A Novel Approach To Analyze Inventory Allocation Decisions In Robotic Mobile Fulfillment Systems,
2016
Erasmus University
A Novel Approach To Analyze Inventory Allocation Decisions In Robotic Mobile Fulfillment Systems, Tim Lamballais, Debjit Roy, M.B.M De Koster
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
The Robotic Mobile Fulfillment System is a newly developed automated, parts-to-picker material handling system. Storage shelves, also known as inventory pods, are moved by robots between the storage area and the workstations, which means that they can be continually repositioned during operations. This paper develops a queueing model for optimizing three key decision variables: (1) the number of pods per product (2) the ratio of the number of pick to the number of replenishment stations, and (3) the replenishment level per pod. We show that too few or too many pods per product leads to unnecessarily long order throughput times, …
Simulation-Based Energy And Cycle Time Analysis Of Shuttle-Based Storage And Retrieval System,
2016
University of Maribor, Faculty of Logistics
Simulation-Based Energy And Cycle Time Analysis Of Shuttle-Based Storage And Retrieval System, Tone Lerher, Banu Yetkin Ekren, Anil Akpunar
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
This study explores the best warehouse design for shuttle-based storage and retrieval system (SBS/RS) minimizing average energy consumption per transaction and average cycle time per transaction, simultaneously. For that we provided average energy consumption per transaction versus average cycle time per transaction graphs, for different design scenarios of the studied SBS/RS warehouse. In the design concept, we considered, rack design in terms of number of bays, number of tiers, number of aisles, as well as velocity profiles of lifts in the system. We completed 144 number of experiments by simulation to see the trade-offs based on the design scenarios and …
Non-Traditional Aisle Design For A Manufacturing Facility Layout,
2016
Ohio University - Main Campus
Non-Traditional Aisle Design For A Manufacturing Facility Layout, Dale T. Masel, Dean Marinchek
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Methods for designing a facility layout typically assume that the aisles for interdepartmental travel will be parallel to the exterior walls of the facility. However, by putting aisles at an angle to the exterior walls, more direct routes between departments can be created, reducing travel distance. This paper describes a method to create a facility layout that does not have orthogonal aisles and testing of the resulting layouts shows that travel distance is reduced.
Operational-Level Optimization Of Inbound Intralogistics,
2016
University of Puerto Rico - Mayaguez
Operational-Level Optimization Of Inbound Intralogistics, Hector J. Carlo, Yeiram Martinez
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
This study is concerned with optimizing inbound operations at distribution centers (DCs), warehouses, and cross-docks with staging areas. The objective of the problem is to minimize the makespan required to move all unit loads from the trailers to the flow racks, and from the flow racks to their respective storage locations. It is assumed that a set of inbound trailers with known composition have been assigned and sequenced to inbound dock doors. The following three inbound logistics decisions are simultaneously considered: i) unloaders’ assignment and scheduling, ii) loads-to-flow rack assignment, and iii) assignment and haulers’ scheduling. In this study we …
Understanding Worker Blocking And The Design Process,
2016
Fortna Inc.
Understanding Worker Blocking And The Design Process, Russell D. Meller, Lisa M. Thomas
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Designing a distribution center (DC) is a complex process that consists of answering dozens of interrelated questions. From our perspective, the penultimate question is one of which picking methodology is optimal. To answer this question requires a full evaluation of picking methodologies in terms of their ability to meet the expected throughput requirements of the system. In manual picking systems, as throughput requirements increase, worker interaction and blocking increase as well. This implies that being able to estimate the amount of worker blocking in a system is critical to a design effort. Most of the prior research in this area …
Introducing The Concept Of Hyperconnected Mobile Production,
2016
Université du Québec à Montréal
Introducing The Concept Of Hyperconnected Mobile Production, Suzanne Marcotte, Benoit Montreuil
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Many globalized businesses are trying to cope with growing competition by strategically expanding their dedicated network of production facilities so as to be able to offer and to deliver time and price competitive offers to their clients across the world. In this paper, exploiting Physical Internet principles, we introduce the concept of hyperconnected mobile production that can alternatively enable businesses to dynamically expand and contract as necessary their production capacity in regions worldwide. First, hyperconnected mobile production exploits open fabs from multiple parties readily available in those regions. Second, these fabs are to rely on plug-and-play production modules. These modules …
A High-Density, Puzzle-Based System For Rail-Rail Container Transfers,
2016
University of Louisville
A High-Density, Puzzle-Based System For Rail-Rail Container Transfers, Kevin Gue
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
We describe a high-density, puzzle-based storage and transfer system for containers in a rail-to-rail hub for the Physical Internet. The system uses a new algorithm called GridHub, which is able to transfer items in all four cardinal directions simultaneously within a grid. We show how the GridHub system might be used in a rail-rail transfer hub to transfer containers between one side of the grid and a train.
Logistics Models To Support Order-Fulfillment From The Sea,
2016
Rensselaer Polytechnic Institute
Logistics Models To Support Order-Fulfillment From The Sea, Jennifer Pazour, Ian Shin
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Sea based logistics use maritime platforms to transfer cargo stored on vessels and delivers them ashore. This chapter describes the motivations and logistical requirements of seabasing. The sea base’s organizational structure, its material handling environment, and the internal cargo flow processes of the T-AKE vessel are described. Three seabasing distribution network scenarios -- Iron Mountain, Skin-to-Skin Replenishment, and Tailored Resupply Packages -- are described and mapped to warehousing and distribution networks, characteristics, and decision problems. Finally, related literature is reviewed and open areas for logistics research to support order fulfillment from the sea are identified.
Omnichannel Business-‐To-‐Consumer Logistics And Supply Chains: Towards Hyperconnected Networks And Facilities,
2016
Georgia Institute of Technology
Omnichannel Business-‐To-‐Consumer Logistics And Supply Chains: Towards Hyperconnected Networks And Facilities, Benoit Montreuil
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
This paper deals with omnichannel business-‐to-‐consumer logistics and supply chains. Its key contribution is the conceptualization of hyperconnected network and facility design options for enabling to meet the challenges toward achieving omnichannel logistics efficiently and sustainably while meeting the timely expectations of clients. These design options exploit key Physical Internet concepts. They encompass the transportation, pickup and delivery of ordered goods, the deployment of products across territories to enable fast response to orders, as well as on-‐demand production of products across networks of facilities while engaging multiple parties. The options range from current practice to prospective ones that are associated …
Maritime Location Decisions For Lng Bunkering Facilities,
2016
University of Groningen
Maritime Location Decisions For Lng Bunkering Facilities, Reinier C. Schneider, Iris F.A. Vis
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Liquefied natural gas (LNG) is one of the upcoming fuels to be used for more sustainable shipping activities in the maritime sector. For a widespread adoption by end-users, a refuelling network requiring capital intensive investments, needs to be in place. From a macro perspective of suppliers of LNG, it makes sense to develop the infrastructure at strategic locations that capture as many vessels and ships as possible. The goal of this research is to develop a facility location model that can contribute to the location selection of LNG facilities in a new fuelling network. The new model will fit the …
Methodology For Choosing An Appropriate Inland Vessels As A Floating Distribution Centers,
2016
University of Pardubice,
Methodology For Choosing An Appropriate Inland Vessels As A Floating Distribution Centers, Andrea Seidlova, David Sourek
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
The primary goal of this paper is to propose a methodology for the choice of an appropriate vessel type under the specific condition of floating distribution center. The right choice of the appropriate type of vessel has a fundamental influence on the long-term success of city logistic projects with water transport. In this paper, we propose a methodology for vessel choice according to its inner layout and technology of handling. The possibility of an application in practice will be defined for each option.
Integrated Versus Sequential Scheduling And Assignment At A Unit Load Cross-Dock,
2016
Erasmus University
Integrated Versus Sequential Scheduling And Assignment At A Unit Load Cross-Dock, Arpan Rijal, Marco Bijvank, Rene De Koster
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Within a cross-dock, the assignment of trucks to dock-doors and the scheduling of trucks to be processed are two major operational decisions. Conventionally, assignment and scheduling decisions are made sequentially. However, solving the two problems sequentially can lead to sub-optimal solutions because the objectives of the two problems are in conflict with each other. To gain further insights, we create an integrated model which is capable of simultaneously scheduling and assigning trucks at cross-docks. We contrast the integrated model with a sequential model which first schedules trucks for processing and then assigns them to dock-doors. Experiments demonstrate that the integrated …
A Heuristic Approach To Storage System Design With Simultaneous Assignment Of Goods,
2016
Universität München
A Heuristic Approach To Storage System Design With Simultaneous Assignment Of Goods, Tobias Staab, Willibad A. Gunthner
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
In the paper at hand, we analyze the planning of manually operated storage systems consisting of different storage areas. When solving design problems like dimensioning or equipment selection, the assignment of goods to storage areas has to be considered. Based on a general model to describe the geometry and performance calculation of a warehouse, we present a heuristic approach to assign goods to storage areas while simultaneously determining the design of the storage areas in a way that generates the lowest running costs. Our approach aims to support planners during the rough planning stage by providing a quick overview of …
Intermodal Hubs In The Physical Internet,
2016
Clemson University
Intermodal Hubs In The Physical Internet, Nadeepa Wickramage, Bill Ferrell
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Distribution of finished goods is currently an effective but inefficient process that consumes significant quantities of fossil fuel to move empty assets. This results in increased costs that are passed to the consumer and unnecessarily increased carbon emissions. The Physical Internet (PI) is focused on shared logistics that could prove to be an important element of next-generation logistics systems. The idea is to store and transport goods in anonymous standard-sized containers so that transportation and warehousing can be efficiently shared by many companies including competitors. If implemented, this idea has the potential of dramatically increasing efficiency thereby reducing fuel consumption …
Analyzing Order Throughput Times In A Milkrun Picking System,
2016
Erasmus Universiteit Rotterdam
Analyzing Order Throughput Times In A Milkrun Picking System, J. P. Van Der Gaast, M.B. M. De Koster, Ivo J.B.F. Adan
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
E-commerce fulfillment competition evolves around cheap, speedy, and time-definite delivery. Milkrun order picking systems have proven to be very successful in providing handling speed for a large, but highly variable, number of orders. In this system, an order picker picks orders that arrive in real time during the picking process; by dynamically changing the stops on the picker’s current picking route. The advantage of milkrun picking is that it reduces order picking set-up time and worker travel time compared to conventional batch picking systems. This paper is the first in studying order throughput times of multi-line orders in a milkrun …
A Lagrangian Relaxation For Capacitated Single Allocation P-Hub Median Problem With Multiple Capacity Levels,
2016
Yuan-Ze University
A Lagrangian Relaxation For Capacitated Single Allocation P-Hub Median Problem With Multiple Capacity Levels, Ching-Jung Ting, Kuo-Rui Lu
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
In this paper we consider a capacitated single allocation p-hub median problem with multiple capacity levels (CSApHMPMC) in which the decisions are to determine the location of p hubs and their capacity levels, the single allocation of non-hub nodes to hubs in the logistics network. This problem is formulated as an integer programming model with the objective of minimizing the sum of total transportation cost and fixed cost of the selected p hubs with established capacity levels. A Lagrangian relaxation (LR) approach is proposed to solve the CSApHMPMC. The Lagrangian function that we formulated decomposed the original problem into smaller …
An Empirical Assessment Of Logistics/Supply Chain Management In Two Latin American Countries,
2016
University of North Carolina at Pembroke
An Empirical Assessment Of Logistics/Supply Chain Management In Two Latin American Countries, John E. Spillan, Michael A. Mcginnis, Ali Kara, César Antúnez De Mayolo, Gustavo Jara
Journal of Transportation Management
The Bowersox Daugherty (1987) logistics strategy typology (Process Strategy, Market Strategy, and Information Strategy) is an important conceptual framework for studying logistics/supply chain management strategy and its role on logistics/supply chain management outcomes. The purpose of this research is to empirically apply the typology in Peru and compare the findings with the previous research conducted in Guatemala. The three Bowersox/Daugherty dimensions are used to define the construct Overall Logistic Strategy (OLS), and then, the OLS was used to measure Organizational Competitiveness (COMP) through two intervening variables LCE (Logistics Coordination Effectiveness) and CSC (Customer Service Commitment). The results indicate that generally …
A Proposal For Supply Chain Management Research That Matters: Sixteen High Priority Research Projects For The Future,
2016
Wilfrid Laurier University
A Proposal For Supply Chain Management Research That Matters: Sixteen High Priority Research Projects For The Future, Michael Haughton
Business Faculty Publications
On May 4th, 2016 in Milton, Ontario, the World Class Supply Chain 2016 Summit was held in partnership between CN Rail and Wilfrid Laurier University’s Lazaridis School of Business & Economics to realize an ambitious goal: raise knowledge of contemporary supply chain management (SCM) issues through genuine peer-‐to-‐peer dialogue among practitioners and scholars. A principal element of that knowledge is an answer to the question: to gain valid and reliable insights for attaining SCM excellence, what issues must be researched further? This White Paper—which is the second of the summit’s two White Papers—addresses the question by proposing a research …
Enabling Carrier Collaboration Via Order Sharing Double Auction: A Singapore Urban Logistics Perspective,
2016
Singapore Management University
Enabling Carrier Collaboration Via Order Sharing Double Auction: A Singapore Urban Logistics Perspective, Handoko Stephanus Daniel, Hoong Chuin Lau
Research Collection School Of Computing and Information Systems
A recent exploratory study on the collaborative urban logistics in Singapore suggests that cost reduction and privacy preservation are two main drivers that would motivate the participation of carriers in consolidating their last mile deliveries. With Singapore's mild restrictions on the vehicle types or the time windows for the last-mile delivery, we believe that with proper technology in place, an Urban Consolidation Center like the Tenjin Joint Distribution System in Fukuoka Japan may be implemented to achieve cost reduction with some degree of privacy preservation. Participating carriers keep their respective private orders and have the option to get their remaining …
The Impact Of Urban Sprawl On Journey To Work Times For Mass Transit And All Other Commuters In The United States: A Research Note,
2016
University of Louisville / Simmons College of Kentucky
The Impact Of Urban Sprawl On Journey To Work Times For Mass Transit And All Other Commuters In The United States: A Research Note, Thomas E. Lambert, Hokey Min, Kyle Dorriere
Journal of Transportation Management
As government budgets get tighter, there has been considerable public outcry about the continued investment in public mass transit systems and their financial viability. Amid this outcry, a number of studies have been conducted to determine which factors influence the use and efficiency of publiclyfunded mass transit systems. These factors include population density and less sprawl (or greater urban compactness). However, their impact on mass transit usage is somewhat contradictory in that the heavy concentration of populations in the urban area and greater compactness is believed to increase mass transit usage due to a bigger number of potential passengers. In …
