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

Transportation Safety Performance Of Us Bus Transit Agencies And Population Density: A Cross-Sectional Analysis (2008-2014), Ilker Karaca, Peter T. Savolainen Jan 2018

Transportation Safety Performance Of Us Bus Transit Agencies And Population Density: A Cross-Sectional Analysis (2008-2014), Ilker Karaca, Peter T. Savolainen

Finance Conference Papers, Posters, and Proceedings

The paper examines the transportation safety performance of transit agencies providing public bus service in the US by using data from the National Transit Database (NTD)

Uses NTD data for a seven-year period from 2008 to 2014 • 3,853 observations for 651 public transportation agencies in 50 states

Seven types of bus transit fatalities and injuries (including passengers, operators, pedestrians, bicyclists)

Main explanatory variable: urban density obtained from the US Census figures

Other explanatory variables: total agency revenue miles, unlinked passenger trips, agency fleet size, and urban population


Challenges In Technology Adoption In Indian Public Distribution System: A Quality Management Approach, Varun Chhabra, Shweta Chopra, Prashant Rajan Jan 2018

Challenges In Technology Adoption In Indian Public Distribution System: A Quality Management Approach, Varun Chhabra, Shweta Chopra, Prashant Rajan

Agricultural and Biosystems Engineering Publications

Information and communication technologies are being used by various countries to provide faster and transparent services to their citizens through e-government initiatives. A large population in developing countries remain deprived of these services due to lack of skills, training and infrastructure. Local community intermediaries with necessary skills are employed to provide these services to beneficiaries. The purpose of this study was to identify and prioritise the challenges faced by intermediaries in adopting e-government technology. Quality management tools of list reduction, affinity diagram and Pareto chart were used for this purpose. Utilising quality management tools is an unconventional approach to problem ...


Modeling Disruption In A Fresh Produce Supply Chain, Cameron A. Mackenzie, Aruna Apte Jan 2016

Modeling Disruption In A Fresh Produce Supply Chain, Cameron A. Mackenzie, Aruna Apte

Industrial and Manufacturing Systems Engineering Publications

Purpose—The purpose of this paper is to quantify elements that make fresh produce supply chains vulnerable to disruptions and to quantify the benefits of different disruption management strategies.

Design/methodology/approach—This paper develops a mathematical model of a disruption in a fresh produce supply chain and analyzes the relationships among variables.

Findings—The model determines the optimal safety stock as a function of the perishability of the produce, the length of time it takes to find the contamination, the level of demand during the disruption, and the amount of produce that can be rerouted. Applying the model to ...


A Hybrid Simulation Model Of Inbound Logistics Operations In Regional Food Supply Systems, Anuj Mittal, Caroline C. Krejci Dec 2015

A Hybrid Simulation Model Of Inbound Logistics Operations In Regional Food Supply Systems, Anuj Mittal, Caroline C. Krejci

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Regional food hubs aggregate, distribute, and market local food, with a goal of promoting environmental and social sustainability. They provide an alternative distribution channel through which small-scale producers can access wholesale markets. However, food hubs face many barriers to growth and success. In particular, they are often unable to achieve the logistical and operational efficiencies that characterize conventional large-scale food distribution. One possible method of improving food hub efficiency targets inbound logistics operations - specifically, the scheduling of producer deliveries to the food hub. In this paper, we describe a hybrid simulation model of the inbound logistics operations of a food ...


Factors Considered In The Development Of Curricular Content In Engineering Technology For Diverse Audiences, Gretchen A. Mosher, Chad M. Laux Nov 2012

Factors Considered In The Development Of Curricular Content In Engineering Technology For Diverse Audiences, Gretchen A. Mosher, Chad M. Laux

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Supply chains which handle and process bulk materials such as food ingredients and food stuffs have unique needs and challenges. Bulk material supply chains are characterized by the aggregation of large, homogeneous lots of product intended for a wide spectrum of end uses. Transportation and storage functions are also completed within a large-scale system, which add complexity to the management of these types of supply chains (Thakur & Hurburgh, 2009). Uncertainty and risk management are especially challenging.

The systems approach of engineering technology offers strategies for managing operations, risk and uncertainty in bulk materials supply chains. Furthermore, engineering technology graduates often ...


Mapping Potential Foodsheds In Iowa: A System Optimization Modeling Approach, Guiping Hu, Randy Boeckenstedt, Lizhi Wang, Susan W. Arendt Jan 2012

Mapping Potential Foodsheds In Iowa: A System Optimization Modeling Approach, Guiping Hu, Randy Boeckenstedt, Lizhi Wang, Susan W. Arendt

Leopold Center Completed Grant Reports

Linear programming tools are used to gauge regional potential for local diversified agriculture required to meet the dietary needs of the population.


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 ...


Handling Material Problems As They Arise, David P. Sly Mar 2011

Handling Material Problems As They Arise, David P. Sly

Industrial and Manufacturing Systems Engineering Publications

No abstract provided.


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.