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Calgary, Canada

Singh A.P.,BITS Pilani K.K. | Ruhe G.,University of Calgary | Abbas S.,University of Calgary | Banack S.,City of Calgary
Proceedings of the Annual Hawaii International Conference on System Sciences | Year: 2014

This paper describes the design, development and initial evaluation of a decision support system (DSS) for capacitated arc routing. The research was motivated from a collaboration project with The City of Calgary business unit for Waste & Recycling Services (WRS). Their services cover residential waste collection for 306, 000 residential homes. Intelligent decision support was needed to address the increasing business complexity and the need for higher efficiency and transparency of decision-making processes. The proposed routing is incorporating seasonal trends of waste creation. The seasonal changes are between 10.000 (low) to 25000 (peak) tons per month for the whole city. Different arc routings apply for different amounts of waste. A prototype DSS was developed with several components including one for prediction of waste amounts and one for arc routing of trucks. The paper describes the methodology, the existing DSS-WRS prototype implementation and preliminary results from its case study implementation. © 2014 IEEE. Source

Qin X.,City of Calgary | Khan A.M.,Carleton University
Transportation Research Part C: Emerging Technologies | Year: 2012

Emergency vehicle (EV) operation saves lives and reduces property damage. This paper reports two new control strategies for EV signal pre-emption (EVSP) that reduce the response time and minimize the impact of EV operation on general traffic. A real-time control strategy is developed that enables signal transitioning from normal operation to EVSP (transition 1) so that the approaching EV can cross the intersection safely at its operating speed and also the impact of the EVSP on general traffic is decreased. The green time that is not required for the EV is dynamically allotted to the traffic on the cross road by taking into account the prevailing traffic condition at the intersection and the state of signal indication. The second control strategy, implemented by an optimal control algorithm, is used for the signal transitioning from the EVSP back to normal operation (transition 2). A two-phase algorithm, consisting of a relaxation method and a stepwise search strategy, is adopted to overcome the difficulty in solving the optimal control model, which results from the interrelationship between successive signal sequences. Software was developed in the MATLAB environment for simulations of the EVSP process under different signal timing transitioning control strategies. Results indicate that the real-time control and the optimal control strategies and their associated methods perform better than the commonly used existing approaches. It is also demonstrated that the two control strategies are applicable to different traffic conditions up to and slightly over-saturated level, and can be used to deal with a single EVSP occurrence as well as multiple EVSP occurrences. © 2012 Elsevier Ltd. Source

Malzer J.,City of Calgary | Malzer J.,University of Calgary
ITE Journal (Institute of Transportation Engineers) | Year: 2013

"Come Hell or High Water" became the City of Calgary's collective motto, coined during the incredible flood in southern Alberta, Canada that took place on June 20, 2013. Unlike the flood of 1997, which was anticipated for weeks and resulted in little destruction within Winnipeg, no one saw this flood coming in a significant amount of time beforehand. That Thursday night my friends were in touch to see whether our softball game would be cancelled; it had been raining. Within 24 hours our downtown would be-it seemed-gone. Source

Kuzyk L.W.,City of Calgary
Ecological Indicators | Year: 2012

The ecological footprint (EF) and its unit, the global hectare, share a reputation of effectively communicating the connection between local awareness and global impact. One use of a Geographic Information System (GIS) in urban planning is decision support, while the potential of the ecological footprint in GIS has not developed significantly. The smaller the spatial unit in GIS, the more accurate and flexible are the available GIS analyses. As urban planners are interested in showing sustainability at a local level and need accurate local data, the EF Housing component, of specific interest to planners is estimated here through a bottom up or component method to meet this need for a local measure. Average household energy use is purchased from local utilities companies in units of energy while the City Assessment department supplies dwelling size data for each household. Postal code areas approximating block faces are created for the City of Calgary in GIS and energy and household size is converted to GIS format allowing GIS analysis and map creation. A sample analysis is carried out that involves comparison between the sustainability of inner city single family Infill housing and older existing single family housing. This case study method involves a direct measure of housing energy and materials consumption, yet one that may be expressed in global hectares. Analytical output shows a net increase in the use of global hectares by Infill houses where improved building insulation standards and heating technology effecting gas consumption over time are more than offset by increased house size. Ecological footprint components, such as the Housing and perhaps Mobility, of specific interest to urban policy planners can be presented in GIS maps and tables to stimulate urban planner policy debate and potential decision-making support. GIS sourced household data while retaining units in EF global hectares makes sustainability analysis possible at a household scale. The GIS analysis here, which spatially and numerically shows the difference in sustainability between Infill housing and older existing housing, may allow planners to formulate effective policy. As well as the benefits of the land use measure and global data at a local level, the EF is effective in raising awareness, education and policy debate. Local ecological footprint measurements appear to be in a position to support urban planner policy decisions. © 2011 Elsevier Ltd. Source

Gibbons M.P.M.,Rowan Williams Davies and Irwin Inc. RWDI | Chapman R.J.,RWDI AIR Inc. | Cherneski D.M.,RWDI AIR Inc. | De Jong C.,City of Calgary | Gauthier M.,RWDI AIR Inc.
Proceedings, Annual Conference - Canadian Society for Civil Engineering | Year: 2013

Environment Canada, the National Centers for Environmental Prediction (NCEP), and private weather companies provide numerical weather forecast products that cover Canada and the United States. While the spatial and temporal resolution of these numerical weather forecast products are sufficient for public consumption there are limitations to the application of these products for predicting winds at multiple working heights for construction projects. This paper summarizes an advanced wind warning system that was developed for the City of Calgary. This system combines weather forecast technology with wind engineering best practices to predict winds at multiple working heights and provide alerts to reduce incidents of falling debris and the impacts of catastrophic wind related events. Technical, scientific and operational characteristics of the system as well as the results of preliminary model verification studies will be presented. Source

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