Decision tree for choosing an uncertainty analysis methodology: a wiki experiment http://www.floodrisknet.org.uk/methodshttp://www.floodrisk.net

Pappenberger, Florian; Harvey, Hamish; Beven, Keith; Meadowcroft, IC

doi:10.1002/hyp.6541

Cited by 29 publications

(21 citation statements)

References 2 publications

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“…Previous research has demonstrated that wikis can be successfully applied in education, for example [1,5,9,16,30,28]. For example, Kim et al [20] applied a Wiki in order to learn a programming method and reported the advantage of wikis in fostering learners ability of algorithm thinking through processing of sharing ideas and collaborating on a work with learners, they also found that wikis improved learners' thinking power.…”

Section: Introductionmentioning

confidence: 94%

Utilizing Wiki-Systems in higher education classes: a chance for universal access?

Ebner

Kickmeier-Rust

Holzinger

2008

Univ Access Inf Soc

102

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Wikis are a website technology for mass collaborative authoring. Today, wikis are increasingly used for educational purposes. Basically, the most important asset of wikis is free and easy access for end users: everybody can contribute, comment and edit-following the principles of Universal access. Consequently, wikis are ideally suited for collaborative learning and a number of studies reported a great success of wikis in terms of active participation, collaboration, and a rapidly growing content. However, the wikis success in education was often linked either to direct incentives or even pressure. This paper strongly argues that this contradicts the original intentions of wikis and, furthermore, weakens the psycho-pedagogical impact. A study is presented which focuses on investigating the success of wikis in higher education, when students are neither enforced to contribute nor directly rewarded similar to the principles of Wikipedia. Amazingly, the results show that, in total, none of the N = 287 students created new articles or edited existing ones during a whole semester. It is concluded that the use of Wiki-Systems in educational settings is much more complicated, and it needs more time to develop a kind of ''give-and-take'' generation.

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Section: Introductionmentioning

confidence: 94%

Utilizing Wiki-Systems in higher education classes: a chance for universal access?

Ebner

Kickmeier-Rust

Holzinger

2008

Univ Access Inf Soc

102

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“…Based on the links between the wiki approach and learning theory, it is not surprising that there are reports of the successful application of wikis in higher education (Guzdial, Rick & Kehoe, 2001;Pappenberger, Harvey, Beven, Hall & Meadowcroft, 2006). For example, wikis facilitate student-teacher and student-student interactions (Stahmer, 2006), promote casual and flexible discussion (Read, 2005), and allow students to collaborate to conduct research and communicate their findings (Bold, 2006).…”

Section: Introductionmentioning

confidence: 99%

The effects of using a wiki on student engagement and learning of report writing skills in a university statistics course

Neumann

Hood

2009

AJET

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A wiki was used as part of a blended learning approach to promote collaborative learning among students in a first year university statistics class. One group of students analysed a data set and communicated the results by jointly writing a practice report using a wiki. A second group analysed the same data but communicated the results in a practice report that they wrote individually. Both groups were taught the same material. The report was used for practice as a way to support student learning and was not submitted for assessment. Both approaches improved report writing knowledge and did not differ in the mark obtained on an individually written research report subsequently submitted for assessment. The wiki approach produced higher engagement with other students, cognitive engagement, and class attendance than the individual approach. Qualitative feedback suggested some drawbacks to using a wiki. Overall participation was also low with only 2 of the 22 wiki subgroups completing all components of the practice report. The present findings suggest that student engagement, but not performance on assessment, may be enhanced when a wiki is used to support learning in higher education.

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“…Uncertainty estimation is a fundamental topic in hydrology and hydraulic modelling (see discussion in Pappenberger and Beven (2006) and Pappenberger et al (2006a)). Mathematical models are always an approximation to reality and the evaluation of the uncertainties is one of the key research priorities in every modelling process.…”

Section: Introductionmentioning

confidence: 99%

Uncertainty, sensitivity analysis and the role of data based mechanistic modeling in hydrology

Ratto

Young

Romanowicz

et al. 2007

Hydrol. Earth Syst. Sci.

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Abstract. In this paper, we discuss a joint approach to calibration and uncertainty estimation for hydrologic systems that combines a top-down, data-based mechanistic (DBM) modelling methodology; and a bottom-up, reductionist modelling methodology. The combined approach is applied to the modelling of the River Hodder catchment in North-West England. The top-down DBM model provides a well identified, statistically sound yet physically meaningful description of the rainfall-flow data, revealing important characteristics of the catchment-scale response, such as the nature of the effective rainfall nonlinearity and the partitioning of the effective rainfall into different flow pathways. These characteristics are defined inductively from the data without prior assumptions about the model structure, other than it is within the generic class of nonlinear differentialdelay equations. The bottom-up modelling is developed using the TOPMODEL, whose structure is assumed a priori and is evaluated by global sensitivity analysis (GSA) in order to specify the most sensitive and important parameters. The subsequent exercises in calibration and validation, performed with Generalized Likelihood Uncertainty Estimation (GLUE), are carried out in the light of the GSA and DBM analyses. This allows for the pre-calibration of the the priors used for GLUE, in order to eliminate dynamical features of the TOPMODEL that have little effect on the model output and would be rejected at the structure identification phase of the DBM modelling analysis. In this way, the elements of meaningful subjectivity in the GLUE approach, which allow the modeler to interact in the modelling process by constraining the model to have a specific form prior to calibration, are combined with other more objective, data-based benchmarks for the final uncertainty estimation. GSA plays a major role in building a bridge between the hypotheticodeductive (bottom-up) and inductive (top-down) approachesCorrespondence to: M. Ratto (marco.ratto@jrc.it) and helps to improve the calibration of mechanistic hydrological models, making their properties more transparent. It also helps to highlight possible mis-specification problems, if these are identified. The results of the exercise show that the two modelling methodologies have good synergy; combining well to produce a complete joint modelling approach that has the kinds of checks-and-balances required in practical data-based modelling of rainfall-flow systems. Such a combined approach also produces models that are suitable for different kinds of application. As such, the DBM model considered in the paper is developed specifically as a vehicle for flow and flood forecasting (although the generality of DBM modelling means that a simulation version of the model could be developed if required); while TOPMODEL, suitably calibrated (and perhaps modified) in the light of the DBM and GSA results, immediately provides a simulation model with a variety of potential applications, in areas such as catchment management and planning.

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Decision tree for choosing an uncertainty analysis methodology: a wiki experiment http://www.floodrisknet.org.uk/methodshttp://www.floodrisk.net

Cited by 29 publications

References 2 publications

Utilizing Wiki-Systems in higher education classes: a chance for universal access?

Utilizing Wiki-Systems in higher education classes: a chance for universal access?

The effects of using a wiki on student engagement and learning of report writing skills in a university statistics course

Uncertainty, sensitivity analysis and the role of data based mechanistic modeling in hydrology

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