Volume 6, Issue 6, June 2018 Edition - GSJ Journal Publication



DESIGN AND CONSTRUCTION OF REMOTE CONTROL AUTOMATIC MAINS FAILURE (AMF) SWITCH []


The need for continuous power supply and its reliability has increased rapidly over the years as most human activities solely depend on electricity, especially in some areas where uninterrupted power supply is a must. Interruption of power supply has adverse effects on the consumers of the electricity and consequently their equipment are liable to damage, with operations and processes halted as commonly noticed in developing countries like Nigeria. In this paper, a remote control automatic mains failure switch is designed and constructed for a 3-phase, 4-wire electrical/electronic equipment. It provides a switching mechanism that transfers the consumer loads from utility supply to a power source from a generator in the event of power failure in the utility/public mains supply. Phase detectors were used to monitor the lines of the mains supply and a relay based system was used to actualize the control actions. The remote control unit integrated into the system ensures savings of an average of 12% unnecessary expense monthly from non-critical use of generator as it allows the generator to be switched on remotely when occasioned with the absence of any or all of the phases in the public mains supply. In addition to this, it ensures continuous supply to the loads with operators having the ability to exert control the supply system at any time from a distance of 100 meters.


FIGHTING SOCIAL TERRORISM THROUGH CYBER SECURITY []


Terrorism is a major problem of the world today. Terrorism has affected government policies, inflicted injuries on men and women and caused physical damages to both people and infrastructure across the world. Computer, networks, electronic and other resources are usually the prime targets of suchterrorist attacks. This paper highlights existing cyber threats, discover efficient techniques for handling them and spread the awareness of such discovered information. A detailed study of information from secondary sources which includes the rich content of the internet and physical libraries were used to reveal that terrorist groups take advantage of certain anonymity provided by the internet especially through the social media platforms to perpetrate their evil intentions. The revelation arms individuals, organizations and government agencies with the strategy to adequately prepare to address all their security deficiencies while on the internet and thereby enhances their, safety, productivity and overall preformance both in business, government and family life.


THE CONTRIBUTION OF FISHERIES SECTOR IN RE-GIONAL DEVELOPMENT OF BOGOR REGENCY WEST JAVA PROVINCE []


The purpose of this research is to analyze the growth of fisheries sector, the strength of the commodities market and the strength of the fishery sector base and non-fishery base in the regional development of Bogor regency. The writer uses quantitative research method to answer the problem formulation and is using secondary data that is cross section and time series which further analyzed using descriptive statistics. The data analysis covers the analysis of Growth Indices, Trade Area Capture (TAC) and the Pull Factor (PF) analysis and Minimum Requirement Approach (MRA) analysis. The results of the Growth Indices analysis show the GRDP growth of the fisheries sector in Bogor regency increased 65% within two years. The average results of the TAC analysis in 2014 - 2016 demonstrating the value of TAC is greater than the total population (5.785.671 > 5.459.402) so it can be inferred that Bogor regency is able to capturing trade opportunities of other regional fishery products and Bogor regency society has a pattern of expenditure against fishery products that are larger than the province of West Java. While the average results of PF analysis shows the value of PF amounted to 1,06 so it can be inferred that Bogor regency is able to attract customers from other regions and has specialized in terms of fishery products market. The results of the MRA analysis in Bogor regency earned a base multiplier of 6.395,8 which mean each 6.395 of the labor created by sector base will produce 0,8 the labor in sector non base. Or for every 6.395 of the labor in sector base is expected will be created 8 labor in the sector non base.


ATTENTION DETECTION OF THE DRIVER TO ENSURE SAFE DRIVING []


In this paper, we have tried to detect the focus of attention of the driver from his/her head movement and orientation of pupil detection. If the driver changes his/her gaze, the corresponding coordinate of pupil also changes. The frontal view of the person is divided into three regions corresponding to three target objects and the gaze directions are detected based on in which region the coordinate of pupil is located in the eye area. In our technique we have used a camera to capture video frames of the target person. The frames are converted into grey image and processed pixel by pixel. A 3D head tracker is used to extract the facial regions from the image. From the facial regions face points and eye regions are detected. Using a Vector Field of Image Gradient (VFIG), the pupil of eye is detected. In our ap-proach, we have used the face points to create a rectangle outside of the eyes to detect the gaze of driver by applying different techniques under different lighting conditions and different distances from the camera. For non-frontal face, sometimes situation arises when we cannot detect the pupils efficiently. In this case, we have used the head orientation for gaze detection. The head rectangle has been divided into three regions. We estimate the gaze based on which region the middle of the head falls with varying head rotation time. To ensure a safe driving we need to detect sustained as well as transient attention very carefully and efficiently. To detect the body movement, we have used the optical flow feature and verified this approach in controlled environment. Our result in controlled and real time experiments reveal that, we can efficiently track the focus of attention of the driver from the coordinate of the pupil of the eye combining with head position and consequently we can detect the sustained attention together with transients very effectively and control the attention by deploying an alarming system if inattention is detected.


PERFORMANCE ANALYSIS OF GAS TURBINE POWER PLANT(A CASE STUDY OF DELTA III GT9 TRANSCORP GAS TURBINE POWER PLANT, UGHELLI, NIGERIA) []


This research work is focused on the analysis and performance evaluation of a gas turbine power plant. The gas turbine power plant was evaluated using thermodynamic principles and the technical data of the plant. The data used for the study were obtained from the plant records of Delta III GT9 plant. The results of the analysis for a period of twelve (12) months (January to December, 2016) show that 92% of the expected capacity was available in the period under study. The thermal efficiency of the plant ranged from 26% to 32%, and the plant's capacity factors ranged from 68% to 80%. The reliability of the plant ranged from 21% to 98% (average 58%). For the period under study, only 20 MW of energy (power) was lost out of the expected power of 240 MW. The study revealed that the above performance parameters analyzed for Delta III GT9 plant are within the range of best industrial practice. Also, the efficiencies achieved for the period under study are within the best international value for a single cycle gas turbine plant.


EFFECTIVINESS OF FACTS DEVICES FOR THE CONTROL OF POWER SYSTEM TRANSIENT STABILITY USING DIFFERENT INTELLINGENT TECHNIQUES []


This paper is aimed towards the benefits of utilizing flexible Alternating current transmission system (FACTS) devices using different intelligent techniques with the purpose of improving the operation of an electrical power system. Voltage instability is considered as a main threat to stability, security and reliability in the modern power systems. The application of FACTS controllers has been for the purpose of maximizing the lines conductivity given the restrictions involved, including the issue of stability. The main causes of voltage instability and solutions have been reviewed [29]. Hence, effectiveness of the proposed techniques employed is robust to different operating conditions and disturbances. Performance comparison of different FACTS devices has been discussed. Semiconductor technology development and utility experience have been reviewed and summarized. The used and installation of FACTS devices on the power transmission lines has been discussed. This survey article will be very much useful to the researchers for finding out the relevant references in the field of voltage stability enhancement by using FACTS devices in power transmission system.