Publications

I’ve put abstracts of publications I’ve made in the past few years. To download the conference proceedings, please follow the link given at the end of each abstract.

01: Emmanuel Bobb Anya Lansana (2011)Hosting and Sharing Your GIS Data – To Pay or Not To PayA paper presentation at the 4th Applied Geoinformatics for Society and Environment; International Summer School and Conference, Nairobi.

ABSTRACT: The significance of GIS in managing both spatial and non-spatial information cannot be overstated. Moreover, its integration with the Internet has now made it even worthier than ever before. However, gathering all the information needed for one’s business solution into a central storage system where it can be effectively managed and shared with others within and outside an organization often has its own challenges – primarily cost! The cost of investment in software for warehousing and sharing GIS data might have either discouraged your institution from maintaining a manageable system or left you wandering whether you’ll cope with the growing cost in subsequent years. Whichever the case, there is a great opportunity waiting to be explored – Open Source. This presentation will therefore focus on Free and Open Source Software (FOSS) for Enterprise GIS solutions. FOSS integration offers a lot of gain without any pain – great savings without compromising the quality of service to clients. The presentation will last for 30 minutes.

Since understanding comes by doing, the presentation will be followed by a workshop. The workshop will work attendees through 45 painless minutes of implementing a complete Enterprise GIS solution using mainly FOSS. It will begin with developing a spatial database with PostgreSQL/PostGIS, through configuring GeoServer for OGC Services (like WMS and WFS) to authoring interactive client maps using OpenLayers+GeoExt. At the end of the presentation and workshop, it is hoped that attendees will decide ‘not to pay’ those huge sums anymore for software applications that make little or no difference.

Click here to download the AGSE2011 conference proceedings.


02: Emmanuel Bobb Anya Lansana  (2011)Implementing OGC Conformant Web Services using PostGIS and GeoServer” A workshop lecture delivered at the 4th Applied Geoinformatics for Society and Environment; International Summer School and Conference, Nairobi [July 2011]

ABSTRACT: Since the process of collecting large amount of GIS data can be critical, expensive, demanding and require great care, data administrators are now more concerned about efficient storage of geospatial data. However, data simply stored on desktop computers has limited sharing capabilities and is difficult to manage efficiently. For this reason, server platforms are being adopted since they provide better data management capabilities, security, credibility and, above all, promote collaboration between individuals and organizations. But putting together the right kind of tools can be expensive and challenging. This workshop is therefore designed to demonstrate how Free and Open Source Software (FOSS) applications can be harnessed in sharing GIS data in a secured and credible manner. The use of FOSS tools here does not only mean a low cost approach but one that strictly conforms to the Open Geospatial Consortium (OGC) Standards. In this workshop, three important things will be learned:

Firstly, we will learn how to configure and prepare the environment of a Database Server (PostgreSQL/PostGIS) to administer geospatial data, import data into the spatial database and take measures to maintain data integrity and security.

Secondly, we will learn how to import data from the spatial database into the GIS Server (GeoServer), stylize or symbolize the data layers and publish the layers to serve OGC conformant Web Services [Web Map Services (WMS) and Web Feature Services (WFS).

Lastly, consuming the published data in desktop GIS environment will be demonstrated.

Click here to download the AGSE2011 conference proceedings.


03: Emmanuel Bobb Anya Lansana, M. Abdullah Sohl, Franz-Josef Behr (2011)A conceptual Approach to Estimate Biomass using Airborne and Terrestrial LiDAR Data:- A paper presentation at the 4th Applied Geoinformatics for Society and Environment; International Summer School and Conference, Nairobi.

ABSTRACT: Accurate estimation of biomass is indispensible especially in urban environment. Remotely sensed LiDAR data provide the opportunity to measure key plant parameters such as tree height, crown diameter, and diameter at breast height (dbh). These parameters are further used to estimate the biomass. The main objective of the present study is to develop a procedure for estimating aboveground biomass of trees in urban environment using LiDAR data. More specific objectives included: measuring the tree parameters such as tree height, crown width or diameter, and diameter at breast height. In this study we like the ability of LP 360 software to extract the single trees from rest of the LiDAR point cloud and effortlessly measure the tree parameters, which is a tedious task in field surveys.

Click here to download the AGSE2011 conference proceedings.


04: Emmanuel Bobb Anya Lansana, M. Abdullah Sohl, Franz-Josef Behr (2010): “Developing a Community Forum using Ushahidi: A poster presentation at the 3rdApplied Geoinformatics for Society and Environment; International Summer School and Conference, Peru.

ABSTRACT: Ushahidi, a Swahili word meaning “Testimony”, was originally developed in 2008 by a group of developers in Kenya. The purpose was to map eye-witness reports of post-election violence after Kenya’s 2007 Presidential elections. Today, Ushahidi has gained dramatic attention for various forms of crisis mapping, election monitoring and several other web mapping applications. It provides a flexible way of information collection, visualization and interactive mapping. With Ushahidi, information collection is not limited to internet users; it can be synchronized with Frontline SMS to collect information from ordinary mobile phone users which can then be mapped. It can also be linked to other social networking sites like Facebook, Twitter, etc for larger crowd sourcing. Ushahidi is free and open source. The Haiti Crisis Map, Sudan Vote Monitor and Chile Crisis Map are just a few of recent implementations of Ushahidi. In this study project, the primary objective of implementing Ushahidi was to connect past and present members of the Stuttgart University of Applied Sciences.

Click here to download the AGSE2010 conference proceedings.

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