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Irrelevant features may lead to degradation in accuracy and efficiency of classifier performance. In this paper, Bootstrap Causal Feature Selection (BCFS) algorithm is proposed. BCFS uses bootstrapping with a causal discovery algorithm to remove irrelevant features. The results are evaluated by the number of selected features and classification accuracy. According to the experimental results, BCFS...
This works introduces a wireless signal processing platform based on a low-power FPGA. The architecture of the circuit is customized for the processing of sensor data used in biomedical applications such as ECG, EEG, or activity recognition using wearable computing. Hardware accelerators can be dynamically reconfigured to implement multiple signal processing tasks in a time-multiplexed manner. This...
Electrical stimulation is an important technology for medical devices; however, safely limiting the electric current injection is an issue that remains to be solved. To improve the electrical properties of electrodes, we have proposed the use of tubular membrane proteins for achieving intracellular stimulation. This electrode, called “proteoelectrode”, is designed to control membrane potential across...
Bone drilling by using heat energy from microwave is a promising research issue and has been proposed by some researcher. However, there are still some interesting topics remaining to be investigated especially in term of a temperature variation during burning or drilling process and a prediction of an extreme burning size or drilling diameter. In this paper, we propose an FEM investigation of bone...
A challenge in using myoelectric signals in control of motorised prostheses is achieving effective signal pattern recognition and robust classification of intended motions. In this paper, the performance of Matlab's Multi-layer Perceptron (MLP) backpropogation training algorithms in motion classification were assessed. The test and evaluation platform used was “BioPatRec”, a Matlab-based open-source...
This paper focuses on a biomolecular detection method based on amplification and encoding with DNA reactions. For proof of the concept, we demonstrate that encoding of molecular signal with amplification is achievable using a hybridization chain reaction with fluorescence resonance energy transfer.
This article presents a proposal to measure the Bone Mineral Density (BMD) as a backup in the diagnosis of osteoporosis. An antenna arrangement, tuned to a frequency of general and medical use, is used to measure the relative attenuation of the signal on several samples of bovine bone, silica and bone powder. By implementing a Support Vector Machine (SVM) it is possible to establish patterns to classify...
In the postural analysis, body sway parameters have been used to assess the steadiness of posturography in standing subject. The aim of this study was to compare correlations among ten different body sway parameters. We hypothesized that stronger correlations would exist in our system as corresponding to the conventional force plate method. The calibrated gyroscope sensor was attached to the subjects...
The characteristics of hearing aids should be determined and regulated to ensure patient safety and to optimize the performance of the hearing aids. The objectives of this work were to design and develop a hearing aid measurement system to obtain the performance characteristics of the hearing aids. The implementation of this work is based on the method recommended in the International Electrotechnical...
This paper presents a biomechatronic approach to the design and fabrication of an artificial arm, focusing on designing artificial shoulder, biceps, wrist and hand. The proposed design provides a novel tool towards upper limb amputee rehabilitation process. Detail 3D designs of the artificial arm are described including an elbow powered by a car's power window motor, DC motor powered wrist and a string...
We have researched to control microbubbles in blood vessel by use of the acoustic radiation force for efficient and lower adverse effects medical treatments. However, behavior of microbubbles under the ultrasound exposure is complicated because of many kinds of parameters. In addition blood vessel network in human body is not simple. From these reasons, it is important to estimate emission condition...
Conductance catheterisation can be used to measure intraventicular volume during the cardiac cycle in continuous real time. However, for pressure-volume loop analysis in cardiology, the conductance catheterisation needs more to be developed. This paper presents use of a microelectronic pressure sensor to develop the conductance catheterisation. Results show how possible to use the developed conductance...
The electrical neuromodulation of the autonomous nervous system is a relatively new field of research with targets such as relief of pain by spinal cord stimulation or deep brain stimulation for Parkinsons disease. Regarding the prevention of cardiovascular diseases, one idea is to electrically stimulate e.g. the sympathetic nervous system, which can typically only be influenced by release of medication,...
This paper proposes image processing technique for the early detection of glaucoma. Glaucoma is one of the major causes which cause blindness but it was hard to diagnose it in early stages. In this paper glaucoma is classified by extracting two features using retinal fundus images. (i) Cup to Disc Ratio (CDR). (ii) Ratio of Neuroretinal Rim in inferior, superior, temporal and nasal quadrants i.e....
The growth of medical tourism in Thailand attracted many organizations to develop applications for assisting traveler information. However, these applications may not satisfy all traveler's requirements in term of medical, tourism and social network. In consequence, this study has been proposed a new prototype of the mobile social network application to support medical tourist's requirement. The proposed...
Electronic health record systems are gradually coming into use at large hospitals, but are not yet implemented at clinics. This is due to both expensive costs and a lack of interest in checking electronic health records on the part of patients. And doctors also do not want to show patients their health records, as it then may require a doctor to let patients observe images to check for improvement...
The existing problem of current nose tip detection research is to extract the nose from any viewpoint. In this paper, we propose a new method for localizing the nose tip by using an ellipsoid fitting technique. A 2.5D partial face dataset which contains partial face data, captured from any viewpoint between +/−45 degrees, is used for the experiments. This proposed method consists of three steps. First,...
For an automatic chromosome classification, band resolution information is required in order to perform diagnosis on numerical and structural abnormalities. Metaphases with low band resolution are normal used for numerical abnormality analysis while metaphases with high band resolution are used for structural abnormality analysis. In our work, we classify metaphases into low and high band resolution...
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