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26:05 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

An Open Source Approach to Multi-user Distributed Geospatial Data Management

Open source tools have been successful in managing geospatial data in central data stores. However, performance issues can arise from many users accessing the same table in a geospatial database at once, especially in a multi-user editing environment. The geospatial landscape also changes constantly, as a result of human activity and natural forces, this gives a need to track these changes within the geospatial database and perform change detection activities to understand changes across time, hence a need to version history. These use cases springs up the requirements to employ a data distribution across multiple geospatial databases using versioning and replication technology to integrate several desktop and mobile user applications into an adaptive geospatial communications environment connecting operations across the enterprise and throughout the organisations to improve data availability to multiple users, tracking change history within multiple table versions while increasing system performance. Several commercial geospatial applications have successfully implemented full versioning replication capabilities by leveraging middleware with the core database versioning capabilities – for example ArcSDE technology from Esri . The realization of a full solution has been far-fetched on open source geospatial applications. This presentation discusses the development of QGIS plugin and implementation of FOSS4G solutions for versioning and replication capabilities with to support multi-user access while optimizing performance using QGIS, PostgreSQL, PostGIS and SpatialLite DB technologies.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
29:50 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Optimizing Last mile Vaccine Supply Chain in Northern Nigeria using FOSS4G Solutions

In 2012, the Federal Government of Nigeria launched the Saving One Million Lives Initiative aimed at expanding routine immunization to 87% coverage that will protect over 6 million children against vaccine preventable diseases such as measles, meningitis, polio, tetanus, hepatitis, yellow fever and tuberculosis . In 2013, the GAVI Alliance approved US 21 million to help improve vaccine supply chains . Despite several innovations and initiatives to optimize the supply chain and storage of health commodities in Nigeria, there are still known gaps in the supply chain in the health sector in Nigeria. Achieving a good coverage of routine immunization is almost impossible without the optimization of last mile delivery – especially in the hardest-to-reach places of Nigeria. Geographic Information science (GIS) techniques play a big role in the design and optimization of last mile delivery of vaccines down to Local Government Areas and health facilities in remote places. This presentation discusses how eHealth Africa has implemented FOSS4G solutions to enhance an effective vaccine delivery system in Kano State, Nigeria; the second most populated state in Nigeria using open source tools like OpenDataKit, QGIS, JOSM, OSRM. We also discuss the importance of OpenStreetMap and open data to replicating this in other countries.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
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