12 results
Search Results
2. Water pipe failure prediction and risk models: state-of-the-art review.
- Author
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Dawood, Thikra, Elwakil, Emad, Novoa, Hector Mayol, and Gárate Delgado, José Fernando
- Subjects
PREDICTION models ,PIPE ,STATISTICAL models ,FORECASTING ,CIVIL engineering ,STRUCTURAL failures - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
- Full Text
- View/download PDF
3. Performance evaluation of road surface temperature forecasts.
- Author
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Kwon, Tae J. and Fu, Liping
- Subjects
SURFACE temperature ,PAVEMENTS ,MARINE west coast climate ,FORECASTING ,WEATHER forecasting - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
4. Statistics and prediction of vehicle–bridge collisions in Quebec.
- Author
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Berton, E., Bouaanani, N., Lamarche, C.-P., and Roy, N.
- Subjects
ROAD users ,PAVEMENTS ,SPEED limits ,REGRESSION analysis ,FORECASTING - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
5. Unit of analysis in conventional trip generation modelling: an investigation.
- Author
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Badoe, Daniel A. and Chin-Cheng Chen
- Subjects
TRIP generation ,TRAVEL ,FORECASTING ,ECONOMIC demand - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2004
- Full Text
- View/download PDF
6. Production prediction of conventional and global positioning system-based earthmoving systems using simulation and multiple regression analysis.
- Author
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Seungwoo Han, Taehoon Hong, and Sangyoub Lee
- Subjects
GLOBAL Positioning System ,EARTHMOVING machinery ,MULTIPLE regression analysis ,CONSTRUCTION equipment ,FORECASTING ,TECHNOLOGY - Abstract
Accurate estimation of construction production, which is composed of productivity and unit costs, allows construction planners and managers to have excellent control over current processes and to correctly predict the production of similar projects in the future. Due to the need for accurate production estimation, selection of the appropriate construction technology is a critical factor in the success of a project. This paper presents a methodology for developing a model capable of predicting productivity and unit costs using several procedures, such as actual data collection, input data generation using construction simulation, and multiple regression analysis. An earthmoving operation was analyzed to estimate the proposed methodology’s prediction of construction production. A global positioning system (GPS)-based earthmoving system was selected as the new construction technology to be compared with the conventional system, to evaluate the decision-making process at a jobsite. The proposed methodology is expected to provide users with a basis for selecting appropriate technology. The case study presented in this paper demonstrates how to utilize the proposed methodology and analyze its predicted results. L'estimation précise de la production de construction, qui est composée de la productivité et des coûts unitaires, permet aux pilotes et gestionnaires de construction d'avoir un contrôle excellent sur les processus en cours et de prévoir correctement la production de projets similaires à l'avenir. En raison de la nécessité d'une estimation précise de production, le choix de la technologie de construction appropriée est un facteur critique dans la réussite d'un projet. Cet article présente une méthodologie pour développer un modèle capable de prédire la productivité et le coût unitaire en utilisant plusieurs procédures, telles que la collecte de données réelles, la génération de données d'entrée par simulation de construction et l'analyse de régression multiple. Une opération de terrassement a été analysée pour estimer la prédiction de la production de construction par la méthodologie proposée. Un engin de terrassement muni de système de positionnement global (« GPS ») a été choisi comme la nouvelle technologie de construction à comparer avec le système conventionnel pour évaluer le processus de prise de décision sur un chantier. La méthodologie proposée est censée fournir aux utilisateurs une base pour la sélection de la technologie appropriée. L'étude de cas présentée dans cet article montre comment utiliser la méthodologie proposée et analyser ses résultats prédits. [ABSTRACT FROM AUTHOR]
- Published
- 2008
- Full Text
- View/download PDF
7. Forecasting breaks in cast iron water mains in the city of Kingston with an artificial neural network model.
- Author
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Nishiyama, Michael and Filion, Yves
- Subjects
WATER-pipe maintenance & repair ,MONITORING of water-pipes ,ARTIFICIAL neural networks ,FORECASTING - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2014
- Full Text
- View/download PDF
8. Evaluation of accident prediction for rural highways.
- Author
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Hildebrand, Eric, Robichaud, Karen, and Hong Ye
- Subjects
TRAFFIC accidents ,ROADS ,FORECASTING ,ACCIDENTS ,SAFETY ,COLLISIONS (Physics) - Abstract
This paper evaluates the accuracy of three commonly used models that predict accidents on two-lane, rural, arterial highways. The retrospective evaluation compared model outputs with empirical collision results for a sample of highway sections in the Province of New Brunswick. The analysis determined historical accident rates, identified key predictive variables, and compared the observed results with estimates from each safety model. All three models were found to significantly overestimate accident frequencies on the highway sections under study. The model generally employed in New Brunswick, MicroBENCOST, was found to yield the highest errors in estimated collisions. These findings suggest that the benefits from accident reduction are generally overestimated on highway improvement projects analyzed with these accident prediction models. Cet article évalue la précision de trois modèles couramment utilisés pour la prédiction d'accidents sur les autoroutes à deux voies; rurales et les avenues. L’évaluation rétrospective à comparé les résultats des modèles aux résultats empirique de collision pour un échantillon de sections d'autoroutes dans la province du Nouveau-Brunswick. L’analyse a permis de déterminer le taux historique d'accidents, a identifié les principales variables prédictives et à comparé les résultats observés aux estimations de chaque modèle de sécurité. Il a été trouvé que les trois modèles sur-estiment significativement les fréquences d’accidents sur les sections d’autoroutes étudiées. Il a été trouvé que le modèle généralement employé au Nouveau-Brunswick, MicroBENCOST, produit les erreurs les plus élevées pour l’estimation des collisions. Ces résultats suggèrent que les avantages dûs à la réduction des accidents sont généralement sur-estimés dans les projets d'amélioration des routes analysés avec ces modèles de prédiction des accidents. [ABSTRACT FROM AUTHOR]
- Published
- 2008
- Full Text
- View/download PDF
9. Les prévisions des brèches de rupture des barrages en terre restent difficiles.
- Author
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Zerrouk, N E and Marche, C
- Subjects
- *
DAM failures , *STRUCTURAL failures , *EROSION , *DAMS , *RIVER engineering - Abstract
The validity of dam failure studies is based on the appropriateness of the expected failure mode. Failures of earth-fill structures show the importance of the choice of breach parameters for failure evaluation and consequences. This paper summarizes the state of the possibilities for forecasting the breach and the resulting hydrograph in the downstream valley. It describes the most current methods, applies them on a failure case observed in the Saguenay region, Province of Québec, and compares the results. Considering the large uncertainty margin on the results, the paper allows one to understand why breach forecasting must not, in the current state of knowledge, be part of the safety study process, and that it is preferable to stay with a definition for breach based on a rule intelligently applied with respect to the case, the structure, and its composition.Key words: dam failure, dam breach, erosion, forecasting, flood of failure, earth-fill dam.[Journal translation]La validité des études de rupture de barrage repose sur la fiabilité du mode de rupture appréhendé. Les ruptures d'ouvrage en terre et enrochement montrent l'importance du choix des paramètres de brèche dans l'évaluation et les conséquences de rupture. Ce présent article résume l'état des possibilités de prévision de la brèche et de l'hydrogramme transmis dans la vallée en aval. Il décrit les méthodes les plus courantes, les applique à un cas de rupture observé au Saguenay en juillet 1996 et compare les résultats. À la lumière de la grande marge d'incertitude observée dans les résultats, il permet de comprendre pourquoi la prévision de la brèche ne doit pas dans l'état des connaissances actuelles faire partie de la démarche des études de sécurité et qu'il vaut mieux s'en tenir à une définition de celle-ci basée sur une norme appliquée intelligemment en fonction du cas, de l'ouvrage et de sa composition.Mots clés : rupture de barrage, brèche de barrage, érosion, prévision, crue de rupture, barrage en terre. [ABSTRACT FROM AUTHOR]
- Published
- 2001
- Full Text
- View/download PDF
10. On the implementation of the dynamically zoned target release reservoir model in the GEM-Hydro streamflow forecasting system.
- Author
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Gaborit, Étienne, Fortin, Vincent, and Durnford, Dorothy
- Subjects
HYDROELECTRIC power plants ,STREAMFLOW ,WATERSHEDS ,HYDROLOGIC models ,FORECASTING ,DAM failures ,DATA logging - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
11. Reference evapotranspiration forecasting using different artificial neural networks algorithms.
- Author
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Chauhan, Seema and Shrivastava, R. K.
- Subjects
ARTIFICIAL neural networks ,ALGORITHMS ,EVAPOTRANSPIRATION ,REGRESSION analysis ,CLIMATOLOGY - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2009
- Full Text
- View/download PDF
12. River ice breakup processes: recent advances and future directions.
- Author
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Beltaos, Spyros
- Subjects
ICE sheets ,RIVERS ,CLIMATE change ,SEDIMENT transport ,BIOTIC communities ,REMOTE sensing ,AEROSPACE telemetry ,GEOLOGICAL basins ,STRUCTURAL geology - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2007
- Full Text
- View/download PDF
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