Journal of Emerging Trends in Engineering and Applied Sciences - latest Issue
Volume 7, Issue 4, 2016
Source: Journal of Emerging Trends in Engineering and Applied Sciences 7, pp 161 –166 (2016)More Less
In recent years, many research trends have been arisen in the current state-of-the-art in Wireless Sensor Networks (WSNs). One of new research trends is to design a Wi-Fi sensor device that provide better data exchange rate. In this paper we introduce new Wifi mote platform that is capable of large data exchange and fulfills the requirement of the low cost which is ported the core of Contiki Operating System inside; the simulation's solution is also provided to measure the power consumption for this mote in advance.Wi-Fi mote platform is a new researching in WSNs which name is UITmote with many advantages as: using Wi-Fi IEEE 802.11 technology to transfer data with high data rate, low-cost hardware and using Contiki operating system to optimize and manage the power consumption efficiency. UITmode proved extremely effective for WSNs whenever large data-rate exchange is required (anti-thief system, record the habits of the wild animals or supervision of construction works). Besides that, simulation UITmode in Cooja can demonstrate the efficiencies of it and also predict the context can be happened in real life to design the WNSs when use it by simulation.
Source: Journal of Emerging Trends in Engineering and Applied Sciences 7, pp 167 –172 (2016)More Less
In this report, Coconut fibre was modified through carbonization and the trends in the morphological changes and impact was studied on natural rubber vulcanisates in solving the problem of seeking for more cost effective materials for most applications than conventional materials such as wood, steel, or concrete in terms of life cycle costs. Carbonization was effected at varying temperatures of 300, 400, 500, 600, and 700°C for three hours each in order to improve on mechanical properties. The treated and raw fillers were ground and passed through 100Î¼m sieve. Scanning Electron Microscopy (SEM) was conducted on the carbonized fillers to trace modification trends. Other confirmatory evaluative measures of mechanical properties such as hardness, abrasion resistance, compressive strength, tensile strength and flexural strength were made on the composites. Scanning Electron monographs analyses clearly showed finer and cleaner particle aggregates with increase in carbonization temperature of the Coconut fibre. The finer aggregates bonded more strongly with the natural rubber matrix and hence provided a clear confirmatory indication of an improvement obtained in the mechanical and sorption properties of the composites with carbonized Coconut fibre up to 600 °C. Results achieved are significant at making scientific attempts at seeking alternative methods of natural rubber reinforcements through appropriate morphological re-orientations. The results show the potential of modified coconut fibre in reinforced composites as an alternative material for aerospace, transportation, construction, electrical/electronic devices and corrosion-resistant equipments.
Source: Journal of Emerging Trends in Engineering and Applied Sciences 7, pp 173 –178 (2016)More Less
The automatic detection of early stage malignant melanoma will give potential hope for diagnosis for melanoma skin cancer. This paper will also find a new method to analyse skin lesion images and this can enhance the dermatology department. Melanoma is the most dangerous form of skin cancer, accurate diagnosis is required to control the disease. So, the chances of false detection due to human error are high in a large population to be screened due to high workload on dermatologist and the objectivity in the interpretation of the screening which in turn can lead to fatal condition. The accurate and timely diagnosis of melanoma infection is essential to control and cure the disease. This study aims to explore the possibility of computerised diagnosis of early-stage malignant melanoma and to develop a novel image processing algorithm to reliably detect the presence melanoma from a sample skin image. Some image processing algorithms to automate the diagnosis of early stage melanoma on the skin are developed. This study curbs the human error while detecting the presence of early stage melanoma on the skin using image processing and automation. We achieved this goal using Image Segmentation and Morphological features descriptors. We also built the system in a robust manner so that it is unaffected by the exceptional conditions and achieved high percentage of sensitivity, specificity, positive prediction and negative prediction results.
Source: Journal of Emerging Trends in Engineering and Applied Sciences 7, pp 179 –185 (2016)More Less
While it is significant to note that fueling and gas station sandwiched in-between residential building could lead to possible fire outbreak, loss of lives and property, an assessment of air quality in the Oleh Community, Isoko South local government area in the Niger Delta Area of Nigeria were examined and finding revealed that air quality in the area is affected to varying degrees by human and natural activities. Results indicate that CO, VOC, CO2 SOX, NOX and suspended particulate matter values for the four location sites were below acceptable values for ambient conditions at most of the locations. Data's from this study reveals that the concentration of the SO2 ranges between 0.202ppm to 3.55ppm; The oxide of nitrogen (NO2) has concentration of <0.001ppm; Carbon monoxide (CO) ranges of 0.921ppm to 2.235ppm; Data's from the study reveals that the different sampling locations in the community had CO2 values that range between 73.000ppm to 125.000ppm; VOCs range from 1.400µgm-3 to 2.5/66µgm-3; Suspended particulate matter range from 15.700µgm-3 to 26.500µgm-3. Field observation shows that common sources of air pollution within the Oleh community are gas flaring, bush burning, combustion of bones, plastics, rubber edging for wheels, among others thus, emitting many health's damaging pollutants. Though, results from this study reveals that the concentrations of CO, VOC, CO2 SOX, NOX and suspended particulate matter for the four location sites in the Oleh community were within stipulated standards such as the World Health Organization's (WHO's) Guidelines and are therefore safe for human health. As the Isoko communities are racing toward urbanization, government, cooperate bodies and other stake holders should partner to educate the masses to limit the amount of pollutant released into the atmosphere. Further study is thus encouraged to attempt to establish a gradient between ambient air quality and indoor air quality cutting across urban and sub-urban cities in Nigeria.