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Atmospheric hazards that may be present in confined space poses serious threat to human while carrying out special task in the respective location. Areas that are considered as confined space are utility tunnel, boiler, storage tank, sewage lines, man holes and underground electrical fault. Currently, there is no specific technique to replace worker in performing tasks such as collecting air sample...
Confined space is an enclosed area with limited space to perform work activity which could contribute towards atmospheric hazards accidents. To avoid this, the environment needs to be observed. The air sample can be monitored using the integration of Electronic Nose (e-nose) and mobile robot. This work proposed the development of e-nose purging technique for confined space application. An active carbon...
We propose a technique to modulate the pump light of phase-shift pulse Brillouin optical time domain analysis (PSP-BOTDA) with Walsh code in a nested configuration. We call it dual Walsh codes PSP-BOTDA. In this technique, two Walsh codes are each assigned to return-to-zero (RZ) and non-return-to-zero (NRZ) pulses. Simulation and experiment results have shown that the assignment of Walsh to the non-return-to-zero...
In this paper a three-phase field excitation switched flux (FESF) motor where both armature coil and field excitation (FE) coil placed on the stator is investigated. The rotor is design with separately segmental pole so that flux generated from FE Coil can be fundamentally placed in adjacent with flux of armature coil. Thus, the coil end length of both FE Coil and armature coil are reduced, hence...
Synchronous Generator (SG) can be either using permanent magnet (PM) or field-excitation (FE) coil as their main flux sources are located in rotor part. However, synchronous generator using FE has advantages of variable flux control capabilities when compared to fix permanent magnet flux. In this research SG with various FEC configurations is investigated. Several slot-pole SG configurations such...
This paper describes the proposed optical electrocardiograph (ECG) using self-mixing interferometer technique with a customized electro-optic phase modulator as the transducer. The surface ECG signals were recorded using commercially available electrodes demonstrating the feasibility of measuring the ECG signal using the SMI technique with its attendant benefits of intrinsic electrical safety and...
Protein features are often complex, and they are challenging to classify. In identifying the most discriminatory features in protein sequences, we propose a new feature-selection strategy by integrating the multivariate filter and Particle Swarm Optimisation (PSO) algorithms. Experimental results, based on the number of reducts and classification accuracy, were analysed in both the filter and wrapper...
In this paper we propose a new approach based on Symbolic Aggregate approximation (SAX), called improved iSAX to recognize efficient and accurate discovery of the important patterns, essential for time series data. The original SAX approach allows a very high-quality dimensionality reduction and distance measures to be defined on the symbolic approach and it is based on PAA (Piecewise Aggregate Approximation)...
Association rules are adopted to discover the interesting relationship and knowledge in a large dataset. Knowledge may appear in terms of a frequent pattern discovered in a large number of production data. This knowledge can improve or solve production problems to achieve low cost production. To obtain knowledge and quality information, data mining can be applied to the manufacturing industry. In...
Outlier is strange data values that stand out from datasets. In some applications, finding outliers are more interesting than finding inliers in datasets, such as fraud detection, network system, financial and others. In this research, an algorithm is proposed to find minimum non-Reduct based on Rough set using Particle Swarm Optimization (PSO) for outlier detection. Like Genetic Algorithm (GA), PSO...
This paper proposes a new feature-selection strategy by integrating the Rough Set Theory (RST) and Particle Swarm Optimisation (PSO) algorithms to generate a set of discriminatory features for the classification problem. The proposed method is seen as a marriage between filter and wrapper approaches in which the RST is used to pre-reduce the feature set before optimisation by PSO, a meta-heuristic...
Individual protection, physically or mentally, is very important for someone living in a risk environment. Insurance is one of the individual protections due to accident, blaze, critical diseases or death. Insurance company plays a critical role in providing competitive product insurance that covers flexible features depend on customer requirements. In order to compete with other competitors and fulfill...
This paper discusses the development of an artificial heterogeneous breast phantom that emulates the electrical properties of human breast over the ultra wideband frequency range of 3.1GHz to 10.6GHz. The developed breast phantom has a realistic hemispherical shape and dielectric properties which are close to those of the different real breast tissues. This artificial breast phantom is to be used...
The difficulty of maintenance has been stated as among the factors contributing to the abandonment of many commercial expert systems. Ripple down rules approach to knowledge acquisition and representation has made maintenance of such system easier and less expensive. This paper presents the insight gained from four healthcare organizations which are currently using Lab Wizard, an expert system which...
Trust play important roles in Mobile ad hoc networks since nodes may randomly joined and leave the network at their own pace. In catastrophe like massive accident or earthquake, groups of rescue personnel form a temporary network structure at the rescue site using their portable devices for coordinating the rescue relief. These groups of user from different agency need to use the temporary network...
In this paper, we apply an ultra wideband radar technique to detect and locate small cylindrical objects in a dielectric cylindrical body emulating the woman's breast. We propose a new image reconstruction algorithm which exploits the monopulse radar principle involving a 2-element array antenna. Using the difference of two signals received by the elements of this array, the part of the signal due...
This paper investigates the performance of the Self-Mixing Interferometer (SMI) based on Vertical-Cavity Surface-Emitting Laser (VCSEL) under the influence of polarization mode switching due to optical feedback. The SMI signals are acquired using the variation in junction-voltage of the single mode VCSEL while the optical power in two orthogonal polarizations of the VCSEL fundamental mode are monitored...
This paper presents the development of Virtual Tembaga Ordering System (VTOS) that focused on interactivity in 3D product using Virtual Reality Modeling Language (VRML). VTOS was developed using PHP language with the integration of VRML capabilities in order to adapt real shopping experience for users while examining the product before purchase. Users/customers have the chance to view the 3D object...
As most of the microwave imaging techniques for breast cancer detection rely on the three-dimensional distribution of the scattered signals, the knowledge of the possible distribution of those scattered signals around the imaged breast is vital to improve the processing techniques, and thus to get an accurate three-dimensional image of the breast. In this paper, a closed form solution is presented...
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