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This paper proposes an integrated approach for the identification of daily hand movements with a view to control prosthetic members. The raw EMG signal is decomposed into Intrinsic Mode Functions (IMFs) with the use of Empirical Mode Decomposition (EMD). A number of features are extracted in time and in frequency domain. Two different dimentionality methods are tested, namely the Principal Component...
Phthalate esters are known ubiquitous teratogenic and carcinogenic environmental and food pollutants. Their detection and quantification is strictly laboratory based, time consuming, expensive and professionally handled procedure. Presented research work describes a real time non-invasive detection technique for phthalates detection in ethanol, water and drinks. The new type of inter-digital sensor...
The probability density function (PDF) of surface electromyography (sEMG) signals can be modelled with the Gaussian and Laplacian PDFs. However, the sEMG PDF is dependent on the levels of contraction of the muscles. Different techniques have been proposed for testing Gaussianity levels of sEMG, i.e., kurtosis, negentropy, and mean bicoherence power, whereas the suitable technique has not been reported...
We propose the demonstration of a hardware prototype of an emulator of peripheral nerve, eventually intended for testing bio-potential recording systems. The results of live interactions with the prototype are observed on a customized software based oscilloscope. The emulator represents a real nerve in terms of impedances, electrode voltages and action potential propagation characteristics.
A new process for making SU-8 neural probe with fluidic channels and gold electrodes based on multi-layered thin parylene and SU-8 is presented here. This approach can realize a thin 15 µm gap between electrode surface and neural cells. The thin gap will help to enhance the neural signal acquisition. Fluidic testing and mechanical testing are conducted to ensure the device reliability.
According to NFPA 70E, more than 2000 workers are admitted to hospital burn centers per year for extensive injuries caused by arc flash accidents. Arc flash incidents occur when unintended electric current flows through air, superheating the air and causes an explosion. Recognizing the significant threat posed by arc flash hazards, IEEE and NFPA have joined forces on an initiative to support research...
On the road to the portable pulsed power generators, application of the ceramic capable of high energy density in energy storage for pulse forming line has aroused great enthusiasm in the research group of pulsed power technology. The niobate glassceramic investigated in this paper is promising for applications in parallel-plate, stacked Blumleins, which represents an alternative to achieve the required...
μL-scale microbial fuel cell (μMFC) technology has the potential to serve as an efficient renewable energy harvester for a variety of applications ranging from, on chip devices to autonomous sensors in remote locations. However, low voltage and power outputs have restricted such microbial fuel cells (MFCs) from most practical applications. To bypass this limitation, we present a stackable microfabricated...
In this paper we present a biometric person recognition system based on EEG signals incorporating a novel strategy to find and utilize the most informative data segments using the concept of Sample Entropy. The users are presented with a stimulus that prompts a motor-imagery response. This is then measured using an array of EEG sensors. A sliding-window segmentation scheme and Wavelet Packet Decomposition...
Digital micro fluidic technology is being increasingly used for implementing a lab-on-a-chip with many life-critical applications. Testing of these biochips is thus indispensable not only after manufacture, but also during in-field operation. To keep the product cost (including both design and test) low for disposable biochips, efficient on-line test techniques are desirable. All previous on-line...
Digital Micro fluidic biochips have been developed as a promising platform for Lab-on-chip systems that manipulate individual droplet of chemicals on a 2D planar array of electrodes. Due to the significance of the correctness of the results -- fault tolerance and dependability becomes a major issue for operation of these devices. Therefore, such devices are required to be tested frequently both off-line...
Access to clean water, free of biological contamination, is a serious problem in many parts of the world. Bleach (i.e. sodium hypochlorite) can be used to kill these biological contaminants. A simple, robust on-site method to generate bleach is presented. The system consists of a pair of electrodes, a solar panel and a disposable water bottle. Preliminary field testing in Uganda is discussed.
A testing procedure has been developed with the aim to investigate and to screen the current interruption capability of vacuum interrupters with different contact materials. A synthetic circuit delivering a 1.2ms pulse current up to 18 kA was used in order to simulate a surface temperature on the electrodes similar to the constricted arc mode. At current zero a pulse voltage was injected to stress...
The aim of this paper is to describe the Scanning Electron Microscope (SEM) and the Energy Dispersive X-Ray (EDX) test results of the original and tested electrodes used for Partial Discharge Inception Voltage (PDIV) measurement, as well as for the arcing test of mineral oil. The experimental investigations were performed with the mineral oil, Nynas 4000x, with the water content not more than 10 ppm...
This paper presents a biometric person recognition system using electroencephalogram (EEG) signals as the source of identity information. Wavelet transform is used for extracting features from raw EEG signals which are then classified using a support vector machine and a knearestneighbour classifier to recognize the individuals. A number of stimuli are explored using up to 18 subjects to generate...
This study proposes a method to forecast the state of charge (SOC) of Li-ion batteries using Fuzzy inference system and Fuzzy identification. In this study, 5 pieces of Li-Co batteries were used in this research for the life-cycle testing. The cycle testing includes CC (0.5C)/CV (4.2V) charge, CC (0.2, 0.4, 0.6, 0.8, 1C) discharge, and the rest time (one minute). The life-cycle testing indicates the...
It was newly found that nano filler particles will decelerate tree growth or accelerate it according to the level of applied voltage. It is extremely interesting as for how they will act on tree propagation. There are three regions recognized for tree propagation speeds. That is, a tree grows starts but stops under a certain lower voltage (Region 1), it grows up to the opposite electrode above a certain...
In this paper we apply common spatial pattern (CSP) to the classification of electrooculography (EOG) signals with four distinct classes, namely, eye blinks (EB), eye rotation clockwise (ERC), vertical eye movement (VEM) and horizontal eye movement (HEM). We first describe the CSP and Linear Discriminant Analysis (LDA) algorithms with two classes. We apply the classification method to a database with...
EEG signals usually have a high dimensionality which makes it difficult for classifiers to learn the difference of various classes in the underlying pattern in the signal. This paper investigates several evolutionary algorithms used to reduce the dimensionality of the data. The study presents electrode and feature reduction methods based on Genetic Algorithms (GA) and Particle Swarm Optimization (PSO)...
Dimension reduction is an important step toward asynchronous EEG based BCI systems, with EA based Feature/ Electrode Reduction (FR/ER) methods showing significant potential for this purpose. A PSO based approach can reduce 99% of the EEG data in this manner while demonstrating generalizability through the use of 3 new subsets of features/electrodes that are selected based on the best performing subset...
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