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Events Calendar

NEXT 10 EVENTS ON OR AFTER February 1, 2015

[Show all events in February]

Thursday, February 19, 2015

4:00 PM - 5:00 PM

"Microscopic Simulation and Safety Analysis of Roundabouts"

Speaker: 

Dr. Nezamuddin, Assistant Professor of Civil Engineering, Valparaiso University

Abstract:  Although circular junctions are usually associated with the British, their presence in the United States dates back to at least 1905 when Columbus Circle was built near Central Park in New York. Those early twentieth century circular junctions, called traffic circles, were designed for high-speed entries into the circular area and gave priority to the entering vehicles over the circulating vehicles. That was a recipe for disaster. High crash experience and choked traffic circles meant that circular junctions will never gain ground in the United States again. In the 1960s, the United Kingdom introduced the mandatory yield-at-entry rule at circular junctions, which led to the birth of the modern roundabout. Safety is the hallmark of modern roundabouts and they are popular in certain parts of Europe and Australia. The first modern roundabout in the United States was built in Nevada in 1990 and their number is steadily rising since then: 38 in 1997, more than 2,000 in 2010, and over 3,700 at present. There's still initial resistance from the public, but public attitude toward a roundabout changes favorably after the construction. Hundreds of roundabouts are expected to be built each year in the United States. This study presents a microscopic simulation modeling and safety analysis of the modern roundabouts.

 Bio: Dr. Nezamuddin is an assistant professor of civil engineering at Valparaiso University in northwest Indiana. Prior to joining Valparaiso University in August 2013, he was a research fellow at the Center for Transportation Research at the University of Texas at Austin from 2011 to 2013, where he worked in the areas of dynamic network modeling, traffic operations and microscopic simulation. Currently, he is working on microscopic simulation modeling and safety analysis of roundabouts. Dr. Nezamuddin received a Ph.D. (civil engineering) from the University of Texas at Austin and B.Tech. (civil engineering) from the Indian Institute of Technology Delhi, New Delhi.

 

Contact Info: Diana Marek

Location: Chambers Hall 600 Foster St Ruan Conference Center - Lower Level Evanston, IL 60208

Event URL: http://www.transportation.northwestern.edu/

Thursday, March 5, 2015

4:00 PM - 5:00 PM

"Tactical Network Planning for Food Aid Distribution in Kenya"

Speaker:  Marie-Eve Rancourt, Assistant Professor, Department of Management &; Technology, Business School of the University of Quebec in Montreal

 

Abstract:   In Sub-Saharan Africa, annual weather patterns cause recurrent shocks which make the population vulnerable to food insecurity. In some regions, seasonal droughts create regular food shortages that are mitigated through sustained food aid. The objective of this study is to design an effective last-mile food aid distribution network in such a context. It is based on the food aid distribution problem arising in the region of Garissa in Kenya, but the methodology that it introduces is of general applicability. We present a location model to determine a set of distribution centers from which the food is directly distributed to the beneficiaries. Our model considers the welfare of all stakeholders involved in this regional response system: the World Food Programme, the Kenya Red Cross, and the beneficiaries. We describe how need assessment and population data were combined to determine the food distribution requirements. We also show how GIS data describing the road network was used to establish a set of potential distribution centers and to evaluate transportation costs. In addition to the results obtained by solving our primary model, we present variants of the basic covering model and several comparative analyses to illustrate the trade-offs between the objectives of the different stakeholders. Finally, future research directions are presented and discussed.

 Bio:   Marie-Eve Rancourt is an assistant professor of operations management at the Business School of the University of Québec in Montréal since August 2012. She is also affiliated with the Interuniversity Research Center on Enterprise Networks, Logistics and Transportation (CIRRELT), the Massachusetts Institute of Technology (MIT), and a member of the Canadian Research Institute on Humanitarian Crisis and Aid (OCCAH). 

Her research interests are in the areas of transportation system modeling and humanitarian logistics using techniques based on operations research and econometric. The main field applications of her research include network design for food aid distribution, routing and scheduling of long-haul transportation problems, transportation procurement and market analysis in emerging countries. Her recent work has been focussing on logistics issues related with food security in the Horn of Africa. She is working in collaboration with different organisations, such as the World Food Programme, the Kenya Red Cross and the UNICEF to develop analytical methods for planning food aid distribution and provide insight to alleviate access to populations located in insecure areas. She received her Ph.D. in management science from HEC Montreal in 2013; an M.Sc. in modeling and decision support from HEC Montreal in 2007; and a B.Sc. in mathematics form the University of Montreal in 2004.

 

Contact Info: Diana Marek

Location: Chambers Hall 600 Foster St Ruan Conference Center, Lower Level Evanston, IL 60208

Event URL: http://www.transportation.northwestern.edu/