Developing a Crime Mapping GIS System For Law Enforcement: A Case Study of Owerri Metropolis, Nigeria

Abstract: This paper examines the use of GIS in the development of a crime analysis information system for the Nigeria police. In recent times, criminality has been on the increase with criminals using new and more sophisticated ways to commit crime; resulting to fear and restlessness among the citizens. They police have found it difficult to manage and control these crimes largely due to the obsolete methods and resources they employ in doing so. The purpose of this study is to see how the Nigerian Police Force can adopt the use of crime maps in its operations and reap the benefits. The system will help the police in the analysis of crimes which will lead to crime hotspots identification. Using ArcGIS Software 10.0, we created a digital land use map of crime hotspots in the area and a crime-geospatial database. The results of the spatial analysis and a 500m buffering done on the data shows that areas that are more vulnerable to crime, have no police stations situated around them. This study shows that a GIS based Information system will give the police better insights into crime mapping and analysis which will be a tool to help them effectively manage and combat crime. This study recommends full government involvement in the area of human personnel and infrastructure development for the police to effectively change from the traditional to GIS based ways of combating crime

Performance Evaluation of WCDMA Networks in Selected Geolocations Using Structured Questionnaire and Empirical Analysis Methods

High influx in the number of cellular subscribers is observed to be one of the constraints to incessant poor network  performance which results to increased congestion challenges. This work is attributed towards executing network performance evaluation to ascertain the levels of degradation on the WCDMA networks from selected geographical locations in Owerri, the capital city of Imo State, Nigeria. The methods adopted are structured questionnaire and empirical analysis. Structured questionnaires were administered to survey 250 customers from the two (2) major and dominant network providers in Owerri metropolis: MTN and AIRTEL, on their Quality of Service (QoS) delivery and to determine their network satisfactory performance rates. Empirical analyses were conducted on the two networks to evaluate their network performances using the selected Key Performance Indicators (KPIs). Aba road, FUTO road, Onitsha road, Orlu road and Wetheral road were selected for the analysis owing to the high density of the network subscribers within these regions. The Selected KPIs which include Call Drop Rate (CDR), Call Setup Success Rate (CSSR), Call Completion Success Rate (CCSR), network accessibility, network retainaibility and Receive Signal Level (RXLEV) were deployed to evaluate the various performance characteristics of the networks based on the QoS. From the result assessments, none of the networks met the Nigeria Communication Commission (NCC) thresholds based on the KPIs selected except for MTN network along FUTO, Wetheral and Onitsha roads marginally agreed with the NCC target value on CCSR. Also MTN network along Onitsha road slightly met the NCC target value on CSSR and network accessibility