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Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering

A Framework For Collaboration Among Regional Food System Participants, Anuj Mittal, Veronica M. White, Caroline Krejci Jan 2017

A Framework For Collaboration Among Regional Food System Participants, Anuj Mittal, Veronica M. White, Caroline Krejci

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Horizontal collaboration can benefit supply chain partners by increasing their collective competitiveness. However, each participant in the collaboration typically maintains its own individual business objectives. Therefore, such collaborations require a standard operational framework that specifies the allocation of participant responsibilities and benefits. While horizontal collaboration in regional food supply chains is common, very few participants have adopted this type of standard framework. As a result, the sharing of resources and information among partners tends to be inefficient and potentially contentious. This paper describes our efforts to formalize a supply chain collaboration that has developed among several regional food hubs and ...


Analysis Of Food Hub Commerce And Participation Using Agent-Based Modeling: Integrating Financial And Social Drivers, Caroline C. Krejci, Richard Stone, Michael Dorneich, Stephen B. Gilbert Feb 2016

Analysis Of Food Hub Commerce And Participation Using Agent-Based Modeling: Integrating Financial And Social Drivers, Caroline C. Krejci, Richard Stone, Michael Dorneich, Stephen B. Gilbert

Industrial and Manufacturing Systems Engineering Publications

Objective: Factors influencing long-term viability of an intermediated regional food supply network (food hub) were modeled using agent-based modeling techniques informed by interview data gathered from food hub participants.

Background: Previous analyses of food hub dynamics focused primarily on financial drivers rather than social factors and have not used mathematical models.

Method: Based on qualitative and quantitative data gathered from 22 customers and 11 vendors at a midwestern food hub, an agent-based model (ABM) was created with distinct consumer personas characterizing the range of consumer priorities. A comparison study determined if the ABM behaved differently than a model based on ...


Improving Regional Food Hub Operational Efficiency With Lean Practices, Anuj Mittal, Michelle Zugg, Caroline Krejci Jan 2016

Improving Regional Food Hub Operational Efficiency With Lean Practices, Anuj Mittal, Michelle Zugg, Caroline Krejci

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Food hubs aggregate and distribute regionally-produced food and help small and mid-sized farmers find markets for their products. They provide a valuable service as an intermediary between consumers and farmers who value sustainable food systems. However, their internal operations are often highly inefficient, and as a result they struggle to meet their customers’ expectations. To maintain low operational costs, food hubs often depend upon volunteer labor. However, an inconsistent and improperly trained volunteer labor force can lead to inventory and order fulfillment errors. Additionally, because many food hubs are unable to afford sophisticated inventory management software, they employ ad-hoc methods ...


Assessing Values-Based Sourcing Strategies In Regional Food Supply Networks: An Agent-Based Approach, Caroline C. Krejci, Michael C. Dorneich, Richard T. Stone Oct 2015

Assessing Values-Based Sourcing Strategies In Regional Food Supply Networks: An Agent-Based Approach, Caroline C. Krejci, Michael C. Dorneich, Richard T. Stone

Industrial and Manufacturing Systems Engineering Publications

The recent increase in demand for regionally produced food has resulted in a need for more efficient distribution methods. To connect regional food producers and consumers, intermediated regional food supply networks have developed. The intermediary, known as a regional food hub, serves as an aggregation point for products and information. It may also act as a filter to ensure that the requirements of both producers and consumers are consistently met. This paper describes an empirically based agent-based model of a regional food network in central Iowa that is intermediated by a food hub. The model was used to test a ...


Market Competition And Social Welfare Analysis For E10 And E85 With A 1 Game Theory Model, Minwen Yang, Guiping Hu Jan 2013

Market Competition And Social Welfare Analysis For E10 And E85 With A 1 Game Theory Model, Minwen Yang, Guiping Hu

Industrial and Manufacturing Systems Engineering Publications

With the increasing concerns about the petroleum reserve, and the global warming, people have been looking for renewable and environmental friendly energy sources to supplement and replace fossil fuels. Ethanol has been an appropriate substitute to fossil fuels. Currently, E10 and E85 are two of the main transportation fuels with ethanol and they are competing in the market. This study investigates the competition between E10 and E85 with an oligopoly Cournot model and derives three indicators from the equilibrium to measure the performance of the market: E85's market share, E85 price premium which indicate the consumers' additional willingness to ...


An Optimization Approach To Assessing The Self-Sustainability Potential Of Food Demand In The Midwestern United States, Guiping Hu, Lizhi Wang, Susan W. Arendt, Randy Boeckenstedt Oct 2011

An Optimization Approach To Assessing The Self-Sustainability Potential Of Food Demand In The Midwestern United States, Guiping Hu, Lizhi Wang, Susan W. Arendt, Randy Boeckenstedt

Apparel, Events and Hospitality Management Publications

Conventional agriculture faces significant challenges as world population grows, food demand increases, and mobility becomes increasingly constrained. Reducing the distance food needs to travel is an important goal of sustainability and resiliency, particularly in the context of a variety of transportation challenges. In this study, we developed a linear programming optimization method to assess the potential of regions to meet dietary requirements with more localized and diversified agricultural systems. Emphasis is on minimizing the distance between population centers and available cropland, accounting for variations in yield among 40 of the most marketable food crops that can be grown in the ...


Toward A More Sustainable, Local Food Production System—From A System Modeling Perspective, Guiping Hu, Lizhi Wang, Susan W. Arendt, Randy Boeckenstedt Jan 2011

Toward A More Sustainable, Local Food Production System—From A System Modeling Perspective, Guiping Hu, Lizhi Wang, Susan W. Arendt, Randy Boeckenstedt

Apparel, Events and Hospitality Management Publications

Localized food production and sourcing is drawing increasing attention due to environmental and health considerations. In this study, we used population, dietary and geographical information to map potential foodsheds with emphasis on minimizing total geographic distribution. We also developed innovative protocols, metrics and optimization methods to analyze the foodshed localization of geographic areas. We used data from Iowa to analyze and validate the optimization model. This study can also be extended to other regions outside of Iowa.


Analyzing Sustainable, Localized Food Production Systems With A Systematic Optimization Model, Guiping Hu, Lizhi Wang, Susan W. Arendt, Randy Boeckenstedt Jan 2011

Analyzing Sustainable, Localized Food Production Systems With A Systematic Optimization Model, Guiping Hu, Lizhi Wang, Susan W. Arendt, Randy Boeckenstedt

Apparel, Events and Hospitality Management Publications

Localized food production and sourcing is drawing increasing attention due to environmental and health considerations. In this study, we used population, dietary and geographical information to map potential foodsheds with emphasis on minimizing total geographic distribution. We also developed innovative protocols, metrics and optimization methods to analyze the foodshed localization of geographic areas. We used data from Iowa to analyze and validate the optimization model. This study can also be extended to other regions outside of Iowa.