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 state that are most vulnerable to malaria epidemic, and further aid them in policy formation, planning and strategy implementation.

No abstract

Urban expansion has been identified as a major cause of global climatic and environmental changes. Accurate and up-to-date information about urban expansion in terms of the drivers responsible for this expansion are important for long term planning and sustainable urban development. Lagos is one of the cities that have undergone rapid urban enlargement in the last few decades and, many factors have been adduced to contribute to its sprawling. Therefore, this study aims at using the Principal Component Analysis (PCA) for identifying the principal drivers of urban expansion in greater Lagos. In this study, a set of fourteen (14) drivers of expansion are considered in a multinucleic structure. A sequence of Landsat images of the study area for 1984, 2001, 2006 and 2013 was acquired and processed to six land use classes: dense, moderate urban, water, vegetation, wetland and mangrove. The study area was partitioned into 25 regular cells of 20km by 25km each from where proximate driver values were obtained. The effectiveness of each driver was tested using PCA. The results show that Land Availability accounted for 37.836% of total variance. This result of this study may form the basis for a renewed attention on land policy in the study area as a way to enhance sustainable development.

Information management has become a very important topic in recent times and technological advancement depends more and more on the amount of information that is available in real time. As the popular saying goes information is power. This is why investment in the information networking of an economy cannot be over flogged. Great nations of today are characterized by the amount of information they harness and how well and efficient this information is being dispersed to its citizens. GIS (Geographic Information System) is of great importance in accomplishing modern day task of information management. This project is focused on the direct application GIS is proffering solutions to telecommunications masts distribution, the spread and their locations. For this study, two major telecoms companies in Lagos were chosen for consideration and analysis in other to appreciate the lapses and the short comings of the present spread and the need for a spatial adjustment. Also given the ongoing Federal Government proposed policy on mast stations networking by all telecom companies, we shall achieve maximum output, reduced cost of service and increase in the efficiency of the telecoms companies to all the customers. Geographic information System (GIS) as a tool enables telecommunication professionals to integrate maps and information for better decision making, from planning and maintenance of infrastructure to administering of mobile telephone coverage, managing existing customers and finding of new ones. In all these GIS Users rely on location based data to proffer solutions. The methodology employed for this project is data acquisition, data storage, data manipulation and data presentation. Analyses of the results obtained shows the spatial distribution of the masts around Lagos state and highlights the different logical paths the GIS can be queried to achieve the required results. This study has provided a Geospatial analysis of Mast Management distribution and Telecommunication Service in Lagos State.

Comparison of orthometric heights obtained from the combination of GPS/Levelling survey method with that obtained from Lidar, Srtm, and Astergdem data is an area of research which is of great interest to Geomaticians. This area of research makes possible the discovery of other suitable methods of determining orthometric height which can be selected for use depending on the region, extent and nature of the terrain where the project is to be executed.<p style="-qt-block-indent: 0; text-indent: 0px; margin: 0px;">The X, Y, Z coordinates and the geoidal heights for all the existing controls within university of Lagos were determined using the GPS/ Levelling survey method, the required orthometric height (H) was then obtained as the differences between ellipsoidal and geoidal heights. Extracting orthometric heights for the X and Y coordinates of observed control points overlaid on each of Lidar, Srtm and Astergdem required the use of spatial analysis tool in an arc map environment. From the profile plot (Figure 3.5) of all the orthometric heights, the heights relationship was easy established. From the descriptive statistics test (Table 3.4), the one way ANOVAs test at 1% and 5% level of significance (Table 3.8), the number of points in other methods whose orthometric height is closed to that of Levelling/GPS method (Table 3.7) and correlation test on the various orthometric heights obtained (Table 3.5) it is obvious that all the applied methods operates at different spatial resolutions, of all the four methods, GPS/Levelling method was the most reliable and most accurate method followed by lidar method, then by astergdem method and Srtm has the least. In a nutshell, Orthometric heights generated by method of Lidar are very close to that generated by GPS/Levelling method at several stations, thus method of Lidar was considered as the most suitable alternative to GPS/Levelling method, whenever the use of later method cannot be easily accomplished.</p><p style="-qt-block-indent: 0; text-indent: 0px; margin: 0px;"> </p>