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Articles 1 - 30 of 148
Full-Text Articles in Operations and Supply Chain Management
Virtues Of Sorghum: Utilization And Supply Chain Management, Lloyd W. Rooney
Virtues Of Sorghum: Utilization And Supply Chain Management, Lloyd W. Rooney
INTSORMIL Presentations
Discusses the consumer demands, value-added supply chain, strategy for value-added products, functionality of sorghums and millets, sorghum food use in Central America, plant breeding and improvement of grain quality, sorghum image, special sorghums as a particularly healthy food item, food utilization, improving sorghum quality, effect of molds, insects, and weathering on grain quality, and mycotoxins.
Coordinating Production And Recycling Decisions With Stochastic Demand And Return, Jianmai Shi, Guoqing Zhang, Jichang Sha, Saman Hassanzadeh Amin
Coordinating Production And Recycling Decisions With Stochastic Demand And Return, Jianmai Shi, Guoqing Zhang, Jichang Sha, Saman Hassanzadeh Amin
Mechanical, Automotive & Materials Engineering Publications
In this paper, the joint production and recycling problem is investigated for a hybrid manufacturing and remanufacturing system where brand-new products are produced in the manufacturing plant and recycled products are remanufactured into as-new products in the remanufacturing facility. Both the brand-new products and remanufactured products are used to satisfy customer demands. Returns of used products that are recycled from customers are assumed to be stochastic and nonlinearly price-dependent. A mathematical model is proposed to maximize the overall profit of the system through simultaneously optimizing the production and recycling decisions, subject to two capacity constraints — the manufacturing capacity and …
Business Process Management: Helping Organizations Remain Competitive, Kevin P. Duffy, Jeremy Humble
Business Process Management: Helping Organizations Remain Competitive, Kevin P. Duffy, Jeremy Humble
ISSCM Faculty Publications
Business process management involves the examination of business processes in organizations, in order to make them more effective and efficient. BPM changes the focus of analysis from the organization as a whole to the organizational process. A process is a series of steps that lead to an outcome and may be simple or complex, depending on the type and number of steps involved. A process within an organization by which the company either introduces new products or refreshes old ones with new features, thus providing the market with new product offerings.
How Purchasing Departments Can Take Advantage Of The Sluggish Economy To Achieve Strategic Opportunities Through Best Practices, Peter O'Reilly
How Purchasing Departments Can Take Advantage Of The Sluggish Economy To Achieve Strategic Opportunities Through Best Practices, Peter O'Reilly
Publications
Presentation objectives:
- What is a Strategic Best Practice and Why is it Important to a Purchasing Department?
Multi-Product Budget-Constrained Acquistion And Pricing With Uncertain Demand And Supplier Quantity Discounts, Jianmai Shi, Guoqing Zhang
Multi-Product Budget-Constrained Acquistion And Pricing With Uncertain Demand And Supplier Quantity Discounts, Jianmai Shi, Guoqing Zhang
Mechanical, Automotive & Materials Engineering Publications
We consider the joint acquisition and pricing problem where the retailer sells multiple products with uncertain demands and the suppliers provide all unit quantity discounts.The problem is to determine the optimal acquisition quantities and selling prices so as to maximize the retailer’s expected profit, subject to a budget constraint. This is the first extension to consider supplier discounts in the constrained multi-product newsvendor pricing problem. We establish a mixed integer nonlinear programming (MINLP) model to formulate the problem, and developaLagrangian based solution approach.Computational results for the test problems involving up to thousand products are reported, which show that the Lagrangian …
Tls Newsletter Volume 4, Edition 3. November, 2010, Unf Transportation And Logistics Society
Tls Newsletter Volume 4, Edition 3. November, 2010, Unf Transportation And Logistics Society
Transportation & Logistics Society Newsletter
Inside the Newsletter: In the Know--A Look Inside Jaxport. General Meeting and Professionals In Logistics Panel 11/3/2010. Life after Graduation with Rachel Cecil. Important Upcoming Dates. Get to Know TLS Secretary & Newsletter Editor Matthew Bullard.
Learning Computational Thinking From Rapid Digital Game Creation, Praveen Kuruvada, Daniel Asamoah, Nikunj Dalal, Subhash Kak
Learning Computational Thinking From Rapid Digital Game Creation, Praveen Kuruvada, Daniel Asamoah, Nikunj Dalal, Subhash Kak
ISSCM Faculty Publications
Computational Thinking (CT) has been described as a universally applicable ability such as reading and writing. In this paper, we describe an innovative pedagogy using Rapid Digital Game Creation (RDGC) for learning CT skills. RDGC involves the rapid building of digital games with high-level software that requires little or no programming knowledge. We analyze how RDGC supports various CT concepts and how it may be mapped to equivalent Java concepts by building the same game using both RDGC and Java. We discuss the potential benefits of this approach for attracting computing majors, as a precursor to learning formal programming languages, …
The Impact Of Market Focus On Operations Practices, Tritos Laosirihongthong, Keah Choon Tan, Vijay R. Kannan
The Impact Of Market Focus On Operations Practices, Tritos Laosirihongthong, Keah Choon Tan, Vijay R. Kannan
Management Faculty Publications
A key element of successful organisations is the alignment of their strategy and tactics. This study explores the relationship between a firm’s competitive strategy and its operations practices in the context of a developing economy. Two competitive strategies are examined; a niche market strategy characterised by targeting specific market segments, and a broad market strategy characterised by serving a wide range of market segments. Three sets of operations practices consistent with the adoption of lean manufacturing, Total Quality Management, and relationship development in a supply chain context, are explored. Using survey data from senior managers in Thailand, results show that …
Benchmarking And Evaluating The Comparative Efficiency Of Urban Paratransit Systems In The United States: A Data Envelopment Analysis Approach, Hokey Min, Thomas E. Lambert
Benchmarking And Evaluating The Comparative Efficiency Of Urban Paratransit Systems In The United States: A Data Envelopment Analysis Approach, Hokey Min, Thomas E. Lambert
Journal of Transportation Management
Passenger rail service is perceived to provide important benefits to Michigan communities. However, the extent of these benefits has never been quantified in a systematic way. The study reported on here involved the performance of a broad based assessment of the community level benefits of passenger rail serv ice. The main objective of the research project was to estimate the full range of these benefits at the community level, as opposed to at the state level. Benefits were estimated for individual travelers, Amtrak expenditures, and local businesses. This research indicates local communities currently realize $62.0 million annually in benefits. Additional …
The Relationship Between Measures Of Operations Efficiency And Financial Success Of Truckload Motor Carriers: An Empirical Analysis, Ahren Johnston
The Relationship Between Measures Of Operations Efficiency And Financial Success Of Truckload Motor Carriers: An Empirical Analysis, Ahren Johnston
Journal of Transportation Management
This research paper examines the statistical relationship between clay to day performance and effi ciency measures and financial performance in the motor carrier industry. Key findings are that carriers with more miles per tractor per year, a larger average length of haul, more revenue per mile, and more revenue per tractor per week tend to perform better financially as measured in three separate models by operating ratio, return on assets, or return on equity. Unexpectedly, for the eight publicly traded carriers included in the analysis, there was a negative relationship between empty mile percentage and financial performance, indicating that carriers …
Analytical Techniques And The Air Force Logistics Readiness Officer, Bryan D. Main, William A. Cunningham Iii, Daniel D. Mattioda, Joseph B. Skipper
Analytical Techniques And The Air Force Logistics Readiness Officer, Bryan D. Main, William A. Cunningham Iii, Daniel D. Mattioda, Joseph B. Skipper
Journal of Transportation Management
The accelerated globalization of logistics activities over the last several decades has spurred a rapid expansion of port facilities all cross the world. However, the recent slowdown of international trade, coupled with a global financial crisis, has created an on-going glut of international port facilities throughout the world. Although the abundance of port facilities provides more transshipment options for carriers and shippers, it makes the port selection decision more complex and difficult. To cope with this new set of challenges, this paper proposes a hybrid data envelopment analysis (DEA)/ analytic hierarchy process (AHP) model that is designed to identify factors …
Using Artificial Neural Networks For Transport Decisions: Managerial Guidelines, Robert L. Cook, Lawrence O. Jenicke, Brian Gibson
Using Artificial Neural Networks For Transport Decisions: Managerial Guidelines, Robert L. Cook, Lawrence O. Jenicke, Brian Gibson
Journal of Transportation Management
One information technology that may be considered by transportation managers, and which is included in the portfolio of technologies that encompass TMS. is artificial neural networks (ANNs). These artificially intelligent computer decision support software provide solutions by finding and recognizing complex patterns in data. ANNs have been used successfully by transportation managers to forecast transportation demand, estimate future transport costs, schedule vehicles and shipments, route vehicles and classify earners for selection. Artificial neural networks excel in transportation decision environments that are dynamic, complex and unstructured. This article introduces ANNs to transport managers by describing ANN technological capabilities, reporting the current …
Trip Patterns In Akure, Nigeria: A Land-Use Analytical Approach, A.O. Owolabi
Trip Patterns In Akure, Nigeria: A Land-Use Analytical Approach, A.O. Owolabi
Journal of Transportation Management
For transportation planners, the use of Origin-Destination (OD) matrix adjustment, is receiving considerable attention. However, there are concerns about the validity of results, primarily related to the number and location of traffic count posts. This leads to the question “What would be the best set of traffic count posts to use in OD matrix adjustment modules?” It has been proved that solving this problem is cumbersome. There have been several attempts (either exact or heuristic approaches) to address this problem. But due to the inherent complexities, there is no efficient and easy-to-use methodology able to address situations on the scale …
Tls Newsletter Volume 4, Edition 2. October, 2010, Unf Transportation And Logistics Society
Tls Newsletter Volume 4, Edition 2. October, 2010, Unf Transportation And Logistics Society
Transportation & Logistics Society Newsletter
Inside the Newsletter: In the Know--Join TLS, Prepare for the Future. General Meeting and Young Alumni Panel Ocotber 13th. Life after Graduation with Maria Lugovets. Important Upcoming Dates. Get to know TLS Recruitment Director Joseph Finnigan
Foodshed Foundations: Law's Role In Shaping Our Food System's Future, Margaret Sova Mccabe
Foodshed Foundations: Law's Role In Shaping Our Food System's Future, Margaret Sova Mccabe
Law Faculty Scholarship
[. . .] This symposium Article analyzes how we can rethink the architecture of law based on a foodshed model to provide a greater role for local, state, and regional government in the American food system. In turn, greater roles for different levels of government may help America achieve greater efficiencies in domestic food safety, nutrition and related public health issues, sustainability, and international trade.
Americans need a greater voice in the food system. The foodshed model is a powerful vehicle that allows us to conceptualize change, allowing greater citizen participation and a more nuanced approach to food policy. The …
Gains In The Life-Cycle Of Adaptable, Self-Organizing Material Handling Systems, Jan R. Nopper, Guido Follert, Michael Ten Hompel
Gains In The Life-Cycle Of Adaptable, Self-Organizing Material Handling Systems, Jan R. Nopper, Guido Follert, Michael Ten Hompel
11th IMHRC Proceedings (Milwaukee, Wisconsin. USA – 2010)
Compared to conventional material flow controls, self-organized material handling systems and the Internet of Things in facility logistics promise several advantages during the life-cycle. Most important is the increased adaptability in case of expansions or modifications due to a consistent modular design; this also promotes an increased robustness due to clearly defined interfaces and a decreased complexity of each module. The use of RFID technology increases the availability of real-time data about the system and the transported units. However, the introduction of self-organized material handling systems also causes costs, e.g. for necessary RFID tags and readers. Against this background, it …
Design Of Cross-Chain Internet Order Fulfillment Centres, Kees Jan Roodbergen, Iris F. A. Vis, Jaap Boter
Design Of Cross-Chain Internet Order Fulfillment Centres, Kees Jan Roodbergen, Iris F. A. Vis, Jaap Boter
11th IMHRC Proceedings (Milwaukee, Wisconsin. USA – 2010)
Many consumers have embraced the option of ordering via the Internet, which has resulted in an enormous increase in direct orders compared to the times when direct ordering was done by catalogue and phone. The fulfillment process in the supply chain is an important factor for these consumers impacting how long they must wait between ordering and delivery. This fact has significantly increased the importance of the back-end fulfillment process. We present a novel supply chain design to enable cross-chain coordination of order fulfillment operations for internet sales. Shared warehousing facilities are used more and more to achieve competitive advantage. …
A Real-Time Picking And Sorting System In E-Commerce Distribution Centers, Yeming Gong, Erik M. M. Winands, Rene B. M. De Koster
A Real-Time Picking And Sorting System In E-Commerce Distribution Centers, Yeming Gong, Erik M. M. Winands, Rene B. M. De Koster
11th IMHRC Proceedings (Milwaukee, Wisconsin. USA – 2010)
Order fulfillment is the most expensive and critical operation for companies engaged in e-commerce. E-commerce distribution centers must rapidly organize the picking and sorting processes during and after the transaction has taken place, with the ongoing need to create greater responsiveness to customers. Sorting brings a relatively large setup time, which cannot be well admitted by existing polling models. We build a new stochastic polling model to describe and analyze such systems, and provide approximate explicit expressions for the complete distribution of order line waiting time for polling-based order picking systems and test their accuracy. These expressions lend themselves for …
Spiral Facility Layout Generation And Improvement Algorithm, Hatice E. Sanli, Fahrettin Eldemir
Spiral Facility Layout Generation And Improvement Algorithm, Hatice E. Sanli, Fahrettin Eldemir
11th IMHRC Proceedings (Milwaukee, Wisconsin. USA – 2010)
This study is concerned with construction and improvement of a facility layout heuristic called Spiral Facility Layout Generation and Improvement Algorithm (SFLA). The algorithm starts with positioning departments from center point and continues like a hologram from center to outside. The aim of any facility layout algorithm is to better allocate the departments within facility. SFLA is compared with the existing space filling curve methods, MCRAFT and MULTIPLE, that are available in the literature. To form an initial spiral curve, a block system is used, like the bands for MCRAFT. The width and length of the blocks are given by …
Merge Problems With High Speed Sorters, Dirk Jodin, Andreas Wolfschluckner
Merge Problems With High Speed Sorters, Dirk Jodin, Andreas Wolfschluckner
11th IMHRC Proceedings (Milwaukee, Wisconsin. USA – 2010)
To meet customer demands on distribution the necessity of sorting systems for unit loads in regard to quantity and capacity is growing up constantly.
Due to that, manufactures offer powerful sorting machines with a capacity up to 15.000 pieces per hour. Those machines are for instance Crossbelt or Tilt-Tray sorters. The output of these sorters is calculated by the equation of throughput.
The point of interest is the merge, referring to the overall efficiency of the single sorter. The motion sequence during merging has to be absolutely quick and precise to achieve exact positioning using minimized distances of the single …
Dispatching Vehicles Considering Uncertain Handling Times At Port Container Terminals, Vu Duc Nguyen, Kap Hwan Kim
Dispatching Vehicles Considering Uncertain Handling Times At Port Container Terminals, Vu Duc Nguyen, Kap Hwan Kim
11th IMHRC Proceedings (Milwaukee, Wisconsin. USA – 2010)
This paper considers the problem of vehicle dispatching at port container terminals in a dynamic environment. The problem deals with the assignment of delivery orders of containers to vehicles while taking into consideration the uncertainty in the travel times of the vehicles. Thus, a real-time vehicle dispatching algorithm is proposed for adaptation to the dynamic changes in the states of the container terminals. To evaluate the performance of the proposed algorithm, a simulation study was conducted by considering various values of decision parameters under the uncertainty in travel times. Further, the performance of the proposed algorithm was compared with those …
Investigating Possible Synergies In Intermodal Operations With Truck And Rail, G. Don Taylor, Mia K. Burns, Gary L. Whicker
Investigating Possible Synergies In Intermodal Operations With Truck And Rail, G. Don Taylor, Mia K. Burns, Gary L. Whicker
11th IMHRC Proceedings (Milwaukee, Wisconsin. USA – 2010)
As the trucking industry continues to examine ways to provide better service at lower cost, many companies are more heavily utilizing intermodal (IM) strategies between truck and rail, especially for those loads that are relatively non-critical in terms of delivery time requirements and that have longer lengths of haul. As IM business grows, supporting dray infrastructure naturally develops around IM rail yards. What is unknown is whether it is best to have a dedicated set of drivers performing dray operations or if efficiency and cost savings can result when utilizing a joint driving fleet to concurrently support IM and traditionally …
Optimization Of Costs And Service Level By Choosing The Best Customer Order Decoupling Point, Michael Schmidt, Detlef Spee
Optimization Of Costs And Service Level By Choosing The Best Customer Order Decoupling Point, Michael Schmidt, Detlef Spee
11th IMHRC Proceedings (Milwaukee, Wisconsin. USA – 2010)
The customer order decoupling point (CODP) as the link in the supply chain between processes based on uncertain information, such as sales forecasts, and certain information in the form of customer orders is crucial for production efficiency, storage costs, and the quality of logistics. This paper focuses on developing an approach for identifying a CODP that provides the highest potential for achieving business objectives. Within the context of the above-mentioned topics, this paper focuses on the interrelations and the tradeoffs that have to be made when positioning the COPD. The goal of the paper is to present an effective and …
Analysis Of Picker Blocking In Narrow-Aisle Batch Picking, Soondo Hong, Andrew L. Johnson, Brett A. Peters
Analysis Of Picker Blocking In Narrow-Aisle Batch Picking, Soondo Hong, Andrew L. Johnson, Brett A. Peters
11th IMHRC Proceedings (Milwaukee, Wisconsin. USA – 2010)
This study analyzes impacts by batch picking on picker blocking in narrow-aisle order picking, and determines appropriate batch formations for a better order picking throughput. We present multiple-pick analytical models to offer insights about picker blocking in batch picking. Several simulation studies over a variety of batching situations scrutinize order batching situations which give throughput benefits in narrow-aisle configurations by satisfying the analytical results. Our results highlight three findings for narrow-aisle batch picking processes: 1) variation of pick probability in batch picking is inevitable and is a primary driver of picker blocking; 2) a near-optimal distance-based batching algorithm can experience …
Drive And Motion Design In Material Handling Equipment, Jorg Oser, Christian Landschutzer
Drive And Motion Design In Material Handling Equipment, Jorg Oser, Christian Landschutzer
11th IMHRC Proceedings (Milwaukee, Wisconsin. USA – 2010)
Drives account in many cases up to one third of the costs of material handling equipment. This fact justifies a closer look to important drive and motion issues. Typical design criteria for drives are energy and power consumption, wear, heat and noise generation. Engineering design activities start with the generation of the system configuration, that is to make appropriate topological decisions where to locate the drives in the equipment structure. These decisions define to a great extent the functional quality of the mechanical structure and the distribution of forces in the power train. For early design stages an elasto-kinetic model …
The Effect Of Interaction Between The Production System (Ps) And A Looped Conveyor-Based Material Handling System (Lcmhs) In A Manufacturing Facility, Vernet Lasrado, Dima Nazzal
The Effect Of Interaction Between The Production System (Ps) And A Looped Conveyor-Based Material Handling System (Lcmhs) In A Manufacturing Facility, Vernet Lasrado, Dima Nazzal
11th IMHRC Proceedings (Milwaukee, Wisconsin. USA – 2010)
In this paper, we provide empirical evidence that shows the effect of the interaction between the production system (PS) and a looped conveyor-based material handling system (LCMHS) in a manufacturing facility. A rudimentary simulation model captures the interaction between the two systems. Varying several key factors, we test for a statistically significant difference in the work in process (WIP) of the production system with and without the LCMHS to find if the squared coefficient of variation (SCV) of the interarrival time distribution to the PS is affected. The results suggest the need to model the interaction between the two systems …
Multiple-Grooved Magnetic Traction Sheaves, Thorsten Schmidt, Thomas Leonhardt, Martin Anders
Multiple-Grooved Magnetic Traction Sheaves, Thorsten Schmidt, Thomas Leonhardt, Martin Anders
11th IMHRC Proceedings (Milwaukee, Wisconsin. USA – 2010)
This paper discusses a new and innovative form of traction sheaves, which can be used in many hoisting applications that are driven with wire ropes in material handling systems. By use of high performance permanent magnets, integrated in the periphery of traction sheaves, a significant increase of driving capacity is achieved. In this special case it concerns high energy magnets consisting of rare earth materials known as NdFeB magnets. These magnets provide a 20 times higher force than conventional magnets. The results of the research show that the driving capacity of traction sheaves with a round groove design can be …
Determining Warehouse Storage Location Assignments Using Clustering Analysis, Carl Egas, Dale Masel
Determining Warehouse Storage Location Assignments Using Clustering Analysis, Carl Egas, Dale Masel
11th IMHRC Proceedings (Milwaukee, Wisconsin. USA – 2010)
The methodology used to assign products to a storage location in a warehouse can have a significant impact on the amount of time required to retrieve all of the items needed to fill an order. This paper describes a methodology that uses a clustering approach to determine storage assignments, where the metric of the strength of the relationship between two stock-keeping units (SKUs) is the number of times that the SKUs appear in the same order. Clustering is performed to maximize the frequency with which SKUs in the same cluster are ordered together. In testing, the clustering assignments were compared …
Webasrs – A Web-Based Tool For Modeling And Design Of Abstract Unit-Load Picking Systems, Jeffrey S. Smith, Sabahattin Gokhan Ozden
Webasrs – A Web-Based Tool For Modeling And Design Of Abstract Unit-Load Picking Systems, Jeffrey S. Smith, Sabahattin Gokhan Ozden
11th IMHRC Proceedings (Milwaukee, Wisconsin. USA – 2010)
This paper describes a web-based tool that supports the modeling and design of abstract unit-load picking systems. The term “abstract” implies that the model is not specific to any equipment or vendors’ products, but, instead, focuses on the generic system components such as pallets, racks, slots, forklifts, cranes, etc. that comprise typical unitload picking systems. The objectives of the tool are to support the design of an AS/RSbased or a manual forklift-based picking system based on a set of design parameters and to be able to convert from an AS/RS design to a flat warehouse design and vice versa. The …
The Future Of Modeling In Material Handling Systems, Leon F. Mcginnis
The Future Of Modeling In Material Handling Systems, Leon F. Mcginnis
11th IMHRC Proceedings (Milwaukee, Wisconsin. USA – 2010)
Today, when we talk about “modeling” in the context of material handling systems, invariably we are referring to a mathematical or computational model for analyzing some aspect of the system, such as its throughput rate, response time, cost of ownership, required storage capacity, etc. Creating these kinds of models requires considerable knowledge in at least two domains the material handling system domain, and the analysis methodology domain—and considerable skill in the “art of modeling” in order to express the former in the terms of the latter. The results can be somewhat ad hoc—e.g., two different modelers are likely to create …