomised to botulinum toxin (22 patients, median age 57 years) or pneumatic dilatation (20 patients, median age 56 years). Symptom scores...

In this work, we present new topologies for realizing one lossless grounded inductor and two floating, one lossless and one lossy, inductors employing a single differential difference current conveyor (DDCC) and a minimum number of passive components, two resistors, and one grounded capacitor. The floating inductors are based on ordinary dual-output differential difference current conveyor (DO-...

The well known problem of priority inversions that occurs in classical real-time systems also manifests in decentralized cyber-physical systems. Using a specific example of composable conveyor systems, we show how priority inversions hinder the transport of entities through the conveyor systems. We present a novel adaptation of the classical priority inheritance protocol for resolving these cyb...

Many problems which occur with belt conveyors can be attributed to system dynamics and the associated variations in belt tension. Material spillage, belt and splice failure, belt lift-off in vertical curves and poor tracking are a few examples of situations where knowledge of the dynamic tensions would be of benefit in eliminating a problem. The difficulty is that measuring dynamic tension at a...

The paper presents a current tunable multifunction filter using current conveyor. The proposed circuit can be realized as on chip tunable low pass, high pass, band pass and elliptical notch filter. The circuit employs two current conveyors, one OTA, four resistors and two grounded capacitors, ideal for integration. It has only one output terminal and the number of input terminals may be used. F...