MMU Press (Multimedia University)
Not a member yet
714 research outputs found
Sort by
Development of Visual-based Rehabilitation Using Sensors for Stroke Patient
No full textThis project concerns on the development of applications using sensors for the rehabilitation of stroke patients. Thus, the leap motion sensor is employed for the finger motor rehabilitation training while the Microsoft Kinect sensor is utilized for the upper limb motor rehabilitation. Two applications which are named ‘Pick and Place’ and ‘Stone Breaker’ are developed. For the first application, the patient is required to pick up the virtual blocks and stack it up. The ‘Stone Breaker’ game requires the patient to move the upper limb in controlling the paddle movement in the game. At the end of the project, it is able to achieve the dominant objective of the project when the tested patient shows significant improvement in both the application.
Manuscript received: 20 Jun 2020 | Revised: 30 Aug 2020 | Accepted: 4 Oct 2020 | Published: 30 Oct 202
Performance Evaluation of Capacitive Based Force Sensor for Electroencephalography Head Caps
No full textAccurate electrode signal measurement using EEG head caps can only be achieved through sufficient contact or force. A flexible force sensor is required to obtain accurate force measurement underneath EEG head caps. In this study, we evaluate the performance of a capacitive based sensor including its accuracy, repeatability, hysteresis, and stability. The result shows that accuracy error and repeatability error were 3.03±2.8 % and 3.84±2.92 %, respectively. The stability errors were 2.37±0.15 % (10 gram), 2.54±0.00 % (50 gram), 2.37±0.15 % (100 gram), 5.07±1.16 % (150 gram), 7.27±0.39 % (200 gram). The hysteresis error of the sensor was 4.48±0.47 %. Based on the results, the capacitive based force sensor provides sufficiently low errors in accuracy, repeatability, stability, and hysteresis and is thus suitable for measuring adduction force in EEG cap applications.
Manuscript received: 20 Jun 2020 | Revised: 10 Aug 2020 | Accepted: 23 Sep 2020 | Published: 30 Oct 202
Estimation of Surface Runoff to Support Flood Hazards Early Warning Using Landsat 8 OLI Imagery
No full textThis study aims to determine the estimated surface runoff in the Diro sub-watershed in Kulon Progo Regency using OLI Landsat 8 imagery. Landsat images are used to determine the type of land cover which is one of the watershed characteristics. The method used to determine the surface runoff coefficient value in the Diro sub-watershed was using the cook’s method. The parameters used to determine the value of surface runoff include vegetation density, flow density, soil type and slope. The results showed that the sub-watershed Diro has a surface coefficient value of 0.7999 and is in the high category
Spatial Variability Assessment on The High-resolution Chlorophyll-a Extraction from Landsat 8 and Sentinel 2 Imageries in Johor Waters
No full textHigh resolution Chlorophyll-a (Chl-a) can indicate the trophic status of the water and provide useful information on optical features of water body in water quality monitoring. Remote sensing has great potential to offer the spatial and temporal coverage needed. Over the last decades the SeaWIFS and MODIS were applied, but not suitable due to the low spatial resolution for monitoring Chl-a in coastal area. However, the retrieval of Chl-a in the coastal region is usually challenging due to the other in-water substances regardless of Chl-a, hence resulting in the satellite retrieved Chl-a overestimation. By the advancement of the Sentinel-2 and Landsat 8 satellites, continuous high resolution optical imageries have served for remarkable coastal mapping capability thanks to the spectroscopic capability certain spectral bands and as high as 10-meter spatial resolution. This paper aims to evaluate the performance of the SEADASS and SNAP processor for Chl-a estimation from the Operational Land Imager (OLI) and MultiSpectral Instrument (MSI) data in Johor waters. The representative models, in standard algorithm OC3 and C2RCC, were adapted to retrieve Chl-a concentration. The statistical regression has shown that these algorithms give an acceptable Chl-a estimation at medium and high resolution with R2 = 0.44 from OC3 and R2 = 0.55 from C2RCC comparing to the in-situ data. Despite of the spatial, temporal and spectral variability, this paper shows that OLI and MSI could provide Chl-a mapping capability at suitable Chl-a estimation techniques
Investigation of MEH-PPV OLED Assisted by An IoT Environment Monitoring System
No full textSingle layer organic light emitting diode (OLED) devices based on poly{[2-methoxy-5-(-2ethylhexyloxy)-1,4-phenylene]vinylene} (MEH-PPV) are fabricated and studied in this work. There are several factors that affect the performance of the fabricated OLED samples. Some of these factors are related to the fabrication parameters chosen for the OLED fabrication process. The effect of concentration and annealing temperature are investigated. Other environmental factors such as humidity or temperature affect the performance of fabricated OLED samples under long term exposure. An internet of things environment monitoring system (IoT-EMS) is developed to monitor and study the effect of these factors on the performance of the OLED samples. Exposure to humidity is found to severely degrade the samples. In summary, the optimum concentration for MEH-PPV is concluded to be 4 mg/ml, and the best annealing temperature is 90°C in this study. It is also deduced that humidity of 72-75 % caused degradation of the samples in less than 20 hours
Backscattering Analysis of Cylinder Shaped Scatterer in Vegetation Medium: Comparison Between Theories
No full textThis paper analyses the backscattering cross section of a cylinder both using traditional method model and a new numerical solution model, namely Relaxed Hierarchical Equivalent Source Algorithm (RHESA). The purpose of this study is to investigate the prospect of incorporating numerical solution model into volume scattering calculation, to be applied into microwave remote sensing in vegetation area. Results show a good match, suggesting that RHESA may be suitable to be used to model the more complex nature of vegetation medium.
Protein Concentration Determination in Latex Glove Using Biocompatibility Morphological Mean Test
No full textLatex gloves are seen as an indispensable item in the healthcare field because it offers superior protection for both the medical staff and patient against harmful substances. However, latex gloves with high protein concentration have a high possibility to induce latex allergy which in the worst case can lead to a life-threatening condition. To minimize the occurrence of an allergy reaction, the computerized Biocompatibility Morphological Mean (BMM) test for protein detection is proposed. This test initially goes through the chemical process to determine the protein that resides in the glove sample. After that, the sample is electronically converted into a digital image. Finally, the image undergoes color image processing for calculating the color difference values. These values are then plotted on a standard curve. A high correlation coefficient (R2>0.97) of the standard curve gives better accuracies. The proposed method only takes about 40 minutes to complete the test, while existing methods need at least 6 hours.
Manuscript received: 17 Jun 2020 | | Revised: 27 Aug 2020 | Accepted: 2 Oct 2020 | Published: 30 Oct 202
Life Case: Inelastic Collision based Automobile Crash Detection and Alert System via 3G Network
No full textAccident detection and alert systems that can pinpoint the whereabouts of an accident are crucial to ensure the concerned authorities are informed instantaneously about the occurrence of an accident, in order for the deployment of emergency response to save lives in the least amount of time. A 3G incorporated accident detection system, known as Life Case is designed to discover the accidents between automobiles and, send the timestamp, and the actual position of an accident, to a developed android application built using Android Studio, via a cloud database. The alert message is presented using Google Maps which helps user to save plenty of time through easy navigation feature towards the accident location. Life Case measures the acceleration of an automobile during a collision using the Theory of Inelastic Collision.
Parametric Study of Photovoltaic Thermal Solar Collector Using An Improved Parallel Flow
No full textPhotovoltaic Thermal Solar Collector (PVT) is a hybrid technology used to produce electricity and heat simultaneously. Current enhancements in PVT are to increase the electrical and thermal efficiencies. Many PVT factors such as type of absorber, thermal conductivity, type of PV module and operating conditions are important parameters that can control the PVT performance. In this paper, an analytical model, using energy balance equations, is studied for PVT with an improved parallel flow absorber. The performance is calculated for a typical sunny weather in Malaysia. It was found that the maximum electrical and thermal efficiencies are 12.9 % and 62.6 %, respectively. The maximum outlet water temperature is 59 oC.
Effect of Laminating Press’s Opening-Stacking Position on Adhesive Thickness in Coverlay/Adhesive/Flexible-Printed-Circuit Sheet
No full textThis study is to investigate the dependence of coverlay’s adhesive thickness on the laminating press’s opening-stacking position. Coverlays using acrylic- and epoxy-based adhesives were laminated onto similar size copper clad laminate (CCL) at 140 bars and 195°C for 150 min. Adhesive thickness measurements show opening-stacking positions near to the bottom of laminating press machine produced more consistent adhesive thickness as compared to the top positions