Say it in 51 bytes: LoRa for hydrological observations

Balancing Costs and Benefits in Selecting New Information: Efficient Monitoring Using Deterministic Hydro-economic Models

Uncertainty reduces reliability and performance of water system operations. A decision-maker can take action, accepting the present uncertainty and facing its risks, or reduce uncertainty by first obtaining additional information. Information, however, comes at a cost. The decision-maker must therefore efficiently use his/her resources,...

Advancing catchment hydrology to deal with predictions under change

Throughout its historical development, hydrology as an earth science, but especially as a problem-centred engineering discipline has largely relied (quite successfully) on the assumption of stationarity. This includes assuming time invariance of boundary conditions such as climate, system configurations such as land use, topography and...

Data compression to define information content of hydrological time series

When inferring models from hydrological data or calibrating hydrological models, we are interested in the information content of those data to quantify how much can potentially be learned from them. In this work we take a perspective from (algorithmic) information theory, (A)IT, to discuss some underlying issues regarding this question. In the...

HydroZIP: How hydrological knowledge can be used to improve compression of hydrological data

From algorithmic information theory, which connects the information content of a data set to the shortest computer program that can produce it, it is known that there are strong analogies between compression, knowledge, inference and prediction. The more we know about a data generating process, the better we can predict and compress the data. A...

Data compression to define information content of hydrological time series

When inferring models from hydrological data or calibrating hydrological models, we might be interested in the information content of those data to quantify how much can potentially be learned from them. In this work we take a perspective from (algorithmic) information theory (AIT) to discuss some underlying issues regarding this question. In...

Information Theory for Risk-based Water System Operation

Operational management of water resources needs predictions of future behavior of water systems, to anticipate shortage or excess of water in a timely manner. Because the natural systems that are part of the hydrological cycle are complex, the predictions inevitably are subject to considerable uncertainty. Still, definitive decisions about e.g....

Why hydrological predictions should be evaluated using information theory

Using the Wiimote as a sensor in water research

The $40 “Wiimote” (an input device belonging with the Nintendo® Wii™ game system) can be used by hydrologists as a sensor. The device contains three accelerometers and an infrared camera with built?in source tracking. It communicates by Bluetooth®. Because of the efforts of the hacking community it is now easy to let the Wiimote communicate with...

Sustainable innovation. In search for the value added configuration

The concept of sustainable innovation goes beyond realizing technical solutions. For innovation to be effective, knowledge that is developed during the innovating activity requires to be dispersed to assure benefit of the innovation in production, use, maintenance and disposal. Actually doing so might jeopardize an organization’s competitive...

Sustainable innovation: In Search for the Value Added Configuration

The concept of sustainable innovation goes beyond realizing technical solutions. For innovation to be effective, knowledge that is developed during the innovating activity requires to be dispersed to assure benefit of the innovation in production, use, maintenance and disposal. Actually doing so might jeopardize an organization’s competitive...

Linking water and energy objectives in lowland areas through the application of model predictive control

Unlike mountainous areas, lowland areas have limited potential to generate energy from water flows. Instead, for water systems in lowland areas that continuously need to pump water out of the system, the focus should be set to saving energy in the present water management. This paper gives an introduction into possibilities to manage water...

Local impact on aluminium ship plating caused by a collision at high speed

Kwaliteitsborging met betrekking tot Lastechnisch Constru