Blagoj Delipetrev

Development of a web application for water resources based on open source software

This article presents research and development of a prototype web application for water resources using latest advancements in Information and Communication Technologies (ICT), open source software and web GIS. The web application has three web services for: (1) managing, presenting and storing of geospatial data, (2) support of water resources modeling and (3) water resources optimization. The web application is developed using several programming languages (PhP, Ajax, JavaScript, Java), libraries (OpenLayers, JQuery) and open source software components (GeoServer, PostgreSQL, PostGIS). The presented web application has several main advantages: it is available all the time, it is accessible from everywhere, it creates a real time multi-user collaboration platform, the programing languages code and components are interoperable and designed to work in a distributed computer environment, it is flexible for adding additional components and services and, it is scalable depending on the workload. The application was successfully tested on a case study with concurrent multi-users access.

Collaborative Cloud Computing Application for Water Resources Based on Open Source Software

This article presents research and development of a collaboration cloud computing application for water resources based on open source software. The cloud computing application is using a hybrid deployment model of public – private cloud, running on two separate virtual machines (VMs). The first one (VM1) is running on Amazon web services (AWS) and the second one (VM2) is running on a Xen cloud platform. The collaborative cloud application has four web services for 1) data infrastructure (DI), 2) support for water resources modelling (WRM), 3) user management and 4) water resources optimization (WRO). The most important characteristic of the cloud application is a real-time geo-collaboration platform supporting multiple users. This research shows the capability to scale and distribute the cloud application between several VMs. The cloud application was successfully tested in the Zletovica case study in a distributed computer environment with concurred multiple access.