The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents a review on significant parameters and techniques in water quality assessments used for drinking, domestic purposes and recreational purposes. To ensure water in good quality there are several parameters that have to be considered. Water quality index (WQI) is one of the most effective tools to an attempt to ascertain the water quality. There are many techniques on water quality...
A wireless sensor network (WSN) organizes collected data at a central location using a set of specialized transducers with a communications infrastructure for monitoring and recording conditions at various locations. A sensor network consists of multiple detection stations called sensor nodes, each of which is small, lightweight and portable. A WSN node contains several technical components which...
This paper presents a review on agarwood and its quality determination. It was found that Aquilaria Malaccensis is the main species in Malaysia and Indonesia. The agarwood has different quality or grades; similarly its essential oil. They are traded at different price according to their quality. Scientific reason showed that chemical compositions of agarwood make them different from each other, thus...
Medical images, such as dental radiographs, suffer of low contrasts and noise which make it difficult to identify disease characteristics. This work utilizes the variation of Adaptive Histogram Equalization (AHE) towards enhancing the intra-oral dental radiograph. The algorithms used are AHE, Contrast Limited Adaptive Histogram Equalization (CLAHE), Sharpening Adaptive Histogram, Equalization (SAHE),...
The body earthing technique is a kind of method that can neutralize our positive charge and negative charge in our body by connecting to the earth. It is believed that body earthing gives a positive effect on human body. There is a possibility that EEG signals can verify the positive effect of body earthing. The experiment of body earthing is done by attaching the patched kit to the hand of the subjects...
This study presents a small part of the major study, involved in categorizing EEG calmness. The kNN classifier was used to classify EEG features named as asymmetry index (AsI) which was extracted during relaxed state and non-relaxed state. Results from the previous study showed that the EEG behaviour during both states appear to have more than two groups. The group of four EEG behaviours and three...
All living body has been shown to emit radiation into space surrounding their body. The radiation field encloses the physical body and emits the characteristics of frequency radiation. This study discusses the analysis of human body radiation wave on the human torso and compares their frequency characteristics between genders. At first, the characteristic of radiation frequency is determined by employing...
This paper presents the proposed Z-Score in identifying the significant chemical compounds of agarwood incense smoke. The technique is applied to commercial, low and high quality of agarwood samples and the extraction of the compounds were performed by gas chromatography — flame ion detector (GC-FID) and gas chromatography — mass spectrometry (GC-MS) coupled with solid phase microextraction (SPME)...
This paper demonstrates the performance of Model Reference Adaptive Controller (MRAC) using Lyapunov and MIT schemes applied in steam distillation process in real-time and simulated conditions. The integral limits in MRAC were varied during the experiment. Simulated results shows that low SSE and RMSE were obtained when adaptation gain and integral limit were set to 0.003 and +0.01 respectively. However,...
The Faculty of Electrical Engineering, Universiti Teknologi MARA has been engaging industrial partners in delivering elective curriculum for almost 15 years now. The efforts are part of its endeavour to develop strategic partnerships with the industrial sector that can drive the graduates to become more competitive in a global knowledge economy. The original curriculum for the B.Eng.(Hons) in Electrical...
In extracting the essential oils, some of the influential factors need to be considered which can affect the yield and quality of the oils. Many studies have performed on several influential parameters and dictated that the temperature of extraction plays an important parameter that can give large effect on yield and quality. In order to regulate the temperature, a suitable controller is required...
Over the past few years the amount of available multimedia content in the Internet has increased significantly. The advancement of communication technologies make these contents accessible from any mobile devices. However, most of the times the content is not befitting due to some limitations of mobile device such as limited screen size, small storage capacity, unsupported file format and lower processing...
This paper presents an investigation of the reflectivity performance for hollow pyramidal shape microwave absorbers. The pyramidal absorbers used in this study is constructed using four 15cm-pyramidal absorbers stacked on each other to equal the height of one single 45cm-absorber. The wave frequency ranging from 8GHz to 12 GHz was chosen for simulation and measurement of the absorber performance....
In steam distillation process, temperature is regarded as the most significant parameter that contributes to the amount of output yield and quality of oil. Recently, most of steam distillation system use open loop system to control temperature while is done manually by skilful operators. It is well known that open loop system is sensitive to the parameter variations and disturbances. The hybrid fuzzy...
This paper presents the application of Artificial Neural Network (ANN) in agarwood oil grade classification. The work involved of the extraction of chemical compounds by GC-MS, identification the significant chemical compounds using Z-score, generating the synthetic data using a dedicated formulae and application of ANN classification. The ANN classification is performed and its performance is measured...
The hybrid fuzzy plus PID (HF+PID) controller using 3, 5 and 7 membership functions was implemented in hydro-diffusion essential oil extraction system. This controller was designed to regulate the steam temperature during extraction process for the purpose to achieve the desired target. In the extraction process, the temperature is very important variable that gives largest effect to the percentage...
This paper presents the design of a model reference adaptive control (MRAC) for regulating temperature for glycerin bleaching process. Two well known MRAC designs which are MIT and Lyapunov approach are considered. The model of the system is developed based on Auto-Regressive with Exogenous Input (ARX) model. To prevent MRAC from windup problem and to provide robust performance simple modification...
Wireless sensor network and its applications are interesting research that have been focused recently. Battery consumption of sensor nodes is the main problem in the family of wireless sensor that should be solved. So, to increase the scalability of the network, and to reduce the energy usage for overall sensor operations, clustering techniques and data aggregation are the main focus in this paper...
In this study, Relative Power Ratio (RPR) technique is used to analyze the Power Spectral Density (PSD) of the EEG signal. RPR technique is used to observe the difference value of power spectral between sub bands for difference level of group for stroke. In this research, more than hundred stroke patients brainwave activity with open eyes (OE) session are used. Then, they are group into Early Group...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.