Volume:4 Issue:10 Oct ' 2018
||MODELING MONTHLY RELATIVE HUMIDITY OF IMO AND ENUGU STATES FOR EVAPOTRANSPIRATION ESTIMATION
Iwuchukwu, E.I , Asoegwu, S.N , Okereke, N.A.A.
MODELING MONTHLY RELATIVE HUMIDITY OF IMO AND ENUGU STATES FOR EVAPOTRANSPIRATION ESTIMATION
Monthly Relative humidity (RH) models for Enugu and Imo States were developed using statistical analysis (SPSS) based on stepwise method. In this study, the independent variables: sunshine hours, minimum temperature, maximum temperature, rainfall and vapour pressure and the dependent variable (monthly relative humidity) were obtained from Nigeria Meteorological Agency (NIMET) for the years 1991 to 2010. High coefficients of determination R2 = 0.845 and 0.753 for estimating monthly relative humidity for Enugu and Imo respectively were obtained during model building. The error margin for RH model for Enugu state used in Blaney-Morin-Nigeria(BMN) gave 0.0295 – 0.1864 whereas the error margin for RH model for Imo state used in BMN gave 0.0312 – 0.1322. By applying the developed monthly relative humidity in Blaney-Morin Nigeria model to estimate the monthly evapotranspiration from 1991 to 2010 gave a high significant difference. These results are clear evidence of the test of goodness of fit of the models between predicted and measured parameters for monthly relative humidity for Imo and Enugu states.
||DESIGN AND IMPLEMENTATION OF VEHICULAR HORN CURRENT LIMITER
Dr.S.R.Ruckmani , Theepashree Sellappan.
DESIGN AND IMPLEMENTATION OF VEHICULAR HORN CURRENT LIMITER
The fault diagnosis of horns is greater importance in production lines. It significantly reduces the risk of unexpected failure by early detection of faults. It is important to identify the fault and rectify the failure. It is identified that most of the horn failures are caused by the high current flowing through the circuit. Thus, the effective installation of horns based on the current capacity of the vehicle can significantly reduce the failure of horns, so an effective and cost effective current limiter circuit has been proposed.