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We introduce a “symbiotic” ocean modeling strategy that leverages data-driven and machine learning methods to allow high- and low-resolution dynamical models to mutually benefit from each other. In this work we mainly focus on how a low-resolution model can be enhanced within a symbiotic model configuration. The broader aim is to enhance the representation of unresolved processes in low-resolution models, while simultaneously improving the efficiency of high-resolution models. To achieve this, we use a grid-switching approach together with hybrid modeling techniques that combine linear regression-based methods with nonlinear echo state networks. The approach is applied to both the Kuramoto–Sivashinsky equation and a single-layer quasi-geostrophic ocean model, and shown to simulate short-term and long-term behavior better than either purely data-based methods or low-resolution models. By maintaining key flow characteristics, the hybrid modeling techniques are also able to provide higher quality initial conditions for high-resolution models, thereby improving their efficiency. Key Points We propose a symbiotic ocean modeling framework in which models of different complexities benefit from each other Unresolved processes are represented through hybrid machine learning methods using data from the symbiotic framework Hybrid correction strategies with imperfect physics as control input improve the representation of key long-term flow properties

Research into the relationship between innovative physical learning environments (PLEs) and innovative psychosocial learning environments (PSLEs) indicates that it must be understood as a network of relationships between multiple psychosocial and physical aspects. Actors shape this network by attaching meanings to these aspects and their relationships in a continuous process of gaining and exchanging experiences. This study used a psychosocial-physical, relational approach for exploring teachers’ and students’ experiences with six innovative PLEs in a higher educational institute, with the application of a psychosocial-physical relationship (PPR) framework. This framework, which brings together the multitude of PLE and PSLE aspects, was used to map and analyse teachers’ and students’ experiences that were gathered in focus group interviews. The PPR framework proved useful in analysing the results and comparing them with previous research. Previously-identified relationships were confirmed, clarified, and nuanced. The results underline the importance of the attunement of system aspects to pedagogical and spatial changes, and of a psychosocial-physical relational approach in designing and implementing new learning environments, including the involvement of actors in the discourse within and between the different system levels. Interventions can be less invasive, resistance to processes could be reduced, and innovative PLEs could be used more effectively., Design for Sustainability

The Oceanographic Multi-purpose Software Environment: a package for multi-physics and multi-scale earth science simulations.

Bij de versterking van de Lekdijk tussen Kinderdijk en Schoonhovenseveer zijn verkeerde technieken toegepast waardoor woningen achter de dijk kampen met ernstige scheurvorming. Dat stelt hoogleraar Stefan van Baars in zijn onderzoek.

To convey information during an oral presentation speakers not only use words, they also gesticulate. Their gestures can be divided into iconic, metaphoric, deictic and beat gestures (McNeill, 1992). Beats (repetitive, short movements) are frowned upon by some presentation skills advisers. Earlier research that focused on short speeches, mostly about concrete topological content, found that gestures help the listener to understand and remember the content. Presentation skills courses, however, focus on longer, more abstract informative speeches. To explore how gestures influence both retention and assessment of the speaker in such longer speeches, an experiment was conducted. Participants (N = 229) were asked to watch a fifteen minute informative presentation accompanied by PowerPoint slides, either (i) without gestures, (ii) with only beat gestures, or (iii) with a mix of iconic, metaphoric, deictic, and beat gestures. Participants were tested on retention and on their assessment of speaker qualities. An ANOVA showed a significant effect for retention. When a speaker accompanied his speech with only beat gestures, this resulted in higher scores than when this speaker remained in a static position. Also, when the speaker used only beat gestures, he was seen as more ‘natural’ than when he remained in a static position. These results do not imply causality. They may, however, temper advisers’ warnings against using beat gestures in presentations., Instituut voor Talen en Academische Vaardigheden

It is well known that deterministic two-dimensional marine ice sheets can only be stable if the grounding line is positioned at a sufficiently steep, downward sloping bedrock. When bedrock conditions favour instabilities, multiple stable ice sheet profiles may occur. Here, we employ continuation techniques to examine the sensitivity of a two-dimensional marine ice sheet to stochastic noise representing short time scale variability, either in the accumulation rate or in the sea level height. We find that in unique regimes, the position of the grounding line is most sensitive to noise in the accumulation rate and can explain excursions observed in field measurements. In the multiple equilibrium regime, there is a strong asymmetry in transition probabilities between the different ice sheet states, with a strong preference to switch to the branch with a steeper bedrock slope.

Item does not contain fulltext, [boek] In het kader van passend onderwijs vinden binnenkort enkele belangrijke wijzigingen plaats in de bekostiging van speciale onderwijszorg. Het sbo was al gebudgetteerd, het (v)so en de leerlinggebonden financiering (lgf) zullen op korte termijn gebudgetteerd worden. Het leerwegondersteunend onderwijs (lwoo) en het praktijkonderwijs (pro) zullen waarschijnlijk op wat langere termijn gebudgetteerd worden. Scholen en/of samenwerkingsverbanden krijgen hierdoor niet langer een budget als een leerling aan bepaalde criteria voldoet, maar zij krijgen voortaan een vooraf afgesproken bedrag; daar moeten zij het dan mee doen. Deze publicatie wil een verantwoord antwoord bieden op de uitdaging om de budgetten op basis van goed onderwijs en effectief leerkrachtgedrag adequaat en doeltreffend te verdelen. Zo willen we bijdragen aan een effectievere onderwijszorg voor leerlingen die onze pedagogische, orthodidactische en onderwijskundige ondersteuning en zorg hard nodig hebben. Dit geldt des te meer in een economisch klimaat, waarin tegelijkertijd gestreefd moet worden naar een transparante en verantwoorde budgetverdeling en naar een optimale combinatie van effectief onderwijs én effectieve zorg.

Om de lopende problemen met verontreinigde sloten en andere waterlopen op de luchthaven Schiphol structureel aan te pakken is het Saneringsplan water Schiphol opgesteld. Hierin staan alle (technische) maatregelen verwoord om te kunnen voldoen aan het emissie- en het waterkwaliteitsspoor. Om te onderzoeken, of er na uitvoering van de maatregelen voor het saneren van lozingen tijdens de winteroperatie op luchthaven Schiphol nog knelpunten in de oppervlaktewaterkwaliteit aanwezig zijn, is een waterkwaliteitstoets uitgevoerd.

Werkgroep Riolering West-Nederland heeft verkend wat 'Verbindend Water', de toekomstvisie die de partijen in het Bestuursakkoord Waterketen hebben laten opstellen, kan betekenen. Vanuit de invalshoek riolering en voor de situatie in West-Nederland werkte de werkgroep de toekomstvisie verder uit in een stappenplan als een eerste aanzet om kosteneffectief met de riolering naar het toekomstbeeld toe te groeien en in elk geval geen blokkades op te werpen.

Civil Engineering and Geosciences, Hydraulic Engineering

Analysis of observations of sea level rise in the Netherlands related to physical effects in world climate., Hydraulic Engineering, Civil Engineering and Geosciences