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Articles 31 - 60 of 67

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

A Pomdp Model For Guiding Taxi Cruising In A Congested Urban City, Lucas Agussurja, Hoong Chuin Lau Nov 2011

A Pomdp Model For Guiding Taxi Cruising In A Congested Urban City, Lucas Agussurja, Hoong Chuin Lau

Research Collection School Of Information Systems

We consider a partially observable Markov decision process (POMDP) model for improving a taxi agent cruising decision in a congested urban city. Using real-world data provided by a large taxi company in Singapore as a guide, we derive the state transition function of the POMDP. Specifically, we model the cruising behavior of the drivers as continuous-time Markov chains. We then apply dynamic programming algorithm for finding the optimal policy of the driver agent. Using a simulation, we show that this policy is significantly better than a greedy policy in congested road network.


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 ...


Delayed-Bang Approach Towards More Sustainable Critical Infrastructure Risk Management, C. Ariel Pinto, Michael K. Mcshane, Abhishek S. Pathak Jan 2011

Delayed-Bang Approach Towards More Sustainable Critical Infrastructure Risk Management, C. Ariel Pinto, Michael K. Mcshane, Abhishek S. Pathak

Finance Faculty Publications

This article describes the Delayed Bang Approach for determining the value of risk management alternatives in critical infrastructure security. The discussion includes (1) the need for sustainable risk management (2) the importance of time valuation in evaluating competing loss prevention and loss reduction alternatives, (3) the convergence of deterministic engineering economics, survivability analysis, and probabilistic analysis, and (4) hypothetical examples of the Delayed-Bang Approach and significance towards more sustainable risk management.


A Service Choice Model For Optimizing Taxi Service Delivery, Shih-Fen Cheng, Xin Qu Oct 2009

A Service Choice Model For Optimizing Taxi Service Delivery, Shih-Fen Cheng, Xin Qu

Research Collection School Of Information Systems

Taxi service has undergone radical revamp in recent years. In particular, significant investments in communication system and GPS devices have improved quality of taxi services through better dispatches. In this paper, we propose to leverage on such infrastructure and build a service choice model that helps individual drivers in deciding whether to serve a specific taxi stand or not. We demonstrate the value of our model by applying it to a real-world scenario. We also highlight interesting new potential approaches that could significantly improve the quality of taxi services.


Using Quality Management Systems To Meet Food Traceability Requirements Of The Bioterrorism Act Of 2002, Chad M. Laux, Charles R. Hurburgh Jr., Gretchen A. Mosher Nov 2008

Using Quality Management Systems To Meet Food Traceability Requirements Of The Bioterrorism Act Of 2002, Chad M. Laux, Charles R. Hurburgh Jr., Gretchen A. Mosher

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

The events of 9/11 intensified concerns about the safety of food. Legislation requirements for food traceability present challenges for US grain handlers in meeting new regulations of the Food and Drug Administration (FDA) (Iowa Grain Quality Initiative, 2006). With the goal of protecting the US food supply, the Public Health Security and Bioterrorism Preparedness and Response Act of 2002 (known as ‘the Act’).


Research On Application Of Rfid In Smart Gate Of Container Terminal, Jiying Song Sep 2008

Research On Application Of Rfid In Smart Gate Of Container Terminal, Jiying Song

Faculty Publications - Department of Professional Studies

With the rapid development of logistics, the operation and management of logistics enterprise becomes more complex and changeable. Under the background, it has become the urgent problem for the policy-maker to resolve that how to construct the highly effective information system, how to apply the information technology, how to carry on the all-the-way tracking, how to enhance the collection, processing and serviceability of information and how to shorten the exchange of information and the operation time. Along with the rapidly growth of domestic as well as domestic and international volume of trade and the fast development of container fleet, that ...


Cosign: A Parallel Algorithm For Coordinated Traffic Signal Control, Shih-Fen Cheng, Marina A. Epelman, Robert L. Smith Dec 2006

Cosign: A Parallel Algorithm For Coordinated Traffic Signal Control, Shih-Fen Cheng, Marina A. Epelman, Robert L. Smith

Research Collection School Of Information Systems

The problem of finding optimal coordinated signal timing plans for a large number of traffic signals is a challenging problem because of the exponential growth in the number of joint timing plans that need to be explored as the network size grows. In this paper, the game-theoretic paradigm of fictitious play to iteratively search for a coordinated signal timing plan is employed, which improves a system-wide performance criterion for a traffic network. The algorithm is robustly scalable to realistic-size networks modeled with high-fidelity simulations. Results of a case study for the city of Troy, MI, where there are 75 signalized ...


Partial Adjustable Autonomy In Multi Agent Environment And Its Application To Military Logistics, Hoong Chuin Lau, Lucas Agussurja, R. Thagarajoo Sep 2005

Partial Adjustable Autonomy In Multi Agent Environment And Its Application To Military Logistics, Hoong Chuin Lau, Lucas Agussurja, R. Thagarajoo

Research Collection School Of Information Systems

In a rapidly changing environment, the behavior and decision-making power of agents may have to be adaptive with respect to a fluctuating autonomy. In this paper, a centralized fuzzy approach is proposed to sense changes in environmental conditions and translate them to changes in agent autonomy. A distributed coalition formation scheme is then applied to allow agents in the new autonomy to renegotiate to establish schedule consistency. The proposed framework is applied to a real-time logistics control of a military hazardous material storage facility under peace-to-war transition.


Dispatching Vehicles In A Mega Container Terminal, Ebru K. Bish, Frank Y. Chen, Thin Yin Leong, Barry L. Nelson, Jonathan W. C. Ng, David Simchi-Levi Aug 2005

Dispatching Vehicles In A Mega Container Terminal, Ebru K. Bish, Frank Y. Chen, Thin Yin Leong, Barry L. Nelson, Jonathan W. C. Ng, David Simchi-Levi

Research Collection School Of Information Systems

We consider a container terminal discharging and uploading containers to and from ships. The discharged containers are stored at prespecified storage locations in the terminal yard. Containers are moved between the ship area and the yard using a fleet of vehicles, each of which can carry one container at a time. The problem is to dispatch vehicles to the containers so as to minimize the total time it takes to serve a ship, which is the total time it takes to discharge all containers from the ship and upload new containers onto the ship. We develop easily implementable heuristic algorithms ...


Transport Logistics Planning With Service-Level Constraints, Hoong Chuin Lau, K. M. Ng, Xintao Wu Jul 2004

Transport Logistics Planning With Service-Level Constraints, Hoong Chuin Lau, K. M. Ng, Xintao Wu

Research Collection School Of Information Systems

In this paper, we study a logistics problem arising in military transport planning. A military organization operates a large fleet of vehicles in a depot to serve the requests of various operational units. Each request has a fixed start and end time, and is served by a prescribed number of vehicles. We address the following two problems: (1) how many vehicles are at least needed to meet a given service level of requests; and (2) suppose we allow each request to shift its start time by a constant duration, call all the requests be met? A Niche genetic algorithm, together ...


The Engineering Learning Portal For Problem Solving: Experience In A Large Engineering Economy Class, Sarah M. Ryan, John K. Jackman, Frank E. Peters, Sigurdur Olafsson, Mary Huba Jan 2004

The Engineering Learning Portal For Problem Solving: Experience In A Large Engineering Economy Class, Sarah M. Ryan, John K. Jackman, Frank E. Peters, Sigurdur Olafsson, Mary Huba

Industrial and Manufacturing Systems Engineering Publications

In an effort to improve students' problem solving skills with information technology across the industrial engineering curriculum, we created an Internet based problem-solving environment. The module implemented for engineering economy presents a realistic problem that establishes connections with other courses. The design of the learning environment promotes metacognitive skill development by requiring students to explain each major problem solving action taken and to evaluate their own progress toward a solution. Experience in two successive semesters of a large introductory course indicates that information technology can be used effectively to create opportunities for students to collaboratively solve realistic engineering problems, thereby ...


Analysis Of A New Vehicle Scheduling And Location Problem, Ebru K. Bish, Thin Yin Leong, Chun-Lun Li, Jonathan W. C. Ng, David Simchi-Levi Aug 2001

Analysis Of A New Vehicle Scheduling And Location Problem, Ebru K. Bish, Thin Yin Leong, Chun-Lun Li, Jonathan W. C. Ng, David Simchi-Levi

Research Collection School Of Information Systems

We consider a container terminal discharging containers from a ship and locating them in the terminal yard. Each container has a number of potential locations in the yard where it can be stored. Containers are moved from the ship to the yard using a fleet of vehicles, each of which can carry one container at a time. The problem is to assign each container to a yard location and dispatch vehicles to the containers so as to minimize the time it takes to download all the containers from the ship. We show that the problem is NP-hard and develop a ...


Telecommunications And Its Practical Application, Athol, Massachusetts, Center For Economic Development Jan 1997

Telecommunications And Its Practical Application, Athol, Massachusetts, Center For Economic Development

Center for Economic Development Technical Reports

Rural areas have been experiencing a transition in their economic and social structure. Traditional industries such as agriculture, manufacturing, and resource extraction have been declining. The result has been a displacement of labor in rural areas and instability within rural economies. Upwards of three quarters of rural counties have experienced outmigration in the last decade. Per capita income in rural areas is only two-thirds that of their urban counterparts, and rural poverty rates exceed those in urban areas. Rural areas have traditionally considering how the quality of their education, health, and government services can be incorporated into their overall development ...


Interstate Gas Pipeline Ratemaking And Contract Implications, Henry E. Brown Mar 1983

Interstate Gas Pipeline Ratemaking And Contract Implications, Henry E. Brown

Natural Gas Symposium: Contract Solutions for the Future of Regulatory Environment (March 24-25)

61 pages.

Contains references.

Contains 7 attachments.


Creditors’ Rights Involved In The Production And Sale Of Natural Gas, William M. Schultz Mar 1983

Creditors’ Rights Involved In The Production And Sale Of Natural Gas, William M. Schultz

Natural Gas Symposium: Contract Solutions for the Future of Regulatory Environment (March 24-25)

101 pages (includes forms).

Contains 6 attachments.


Agenda: Natural Gas Symposium: Contract Solutions For The Future Of Regulatory Environment, University Of Colorado Boulder. Natural Resources Law Center, University Of Houston. Law Center Mar 1983

Agenda: Natural Gas Symposium: Contract Solutions For The Future Of Regulatory Environment, University Of Colorado Boulder. Natural Resources Law Center, University Of Houston. Law Center

Natural Gas Symposium: Contract Solutions for the Future of Regulatory Environment (March 24-25)

Contents:

The natural gas industry in transition / Ruth A. Maurer -- Legislative prospects for wellhead pricing of natural gas / Richard G. Morgan -- Off-system sales : will they ever return? : the interstate side / Robert C. McHugh -- Off-system sales : will they ever return? / Paul F. O'Konski -- Contractual and other considerations affecting producers, pipelines and distributors during current period of market demand constraints / Michael J. Manning -- Section 311 and 312 of the Natural Gas Policy Act of 1978 and Hinshaw pipelines / Lauren Eaton -- Drafting and interpreting sensitive gas purchase contract provisions / William D. Watson -- Creditors' rights involved in the production and sale of natural ...


Section 311 And 312 Of The Natural Gas Policy Act Of 1978 And Hinshaw Pipelines, Lauren Eaton Mar 1983

Section 311 And 312 Of The Natural Gas Policy Act Of 1978 And Hinshaw Pipelines, Lauren Eaton

Natural Gas Symposium: Contract Solutions for the Future of Regulatory Environment (March 24-25)

5 pages.


Drafting And Interpreting Sensitive Gas Purchase Contract Provisions, William D. Watson Mar 1983

Drafting And Interpreting Sensitive Gas Purchase Contract Provisions, William D. Watson

Natural Gas Symposium: Contract Solutions for the Future of Regulatory Environment (March 24-25)

8 pages.


Off-System Sales: Will They Ever Return?, Paul F. O'Konski Mar 1983

Off-System Sales: Will They Ever Return?, Paul F. O'Konski

Natural Gas Symposium: Contract Solutions for the Future of Regulatory Environment (March 24-25)

5 pages.


Off-System Sales – Will They Ever Return? (The Interstate Side), Robert C. Mchugh Mar 1983

Off-System Sales – Will They Ever Return? (The Interstate Side), Robert C. Mchugh

Natural Gas Symposium: Contract Solutions for the Future of Regulatory Environment (March 24-25)

27 pages (includes illustrations).

Contains 2 pages of references.

Contains 1 attachment.


Legislative Prospects For Wellhead Pricing Of Natural Gas, Richard G. Morgan Mar 1983

Legislative Prospects For Wellhead Pricing Of Natural Gas, Richard G. Morgan

Natural Gas Symposium: Contract Solutions for the Future of Regulatory Environment (March 24-25)

162 pages.

Contains 16 attachments.


The Natural Gas Industry In Transition, Ruth A. Maurer Mar 1983

The Natural Gas Industry In Transition, Ruth A. Maurer

Natural Gas Symposium: Contract Solutions for the Future of Regulatory Environment (March 24-25)

10 pages (includes illustrations).


Contractual And Other Considerations Affecting Producers, Pipelines And Distributors During Current Period Of Market Demand Constraints [Outline], Michael J. Manning Mar 1983

Contractual And Other Considerations Affecting Producers, Pipelines And Distributors During Current Period Of Market Demand Constraints [Outline], Michael J. Manning

Natural Gas Symposium: Contract Solutions for the Future of Regulatory Environment (March 24-25)

6 pages.


Dickey-Lincoln School Lakes Project Transmission Studies Environmental Impact Statement: Appendix J: Historical-Archeological Impact Study, Albert A. Dekin Jr., Bruce R. Donaldson, J. Lloyd Pepper, Paul A. Robinson, Edward A. Hession, Judith A. Rasson, Public Archaeology Facility Department Of Anthropology, United States Department Of Energy Jan 1978

Dickey-Lincoln School Lakes Project Transmission Studies Environmental Impact Statement: Appendix J: Historical-Archeological Impact Study, Albert A. Dekin Jr., Bruce R. Donaldson, J. Lloyd Pepper, Paul A. Robinson, Edward A. Hession, Judith A. Rasson, Public Archaeology Facility Department Of Anthropology, United States Department Of Energy

Dickey-Lincoln School Lakes Project

The report assessing cultural resources for the Dickey/Lincoln School Transmission Project consists of five narrative chapters, a topical bibliography, and five appendices. The scope of work, together with the USDI guidelines for cultural resource survey (included in Appendix E), comprise an attitude and approach toward prehistory which is in accord with the current state of the art, not simply in terms of cultural resource management but also in terms of contemporary standards generally recognized by practitioners of anthropological archaeology.


Ecological Resources Impact Study. Map Volume, United States. Department Of Energy Jan 1978

Ecological Resources Impact Study. Map Volume, United States. Department Of Energy

Dickey-Lincoln School Lakes Project

Environmental Assessment of Alternative Routes, Ecological Resources Impact Study, Maps and Legend land cover types


Visual-Recreation Resources Impact Study. Map Volume, United States. Department Of Energy Jan 1978

Visual-Recreation Resources Impact Study. Map Volume, United States. Department Of Energy

Dickey-Lincoln School Lakes Project

Environmental Assessment of Alternative Routes, Visual/Recreational Resources Impact Studies, Maps of Recreational Resources


Report Of The Citizens' Dickey-Lincoln Project Impact Review Committee To Governor James B. Longley, John D. Robinson, James B. Longley Jan 1977

Report Of The Citizens' Dickey-Lincoln Project Impact Review Committee To Governor James B. Longley, John D. Robinson, James B. Longley

Dickey-Lincoln School Lakes Project

The construction of the Dickey-Lincoln Hydroelectric Project. To examine, in depth, the proposal and its impact as seen by various segments of our society. The report will identify the factors that must carry the main weight in making a final determination.


Social Impact Summary : Dickey-Lincoln School Lakes Project / Prepared For The Department Of The Army, Corps Of Engineers, New England Division, Edward C. Jordan Company, Inc. Jan 1977

Social Impact Summary : Dickey-Lincoln School Lakes Project / Prepared For The Department Of The Army, Corps Of Engineers, New England Division, Edward C. Jordan Company, Inc.

Dickey-Lincoln School Lakes Project

The Dickey-Lincoln Hydroelectric Dam is a water resources project proposed by the Federal Government (U. S. Army Corps of Engineers). Therefore, in accordance with the National Environmental Policy Act, the Corps of Engineers is required to prepare an environmental impact statement (EIS) on the project. A federal plan or project such as Dickey-Lincoln should take into account its effect upon man's health, safety, welfare and economic well-being, as well as effects upon the surrounding environment. More importantly, project plans should be evaluated in a "manner calculated to encourage harmony between man and his environment." In other words, project plans ...


Recommendations Of Alternative System Plans And Transmission Corridors For The Dickey/Lincoln School Hydroelectric Project, Vtn Environmental Sciences (Firm), Interior Jan 1976

Recommendations Of Alternative System Plans And Transmission Corridors For The Dickey/Lincoln School Hydroelectric Project, Vtn Environmental Sciences (Firm), Interior

Dickey-Lincoln School Lakes Project

This second volume of the Assessment of Alternative Power Transmission Corri-dors related to the Dickey Lincoln/School Hydroelectric Project, contains all relevant background materials to support the mapping and analysis of en-vironmental resource information. Narrative explaining what information was evaluated and the sources and reasons for its consideration are integral to this assessment.


Transmission Planning Summary : Dickey-Lincoln School Lakes Project Transmission Studies, United States Department Of Interior Jan 1976

Transmission Planning Summary : Dickey-Lincoln School Lakes Project Transmission Studies, United States Department Of Interior

Dickey-Lincoln School Lakes Project

This report summarizes the results of system planning, environmental, and location studies for transmission facilities associated with the proposed Dickey-Lincoln School Lakes Project in northern Maine. The studies recommend the construction of two 345-kV transmission circuits from a substation near the project along a route through western Maine into northern New Hampshire and Vermont. The plan will integrate the power produced by the project into the New England Power Pool Transmission System. Five alternate integration plans were identified and studied. Of the five plans, the recommended plan, which calls for the lines to be suspended from a single row of ...