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Construction projects are more often than not plagued by poor performances such as delays, cost overrun, low productivity, construction wastes and compromised quality. Amongst the critical contributory factors of poor project performances, is the ineffectiveness of materials management occurring in the construction sites. Indeed, materials management is a very important component for construction...
Breast cancer cases are increasing year by year and second leading reasons for the women's death worldwide. Early detection is very important and will help to save thousands of peoples' lives. The available systems such as Mammogram, MRI and ultrasound are invasive, expensive and need expert to operate. This paper presents a low cost and non-invasive breast cancer detection system for early detection...
This paper proposes a dual band antenna for future millimeter wave wireless communication. The performance of this dual band antenna is analyzed in term of reflection coefficient when some of the length of the patch antenna was adjustable, overall gain and total efficiency for both frequencies respectively. The size of this presented patch antenna is 4.9 × 7.6 mm2. The dual band antenna was fabricated...
This study examines the production of biodiesel from vegetable palm oil (VPO) via transesterification catalyzed by calcium oxide modified with titanium dioxide (CaO-TiO2) under UV light. Response surface methodology (RSM) with central composite design (CCD) was used to optimize the biodiesel yield. The optimized conditions for transesterification were 2.52wt.% for catalyst dosage, 3:4 for volumetric...
In this paper, a new 3-dB branch-line coupler using PDMS substrate and Shieldit Super fabric conductive material is presented. The Shieldit Super fabric has low resistance less than 0.1/sq. and resulting in good conductivity. Both the simulated and fabricated coupler circuits demonstrated a 3 ± 1 dB fractional bandwidth (FBW) for the coupling as a result of the microstrip-slot created at the ground...
A dualband bandpass filter topology is proposed, based on a side-coupled ring resonator. The ring is one-wavelength long, and the power is coupled into and out of the ring via two quarter-wavelength coupled-line sections. A dualband bandpass response of first order is obtained, which is symmetrical to the centre frequency, on where the electrical length of the ring is referred. A transmission zero...
Wireless sensor network (WSN) is commonly used for localization applications. Through sniffing receive signal strength indicator (RSSI) in WSN system, localization and connection to access point highest RSSI can be done automatically. In this paper, we propose Raspberry-Pi (RasPi), based best access point selection method utilizing RSSI metric. The RasPi brings the advantages of a personal computer...
This paper present a new robotics simulator, completely based on Blender 3D and Python as scripting language. The simulation of robot works smoothly with six degree of freedom implemented within it, as the end effector starts to pick the object and to place it, all the links shown their rotation which definitely shown the movement mimics the real movement of robotic arm. The simulation was done with...
A dual band planar inverted F antenna (PIFA) is designed and the performance is analyzed with the presence of mobile phone casing and the presence of human hand The proposed antenna has three main elements, the ground plane, radiating patch and a shorting plate. The PIFA is fabricated on FR4 substrate with dielectric constant of 4.5. The proposed antenna dimension is optimized to achieve a compact...
This paper presents a frequency reconfigurable rectangular patch antenna capable of operating at three frequencies. The reconfigurable mechanism of the antenna can be achieved by the implementation of radio frequency (RF) p-i-n junction (PIN) diodes across a T-slot developed on the feed line of the antenna. The antenna is designed using textile based material for wearable applications. The use of...
Fourier descriptors technique has been used to extract the shape of an image based on Fourier analysis of its boundary. In this paper, a new feature extractor technique named Descriptors Average Feature Optimization (DAFO) based Fourier Descriptors shape descriptor is introduced. In order to examine the ability of this technique, this feature extractor is evaluated based on different image sizes and...
Breast cancer is an abnormal cell locates in the breast tissue. Early detection plays an important role as it helps for long-term survival. The available systems are expensive and need expert to operate it. This paper presents a low-cost and user-friendly breast cancer detection system for end user at home. This system consisted of a pair of home-made antenna, Ultra wide-band (UWB) transceiver to...
This work demonstrates a simple home automation system that allows the user to control home appliances through wireless. Lights, air conditioners, electronic doors and fans are among the appliances that can be used in this system. In this system, the controlling and monitoring the appliances can perform in two methods. The first method is through a web server meanwhile the second method is by using...
This paper presents the design and modeling of deformations of textile antenna wireless body area network (WBAN) applications. The performance of a compact planar flexible antenna is analyzed in terms of reflection coefficient and radiation pattern under bending and crumpling conditions. Unlike in the existing works, the bending condition in this work carried out in two different axes, x-axis and...
Unequally spaced arrays technique offers an alternative for limited sidelobe level reduction compared to conventional array antennas with equally spaced elements. In this paper, the abilities and design of microstrip linear array antenna, fed by multiport feeding with uniform excitation coefficient in all array elements are presented for sidelobe level reduction at 28 GHz. By using the proximity coupled...
This paper describes the development of reconfigurable frequency microstrip patch textile antenna. This antenna is composed with a truncated edges rectangular patch incorporated with the slot structure at the ground. Three BAR PIN diodes switches are placed on the slotted ground plane. By controlling the state of the switches, such antenna is able to operate at different operating frequencies. Besides,...
This paper presents a brief account of the findings on a switched parasitic dielectric resonator antenna (DRA) array excited in a higher-order mode. The scanning phase can be changed by using switching technique and capacitor loading at the parasitic element. The driven DR and parasitic DRs have a dielectric constant of 10 and were fed by a microstrip slot aperture. The impact of mutual coupling on...
Parametric study of a dual-bandpass filter based on a one-wavelength side-coupled dual-mode ring resonator is presented. The change in response of the filter based on the variation of the impedance of its lines is analyzed. The results show that the dualband resonance frequencies and their separation depend simultaneously on the ring line impedance, and the even- and odd-mode impedances of the coupled...
This paper presents the design challenges that could be faced by radiation pattern reconfigurable antenna in the Gigahertz (GHz) frequencies. This is due to the close relationship between the antenna radiation mechanism to the insertion loss and isolation loss contributed by RF switch at ON and OFF state respectively. Apart from that, the size of the antenna at higher frequencies especially above...
Wireless sensor network (WSN) is commonly used for localization analysis. Through sniffing receive signal strength indication (RSSI) in WSN system, localization of higher RSSI is connected automatically. This paper proposes the Raspberry-Pi (RasPi) based sensor node to sniffing RSSI and automatically connect the device to strongest RSSI. The RasPi brings the advantages of a personal computer (PC)...
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