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Record W7133075920

Potential Hydrologic Changes of a Low Impact Development Neighbourhood

2023· dissertation· W7133075920 on OpenAlexafffund
Yin Yin

Bibliographic record

VenueTSpace · 2023
Typedissertation
Language
FieldEnvironmental Science
TopicUrban Stormwater Management Solutions
Canadian institutionsUniversity of Toronto
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsLysimeterLow-impact developmentWater balanceEvapotranspirationStormwaterBioretentionHydrology (agriculture)Neighbourhood (mathematics)Surface runoff
DOInot available

Abstract

fetched live from OpenAlex

Low Impact Development is intended to maintain pre-development hydrology, but this remains widely unproven due to a lack of large-scale implemented and monitored projects. The Creek Side Village (CSV) is a planned community that will convert a 28 ha fallow field into a mixed-density residential neighbourhood for seniors. The proposed neighbourhood will not include conventional stormwater management systems and will instead manage stormwater exclusively through Low Impact Development (LID). This thesis proposes an approach for evaluating the pre-development hydrologic conditions of a land development site and examines how hydrologic processes may change when developed with LID infrastructure for stormwater management. The property's pre-development hydrological conditions were characterized by collecting field data in the summer and fall seasons with comprehensive onsite measuring tools to understand the current seasonal hydrological condition. The development property has highly permeable soils with an average saturated hydraulic conductivity of 24 mm/hr, making the site well suited for infiltration-based LIDs. Evapotranspiration (ET) and seepage water data collected from high-resolution weighing lysimeters were analyzed to determine the site’s water balance. A comprehensive filtering process was developed and adopted to minimize the errors in the lysimeter data, thereby improving the estimate of ET. The water balance between the proposed LID neighbourhood was compared with data from an instrumented bioretention cell site to assess if this LID approach is likely to mimic the pre-development water balance. Results showed that green infrastructure could mimic the water balance of the fallow field and compensate for potential ET losses after development. Field data were used as input data for a pre-development hydrologic model (using SWMM and SWMM-UrbanEVA). The model was calibrated using the lysimeter water balance data. Hydrologic modelling was conducted to determine if specific LID approaches (permeable pavements and/or bioretention cells) can maintain pre-development water balance conditions after development. Four proposed post-development scenarios were considered. The modelling work reveals that bioretention cells are unlikely to maintain the pre-development water balance. Using PPs to control stormwater is a more effective approach, while PPs+BioCells can help maintain pre-development water balance, but they are less effective than PPs only.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.012
Threshold uncertainty score0.024

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0010.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.018
GPT teacher head0.296
Teacher spread0.278 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSimulation or modeling
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2023
Admission routes2
Has abstractyes

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