WebDSL: Linguistic Abstractions for Web Programming

Information systems store and organize data, and manage business processes concerned with that data. Information systems aim to support operations, management and decision-making in organizations. Web applications are ideal for implementing information systems. Although existing web frameworks provide abstractions for creating web applications,...

Classification-Based Opinion Formation Model Embedding Agents’ Psychological Traits

We propose an agent-based opinion formation model characterised by a two-fold novelty. First, we realistically assume that each agent cannot measure the opinion of its neighbours about a given statement with infinite resolution and accuracy, and hence it can only perceive the opinion of others as agreeing much more, or more, or comparably, or...

Data validation and data quality assessment

Once data have been recorded, data validation procedures have to be conducted to assess the quality of the data, i.e. give a confidence grade. Furthermore, gaps may occur in time series and, depending on the purposes, these can be given values by application of e.g. interpolation. Since both aspects are strongly correlated, this chapter gives an...

Experimental design for evaluating WWTP data by linear mass balances

A stepwise experimental design procedure to obtain reliable data from wastewater treatment plants (WWTPs) was developed. The proposed procedure aims at determining sets of additional measurements (besides available ones) that guarantee the identifiability of key process variables, which means that their value can be calculated from other,...

Legal Independence, Modularity and Implementation of LADM using INTERLIS – Case Study of the Colombian ISO 19152 Profile

The new Multipurpose Cadaster of Colombia defines, as a standard to achieve data interoperability, the ISO 19152 (LADM). The Project “Modernization of Land Administration in Colombia”, funded by the Swiss Economic Cooperation (SECO), has supported the governing bodies in developing a Colombian profile of the norm (LADM-COL). This profile follows...

Validation of geographical datasets against spatial constraints at conceptual level

A huge amount of geographical datasets are becoming available in distributed environments like Spatial Data Infrastructures (SDI). These datasets are very heterogeneous since they come from different independent sources and surveys and are structured in different formats. In the context of a national SDI that needs to assure an adequate quality...

Integration of data validation and user interface concerns in a DSL for web applications

Data validation rules constitute the constraints that data input and processing must adhere to in addition to the structural constraints imposed by a data model. Web modeling tools do not make all types of data validation explicit in their models, hampering full code generation and model expressivity. Web application frameworks do not offer a...