Development of Hydraulic Conceptual Model for Constructed Stormwater Wetland

Constructed stormwater wetlands are manmade, shallow and extensively vegetated water bodies which promote runoff volume and peak flow reduction through infiltration, evaporation and retention. Constructed stormwater wetlands are also termed as efficient stormwater quality treatment devices, particularly when stormwater contains high concentrations of dissolved pollutants which are difficult to be removed by other stormwater treatment devices (Bautista and Geiger 1993; Mitsch andGosselink 1986; Scholz 2006). Researchers have noted that treatment processes of stormwater in a constructed wetland are influenced by a range of hydraulic factors. In past research, these influential hydraulic factors have been developed using lumped modelling approaches. However, these influential hydraulic factors can vary during an event. Therefore, their influence on treatment can vary as the event progresses. Variation in hydraulic factors during an event can only be generatedusing a detailed modelling approach. Due to this reason, a conceptual modelling approach was necessary to be developed to replicate hydraulic conditions within the wetland. The developed hydraulic conceptual model of constructed wetland was calibrated using trial and error proceduresby comparing the model outflow with the measured field outflow data. The accuracy of the developed model was also analysed using a well-known statistical analysis method developed based on the regression analysis technique. The analysis results show that the developed model is considered satisfactory suggesting that the approach used to develop the model is precise

Metacognitive Development and Conceptual Change in Children

There has been little investigation to date of the way metacognition is involved in conceptual change. It has been recognised that analytic metacognition is important to the way older children acquire more sophisticated scientific and mathematical concepts at school. But there has been barely any examination of the role of metacognition in earlier stages of concept acquisition, at the ages that have been the major focus of the developmental psychology of concepts. The growing evidence that even young children have a capacity for procedural metacognition raises the question of whether and how these abilities are involved in conceptual development. More specifically, are there developmental changes in metacognitive abilities that have a wholescale effect on the way children acquire new concepts and replace existing concepts? We show that there is already evidence of at least one plausible example of such a link and argue that these connections deserve to be investigated systematically

Positioning for conceptual development using latent semantic analysis

With increasing opportunities to learn online, the problem of positioning learners in an educational network of content offers new possibilities for the utilisation of geometry-based natural language processing techniques. In this article, the adoption of latent semantic analysis (LSA) for guiding learners in their conceptual development is investigated. We propose five new algorithmic derivations of LSA and test their validity for positioning in an experiment in order to draw back conclusions on the suitability of machine learning from previously accredited evidence. Special attention is thereby directed towards the role of distractors and the calculation of thresholds when using similarities as a proxy for assessing conceptual closeness. Results indicate that learning improves positioning. Distractors are of low value and seem to be replaceable by generic noise to improve threshold calculation. Furthermore, new ways to flexibly calculate thresholds could be identified

A conceptual framework for development of sustainable development indicators

There was a boom in the development of sustainable development indicators (SDIs) after notion of sustainability became popular through Bruntland Commission's report. Since then numerous efforts have been made worldwide in constructing SDIs at global, national and local scales, but in India not a single city has registered any initiative for indicator development . Motivated by this dearth of studies added to the prevailing sustainability risks in million plus cities in India, a research is being undertaken at the Indira Gandhi Institute of Development and Research (IGIDR), Mumbai, India, to develop a set of sustainable indicators to study the resource dynamics of the city of Mumbai. As a first step in the process, the ground for development of SDIs is prepared through the development of a framework. A multi-view black box (MVBB) framework has been constructed by eliminating the system component from the extended urban metabolism model (EUMM) and introducing three-dimensional views of economic efficiency (EE), social wellbeing (SW), and ecological acceptability (EA). Domain-based classification was adopted to facilitate a scientifically credible set of indicators. The important domain areas are identified and applying MVBB framework, a model has been developed for each domain.Urban metabolism, Resources transformation, Economic efficiency, Society, Ecology, Monitoring and evaluation, City development, Black box, Productization of process

Conceptual Role Semantics, the Theory Theory, and Conceptual Change

The purpose of the paper is twofold. I first outline a philosophical theory of concepts based on conceptual role semantics. This approach is explicitly intended as a framework for the study and explanation of conceptual change in science. Then I point to the close similarities between this philosophical framework and the theory theory of concepts, suggesting that a convergence between psychological and philosophical approaches to concepts is possible. An underlying theme is to stress that using a non-atomist account of concepts is crucial for the successful study of conceptual development and change—both for the explanation of individual cognitive development and for the study of conceptual change in science

Monitoring conceptual development with text mining technologies: CONSPECT

This paper evaluates CONSPECT, a service that analyses states in a learner’s conceptual development. It combines two technologies – Latent Semantic Analysis to analyse text and Network Analysis (NA) to provide visualisations – into a technique called Meaningful Interaction Analysis (MIA). CONSPECT was designed to help both online learners and their tutors monitor their conceptual development. This paper reports on the validation experiments undertaken to determine how well LSA matches first year medical students in clustering concepts and in annotating text. The validation used several techniques, including card sorting and Likert scales. CONSPECT produces almost ‘peer’ quality results and what remains to be tested is whether it improves with more advanced learners. One of the experiments showed an average 0.7 correlation between humans and CONSPECT

SME Development Banks: Conceptual Framework and Empirical Analysis

In this paper we develop a conceptual framework to define small and medium-sized enterprise development banks (SMEDB). This conceptual effort is motivated by the lack of a clear definition of SMEDB. Once a consistent definition of SMEDB is provided, we compare a sample of banks that are SMEDB according to such definition with a sample of commercial banks. We conclude that it is possible to separate SMEDB from commercial banks in a statistically significant manner by taking into consideration a set of relevant financial indicators and we confirm the widespread idea that SMEDB play a crucial public/social role

Software Reuse in Agile Development Organizations - A Conceptual Management Tool

The reuse of knowledge is considered a major factor for increasing productivity and quality. In the software industry knowledge is embodied in software assets such as code components, functional designs and test cases. This kind of knowledge reuse is also referred to as software reuse. Although the benefits can be substantial, software reuse has never reached its full potential. Organizations are not aware of the different levels of reuse or do not know how to address reuse issues. This paper proposes a conceptual management tool for supporting software reuse. Furthermore the paper presents the findings of the application of the management tool in an agile development organization