Emmanuel Abiodun - Academia.edu (original) (raw)

Papers by Emmanuel Abiodun

ABSRACT : The application of Predicted Mean Vote (PMV) and Predicted Percentage Dissatisfied (PPD... more ABSRACT : The application of Predicted Mean Vote (PMV) and Predicted Percentage Dissatisfied (PPD) indices for thermal comfort quality assessment in naturally ventilated (NV) buildings in warm-humid climate has been observed to lead to overestimation of occupants` comfort and dissatisfaction levels. The thermal comfort quality in a naturally ventilated hostel located in Obafemi Awolowo University, Ile-Ife was determined using PMV and PPD indices. The measured indoor air temperature and relative humidity were 28.1-34 o C and 30.8%-75.5%. The subjective assessments showed that more than 80% of the respondents were comfortable (PD ˂ 20%) while the PPD index predicted that 58% of the occupants were not comfortable. The calculated PMV index on the average was +1.63. There was no correspondence between the thermal conditions predicted by PMV-PPD index and actual comfort vote. Fanger`s PMV-PPD model cannot be used to predict indoor climate in the study area as it overestimated occupants` c...

Radio-frequency Radiation (RFR) exposure of the developing fetus and children has risen to be of ... more Radio-frequency Radiation (RFR) exposure of the developing fetus and children has risen to be of tremendous health concern, with the utilization of wireless technologies being on the high side among reproductive group. Recent studies have reported harmful effects of RFR exposure on developing fetus. The aim of the present study was to investigate the effects of exposure to 2.45 GHz RFR prenatal exposure on ovarian follicle reservoir of first filial generation (F1) of albino rats. Six pregnant rats were equally divided into an experimental Exposed Group (EG) and unexposed Control Group (CG). The rats were confined in Electromagnetic Field (EMF) cages designed for this study. An Access Point (AP), consisting of a portable radio (2.45 GHz picostation by Ubiquiti Networks, USA, with its integrated omni-directional antenna) serving as RFR source was placed inside the EG cage in close proximity (15 cm) to the pregnant rats. One hour daily exposure to 2.45 GHz RFR on days 13 to 21 of pregn...

Advances in land surveying technology and instrumentation now make it possible for less qualified... more Advances in land surveying technology and instrumentation now make it possible for less qualified surveyors to produce maps and determine positions with relative ease. The professional surveyor, whose career has been the production of maps at varying scales and accuracies, now faces real challenges in keeping abreast with the technological advances. Surveyors in Nigeria are burdened by: ≠ new and changing user demand for products in varying formats, ≠ inadequate knowledge to explore or venture into new and emerging areas of opportunities, ≠ diminishing career opportunities. Although new and emerging technological innovations are creating new opportunities for surveyors many feel unprepared to explore or to venture into these new technologies. To reverse the trend, a committee from the Department of Surveying & Geoinformatics at the University of Lagos in Nigeria, was set up to analyze the problem and recommend remedial actions. The committee identified, among other things, that the ...

Effects of radiofrequency radiation (RFR) on human health have grown to be of serious health conc... more Effects of radiofrequency radiation (RFR) on human health have grown to be of serious health concern, with the entry into daily life of RFR emitting devices such as wireless fidelity, cell phones, masts, radio and television transmitters. Recent studies have reported that RFR exposure particularly during gestation affects the developing fetus. This has been attributed to oxidative stress caused by RFR exposure The aim of the present study was to examine the effects of 2.45 GHz RFR prenatal exposure on semen parameters of the first filial generation (F1) of albino rats. Six pregnant albino rats were equally divided into an unexposed control group (CG) and an experimental exposed group (EG). The rats were confined in Electromagnetic Field (EMF) cages specially designed for this study. An Access Point (AP), consisting of a portable radio (2.45 GHz picostation by Ubiquiti Networks, USA, with its integrated omni-directional antenna) serving as RFR source was placed inside the EG cage in ...

1 Department of Building, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria. eolanipe@oaui... more 1 Department of Building, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria. eolanipe@oauife.edu.ng Department of Building, Federal University of Technology, Akure, Ondo State, Nigeria. sirss4prof@gmail.com Abstract University subsector is one of the fastest-growing electricity consumers in Nigeria and is known to have significant impacts on Nigeria energy mix. Various electricity conservation measures have been adopted for improving efficient electricity use but in terms of sustainability, little success has been achieved due to inability to tackle some barriers. Exploring CSFs has been identified as one of the surest ways of removing barriers towards meeting sustainable efficient energy management and savings in HEIs. Focusing on the importance of practicing energy management effectively, this study developed a set of critical success factors for implementing electricity management in university subsector with emphasis on sustainability. Data for the study were collected fr...

Iconic Research And Engineering Journals, 2018

Notice board is primary thing in any institution or organization or public utility places like bu... more Notice board is primary thing in any institution or organization or public utility places like bus stops, railway stations or parks. But sending various notices day to day is a tedious process. This paper deals with advanced notice board. It presents an SMS based notice board incorporating microcontroller PIC18F2550. A GSM module SIM 800L is interfaced to the ports of the microcontroller PIC18F2550. When the user sends a SMS via a registered number from his mobile phone, it is received by a SIM loaded GSM modem at the receiver unit. The GSM modem is interface to the control unit to receive messages from the user. The message received is sent to the microcontroller that further displays it on electronic notice board which is equipped with a display unit interfaced to a microcontroller. It is further displayed on an electronic notice board which equipped with 7 X 5 (5 Segment Display) light emitting diodes display interfaced to the dot matrix controller which converts instructions fro...

Building performance is a function of a number of variables each of which is important to analyse... more Building performance is a function of a number of variables each of which is important to analyse concurrently when conducting a POE study. The development of framework for assessing buildings is significant as it will provide an evaluation tool for ensuring sustainable buildings. This study developed an index for evaluating the overall performance of office buildings in Nigeria. A Total of 51 professionals in the built environment were surveyed. The data obtained were analysed using content analysis technique, pair wise comparison (one sample t-test) and regression analysis. The results showed that; the performance criteria which are pertinent to the performance of office building in order of their importance were building integrity (54.54), indoor air quality (53.69), safety and security (64.04), thermal (46.77), spatial (7.27%), visual (44.01), spatial (43.33) and acoustic performance (43.62); priority placed by individual professional, architects rated safety and security and bu...

IOSR Journal of Humanities and Social Science, 2014

The study was carried out to investigate the effects of macroeconomic and banking sector-specific... more The study was carried out to investigate the effects of macroeconomic and banking sector-specific variables on domestic currency deposits in Nigeria within a temporal scope 2000-2018. On the theoretical threshold of Ayodeji-Ajala bank-intermediation (economic value) theorem, the study proxied the dependent variable, domestic currency deposit, by total domestic currency deposit of banks, and the independent variable, deposit determinants, by three macroeconomic variables (interest rate, gross domestic product, inflation) and two banking sector-specific variables (private sector credit and bank size). Secondary data were sourced from the Central Bank of Nigeria statistical bulletin of various editions, and were estimated using Auto Regressive Distributed Lag (ARDL) approach. It was found that, while interest rates exhibited insignificant negative effects on domestic currency deposits in Nigeria, inflation rate exerted significant negative effect on it, and gross domestic product exert...

FUOYE Journal of Engineering and Technology

This paper provides performance evaluation of Genetic Algorithm and Simulated Annealing in view o... more This paper provides performance evaluation of Genetic Algorithm and Simulated Annealing in view of their software complexity and Simulation runtime. Kirkman Schoolgirl is about arranging fifteen schoolgirls into five triplets in a week with a distinct constraint of no two schoolgirl must walk together in a week. The developed model was simulated using Matlab version R2015a. The performance evaluation of both Genetic algorithm and Simulated Annealing was carried out in terms of program size, program volume, program effort and the intelligent content of the program. The results obtained show that the runtime for GA and SA are 11.23sec and 6.20sec respectively. The program size for GA and SA are 2.01kb and 2.21kb, respectively. The lines of code for GA and SA are 324 and 404, respectively. The program volume for GA and SA are 1121.58 and 3127.92, respectively. The program effort for GA and SA are 135021.70 and 30633.26 respectively, while the intelligent content of the program for GA a...

International Journal for Equity in Health

IRJCS:: AM Publications,India, 2020

The Nurse scheduling problem (NSP) represents a difficult class of Multi-objective optimization p... more The Nurse scheduling problem (NSP) represents a difficult class of Multi-objective optimization problems consisting of number of interfering objectives between the hospitals and individual nurses. Several constraint-based optimization techniques have been proposed to solve automated nursing scheduling problems in an acceptable computation time but most of these techniques are characterized by premature convergences which inhibit optimal global solution. Thus, a Modified Genetic Algorithm (MGA) was developed to solve Nurse Scheduling Problem. The Modified Genetic Algorithm will be implemented by using Matrix Laboratory (MATLAB) software.

Geoinformatics FCE CTU

The aim of this research is to establish the significant effect of environmental factors on malar... more The aim of this research is to establish the significant effect of environmental factors on malaria prevalence rate within the Local Government Areas of Lagos State. The methodology used was to carry out a statistical analysis of these various environmental factors with the malaria prevalence cases that was recorded in Lagos State using a 5 years data from 2009-2013 of malaria prevalence cases recorded with environmental data for the same time frame, and to further use GIS to show the various Local Government Areas with high severe malaria cases as well as low malaria cases. The result obtained from this analysis shows a significant relationship between the malaria prevalence cases and environmental factors of rainfall, temperature and relative humidity, this helped in developing a predictive model. The outcome from this research work can help the government, Lagos State Ministry of Health and donor agencies both local and international see the Local Government Areas within the stat...

For over two decades, groundwater has been the dominant source of drinking water in Nigeria. Desp... more For over two decades, groundwater has been the dominant source of drinking water in Nigeria. Despite the reported radiological risk associated with the exposure to radon and its progenies, the level of awareness of the presence of this carcinogenic radioisotope in drinking water in Nigeria is low. Water from underground sources is consumed and used for other various household activities without prior treatment, thereby may serve as a radiation source of concern if the concentration of radon in such water is high. A total of 112 samples of groundwater in areas of elevated background radiation level in some cities and towns in southwestern Nigeria were collected and assayed for the radon (222Rn) concentration. The measurement was carried out using RAD7 (DURRIDGE Company Inc., USA). The result revealed a steady trend of variation in the concentration of 222Rn in water samples from different sources. Highest concentration was found in water from borehole sources. The concentration of ra...

Global Journal of Human Social Science Research, Dec 7, 2014

Advances in Data, Methods, Models and Their Applications in Geoscience, 2011