2013 Session: 265

• Wholesale Hub Locations in Food Supply Chain Systems
  Abstract: This paper addresses the wholesale hub location problem in food supply chain systems. It aims at designing an optimal hub location network to serve food consumption markets through efficient connections with production sites. These optimal locations can be compared with the actual current locations of hubs to determine whether changes could lead to greater efficiencies. The model is mathematically formulated as a mixed integer programming problem. The model minimizes total network costs which include transporting goods and building hubs. The mathematical program considers several constraints on travel distance, hub capital cost and capacity, road condition, and transportation cost. Several experiments are conducted to test the sensitivity of the model to changes in parameters such as the food average travel distance, maximum hub capacity, transportation cost, etc. Then, a real-world application is made to the North-East U.S. region livestock industry. Finally, the results show the effect of the model parameter changes on optimal hub network design (i.e., number of hubs and selection of hub locations).
  Authors: Etemadnia, Hamideh; Hassan, Ahmed; Goetz, Stephan; Abdelghany, Khaled F.
  Authors: Etemadnia, Hamideh; Hassan, Ahmed; Goetz, Stephan; Abdelghany, Khaled F.
  Year: 2013
  Document Type: Paper
  Subject: Freight Transportation; Marine Transportation
  Session: 265
  Paper Number: 13-2886
• Assessing Relationship Between Transport Infrastructure and Agriculture Productivity in European Countries: Application of Data Envelopment Analysis and Malmquist Index
  Abstract: The government spendings in transport infrastructure has increased tremendously in recent years, but the extent to which this investment is affecting the local agriculture and industry is still not thoroughly investigated. This paper uses Data Envelopment Analysis to calculate the efficiency and Malmquist Index to calculate productivity of agriculture sector of European countries and assesses the impact of investment on transport infrastructure on efficiency and productivity. European countries are commonly divided into western European and central and east European countries. This paper analyzes the response of agriculture sector towards the investment in transport infrastructure in these two different groups of countries. Furthermore, investment in transport infrastructure has been sub-divided into investment in air, rail and road network, in order to establish the relative importance of different transportation modes for agriculture sector. The time span of study is 2001 to 2008 and 21 European countries are included in the study. .
  Authors: Chaudhry, Muhammad Omer; Braathen, Svein; Odeck, James
  Authors: Chaudhry, Muhammad Omer; Braathen, Svein; Odeck, James
  Year: 2013
  Document Type: Paper
  Subject: Freight Transportation; Marine Transportation
  Session: 265
  Paper Number: 13-4685
• Real-Time Assessment of Columbia-Snake River Extended Lock Outage: Process and Impacts
  Abstract: Waterborne movements, one of the more economical methods of all modes of transportation, comprise a key component of the Pacific Northwest multimodal transportation system. The Columbia]Snake River system in the Pacific Northwest recently underwent a sustained lock outage from December 2010 to March 2011, eliminating barge transportation on much of the upper Columbia River and all of the Snake River. The impact of losing a major mode of transportation was projected by the shippers, carriers, and ports on the river to be substantial, and the impact on demands of other modes of transportation dramatic. This study, in real time, took advantage of the Columbia-Snake system disruption to determine the dynamics of the overall process and the impacts of such a temporary outage induced change. It reports specifically on the Pacific Northwest wheat industry, which comprises 75 percent of downriver river commodity movement. A transportation disruption like that of the extended lock outage on the Columbia-Snake River had previously never been executed in the United States. This study allowed the authors to evaluate the logistic, economic, and environmental impact of a sustained halt in barge transportation. Overall, Columbia-Snake River stakeholders were well prepared and managed to navigate the disruption in transportation without incurring exorbitant costs, with a net cost per bushel of six cents.
  Authors: Simmons, Sara V.; Casavant, Kenneth L.; Sage, Jeremy
  Authors: Simmons, Sara V.; Casavant, Kenneth L.; Sage, Jeremy
  Year: 2013
  Document Type: Paper
  Subject: Freight Transportation; Marine Transportation
  Session: 265
  Paper Number: 13-4276
  Practice-Ready: Yes
• Wholesale Hub Locations in Food Supply Chain Systems
  Authors: Etemadnia, Hamideh
  Authors: Etemadnia, Hamideh
  Year: 2013
  Document Type: Presentation
  Subject: Freight Transportation; Marine Transportation
  Session: 265
  Paper Number: 13-2886
• Real-Time Assessment of Columbia-Snake River Extended Lock Outage: Process and Impacts
  Authors: Casavant, Kenneth
  Authors: Casavant, Kenneth
  Year: 2013
  Document Type: Presentation
  Subject: Freight Transportation; Marine Transportation
  Session: 265
  Paper Number: 13-4276
• Assessing Relationship Between Transport Infrastructure and Agriculture Productivity in European Countries: Application of Data Envelopment Analysis and Malmquist Index
  Authors: Chaudhry, Muhammad Omer
  Authors: Chaudhry, Muhammad Omer
  Year: 2013
  Document Type: Presentation
  Subject: Freight Transportation; Marine Transportation
  Session: 265
  Paper Number: 13-4685